/* ================================================================
   AI Listing Studio — Design System
   Luxury Apple-inspired dark/light glassmorphism UI
   ================================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

/* ─── CSS Custom Properties ─────────────────────────────────── */
:root {
  /* Color Primitives */
  --hue-primary: 250;
  --hue-accent: 195;

  /* Dark Mode (default) */
  --bg-base:      #0a0a0f;
  --bg-surface:   #111118;
  --bg-elevated:  #18181f;
  --bg-card:      rgba(255,255,255,0.04);
  --bg-glass:     rgba(255,255,255,0.06);
  --bg-glass-hover: rgba(255,255,255,0.09);

  --border-subtle:  rgba(255,255,255,0.07);
  --border-medium:  rgba(255,255,255,0.12);
  --border-strong:  rgba(255,255,255,0.20);

  --text-primary:   #f0f0f8;
  --text-secondary: #8888a8;
  --text-muted:     #555568;
  --text-inverse:   #0a0a0f;

  --accent-primary:  hsl(250, 80%, 65%);
  --accent-secondary: hsl(195, 80%, 55%);
  --accent-success:  hsl(145, 65%, 50%);
  --accent-warning:  hsl(38, 90%, 58%);
  --accent-danger:   hsl(5, 75%, 60%);

  --gradient-primary: linear-gradient(135deg, hsl(250,80%,60%) 0%, hsl(195,80%,55%) 100%);
  --gradient-surface: linear-gradient(135deg, rgba(255,255,255,0.06) 0%, rgba(255,255,255,0.02) 100%);
  --gradient-glow:    radial-gradient(ellipse at 50% 0%, hsl(250,80%,20%) 0%, transparent 70%);

  --shadow-sm:   0 1px 3px rgba(0,0,0,0.4);
  --shadow-md:   0 4px 12px rgba(0,0,0,0.5);
  --shadow-lg:   0 8px 32px rgba(0,0,0,0.6);
  --shadow-glow: 0 0 40px rgba(100,80,220,0.15);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --transition-fast: 0.15s cubic-bezier(0.4,0,0.2,1);
  --transition-med:  0.25s cubic-bezier(0.4,0,0.2,1);
  --transition-slow: 0.4s cubic-bezier(0.4,0,0.2,1);

  --sidebar-width: 260px;
  --header-height: 60px;
}

/* Light Mode */
[data-theme="light"] {
  --bg-base:      #f5f5fa;
  --bg-surface:   #ffffff;
  --bg-elevated:  #f0f0f8;
  --bg-card:      rgba(0,0,0,0.03);
  --bg-glass:     rgba(255,255,255,0.7);
  --bg-glass-hover: rgba(255,255,255,0.9);

  --border-subtle:  rgba(0,0,0,0.06);
  --border-medium:  rgba(0,0,0,0.10);
  --border-strong:  rgba(0,0,0,0.18);

  --text-primary:   #0f0f1a;
  --text-secondary: #555568;
  --text-muted:     #9999b0;
  --text-inverse:   #ffffff;

  --shadow-sm:   0 1px 3px rgba(0,0,0,0.08);
  --shadow-md:   0 4px 12px rgba(0,0,0,0.10);
  --shadow-lg:   0 8px 32px rgba(0,0,0,0.12);
  --shadow-glow: 0 0 40px rgba(100,80,220,0.08);

  --gradient-glow: radial-gradient(ellipse at 50% 0%, hsl(250,80%,90%) 0%, transparent 70%);
}

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

html { scroll-behavior: smooth; font-size: 16px; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-sans);
  background: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background var(--transition-med), color var(--transition-med);
}

/* ─── App Layout ────────────────────────────────────────────── */
.app-shell {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-surface);
  border-right: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  z-index: 100;
  transition: transform var(--transition-med);
  overflow-y: auto;
  overflow-x: hidden;
}

.sidebar-logo {
  padding: 20px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.logo-text {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}
.logo-text span {
  display: block;
  font-size: 11px;
  font-weight: 400;
  color: var(--text-muted);
}

.nav-section {
  padding: 16px 12px 8px;
}
.nav-section-label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  text-transform: uppercase;
  padding: 0 8px;
  margin-bottom: 4px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 13.5px;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
  user-select: none;
}

.nav-item:hover {
  background: var(--bg-glass-hover);
  color: var(--text-primary);
}

.nav-item.active {
  background: rgba(100,80,220,0.12);
  color: var(--accent-primary);
}

.nav-item .nav-icon { font-size: 16px; width: 20px; text-align: center; flex-shrink: 0; }
.nav-item .nav-badge {
  margin-left: auto;
  background: var(--accent-primary);
  color: white;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: var(--radius-full);
}

/* Main Content */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Header */
.app-header {
  height: var(--header-height);
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(20px);
}

.header-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}

.header-spacer { flex: 1; }

.header-actions { display: flex; align-items: center; gap: 8px; }

/* Page Container */
.page-container {
  flex: 1;
  padding: 24px;
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
}

/* ─── Cards & Glass ─────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 20px;
  transition: all var(--transition-fast);
}

.card-glass {
  background: var(--bg-glass);
  backdrop-filter: blur(20px) saturate(1.5);
  -webkit-backdrop-filter: blur(20px) saturate(1.5);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
}

.card-elevated {
  background: var(--bg-elevated);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

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

/* ─── Typography ────────────────────────────────────────────── */
h1 { font-size: 28px; font-weight: 800; letter-spacing: -0.5px; }
h2 { font-size: 22px; font-weight: 700; letter-spacing: -0.3px; }
h3 { font-size: 17px; font-weight: 600; }
h4 { font-size: 14px; font-weight: 600; }

.text-gradient {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }

/* ─── Buttons ───────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition-fast);
  text-decoration: none;
  user-select: none;
  white-space: nowrap;
  font-family: var(--font-sans);
}

.btn:disabled { opacity: 0.5; cursor: not-allowed; pointer-events: none; }

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 2px 12px rgba(100,80,220,0.3);
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(100,80,220,0.4);
}
.btn-primary:active { transform: translateY(0); }

.btn-secondary {
  background: var(--bg-glass);
  color: var(--text-primary);
  border: 1px solid var(--border-medium);
}
.btn-secondary:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-strong);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid transparent;
}
.btn-ghost:hover {
  background: var(--bg-glass);
  color: var(--text-primary);
  border-color: var(--border-subtle);
}

.btn-danger {
  background: rgba(220,50,50,0.15);
  color: var(--accent-danger);
  border: 1px solid rgba(220,50,50,0.25);
}
.btn-danger:hover {
  background: rgba(220,50,50,0.25);
  border-color: var(--accent-danger);
}

.btn-sm { padding: 6px 12px; font-size: 12px; border-radius: var(--radius-sm); }
.btn-lg { padding: 12px 24px; font-size: 16px; border-radius: var(--radius-lg); }
.btn-icon { padding: 8px; border-radius: var(--radius-md); min-width: 36px; min-height: 36px; }

/* Loading spinner */
.btn-loading::before {
  content: '';
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  display: inline-block;
}

/* ─── Forms ────────────────────────────────────────────────── */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
}

.form-control,
input[type="text"],
input[type="url"],
input[type="email"],
input[type="password"],
input[type="number"],
select,
textarea {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-glass);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  font-size: 14px;
  font-family: var(--font-sans);
  color: var(--text-primary);
  outline: none;
  transition: all var(--transition-fast);
  appearance: none;
}

.form-control:focus,
input:focus,
select:focus,
textarea:focus {
  border-color: var(--accent-primary);
  background: var(--bg-glass-hover);
  box-shadow: 0 0 0 3px rgba(100,80,220,0.15);
}

textarea { resize: vertical; min-height: 100px; line-height: 1.6; }

select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238888a8' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
  cursor: pointer;
}

select option { background: var(--bg-elevated); }

.form-hint { font-size: 12px; color: var(--text-muted); }

/* ─── Upload Zone ───────────────────────────────────────────── */
.upload-zone {
  border: 2px dashed var(--border-medium);
  border-radius: var(--radius-xl);
  padding: 40px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-med);
  background: var(--bg-card);
  position: relative;
}

.upload-zone:hover,
.upload-zone.drag-over {
  border-color: var(--accent-primary);
  background: rgba(100,80,220,0.05);
}

.upload-zone.drag-over {
  transform: scale(1.01);
  box-shadow: 0 0 0 4px rgba(100,80,220,0.1);
}

.upload-icon { font-size: 48px; margin-bottom: 12px; opacity: 0.7; }
.upload-title { font-size: 16px; font-weight: 600; margin-bottom: 6px; }
.upload-hint { font-size: 13px; color: var(--text-muted); }

.upload-preview {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: inline-block;
}
.upload-preview img {
  max-width: 100%;
  max-height: 300px;
  border-radius: var(--radius-lg);
  display: block;
}
.upload-preview .remove-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  background: rgba(0,0,0,0.7);
  color: white;
  border: none;
  border-radius: var(--radius-full);
  width: 28px;
  height: 28px;
  cursor: pointer;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ─── Platform Selector ─────────────────────────────────────── */
.platform-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 8px;
}

.platform-chip {
  padding: 8px 12px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-medium);
  background: var(--bg-card);
  cursor: pointer;
  text-align: center;
  transition: all var(--transition-fast);
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
}

.platform-chip:hover { border-color: var(--accent-primary); color: var(--text-primary); }
.platform-chip.selected {
  background: rgba(100,80,220,0.12);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}
.platform-chip .chip-icon { font-size: 18px; display: block; margin-bottom: 4px; }

/* ─── Results Panel ─────────────────────────────────────────── */
.result-section {
  margin-bottom: 24px;
}

.result-section-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-subtle);
}

.result-section-title {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

.result-field {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  margin-bottom: 8px;
  position: relative;
  transition: all var(--transition-fast);
}

.result-field:hover { border-color: var(--border-medium); }

.result-field-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 6px;
}

.result-field-content {
  font-size: 14px;
  color: var(--text-primary);
  line-height: 1.6;
  word-break: break-word;
}

.result-field-content.html-content { font-size: 13px; }

.copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.result-field:hover .copy-btn { opacity: 1; }

/* Score Cards */
.score-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 12px;
  margin-bottom: 24px;
}

.score-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 16px;
  text-align: center;
}

.score-value {
  font-size: 32px;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 4px;
}

.score-label {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.score-bar {
  height: 4px;
  background: var(--border-subtle);
  border-radius: 2px;
  margin-top: 8px;
  overflow: hidden;
}

.score-fill {
  height: 100%;
  border-radius: 2px;
  background: var(--gradient-primary);
  transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Color score thresholds */
.score-high .score-value  { color: var(--accent-success); }
.score-mid .score-value   { color: var(--accent-warning); }
.score-low .score-value   { color: var(--accent-danger); }
.score-high .score-fill   { background: var(--accent-success); }
.score-mid .score-fill    { background: var(--accent-warning); }
.score-low .score-fill    { background: var(--accent-danger); }

/* ─── Analysis Panel ────────────────────────────────────────── */
.analysis-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.analysis-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.analysis-key {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.analysis-value {
  font-size: 13px;
  color: var(--text-primary);
  font-weight: 500;
}

.color-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 8px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 500;
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  margin: 2px;
}

.tag-list { display: flex; flex-wrap: wrap; gap: 6px; }

.tag {
  padding: 4px 10px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.tag:hover { border-color: var(--accent-primary); color: var(--accent-primary); }
.tag.active { background: rgba(100,80,220,0.12); border-color: var(--accent-primary); color: var(--accent-primary); }

/* ─── Progress Bar ──────────────────────────────────────────── */
.progress-container {
  padding: 20px;
  text-align: center;
}

.progress-bar-track {
  height: 6px;
  background: var(--border-subtle);
  border-radius: 3px;
  overflow: hidden;
  margin: 12px 0;
}

.progress-bar-fill {
  height: 100%;
  background: var(--gradient-primary);
  border-radius: 3px;
  transition: width 0.5s ease;
}

.progress-steps {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ─── Loading States ────────────────────────────────────────── */
.skeleton {
  background: linear-gradient(90deg,
    var(--bg-elevated) 25%,
    var(--bg-glass-hover) 50%,
    var(--bg-elevated) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
}

@keyframes shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.skeleton-text { height: 14px; margin-bottom: 8px; }
.skeleton-title { height: 20px; width: 60%; margin-bottom: 16px; }
.skeleton-block { height: 80px; margin-bottom: 12px; }

/* ─── Tabs ──────────────────────────────────────────────────── */
.tabs {
  display: flex;
  gap: 4px;
  background: var(--bg-elevated);
  padding: 4px;
  border-radius: var(--radius-lg);
  margin-bottom: 20px;
  overflow-x: auto;
  scrollbar-width: none;
}

.tab-btn {
  padding: 8px 16px;
  border: none;
  background: transparent;
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  font-family: var(--font-sans);
}

.tab-btn:hover { color: var(--text-primary); }
.tab-btn.active {
  background: var(--bg-surface);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ─── Toggle Switch ─────────────────────────────────────────── */
.toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  cursor: pointer;
  gap: 10px;
  font-size: 14px;
  color: var(--text-secondary);
}

.toggle input { display: none; }

.toggle-track {
  width: 40px;
  height: 22px;
  background: var(--border-strong);
  border-radius: 11px;
  transition: background var(--transition-fast);
  position: relative;
  flex-shrink: 0;
}

.toggle-track::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  background: white;
  border-radius: 50%;
  top: 3px;
  left: 3px;
  transition: transform var(--transition-fast);
  box-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

.toggle input:checked + .toggle-track {
  background: var(--accent-primary);
}

.toggle input:checked + .toggle-track::after {
  transform: translateX(18px);
}

/* ─── Notifications / Toasts ────────────────────────────────── */
#toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

.toast {
  padding: 12px 16px;
  border-radius: var(--radius-lg);
  font-size: 13.5px;
  font-weight: 500;
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 10px;
  pointer-events: auto;
  animation: slideInRight 0.3s ease;
  max-width: 360px;
}

.toast-success { background: rgba(20,180,80,0.9); color: white; }
.toast-error   { background: rgba(220,50,50,0.9); color: white; }
.toast-info    { background: rgba(60,120,220,0.9); color: white; }
.toast-warning { background: rgba(220,140,20,0.9); color: white; }

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(40px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* ─── Modal ─────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(8px);
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: fadeIn 0.2s ease;
}

.modal-overlay.open { display: flex; }

.modal {
  background: var(--bg-elevated);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  animation: slideUp 0.3s cubic-bezier(0.4,0,0.2,1);
}

.modal-header {
  padding: 20px 24px 16px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  gap: 12px;
}

.modal-body { padding: 24px; }
.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px) scale(0.97); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* ─── Chips / Badges ────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 8px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 600;
}

.badge-success { background: rgba(20,180,80,0.15); color: var(--accent-success); }
.badge-warning { background: rgba(220,140,20,0.15); color: var(--accent-warning); }
.badge-danger  { background: rgba(220,50,50,0.15);  color: var(--accent-danger); }
.badge-info    { background: rgba(60,120,220,0.15); color: #5588ff; }
.badge-primary { background: rgba(100,80,220,0.15); color: var(--accent-primary); }

/* ─── Grid System ───────────────────────────────────────────── */
.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-auto { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
.col-span-2 { grid-column: span 2; }

/* ─── Separator ─────────────────────────────────────────────── */
hr.divider {
  border: none;
  border-top: 1px solid var(--border-subtle);
  margin: 20px 0;
}

/* ─── Utilities ─────────────────────────────────────────────── */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-4 { gap: 4px; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.gap-20 { gap: 20px; }
.mt-auto { margin-top: auto; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-20 { margin-bottom: 20px; }
.mb-24 { margin-bottom: 24px; }
.p-0 { padding: 0; }
.w-full { width: 100%; }
.hidden { display: none !important; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.overflow-auto { overflow: auto; }
.text-right { text-align: right; }
.text-center { text-align: center; }
.font-mono { font-family: var(--font-mono); }
.font-bold { font-weight: 700; }

/* ─── Scrollbar ─────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ─── Animations ────────────────────────────────────────────── */
@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.5; }
}

.animate-spin { animation: spin 1s linear infinite; }
.animate-pulse { animation: pulse 2s ease infinite; }

.fade-in {
  animation: fadeIn 0.4s ease;
}

/* Glow top decoration */
.page-glow {
  position: fixed;
  top: 0;
  left: var(--sidebar-width);
  right: 0;
  height: 400px;
  background: var(--gradient-glow);
  pointer-events: none;
  z-index: -1;
}

/* ─── Responsive ────────────────────────────────────────────── */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 20px;
  cursor: pointer;
  padding: 4px;
}

@media (max-width: 1024px) {
  :root { --sidebar-width: 240px; }
}

@media (max-width: 768px) {
  :root { --sidebar-width: 260px; }

  .mobile-menu-btn { display: flex; }

  .sidebar {
    transform: translateX(-100%);
    box-shadow: var(--shadow-lg);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .main-content {
    margin-left: 0;
  }

  .page-container { padding: 16px; }

  .grid-2, .grid-3 { grid-template-columns: 1fr; }

  .analysis-grid { grid-template-columns: 1fr; }

  .score-grid { grid-template-columns: repeat(2, 1fr); }

  .platform-grid { grid-template-columns: repeat(auto-fill, minmax(90px, 1fr)); }

  h1 { font-size: 22px; }
  h2 { font-size: 18px; }

  .col-span-2 { grid-column: span 1; }
}

@media (max-width: 480px) {
  .tabs { flex-wrap: wrap; }
  .score-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ─── Specific Page Styles ──────────────────────────────────── */

/* Two-panel generator layout */
.generator-layout {
  display: grid;
  grid-template-columns: 420px 1fr;
  gap: 20px;
  align-items: start;
}

.input-panel {
  position: sticky;
  top: calc(var(--header-height) + 24px);
}

.result-panel { min-height: 400px; }

/* History list */
.history-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  cursor: pointer;
  transition: all var(--transition-fast);
  margin-bottom: 8px;
}

.history-item:hover { border-color: var(--border-medium); background: var(--bg-glass-hover); }

.history-platform-badge {
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-weight: 600;
  background: rgba(100,80,220,0.12);
  color: var(--accent-primary);
  white-space: nowrap;
}

/* API Key manager */
.key-list-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  margin-bottom: 8px;
  transition: all var(--transition-fast);
}

.key-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.key-indicator.active { background: var(--accent-success); box-shadow: 0 0 8px var(--accent-success); }
.key-indicator.inactive { background: var(--text-muted); }

/* Competitor result */
.gap-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  background: rgba(220,140,20,0.1);
  border: 1px solid rgba(220,140,20,0.25);
  border-radius: var(--radius-full);
  font-size: 12px;
  color: var(--accent-warning);
  margin: 2px;
}

.opportunity-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  background: rgba(20,180,80,0.1);
  border: 1px solid rgba(20,180,80,0.2);
  border-radius: var(--radius-full);
  font-size: 12px;
  color: var(--accent-success);
  margin: 2px;
}

/* Bulk upload drop area */
.bulk-drop-area {
  border: 2px dashed var(--border-medium);
  border-radius: var(--radius-xl);
  padding: 60px 40px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-med);
  background: var(--bg-card);
}
.bulk-drop-area:hover, .bulk-drop-area.drag-over {
  border-color: var(--accent-primary);
  background: rgba(100,80,220,0.04);
}

/* Collection artwork card */
.artwork-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 16px;
  transition: all var(--transition-fast);
}
.artwork-card:hover { border-color: var(--accent-primary); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.artwork-number {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 700; color: white; flex-shrink: 0;
}

/* Code block */
.code-block {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  overflow-x: auto;
  color: var(--text-secondary);
  white-space: pre-wrap;
  word-break: break-all;
}

@media (max-width: 1100px) {
  .generator-layout {
    grid-template-columns: 1fr;
  }
  .input-panel {
    position: static;
  }
}