// ══════════════════════════════════════════════════════════════════════════════
// Chahua Video Builder - Presentation Configuration System
// Flexible Configuration Instead of Fixed Templates
// ══════════════════════════════════════════════════════════════════════════════
// Company: Chahua Development Co., Ltd.
// Version: 2.0.0
// License: MIT
// ══════════════════════════════════════════════════════════════════════════════

import { ConfigStorage } from './config-storage.js';

// ════════════════════════════════════════════════════════════════════════════
// DISPLAY MODE DETECTION (ตรวจสอบโหมดการแสดงผลปัจจุบัน)
// ════════════════════════════════════════════════════════════════════════════

let currentDisplayMode = 'intro'; // 'intro', 'editor', 'presentation'

/**
 * Set current display mode
 * @param {string} mode - 'intro' | 'editor' | 'presentation'
 */
export function setDisplayMode(mode) {
  const validModes = ['intro', 'editor', 'presentation'];
  if (!validModes.includes(mode)) {
    console.warn(`[PresentationConfig] Invalid mode: ${mode}, using 'intro'`);
    mode = 'intro';
  }
  
  currentDisplayMode = mode;
  console.log(`[PresentationConfig] Display mode set to: ${mode}`);
  
  // Trigger event for other systems to respond
  window.dispatchEvent(new CustomEvent('displayModeChanged', {
    detail: { mode }
  }));
}

/**
 * Get current display mode
 * @returns {string}
 */
export function getDisplayMode() {
  return currentDisplayMode;
}

// ════════════════════════════════════════════════════════════════════════════
// Safe Zone Configuration (แยกตามโหมดการแสดงผล 3 ชุด)
// ════════════════════════════════════════════════════════════════════════════

/**
 * INTRO MODE - Safe Zone for intro scene (hard-coded values)
 * ใช้สำหรับหน้า Intro เท่านั้น ค่าคงที่
 */
export const INTRO_SAFE_ZONE_CONFIG = {
  margins: {
    horizontalRatio: 0.08,      // 8% ของความกว้าง (กว้างกว่าโหมดอื่น)
    verticalRatio: 0.10,        // 10% ของความสูง (สูงกว่าโหมดอื่น)
    maxHorizontalRatio: 0.15,
    maxVerticalRatio: 0.18,
    minHorizontal: 60,          // ขั้นต่ำสูงกว่า
    minVertical: 60
  },
  border: {
    enabled: false,             // ไม่แสดงกรอบใน Intro
    color: 'rgba(100, 116, 139, 0.3)',
    width: 1,
    glowColor: 'rgba(100, 116, 139, 0.2)',
    glowSize: '2px',
    zIndex: 1000
  },
  enforcement: {
    enabled: false,             // ไม่บังคับใน Intro
    snapToEdge: false,
    showWarning: false
  }
};

/**
 * EDITOR MODE - Safe Zone for edit/drag mode (strict enforcement)
 * ใช้สำหรับโหมดแก้ไข/ลาก มีกรอบสีแดงบังคับ
 */
export const EDITOR_SAFE_ZONE_CONFIG = {
  margins: {
    horizontalRatio: 0.06,      // 6% ของความกว้าง
    verticalRatio: 0.08,        // 8% ของความสูง
    maxHorizontalRatio: 0.12,
    maxVerticalRatio: 0.15,
    minHorizontal: 40,
    minVertical: 40
  },
  border: {
    enabled: true,              // แสดงกรอบสีแดง
    color: 'rgba(239, 68, 68, 0.8)',
    width: 2,                   // หนากว่าโหมดอื่น
    glowColor: 'rgba(239, 68, 68, 0.5)',
    glowSize: '6px',
    zIndex: 9999                // อยู่บนสุด
  },
  enforcement: {
    enabled: true,              // บังคับไม่ให้ลากออก
    snapToEdge: true,
    showWarning: true
  }
};

/**
 * PRESENTATION MODE - Safe Zone for presentation (visual guide only)
 * ใช้สำหรับโหมดนำเสนอ แสดงกรอบบางๆ เป็นแนวทาง
 */
export const PRESENTATION_SAFE_ZONE_CONFIG = {
  margins: {
    horizontalRatio: 0.05,      // 5% ของความกว้าง (น้อยที่สุด)
    verticalRatio: 0.07,        // 7% ของความสูง
    maxHorizontalRatio: 0.10,
    maxVerticalRatio: 0.12,
    minHorizontal: 30,
    minVertical: 30
  },
  border: {
    enabled: false,             // ไม่แสดงกรอบในการนำเสนอปกติ
    color: 'rgba(100, 116, 139, 0.2)',
    width: 1,
    glowColor: 'rgba(100, 116, 139, 0.1)',
    glowSize: '2px',
    zIndex: 100
  },
  enforcement: {
    enabled: false,             // ไม่บังคับ
    snapToEdge: false,
    showWarning: false
  }
};

/**
 * Get Safe Zone Config based on current display mode
 * @returns {Object} Safe Zone configuration for current mode
 */
export function getSafeZoneConfig() {
  switch (currentDisplayMode) {
    case 'intro':
      return { ...INTRO_SAFE_ZONE_CONFIG };
    case 'editor':
      return { ...EDITOR_SAFE_ZONE_CONFIG };
    case 'presentation':
      return { ...PRESENTATION_SAFE_ZONE_CONFIG };
    default:
      console.warn(`[PresentationConfig] Unknown mode: ${currentDisplayMode}, using editor config`);
      return { ...EDITOR_SAFE_ZONE_CONFIG };
  }
}

/**
 * Legacy export for backward compatibility
 * WARNING: This will return config based on current mode
 */
export const SAFE_ZONE_CONFIG = new Proxy({}, {
  get(target, prop) {
    return getSafeZoneConfig()[prop];
  }
});

// ════════════════════════════════════════════════════════════════════════════
// Smart Layout Configuration (การจัดเรียงเนื้อหาอัตโนมัติ)
// ════════════════════════════════════════════════════════════════════════════

export const SMART_LAYOUT_CONFIG = {
  fillRatio: 0.92,              // ใช้ 92% ของพื้นที่ใช้งาน
  stageFallback: {              // ขนาดหน้าจอสำรอง
    width: 1280,
    height: 720
  },
  autoScale: true,              // ปรับขนาดเนื้อหาอัตโนมัติ
  maintainAspectRatio: true,    // รักษาสัดส่วน
  centerContent: true           // จัดกึ่งกลาง
};

/**
 * Get Smart Layout fill ratio
 */
export function getSmartLayoutFillRatio() {
  return SMART_LAYOUT_CONFIG.fillRatio;
}

/**
 * Get Smart Layout stage fallback dimensions
 */
export function getSmartLayoutStageFallback() {
  return { ...SMART_LAYOUT_CONFIG.stageFallback };
}

/**
 * Update Smart Layout configuration
 */
export function updateSmartLayoutConfig(newConfig) {
  Object.assign(SMART_LAYOUT_CONFIG, newConfig);
  
  window.dispatchEvent(new CustomEvent('smartLayoutConfigUpdated', {
    detail: SMART_LAYOUT_CONFIG
  }));
  
  return SMART_LAYOUT_CONFIG;
}

/**
 * Get current Smart Layout configuration
 */
export function getSmartLayoutConfig() {
  return { ...SMART_LAYOUT_CONFIG };
}

/**
 * Get Safe Zone margins (คำนวณ margins ตามขนาดหน้าจอและโหมดปัจจุบัน)
 * @param {Object} stageRect - ขนาดและตำแหน่งของ stage
 * @returns {Object} - { left, right, top, bottom }
 */
export function computeSafeZoneMargins(stageRect = {}) {
  const width = stageRect.width || window.innerWidth;
  const height = stageRect.height || window.innerHeight;
  
  // ใช้ config ตามโหมดปัจจุบัน
  const safeZoneConfig = getSafeZoneConfig();
  const config = safeZoneConfig.margins;
  
  // คำนวณตามสัดส่วน
  const horizontalBase = width * config.horizontalRatio;
  const verticalBase = height * config.verticalRatio;
  
  // จำกัดค่าให้อยู่ในช่วงที่กำหนด
  const left = Math.max(
    config.minHorizontal,
    Math.min(horizontalBase, width * config.maxHorizontalRatio)
  );
  const right = left;
  const top = Math.max(
    config.minVertical,
    Math.min(verticalBase, height * config.maxVerticalRatio)
  );
  const bottom = top;
  
  console.log(`[PresentationConfig] Safe Zone margins for ${currentDisplayMode} mode:`, {
    width, height, left, right, top, bottom
  });
  
  return { left, right, top, bottom };
}

/**
 * Update Safe Zone configuration
 * @param {Object} newConfig - ค่าการตั้งค่าใหม่
 */
export function updateSafeZoneConfig(newConfig) {
  if (newConfig.margins) {
    Object.assign(SAFE_ZONE_CONFIG.margins, newConfig.margins);
  }
  if (newConfig.border) {
    Object.assign(SAFE_ZONE_CONFIG.border, newConfig.border);
  }
  if (newConfig.enforcement) {
    Object.assign(SAFE_ZONE_CONFIG.enforcement, newConfig.enforcement);
  }
  
  // Dispatch event เพื่อแจ้ง components อื่นๆ
  window.dispatchEvent(new CustomEvent('safeZoneConfigUpdated', {
    detail: SAFE_ZONE_CONFIG
  }));
  
  return SAFE_ZONE_CONFIG;
}

/**
 * Reset Safe Zone configuration to defaults for all modes
 */
export function resetSafeZoneConfig() {
  // Reset Intro Mode
  INTRO_SAFE_ZONE_CONFIG.margins = {
    horizontalRatio: 0.08,
    verticalRatio: 0.10,
    maxHorizontalRatio: 0.15,
    maxVerticalRatio: 0.18,
    minHorizontal: 60,
    minVertical: 60
  };
  INTRO_SAFE_ZONE_CONFIG.border = {
    enabled: false,
    color: 'rgba(100, 116, 139, 0.3)',
    width: 1,
    glowColor: 'rgba(100, 116, 139, 0.2)',
    glowSize: '2px',
    zIndex: 1000
  };
  INTRO_SAFE_ZONE_CONFIG.enforcement = {
    enabled: false,
    snapToEdge: false,
    showWarning: false
  };

  // Reset Editor Mode
  EDITOR_SAFE_ZONE_CONFIG.margins = {
    horizontalRatio: 0.06,
    verticalRatio: 0.08,
    maxHorizontalRatio: 0.12,
    maxVerticalRatio: 0.15,
    minHorizontal: 40,
    minVertical: 40
  };
  EDITOR_SAFE_ZONE_CONFIG.border = {
    enabled: true,
    color: 'rgba(239, 68, 68, 0.8)',
    width: 2,
    glowColor: 'rgba(239, 68, 68, 0.5)',
    glowSize: '6px',
    zIndex: 9999
  };
  EDITOR_SAFE_ZONE_CONFIG.enforcement = {
    enabled: true,
    snapToEdge: true,
    showWarning: true
  };

  // Reset Presentation Mode
  PRESENTATION_SAFE_ZONE_CONFIG.margins = {
    horizontalRatio: 0.05,
    verticalRatio: 0.07,
    maxHorizontalRatio: 0.10,
    maxVerticalRatio: 0.12,
    minHorizontal: 30,
    minVertical: 30
  };
  PRESENTATION_SAFE_ZONE_CONFIG.border = {
    enabled: false,
    color: 'rgba(100, 116, 139, 0.2)',
    width: 1,
    glowColor: 'rgba(100, 116, 139, 0.1)',
    glowSize: '2px',
    zIndex: 100
  };
  PRESENTATION_SAFE_ZONE_CONFIG.enforcement = {
    enabled: false,
    snapToEdge: false,
    showWarning: false
  };
  
  window.dispatchEvent(new CustomEvent('safeZoneConfigUpdated', {
    detail: getSafeZoneConfig()
  }));
  
  return getSafeZoneConfig();
}

// ════════════════════════════════════════════════════════════════════════════
// Configuration Presets (Default Configuration Examples)
// ════════════════════════════════════════════════════════════════════════════

export const CONFIG_PRESETS = {
  default: {
    name: 'Default',
    description: 'Standard default settings',
    config: {
      fonts: {
        heading: "'Inter', 'Segoe UI', sans-serif",
        body: "'Inter', 'Segoe UI', sans-serif",
        code: "'Source Code Pro', 'Consolas', monospace"
      },
      fontSizes: {
        h1: { min: 1.75, base: 4.5, max: 3 },      // clamp(1.75rem, 4.5vw, 3rem)
        h2: { min: 1.5, base: 3.5, max: 2.5 },
        h3: { min: 1.25, base: 2.8, max: 1.9 },
        text: { min: 1.1, base: 1.8, max: 1.6 },
        code: { min: 0.95, base: 1.5, max: 1.3 }
      },
      colors: {
        primary: '#60a5fa',
        secondary: '#a855f7',
        background: '#0a1628',
        surface: '#132337',
        text: '#e2e8f0',
        textSecondary: '#94a3b8',
        accent: '#06b6d4',
        codeBackground: '#1e293b',
        codeBorder: '#334155'
      },
      background: {
        type: 'solid',           // 'solid', 'gradient', 'image'
        value: '#0a1628',
        gradient: null,
        image: null,
        opacity: 1
      },
      animations: {
        enabled: true,
        duration: 0.6,
        easing: 'cubic-bezier(0.4, 0, 0.2, 1)',
        slideTransition: 'fade',  // 'fade', 'slide', 'none'
      },
      styles: {
        borderRadius: '1.25rem',
        shadow: '0 20px 40px rgba(0, 0, 0, 0.3)',
        lineHeight: {
          heading: 1.3,
          body: 1.7
        },
        // UI Elements
        previewOpacity: 0.68,
        overlayBackground: 'rgba(10, 22, 40, 0.85)',
        overlayBlur: '8px',
        navBorderWidth: '2px',
        navBorderOpacity: 0.5,
        // Borders & Accents
        headingAccentBorderWidth: '4px',
        blockquoteBorderWidth: '4px',
        imageBorderWidth: '2px',
        linkUnderlineWidth: '2px',
        tableBorderWidth: '1px',
        hrBorderWidth: '2px',
        // Effects
        backdropGradientColor: 'rgba(59, 130, 246, 0.15)',
        backdropGradientSpread: '70%',
        backdropBlur: '60px',
        // Page Indicator
        pageIndicatorTop: '16px',
        pageIndicatorRight: '16px',
        pageIndicatorFontSize: '0.875rem',  // text-sm
        pageIndicatorOpacity: 0.7,
        pageIndicatorPaddingX: '12px',      // px-3
        pageIndicatorPaddingY: '4px',       // py-1
        pageIndicatorBgColor: 'rgba(22, 78, 99, 0.5)',  // bg-cyan-900/50
        pageIndicatorTextColor: '#a5f3fc'   // text-cyan-200
      },
      typography: {
        paragraphSpacing: {
          before: 0.5,    // rem
          after: 1        // rem
        },
        headingSpacing: {
          before: 1.5,    // rem
          after: 0.75     // rem
        },
        indentation: {
          firstLine: 0,   // rem
          hanging: 0,     // rem
          blockQuote: 1.5 // rem
        },
        listIndent: 1.5,  // rem
        textAlign: 'left' // 'left', 'center', 'right', 'justify'
      },
      layout: {
        contentPadding: {
          small: 40,      // px - for small screens
          large: 48,      // px - for large screens
          ultra: 64       // px - for ultra-wide screens
        },
        contentAlignment: {
          horizontal: 'center',  // 'flex-start', 'center', 'flex-end'
          vertical: 'center'     // 'flex-start', 'center', 'flex-end'
        }
      },
      smartList: {
        twoColumnThreshold: 6,   // items threshold for 2-column layout
        threeColumnThreshold: 12 // items threshold for 3-column layout
      }
    }
  },

  professional: {
    name: 'Professional',
    description: 'For business presentations',
    config: {
      fonts: {
        heading: "'Montserrat', 'Arial', sans-serif",
        body: "'Lato', 'Helvetica', sans-serif",
        code: "'Fira Code', monospace"
      },
      fontSizes: {
        h1: { min: 2, base: 5, max: 3.5 },
        h2: { min: 1.6, base: 4, max: 2.8 },
        h3: { min: 1.3, base: 3, max: 2.1 },
        text: { min: 1.2, base: 2, max: 1.8 },
        code: { min: 1, base: 1.6, max: 1.4 }
      },
      colors: {
        primary: '#3b82f6',
        secondary: '#8b5cf6',
        background: '#0f172a',
        surface: '#1e293b',
        text: '#f1f5f9',
        textSecondary: '#cbd5e1',
        accent: '#0ea5e9',
        codeBackground: '#1e293b',
        codeBorder: '#475569'
      },
      background: {
        type: 'gradient',
        value: null,
        gradient: 'linear-gradient(135deg, #0f172a 0%, #1e293b 100%)',
        image: null,
        opacity: 1
      },
      animations: {
        enabled: true,
        duration: 0.7,
        easing: 'cubic-bezier(0.25, 0.1, 0.25, 1)',
        slideTransition: 'slide'
      },
      styles: {
        borderRadius: '0.75rem',
        shadow: '0 25px 50px rgba(0, 0, 0, 0.5)',
        lineHeight: {
          heading: 1.4,
          body: 1.8
        },
        // UI Elements
        previewOpacity: 0.68,
        overlayBackground: 'rgba(15, 23, 42, 0.9)',
        overlayBlur: '10px',
        navBorderWidth: '2px',
        navBorderOpacity: 0.6,
        // Borders & Accents
        headingAccentBorderWidth: '4px',
        blockquoteBorderWidth: '4px',
        imageBorderWidth: '2px',
        linkUnderlineWidth: '2px',
        tableBorderWidth: '1px',
        hrBorderWidth: '2px',
        // Effects
        backdropGradientColor: 'rgba(59, 130, 246, 0.2)',
        backdropGradientSpread: '65%',
        backdropBlur: '80px',
        // Page Indicator
        pageIndicatorTop: '16px',
        pageIndicatorRight: '16px',
        pageIndicatorFontSize: '0.875rem',
        pageIndicatorOpacity: 0.7,
        pageIndicatorPaddingX: '12px',
        pageIndicatorPaddingY: '4px',
        pageIndicatorBgColor: 'rgba(30, 41, 59, 0.6)',
        pageIndicatorTextColor: '#cbd5e1'
      },
      typography: {
        paragraphSpacing: {
          before: 0.75,
          after: 1.25
        },
        headingSpacing: {
          before: 2,
          after: 1
        },
        indentation: {
          firstLine: 0,
          hanging: 0,
          blockQuote: 2
        },
        listIndent: 2,
        textAlign: 'left'
      },
      layout: {
        contentPadding: {
          small: 48,
          large: 56,
          ultra: 72
        },
        contentAlignment: {
          horizontal: 'flex-start',
          vertical: 'flex-start'
        }
      },
      smartList: {
        twoColumnThreshold: 6,
        threeColumnThreshold: 12
      }
    }
  },

  minimal: {
    name: 'Minimal',
    description: 'Simple and clear design',
    config: {
      fonts: {
        heading: "'Helvetica Neue', 'Arial', sans-serif",
        body: "'Helvetica Neue', 'Arial', sans-serif",
        code: "'SF Mono', 'Monaco', monospace"
      },
      fontSizes: {
        h1: { min: 1.5, base: 4, max: 2.5 },
        h2: { min: 1.3, base: 3, max: 2 },
        h3: { min: 1.15, base: 2.5, max: 1.7 },
        text: { min: 1, base: 1.6, max: 1.4 },
        code: { min: 0.9, base: 1.4, max: 1.2 }
      },
      colors: {
        primary: '#000000',
        secondary: '#333333',
        background: '#ffffff',
        surface: '#f8f9fa',
        text: '#000000',
        textSecondary: '#666666',
        accent: '#0066cc',
        codeBackground: '#f5f5f5',
        codeBorder: '#e0e0e0'
      },
      background: {
        type: 'solid',
        value: '#ffffff',
        gradient: null,
        image: null,
        opacity: 1
      },
      animations: {
        enabled: true,
        duration: 0.3,
        easing: 'ease-out',
        slideTransition: 'fade'
      },
      styles: {
        borderRadius: '0',
        shadow: 'none',
        lineHeight: {
          heading: 1.2,
          body: 1.6
        },
        // UI Elements
        previewOpacity: 0.68,
        overlayBackground: 'rgba(255, 255, 255, 0.85)',
        overlayBlur: '6px',
        navBorderWidth: '1px',
        navBorderOpacity: 0.3,
        // Borders & Accents
        headingAccentBorderWidth: '2px',
        blockquoteBorderWidth: '3px',
        imageBorderWidth: '1px',
        linkUnderlineWidth: '1px',
        tableBorderWidth: '1px',
        hrBorderWidth: '1px',
        // Effects
        backdropGradientColor: 'rgba(0, 102, 204, 0.05)',
        backdropGradientSpread: '50%',
        backdropBlur: '20px',
        // Page Indicator
        pageIndicatorTop: '12px',
        pageIndicatorRight: '12px',
        pageIndicatorFontSize: '0.75rem',
        pageIndicatorOpacity: 0.6,
        pageIndicatorPaddingX: '8px',
        pageIndicatorPaddingY: '4px',
        pageIndicatorBgColor: 'rgba(0, 0, 0, 0.1)',
        pageIndicatorTextColor: '#666666'
      },
      typography: {
        paragraphSpacing: {
          before: 0.25,
          after: 0.75
        },
        headingSpacing: {
          before: 1.25,
          after: 0.5
        },
        indentation: {
          firstLine: 0,
          hanging: 0,
          blockQuote: 1
        },
        listIndent: 1.25,
        textAlign: 'left'
      },
      layout: {
        contentPadding: {
          small: 32,
          large: 40,
          ultra: 52
        },
        contentAlignment: {
          horizontal: 'center',
          vertical: 'center'
        }
      },
      smartList: {
        twoColumnThreshold: 6,
        threeColumnThreshold: 12
      }
    }
  },

  creative: {
    name: 'Creative',
    description: 'Creative and distinctive style',
    config: {
      fonts: {
        heading: "'Poppins', 'Verdana', sans-serif",
        body: "'Inter', sans-serif",
        code: "'JetBrains Mono', monospace"
      },
      fontSizes: {
        h1: { min: 2.2, base: 5.5, max: 4 },
        h2: { min: 1.8, base: 4.5, max: 3 },
        h3: { min: 1.4, base: 3.5, max: 2.3 },
        text: { min: 1.15, base: 2, max: 1.7 },
        code: { min: 1, base: 1.7, max: 1.5 }
      },
      colors: {
        primary: '#ec4899',
        secondary: '#8b5cf6',
        background: '#1a0b2e',
        surface: '#2d1b4e',
        text: '#f0e7ff',
        textSecondary: '#c4b5fd',
        accent: '#f59e0b',
        codeBackground: '#2d1b4e',
        codeBorder: '#4c3575'
      },
      background: {
        type: 'gradient',
        value: null,
        gradient: 'linear-gradient(135deg, #1a0b2e 0%, #2d1b4e 50%, #4c1d95 100%)',
        image: null,
        opacity: 1
      },
      animations: {
        enabled: true,
        duration: 0.8,
        easing: 'cubic-bezier(0.68, -0.55, 0.265, 1.55)',
        slideTransition: 'slide'
      },
      styles: {
        borderRadius: '2rem',
        shadow: '0 30px 60px rgba(139, 92, 246, 0.4)',
        lineHeight: {
          heading: 1.35,
          body: 1.75
        },
        // UI Elements
        previewOpacity: 0.68,
        overlayBackground: 'rgba(26, 11, 46, 0.9)',
        overlayBlur: '12px',
        navBorderWidth: '3px',
        navBorderOpacity: 0.7,
        // Borders & Accents
        headingAccentBorderWidth: '6px',
        blockquoteBorderWidth: '5px',
        imageBorderWidth: '3px',
        linkUnderlineWidth: '3px',
        tableBorderWidth: '2px',
        hrBorderWidth: '4px',
        // Effects
        backdropGradientColor: 'rgba(236, 72, 153, 0.25)',
        backdropGradientSpread: '75%',
        backdropBlur: '100px',
        // Page Indicator
        pageIndicatorTop: '20px',
        pageIndicatorRight: '20px',
        pageIndicatorFontSize: '1rem',
        pageIndicatorOpacity: 0.8,
        pageIndicatorPaddingX: '16px',
        pageIndicatorPaddingY: '6px',
        pageIndicatorBgColor: 'rgba(139, 92, 246, 0.4)',
        pageIndicatorTextColor: '#f0e7ff'
      },
      typography: {
        paragraphSpacing: {
          before: 0.5,
          after: 1.5
        },
        headingSpacing: {
          before: 2,
          after: 1.25
        },
        indentation: {
          firstLine: 0,
          hanging: 0,
          blockQuote: 2
        },
        listIndent: 2,
        textAlign: 'left'
      },
      layout: {
        contentPadding: {
          small: 40,
          large: 52,
          ultra: 68
        },
        contentAlignment: {
          horizontal: 'center',
          vertical: 'center'
        }
      },
      smartList: {
        twoColumnThreshold: 6,
        threeColumnThreshold: 12
      }
    }
  }
};

// ════════════════════════════════════════════════════════════════════════════
// Configuration Options (ตัวเลือกที่ใช้ได้)
// ════════════════════════════════════════════════════════════════════════════

export const FONT_OPTIONS = {
  heading: [
    { value: "'Inter', 'Segoe UI', sans-serif", label: 'Inter (Modern)' },
    { value: "'Montserrat', 'Arial', sans-serif", label: 'Montserrat (Professional)' },
    { value: "'Poppins', 'Verdana', sans-serif", label: 'Poppins (Friendly)' },
    { value: "'Playfair Display', 'Georgia', serif", label: 'Playfair Display (Elegant)' },
    { value: "'Space Grotesk', sans-serif", label: 'Space Grotesk (Tech)' },
    { value: "'Helvetica Neue', 'Arial', sans-serif", label: 'Helvetica (Clean)' },
    { value: "'Ubuntu', sans-serif", label: 'Ubuntu (Casual)' },
    { value: "'Orbitron', sans-serif", label: 'Orbitron (Futuristic)' }
  ],
  body: [
    { value: "'Inter', 'Segoe UI', sans-serif", label: 'Inter' },
    { value: "'Lato', 'Helvetica', sans-serif", label: 'Lato' },
    { value: "'Roboto', sans-serif", label: 'Roboto' },
    { value: "'Open Sans', sans-serif", label: 'Open Sans' },
    { value: "'Helvetica Neue', 'Arial', sans-serif", label: 'Helvetica' },
    { value: "'Ubuntu', sans-serif", label: 'Ubuntu' }
  ],
  code: [
    { value: "'Source Code Pro', 'Consolas', monospace", label: 'Source Code Pro' },
    { value: "'Fira Code', monospace", label: 'Fira Code' },
    { value: "'JetBrains Mono', monospace", label: 'JetBrains Mono' },
    { value: "'Roboto Mono', monospace", label: 'Roboto Mono' },
    { value: "'SF Mono', 'Monaco', monospace", label: 'SF Mono' },
    { value: "'Courier Prime', 'Courier New', monospace", label: 'Courier' }
  ]
};

export const BACKGROUND_TYPES = [
  { value: 'solid', label: 'สีพื้น' },
  { value: 'gradient', label: 'ไล่สี' },
  { value: 'image', label: 'รูปภาพ' }
];

export const TRANSITION_TYPES = [
  { value: 'fade', label: 'Fade (จางเข้า-จางออก)' },
  { value: 'slide', label: 'Slide (เลื่อน)' },
  { value: 'none', label: 'ไม่มีเอฟเฟค' }
];

export const TEXT_ALIGN_OPTIONS = [
  { value: 'left', label: 'ชิดซ้าย' },
  { value: 'center', label: 'กึ่งกลาง' },
  { value: 'right', label: 'ชิดขวา' },
  { value: 'justify', label: 'เต็มแนว' }
];

// ════════════════════════════════════════════════════════════════════════════
// Configuration Management
// ════════════════════════════════════════════════════════════════════════════

let currentConfig = { ...CONFIG_PRESETS.default.config };

/**
 * ดึงค่า configuration ปัจจุบัน
 */
export function getCurrentConfig() {
  return { ...currentConfig };
}

/**
 * ตั้งค่า configuration ใหม่
 */
export function setConfig(newConfig, autoSave = true) {
  currentConfig = { ...currentConfig, ...newConfig };
  applyConfigToDOM();
  
  // Auto-save to localStorage
  if (autoSave) {
    ConfigStorage.autoSave(currentConfig);
  }
  
  return currentConfig;
}

/**
 * อัปเดตค่าเฉพาะส่วน (รองรับ nested objects)
 */
export function updateConfigPart(part, values, autoSave = true) {
  if (!currentConfig[part]) {
    currentConfig[part] = values;
  } else if (typeof values === 'object' && !Array.isArray(values)) {
    // Deep merge for nested objects
    currentConfig[part] = deepMerge(currentConfig[part], values);
  } else {
    currentConfig[part] = values;
  }
  applyConfigToDOM();
  
  // Auto-save to localStorage
  if (autoSave) {
    ConfigStorage.autoSave(currentConfig);
  }
  
  return currentConfig;
}

/**
 * Deep merge helper function
 */
function deepMerge(target, source) {
  const result = { ...target };
  
  for (const key in source) {
    if (source.hasOwnProperty(key)) {
      if (source[key] && typeof source[key] === 'object' && !Array.isArray(source[key])) {
        result[key] = deepMerge(result[key] || {}, source[key]);
      } else {
        result[key] = source[key];
      }
    }
  }
  
  return result;
}

/**
 * โหลด preset
 */
export function loadPreset(presetName, autoSave = true) {
  const preset = CONFIG_PRESETS[presetName];
  if (!preset) {
    console.error(`Preset "${presetName}" not found`);
    return null;
  }
  currentConfig = { ...preset.config };
  applyConfigToDOM();
  
  // Auto-save to localStorage
  if (autoSave) {
    ConfigStorage.autoSave(currentConfig);
  }
  
  return currentConfig;
}

/**
 * รีเซ็ตเป็นค่าเริ่มต้น
 */
export function resetConfig(autoSave = true) {
  currentConfig = { ...CONFIG_PRESETS.default.config };
  applyConfigToDOM();
  
  // Clear saved config และ save default
  if (autoSave) {
    ConfigStorage.clearLocalStorage();
    ConfigStorage.saveToLocalStorage(currentConfig);
  }
  
  return currentConfig;
}

/**
 * โหลดการตั้งค่าที่บันทึกไว้จาก localStorage
 */
export function loadSavedConfig() {
  const savedConfig = ConfigStorage.loadFromLocalStorage();
  if (savedConfig) {
    currentConfig = { ...CONFIG_PRESETS.default.config, ...savedConfig };
    applyConfigToDOM();
    console.log('[PresentationConfig] ✅ Loaded saved config from localStorage');
    return currentConfig;
  }
  console.log('[PresentationConfig] No saved config found, using default');
  return null;
}

/**
 * Export การตั้งค่าปัจจุบันเป็นไฟล์
 */
export async function exportConfigToFile() {
  return ConfigStorage.exportToFile(currentConfig);
}

/**
 * Import การตั้งค่าจากไฟล์
 */
export async function importConfigFromFile() {
  try {
    const importedConfig = await ConfigStorage.importFromFile();
    if (importedConfig) {
      currentConfig = { ...CONFIG_PRESETS.default.config, ...importedConfig };
      applyConfigToDOM();
      ConfigStorage.saveToLocalStorage(currentConfig);
      console.log('[PresentationConfig] ✅ Imported config from file');
      return currentConfig;
    }
  } catch (error) {
    console.error('[PresentationConfig] Failed to import config:', error);
  }
  return null;
}

/**
 * ดึงรายชื่อ presets ทั้งหมด
 */
export function getAllPresets() {
  return Object.entries(CONFIG_PRESETS).map(([key, preset]) => ({
    id: key,
    name: preset.name,
    description: preset.description
  }));
}

/**
 * แปลง font size config เป็น clamp CSS
 */
function generateClampCSS(sizeConfig) {
  return `clamp(${sizeConfig.min}rem, ${sizeConfig.base}vw, ${sizeConfig.max}rem)`;
}

/**
 * ใส่ค่า configuration ลงใน DOM
 */
export function applyConfigToDOM() {
  const root = document.documentElement;
  
  console.log('[PresentationConfig] Applying configuration to DOM...', currentConfig);

  // Fonts
  root.style.setProperty('--font-heading', currentConfig.fonts.heading);
  root.style.setProperty('--font-body', currentConfig.fonts.body);
  root.style.setProperty('--font-code', currentConfig.fonts.code);
  root.style.setProperty('--font-primary', currentConfig.fonts.body); // Backward compatibility

  // Font Sizes
  const h1Size = generateClampCSS(currentConfig.fontSizes.h1);
  const h2Size = generateClampCSS(currentConfig.fontSizes.h2);
  const h3Size = generateClampCSS(currentConfig.fontSizes.h3);
  const textSize = generateClampCSS(currentConfig.fontSizes.text);
  const codeSize = generateClampCSS(currentConfig.fontSizes.code);
  
  root.style.setProperty('--font-size-h1', h1Size);
  root.style.setProperty('--font-size-h2', h2Size);
  root.style.setProperty('--font-size-h3', h3Size);
  root.style.setProperty('--font-size-text', textSize);
  root.style.setProperty('--font-size-code', codeSize);
  
  console.log('[PresentationConfig] Font sizes applied:', {
    h1: h1Size,
    h2: h2Size,
    h3: h3Size,
    text: textSize,
    code: codeSize
  });

  // Colors
  root.style.setProperty('--color-primary', currentConfig.colors.primary);
  root.style.setProperty('--color-secondary', currentConfig.colors.secondary);
  root.style.setProperty('--color-background', currentConfig.colors.background);
  root.style.setProperty('--color-surface', currentConfig.colors.surface);
  root.style.setProperty('--color-text', currentConfig.colors.text);
  root.style.setProperty('--color-text-secondary', currentConfig.colors.textSecondary);
  root.style.setProperty('--color-accent', currentConfig.colors.accent);
  root.style.setProperty('--color-code-bg', currentConfig.colors.codeBackground);
  root.style.setProperty('--color-code-border', currentConfig.colors.codeBorder);
  
  console.log('[PresentationConfig] Colors applied:', currentConfig.colors);

  // Background
  if (currentConfig.background.type === 'solid') {
    document.body.style.background = currentConfig.background.value;
  } else if (currentConfig.background.type === 'gradient') {
    document.body.style.background = currentConfig.background.gradient;
  } else if (currentConfig.background.type === 'image' && currentConfig.background.image) {
    document.body.style.background = `url(${currentConfig.background.image})`;
    document.body.style.backgroundSize = 'cover';
    document.body.style.backgroundPosition = 'center';
  }

  // Animations
  root.style.setProperty('--anim-duration', `${currentConfig.animations.duration}s`);
  root.style.setProperty('--anim-easing', currentConfig.animations.easing);

  // Styles
  root.style.setProperty('--border-radius', currentConfig.styles.borderRadius);
  root.style.setProperty('--shadow', currentConfig.styles.shadow);
  root.style.setProperty('--line-height-heading', currentConfig.styles.lineHeight.heading);
  root.style.setProperty('--line-height-body', currentConfig.styles.lineHeight.body);
  
  console.log('[PresentationConfig] Line heights applied:', currentConfig.styles.lineHeight);
  
  // UI Elements Styles
  root.style.setProperty('--preview-opacity', currentConfig.styles.previewOpacity);
  root.style.setProperty('--overlay-background', currentConfig.styles.overlayBackground);
  root.style.setProperty('--overlay-blur', currentConfig.styles.overlayBlur);
  root.style.setProperty('--nav-border-width', currentConfig.styles.navBorderWidth);
  root.style.setProperty('--nav-border-opacity', currentConfig.styles.navBorderOpacity);
  
  // Borders & Accents
  root.style.setProperty('--heading-accent-border-width', currentConfig.styles.headingAccentBorderWidth);
  root.style.setProperty('--blockquote-border-width', currentConfig.styles.blockquoteBorderWidth);
  root.style.setProperty('--image-border-width', currentConfig.styles.imageBorderWidth);
  root.style.setProperty('--link-underline-width', currentConfig.styles.linkUnderlineWidth);
  root.style.setProperty('--table-border-width', currentConfig.styles.tableBorderWidth);
  root.style.setProperty('--hr-border-width', currentConfig.styles.hrBorderWidth);
  
  // Effects
  root.style.setProperty('--backdrop-gradient-color', currentConfig.styles.backdropGradientColor);
  root.style.setProperty('--backdrop-gradient-spread', currentConfig.styles.backdropGradientSpread);
  root.style.setProperty('--backdrop-blur', currentConfig.styles.backdropBlur);
  
  // Page Indicator
  root.style.setProperty('--page-indicator-top', currentConfig.styles.pageIndicatorTop);
  root.style.setProperty('--page-indicator-right', currentConfig.styles.pageIndicatorRight);
  root.style.setProperty('--page-indicator-font-size', currentConfig.styles.pageIndicatorFontSize);
  root.style.setProperty('--page-indicator-opacity', currentConfig.styles.pageIndicatorOpacity);
  root.style.setProperty('--page-indicator-padding-x', currentConfig.styles.pageIndicatorPaddingX);
  root.style.setProperty('--page-indicator-padding-y', currentConfig.styles.pageIndicatorPaddingY);
  root.style.setProperty('--page-indicator-bg-color', currentConfig.styles.pageIndicatorBgColor);
  root.style.setProperty('--page-indicator-text-color', currentConfig.styles.pageIndicatorTextColor);

  // Typography (NEW)
  if (currentConfig.typography) {
    console.log('[PresentationConfig] Applying typography:', currentConfig.typography);
    
    root.style.setProperty('--paragraph-spacing-before', `${currentConfig.typography.paragraphSpacing.before}rem`);
    root.style.setProperty('--paragraph-spacing-after', `${currentConfig.typography.paragraphSpacing.after}rem`);
    root.style.setProperty('--heading-spacing-before', `${currentConfig.typography.headingSpacing.before}rem`);
    root.style.setProperty('--heading-spacing-after', `${currentConfig.typography.headingSpacing.after}rem`);
    root.style.setProperty('--indent-first-line', `${currentConfig.typography.indentation.firstLine}rem`);
    root.style.setProperty('--indent-hanging', `${currentConfig.typography.indentation.hanging || 0}rem`);
    root.style.setProperty('--indent-blockquote', `${currentConfig.typography.indentation.blockQuote}rem`);
    root.style.setProperty('--list-indent', `${currentConfig.typography.listIndent}rem`);
    root.style.setProperty('--text-align', currentConfig.typography.textAlign);
  }
  
  // Layout & Content Positioning (NEW)
  if (currentConfig.layout) {
    console.log('[PresentationConfig] Applying layout:', currentConfig.layout);
    
    root.style.setProperty('--content-padding-small', `${currentConfig.layout.contentPadding.small}px`);
    root.style.setProperty('--content-padding-large', `${currentConfig.layout.contentPadding.large}px`);
    root.style.setProperty('--content-padding-ultra', `${currentConfig.layout.contentPadding.ultra}px`);
    root.style.setProperty('--content-align-horizontal', currentConfig.layout.contentAlignment.horizontal);
    root.style.setProperty('--content-align-vertical', currentConfig.layout.contentAlignment.vertical);
  }
  
  // Smart List Columns
  if (currentConfig.smartList) {
    root.style.setProperty('--smart-list-two-column-threshold', currentConfig.smartList.twoColumnThreshold);
    root.style.setProperty('--smart-list-three-column-threshold', currentConfig.smartList.threeColumnThreshold);
  }
  
  console.log('[PresentationConfig] ✅ Configuration applied successfully');

  return currentConfig;
}

/**
 * Export configuration เป็น JSON
 */
export function exportConfig() {
  return JSON.stringify(currentConfig, null, 2);
}

/**
 * Import configuration จาก JSON
 */
export function importConfig(jsonString) {
  try {
    const imported = JSON.parse(jsonString);
    currentConfig = { ...CONFIG_PRESETS.default.config, ...imported };
    applyConfigToDOM();
    return currentConfig;
  } catch (error) {
    console.error('Failed to import configuration:', error);
    return null;
  }
}

/**
 * Update typography settings from UI values
 * @param {Object} values - Typography values from UI
 */
export function updateTypography(values) {
  if (!currentConfig.typography) {
    // Use default preset values instead of hardcoding
    currentConfig.typography = { ...CONFIG_PRESETS.default.config.typography };
  }
  
  // Deep merge typography values
  currentConfig.typography = deepMerge(currentConfig.typography, values);
  applyConfigToDOM();
  return currentConfig;
}

/**
 * Get current typography settings
 */
export function getTypography() {
  return currentConfig.typography || null;
}

// ════════════════════════════════════════════════════════════════════════════
// UI Integration
// ════════════════════════════════════════════════════════════════════════════

let uiCallbacks = {
  onUpdate: null,
  onSave: null,
  setStatus: null
};

/**
 * Initialize Presentation UI with DOM elements and callbacks
 * @param {Object} domElements - Object containing all DOM element references
 * @param {Object} callbacks - Callback functions { onUpdate, onSave, setStatus }
 */
export function initPresentationUI(domElements, callbacks = {}) {
  uiCallbacks = { ...uiCallbacks, ...callbacks };
  
  // Populate font options
  if (domElements.fontHeading && FONT_OPTIONS.heading) {
    domElements.fontHeading.innerHTML = '';
    FONT_OPTIONS.heading.forEach(opt => {
      const option = document.createElement('option');
      option.value = opt.value;
      option.textContent = opt.label;
      domElements.fontHeading.appendChild(option);
    });
  }

  if (domElements.fontBody && FONT_OPTIONS.body) {
    domElements.fontBody.innerHTML = '';
    FONT_OPTIONS.body.forEach(opt => {
      const option = document.createElement('option');
      option.value = opt.value;
      option.textContent = opt.label;
      domElements.fontBody.appendChild(option);
    });
  }

  if (domElements.fontCode && FONT_OPTIONS.code) {
    domElements.fontCode.innerHTML = '';
    FONT_OPTIONS.code.forEach(opt => {
      const option = document.createElement('option');
      option.value = opt.value;
      option.textContent = opt.label;
      domElements.fontCode.appendChild(option);
    });
  }

  // Load current config into UI
  loadConfigToUI(domElements);

  // Setup event listeners
  setupPresetListener(domElements);
  setupFontListeners(domElements);
  setupColorListeners(domElements);
  setupAnimationListeners(domElements);
  setupFontSizeListeners(domElements);
  setupUIStylesListeners(domElements);
  setupTypographyListeners(domElements);
  setupLayoutListeners(domElements);
  setupActionButtons(domElements);
}

/**
 * Load current configuration to UI inputs
 */
function loadConfigToUI(domElements) {
  // Load fonts
  if (domElements.fontHeading) domElements.fontHeading.value = currentConfig.fonts.heading;
  if (domElements.fontBody) domElements.fontBody.value = currentConfig.fonts.body;
  if (domElements.fontCode) domElements.fontCode.value = currentConfig.fonts.code;

  // Load colors
  if (domElements.colorPrimary) domElements.colorPrimary.value = currentConfig.colors.primary;
  if (domElements.colorAccent) domElements.colorAccent.value = currentConfig.colors.accent;
  if (domElements.colorBackground) domElements.colorBackground.value = currentConfig.colors.background;
  if (domElements.colorText) domElements.colorText.value = currentConfig.colors.text;

  // Load animations
  if (domElements.animationTransition) domElements.animationTransition.value = currentConfig.animations.slideTransition;
  if (domElements.animationDuration) domElements.animationDuration.value = currentConfig.animations.duration;

  // Load font sizes
  if (currentConfig.fontSizes) {
    if (domElements.fontSizeH1Min) domElements.fontSizeH1Min.value = currentConfig.fontSizes.h1.min;
    if (domElements.fontSizeH1Base) domElements.fontSizeH1Base.value = currentConfig.fontSizes.h1.base;
    if (domElements.fontSizeH1Max) domElements.fontSizeH1Max.value = currentConfig.fontSizes.h1.max;
    if (domElements.fontSizeH2Min) domElements.fontSizeH2Min.value = currentConfig.fontSizes.h2.min;
    if (domElements.fontSizeH2Base) domElements.fontSizeH2Base.value = currentConfig.fontSizes.h2.base;
    if (domElements.fontSizeH2Max) domElements.fontSizeH2Max.value = currentConfig.fontSizes.h2.max;
    if (domElements.fontSizeTextMin) domElements.fontSizeTextMin.value = currentConfig.fontSizes.text.min;
    if (domElements.fontSizeTextBase) domElements.fontSizeTextBase.value = currentConfig.fontSizes.text.base;
    if (domElements.fontSizeTextMax) domElements.fontSizeTextMax.value = currentConfig.fontSizes.text.max;
  }

  // Load line height
  if (currentConfig.styles && currentConfig.styles.lineHeight) {
    if (domElements.lineHeightHeading) domElements.lineHeightHeading.value = currentConfig.styles.lineHeight.heading;
    if (domElements.lineHeightBody) domElements.lineHeightBody.value = currentConfig.styles.lineHeight.body;
  }

  // Load UI & Visual Effects
  if (currentConfig.styles) {
    if (domElements.previewOpacity) domElements.previewOpacity.value = currentConfig.styles.previewOpacity;
    if (domElements.overlayBlur) domElements.overlayBlur.value = parseInt(currentConfig.styles.overlayBlur);
    if (domElements.navBorderWidth) domElements.navBorderWidth.value = parseInt(currentConfig.styles.navBorderWidth);
    if (domElements.backdropSpread) domElements.backdropSpread.value = parseInt(currentConfig.styles.backdropGradientSpread);
    if (domElements.backdropBlur) domElements.backdropBlur.value = parseInt(currentConfig.styles.backdropBlur);
  }

  // Load Border Widths
  if (currentConfig.styles) {
    if (domElements.headingBorderWidth) domElements.headingBorderWidth.value = parseInt(currentConfig.styles.headingAccentBorderWidth);
    if (domElements.blockquoteBorderWidth) domElements.blockquoteBorderWidth.value = parseInt(currentConfig.styles.blockquoteBorderWidth);
    if (domElements.imageBorderWidth) domElements.imageBorderWidth.value = parseInt(currentConfig.styles.imageBorderWidth);
    if (domElements.linkUnderlineWidth) domElements.linkUnderlineWidth.value = parseInt(currentConfig.styles.linkUnderlineWidth);
    if (domElements.tableBorderWidth) domElements.tableBorderWidth.value = parseInt(currentConfig.styles.tableBorderWidth);
    if (domElements.hrBorderWidth) domElements.hrBorderWidth.value = parseInt(currentConfig.styles.hrBorderWidth);
  }

  // Load typography
  if (currentConfig.typography) {
    if (domElements.paragraphBefore) domElements.paragraphBefore.value = currentConfig.typography.paragraphSpacing.before;
    if (domElements.paragraphAfter) domElements.paragraphAfter.value = currentConfig.typography.paragraphSpacing.after;
    if (domElements.headingBefore) domElements.headingBefore.value = currentConfig.typography.headingSpacing.before;
    if (domElements.headingAfter) domElements.headingAfter.value = currentConfig.typography.headingSpacing.after;
    if (domElements.indentFirst) domElements.indentFirst.value = currentConfig.typography.indentation.firstLine;
    if (domElements.indentBlockquote) domElements.indentBlockquote.value = currentConfig.typography.indentation.blockQuote;
    if (domElements.listIndent) domElements.listIndent.value = currentConfig.typography.listIndent;
    if (domElements.textAlign) domElements.textAlign.value = currentConfig.typography.textAlign;
  }

  // Load Page Indicator
  if (currentConfig.styles) {
    if (domElements.pageIndicatorTop) domElements.pageIndicatorTop.value = parseInt(currentConfig.styles.pageIndicatorTop);
    if (domElements.pageIndicatorRight) domElements.pageIndicatorRight.value = parseInt(currentConfig.styles.pageIndicatorRight);
    if (domElements.pageIndicatorFontSize) domElements.pageIndicatorFontSize.value = parseFloat(currentConfig.styles.pageIndicatorFontSize);
    if (domElements.pageIndicatorOpacity) domElements.pageIndicatorOpacity.value = currentConfig.styles.pageIndicatorOpacity;
    if (domElements.pageIndicatorPaddingX) domElements.pageIndicatorPaddingX.value = parseInt(currentConfig.styles.pageIndicatorPaddingX);
    if (domElements.pageIndicatorPaddingY) domElements.pageIndicatorPaddingY.value = parseInt(currentConfig.styles.pageIndicatorPaddingY);
    if (domElements.pageIndicatorBgColor) domElements.pageIndicatorBgColor.value = currentConfig.styles.pageIndicatorBgColor;
    if (domElements.pageIndicatorTextColor) domElements.pageIndicatorTextColor.value = currentConfig.styles.pageIndicatorTextColor;
  }

  // Load Smart List Column Settings
  if (currentConfig.smartList) {
    if (domElements.smartListTwoColumn) domElements.smartListTwoColumn.value = currentConfig.smartList.twoColumnThreshold;
    if (domElements.smartListThreeColumn) domElements.smartListThreeColumn.value = currentConfig.smartList.threeColumnThreshold;
  }

  // Load Content Layout & Positioning Settings
  if (currentConfig.layout) {
    if (domElements.contentPaddingSmall) domElements.contentPaddingSmall.value = currentConfig.layout.contentPadding.small;
    if (domElements.contentPaddingLarge) domElements.contentPaddingLarge.value = currentConfig.layout.contentPadding.large;
    if (domElements.contentPaddingUltra) domElements.contentPaddingUltra.value = currentConfig.layout.contentPadding.ultra;
    if (domElements.contentAlignHorizontal) domElements.contentAlignHorizontal.value = currentConfig.layout.contentAlignment.horizontal;
    if (domElements.contentAlignVertical) domElements.contentAlignVertical.value = currentConfig.layout.contentAlignment.vertical;
  }
}

/**
 * Reload UI from current configuration (exported for external use)
 */
export function reloadUI(domElements) {
  loadConfigToUI(domElements);
}

/**
 * Load configuration from frontmatter object
 * @param {Object} frontmatter - Frontmatter key-value pairs
 * @param {Object} domElements - DOM element references for updating UI
 */
export function loadConfigFromFrontmatter(frontmatter, domElements) {
  // Load preset first if specified
  if (frontmatter['presentation.preset']) {
    const presetName = frontmatter['presentation.preset'];
    loadPreset(presetName);
    if (domElements && domElements.presetSelector) {
      domElements.presetSelector.value = presetName;
    }
  }

  // Load fonts (overrides preset if specified)
  const fontUpdates = {};
  if (frontmatter['presentation.fonts.heading']) {
    fontUpdates.heading = frontmatter['presentation.fonts.heading'];
  }
  if (frontmatter['presentation.fonts.body']) {
    fontUpdates.body = frontmatter['presentation.fonts.body'];
  }
  if (frontmatter['presentation.fonts.code']) {
    fontUpdates.code = frontmatter['presentation.fonts.code'];
  }
  if (Object.keys(fontUpdates).length > 0) {
    updateConfigPart('fonts', fontUpdates);
  }

  // Load colors
  const colorUpdates = {};
  if (frontmatter['presentation.colors.primary']) {
    colorUpdates.primary = frontmatter['presentation.colors.primary'];
  }
  if (frontmatter['presentation.colors.accent']) {
    colorUpdates.accent = frontmatter['presentation.colors.accent'];
  }
  if (frontmatter['presentation.colors.background']) {
    colorUpdates.background = frontmatter['presentation.colors.background'];
  }
  if (frontmatter['presentation.colors.text']) {
    colorUpdates.text = frontmatter['presentation.colors.text'];
  }
  if (Object.keys(colorUpdates).length > 0) {
    updateConfigPart('colors', colorUpdates);
  }

  // Load animations
  const animationUpdates = {};
  if (frontmatter['presentation.animations.slideTransition']) {
    animationUpdates.slideTransition = frontmatter['presentation.animations.slideTransition'];
  }
  if (frontmatter['presentation.animations.duration'] !== undefined) {
    animationUpdates.duration = parseFloat(frontmatter['presentation.animations.duration']);
  }
  if (Object.keys(animationUpdates).length > 0) {
    updateConfigPart('animations', animationUpdates);
  }

  // Load font sizes
  const fontSizeUpdates = {};
  
  if (frontmatter['presentation.fontSizes.h1.min'] !== undefined) {
    if (!fontSizeUpdates.h1) fontSizeUpdates.h1 = {};
    fontSizeUpdates.h1.min = parseFloat(frontmatter['presentation.fontSizes.h1.min']);
  }
  if (frontmatter['presentation.fontSizes.h1.base'] !== undefined) {
    if (!fontSizeUpdates.h1) fontSizeUpdates.h1 = {};
    fontSizeUpdates.h1.base = parseFloat(frontmatter['presentation.fontSizes.h1.base']);
  }
  if (frontmatter['presentation.fontSizes.h1.max'] !== undefined) {
    if (!fontSizeUpdates.h1) fontSizeUpdates.h1 = {};
    fontSizeUpdates.h1.max = parseFloat(frontmatter['presentation.fontSizes.h1.max']);
  }
  if (frontmatter['presentation.fontSizes.h2.min'] !== undefined) {
    if (!fontSizeUpdates.h2) fontSizeUpdates.h2 = {};
    fontSizeUpdates.h2.min = parseFloat(frontmatter['presentation.fontSizes.h2.min']);
  }
  if (frontmatter['presentation.fontSizes.h2.base'] !== undefined) {
    if (!fontSizeUpdates.h2) fontSizeUpdates.h2 = {};
    fontSizeUpdates.h2.base = parseFloat(frontmatter['presentation.fontSizes.h2.base']);
  }
  if (frontmatter['presentation.fontSizes.h2.max'] !== undefined) {
    if (!fontSizeUpdates.h2) fontSizeUpdates.h2 = {};
    fontSizeUpdates.h2.max = parseFloat(frontmatter['presentation.fontSizes.h2.max']);
  }
  if (frontmatter['presentation.fontSizes.text.min'] !== undefined) {
    if (!fontSizeUpdates.text) fontSizeUpdates.text = {};
    fontSizeUpdates.text.min = parseFloat(frontmatter['presentation.fontSizes.text.min']);
  }
  if (frontmatter['presentation.fontSizes.text.base'] !== undefined) {
    if (!fontSizeUpdates.text) fontSizeUpdates.text = {};
    fontSizeUpdates.text.base = parseFloat(frontmatter['presentation.fontSizes.text.base']);
  }
  if (frontmatter['presentation.fontSizes.text.max'] !== undefined) {
    if (!fontSizeUpdates.text) fontSizeUpdates.text = {};
    fontSizeUpdates.text.max = parseFloat(frontmatter['presentation.fontSizes.text.max']);
  }
  
  if (Object.keys(fontSizeUpdates).length > 0) {
    updateConfigPart('fontSizes', fontSizeUpdates);
  }

  // Load line height and UI styles
  const styleUpdates = {};
  if (frontmatter['presentation.styles.lineHeight.heading'] !== undefined || frontmatter['presentation.styles.lineHeight.body'] !== undefined) {
    styleUpdates.lineHeight = {};
    if (frontmatter['presentation.styles.lineHeight.heading'] !== undefined) {
      styleUpdates.lineHeight.heading = parseFloat(frontmatter['presentation.styles.lineHeight.heading']);
    }
    if (frontmatter['presentation.styles.lineHeight.body'] !== undefined) {
      styleUpdates.lineHeight.body = parseFloat(frontmatter['presentation.styles.lineHeight.body']);
    }
  }
  
  // Load UI & Visual Effects
  if (frontmatter['presentation.styles.previewOpacity'] !== undefined) {
    styleUpdates.previewOpacity = parseFloat(frontmatter['presentation.styles.previewOpacity']);
  }
  if (frontmatter['presentation.styles.overlayBlur']) {
    styleUpdates.overlayBlur = frontmatter['presentation.styles.overlayBlur'];
  }
  if (frontmatter['presentation.styles.navBorderWidth']) {
    styleUpdates.navBorderWidth = frontmatter['presentation.styles.navBorderWidth'];
  }
  if (frontmatter['presentation.styles.backdropGradientSpread']) {
    styleUpdates.backdropGradientSpread = frontmatter['presentation.styles.backdropGradientSpread'];
  }
  if (frontmatter['presentation.styles.backdropBlur']) {
    styleUpdates.backdropBlur = frontmatter['presentation.styles.backdropBlur'];
  }
  
  // Load Border Widths
  if (frontmatter['presentation.styles.headingAccentBorderWidth']) {
    styleUpdates.headingAccentBorderWidth = frontmatter['presentation.styles.headingAccentBorderWidth'];
  }
  if (frontmatter['presentation.styles.blockquoteBorderWidth']) {
    styleUpdates.blockquoteBorderWidth = frontmatter['presentation.styles.blockquoteBorderWidth'];
  }
  if (frontmatter['presentation.styles.imageBorderWidth']) {
    styleUpdates.imageBorderWidth = frontmatter['presentation.styles.imageBorderWidth'];
  }
  if (frontmatter['presentation.styles.linkUnderlineWidth']) {
    styleUpdates.linkUnderlineWidth = frontmatter['presentation.styles.linkUnderlineWidth'];
  }
  if (frontmatter['presentation.styles.tableBorderWidth']) {
    styleUpdates.tableBorderWidth = frontmatter['presentation.styles.tableBorderWidth'];
  }
  if (frontmatter['presentation.styles.hrBorderWidth']) {
    styleUpdates.hrBorderWidth = frontmatter['presentation.styles.hrBorderWidth'];
  }
  
  // Load Page Indicator
  if (frontmatter['presentation.styles.pageIndicatorTop']) {
    styleUpdates.pageIndicatorTop = frontmatter['presentation.styles.pageIndicatorTop'];
  }
  if (frontmatter['presentation.styles.pageIndicatorRight']) {
    styleUpdates.pageIndicatorRight = frontmatter['presentation.styles.pageIndicatorRight'];
  }
  if (frontmatter['presentation.styles.pageIndicatorFontSize']) {
    styleUpdates.pageIndicatorFontSize = frontmatter['presentation.styles.pageIndicatorFontSize'];
  }
  if (frontmatter['presentation.styles.pageIndicatorOpacity'] !== undefined) {
    styleUpdates.pageIndicatorOpacity = parseFloat(frontmatter['presentation.styles.pageIndicatorOpacity']);
  }
  if (frontmatter['presentation.styles.pageIndicatorPaddingX']) {
    styleUpdates.pageIndicatorPaddingX = frontmatter['presentation.styles.pageIndicatorPaddingX'];
  }
  if (frontmatter['presentation.styles.pageIndicatorPaddingY']) {
    styleUpdates.pageIndicatorPaddingY = frontmatter['presentation.styles.pageIndicatorPaddingY'];
  }
  if (frontmatter['presentation.styles.pageIndicatorBgColor']) {
    styleUpdates.pageIndicatorBgColor = frontmatter['presentation.styles.pageIndicatorBgColor'];
  }
  if (frontmatter['presentation.styles.pageIndicatorTextColor']) {
    styleUpdates.pageIndicatorTextColor = frontmatter['presentation.styles.pageIndicatorTextColor'];
  }
  
  if (Object.keys(styleUpdates).length > 0) {
    updateConfigPart('styles', styleUpdates);
  }

  // Load typography settings
  const typographyUpdates = {};
  
  if (frontmatter['presentation.typography.paragraphSpacing.before'] !== undefined) {
    if (!typographyUpdates.paragraphSpacing) typographyUpdates.paragraphSpacing = {};
    typographyUpdates.paragraphSpacing.before = parseFloat(frontmatter['presentation.typography.paragraphSpacing.before']);
  }
  if (frontmatter['presentation.typography.paragraphSpacing.after'] !== undefined) {
    if (!typographyUpdates.paragraphSpacing) typographyUpdates.paragraphSpacing = {};
    typographyUpdates.paragraphSpacing.after = parseFloat(frontmatter['presentation.typography.paragraphSpacing.after']);
  }
  if (frontmatter['presentation.typography.headingSpacing.before'] !== undefined) {
    if (!typographyUpdates.headingSpacing) typographyUpdates.headingSpacing = {};
    typographyUpdates.headingSpacing.before = parseFloat(frontmatter['presentation.typography.headingSpacing.before']);
  }
  if (frontmatter['presentation.typography.headingSpacing.after'] !== undefined) {
    if (!typographyUpdates.headingSpacing) typographyUpdates.headingSpacing = {};
    typographyUpdates.headingSpacing.after = parseFloat(frontmatter['presentation.typography.headingSpacing.after']);
  }
  if (frontmatter['presentation.typography.indentation.firstLine'] !== undefined) {
    if (!typographyUpdates.indentation) typographyUpdates.indentation = {};
    typographyUpdates.indentation.firstLine = parseFloat(frontmatter['presentation.typography.indentation.firstLine']);
  }
  if (frontmatter['presentation.typography.indentation.blockQuote'] !== undefined) {
    if (!typographyUpdates.indentation) typographyUpdates.indentation = {};
    typographyUpdates.indentation.blockQuote = parseFloat(frontmatter['presentation.typography.indentation.blockQuote']);
  }
  if (frontmatter['presentation.typography.listIndent'] !== undefined) {
    typographyUpdates.listIndent = parseFloat(frontmatter['presentation.typography.listIndent']);
  }
  if (frontmatter['presentation.typography.textAlign']) {
    typographyUpdates.textAlign = frontmatter['presentation.typography.textAlign'];
  }

  if (Object.keys(typographyUpdates).length > 0) {
    updateConfigPart('typography', typographyUpdates);
  }

  // Load Smart List Column Settings
  const smartListUpdates = {};
  if (frontmatter['presentation.smartList.twoColumnThreshold'] !== undefined) {
    smartListUpdates.twoColumnThreshold = parseInt(frontmatter['presentation.smartList.twoColumnThreshold']);
  }
  if (frontmatter['presentation.smartList.threeColumnThreshold'] !== undefined) {
    smartListUpdates.threeColumnThreshold = parseInt(frontmatter['presentation.smartList.threeColumnThreshold']);
  }
  if (Object.keys(smartListUpdates).length > 0) {
    updateConfigPart('smartList', smartListUpdates);
  }

  // Reload UI to reflect changes
  if (domElements) {
    reloadUI(domElements);
  }

  return currentConfig;
}

/**
 * Sync UI values back to configuration
 */
function syncUIToConfig(domElements) {
  console.log('[PresentationConfig] Syncing UI to config...', domElements);
  
  // Update fonts
  updateConfigPart('fonts', {
    heading: domElements.fontHeading?.value,
    body: domElements.fontBody?.value,
    code: domElements.fontCode?.value
  });

  // Update colors
  updateConfigPart('colors', {
    primary: domElements.colorPrimary?.value,
    accent: domElements.colorAccent?.value,
    background: domElements.colorBackground?.value,
    text: domElements.colorText?.value
  });

  // Update animations
  updateConfigPart('animations', {
    slideTransition: domElements.animationTransition?.value,
    duration: parseFloat(domElements.animationDuration?.value || currentConfig.animations.duration)
  });

  // Update font sizes
  updateConfigPart('fontSizes', {
    h1: {
      min: parseFloat(domElements.fontSizeH1Min?.value || currentConfig.fontSizes.h1.min),
      base: parseFloat(domElements.fontSizeH1Base?.value || currentConfig.fontSizes.h1.base),
      max: parseFloat(domElements.fontSizeH1Max?.value || currentConfig.fontSizes.h1.max)
    },
    h2: {
      min: parseFloat(domElements.fontSizeH2Min?.value || currentConfig.fontSizes.h2.min),
      base: parseFloat(domElements.fontSizeH2Base?.value || currentConfig.fontSizes.h2.base),
      max: parseFloat(domElements.fontSizeH2Max?.value || currentConfig.fontSizes.h2.max)
    },
    text: {
      min: parseFloat(domElements.fontSizeTextMin?.value || currentConfig.fontSizes.text.min),
      base: parseFloat(domElements.fontSizeTextBase?.value || currentConfig.fontSizes.text.base),
      max: parseFloat(domElements.fontSizeTextMax?.value || currentConfig.fontSizes.text.max)
    }
  });

  // Update line height and UI styles
  const currentStyles = currentConfig.styles || CONFIG_PRESETS.default.config.styles;
  updateConfigPart('styles', {
    ...currentStyles,
    lineHeight: {
      heading: parseFloat(domElements.lineHeightHeading?.value || currentStyles.lineHeight.heading),
      body: parseFloat(domElements.lineHeightBody?.value || currentStyles.lineHeight.body)
    },
    // UI & Visual Effects
    previewOpacity: parseFloat(domElements.previewOpacity?.value || currentStyles.previewOpacity),
    overlayBlur: `${domElements.overlayBlur?.value || parseInt(currentStyles.overlayBlur)}px`,
    navBorderWidth: `${domElements.navBorderWidth?.value || parseInt(currentStyles.navBorderWidth)}px`,
    backdropGradientSpread: `${domElements.backdropSpread?.value || parseInt(currentStyles.backdropGradientSpread)}%`,
    backdropBlur: `${domElements.backdropBlur?.value || parseInt(currentStyles.backdropBlur)}px`,
    // Border Widths
    headingAccentBorderWidth: `${domElements.headingBorderWidth?.value || parseInt(currentStyles.headingAccentBorderWidth)}px`,
    blockquoteBorderWidth: `${domElements.blockquoteBorderWidth?.value || parseInt(currentStyles.blockquoteBorderWidth)}px`,
    imageBorderWidth: `${domElements.imageBorderWidth?.value || parseInt(currentStyles.imageBorderWidth)}px`,
    linkUnderlineWidth: `${domElements.linkUnderlineWidth?.value || parseInt(currentStyles.linkUnderlineWidth)}px`,
    tableBorderWidth: `${domElements.tableBorderWidth?.value || parseInt(currentStyles.tableBorderWidth)}px`,
    hrBorderWidth: `${domElements.hrBorderWidth?.value || parseInt(currentStyles.hrBorderWidth)}px`,
    // Page Indicator
    pageIndicatorTop: `${domElements.pageIndicatorTop?.value || parseInt(currentStyles.pageIndicatorTop)}px`,
    pageIndicatorRight: `${domElements.pageIndicatorRight?.value || parseInt(currentStyles.pageIndicatorRight)}px`,
    pageIndicatorFontSize: `${domElements.pageIndicatorFontSize?.value || parseFloat(currentStyles.pageIndicatorFontSize)}rem`,
    pageIndicatorOpacity: parseFloat(domElements.pageIndicatorOpacity?.value || currentStyles.pageIndicatorOpacity),
    pageIndicatorPaddingX: `${domElements.pageIndicatorPaddingX?.value || parseInt(currentStyles.pageIndicatorPaddingX)}px`,
    pageIndicatorPaddingY: `${domElements.pageIndicatorPaddingY?.value || parseInt(currentStyles.pageIndicatorPaddingY)}px`,
    pageIndicatorBgColor: domElements.pageIndicatorBgColor?.value || currentStyles.pageIndicatorBgColor,
    pageIndicatorTextColor: domElements.pageIndicatorTextColor?.value || currentStyles.pageIndicatorTextColor
  });

  // Update typography (use current config as fallback)
  const currentTypography = currentConfig.typography || CONFIG_PRESETS.default.config.typography;
  
  updateTypography({
    paragraphSpacing: {
      before: parseFloat(domElements.paragraphBefore?.value || currentTypography.paragraphSpacing.before),
      after: parseFloat(domElements.paragraphAfter?.value || currentTypography.paragraphSpacing.after)
    },
    headingSpacing: {
      before: parseFloat(domElements.headingBefore?.value || currentTypography.headingSpacing.before),
      after: parseFloat(domElements.headingAfter?.value || currentTypography.headingSpacing.after)
    },
    indentation: {
      firstLine: parseFloat(domElements.indentFirst?.value || currentTypography.indentation.firstLine),
      hanging: currentTypography.indentation.hanging || 0,
      blockQuote: parseFloat(domElements.indentBlockquote?.value || currentTypography.indentation.blockQuote)
    },
    listIndent: parseFloat(domElements.listIndent?.value || currentTypography.listIndent),
    textAlign: domElements.textAlign?.value || currentTypography.textAlign
  });

  // Update Smart List Column Settings
  const currentSmartList = currentConfig.smartList || CONFIG_PRESETS.default.config.smartList;
  updateConfigPart('smartList', {
    twoColumnThreshold: parseInt(domElements.smartListTwoColumn?.value || currentSmartList.twoColumnThreshold),
    threeColumnThreshold: parseInt(domElements.smartListThreeColumn?.value || currentSmartList.threeColumnThreshold)
  });
  
  // Update Content Layout & Positioning Settings
  const currentLayout = currentConfig.layout || CONFIG_PRESETS.default.config.layout;
  updateConfigPart('layout', {
    contentPadding: {
      small: parseInt(domElements.contentPaddingSmall?.value || currentLayout.contentPadding.small),
      large: parseInt(domElements.contentPaddingLarge?.value || currentLayout.contentPadding.large),
      ultra: parseInt(domElements.contentPaddingUltra?.value || currentLayout.contentPadding.ultra)
    },
    contentAlignment: {
      horizontal: domElements.contentAlignHorizontal?.value || currentLayout.contentAlignment.horizontal,
      vertical: domElements.contentAlignVertical?.value || currentLayout.contentAlignment.vertical
    }
  });
  
  console.log('[PresentationConfig] ✅ UI synced to config successfully');

  // Trigger update callback
  if (uiCallbacks.onUpdate) {
    console.log('[PresentationConfig] Triggering onUpdate callback...');
    uiCallbacks.onUpdate();
  }
}

/**
 * Setup preset selector listener
 */
function setupPresetListener(domElements) {
  if (domElements.presetSelector) {
    domElements.presetSelector.addEventListener('change', (e) => {
      loadPreset(e.target.value);
      loadConfigToUI(domElements);
      
      if (uiCallbacks.onUpdate) {
        uiCallbacks.onUpdate();
      }
      
      if (uiCallbacks.setStatus) {
        uiCallbacks.setStatus(`Loaded preset: ${e.target.value}`, 'online');
      }
    });
  }
}

/**
 * Setup font change listeners
 */
function setupFontListeners(domElements) {
  [domElements.fontHeading, domElements.fontBody, domElements.fontCode].forEach(select => {
    if (select) {
      // Real-time update on change
      select.addEventListener('change', () => {
        syncUIToConfig(domElements);
      });
      
      // Visual feedback on hover
      setupVisualFeedback(select);
    }
  });
}

/**
 * Setup color change listeners
 */
function setupColorListeners(domElements) {
  [domElements.colorPrimary, domElements.colorAccent, domElements.colorBackground, domElements.colorText].forEach(input => {
    if (input) {
      // Real-time update on input
      input.addEventListener('input', () => {
        syncUIToConfig(domElements);
      });
      
      // Visual feedback on hover
      setupVisualFeedback(input);
    }
  });
}

/**
 * Setup animation change listeners
 */
function setupAnimationListeners(domElements) {
  [domElements.animationTransition, domElements.animationDuration].forEach(input => {
    if (input) {
      // Real-time update on change/input
      input.addEventListener('input', () => {
        syncUIToConfig(domElements);
      });
      input.addEventListener('change', () => {
        syncUIToConfig(domElements);
      });
      
      // Visual feedback on hover
      setupVisualFeedback(input);
    }
  });
}

/**
 * Setup font size and line height change listeners
 */
function setupFontSizeListeners(domElements) {
  [
    domElements.fontSizeH1Min, domElements.fontSizeH1Base, domElements.fontSizeH1Max,
    domElements.fontSizeH2Min, domElements.fontSizeH2Base, domElements.fontSizeH2Max,
    domElements.fontSizeTextMin, domElements.fontSizeTextBase, domElements.fontSizeTextMax,
    domElements.lineHeightHeading, domElements.lineHeightBody
  ].forEach(input => {
    if (input) {
      // Real-time update on input
      input.addEventListener('input', () => {
        syncUIToConfig(domElements);
      });
      
      // Visual feedback on hover
      setupVisualFeedback(input);
    }
  });
}

/**
 * Setup UI styles listeners
 */
function setupUIStylesListeners(domElements) {
  [
    domElements.previewOpacity, domElements.overlayBlur, domElements.navBorderWidth,
    domElements.backdropSpread, domElements.backdropBlur,
    domElements.headingBorderWidth, domElements.blockquoteBorderWidth,
    domElements.imageBorderWidth, domElements.linkUnderlineWidth,
    domElements.tableBorderWidth, domElements.hrBorderWidth,
    domElements.pageIndicatorTop, domElements.pageIndicatorRight,
    domElements.pageIndicatorFontSize, domElements.pageIndicatorOpacity,
    domElements.pageIndicatorPaddingX, domElements.pageIndicatorPaddingY,
    domElements.pageIndicatorBgColor, domElements.pageIndicatorTextColor,
    domElements.smartListTwoColumn, domElements.smartListThreeColumn
  ].forEach(input => {
    if (input) {
      // Real-time update on input
      input.addEventListener('input', () => {
        syncUIToConfig(domElements);
      });
      
      // Visual feedback on hover
      setupVisualFeedback(input);
    }
  });
}

/**
 * Setup visual feedback system
 * Highlights stage elements when hovering over related settings
 */
function setupVisualFeedback(inputElement) {
  if (!inputElement || !inputElement.id) return;
  
  const feedbackMap = {
    // Font settings -> all text elements
    'fontHeading': { selector: 'h1, h2, h3, h4, h5, h6', type: 'content' },
    'fontBody': { selector: 'p, li, blockquote', type: 'content' },
    'fontCode': { selector: 'code, pre', type: 'content' },
    
    // Font sizes -> specific headings
    'fontSizeH1Min': { selector: 'h1', type: 'content' },
    'fontSizeH1Base': { selector: 'h1', type: 'content' },
    'fontSizeH1Max': { selector: 'h1', type: 'content' },
    'fontSizeH2Min': { selector: 'h2', type: 'content' },
    'fontSizeH2Base': { selector: 'h2', type: 'content' },
    'fontSizeH2Max': { selector: 'h2', type: 'content' },
    'fontSizeTextMin': { selector: 'p, li', type: 'content' },
    'fontSizeTextBase': { selector: 'p, li', type: 'content' },
    'fontSizeTextMax': { selector: 'p, li', type: 'content' },
    
    // Colors -> elements with those colors
    'colorPrimary': { selector: 'h1, a', type: 'content' },
    'colorAccent': { selector: '.accent, .badge', type: 'content' },
    'colorBackground': { selector: '#stage', type: 'content' },
    'colorText': { selector: 'p, li, span', type: 'content' },
    
    // Line height
    'lineHeightHeading': { selector: 'h1, h2, h3', type: 'content' },
    'lineHeightBody': { selector: 'p, li', type: 'content' },
    
    // Border widths
    'headingBorderWidth': { selector: 'h1, h2, h3', type: 'content' },
    'blockquoteBorderWidth': { selector: 'blockquote', type: 'content' },
    'imageBorderWidth': { selector: 'img', type: 'content' },
    'linkUnderlineWidth': { selector: 'a', type: 'content' },
    'tableBorderWidth': { selector: 'table, td, th', type: 'content' },
    'hrBorderWidth': { selector: 'hr', type: 'content' },
    
    // Typography
    'paragraphBefore': { selector: 'p', type: 'content' },
    'paragraphAfter': { selector: 'p', type: 'content' },
    'headingBefore': { selector: 'h1, h2, h3', type: 'content' },
    'headingAfter': { selector: 'h1, h2, h3', type: 'content' },
    'indentBlockquote': { selector: 'blockquote', type: 'content' },
    'listIndent': { selector: 'ul, ol, li', type: 'content' },
    'textAlign': { selector: 'p, h1, h2, h3', type: 'content' },
    
    // Smart lists
    'smartListTwoColumn': { selector: 'ul, ol', type: 'content' },
    'smartListThreeColumn': { selector: 'ul, ol', type: 'content' },
    
    // Content Layout
    'contentPaddingSmall': { selector: '.scene', type: 'content' },
    'contentPaddingLarge': { selector: '.scene', type: 'content' },
    'contentPaddingUltra': { selector: '.scene', type: 'content' },
    'contentAlignHorizontal': { selector: '#slideContainer, .scene', type: 'content' },
    'contentAlignVertical': { selector: '#slideContainer, .scene', type: 'content' },
    
    // UI Elements
    'previewOpacity': { selector: '.scene:not(.active)', type: 'ui' },
    'overlayBlur': { selector: '#pauseOverlay', type: 'ui' },
    'navBorderWidth': { selector: '.nav-btn', type: 'ui' },
    'backdropSpread': { selector: '.gradient-backdrop', type: 'ui' },
    'backdropBlur': { selector: '.gradient-backdrop', type: 'ui' },
    'pageIndicatorTop': { selector: '#slideCounter', type: 'ui' },
    'pageIndicatorRight': { selector: '#slideCounter', type: 'ui' },
    'pageIndicatorFontSize': { selector: '#slideCounter', type: 'ui' },
    'pageIndicatorOpacity': { selector: '#slideCounter', type: 'ui' },
    'pageIndicatorPaddingX': { selector: '#slideCounter', type: 'ui' },
    'pageIndicatorPaddingY': { selector: '#slideCounter', type: 'ui' },
    'pageIndicatorBgColor': { selector: '#slideCounter', type: 'ui' },
    'pageIndicatorTextColor': { selector: '#slideCounter', type: 'ui' }
  };
  
  const mapping = feedbackMap[inputElement.id];
  if (!mapping) return;
  
  // Mouse enter - highlight elements
  inputElement.addEventListener('mouseenter', () => {
    const stage = document.getElementById('stage');
    if (!stage) return;
    
    const elements = stage.querySelectorAll(mapping.selector);
    elements.forEach(el => {
      // Add highlight class based on type
      if (mapping.type === 'content') {
        el.style.outline = '2px solid rgba(96, 165, 250, 0.5)'; // Blue for content
        el.style.outlineOffset = '4px';
        el.style.transition = 'outline 0.2s ease';
      } else {
        el.style.outline = '2px solid rgba(168, 85, 247, 0.5)'; // Purple for UI
        el.style.outlineOffset = '4px';
        el.style.transition = 'outline 0.2s ease';
      }
    });
    
    // Add visual feedback to the input itself
    const color = mapping.type === 'content' ? 'rgba(96, 165, 250, 0.3)' : 'rgba(168, 85, 247, 0.3)';
    inputElement.style.backgroundColor = color;
    inputElement.style.transition = 'background-color 0.2s ease';
  });
  
  // Mouse leave - remove highlight
  inputElement.addEventListener('mouseleave', () => {
    const stage = document.getElementById('stage');
    if (!stage) return;
    
    const elements = stage.querySelectorAll(mapping.selector);
    elements.forEach(el => {
      el.style.outline = '';
      el.style.outlineOffset = '';
    });
    
    // Remove input highlight
    inputElement.style.backgroundColor = '';
  });
}

/**
 * Setup typography change listeners
 */
function setupTypographyListeners(domElements) {
  [
    domElements.paragraphBefore, domElements.paragraphAfter,
    domElements.headingBefore, domElements.headingAfter,
    domElements.indentFirst, domElements.indentBlockquote,
    domElements.listIndent, domElements.textAlign
  ].forEach(input => {
    if (input) {
      // Real-time update on input
      input.addEventListener('input', () => {
        syncUIToConfig(domElements);
      });
      
      // Visual feedback on hover
      setupVisualFeedback(input);
    }
  });
}

/**
 * Setup layout change listeners
 */
function setupLayoutListeners(domElements) {
  [
    domElements.contentPaddingSmall, domElements.contentPaddingLarge, domElements.contentPaddingUltra,
    domElements.contentAlignHorizontal, domElements.contentAlignVertical
  ].forEach(input => {
    if (input) {
      // Real-time update on input
      input.addEventListener('input', () => {
        syncUIToConfig(domElements);
      });
      
      // Real-time update on change (for select elements)
      input.addEventListener('change', () => {
        syncUIToConfig(domElements);
      });
      
      // Visual feedback on hover
      setupVisualFeedback(input);
    }
  });
}

/**
 * Setup Save and Reset buttons
 */
function setupActionButtons(domElements) {
  // Save button
  if (domElements.saveSettingsBtn) {
    domElements.saveSettingsBtn.addEventListener('click', () => {
      if (uiCallbacks.onSave) {
        uiCallbacks.onSave(currentConfig, domElements.presetSelector?.value);
      }
      
      if (uiCallbacks.setStatus) {
        uiCallbacks.setStatus('Settings saved to frontmatter', 'online');
      }
    });
  }

  // Reset button
  if (domElements.resetSettingsBtn) {
    domElements.resetSettingsBtn.addEventListener('click', () => {
      resetConfig();
      loadConfigToUI(domElements);
      
      if (domElements.presetSelector) {
        domElements.presetSelector.value = 'default';
      }
      
      if (uiCallbacks.onUpdate) {
        uiCallbacks.onUpdate();
      }
      
      if (uiCallbacks.setStatus) {
        uiCallbacks.setStatus('Settings reset to default', 'online');
      }
    });
  }
}

// Auto-apply on load
if (typeof window !== 'undefined') {
  window.addEventListener('DOMContentLoaded', () => {
    applyConfigToDOM();
  });
}