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

:root {
  --bg-primary: #0d0d1a;
  --bg-secondary: #12121f;
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-card-hover: rgba(255, 255, 255, 0.07);
  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.18);

  --accent-purple: #7c3aed;
  --accent-purple-light: #a855f7;
  --accent-teal: #06b6d4;
  --accent-teal-light: #22d3ee;
  --accent-gold: #f59e0b;
  --accent-green: #10b981;
  --accent-red: #ef4444;

  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --gradient-primary: linear-gradient(135deg, #7c3aed 0%, #06b6d4 100%);
  --gradient-card-add: linear-gradient(135deg, rgba(124, 58, 237, 0.15) 0%, rgba(168, 85, 247, 0.05) 100%);
  --gradient-card-query: linear-gradient(135deg, rgba(6, 182, 212, 0.15) 0%, rgba(34, 211, 238, 0.05) 100%);
  --gradient-card-list: linear-gradient(135deg, rgba(16, 185, 129, 0.15) 0%, rgba(52, 211, 153, 0.05) 100%);
  --gradient-card-settings: linear-gradient(135deg, rgba(245, 158, 11, 0.15) 0%, rgba(251, 191, 36, 0.05) 100%);

  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
  --shadow: 0 8px 32px rgba(0,0,0,0.4);
  --shadow-lg: 0 20px 60px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 40px rgba(124, 58, 237, 0.25);

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

  --header-height: 68px;
}

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

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 800px 600px at 20% 20%, rgba(124, 58, 237, 0.08) 0%, transparent 70%),
    radial-gradient(ellipse 600px 400px at 80% 80%, rgba(6, 182, 212, 0.06) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; }
a { color: inherit; text-decoration: none; }
img, video { max-width: 100%; }

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-secondary); }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.15); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.25); }

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

.container--narrow {
  max-width: 720px;
}

.main-content {
  padding: calc(var(--header-height) + 32px) 0 64px;
  min-height: 100vh;
}

.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-height);
  background: rgba(13, 13, 26, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 100%;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  flex-shrink: 0;
  transition: opacity var(--transition-fast);
}
.header-logo:hover { opacity: 0.85; }
.logo-emoji { font-size: 1.4rem; }
.logo-text { background: var(--gradient-primary); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

.header-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  font-size: .875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  white-space: nowrap;
}
.nav-link:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}
.nav-link.active {
  background: rgba(124, 58, 237, 0.15);
  color: var(--accent-purple-light);
  border: 1px solid rgba(124, 58, 237, 0.3);
}
.nav-icon { font-size: 1rem; }

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: auto;
  flex-shrink: 0;
}

.user-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 99px;
  font-size: .85rem;
  color: var(--text-secondary);
}

.btn-logout {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px; height: 38px;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.2);
  border-radius: var(--radius-sm);
  color: #f87171;
  transition: all var(--transition-fast);
  cursor: pointer;
}
.btn-logout:hover {
  background: rgba(239, 68, 68, 0.2);
  border-color: rgba(239, 68, 68, 0.4);
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  margin-left: auto;
}
.mobile-menu-btn span {
  display: block;
  width: 22px; height: 2px;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

.mobile-nav {
  display: none;
  position: absolute;
  top: var(--header-height);
  left: 0; right: 0;
  background: rgba(13, 13, 26, 0.97);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(20px);
  padding: 16px 24px;
  flex-direction: column;
  gap: 4px;
}
.mobile-nav.open { display: flex; }
.mobile-nav-link {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: .9rem;
  transition: all var(--transition-fast);
}
.mobile-nav-link:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}
.mobile-nav-logout { color: #f87171; }

.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 20px;
}

.login-bg {
  position: fixed;
  inset: 0;
  overflow: hidden;
  z-index: 0;
  pointer-events: none;
}

.bg-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
  animation: float 8s ease-in-out infinite;
}
.orb-1 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(124, 58, 237, 0.5), transparent);
  top: -100px; left: -100px;
  animation-delay: 0s;
}
.orb-2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.4), transparent);
  bottom: -100px; right: -50px;
  animation-delay: 3s;
}
.orb-3 {
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.3), transparent);
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  animation-delay: 5s;
}

@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-30px) scale(1.05); }
}

.login-wrapper {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 440px;
}

.login-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  padding: 48px 40px;
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  animation: slideUp 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

.login-logo {
  position: relative;
  display: flex;
  justify-content: center;
  margin-bottom: 16px;
}
.logo-icon {
  font-size: 3.5rem;
  display: block;
  animation: pulse 3s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.08); }
}
.logo-glow {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 80px; height: 80px;
  background: var(--accent-purple);
  border-radius: 50%;
  filter: blur(30px);
  opacity: 0.4;
  animation: glow 3s ease-in-out infinite;
}
@keyframes glow {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 0.6; }
}

.login-title {
  text-align: center;
  font-size: 1.8rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 6px;
}

.login-subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: .9rem;
  margin-bottom: 32px;
}

.login-form { display: flex; flex-direction: column; gap: 20px; }

.login-footer {
  text-align: center;
  margin-top: 24px;
  color: var(--text-muted);
  font-size: .8rem;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
  overflow: hidden;
}

.card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}
.card-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  flex: 1;
}
.card-subtitle { font-size: .85rem; }
.card-body { padding: 24px; }

.dashboard-hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.12) 0%, rgba(6, 182, 212, 0.08) 100%);
  border: 1px solid rgba(124, 58, 237, 0.2);
  border-radius: var(--radius-xl);
  padding: 36px 40px;
  margin-bottom: 32px;
}
.hero-text { flex: 1; }
.hero-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px 32px;
  text-align: center;
}
.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}
.stat-label { color: var(--text-secondary); font-size: .85rem; margin-top: 6px; }

.menu-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-bottom: 32px;
}

.menu-card {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 28px 24px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  transition: all var(--transition);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.menu-card::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity var(--transition);
}

.menu-card--add {
  background: var(--gradient-card-add);
  border-color: rgba(124, 58, 237, 0.2);
}
.menu-card--add::before { background: var(--gradient-card-add); }
.menu-card--add:hover { border-color: rgba(124, 58, 237, 0.5); transform: translateY(-4px); box-shadow: 0 16px 40px rgba(124, 58, 237, 0.2); }

.menu-card--query {
  background: var(--gradient-card-query);
  border-color: rgba(6, 182, 212, 0.2);
}
.menu-card--query:hover { border-color: rgba(6, 182, 212, 0.5); transform: translateY(-4px); box-shadow: 0 16px 40px rgba(6, 182, 212, 0.2); }

.menu-card--list {
  background: var(--gradient-card-list);
  border-color: rgba(16, 185, 129, 0.2);
}
.menu-card--list:hover { border-color: rgba(16, 185, 129, 0.5); transform: translateY(-4px); box-shadow: 0 16px 40px rgba(16, 185, 129, 0.2); }

.menu-card--settings {
  background: var(--gradient-card-settings);
  border-color: rgba(245, 158, 11, 0.2);
}
.menu-card--settings:hover { border-color: rgba(245, 158, 11, 0.5); transform: translateY(-4px); box-shadow: 0 16px 40px rgba(245, 158, 11, 0.2); }

.menu-card-icon { font-size: 2.2rem; flex-shrink: 0; }
.menu-card-content { flex: 1; }
.menu-card-title { font-size: 1.05rem; font-weight: 700; margin-bottom: 6px; }
.menu-card-desc { color: var(--text-secondary); font-size: .85rem; line-height: 1.5; }
.menu-card-arrow { color: var(--text-muted); font-size: 1.2rem; flex-shrink: 0; transition: transform var(--transition-fast); }
.menu-card:hover .menu-card-arrow { transform: translateX(4px); color: var(--text-secondary); }

.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 28px;
}
.page-header-actions { display: flex; gap: 10px; align-items: center; }
.page-title { font-size: 1.75rem; font-weight: 800; margin-bottom: 6px; }
.page-subtitle { color: var(--text-secondary); font-size: .9rem; }

.form-group { display: flex; flex-direction: column; gap: 8px; }
.form-label { font-size: .875rem; font-weight: 500; color: var(--text-secondary); }
.required-star { color: var(--accent-red); }
.form-hint { font-size: .8rem; color: var(--text-muted); margin-top: 4px; }

.form-input, .form-textarea, .form-select {
  width: 100%;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 11px 16px;
  color: var(--text-primary);
  font-family: inherit;
  font-size: .9rem;
  transition: all var(--transition-fast);
  outline: none;
  -webkit-appearance: none;
}

.form-input:focus, .form-textarea:focus {
  border-color: var(--accent-purple);
  background: rgba(124, 58, 237, 0.06);
  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.12);
}
.form-input::placeholder, .form-textarea::placeholder { color: var(--text-muted); }
.form-textarea { resize: vertical; min-height: 90px; }

.input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}
.input-wrapper .form-input { padding-left: 42px; }
.input-icon {
  position: absolute;
  left: 14px;
  color: var(--text-muted);
  font-size: .9rem;
  pointer-events: none;
  z-index: 1;
}
.toggle-password {
  position: absolute;
  right: 12px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  padding: 4px;
  transition: color var(--transition-fast);
  display: flex;
  align-items: center;
}
.toggle-password:hover { color: var(--text-secondary); }

.form-grid { display: grid; gap: 20px; }
.form-grid-2 { grid-template-columns: repeat(2, 1fr); }
.form-grid-3 { grid-template-columns: repeat(3, 1fr); }

.form-divider {
  display: flex;
  align-items: center;
  gap: 16px;
  color: var(--text-muted);
  font-size: .8rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  font-weight: 600;
  margin: 8px 0;
}
.form-divider::before, .form-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  padding-top: 8px;
}

.flex-1 { flex: 1; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: .9rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition-fast);
  white-space: nowrap;
  text-decoration: none;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 4px 16px rgba(124, 58, 237, 0.3);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(124, 58, 237, 0.45); }
.btn-primary:active { transform: translateY(0); }

.btn-secondary {
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid var(--border);
  color: var(--text-primary);
}
.btn-secondary:hover { background: rgba(255, 255, 255, 0.12); border-color: var(--border-hover); }

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

.btn-danger {
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #f87171;
}
.btn-danger:hover { background: rgba(239, 68, 68, 0.25); border-color: rgba(239, 68, 68, 0.6); }

.btn-full { width: 100%; }

.btn-sm {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 5px 12px;
  border-radius: 6px;
  font-size: .8rem;
  font-weight: 600;
  background: rgba(124, 58, 237, 0.12);
  border: 1px solid rgba(124, 58, 237, 0.25);
  color: var(--accent-purple-light);
  transition: all var(--transition-fast);
  text-decoration: none;
}
.btn-sm:hover { background: rgba(124, 58, 237, 0.25); }
.btn-sm--secondary {
  background: rgba(6, 182, 212, 0.1);
  border-color: rgba(6, 182, 212, 0.2);
  color: var(--accent-teal-light);
}
.btn-sm--secondary:hover { background: rgba(6, 182, 212, 0.2); }

.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 99px;
  font-size: .75rem;
  font-weight: 600;
}
.badge-required {
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.25);
  color: #f87171;
}
.badge-optional {
  background: rgba(100, 116, 139, 0.12);
  border: 1px solid rgba(100, 116, 139, 0.25);
  color: var(--text-muted);
}

.serial-badge {
  display: inline-block;
  padding: 3px 10px;
  background: rgba(124, 58, 237, 0.12);
  border: 1px solid rgba(124, 58, 237, 0.3);
  border-radius: 6px;
  color: var(--accent-purple-light);
  font-family: 'Courier New', monospace;
  font-size: .85rem;
  font-weight: 700;
  letter-spacing: 1px;
}
.serial-badge--lg { font-size: 1.2rem; padding: 6px 16px; letter-spacing: 2px; }

.alert {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  font-size: .9rem;
  line-height: 1.5;
}
.alert-icon { flex-shrink: 0; }
.alert-list { margin-left: 20px; margin-top: 6px; }
.alert-list li { margin-bottom: 4px; }

.alert-success {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.25);
  color: #34d399;
}
.alert-error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.25);
  color: #f87171;
}
.alert-info {
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid rgba(6, 182, 212, 0.25);
  color: var(--accent-teal-light);
}
.alert-warning {
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.25);
  color: #fbbf24;
}

.table-wrapper { overflow-x: auto; }

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .875rem;
}

.data-table th {
  padding: 12px 16px;
  text-align: left;
  font-size: .75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.data-table td {
  padding: 14px 16px;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  color: var(--text-secondary);
  vertical-align: middle;
}

.table-row-hover { transition: background var(--transition-fast); }
.table-row-hover:hover { background: var(--bg-card-hover); }
.table-row-hover:last-child td { border-bottom: none; }

.action-btns { display: flex; gap: 6px; }

.serial-link { text-decoration: none; }
.serial-link:hover .serial-badge { background: rgba(124, 58, 237, 0.25); }

.price-value { color: var(--accent-gold); }

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 20px;
  border-top: 1px solid var(--border);
}

.page-btn {
  display: inline-flex;
  align-items: center;
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  font-size: .875rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  transition: all var(--transition-fast);
  text-decoration: none;
}
.page-btn:hover { background: var(--bg-card-hover); color: var(--text-primary); }
.page-btn--active {
  background: var(--accent-purple);
  color: white;
  border-color: var(--accent-purple);
}

.serial-input-group {
  display: flex;
  gap: 12px;
  align-items: flex-end;
}

.serial-input-group .form-group {
  flex: 1;
}

.serial-btn {
  height: 44px;
  flex-shrink: 0;
  align-self: flex-end;
  margin-bottom: 0;
}

.serial-preview {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: rgba(124, 58, 237, 0.06);
  border: 1px solid rgba(124, 58, 237, 0.2);
  border-radius: var(--radius-sm);
  margin-top: 12px;
}
.serial-preview-label { color: var(--text-muted); font-size: .85rem; }
.serial-preview-value {
  font-family: monospace;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent-purple-light);
  letter-spacing: 3px;
}

.upload-area {
  position: relative;
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 32px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  background: rgba(255,255,255,0.02);
}
.upload-area:hover, .upload-area.drag-over {
  border-color: var(--accent-purple);
  background: rgba(124, 58, 237, 0.06);
}
.upload-input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  width: 100%;
  height: 100%;
}
.upload-icon { font-size: 2.5rem; display: block; margin-bottom: 12px; }
.upload-text { color: var(--text-secondary); font-size: .95rem; font-weight: 500; margin-bottom: 6px; }
.upload-hint { color: var(--text-muted); font-size: .8rem; }

.upload-preview {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}
.preview-item {
  position: relative;
  width: 100px; height: 100px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
}
.preview-item img, .preview-item video {
  width: 100%; height: 100%;
  object-fit: cover;
}
.preview-remove {
  position: absolute;
  top: 4px; right: 4px;
  width: 22px; height: 22px;
  background: rgba(0,0,0,0.7);
  border: none;
  border-radius: 50%;
  color: white;
  font-size: .7rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}
.preview-video-tag {
  position: absolute;
  bottom: 4px; left: 4px;
  background: rgba(0,0,0,0.7);
  color: white;
  font-size: .65rem;
  padding: 2px 5px;
  border-radius: 4px;
}

.product-card-detail {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.product-detail-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
}

.detail-section {
  padding: 28px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.detail-section:last-child { border-right: none; }

.detail-section-title {
  font-size: .95rem;
  font-weight: 700;
  color: var(--text-secondary);
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.detail-rows { display: flex; flex-direction: column; gap: 14px; }

.detail-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  font-size: .875rem;
}

.detail-label {
  color: var(--text-muted);
  flex-shrink: 0;
  min-width: 110px;
  font-weight: 500;
}

.detail-value {
  color: var(--text-primary);
  text-align: right;
  word-break: break-word;
}

.detail-notes {
  padding: 24px 28px;
  border-bottom: 1px solid var(--border);
}
.notes-text {
  color: var(--text-secondary);
  font-size: .9rem;
  line-height: 1.7;
  background: rgba(255,255,255,0.03);
  padding: 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

.detail-media { padding: 28px; }

.media-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.media-item {
  position: relative;
  aspect-ratio: 1;
  border-radius: var(--radius-sm);
  overflow: hidden;
  cursor: pointer;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  transition: all var(--transition-fast);
}
.media-item:hover { border-color: var(--accent-purple); transform: scale(1.02); box-shadow: 0 8px 20px rgba(0,0,0,0.3); }

.media-thumb {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
}

.media-play-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.45);
  color: white;
  font-size: 2rem;
}

.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.92);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}
.lightbox.open { display: flex; }

.lightbox-content {
  max-width: 90vw;
  max-height: 85vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.lightbox-content img, .lightbox-content video {
  max-width: 100%;
  max-height: 85vh;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
}

.lightbox-close {
  position: fixed;
  top: 20px; right: 20px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 50%;
  width: 44px; height: 44px;
  color: white;
  font-size: 1rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}
.lightbox-close:hover { background: rgba(255,255,255,0.2); }

.lightbox-prev, .lightbox-next {
  position: fixed;
  top: 50%; transform: translateY(-50%);
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-sm);
  width: 44px; height: 60px;
  color: white;
  font-size: 1.5rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}
.lightbox-prev { left: 16px; }
.lightbox-next { right: 16px; }
.lightbox-prev:hover, .lightbox-next:hover { background: rgba(255,255,255,0.2); }

.query-search-group {
  display: flex;
  gap: 12px;
  align-items: flex-end;
}
.query-btn { padding: 12px 28px; }

.result-found-banner {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.25);
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
  font-size: .9rem;
  color: #34d399;
}

.query-hint-box {
  display: flex;
  gap: 20px;
  padding: 24px;
  background: rgba(6, 182, 212, 0.06);
  border: 1px solid rgba(6, 182, 212, 0.15);
  border-radius: var(--radius);
  font-size: .9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}
.query-hint-icon { font-size: 2rem; flex-shrink: 0; }

.code-inline {
  background: rgba(255,255,255,0.08);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 6px;
  font-family: monospace;
  font-size: .9em;
  color: var(--accent-purple-light);
}

.search-bar {
  display: flex;
  gap: 12px;
  align-items: flex-end;
}

.search-clear {
  position: absolute;
  right: 12px;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: .9rem;
  padding: 4px;
  transition: color var(--transition-fast);
}
.search-clear:hover { color: var(--text-primary); }

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
  text-align: center;
}
.empty-icon { font-size: 4rem; margin-bottom: 20px; opacity: 0.7; }
.empty-title { font-size: 1.4rem; font-weight: 700; margin-bottom: 10px; }
.empty-desc { color: var(--text-secondary); font-size: .95rem; max-width: 400px; line-height: 1.6; }

.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  z-index: 200;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
}
.modal-overlay.open { display: flex; }

.modal {
  background: #1a1a2e;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 40px;
  max-width: 440px;
  width: 90%;
  text-align: center;
  box-shadow: var(--shadow-lg);
  animation: slideUp 0.25s ease;
}
.modal-icon { font-size: 3rem; margin-bottom: 16px; }
.modal-title { font-size: 1.3rem; font-weight: 700; margin-bottom: 12px; }
.modal-desc { color: var(--text-secondary); font-size: .9rem; line-height: 1.6; margin-bottom: 28px; }
.modal-actions { display: flex; justify-content: center; gap: 12px; }

.edit-media-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.edit-media-item {
  position: relative;
  width: 120px; height: 120px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border);
}

.edit-media-thumb {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
}

.edit-media-delete {
  position: absolute;
  inset: 0;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}
.edit-media-delete input { display: none; }
.delete-overlay {
  position: absolute;
  inset: 0;
  background: rgba(239, 68, 68, 0.0);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: .8rem;
  font-weight: 600;
  transition: all var(--transition-fast);
  opacity: 0;
}
.edit-media-delete input:checked + .delete-overlay {
  opacity: 1;
  background: rgba(239, 68, 68, 0.7);
}
.edit-media-delete:hover .delete-overlay { opacity: 0.7; background: rgba(239, 68, 68, 0.5); }

.link { color: var(--accent-purple-light); transition: color var(--transition-fast); }
.link:hover { color: var(--text-primary); }
.link-phone, .link-email { color: var(--accent-teal-light); }
.link-phone:hover, .link-email:hover { text-decoration: underline; }
.link-muted { color: var(--text-muted); font-size: .85rem; }
.link-muted:hover { color: var(--text-secondary); }

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

.mt-16 { margin-top: 16px; }
.mt-32 { margin-top: 32px; }
.mb-24 { margin-bottom: 24px; }
.mb-32 { margin-bottom: 32px; }
.ml-8 { margin-left: 8px; }
.ml-auto { margin-left: auto; }

.password-strength {
  margin-top: 6px;
  font-size: .8rem;
  padding: 6px 10px;
  border-radius: 6px;
}
.strength-weak { background: rgba(239,68,68,0.1); color: #f87171; }
.strength-medium { background: rgba(245,158,11,0.1); color: #fbbf24; }
.strength-strong { background: rgba(16,185,129,0.1); color: #34d399; }

.print-section { margin-top: 20px; text-align: center; }
@media print {
  .site-header, .page-header-actions, .print-section, .btn { display: none !important; }
  body { background: white; color: black; }
  .product-card-detail { border: 1px solid #ddd; }
}

@media (max-width: 1024px) {
  .menu-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root { --header-height: 64px; }

  .header-nav, .header-actions { display: none; }
  .mobile-menu-btn { display: flex; }

  .main-content { padding-top: calc(var(--header-height) + 20px); padding-bottom: 40px; }
  .container { padding: 0 16px; }

  .menu-grid { grid-template-columns: 1fr; gap: 14px; }
  .menu-card { padding: 20px; }
  .menu-card-icon { font-size: 1.8rem; }

  .dashboard-hero {
    flex-direction: column;
    gap: 20px;
    padding: 24px;
  }
  .hero-stat { width: 100%; }

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

  .serial-input-group { flex-direction: column; }
  .serial-input-group .serial-btn { width: 100%; height: auto; }

  .query-search-group { flex-direction: column; }
  .query-btn { width: 100%; }

  .search-bar { flex-direction: column; }
  .search-bar .btn { width: 100%; }

  .product-detail-grid { grid-template-columns: 1fr; }
  .detail-section { border-right: none; }

  .page-header { flex-direction: column; gap: 12px; }
  .page-header-actions { flex-wrap: wrap; }

  .login-card { padding: 32px 24px; }

  .form-actions { flex-direction: column; }
  .form-actions .btn { width: 100%; }

  .media-gallery { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 480px) {
  .media-gallery { grid-template-columns: repeat(2, 1fr); }
  .data-table { font-size: .8rem; }
  .data-table th, .data-table td { padding: 10px 10px; }
}