@tailwind base;
@tailwind components;
@tailwind utilities;

/* ===== CSS Custom Properties ===== */
:root {
  --vh: 1vh;
  --color-bg-primary: #0f172a;
  --color-bg-secondary: #1e293b;
  --color-bg-tertiary: #334155;
  --color-text-primary: #f8fafc;
  --color-text-secondary: #94a3b8;
  --color-accent: #3b82f6;
  --color-accent-secondary: #10b981;
  --color-danger: #ef4444;
  --color-warning: #f59e0b;
  --safe-area-top: env(safe-area-inset-top, 0px);
  --safe-area-bottom: env(safe-area-inset-bottom, 0px);
  --safe-area-left: env(safe-area-inset-left, 0px);
  --safe-area-right: env(safe-area-inset-right, 0px);
}

/* ===== Base Styles ===== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
    'Helvetica Neue', Arial, sans-serif;
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  overflow: hidden;
  overscroll-behavior: none;
}

/* ===== Mobile Viewport Height Fix (iOS Safari) ===== */
.h-screen-safe {
  height: calc(var(--vh, 1vh) * 100);
}

/* ===== Safe Area Padding ===== */
.pt-safe {
  padding-top: var(--safe-area-top);
}
.pb-safe {
  padding-bottom: var(--safe-area-bottom);
}
.pl-safe {
  padding-left: var(--safe-area-left);
}
.pr-safe {
  padding-right: var(--safe-area-right);
}

/* ===== Prevent Zoom on Input Focus (iOS) ===== */
input,
textarea,
select {
  font-size: 16px !important;
}

/* ===== Touch Targets (Apple HIG: 44x44px minimum) ===== */
.touch-target {
  min-height: 44px;
  min-width: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ===== Smooth Scrolling ===== */
.scroll-smooth {
  -webkit-overflow-scrolling: touch;
  scroll-behavior: smooth;
}

/* ===== Custom Scrollbar ===== */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: #475569;
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: #64748b;
}

/* ===== Selection Style ===== */
::selection {
  background-color: rgba(59, 130, 246, 0.3);
  color: #f8fafc;
}

/* ===== RTL Support ===== */
[dir='rtl'] .sidebar-nav {
  right: 0;
  left: auto;
}

[dir='rtl'] .message-user {
  margin-left: 0;
  margin-right: auto;
}

[dir='rtl'] .message-bot {
  margin-right: 0;
  margin-left: auto;
}

[dir='rtl'] .chat-input-area {
  flex-direction: row-reverse;
}

/* ===== Sidebar Menu Popup ===== */
.desktop-sidebar {
  overflow: visible !important;
}

/* ===== Animation Utilities ===== */
.animate-delay-100 {
  animation-delay: 100ms;
}

.animate-delay-200 {
  animation-delay: 200ms;
}

.animate-delay-300 {
  animation-delay: 300ms;
}

/* ===== Typing Indicator ===== */
.typing-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #64748b;
  animation: pulseDot 1.4s infinite ease-in-out both;
}

.typing-dot:nth-child(1) {
  animation-delay: -0.32s;
}

.typing-dot:nth-child(2) {
  animation-delay: -0.16s;
}

/* ===== Message Markdown Rendering ===== */
.message-content p {
  margin-bottom: 0.5rem;
}

.message-content p:last-child {
  margin-bottom: 0;
}

.message-content ul,
.message-content ol {
  padding-left: 1.5rem;
  margin-bottom: 0.5rem;
}

.message-content li {
  margin-bottom: 0.25rem;
}

.message-content code {
  background-color: rgba(71, 85, 105, 0.5);
  padding: 0.125rem 0.375rem;
  border-radius: 0.25rem;
  font-size: 0.875rem;
}

.message-content pre {
  background-color: rgba(15, 23, 42, 0.8);
  padding: 0.75rem;
  border-radius: 0.5rem;
  overflow-x: auto;
  margin-bottom: 0.5rem;
}

.message-content pre code {
  background: none;
  padding: 0;
}

.message-content strong {
  font-weight: 600;
  color: #f1f5f9;
}

.message-content h3,
.message-content h4 {
  font-weight: 600;
  margin-top: 0.75rem;
  margin-bottom: 0.375rem;
}

/* ===== Swipe Sheet ===== */
.swipe-sheet {
  transition: transform 0.3s cubic-bezier(0.32, 0.72, 0, 1);
  will-change: transform;
}

/* ===== Bottom Navigation ===== */
.bottom-nav {
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background-color: rgba(15, 23, 42, 0.85);
}

/* ===== PWA Standalone Mode ===== */
@media all and (display-mode: standalone) {
  body {
    -webkit-user-select: none;
    user-select: none;
  }

  .pwa-only {
    display: block;
  }

  .browser-only {
    display: none;
  }
}

@media not all and (display-mode: standalone) {
  .pwa-only {
    display: none;
  }
}

/* ===== Responsive Breakpoints ===== */
@media (max-width: 768px) {
  .desktop-sidebar {
    display: none;
  }

  .desktop-right-panel {
    display: none;
  }

  .mobile-bottom-nav {
    display: flex;
  }
}

@media (min-width: 769px) {
  .mobile-bottom-nav {
    display: none;
  }

  .mobile-header-compact {
    display: none;
  }
}

/* ===== Emergency Pulse Animation ===== */
@keyframes emergencyPulse {
  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.4);
  }
  50% {
    box-shadow: 0 0 0 12px rgba(239, 68, 68, 0);
  }
}

.emergency-pulse {
  animation: emergencyPulse 2s infinite;
}

/* ===== Voice Recording Indicator ===== */
@keyframes voicePulse {
  0%,
  100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.2);
    opacity: 0.7;
  }
}

.voice-recording {
  animation: voicePulse 1s infinite;
}