/* ========================================
   三角洲行动账号租赁 - 全局样式
   明亮简洁主题
   ======================================== */

:root {
  /* 主色调 - 清新蓝 */
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #3b82f6;
  --accent: #f97316;
  --accent-dark: #ea580c;

  /* 背景色系 - 明亮 */
  --bg-dark: #f1f5f9;
  --bg-card: #ffffff;
  --bg-card-hover: #f8fafc;
  --bg-section: #f8fafc;
  --bg-input: #f8fafc;

  /* 文字色系 */
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  --text-highlight: #2563eb;

  /* 边框 */
  --border: #e2e8f0;
  --border-light: #cbd5e1;

  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.08);
  --shadow-glow: 0 4px 16px rgba(37,99,235,0.12);

  /* 圆角 */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;

  /* 间距 */
  --gap-xs: 4px;
  --gap-sm: 8px;
  --gap-md: 16px;
  --gap-lg: 24px;
  --gap-xl: 32px;
  --gap-2xl: 48px;

  /* 字体 */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "SF Mono", "Cascadia Code", "Consolas", monospace;

  /* 导航栏高度 */
  --nav-height: 64px;
  --nav-height-mobile: 56px;

  /* 过渡 */
  --transition: 0.2s ease;
  --transition-slow: 0.3s ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover { color: var(--primary-dark); }

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

button {
  cursor: pointer;
  font-family: inherit;
  border: none;
  outline: none;
}

input, select, textarea {
  font-family: inherit;
  outline: none;
}

ul, ol { list-style: none; }

/* ========== Scrollbar ========== */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-section); }
::-webkit-scrollbar-thumb {
  background: var(--border-light);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ========== Navigation ========== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  display: flex;
  align-items: center;
  padding: 0 var(--gap-xl);
  transition: all var(--transition);
}

.nav-inner {
  max-width: 1280px;
  width: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--gap-sm);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.nav-logo .logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: #fff;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--gap-xs);
}

.nav-links a {
  color: var(--text-secondary);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition);
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--primary);
  background: rgba(37, 99, 235, 0.06);
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--primary);
  border-radius: 1px;
}

/* Mobile menu button */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  padding: 4px;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 1px;
  transition: all var(--transition);
}

/* ========== Container ========== */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--gap-xl);
}

.page-content {
  padding-top: calc(var(--nav-height) + var(--gap-xl));
  padding-bottom: var(--gap-2xl);
  min-height: calc(100vh - 200px);
}

/* ========== Home Hero ========== */
.hero {
  position: relative;
  padding: calc(var(--nav-height) + 60px) var(--gap-xl) 80px;
  text-align: center;
  background: linear-gradient(180deg, rgba(37,99,235,0.04) 0%, transparent 60%),
              radial-gradient(ellipse at 50% 0%, rgba(37,99,235,0.06) 0%, transparent 60%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background:
    radial-gradient(circle at 30% 20%, rgba(37,99,235,0.04) 0%, transparent 50%),
    radial-gradient(circle at 70% 30%, rgba(249,115,22,0.03) 0%, transparent 50%);
  animation: heroPulse 8s ease-in-out infinite;
}

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

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(37,99,235,0.08);
  border: 1px solid rgba(37,99,235,0.15);
  color: var(--primary);
  padding: 6px 16px;
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: var(--gap-lg);
}

.hero h1 {
  font-size: 2.75rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: var(--gap-md);
  letter-spacing: -1px;
  color: var(--text-primary);
}

.hero h1 .highlight {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: var(--gap-xl);
  line-height: 1.7;
  max-width: 540px;
  margin-left: auto;
  margin-right: auto;
}

.hero-actions {
  display: flex;
  gap: var(--gap-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 600;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 2px 8px rgba(37,99,235,0.2);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 14px rgba(37,99,235,0.3);
  color: #fff;
}

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--border-light);
  color: var(--text-primary);
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(37,99,235,0.04);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.85rem;
  border-radius: var(--radius-sm);
}

.btn-accent {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 2px 8px rgba(249,115,22,0.2);
}

.btn-accent:hover {
  background: var(--accent-dark);
  transform: translateY(-1px);
  color: #fff;
}

/* ========== Section Headers ========== */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--gap-lg);
  flex-wrap: wrap;
  gap: var(--gap-md);
}

.section-title {
  font-size: 1.4rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: var(--gap-sm);
  color: var(--text-primary);
}

.section-title::before {
  content: '';
  width: 4px;
  height: 22px;
  background: var(--primary);
  border-radius: 2px;
}

/* ========== Product Cards ========== */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--gap-lg);
}

.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-slow);
  cursor: pointer;
  position: relative;
  box-shadow: var(--shadow-sm);
}

.product-card:hover {
  border-color: var(--primary-light);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow), var(--shadow-lg);
}

.card-image {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--bg-section);
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.product-card:hover .card-image img {
  transform: scale(1.05);
}

.card-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(8px);
  color: var(--primary);
  padding: 4px 10px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  box-shadow: var(--shadow-sm);
}

.card-featured-tag {
  position: absolute;
  top: 12px;
  right: 12px;
  background: linear-gradient(135deg, var(--accent), #fb923c);
  color: #fff;
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  box-shadow: 0 2px 8px rgba(249,115,22,0.3);
}

.card-body {
  padding: var(--gap-md);
}

.card-header-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: var(--gap-sm);
}

.card-id {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.card-rank {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 4px;
  background: rgba(37,99,235,0.08);
  color: var(--primary);
}

.card-price {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: var(--gap-xs);
}

.card-price .unit {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-left: 2px;
}

.card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gap-sm);
  margin-bottom: var(--gap-md);
}

.meta-tag {
  font-size: 0.75rem;
  padding: 3px 10px;
  border-radius: 100px;
  background: var(--bg-section);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.meta-tag.coins {
  color: var(--primary);
  background: rgba(37,99,235,0.06);
  border-color: rgba(37,99,235,0.12);
}

.meta-tag.server {
  color: #0d9488;
  background: rgba(13,148,136,0.06);
  border-color: rgba(13,148,136,0.12);
}

.card-attributes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gap-xs);
  padding-top: var(--gap-md);
  border-top: 1px solid var(--border);
}

.attr-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.attr-item .attr-label {
  color: var(--text-muted);
  min-width: 48px;
}

.attr-item .attr-value {
  color: var(--text-primary);
  font-weight: 500;
}

/* ========== Search Bar (Homepage) ========== */
.search-hero {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--gap-lg);
  max-width: 600px;
  margin: 0 auto;
  box-shadow: var(--shadow-sm);
}

.search-hero form {
  display: flex;
  gap: var(--gap-sm);
}

.search-hero input {
  flex: 1;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: border-color var(--transition);
}

.search-hero input:focus {
  border-color: var(--primary);
}

.search-hero input::placeholder {
  color: var(--text-muted);
}

.search-hero button {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 12px 24px;
  background: var(--primary);
  border: none;
  border-radius: var(--radius-md);
  color: #fff;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition);
}

.search-hero button:hover {
  background: var(--primary-dark);
}

/* ========== Stats Row ========== */
.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--gap-md);
  margin: var(--gap-2xl) 0;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--gap-lg);
  text-align: center;
  transition: all var(--transition);
  box-shadow: var(--shadow-sm);
}

.stat-card:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-md);
}

.stat-card .stat-number {
  font-size: 1.8rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-card .stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ========== List Page Filters ========== */
.filter-bar {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--gap-lg);
  margin-bottom: var(--gap-lg);
  box-shadow: var(--shadow-sm);
}

.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gap-md);
  align-items: flex-end;
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: var(--gap-xs);
  flex: 1;
  min-width: 140px;
}

.filter-group label {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 500;
}

.filter-group select,
.filter-group input {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  color: var(--text-primary);
  font-size: 0.9rem;
  transition: border-color var(--transition);
}

.filter-group select:focus,
.filter-group input:focus {
  border-color: var(--primary);
}

.filter-group select option {
  background: var(--bg-card);
  color: var(--text-primary);
}

.filter-actions {
  display: flex;
  gap: var(--gap-sm);
  align-items: flex-end;
}

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

.sort-info .result-count {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.sort-info .result-count strong {
  color: var(--text-primary);
}

/* ========== Search Page ========== */
.search-page {
  max-width: 900px;
  margin: 0 auto;
}

.search-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--gap-xl);
  margin-bottom: var(--gap-xl);
  box-shadow: var(--shadow-sm);
}

.search-box h2 {
  font-size: 1.3rem;
  margin-bottom: var(--gap-lg);
  display: flex;
  align-items: center;
  gap: var(--gap-sm);
  color: var(--text-primary);
}

.search-main {
  display: flex;
  gap: var(--gap-sm);
  margin-bottom: var(--gap-lg);
}

.search-main input {
  flex: 1;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  color: var(--text-primary);
  font-size: 1rem;
}

.search-main input:focus {
  border-color: var(--primary);
}

.search-main button {
  padding: 14px 28px;
  background: var(--primary);
  border: none;
  border-radius: var(--radius-md);
  color: #fff;
  font-weight: 600;
  font-size: 1rem;
  box-shadow: 0 2px 8px rgba(37,99,235,0.2);
}

.search-main button:hover {
  background: var(--primary-dark);
}

.search-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gap-sm);
}

.search-filters .chip {
  padding: 6px 16px;
  border-radius: 100px;
  font-size: 0.82rem;
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition);
}

.search-filters .chip:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.search-filters .chip.active {
  background: rgba(37,99,235,0.08);
  border-color: var(--primary);
  color: var(--primary);
  font-weight: 600;
}

/* ========== Detail Page ========== */
.detail-page {
  max-width: 1000px;
  margin: 0 auto;
}

.detail-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: var(--gap-lg);
  transition: color var(--transition);
}

.detail-back:hover {
  color: var(--primary);
}

.detail-gallery {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--bg-section);
  margin-bottom: var(--gap-xl);
  aspect-ratio: 16 / 9;
  border: 1px solid var(--border);
}

.gallery-main {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.gallery-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(8px);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  font-size: 1.2rem;
  cursor: pointer;
  transition: all var(--transition);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.gallery-nav:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.gallery-prev { left: 16px; }
.gallery-next { right: 16px; }

.gallery-thumbs {
  display: flex;
  gap: var(--gap-sm);
  margin-top: var(--gap-md);
  overflow-x: auto;
  padding-bottom: 4px;
}

.gallery-thumbs img {
  width: 72px;
  height: 54px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  flex-shrink: 0;
}

.gallery-thumbs img.active,
.gallery-thumbs img:hover {
  border-color: var(--primary);
}

.detail-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: var(--gap-lg);
  flex-wrap: wrap;
  gap: var(--gap-md);
}

.detail-header h1 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-primary);
}

.detail-header .detail-id {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  margin-top: 4px;
}

.detail-price-row {
  text-align: right;
}

.detail-price {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--accent);
}

.detail-price .unit {
  font-size: 1rem;
  color: var(--text-secondary);
}

.detail-deposit {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.detail-meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--gap-md);
  margin-bottom: var(--gap-xl);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--gap-lg);
  box-shadow: var(--shadow-sm);
}

.detail-meta-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.detail-meta-item .meta-label {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.detail-meta-item .meta-val {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

.detail-meta-item .meta-val.price {
  color: var(--accent);
}

.detail-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--gap-lg);
  margin-bottom: var(--gap-lg);
  box-shadow: var(--shadow-sm);
}

.detail-section h3 {
  font-size: 1.1rem;
  margin-bottom: var(--gap-md);
  padding-bottom: var(--gap-sm);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: var(--gap-sm);
  color: var(--text-primary);
}

.attr-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: var(--gap-md);
}

.attr-grid .attr-block {
  background: var(--bg-section);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: var(--gap-sm) var(--gap-md);
}

.attr-block .attr-key {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.attr-block .attr-val {
  font-size: 0.9rem;
  color: var(--text-primary);
  font-weight: 600;
  margin-top: 2px;
}

.owner-note {
  background: rgba(37,99,235,0.04);
  border: 1px solid rgba(37,99,235,0.12);
  border-radius: var(--radius-md);
  padding: var(--gap-md);
  color: var(--text-primary);
  font-size: 0.9rem;
  line-height: 1.7;
}

.skin-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gap-sm);
}

.skin-tag {
  padding: 6px 14px;
  background: rgba(37,99,235,0.06);
  border: 1px solid rgba(37,99,235,0.12);
  border-radius: 100px;
  font-size: 0.82rem;
  color: var(--primary);
}

.operator-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gap-xs);
}

.operator-tag {
  padding: 4px 12px;
  background: var(--bg-section);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 0.78rem;
  color: var(--text-secondary);
}

/* ========== Footer ========== */
.footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  padding: var(--gap-xl) var(--gap-xl);
  text-align: center;
}

.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
}

.footer p {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: var(--gap-lg);
  margin-bottom: var(--gap-md);
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

/* ========== Toast / Notification ========== */
.toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-card);
  border: 1px solid var(--primary);
  color: var(--text-primary);
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  z-index: 9999;
  box-shadow: var(--shadow-lg);
  animation: toastIn 0.3s ease, toastOut 0.3s ease 2.5s forwards;
}

@keyframes toastIn {
  from { opacity: 0; transform: translateX(-50%) translateY(20px); }
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

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

/* ========== Empty State ========== */
.empty-state {
  text-align: center;
  padding: var(--gap-2xl);
  color: var(--text-muted);
}

.empty-state .empty-icon {
  font-size: 3rem;
  margin-bottom: var(--gap-md);
  opacity: 0.5;
}

.empty-state p {
  font-size: 0.95rem;
}

/* ========== Loading ========== */
.loading {
  text-align: center;
  padding: var(--gap-2xl);
  color: var(--text-muted);
}

.spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 12px;
}

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

/* ========== Responsive ========== */
@media (max-width: 768px) {
  :root {
    --nav-height: var(--nav-height-mobile);
  }

  .nav-links {
    position: fixed;
    top: var(--nav-height-mobile);
    left: 0;
    right: 0;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: var(--gap-md);
    gap: 4px;
    display: none;
    z-index: 999;
    box-shadow: var(--shadow-md);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    padding: 12px 16px;
    width: 100%;
    border-radius: var(--radius-sm);
  }

  .nav-toggle {
    display: flex;
  }

  .hero h1 {
    font-size: 1.8rem;
  }

  .hero p {
    font-size: 0.95rem;
  }

  .product-grid {
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: var(--gap-md);
  }

  .filter-row {
    flex-direction: column;
  }

  .filter-group {
    min-width: 100%;
  }

  .detail-header {
    flex-direction: column;
  }

  .detail-price-row {
    text-align: left;
  }

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

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

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

  .search-hero form {
    flex-direction: column;
  }

  .search-main {
    flex-direction: column;
  }

  .container {
    padding: 0 var(--gap-md);
  }

  .section-title {
    font-size: 1.15rem;
  }
}

@media (max-width: 480px) {
  .product-grid {
    grid-template-columns: 1fr;
  }

  .detail-meta-grid {
    grid-template-columns: 1fr;
  }

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

  .hero h1 {
    font-size: 1.5rem;
  }

  .card-price {
    font-size: 1.25rem;
  }
}