/* ============================================================
   KASTON 动画视频页面样式
   ============================================================ */

/* ===== 变量 ===== */
:root {
  --bg: #05080f;
  --bg-soft: #0a0f1a;
  --ink: #e8eef7;
  --ink-dim: #8a96a8;
  --ink-faint: #4a5568;
  --cyan: #7fd4ff;
  --cyan-soft: rgba(127, 212, 255, 0.12);
  --cyan-line: rgba(127, 212, 255, 0.25);
  --line-soft: rgba(127, 212, 255, 0.08);
  --card-bg: rgba(10, 15, 26, 0.7);
  --card-hover: rgba(127, 212, 255, 0.06);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Noto Sans SC', sans-serif;
  background: var(--bg);
  color: var(--ink);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

/* ===== 背景层 ===== */
.bg-stage {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.bg-hero {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(127, 212, 255, 0.08), transparent),
    radial-gradient(ellipse 60% 40% at 80% 80%, rgba(127, 212, 255, 0.04), transparent),
    linear-gradient(180deg, #05080f 0%, #080c16 50%, #05080f 100%);
}

.bg-veil {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, transparent 49.5%, rgba(127, 212, 255, 0.015) 50%, transparent 50.5%),
    linear-gradient(0deg, transparent 49.5%, rgba(127, 212, 255, 0.015) 50%, transparent 50.5%);
  background-size: 80px 80px;
  opacity: 0.5;
}

.fx-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

/* ===== 顶部导航 ===== */
.site-header {
  position: relative;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px clamp(24px, 6vw, 80px);
  max-width: 1400px;
  margin: 0 auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  transition: opacity 0.3s;
}

.logo:hover { opacity: 0.8; }

.logo-core {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--cyan-line);
}

.logo-text {
  font-family: 'Orbitron', sans-serif;
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--ink);
}

.search-wrap {
  position: relative;
  width: min(420px, 40vw);
}

.search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  color: var(--ink-dim);
  pointer-events: none;
}

.search-input {
  width: 100%;
  padding: 12px 16px 12px 44px;
  background: rgba(10, 15, 26, 0.6);
  border: 1px solid var(--line-soft);
  border-radius: 8px;
  color: var(--ink);
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.3s, background 0.3s;
}

.search-input::placeholder { color: var(--ink-faint); }

.search-input:focus {
  border-color: var(--cyan-line);
  background: rgba(10, 15, 26, 0.9);
}

/* ===== 主内容 ===== */
.site-main {
  position: relative;
  z-index: 1;
  padding: 0 clamp(24px, 6vw, 80px);
  max-width: 1400px;
  margin: 0 auto;
}

/* ===== 页面标题 ===== */
.page-hero {
  padding: clamp(40px, 7vh, 72px) 0 48px;
  text-align: center;
}

.page-eyebrow {
  font-family: 'Orbitron', sans-serif;
  font-size: 13px;
  letter-spacing: 0.3em;
  color: var(--cyan);
  margin-bottom: 16px;
  opacity: 0.8;
}

.page-title {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 300;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
  background: linear-gradient(180deg, #fff 0%, #a8c4e0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-desc {
  font-size: 15px;
  color: var(--ink-dim);
  font-weight: 300;
  letter-spacing: 0.05em;
}

/* ===== 分类导航 ===== */
.category-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 32px;
}

.cat-btn {
  padding: 9px 22px;
  background: transparent;
  border: 1px solid var(--line-soft);
  border-radius: 6px;
  color: var(--ink-dim);
  font-size: 14px;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.3s;
  letter-spacing: 0.05em;
}

.cat-btn:hover {
  color: var(--ink);
  border-color: var(--cyan-line);
  background: var(--cyan-soft);
}

.cat-btn.active {
  color: var(--cyan);
  border-color: var(--cyan);
  background: var(--cyan-soft);
}

/* ===== 结果统计 ===== */
.result-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 4px 20px;
  font-size: 13px;
  color: var(--ink-dim);
  letter-spacing: 0.05em;
}

/* ===== 卡片网格 ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 28px;
  margin-bottom: 48px;
}

.anim-card {
  background: var(--card-bg);
  border: 1px solid var(--line-soft);
  border-radius: 10px;
  overflow: hidden;
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  position: relative;
}

.anim-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(127, 212, 255, 0.03), transparent);
  opacity: 0;
  transition: opacity 0.4s;
  pointer-events: none;
  z-index: 1;
}

.anim-card:hover {
  transform: translateY(-6px);
  border-color: var(--cyan-line);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4), 0 0 30px rgba(127, 212, 255, 0.06);
}

.anim-card:hover::before { opacity: 1; }

.card-poster {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, #0d1420, #0a0f1a);
  overflow: hidden;
}

.card-poster img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.anim-card:hover .card-poster img {
  transform: scale(1.05);
}

.card-poster-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-faint);
  font-size: 13px;
  letter-spacing: 0.1em;
}

.card-play-icon {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: all 0.4s;
  backdrop-filter: blur(4px);
}

.anim-card:hover .card-play-icon {
  opacity: 1;
  background: rgba(127, 212, 255, 0.2);
  border-color: var(--cyan);
}

.card-play-icon svg {
  width: 22px;
  height: 22px;
  color: #fff;
  margin-left: 3px;
}

.card-body {
  padding: 18px 20px 20px;
  position: relative;
  z-index: 2;
}

.card-title {
  font-size: 16px;
  font-weight: 400;
  color: var(--ink);
  margin-bottom: 8px;
  letter-spacing: 0.03em;
  line-height: 1.4;
}

.card-desc {
  font-size: 13px;
  color: var(--ink-dim);
  line-height: 1.6;
  font-weight: 300;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-cat-tag {
  display: inline-block;
  margin-top: 12px;
  padding: 3px 10px;
  background: var(--cyan-soft);
  border: 1px solid var(--cyan-line);
  border-radius: 4px;
  font-size: 11px;
  color: var(--cyan);
  letter-spacing: 0.08em;
}

/* ===== 弹窗 ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-box {
  background: var(--bg-soft);
  border: 1px solid var(--cyan-line);
  border-radius: 14px;
  width: 100%;
  max-width: 860px;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  transform: translateY(20px) scale(0.98);
  transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  box-shadow: 0 40px 100px rgba(0, 0, 0, 0.6), 0 0 60px rgba(127, 212, 255, 0.08);
}

.modal-overlay.active .modal-box {
  transform: translateY(0) scale(1);
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  z-index: 10;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.5);
  border: 1px solid var(--line-soft);
  color: var(--ink-dim);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s;
  font-size: 18px;
}

.modal-close:hover {
  color: var(--ink);
  border-color: var(--cyan-line);
  background: rgba(127, 212, 255, 0.1);
}

.modal-poster {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, #0d1420, #0a0f1a);
  overflow: hidden;
  border-radius: 14px 14px 0 0;
}

.modal-poster img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.modal-poster-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-faint);
  font-size: 14px;
  letter-spacing: 0.1em;
}

.modal-content {
  padding: 32px 36px 36px;
}

.modal-cat {
  display: inline-block;
  padding: 4px 12px;
  background: var(--cyan-soft);
  border: 1px solid var(--cyan-line);
  border-radius: 4px;
  font-size: 12px;
  color: var(--cyan);
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}

.modal-title {
  font-size: 26px;
  font-weight: 400;
  color: var(--ink);
  margin-bottom: 20px;
  letter-spacing: 0.04em;
  line-height: 1.4;
}

.modal-intro {
  font-size: 14px;
  color: var(--ink-dim);
  line-height: 1.8;
  font-weight: 300;
  margin-bottom: 32px;
}

.modal-intro p { margin-bottom: 12px; }
.modal-intro p:last-child { margin-bottom: 0; }

.modal-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn-play {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 36px;
  background: linear-gradient(135deg, rgba(127, 212, 255, 0.15), rgba(127, 212, 255, 0.05));
  border: 1px solid var(--cyan);
  border-radius: 8px;
  color: var(--cyan);
  font-size: 15px;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.3s;
  letter-spacing: 0.08em;
}

.btn-play:hover {
  background: rgba(127, 212, 255, 0.2);
  box-shadow: 0 0 30px rgba(127, 212, 255, 0.2);
  transform: translateY(-2px);
}

.btn-play svg {
  width: 18px;
  height: 18px;
}

.btn-close-modal {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  background: transparent;
  border: 1px solid var(--line-soft);
  border-radius: 8px;
  color: var(--ink-dim);
  font-size: 14px;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.3s;
}

.btn-close-modal:hover {
  color: var(--ink);
  border-color: var(--cyan-line);
}

/* ===== 分页 ===== */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-bottom: 64px;
}

.page-btn {
  min-width: 38px;
  height: 38px;
  padding: 0 12px;
  background: transparent;
  border: 1px solid var(--line-soft);
  border-radius: 6px;
  color: var(--ink-dim);
  font-size: 13px;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.3s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-btn:hover:not(:disabled) {
  color: var(--ink);
  border-color: var(--cyan-line);
}

.page-btn.active {
  color: var(--cyan);
  border-color: var(--cyan);
  background: var(--cyan-soft);
}

.page-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

/* ===== 无结果 ===== */
.no-result {
  text-align: center;
  padding: 80px 20px;
  color: var(--ink-dim);
}

.no-result p {
  font-size: 16px;
  margin-bottom: 8px;
}

.no-result span {
  font-size: 13px;
  color: var(--ink-faint);
}

/* ===== 页脚 ===== */
.site-footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 32px 24px 40px;
  border-top: 1px solid var(--line-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.icp-link {
  font-size: 12px;
  color: var(--ink-faint);
  letter-spacing: 0.05em;
  transition: color 0.3s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.icp-link:hover { color: var(--ink-dim); }

.icp-link img {
  width: 16px;
  height: 16px;
  border-radius: 2px;
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .site-header {
    padding: 18px 20px;
    flex-wrap: wrap;
    gap: 12px;
  }

  .search-wrap {
    width: 100%;
    order: 3;
  }

  .site-main { padding: 0 20px; }

  .page-hero { padding: 32px 0 36px; }

  .card-grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 18px;
  }

  .modal-content { padding: 24px 20px 28px; }

  .modal-title { font-size: 20px; }

  .modal-actions { flex-direction: column; }

  .btn-play, .btn-close-modal {
    width: 100%;
    justify-content: center;
  }

  .category-nav { gap: 8px; }

  .cat-btn { padding: 8px 16px; font-size: 13px; }
}

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

  .logo-text { font-size: 17px; }
}