:root {
  --bg: #f5f5f7;
  --surface: rgba(255, 255, 255, 0.92);
  --line: rgba(0, 0, 0, 0.08);
  --text: #1d1d1f;
  --muted: #6e6e73;
  --shadow: 0 24px 60px rgba(15, 23, 42, 0.06);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 16px;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-right: env(safe-area-inset-right, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-left: env(safe-area-inset-left, 0px);
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  position: relative;
  margin: 0;
  background: linear-gradient(180deg, #fbfbfd 0%, #f5f5f7 42%, #f2f2f4 100%);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body.viewer-open {
  overflow: hidden;
}

button,
video {
  font: inherit;
}

.shell {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  opacity: 0;
  transition: opacity 520ms cubic-bezier(0.22, 1, 0.36, 1);
}

.auth {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(28px + var(--safe-top)) calc(18px + var(--safe-right)) calc(28px + var(--safe-bottom))
    calc(18px + var(--safe-left));
  background: radial-gradient(circle at 22% 8%, rgba(255, 255, 255, 0.9) 0%, rgba(245, 245, 247, 0.92) 44%),
    linear-gradient(180deg, #fbfbfd 0%, #f5f5f7 44%, #f2f2f4 100%);
  opacity: 1;
  transition: opacity 420ms cubic-bezier(0.22, 1, 0.36, 1);
}

.auth::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    135deg,
    rgba(0, 0, 0, 0.03) 0,
    rgba(0, 0, 0, 0.03) 1px,
    rgba(255, 255, 255, 0.04) 1px,
    rgba(255, 255, 255, 0.04) 4px
  );
  opacity: 0.22;
  mix-blend-mode: soft-light;
}

.auth[hidden] {
  display: none;
}

.auth-card {
  position: relative;
  width: min(420px, 100%);
  padding: 28px 24px 24px;
  border-radius: 34px;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(0, 0, 0, 0.06);
  box-shadow: 0 24px 72px rgba(15, 23, 42, 0.1);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  text-align: center;
  animation: authCardIn 560ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

.auth-eyebrow {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.auth-title {
  margin: 8px 0 18px;
  font-size: 24px;
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.auth-form {
  display: grid;
  gap: 12px;
  margin: 0;
  text-align: left;
}

.auth-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: -0.01em;
}

.auth-input {
  width: 100%;
  min-height: 50px;
  padding: 12px 14px;
  border-radius: 18px;
  border: 1px solid rgba(0, 0, 0, 0.12);
  background: rgba(255, 255, 255, 0.86);
  color: var(--text);
  font-size: 16px;
  outline: none;
  transition: border-color 180ms ease, box-shadow 180ms ease;
}

.auth-input:focus-visible {
  border-color: rgba(0, 0, 0, 0.22);
  box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.12);
}

.auth-error {
  padding: 10px 12px;
  border-radius: 16px;
  background: rgba(0, 0, 0, 0.06);
  color: rgba(29, 29, 31, 0.82);
  font-size: 13px;
  letter-spacing: -0.01em;
}

.auth-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  min-height: 50px;
  padding: 12px 16px;
  border-radius: 18px;
  border: 0;
  background: rgba(0, 0, 0, 0.88);
  color: #fff;
  font-weight: 600;
  letter-spacing: -0.01em;
  cursor: pointer;
  transition: transform 140ms ease, filter 140ms ease, background-color 140ms ease;
}

.auth-submit:active {
  transform: translateY(1px);
}

.auth-submit[disabled] {
  cursor: default;
  filter: grayscale(0.2);
  opacity: 0.85;
}

.auth-spinner {
  width: 16px;
  height: 16px;
  border-radius: 999px;
  border: 2px solid rgba(255, 255, 255, 0.28);
  border-top-color: rgba(255, 255, 255, 0.9);
  animation: authSpin 800ms linear infinite;
}

body.app-unlocked .auth {
  opacity: 0;
  pointer-events: none;
}

body.app-unlocked .shell {
  opacity: 1;
}

.footer {
  padding: 18px calc(16px + var(--safe-right)) calc(18px + var(--safe-bottom)) calc(16px + var(--safe-left));
  text-align: center;
}

.logout-btn {
  border: 0;
  padding: 10px 12px;
  border-radius: 999px;
  background: transparent;
  color: rgba(110, 110, 115, 0.9);
  font-size: 13px;
  letter-spacing: -0.01em;
  cursor: pointer;
  transition: background-color 160ms ease, color 160ms ease;
}

.logout-btn:focus-visible {
  outline: 2px solid rgba(0, 0, 0, 0.32);
  outline-offset: 3px;
}

.logout-btn:hover {
  background: rgba(0, 0, 0, 0.04);
  color: rgba(29, 29, 31, 0.9);
}

body:not(.app-unlocked) .logout-btn {
  pointer-events: none;
}

.auth-card.is-shaking {
  animation: authShake 460ms cubic-bezier(0.36, 0, 0.66, -0.2);
}

@keyframes authCardIn {
  from {
    opacity: 0;
    transform: translateY(18px) scale(0.985);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes authShake {
  0%,
  100% {
    transform: translateX(0);
  }
  18% {
    transform: translateX(-10px);
  }
  40% {
    transform: translateX(8px);
  }
  62% {
    transform: translateX(-6px);
  }
  82% {
    transform: translateX(4px);
  }
}

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

.header {
  padding: calc(26px + var(--safe-top)) calc(20px + var(--safe-right)) 12px calc(20px + var(--safe-left));
  text-align: center;
}

.hero-copy {
  max-width: 760px;
  margin: 0 auto;
  opacity: 0;
  transform: translateY(18px);
}

body.app-ready .hero-copy {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 700ms ease, transform 700ms cubic-bezier(0.22, 1, 0.36, 1);
}

.header h1 {
  margin: 0;
  font-size: clamp(40px, 5vw, 60px);
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1;
}

.hero-subtitle {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: clamp(17px, 1.7vw, 20px);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.32;
}

.hero-micro {
  display: none;
}

.content {
  position: relative;
  padding: 0 calc(14px + var(--safe-right)) calc(26px + var(--safe-bottom)) calc(14px + var(--safe-left));
}

.state {
  max-width: 520px;
  margin: 0 auto 18px;
  padding: 24px 20px;
  text-align: center;
  color: var(--muted);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
}

.gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  max-width: 1240px;
  margin: 0 auto;
  align-content: start;
}

.card {
  width: 100%;
  border: 0;
  padding: 0;
  background: transparent;
  cursor: pointer;
  text-align: left;
  justify-self: stretch;
  appearance: none;
  -webkit-appearance: none;
}

.card:focus:not(:focus-visible) {
  outline: none;
}

.card:focus-visible {
  outline: none;
}

.icon-btn:focus-visible,
.nav-btn:focus-visible {
  outline: 2px solid rgba(0, 0, 0, 0.32);
  outline-offset: 3px;
}

.card-surface {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 4 / 5;
  border-radius: 18px;
  overflow: hidden;
  background: #e8e8ec;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.05);
  transform: translateZ(0);
  transition: transform 180ms ease-out;
}

.card-surface::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.1);
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms ease-out;
}

.card img {
  width: 100%;
  height: 100%;
  border-radius: inherit;
  object-fit: cover;
  display: block;
  transition: opacity 180ms ease-out, transform 180ms ease-out, filter 180ms ease-out;
}

.card-name {
  display: none;
}

.card-play {
  position: absolute;
  inset: 50% auto auto 50%;
  width: 38px;
  height: 38px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.38);
  background: rgba(0, 0, 0, 0.34);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.15);
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, -50%) scale(0.9);
  transition: opacity 180ms ease-out, transform 180ms ease-out;
}

.card-play::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 10px;
  height: 12px;
  background: #fff;
  clip-path: polygon(0 0, 100% 50%, 0 100%);
  transform: translate(-40%, -50%);
}

.viewer {
  position: fixed;
  inset: 0;
  z-index: 100;
  color: #fff;
  background: transparent;
  opacity: 0;
  overflow: hidden;
  transition: opacity 200ms cubic-bezier(0.22, 1, 0.36, 1);
}

.viewer[hidden] {
  display: none;
}

.viewer.is-visible {
  opacity: 1;
}

.viewer-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.62);
  opacity: 0;
  transition: opacity 200ms cubic-bezier(0.22, 1, 0.36, 1);
}

.viewer-chrome {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: calc(12px + var(--safe-top)) calc(14px + var(--safe-right)) 10px calc(14px + var(--safe-left));
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity 220ms cubic-bezier(0.22, 1, 0.36, 1), transform 220ms cubic-bezier(0.22, 1, 0.36, 1);
}

.viewer-stage {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  width: 100%;
  min-height: 100vh;
  min-height: 100dvh;
  padding: calc(68px + var(--safe-top)) calc(18px + var(--safe-right)) calc(24px + var(--safe-bottom))
    calc(18px + var(--safe-left));
  opacity: 1;
}

.viewer-frame {
  position: relative;
  width: auto;
  height: min(820px, calc(100dvh - 96px));
  aspect-ratio: var(--media-ratio, 9 / 16);
  max-width: calc(100vw - 200px);
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border-radius: 18px;
  overflow: hidden;
  opacity: 0;
  transform: scale(0.985);
  transition: opacity 200ms cubic-bezier(0.22, 1, 0.36, 1), transform 200ms cubic-bezier(0.22, 1, 0.36, 1);
}

.viewer-frame video {
  width: 100%;
  height: 100%;
  display: block;
  border-radius: inherit;
  object-fit: contain;
  max-width: 100%;
  max-height: 100%;
  background: transparent;
  transition: opacity 160ms ease;
}

.viewer.is-visible .viewer-backdrop {
  opacity: 1;
}

.viewer.is-visible .viewer-chrome {
  opacity: 1;
  transform: translateY(0);
}

.viewer.is-visible .viewer-frame {
  opacity: 1;
  transform: scale(1);
}

.viewer.is-switching .viewer-frame video {
  opacity: 0;
}

.name-overlay {
  display: none;
}

.player-error {
  position: absolute;
  inset: auto 12px calc(110px + var(--safe-bottom)) 12px;
  z-index: 2;
  padding: 12px 14px;
  border-radius: 14px;
  background: rgba(24, 24, 24, 0.84);
  color: #fff;
  text-align: center;
}

.icon-btn,
.nav-btn {
  min-width: 44px;
  min-height: 44px;
  width: 44px;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.18);
  color: #fff;
  cursor: pointer;
  box-shadow: none;
  transition: opacity 200ms cubic-bezier(0.22, 1, 0.36, 1), transform 200ms cubic-bezier(0.22, 1, 0.36, 1),
    background-color 220ms cubic-bezier(0.22, 1, 0.36, 1);
}

.close-btn {
  display: none;
}

.counter {
  position: absolute;
  top: calc(12px + var(--safe-top));
  right: calc(14px + var(--safe-right));
  z-index: 3;
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.18);
  font-size: 13px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  opacity: 0.72;
  transition: opacity 200ms cubic-bezier(0.22, 1, 0.36, 1), transform 200ms cubic-bezier(0.22, 1, 0.36, 1);
}

.nav-btn {
  flex: 0 0 auto;
  font-size: 0;
  line-height: 1;
  opacity: 0.72;
}

.prev-btn::before,
.next-btn::before {
  font-size: 22px;
}

.prev-btn::before {
  content: "‹";
}

.next-btn::before {
  content: "›";
}

.nav-btn:hover,
.nav-btn:focus-visible,
.counter:hover,
.counter:focus-visible {
  opacity: 1;
}

.viewer.controls-hidden .counter,
.viewer.controls-hidden .nav-btn {
  opacity: 0;
  pointer-events: none;
}

.viewer.controls-hidden .counter,
.viewer.controls-hidden .close-btn {
  transform: translateY(-6px);
}

.viewer.controls-hidden .prev-btn {
  transform: translateX(-8px);
}

.viewer.controls-hidden .next-btn {
  transform: translateX(8px);
}

@media (hover: hover) and (pointer: fine) {
  .card:hover .card-surface {
    transform: scale(1.01);
  }

  .card:hover .card-surface::after {
    opacity: 1;
  }

  .card:hover img {
    filter: brightness(0.94);
    transform: scale(1.005);
  }

  .card:hover .card-play {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
  }
}

.card:focus-visible .card-surface {
  box-shadow: 0 0 0 2px #f5f5f7, 0 0 0 4px rgba(0, 0, 0, 0.28);
}

.card:focus-visible .card-surface::after {
  opacity: 0;
}

.card:active .card-play,
body.viewer-open .card-play {
  opacity: 0;
  transform: translate(-50%, -50%) scale(0.9);
}

@media (min-width: 768px) {
  .gallery {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }

  .viewer-stage {
    display: grid;
    grid-template-columns: clamp(72px, 10vw, 120px) minmax(0, auto) clamp(72px, 10vw, 120px);
    gap: 20px;
    padding: calc(64px + var(--safe-top)) calc(72px + var(--safe-right)) calc(24px + var(--safe-bottom))
      calc(72px + var(--safe-left));
  }

  .viewer-frame {
    grid-column: 2;
    width: auto;
    height: min(820px, calc(100dvh - 96px));
    max-width: calc(100vw - 200px);
    padding: 0;
  }
  .nav-btn {
    position: relative;
    z-index: 2;
    transform: none;
    align-self: center;
  }

  .prev-btn {
    grid-column: 1;
  }

  .next-btn {
    grid-column: 3;
  }
}

@media (min-width: 1100px) {
  .gallery {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
  }

  .viewer-stage {
    gap: 24px;
  }
}

@media (min-width: 1350px) {
  .gallery {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    max-width: 1320px;
    gap: 16px;
  }
}

@media (max-width: 767px) {
  .header {
    padding-top: calc(20px + var(--safe-top));
  }

  .hero-subtitle {
    margin-top: 10px;
    font-size: 17px;
  }

  .hero-micro {
    margin-top: 8px;
  }

  .viewer-stage {
    gap: 0;
    padding-top: var(--safe-top);
    padding-right: var(--safe-right);
    padding-bottom: var(--safe-bottom);
    padding-left: var(--safe-left);
  }

  .viewer-frame {
    width: min(100%, calc(100vw - 24px));
    height: auto;
    max-width: calc(100vw - 24px);
    max-height: calc(100dvh - 24px - var(--safe-top) - var(--safe-bottom));
    border-radius: 12px;
  }

  .viewer-frame video {
    width: 100%;
    height: 100%;
    max-width: 100%;
    max-height: 100%;
  }

  .nav-btn {
    position: absolute;
    top: 50%;
    width: 44px;
    min-width: 44px;
    padding: 0;
    font-size: 0;
    line-height: 1;
    transform: translateY(-50%);
    z-index: 3;
  }

  .prev-btn::before,
  .next-btn::before {
    font-size: 22px;
  }

  .prev-btn::before {
    content: "‹";
  }

  .next-btn::before {
    content: "›";
  }

  .prev-btn {
    left: calc(6px + var(--safe-left));
  }

  .next-btn {
    right: calc(6px + var(--safe-right));
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto;
  }

  .auth,
  .shell,
  .auth-input,
  .auth-submit,
  .logout-btn {
    transition: none;
  }

  .auth-card,
  .auth-card.is-shaking,
  .auth-spinner {
    animation: none;
  }

  .hero-copy,
  .card-surface,
  .card-surface::after,
  .card img,
  .card-play,
  .viewer,
  .viewer-backdrop,
  .viewer-stage,
  .viewer-chrome,
  .viewer-frame,
  .viewer-frame video,
  .icon-btn,
  .nav-btn,
  .counter {
    transition: none;
  }
}