static/css/style.css

:root {
  --primary: #6C63FF;
  --primary-light: #8B85FF;
  --primary-dark: #4D44E8;
  --primary-rgb: 108, 99, 255;
  --secondary: #FF6584;
  --secondary-light: #FF8DA3;
  --secondary-rgb: 255, 101, 132;

  --bg-deep: #0f0c29;
  --bg-mid: #302b63;
  --bg-light: #24243e;
  --bg-gradient: linear-gradient(135deg, var(--bg-deep), var(--bg-mid), var(--bg-light));

  --glass-bg: rgba(255, 255, 255, 0.06);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-hover-bg: rgba(255, 255, 255, 0.1);
  --glass-blur: 20px;
  --card-bg: rgba(255, 255, 255, 0.04);
  --card-border: rgba(255, 255, 255, 0.08);
  --card-hover-bg: rgba(255, 255, 255, 0.07);
  --card-hover-border: rgba(var(--primary-rgb), 0.3);

  --text-primary: #ffffff;
  --text-body: #e0e0e0;
  --text-muted: rgba(255, 255, 255, 0.6);
  --text-dim: rgba(255, 255, 255, 0.4);

  --star: #FFD700;
  --tag-text: #a99bff;
  --tag-bg: rgba(var(--primary-rgb), 0.2);
  --tag-border: rgba(var(--primary-rgb), 0.3);
  --tag-brand-text: #ff9eb2;
  --tag-brand-bg: rgba(var(--secondary-rgb), 0.15);
  --tag-brand-border: rgba(var(--secondary-rgb), 0.3);

  --success: #22C55E;
  --error: #EF4444;
  --warning: #F59E0B;

  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 8px 25px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 8px 25px rgba(var(--primary-rgb), 0.4);

  --container-max: 1200px;
}

[data-theme="light"] {
  --bg-deep: #f0f2f5;
  --bg-mid: #e2e6ed;
  --bg-light: #ffffff;
  --bg-gradient: linear-gradient(135deg, #f0f2f5, #e2e6ed, #ffffff);

  --glass-bg: rgba(255, 255, 255, 0.75);
  --glass-border: rgba(0, 0, 0, 0.08);
  --glass-hover-bg: rgba(255, 255, 255, 0.9);
  --card-bg: rgba(255, 255, 255, 0.6);
  --card-border: rgba(0, 0, 0, 0.06);
  --card-hover-bg: rgba(255, 255, 255, 0.85);
  --card-hover-border: rgba(var(--primary-rgb), 0.2);

  --text-primary: #1a1a2e;
  --text-body: #333333;
  --text-muted: rgba(0, 0, 0, 0.55);
  --text-dim: rgba(0, 0, 0, 0.35);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 8px 25px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.1);
  --shadow-glow: 0 8px 25px rgba(var(--primary-rgb), 0.25);

  --tag-text: var(--primary);
  --tag-brand-text: var(--secondary);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-gradient);
  min-height: 100vh;
  color: var(--text-body);
  transition: background var(--transition-slow), color var(--transition-normal);
}

::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: rgba(var(--primary-rgb), 0.3);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(var(--primary-rgb), 0.5);
}

::selection {
  background: rgba(var(--primary-rgb), 0.3);
  color: var(--text-primary);
}

/* ===== AMBIENT BACKGROUND ===== */
.ambient-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}
.ambient-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.12;
  will-change: transform;
}
.ambient-blob-1 {
  width: 600px;
  height: 600px;
  background: var(--primary);
  top: -15%;
  left: -10%;
  animation: floatA 25s ease-in-out infinite;
}
.ambient-blob-2 {
  width: 500px;
  height: 500px;
  background: var(--secondary);
  bottom: -15%;
  right: -10%;
  animation: floatB 25s ease-in-out infinite;
  animation-delay: -8s;
}
.ambient-blob-3 {
  width: 400px;
  height: 400px;
  background: var(--primary-light);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation: floatC 30s ease-in-out infinite;
  animation-delay: -16s;
  opacity: 0.06;
}

@keyframes floatA {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(40px, -40px) scale(1.1); }
  50% { transform: translate(-20px, 20px) scale(0.95); }
  75% { transform: translate(30px, 30px) scale(1.05); }
}
@keyframes floatB {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(-30px, 30px) scale(1.08); }
  50% { transform: translate(20px, -30px) scale(0.92); }
  75% { transform: translate(-40px, -20px) scale(1.02); }
}
@keyframes floatC {
  0%, 100% { transform: translate(-50%, -50%) scale(1); }
  33% { transform: translate(-40%, -60%) scale(1.15); }
  66% { transform: translate(-60%, -40%) scale(0.9); }
}

/* ===== NAVIGATION ===== */
.nav {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  padding: var(--space-md) var(--space-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
  transition: background var(--transition-normal);
}

.nav-brand {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.5px;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.nav-brand span {
  color: var(--primary);
}

.nav-brand svg {
  width: 24px;
  height: 24px;
  stroke: var(--primary);
}

.nav-center {
  display: flex;
  gap: var(--space-lg);
}

.nav-links {
  display: flex;
  gap: var(--space-lg);
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition-fast);
  padding: var(--space-sm) 0;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--primary);
  transform: scaleX(0);
  transition: transform var(--transition-fast);
}

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

.nav-links a.active {
  color: var(--text-primary);
}

.nav-links a.active::after {
  transform: scaleX(1);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.theme-toggle {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-muted);
  transition: all var(--transition-fast);
  font-size: 1rem;
}
.theme-toggle:hover {
  background: rgba(255, 255, 255, 0.15);
  color: var(--text-primary);
}

/* ===== LAYOUT ===== */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--space-xl);
  animation: pageIn 0.4s ease;
}

@keyframes pageIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== GLASS PANEL ===== */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-lg);
  margin-bottom: var(--space-lg);
  transition: all var(--transition-normal);
}

.glass:hover {
  border-color: rgba(var(--primary-rgb), 0.15);
}

.glass-header {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}

/* ===== FORM ELEMENTS ===== */
select, input[type="number"], input[type="text"], input[type="range"] {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 0.65rem 1rem;
  color: var(--text-primary);
  font-size: 0.9rem;
  width: 100%;
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  appearance: none;
  -webkit-appearance: none;
  font-family: inherit;
}

select:hover, input:hover {
  border-color: rgba(var(--primary-rgb), 0.5);
}

select:focus, input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.15);
}

select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='rgba(255,255,255,0.5)' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  padding-right: 2.5rem;
}

select option {
  background: var(--bg-light);
  color: var(--text-primary);
}

input[type="range"] {
  padding: 0;
  border: none;
  background: none;
  height: 6px;
  accent-color: var(--primary);
}

.form-group {
  margin-bottom: var(--space-md);
}

.form-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 0.3rem;
}

.form-hint {
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-top: 0.25rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

/* ===== BUTTONS ===== */
.btn {
  padding: 0.7rem 1.5rem;
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  font-family: inherit;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  position: relative;
  overflow: hidden;
}

.btn:active {
  transform: scale(0.97);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  border: 1px solid var(--glass-border);
}

.btn-secondary:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid transparent;
}

.btn-ghost:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
}

.btn-sm {
  padding: 0.4rem 0.8rem;
  font-size: 0.8rem;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1rem;
}

.btn-group {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.btn-loading {
  pointer-events: none;
}

.btn-loading .btn-text {
  opacity: 0;
}

.btn-loading::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

.btn-approach {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 0.75rem 1.2rem;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 500;
  transition: all var(--transition-normal);
  font-family: inherit;
  flex: 1;
  min-width: 120px;
  text-align: center;
}

.btn-approach:hover {
  background: rgba(var(--primary-rgb), 0.15);
  border-color: var(--primary);
  color: var(--text-primary);
  transform: translateY(-2px);
}

.btn-approach.active {
  background: linear-gradient(135deg, rgba(var(--primary-rgb), 0.3), rgba(var(--secondary-rgb), 0.2));
  border-color: var(--primary);
  color: var(--text-primary);
  box-shadow: 0 4px 20px rgba(var(--primary-rgb), 0.2);
}

.btn-approach .icon {
  font-size: 1.5rem;
  display: block;
  margin-bottom: 0.3rem;
}

.btn-method {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 6px;
  padding: 0.4rem 0.8rem;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.8rem;
  transition: all var(--transition-fast);
  font-family: inherit;
}

.btn-method:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
}

.btn-method.active {
  background: rgba(var(--primary-rgb), 0.2);
  border-color: var(--primary);
  color: var(--text-primary);
}

/* ===== PROFILE CARD ===== */
.profile-card {
  display: flex;
  gap: var(--space-xl);
  align-items: center;
  flex-wrap: wrap;
}

.profile-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
  position: relative;
}

.profile-avatar::after {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  opacity: 0.3;
  z-index: -1;
  animation: pulse-ring 2s ease-in-out infinite;
}

@keyframes pulse-ring {
  0%, 100% { transform: scale(1); opacity: 0.3; }
  50% { transform: scale(1.08); opacity: 0.1; }
}

.profile-info {
  flex: 1;
}

.profile-name {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.profile-detail {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

.profile-tags {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

/* ===== TAGS ===== */
.tag {
  background: var(--tag-bg);
  border: 1px solid var(--tag-border);
  border-radius: var(--radius-sm);
  padding: 0.15rem 0.5rem;
  font-size: 0.75rem;
  color: var(--tag-text);
}

.tag-brand {
  background: var(--tag-brand-bg);
  border-color: var(--tag-brand-border);
  color: var(--tag-brand-text);
}

/* ===== GRID ===== */
.row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

@media (max-width: 768px) {
  .row {
    grid-template-columns: 1fr;
  }
}

/* ===== PRODUCT CARD ===== */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-md);
}

.product-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  transition: all var(--transition-normal);
  cursor: default;
  position: relative;
  overflow: hidden;
}

.product-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-normal);
}

.product-card:hover {
  transform: translateY(-4px);
  background: var(--card-hover-bg);
  border-color: var(--card-hover-border);
  box-shadow: var(--shadow-lg);
}

.product-card:hover::before {
  transform: scaleX(1);
}

.product-card .score-badge-top {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  border-radius: var(--radius-sm);
  padding: 0.15rem 0.5rem;
  font-size: 0.7rem;
  font-weight: 600;
}

.product-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(var(--primary-rgb), 0.2), rgba(var(--secondary-rgb), 0.1));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}

.product-name {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.3rem;
}

.product-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}

.product-price {
  font-size: 1rem;
  font-weight: 700;
  color: var(--primary);
}

.product-rating {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.85rem;
  color: var(--star);
}

.product-explanation {
  font-size: 0.78rem;
  color: var(--text-muted);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 0.6rem;
  margin-top: 0.6rem;
  font-style: italic;
  line-height: 1.4;
}

.compact-row {
  display: flex;
  gap: var(--space-md);
  align-items: center;
  flex-wrap: wrap;
}

/* ===== SCORE BADGE ===== */
.score-badge {
  display: inline-block;
  background: var(--tag-bg);
  border-radius: var(--radius-sm);
  padding: 0.1rem 0.4rem;
  font-size: 0.7rem;
  color: var(--tag-text);
}

/* ===== TABS ===== */
.tabs {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
}

.tab {
  padding: 0.6rem 1.2rem;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  font-family: inherit;
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.tab:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
}

.tab.active {
  background: rgba(var(--primary-rgb), 0.2);
  border-color: var(--primary);
  color: var(--text-primary);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== EVALUATION TABLE ===== */
.eval-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.eval-table th,
.eval-table td {
  padding: 0.6rem 0.8rem;
  text-align: left;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.eval-table th {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.eval-table td {
  color: var(--text-body);
}

.eval-table tr:hover td {
  background: rgba(255, 255, 255, 0.03);
}

.best-row {
  background: rgba(var(--primary-rgb), 0.08) !important;
}

.eval-table .metric-improved {
  color: var(--success);
}
.eval-table .metric-declined {
  color: var(--error);
}

/* ===== LOADING STATES ===== */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3rem;
  color: var(--text-muted);
  gap: 0.75rem;
}

.spinner {
  width: 24px;
  height: 24px;
  border: 3px solid rgba(255, 255, 255, 0.1);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.skeleton {
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.04) 25%,
    rgba(255, 255, 255, 0.08) 50%,
    rgba(255, 255, 255, 0.04) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
  border-radius: var(--radius-md);
}

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

.skeleton-card {
  height: 180px;
  padding: var(--space-md);
}

.skeleton-line {
  height: 12px;
  margin-bottom: 8px;
  width: 80%;
}
.skeleton-line:last-child {
  width: 60%;
}

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

/* ===== EMPTY STATE ===== */
.empty-state {
  text-align: center;
  padding: 3rem;
  color: var(--text-dim);
}

.empty-state .empty-icon {
  font-size: 3rem;
  margin-bottom: var(--space-md);
}

.empty-state .empty-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: var(--space-sm);
}

.empty-state .empty-desc {
  font-size: 0.85rem;
  color: var(--text-dim);
}

/* ===== CHART ===== */
.chart-container {
  position: relative;
  height: 300px;
  width: 100%;
}

.chart-container canvas {
  max-height: 100%;
  max-width: 100%;
}

/* ===== ANALYSIS BLOCK ===== */
.analysis-block {
  background: rgba(var(--primary-rgb), 0.06);
  border: 1px solid rgba(var(--primary-rgb), 0.15);
  border-radius: 10px;
  padding: 1rem;
  margin-top: var(--space-md);
}

.analysis-block h4 {
  color: var(--tag-text);
  margin-bottom: var(--space-sm);
  font-size: 0.9rem;
}

.analysis-block p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.analysis-block ul {
  list-style: none;
  padding: 0;
}
.analysis-block li {
  font-size: 0.85rem;
  color: var(--text-muted);
  padding: 0.25rem 0;
  line-height: 1.5;
}
.analysis-block li::before {
  content: '▸ ';
  color: var(--primary);
}

/* ===== COMPARE VIEW ===== */
.compare-view {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--space-md);
}

@media (max-width: 992px) {
  .compare-view {
    grid-template-columns: 1fr;
  }
}

.compare-column {
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  border: 1px solid var(--card-border);
  transition: all var(--transition-normal);
}

.compare-column:hover {
  border-color: rgba(var(--primary-rgb), 0.2);
}

.compare-column h3 {
  font-size: 0.9rem;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
  text-align: center;
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--card-border);
}

.compare-item {
  padding: 0.5rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  font-size: 0.8rem;
}
.compare-item:last-child {
  border-bottom: none;
}
.compare-item-name {
  font-weight: 500;
  color: var(--text-primary);
}
.compare-item-meta {
  color: var(--text-dim);
  margin-top: 0.15rem;
}

/* ===== BADGE ===== */
.badge-best {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
  font-size: 0.7rem;
  font-weight: 600;
  display: inline-block;
}

/* ===== TOAST NOTIFICATIONS ===== */
.toast-container {
  position: fixed;
  bottom: var(--space-xl);
  right: var(--space-xl);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  color: var(--text-primary);
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: var(--shadow-md);
  min-width: 280px;
  max-width: 400px;
  animation: toastIn 0.35s ease, toastOut 0.35s ease 3s forwards;
}

.toast-success {
  border-left: 3px solid var(--success);
}
.toast-error {
  border-left: 3px solid var(--error);
}
.toast-info {
  border-left: 3px solid var(--primary);
}
.toast-warning {
  border-left: 3px solid var(--warning);
}

.toast-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.toast-success .toast-icon { color: var(--success); }
.toast-error .toast-icon { color: var(--error); }
.toast-info .toast-icon { color: var(--primary); }
.toast-warning .toast-icon { color: var(--warning); }

.toast-close {
  margin-left: auto;
  background: none;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  padding: 0.15rem;
  font-size: 1rem;
  line-height: 1;
}

@keyframes toastIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}
@keyframes toastOut {
  from { opacity: 1; }
  to { opacity: 0; transform: translateY(-10px); }
}

/* ===== PREFERENCE EDITOR ===== */
.preference-slider {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: 0.5rem 0;
}
.preference-slider label {
  min-width: 120px;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.preference-slider input[type="range"] {
  flex: 1;
}
.preference-slider .slider-value {
  min-width: 40px;
  text-align: right;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
}

/* ===== FILTER CONTROLS ===== */
.filter-bar {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  align-items: end;
  margin-bottom: var(--space-md);
}

.filter-bar .form-group {
  margin-bottom: 0;
  min-width: 160px;
}

.filter-bar .form-group select,
.filter-bar .form-group input {
  width: auto;
  min-width: 140px;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .nav {
    padding: var(--space-md);
    flex-wrap: wrap;
    gap: var(--space-sm);
  }
  .nav-links {
    gap: var(--space-sm);
    font-size: 0.8rem;
  }
  .container {
    padding: var(--space-md);
  }
  .glass {
    padding: var(--space-md);
  }
  .form-row {
    grid-template-columns: 1fr;
  }
  .product-grid {
    grid-template-columns: 1fr;
  }
  .toast-container {
    bottom: var(--space-md);
    right: var(--space-md);
    left: var(--space-md);
  }
  .toast {
    min-width: 0;
    max-width: 100%;
  }
  .eval-table {
    font-size: 0.75rem;
  }
  .eval-table th,
  .eval-table td {
    padding: 0.4rem 0.5rem;
  }
  .nav-center {
    order: 3;
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 992px) {
  .profile-card {
    flex-direction: column;
    text-align: center;
  }
  .profile-tags {
    justify-content: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .ambient-blob { display: none; }
  html { scroll-behavior: auto; }
}

/* ===== CATEGORY ACCENT COLORS ===== */
:root {
  --cat-electronics: #3B82F6;
  --cat-clothing: #EC4899;
  --cat-home-kitchen: #F59E0B;
  --cat-books: #14B8A6;
  --cat-sports: #22C55E;
  --cat-beauty: #A855F7;
  --cat-toys: #F97316;
  --cat-automotive: #EF4444;
}

.product-card[data-category="Electronics"]::before { background: var(--cat-electronics); }
.product-card[data-category="Clothing"]::before { background: var(--cat-clothing); }
.product-card[data-category="Home & Kitchen"]::before { background: var(--cat-home-kitchen); }
.product-card[data-category="Books"]::before { background: var(--cat-books); }
.product-card[data-category="Sports"]::before { background: var(--cat-sports); }
.product-card[data-category="Beauty"]::before { background: var(--cat-beauty); }
.product-card[data-category="Toys"]::before { background: var(--cat-toys); }
.product-card[data-category="Automotive"]::before { background: var(--cat-automotive); }

.product-card[data-category="Electronics"]:hover { border-color: rgba(59, 130, 246, 0.3); }
.product-card[data-category="Clothing"]:hover { border-color: rgba(236, 72, 153, 0.3); }
.product-card[data-category="Home & Kitchen"]:hover { border-color: rgba(245, 158, 11, 0.3); }
.product-card[data-category="Books"]:hover { border-color: rgba(20, 184, 166, 0.3); }
.product-card[data-category="Sports"]:hover { border-color: rgba(34, 197, 94, 0.3); }
.product-card[data-category="Beauty"]:hover { border-color: rgba(168, 85, 247, 0.3); }
.product-card[data-category="Toys"]:hover { border-color: rgba(249, 115, 22, 0.3); }
.product-card[data-category="Automotive"]:hover { border-color: rgba(239, 68, 68, 0.3); }

/* ===== RELEVANCE PROGRESS BAR ===== */
.product-score-bar {
  height: 3px;
  border-radius: 2px;
  margin-top: 0.5rem;
  background: rgba(255, 255, 255, 0.06);
  overflow: hidden;
}
.product-score-bar-fill {
  height: 100%;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  transition: width 0.6s ease;
}

/* ===== STAGGERED CARD ENTRY ===== */
.product-card.stagger {
  animation: cardIn 0.4s ease backwards;
}
@keyframes cardIn {
  from { opacity: 0; transform: translateY(15px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

/* ===== TOOLTIP ===== */
.tooltip-trigger {
  position: relative;
  cursor: help;
  border-bottom: 1px dashed var(--text-dim);
}
.tooltip-trigger .tooltip-content {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  background: var(--bg-light);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 0.5rem 0.75rem;
  font-size: 0.75rem;
  color: var(--text-body);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition-fast);
  z-index: 50;
  box-shadow: var(--shadow-md);
  line-height: 1.4;
  font-style: normal;
  font-weight: 400;
}
.tooltip-trigger:hover .tooltip-content {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}
.tooltip-trigger .tooltip-content::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-top-color: var(--glass-border);
}

/* ===== BREADCRUMB ===== */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-bottom: var(--space-md);
  padding: 0;
  list-style: none;
}
.breadcrumb li { display: flex; align-items: center; gap: 0.4rem; }
.breadcrumb a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: var(--text-dim); }
.breadcrumb .current { color: var(--text-primary); font-weight: 500; }

/* ===== KPI METRIC CARDS ===== */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}
.kpi-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  text-align: center;
  transition: all var(--transition-normal);
}
.kpi-card:hover {
  border-color: var(--card-hover-border);
  transform: translateY(-2px);
}
.kpi-card .kpi-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-dim);
  margin-bottom: 0.3rem;
}
.kpi-card .kpi-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}
.kpi-card .kpi-unit {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}
.kpi-card.kpi-primary .kpi-value { color: var(--primary); }
.kpi-card.kpi-secondary .kpi-value { color: var(--secondary); }
.kpi-card.kpi-success .kpi-value { color: var(--success); }
.kpi-card.kpi-warning .kpi-value { color: var(--warning); }

/* ===== COMPARE VIEW SYNCED SCROLL ===== */
.compare-view.synced-scroll .compare-column {
  overflow-y: auto;
  max-height: 500px;
}

/* ===== KEYBOARD SHORTCUT HINT ===== */
.kbd-hint {
  position: fixed;
  bottom: var(--space-md);
  left: 50%;
  transform: translateX(-50%);
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 0.4rem 1rem;
  font-size: 0.7rem;
  color: var(--text-dim);
  z-index: 50;
  white-space: nowrap;
  opacity: 0;
  transition: opacity var(--transition-slow);
  pointer-events: none;
}
.kbd-hint.visible { opacity: 1; }
.kbd-hint kbd {
  display: inline-block;
  background: rgba(255,255,255,0.1);
  border-radius: 3px;
  padding: 0 0.3rem;
  font-family: inherit;
  font-size: 0.65rem;
  border: 1px solid var(--glass-border);
  margin: 0 0.1rem;
}

[x-cloak] { display: none !important; }

/* ===== UTILITIES ===== */
.hidden {
  display: none !important;
}

.mt-1 { margin-top: var(--space-sm); }
.mt-2 { margin-top: var(--space-md); }
.mt-3 { margin-top: var(--space-lg); }
.mb-1 { margin-bottom: var(--space-sm); }
.mb-2 { margin-bottom: var(--space-md); }
.mb-3 { margin-bottom: var(--space-lg); }

.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.text-dim { color: var(--text-dim); }

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }

.w-full { width: 100%; }