:root {
  --bg: #141414;
  --text: #ffffff;
  --text-sub: #e0e0e0;
  --netflix-red: #e50914;
  --gutter-mobile: 12px;
  --gutter-tablet: 16px;
  --gutter-desktop: 24px;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

.shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 16px;
}

@media (min-width: 768px) {
  .shell {
    padding: 16px 24px;
  }
}

@media (min-width: 1280px) {
  .shell {
    padding: 24px 48px;
  }
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(6px);
  background: rgba(20, 20, 20, 0.9);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.brand-area {
  display: flex;
  align-items: center;
  gap: 12px;
}

.home-link {
  font-weight: 800;
  letter-spacing: 0.5px;
  font-size: 20px;
  text-decoration: none;
  color: #fff;
}

.home-link:hover {
  color: #fff;
  opacity: 0.9;
}

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

.search input {
  background: #1f1f1f;
  border: 1px solid #2c2c2c;
  color: var(--text);
  padding: 10px 12px;
  border-radius: 8px;
  min-width: 180px;
}

.search input:focus {
  outline: 1px solid var(--netflix-red);
}

.search button {
  background: var(--netflix-red);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 10px 14px;
  font-weight: 700;
  cursor: pointer;
}

.page {
  display: flex;
  flex-direction: column;
  gap: 64px;
  padding-top: 16px;
}

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

.section-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 16px;
}

.section-icon {
  color: var(--netflix-red);
  font-size: 18px;
}

.section-title {
  margin: 0;
  font-weight: 700;
  font-size: 18px;
}

@media (min-width: 768px) {
  .section-header {
    padding: 0 24px;
  }
  .section-title {
    font-size: 20px;
  }
}

@media (min-width: 1280px) {
  .section-header {
    position: sticky;
    top: 64px;
    padding: 0 48px;
    backdrop-filter: blur(6px);
    background: linear-gradient(180deg, rgba(20, 20, 20, 0.9), rgba(20, 20, 20, 0.8));
  }
  .section-title {
    font-size: 24px;
  }
}

.posters-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--gutter-mobile);
  padding: 0 16px;
}

.poster-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  grid-column: span 2;
  transform-origin: center;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.poster-media {
  position: relative;
  width: 100%;
  aspect-ratio: 2 / 3;
  overflow: hidden;
  border-radius: 10px;
  background: #1f1f1f;
}

.poster-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: contrast(1.25) saturate(1.05) brightness(0.98);
  transition: transform 0.3s ease, filter 0.3s ease;
}

.poster-gradient {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0) 40%, rgba(0, 0, 0, 0.7) 100%);
  pointer-events: none;
}

.poster-text {
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 16px;
  z-index: 1;
}

.poster-title {
  font-weight: 700;
  font-size: 14px;
  line-height: 1.3;
  color: #fff;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  letter-spacing: 0.5px;
}

.poster-subtitle {
  margin-top: 2px;
  font-size: 12px;
  color: var(--text-sub);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

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

.poster-card:hover .poster-media img {
  transform: scale(1.05);
  filter: contrast(1.3) saturate(1.08);
}

.poster-card:hover .poster-title {
  font-weight: 900;
}

.poster-card:active {
  transform: scale(0.98);
}

.poster-skeleton {
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, #333 0%, #444 50%, #333 100%);
  animation: skeleton 1.5s infinite;
}

.empty {
  color: #bfbfbf;
  padding: 0 16px;
}

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

/* Tone filters */
.tone-romance .poster-media img {
  filter: contrast(1.2) saturate(1.1) hue-rotate(-10deg) brightness(1.05);
}
.tone-action .poster-media img {
  filter: contrast(1.35) saturate(0.95) brightness(0.98);
}
.tone-mystery .poster-media img {
  filter: contrast(1.2) saturate(0.6) brightness(0.9);
}
.tone-family .poster-media img {
  filter: contrast(1.15) saturate(1.05) brightness(1.02);
}
.tone-scifi .poster-media img {
  filter: contrast(1.25) saturate(1.05) hue-rotate(12deg);
}

/* Tablet */
@media (min-width: 768px) {
  .posters-grid {
    grid-template-columns: repeat(8, minmax(0, 1fr));
    gap: var(--gutter-tablet);
    padding: 0 24px;
  }
  .poster-card {
    grid-column: span 2;
  }
  .poster-title {
    font-size: 16px;
  }
  .poster-subtitle {
    font-size: 12px;
  }
}

/* Desktop */
@media (min-width: 1280px) {
  .posters-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: var(--gutter-desktop);
    padding: 0 48px;
  }
  .poster-card {
    grid-column: span 2;
  }
  .poster-title {
    font-size: 18px;
  }
  .poster-subtitle {
    font-size: 12px;
  }
}

.detail-hero {
  padding: 32px 16px;
  background-size: cover;
  background-position: center;
}

.detail-shell {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: start;
}

.detail-poster img {
  width: 100%;
  max-width: 320px;
  border-radius: 12px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.45);
  display: block;
}

.detail-meta {
  max-width: 800px;
}

.detail-title {
  margin: 0 0 8px 0;
  font-size: 24px;
  font-weight: 800;
}

.detail-subtitle {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-sub);
  font-size: 14px;
}

.detail-subtitle .dot {
  color: #666;
}

.detail-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.tag {
  padding: 6px 10px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  font-size: 12px;
}

.detail-tagline {
  font-style: italic;
  color: #f8f8f8;
  margin-top: 12px;
}

.detail-overview {
  margin-top: 12px;
  line-height: 1.6;
  color: #d9d9d9;
}

.detail-section {
  padding: 0 16px 8px;
}

.section-body {
  padding: 0 16px;
}

.recommend-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px;
  padding: 0;
  justify-items: start;
}

.cast-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 10px;
  padding: 0 0 8px;
  justify-items: start;
}

.cast-link {
  display: block;
  width: 100%;
  color: inherit;
  text-decoration: none;
}

.cast-card {
  background: #1f1f1f;
  border-radius: 12px;
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: center;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
  max-width: 170px;
  width: 100%;
  margin: 0;
}

.cast-avatar {
  width: 100%;
  aspect-ratio: 2 / 3;
  border-radius: 8px;
  overflow: hidden;
  background: #2a2a2a;
}

.cast-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.cast-name {
  font-weight: 700;
  text-align: center;
  font-size: 13px;
  line-height: 1.2;
}

.cast-role {
  font-size: 11px;
  color: var(--text-sub);
  text-align: center;
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.video-card {
  background: #1f1f1f;
  border-radius: 12px;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.video-embed {
  position: relative;
  width: 100%;
  padding-bottom: 66.6667%; /* 2:3 高度与海报一致 */
  overflow: hidden;
  border-radius: 10px;
  background: #000;
}

.video-embed iframe {
  position: absolute;
  width: 100%;
  height: 100%;
  border: 0;
  top: 0;
  left: 0;
}

.video-title {
  font-weight: 700;
}

.video-meta {
  font-size: 12px;
  color: var(--text-sub);
}

/* Person detail */
.person-hero {
  padding: 32px 16px;
  background: linear-gradient(180deg, rgba(20, 20, 20, 0.95), rgba(20, 20, 20, 0.85));
}

.person-shell {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 16px;
  align-items: start;
}

.person-avatar {
  width: 100%;
  max-width: 180px;
  border-radius: 12px;
  overflow: hidden;
  background: #1f1f1f;
}

.person-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.person-meta {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.person-name {
  margin: 0;
  font-size: 24px;
  font-weight: 800;
}

.person-sub {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--text-sub);
  font-size: 14px;
}

.person-sub .dot {
  color: #666;
}

.person-bio {
  margin: 0;
  color: #d9d9d9;
  line-height: 1.6;
}

.credits-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 4px 0 12px;
}

.credit-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 10px 12px;
  background: #1f1f1f;
  border-radius: 10px;
}

.credit-title a {
  color: #fff;
  font-weight: 700;
  text-decoration: none;
}

.credit-title a:hover {
  text-decoration: underline;
}

.credit-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-sub);
  font-size: 12px;
}

.credits-collapse {
  margin-top: 8px;
}

.credits-collapse > summary {
  color: var(--text);
  cursor: pointer;
  padding: 10px 12px;
  background: #1f1f1f;
  border-radius: 10px;
  list-style: none;
}

.credits-collapse > summary::-webkit-details-marker {
  display: none;
}

.credits-collapse[open] > summary {
  background: #242424;
}

@media (min-width: 768px) {
  .detail-hero {
    padding: 48px 24px;
  }
  .section-body {
    padding: 0 24px;
  }
  .detail-shell {
    grid-template-columns: 280px 1fr;
    gap: 32px;
  }
  .detail-title {
    font-size: 28px;
  }
  .cast-grid {
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 12px;
  }
  .cast-card {
    padding: 10px;
    max-width: 180px;
  }
  .recommend-grid {
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 12px;
  }
  .person-hero {
    padding: 48px 24px;
  }
  .person-shell {
    grid-template-columns: 200px 1fr;
    gap: 24px;
  }
  .person-name {
    font-size: 28px;
  }
}

@media (min-width: 1280px) {
  .detail-hero {
    padding: 64px 48px;
  }
  .section-body {
    padding: 0 48px;
  }
  .recommend-grid {
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 14px;
  }
  .detail-shell {
    grid-template-columns: 320px 1fr;
    gap: 40px;
  }
  .detail-title {
    font-size: 32px;
  }
  .cast-grid {
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 14px;
  }
  .person-hero {
    padding: 64px 48px;
  }
  .person-shell {
    grid-template-columns: 260px 1fr;
    gap: 32px;
  }
  .person-name {
    font-size: 32px;
  }
}