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

html {
  height: 100%;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100%;
  min-height: 100dvh;
  font-family: var(--font-body);
  color: var(--jd-text);
  background: #eef6f7;
  position: relative;
}

/* Viewport-locked wash — avoids scroll banding + keeps mobile fixed UI stable */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(120% 80% at 10% -10%, rgba(98, 190, 210, 0.28), transparent 55%),
    radial-gradient(90% 70% at 100% 0%, rgba(233, 0, 90, 0.1), transparent 50%),
    radial-gradient(80% 60% at 0% 100%, rgba(98, 190, 210, 0.16), transparent 55%),
    radial-gradient(70% 50% at 100% 100%, rgba(233, 0, 90, 0.08), transparent 50%),
    linear-gradient(180deg, #eef6f7 0%, var(--jd-warm) 42%, #e8f0f1 100%);
}

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

button,
a {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: 0;
  background: none;
}

:focus-visible {
  outline: 2px solid var(--jd-sky);
  outline-offset: 2px;
}

.app {
  min-height: 100dvh;
  padding:
    calc(var(--topbar-h) + 18px + env(safe-area-inset-top, 0px))
    16px
    calc(var(--tabbar-h) + var(--tabbar-inset) + 28px + env(safe-area-inset-bottom, 0px));
}

.topbar {
  position: fixed;
  top: calc(10px + env(safe-area-inset-top, 0px));
  left: 50%;
  transform: translateX(-50%);
  z-index: 120;
  width: calc(100% - 24px);
  max-width: var(--max);
  height: var(--topbar-h);
  display: grid;
  grid-template-columns: 48px 1fr 48px;
  align-items: center;
  gap: 8px;
  padding: 0 10px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  overflow: hidden;
}

.topbar::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 180% at 50% 30%, rgba(255, 255, 255, 0.35), transparent 50%),
    linear-gradient(145deg, rgba(255, 255, 255, 0.45), var(--glass-bg));
  backdrop-filter: blur(var(--glass-blur)) saturate(145%) brightness(1.04);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(145%) brightness(1.04);
  z-index: -1;
}

.topbar__avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid rgba(255, 255, 255, 0.85);
  box-shadow: 0 4px 14px rgba(23, 78, 99, 0.18);
  padding: 0;
}

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

.topbar__title {
  margin: 0;
  text-align: center;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.15rem, 3.6vw, 1.45rem);
  letter-spacing: 0.01em;
  color: var(--jd-deep);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.topbar__search {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--jd-deep);
  background: rgba(255, 255, 255, 0.45);
}

.topbar__search svg {
  width: 20px;
  height: 20px;
}

.tabbar-veil {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 110;
  height: calc(var(--tabbar-h) + var(--tabbar-inset) + 64px + env(safe-area-inset-bottom, 0px));
  pointer-events: none;
  background: linear-gradient(
    to top,
    rgba(238, 246, 247, 0.92) 0%,
    rgba(238, 246, 247, 0.55) 42%,
    rgba(238, 246, 247, 0) 100%
  );
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  -webkit-mask-image: linear-gradient(to top, #000 18%, rgba(0, 0, 0, 0.55) 55%, transparent 100%);
  mask-image: linear-gradient(to top, #000 18%, rgba(0, 0, 0, 0.55) 55%, transparent 100%);
}

.tabbar {
  position: fixed;
  left: 12px;
  right: 12px;
  bottom: calc(var(--tabbar-inset) + env(safe-area-inset-bottom, 0px));
  transform: none;
  z-index: 120;
  width: auto;
  max-width: min(520px, var(--max));
  margin-inline: auto;
  height: var(--tabbar-h);
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 2px;
  padding: 6px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow), 0 -8px 28px rgba(23, 78, 99, 0.08);
  overflow: hidden;
  /* keep above iOS browser chrome / scrolling quirks */
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
}

.tabbar::before {
  content: "";
  position: absolute;
  inset: 0;
  background-color: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur)) saturate(145%) brightness(1.04);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(145%) brightness(1.04);
  z-index: -1;
}

.tabbar__capsule {
  position: absolute;
  top: 6px;
  bottom: 6px;
  left: 6px;
  width: calc((100% - 12px) / 5);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.78);
  box-shadow: inset 0 1px 0 var(--glass-highlight), 0 4px 14px rgba(23, 78, 99, 0.08);
  transition: transform 280ms var(--ease);
  pointer-events: none;
  z-index: 0;
}

.tabbar__item {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  min-width: 0;
  padding: 4px 2px;
  border-radius: var(--radius-pill);
  color: var(--jd-deep);
  text-decoration: none;
  opacity: 0.72;
  transition: opacity 200ms var(--ease), color 200ms var(--ease);
}

.tabbar__item.is-active {
  opacity: 1;
  color: var(--jd-pink);
}

.tabbar__icon {
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
}

.tabbar__icon svg {
  width: 20px;
  height: 20px;
}

.tabbar__label {
  font-size: 0.62rem;
  line-height: 1.15;
  font-weight: 600;
  text-align: center;
  letter-spacing: 0.01em;
}

.main {
  width: min(100%, var(--max));
  margin: 0 auto;
}

.section-head {
  margin: 0 0 14px;
}

.section-head h1 {
  margin: 0 0 4px;
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 5vw, 2.35rem);
  font-weight: 600;
  color: var(--jd-deep);
  letter-spacing: 0.01em;
}

.section-head p {
  margin: 0;
  color: var(--jd-muted);
  font-size: 0.95rem;
}

.subtabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  padding: 5px;
  margin: 0 0 14px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.7);
}

.subtabs--3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.subtabs button {
  border-radius: var(--radius-pill);
  padding: 10px 8px;
  font-weight: 650;
  font-size: 0.78rem;
  color: var(--jd-deep);
  line-height: 1.15;
}

.subtabs--3 button {
  font-size: 0.72rem;
  padding: 10px 6px;
}

.subtabs button.is-active {
  background: #fff;
  color: var(--jd-pink);
  box-shadow: 0 4px 14px rgba(23, 78, 99, 0.08);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.topic-search {
  margin-bottom: 8px;
}

.topic-search__bar input {
  width: 100%;
  padding: 14px 16px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 255, 255, 0.8);
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 8px 24px rgba(23, 78, 99, 0.08);
  font: inherit;
  font-size: 1rem;
  color: var(--jd-deep);
  margin-bottom: 14px;
}

.topic-search__hint {
  margin: 0 0 10px;
  color: var(--jd-muted);
  font-size: 0.88rem;
}

.topic-search__hits {
  margin-bottom: 22px;
}

.topic-heading {
  margin: 4px 0 12px;
  font-family: var(--font-display);
  font-size: 1.45rem;
  color: var(--jd-deep);
}

.topic-heading span {
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--jd-muted);
  margin-left: 6px;
}

.topic-back {
  display: inline-flex;
  margin-bottom: 8px;
  padding: 8px 12px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(23, 78, 99, 0.1);
  color: var(--jd-deep);
  font-weight: 650;
  font-size: 0.85rem;
}

.topic-groups {
  display: grid;
  gap: 16px;
}

.topic-group__letter {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 1.35rem;
  color: var(--jd-pink);
}

.topic-group__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.topic-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.85);
  box-shadow: 0 4px 14px rgba(23, 78, 99, 0.06);
  color: var(--jd-deep);
  font-weight: 650;
  font-size: 0.88rem;
}

.topic-chip em {
  font-style: normal;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--jd-muted);
  background: rgba(23, 78, 99, 0.08);
  padding: 2px 7px;
  border-radius: 999px;
}

.topic-chip:hover {
  color: var(--jd-pink);
}

.slim-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  margin: 0 0 16px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.75);
  background: linear-gradient(120deg, rgba(255, 255, 255, 0.72), rgba(221, 241, 243, 0.55));
  box-shadow: 0 8px 24px rgba(23, 78, 99, 0.08);
  text-align: left;
  width: 100%;
}

.slim-bar__copy {
  min-width: 0;
}

.slim-bar__kicker {
  display: block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--jd-pink);
  margin-bottom: 2px;
}

.slim-bar__title {
  display: block;
  font-weight: 700;
  color: var(--jd-deep);
  font-size: 0.95rem;
  line-height: 1.25;
}

.slim-bar__meta {
  display: block;
  margin-top: 2px;
  color: var(--jd-muted);
  font-size: 0.82rem;
}

.slim-bar__cta {
  flex: 0 0 auto;
  padding: 10px 14px;
  border-radius: var(--radius-pill);
  background: var(--jd-pink);
  color: #fff;
  font-weight: 700;
  font-size: 0.82rem;
  white-space: nowrap;
}

.video-grid,
.book-grid {
  display: grid;
  gap: 14px;
}

.video-grid {
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
}

.book-grid {
  grid-template-columns: 1fr 1fr;
  gap: 16px 12px;
}

.video-card,
.book-card {
  border: 0;
  padding: 0;
  text-align: left;
  background: transparent;
  width: 100%;
}

.video-card__thumb,
.book-card__cover {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: rgba(23, 78, 99, 0.08);
  box-shadow: 0 10px 24px rgba(23, 78, 99, 0.12);
}

.video-card__thumb {
  aspect-ratio: 16 / 10;
}

.book-card__cover {
  aspect-ratio: 2 / 3;
}

.video-card__thumb img,
.book-card__cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.video-card__play {
  position: absolute;
  inset: auto 10px 10px auto;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, 0.88);
  color: var(--jd-pink);
  box-shadow: 0 4px 12px rgba(23, 78, 99, 0.18);
}

.video-card__title,
.book-card__title {
  margin: 8px 2px 0;
  font-size: 0.88rem;
  font-weight: 650;
  line-height: 1.25;
  color: var(--jd-deep);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.book-card__meta {
  margin: 3px 2px 0;
  font-size: 0.72rem;
  font-weight: 600;
  line-height: 1.3;
  color: var(--jd-muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-card__meta {
  margin: 4px 2px 0;
  font-size: 0.72rem;
  font-weight: 650;
  color: var(--jd-muted);
}

.filters {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin: 0 0 16px;
}

.filters__field {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--jd-muted);
}

.filters__field select {
  appearance: none;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 255, 255, 0.75);
  background: rgba(255, 255, 255, 0.72) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23174e63' d='M1 1l5 5 5-5'/%3E%3C/svg%3E") no-repeat right 14px center;
  padding: 11px 36px 11px 14px;
  font: inherit;
  font-size: 0.92rem;
  font-weight: 650;
  text-transform: none;
  letter-spacing: 0;
  color: var(--jd-deep);
  box-shadow: 0 6px 18px rgba(23, 78, 99, 0.06);
}

.year-group {
  margin: 8px 0 32px;
}

.year-group__heading {
  margin: 18px 0 16px;
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 9vw, 3.25rem);
  font-weight: 600;
  line-height: 1;
  color: var(--jd-deep);
  letter-spacing: 0.01em;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 0.35em;
  text-align: center;
}

.year-group__heading span {
  font-family: var(--font-body);
  font-size: 0.38em;
  font-weight: 650;
  color: var(--jd-muted);
  letter-spacing: 0;
}

.player-frame--video video {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #000;
}

.video-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: 6px;
  padding: 0 2px;
}

.tag {
  font-size: 0.65rem;
  font-weight: 650;
  padding: 3px 7px;
  border-radius: var(--radius-pill);
  background: rgba(23, 78, 99, 0.08);
  color: var(--jd-deep);
}

.sheet-backdrop {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(16, 36, 44, 0.45);
  backdrop-filter: blur(4px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 220ms var(--ease);
}

.sheet-backdrop.is-open {
  opacity: 1;
  pointer-events: auto;
}

.sheet {
  position: fixed;
  left: 50%;
  bottom: 0;
  transform: translate(-50%, 110%);
  z-index: 210;
  width: min(100%, 640px);
  max-height: min(92dvh, 860px);
  overflow: auto;
  border-radius: 28px 28px 0 0;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.96), #f4f8f8);
  box-shadow: 0 -20px 60px rgba(8, 24, 32, 0.28);
  padding: 14px 16px calc(24px + env(safe-area-inset-bottom, 0px));
  transition: transform 280ms var(--ease);
}

.sheet.is-open {
  transform: translate(-50%, 0);
}

.sheet__handle {
  width: 42px;
  height: 4px;
  border-radius: 999px;
  background: rgba(23, 78, 99, 0.18);
  margin: 0 auto 14px;
}

.sheet__close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(23, 78, 99, 0.08);
  color: var(--jd-deep);
  font-size: 1.2rem;
  line-height: 1;
}

.player-frame {
  position: relative;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #000;
  margin-bottom: 14px;
}

.player-frame iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

.sheet h2 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 1.55rem;
  color: var(--jd-deep);
}

.sheet p {
  margin: 0 0 12px;
  color: var(--jd-muted);
  line-height: 1.45;
}

.sheet__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 12px 16px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  text-decoration: none;
  border: 1px solid transparent;
}

.btn--primary {
  background: var(--jd-pink);
  color: #fff;
}

.btn--ghost {
  background: rgba(255, 255, 255, 0.7);
  border-color: rgba(23, 78, 99, 0.12);
  color: var(--jd-deep);
}

.event-list {
  display: grid;
  gap: 10px;
  margin: 12px 0 0;
}

.event-item {
  display: block;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid rgba(23, 78, 99, 0.08);
  text-decoration: none;
}

.event-item strong {
  display: block;
  color: var(--jd-deep);
  margin-bottom: 2px;
}

.event-item span {
  color: var(--jd-muted);
  font-size: 0.85rem;
}

.search-panel {
  padding-top: 8px;
}

.search-input {
  width: 100%;
  padding: 14px 16px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(23, 78, 99, 0.12);
  background: rgba(255, 255, 255, 0.85);
  font-size: 1rem;
  margin-bottom: 12px;
}

.search-results {
  display: grid;
  gap: 8px;
}

.search-hit {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 10px;
  align-items: center;
  padding: 8px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.7);
  text-align: left;
  width: 100%;
}

.search-hit img {
  width: 72px;
  height: 48px;
  object-fit: cover;
  border-radius: 10px;
}

.search-hit strong {
  display: block;
  font-size: 0.92rem;
  color: var(--jd-deep);
}

.search-hit span {
  font-size: 0.75rem;
  color: var(--jd-muted);
}

.bio-portrait {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 12px;
  border: 3px solid #fff;
  box-shadow: 0 10px 24px rgba(23, 78, 99, 0.16);
}

.bio-wrap {
  text-align: center;
}

.bio-wrap h2 {
  margin-bottom: 2px;
}

.bio-wrap .role {
  color: var(--jd-pink);
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 12px;
}

.bio-wrap p {
  text-align: left;
}

.empty {
  padding: 28px 12px;
  text-align: center;
  color: var(--jd-muted);
}

.booking-frame {
  width: 100%;
  min-height: 420px;
  border: 0;
  border-radius: var(--radius-md);
  background: #fff;
}

@media (min-width: 720px) {
  .video-grid {
    grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  }
  .book-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px 16px;
    max-width: none;
  }

  .tabbar {
    left: 50%;
    right: auto;
    width: min(520px, calc(100% - 24px));
    transform: translateX(-50%);
    margin-inline: 0;
  }
  .tabbar__label {
    font-size: 0.68rem;
  }

  .sheet {
    top: 50%;
    bottom: auto;
    left: 50%;
    width: min(1080px, 92vw);
    max-height: min(94dvh, 920px);
    border-radius: 28px;
    padding: 20px 24px 28px;
    box-shadow: 0 28px 80px rgba(8, 24, 32, 0.32);
    transform: translate(-50%, -46%) scale(0.96);
    opacity: 0;
    pointer-events: none;
    transition:
      transform 280ms var(--ease),
      opacity 220ms var(--ease);
  }

  .sheet.is-open {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
    pointer-events: auto;
  }

  .sheet__handle {
    display: none;
  }

  .sheet__close {
    top: 16px;
    right: 16px;
    width: 40px;
    height: 40px;
  }

  .player-frame {
    margin-bottom: 18px;
    border-radius: 18px;
  }

  .sheet h2 {
    font-size: clamp(1.7rem, 2.4vw, 2.15rem);
  }
}