:root {
  color-scheme: dark;
  --bg: #070a10;
  --panel: rgba(16, 21, 29, 0.92);
  --panel-soft: rgba(255, 255, 255, 0.045);
  --line: rgba(255, 255, 255, 0.11);
  --text: rgba(255, 255, 255, 0.94);
  --muted: rgba(255, 255, 255, 0.58);
  --faint: rgba(255, 255, 255, 0.36);
  --gold: #d4af37;
  --gold-2: #f1d36b;
  --green: #6ee7b7;
  --red: #f87171;
  --blue: #7dd3fc;
  --radius: 10px;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  overflow-x: hidden;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.045), transparent 230px),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.028) 0 1px, transparent 1px 80px),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.022) 0 1px, transparent 1px 80px),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
input {
  font: inherit;
}

a {
  color: inherit;
}

.app-shell {
  position: relative;
  min-height: 100vh;
  isolation: isolate;
}

.app-shell::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(ellipse at 20% 0%, rgba(212, 175, 55, 0.16), transparent 44%),
    linear-gradient(125deg, rgba(125, 211, 252, 0.06), transparent 30%),
    linear-gradient(315deg, rgba(110, 231, 183, 0.055), transparent 35%);
  animation: lightSweep 14s ease-in-out infinite alternate;
}

.app-shell::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: linear-gradient(120deg, transparent, rgba(255, 255, 255, 0.06), transparent);
  transform: translateX(-120%);
  animation: sheen 9s linear infinite;
}

.page {
  width: 100%;
  margin: 0 auto;
  padding: 28px 24px 56px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0 26px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid rgba(212, 175, 55, 0.35);
  border-radius: var(--radius);
  background: rgba(212, 175, 55, 0.12);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.brand-mark svg {
  width: 24px;
  height: 24px;
}

.brand-title {
  display: block;
  font-size: 14px;
  font-weight: 760;
}

.brand-subtitle {
  display: block;
  margin-top: 2px;
  color: var(--muted);
  font-size: 12px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(360px, 1.12fr);
  gap: 22px;
  align-items: center;
  min-height: calc(100vh - 150px);
}

.panel {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: 0 24px 90px rgba(0, 0, 0, 0.35);
}

.panel::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: inherit;
  background: linear-gradient(120deg, rgba(212, 175, 55, 0.15), transparent 28%, rgba(125, 211, 252, 0.08));
  opacity: 0.78;
}

.panel > * {
  position: relative;
}

.copy-block {
  animation: riseIn 0.7s ease both;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid rgba(212, 175, 55, 0.28);
  border-radius: 999px;
  background: rgba(212, 175, 55, 0.1);
  padding: 7px 11px;
  color: var(--gold-2);
  font-size: 12px;
  font-weight: 760;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.eyebrow .pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: var(--green);
  box-shadow: 0 0 0 0 rgba(110, 231, 183, 0.55);
  animation: pulseRing 1.5s ease-out infinite;
}

.topbar-badge {
  flex: 0 0 auto;
}

h1,
h2,
h3,
p {
  margin: 0;
}

.headline {
  margin-top: 20px;
  font-size: clamp(36px, 7vw, 76px);
  line-height: 0.95;
  font-weight: 820;
  letter-spacing: 0;
}

.lead {
  max-width: 580px;
  margin-top: 22px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.75;
}

.student-chip {
  display: flex;
  align-items: center;
  gap: 12px;
  width: fit-content;
  margin-top: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.055);
  padding: 12px;
  animation: floatSmall 3.8s ease-in-out infinite;
}

.avatar {
  display: grid;
  width: 46px;
  height: 46px;
  place-items: center;
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(212, 175, 55, 0.26), rgba(255, 255, 255, 0.07));
  color: var(--gold-2);
  font-weight: 800;
}

.chip-label {
  color: var(--faint);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.chip-value {
  margin-top: 2px;
  font-size: 15px;
  font-weight: 760;
}

.recorder {
  padding: 16px;
  animation: riseIn 0.7s 0.12s ease both;
}

.camera-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  border: 0;
  border-radius: 0;
  background: #000;
  box-shadow: none;
  padding: 0;
  animation: none;
}

.camera-overlay::before {
  display: none;
}

.camera-overlay .camera-frame {
  position: absolute;
  inset: 0;
  min-height: 0;
  border: 0;
  border-radius: 0;
}

.camera-overlay .camera-frame::before {
  display: none;
}

.camera-overlay .camera-video {
  min-height: 0;
  height: 100vh;
  height: 100dvh;
  transform: scaleX(-1);
}

.camera-top-controls {
  position: absolute;
  top: calc(14px + env(safe-area-inset-top));
  right: 14px;
  left: 14px;
  z-index: 4;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 10px;
}

.camera-title {
  justify-self: center;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.38);
  color: rgba(255, 255, 255, 0.92);
  padding: 9px 13px;
  font-size: 13px;
  font-weight: 800;
  backdrop-filter: blur(12px);
}

.camera-round-btn,
.zoom-btn {
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.42);
  color: rgba(255, 255, 255, 0.92);
  cursor: pointer;
  font-weight: 800;
  backdrop-filter: blur(12px);
}

.camera-round-btn {
  min-height: 40px;
  padding: 9px 13px;
}

.zoom-controls {
  position: absolute;
  right: 14px;
  bottom: calc(104px + env(safe-area-inset-bottom));
  left: 14px;
  z-index: 4;
  display: flex;
  justify-content: center;
  gap: 8px;
}

.zoom-btn {
  width: 46px;
  height: 46px;
  color: var(--gold-2);
}

.zoom-btn.active {
  background: var(--gold-2);
  color: #070a10;
}

.camera-round-btn:disabled,
.zoom-btn:disabled {
  cursor: not-allowed;
  opacity: 0.38;
}

.camera-overlay .actions {
  position: absolute;
  right: 18px;
  bottom: calc(18px + env(safe-area-inset-bottom));
  left: 18px;
  z-index: 4;
  margin-top: 0;
  justify-content: center;
}

.camera-overlay .actions.two {
  grid-template-columns: minmax(0, 128px) minmax(0, 152px);
}

.camera-overlay .btn {
  min-height: 36px;
  padding: 7px 9px;
  font-size: 12px;
  border-radius: 999px;
}

.camera-overlay .btn.primary {
  min-height: 36px;
  font-size: 12px;
}

.camera-frame {
  position: relative;
  display: grid;
  min-height: 420px;
  overflow: hidden;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.055), transparent),
    #020409;
}

.camera-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(0deg, transparent 0 12px, rgba(255, 255, 255, 0.03) 12px 13px);
  opacity: 0.35;
  animation: scanLines 1.4s linear infinite;
}

.camera-frame.recording {
  border-color: rgba(248, 113, 113, 0.5);
  box-shadow: 0 0 0 1px rgba(248, 113, 113, 0.2), 0 0 45px rgba(248, 113, 113, 0.12);
}

.live-camera {
  background: #000;
}

.camera-video {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  min-height: 420px;
  object-fit: cover;
}

.quality-badge,
.recording-pill {
  position: absolute;
  right: 14px;
  bottom: 14px;
  z-index: 2;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  background: rgba(7, 10, 16, 0.78);
  color: rgba(255, 255, 255, 0.88);
  padding: 8px 11px;
  font-size: 12px;
  font-weight: 760;
  backdrop-filter: blur(12px);
}

.camera-overlay .quality-badge {
  bottom: calc(160px + env(safe-area-inset-bottom));
}

.recording-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #fecaca;
}

.recording-pill span {
  width: 9px;
  height: 9px;
  border-radius: 999px;
  background: #ef4444;
  box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.55);
  animation: pulseRing 1.2s ease-out infinite;
}

.preview-video {
  width: 100%;
  max-height: 58vh;
  border-radius: var(--radius);
  background: #000;
}

.empty-camera {
  position: relative;
  z-index: 1;
  max-width: 360px;
  padding: 32px;
  text-align: center;
}

.big-icon {
  display: grid;
  width: 76px;
  height: 76px;
  margin: 0 auto 18px;
  place-items: center;
  border: 1px solid rgba(212, 175, 55, 0.32);
  border-radius: 18px;
  background: rgba(212, 175, 55, 0.12);
  color: var(--gold-2);
  animation: breathe 2.6s ease-in-out infinite;
}

.empty-camera h2 {
  font-size: 22px;
}

.empty-camera p {
  margin-top: 10px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

.actions {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.actions.two {
  grid-template-columns: 1fr 1fr;
}

.btn {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  gap: 9px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.07);
  color: var(--text);
  cursor: pointer;
  padding: 10px 14px;
  text-decoration: none;
  transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease, box-shadow 0.18s ease;
}

.btn:hover {
  transform: translateY(-1px);
  border-color: rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.105);
}

.btn:disabled {
  cursor: not-allowed;
  opacity: 0.55;
  transform: none;
}

.btn.primary {
  border-color: rgba(212, 175, 55, 0.72);
  background: linear-gradient(135deg, var(--gold), var(--gold-2));
  color: #070a10;
  font-weight: 800;
  box-shadow: 0 12px 35px rgba(212, 175, 55, 0.18);
}

.btn.danger {
  border-color: rgba(248, 113, 113, 0.4);
  background: rgba(248, 113, 113, 0.13);
  color: #fecaca;
}

.status-strip {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-top: 14px;
  border: 1px solid rgba(248, 113, 113, 0.32);
  border-radius: var(--radius);
  background: rgba(248, 113, 113, 0.1);
  padding: 12px;
  color: #fecaca;
  font-size: 14px;
}

.success-card {
  display: grid;
  min-height: 440px;
  place-items: center;
  padding: 36px;
  text-align: center;
}

.success-card h2 {
  margin-top: 18px;
  font-size: 34px;
}

.success-card p {
  max-width: 480px;
  margin: 12px auto 0;
  color: var(--muted);
  line-height: 1.7;
}

.success-burst {
  position: relative;
  display: grid;
  width: 96px;
  height: 96px;
  place-items: center;
  border-radius: 24px;
  background: rgba(110, 231, 183, 0.12);
  color: var(--green);
}

.success-burst::before,
.success-burst::after {
  content: "";
  position: absolute;
  inset: -16px;
  border: 1px solid rgba(110, 231, 183, 0.34);
  border-radius: 32px;
  animation: successWave 1.8s ease-out infinite;
}

.success-burst::after {
  animation-delay: 0.45s;
}

.admin-layout {
  display: grid;
  gap: 18px;
}

.admin-header,
.section-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  padding: 18px;
}

.admin-title {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 820;
}

.muted {
  color: var(--muted);
}

.grid {
  display: grid;
  gap: 14px;
}

.class-grid {
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
}

.student-grid {
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

.video-grid {
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
}

.card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(16, 21, 29, 0.86);
  padding: 16px;
  transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
  animation: riseIn 0.45s ease both;
}

.card:hover {
  transform: translateY(-2px);
  border-color: rgba(212, 175, 55, 0.34);
  background: rgba(20, 27, 38, 0.94);
}

.card-button {
  width: 100%;
  text-align: left;
}

.card-kicker {
  color: var(--faint);
  font-size: 11px;
  font-weight: 760;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.card-title {
  margin-top: 8px;
  font-size: 20px;
  font-weight: 800;
}

.stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 16px;
}

.stat {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.04);
  padding: 10px;
}

.stat strong {
  display: block;
  font-size: 20px;
}

.stat span {
  display: block;
  margin-top: 2px;
  color: var(--faint);
  font-size: 11px;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 10px;
}

.field {
  display: grid;
  gap: 6px;
}

.field span {
  color: var(--faint);
  font-size: 11px;
  font-weight: 760;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.input {
  width: 100%;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  outline: 0;
  background: rgba(0, 0, 0, 0.22);
  color: var(--text);
  padding: 10px 12px;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.input:focus {
  border-color: rgba(212, 175, 55, 0.65);
  box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.14);
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.video-card {
  padding: 0;
}

.video-card video {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #000;
}

.video-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 12px;
}

.login-card {
  width: min(460px, 100%);
  margin: 9vh auto 0;
  padding: 22px;
}

.toast {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 50;
  max-width: min(420px, calc(100% - 36px));
  border: 1px solid rgba(212, 175, 55, 0.32);
  border-radius: var(--radius);
  background: rgba(16, 21, 29, 0.96);
  padding: 13px 14px;
  color: var(--text);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
  animation: toastIn 0.22s ease both;
}

.error-box {
  border: 1px solid rgba(248, 113, 113, 0.32);
  border-radius: var(--radius);
  background: rgba(248, 113, 113, 0.1);
  padding: 14px;
  color: #fecaca;
}

.empty-state {
  border: 1px dashed rgba(255, 255, 255, 0.18);
  border-radius: var(--radius);
  padding: 28px;
  color: var(--muted);
  text-align: center;
}

.hidden {
  display: none;
}

@keyframes lightSweep {
  from { filter: hue-rotate(0deg); transform: scale(1); }
  to { filter: hue-rotate(12deg); transform: scale(1.04); }
}

@keyframes sheen {
  0%, 36% { transform: translateX(-120%); }
  60%, 100% { transform: translateX(120%); }
}

@keyframes riseIn {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulseRing {
  to { box-shadow: 0 0 0 10px rgba(110, 231, 183, 0); }
}

@keyframes floatSmall {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

@keyframes breathe {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.04); }
}

@keyframes scanLines {
  from { transform: translateY(0); }
  to { transform: translateY(13px); }
}

@keyframes successWave {
  from { opacity: 0.9; transform: scale(0.82); }
  to { opacity: 0; transform: scale(1.35); }
}

@keyframes toastIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 900px) {
  .page {
    width: 100%;
    padding: 16px 12px 44px;
  }

  .topbar {
    gap: 10px;
    padding: 8px 0 14px;
  }

  .brand {
    min-width: 0;
  }

  .brand-mark {
    width: 36px;
    height: 36px;
  }

  .brand-title,
  .brand-subtitle {
    white-space: nowrap;
  }

  .topbar-badge {
    padding: 7px 9px;
    font-size: 10px;
    letter-spacing: 0;
    text-align: right;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .upload-page {
    gap: 12px;
    align-items: start;
  }

  .upload-page .copy-block {
    animation-duration: 0.45s;
  }

  .headline {
    font-size: clamp(34px, 12vw, 58px);
  }

  .upload-page .headline {
    margin-top: 0;
    font-size: clamp(30px, 10vw, 46px);
    line-height: 1;
  }

  .upload-page .lead {
    margin-top: 10px;
    font-size: 15px;
    line-height: 1.55;
  }

  .upload-page .recorder {
    padding: 10px;
  }

  .upload-page .camera-overlay {
    padding: 0;
  }

  .camera-frame,
  .camera-video {
    min-height: 330px;
  }

  .upload-page .camera-frame {
    min-height: 190px;
  }

  .upload-page .camera-video {
    min-height: 190px;
  }

  .upload-page .empty-camera {
    max-width: 320px;
    padding: 20px 18px;
  }

  .upload-page .big-icon {
    width: 58px;
    height: 58px;
    margin-bottom: 12px;
    border-radius: 14px;
  }

  .upload-page .empty-camera h2 {
    font-size: 19px;
  }

  .upload-page .empty-camera p {
    font-size: 13px;
    line-height: 1.45;
  }

  .upload-page .actions {
    margin-top: 10px;
  }

  .upload-page .btn.primary {
    min-height: 54px;
    font-size: 16px;
  }

  .upload-page .camera-overlay .actions.two {
    grid-template-columns: minmax(0, 122px) minmax(0, 146px);
    justify-content: center;
  }

  .upload-page .camera-overlay .btn,
  .upload-page .camera-overlay .btn.primary {
    min-height: 36px;
    padding: 7px 9px;
    font-size: 12px;
  }

  .upload-page .camera-overlay .zoom-controls {
    bottom: calc(104px + env(safe-area-inset-bottom));
  }

  .admin-header,
  .section-header {
    align-items: stretch;
    flex-direction: column;
  }

  .form-grid,
  .actions.two {
    grid-template-columns: 1fr;
  }
}