/* ==========================================================================
   BiliExtract Design System
   Theme: Pure White with Orange & Rose Accents
   ========================================================================== */

:root {
  /* Surface & Base Colors */
  --bg-body: #ffffff;
  --bg-surface: #ffffff;
  --bg-surface-alt: #fafafc;
  --bg-input: #ffffff;
  --border-subtle: #f0f0f4;
  --border-focus: #ff6b00;

  /* Typography */
  --text-primary: #111827;
  --text-secondary: #4b5563;
  --text-muted: #9ca3af;
  --text-on-gradient: #ffffff;

  /* Brand Accents: Orange & Rose ONLY */
  --orange-500: #ff6b00;
  --orange-600: #ea580c;
  --orange-50: #fff7ed;
  --orange-100: #ffedd5;

  --rose-500: #f43f5e;
  --rose-600: #e11d48;
  --rose-50: #fff1f2;
  --rose-100: #ffe4e6;

  /* Brand Gradients */
  --gradient-primary: linear-gradient(135deg, #ff6b00 0%, #f43f5e 100%);
  --gradient-hover: linear-gradient(135deg, #ea580c 0%, #e11d48 100%);
  --gradient-subtle: linear-gradient(135deg, rgba(255, 107, 0, 0.08) 0%, rgba(244, 63, 94, 0.08) 100%);
  --gradient-text: linear-gradient(135deg, #ff6b00 20%, #f43f5e 80%);

  /* Elevations */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 16px -2px rgba(255, 107, 0, 0.08), 0 2px 6px -1px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 12px 30px -4px rgba(255, 107, 0, 0.12), 0 4px 12px -2px rgba(244, 63, 94, 0.08);
  --shadow-glow: 0 0 24px rgba(255, 107, 0, 0.25);

  /* Radii & Transitions */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  --transition-fast: 0.18s ease;
  --transition-smooth: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-body);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-body);
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

button, input {
  font: inherit;
}

/* Layout Container */
.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Typography Utilities */
.text-gradient {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

/* Buttons */
.btn-primary {
  background: var(--gradient-primary);
  color: var(--text-on-gradient);
  font-weight: 600;
  padding: 12px 24px;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  box-shadow: 0 4px 14px rgba(244, 63, 94, 0.3);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-primary:hover {
  background: var(--gradient-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(255, 107, 0, 0.4);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: var(--bg-surface);
  color: var(--orange-500);
  border: 1px solid var(--border-subtle);
  font-weight: 600;
  padding: 10px 20px;
  border-radius: var(--radius-full);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all var(--transition-fast);
}

.btn-secondary:hover {
  background: var(--orange-50);
  border-color: var(--orange-500);
  color: var(--orange-600);
}

/* Badges & Tags */
.badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 600;
  background: var(--gradient-subtle);
  color: var(--rose-600);
  border: 1px solid rgba(244, 63, 94, 0.15);
}

.badge-tag svg {
  color: var(--orange-500);
}

/* Card Styles */
.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-smooth);
}

.card:hover {
  border-color: rgba(255, 107, 0, 0.3);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

/* Animations */
@keyframes pulseGlow {
  0%, 100% {
    box-shadow: 0 0 16px rgba(255, 107, 0, 0.2);
  }
  50% {
    box-shadow: 0 0 28px rgba(244, 63, 94, 0.4);
  }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.animate-spin {
  animation: spin 0.8s linear infinite;
}

.animate-glow {
  animation: pulseGlow 3s infinite;
}