@import url('https://fonts.googleapis.com/css2?family=Lora:ital,wght@0,400;0,500;0,600;0,700;1,400&family=Playfair+Display:ital,wght@0,500;0,600;0,700;0,800;1,500&family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

/* ── Core Design Tokens: Prestige Legal Theme ── */
:root {
  --font-base: 'Plus Jakarta Sans', system-ui, sans-serif;
  --font-display: 'Playfair Display', serif;
  --font-serif: 'Lora', Georgia, serif;

  /* Color Palette (Obsidian Blue & Burnished Gold) */
  --bg-base: hsl(220, 32%, 7%);
  --bg-surface: hsla(220, 28%, 11%, 0.75);
  --bg-surface-elevated: hsla(220, 24%, 15%, 0.85);
  --bg-nav: hsla(220, 32%, 8%, 0.85);
  
  /* Gold-tinted Border Accents */
  --border-color: hsla(36, 38%, 64%, 0.1);
  --border-color-hover: hsla(36, 38%, 64%, 0.22);
  --border-focus: hsl(36, 38%, 64%);
  
  --text-primary: hsl(210, 25%, 98%);
  --text-secondary: hsl(215, 16%, 76%);
  --text-muted: hsl(215, 12%, 52%);
  
  /* Brand Accent: Burnished Gold & Bronze */
  --color-accent: hsl(36, 38%, 64%);
  --color-accent-hover: hsl(36, 45%, 70%);
  --color-accent-glow: hsla(36, 38%, 64%, 0.12);
  --color-accent-gradient: linear-gradient(135deg, hsl(36, 38%, 64%) 0%, hsl(45, 45%, 52%) 100%);
  
  /* Editorial Semantic Scales */
  --color-low: hsl(150, 40%, 48%);
  --color-low-bg: hsla(150, 40%, 48%, 0.12);
  --color-low-glow: hsla(150, 40%, 48%, 0.2);

  --color-medium: hsl(36, 68%, 52%);
  --color-medium-bg: hsla(36, 68%, 52%, 0.12);
  --color-medium-glow: hsla(36, 68%, 52%, 0.2);

  --color-high: hsl(355, 62%, 54%);
  --color-high-bg: hsla(355, 62%, 54%, 0.12);
  --color-high-glow: hsla(355, 62%, 54%, 0.2);

  --color-critical: hsl(325, 64%, 48%);
  --color-critical-bg: hsla(325, 64%, 48%, 0.12);
  --color-critical-glow: hsla(325, 64%, 48%, 0.2);

  /* Animation Utilities */
  --transition-fast: 0.15s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 25px var(--color-accent-glow);
}

/* ── Light Mode Overrides (Warm Editorial Parchment) ── */
:root.light-mode {
  --bg-base: hsl(36, 24%, 93%);
  --bg-surface: hsla(36, 20%, 98%, 0.85);
  --bg-surface-elevated: hsl(0, 0%, 100%);
  --bg-nav: hsla(36, 24%, 93%, 0.85);
  
  --border-color: hsla(36, 38%, 30%, 0.15);
  --border-color-hover: hsla(36, 38%, 30%, 0.28);
  --border-focus: hsl(36, 52%, 36%);
  
  --text-primary: hsl(220, 32%, 12%);
  --text-secondary: hsl(220, 20%, 32%);
  --text-muted: hsl(220, 15%, 52%);
  
  --color-accent: hsl(36, 52%, 36%);
  --color-accent-hover: hsl(36, 58%, 30%);
  --color-accent-glow: hsla(36, 52%, 36%, 0.1);
  --color-accent-gradient: linear-gradient(135deg, hsl(36, 52%, 36%) 0%, hsl(45, 52%, 30%) 100%);

  --color-low: hsl(150, 48%, 32%);
  --color-low-bg: hsla(150, 48%, 32%, 0.1);
  --color-medium: hsl(36, 72%, 40%);
  --color-medium-bg: hsla(36, 72%, 40%, 0.1);
  --color-high: hsl(355, 68%, 46%);
  --color-high-bg: hsla(355, 68%, 46%, 0.1);
  --color-critical: hsl(295, 68%, 38%);
  --color-critical-bg: hsla(295, 68%, 38%, 0.1);
}

/* Theme Toggle Button Styling */
.theme-toggle {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  cursor: pointer;
  padding: 8px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}
.theme-toggle:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: hsla(36, 38%, 64%, 0.05);
}
.theme-toggle svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2px;
}


/* ── Global Styles ── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-base);
  background-color: var(--bg-base);
  background-image: 
    radial-gradient(at 0% 0%, hsla(36, 38%, 64%, 0.08) 0px, transparent 40%),
    radial-gradient(at 100% 100%, hsla(220, 40%, 15%, 0.15) 0px, transparent 50%);
  background-attachment: fixed;
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-base);
}
::-webkit-scrollbar-thumb {
  background: hsla(36, 38%, 64%, 0.15);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: hsla(36, 38%, 64%, 0.3);
}

/* ── Typography ── */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.serif-body {
  font-family: var(--font-serif);
}

a {
  color: var(--text-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

/* ── Navbar Component ── */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-nav);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.navbar {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(120deg, var(--text-primary) 30%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-brand svg {
  width: 22px;
  height: 22px;
  stroke: var(--color-accent);
  stroke-width: 2.2px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
  position: relative;
  padding: 6px 0;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent-gradient);
  transition: width var(--transition-normal);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-link:hover {
  color: var(--text-primary);
}

/* ── Glassmorphic Cards ── */
.glass-card {
  background: var(--bg-surface);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal), transform var(--transition-normal);
}

.glass-card:hover {
  border-color: var(--border-color-hover);
}

/* ── General Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 22px;
  font-family: var(--font-base);
  font-size: 0.88rem;
  font-weight: 700;
  border-radius: 6px;
  border: 1px solid transparent;
  cursor: pointer;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  transition: all var(--transition-fast);
}

.btn-primary {
  background: var(--color-accent-gradient);
  color: hsl(220, 32%, 7%);
  box-shadow: 0 4px 15px var(--color-accent-glow);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px hsla(36, 38%, 64%, 0.35);
  background: linear-gradient(135deg, hsl(36, 45%, 70%) 0%, hsl(45, 55%, 58%) 100%);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0);
}

.btn-outline {
  background: transparent;
  border-color: var(--border-color);
  color: var(--color-accent);
}

.btn-outline:hover:not(:disabled) {
  background: hsla(36, 38%, 64%, 0.05);
  border-color: var(--color-accent);
  color: var(--text-primary);
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

/* ── Inputs ── */
.input-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.input-label {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

input[type="text"],
input[type="email"],
input[type="password"] {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 12px 14px;
  color: var(--text-primary);
  font-family: var(--font-base);
  font-size: 0.9rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px hsla(36, 38%, 64%, 0.15);
}

/* ── Footer ── */
footer {
  text-align: center;
  padding: 36px 20px;
  font-size: 0.78rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-color);
  margin-top: auto;
  letter-spacing: 0.02em;
}

/* ── Layout & Responsiveness ── */
main {
  flex: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 24px;
  width: 100%;
}

@media (max-width: 768px) {
  .navbar {
    padding: 16px 20px;
  }
  main {
    padding: 32px 16px;
  }
}