:root {
  --bg: #0f1115;
  --bg-soft: rgba(24, 27, 34, 0.82);
  --bg-solid: #181b22;
  --panel: rgba(24, 27, 34, 0.92);
  --line: rgba(255, 255, 255, 0.08);
  --text: #f5f7fb;
  --muted: #9ca3af;
  --accent: #ff4f7b;
  --accent-strong: #ff2f67;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --font: "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  background:
    radial-gradient(circle at top left, rgba(255, 79, 123, 0.18), transparent 35%),
    radial-gradient(circle at top right, rgba(97, 143, 255, 0.12), transparent 30%),
    linear-gradient(180deg, #11141a 0%, #0f1115 55%, #0b0d11 100%);
  color: var(--text);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.6), transparent 80%);
  opacity: 0.5;
}

a {
  color: inherit;
}

.page {
  min-height: 100vh;
}

.shell {
  width: min(960px, calc(100vw - 24px));
  margin: 0 auto;
}

.hero-shell {
  display: grid;
  place-items: center;
  min-height: 100vh;
  padding: 24px 0;
}

.hero-card,
.panel,
.error-card,
.join-card {
  position: relative;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  backdrop-filter: blur(20px);
}

.hero-card {
  width: min(680px, 100%);
  border-radius: var(--radius-xl);
  padding: 28px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 0.84rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin: 0;
}

.hero-card h1 {
  font-size: clamp(2.5rem, 7vw, 4.8rem);
  line-height: 0.95;
  letter-spacing: -0.05em;
}

.lead {
  margin-top: 12px;
  color: var(--muted);
  font-size: 1.05rem;
}

.stack-form,
.join-strip {
  display: grid;
  gap: 14px;
}

.card-form {
  margin-top: 28px;
}

label {
  display: grid;
  gap: 8px;
}

label span {
  color: var(--muted);
  font-size: 0.9rem;
}

input,
textarea {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(8, 10, 14, 0.72);
  color: var(--text);
  border-radius: 16px;
  padding: 16px 18px;
  font: inherit;
  outline: none;
}

input:focus,
textarea:focus {
  border-color: rgba(255, 79, 123, 0.55);
  box-shadow: 0 0 0 4px rgba(255, 79, 123, 0.15);
}

.primary-button,
.ghost-button,
.pill-button,
.host-controls button {
  border: 0;
  border-radius: 999px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.18s ease, opacity 0.18s ease, background 0.18s ease;
}

.primary-button {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: white;
  padding: 16px 22px;
  box-shadow: 0 16px 34px rgba(255, 79, 123, 0.28);
}

.ghost-button,
.pill-button,
.host-controls button {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
}

.primary-button:hover,
.ghost-button:hover,
.pill-button:hover,
.host-controls button:hover {
  transform: translateY(-1px);
}

.form-note,
.status-text {
  color: var(--muted);
  font-size: 0.92rem;
}

.join-strip {
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  margin-top: 18px;
}

.join-strip label {
  margin: 0;
}

.join-strip input {
  min-width: 0;
}

.room-shell {
  width: min(1180px, calc(100vw - 16px));
  margin: 0 auto;
  padding: 12px 0 110px;
}

.room-topbar {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  align-items: flex-end;
  padding: 8px 4px 14px;
}

.room-title {
  font-size: clamp(1.2rem, 4vw, 2rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
}

.room-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
}

.pill,
.tiny-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  font-size: 0.88rem;
}

.pill-button {
  padding: 10px 14px;
}

.player-wrap {
  position: relative;
}

.video-frame {
  position: relative;
  overflow: hidden;
  border-radius: 26px;
  border: 1px solid var(--line);
  background: #06070a;
  box-shadow: var(--shadow);
  aspect-ratio: 16 / 9;
}

.player,
.player iframe {
  width: 100%;
  height: 100%;
}

.player {
  position: relative;
  z-index: 1;
}

.barrage-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 2;
}

.barrage-item {
  position: absolute;
  left: 100%;
  max-width: 88%;
  color: rgba(255, 255, 255, 0.98);
  font-size: clamp(16px, 2.8vw, 24px);
  font-weight: 800;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.9);
  white-space: nowrap;
  animation: barrage-flow var(--barrage-duration, 8.5s) linear forwards;
  opacity: 0.95;
  z-index: 3;
  will-change: transform, opacity;
}

.barrage-size-small {
  font-size: clamp(12px, 2vw, 16px);
  opacity: 0.88;
}

.barrage-size-medium {
  font-size: clamp(16px, 2.8vw, 24px);
}

.barrage-size-large {
  font-size: clamp(20px, 3.4vw, 30px);
  font-weight: 900;
  text-shadow: 0 3px 10px rgba(0, 0, 0, 0.95);
}

.barrage-size-xlarge {
  font-size: clamp(24px, 4.4vw, 38px);
  font-weight: 900;
  text-shadow: 0 3px 12px rgba(0, 0, 0, 0.96);
}

.barrage-size-xxlarge {
  font-size: clamp(30px, 5.2vw, 48px);
  font-weight: 900;
  letter-spacing: -0.03em;
  text-shadow: 0 4px 14px rgba(0, 0, 0, 0.98);
}

.barrage-color-white {
  color: rgba(255, 255, 255, 0.98);
}

.barrage-color-pink {
  color: #ff8ab0;
}

.barrage-color-yellow {
  color: #ffe36b;
}

.barrage-color-cyan {
  color: #88e8ff;
}

.room-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.42fr) minmax(0, 0.58fr);
  gap: 14px;
  margin-top: 14px;
}

.panel,
.error-card {
  border-radius: var(--radius-lg);
  padding: 18px;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.people-list,
.comments-list {
  display: grid;
  gap: 10px;
}

.people-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.person-chip,
.comment-card {
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.person-chip {
  padding: 12px 14px;
}

.person-chip small,
.comment-meta {
  color: var(--muted);
  font-size: 0.82rem;
}

.comment-card {
  padding: 14px;
}

.comment-body {
  margin-top: 6px;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-word;
}

.composer {
  position: fixed;
  left: 50%;
  bottom: max(12px, env(safe-area-inset-bottom));
  transform: translateX(-50%);
  width: min(1180px, calc(100vw - 16px));
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  padding: 12px;
  background: rgba(12, 14, 18, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 22px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.composer-field textarea {
  resize: none;
  min-height: 54px;
  max-height: 120px;
}

.composer-button {
  align-self: stretch;
  padding-inline: 18px;
}

.host-controls {
  position: fixed;
  right: 12px;
  top: 12px;
  z-index: 25;
  display: grid;
  gap: 10px;
  padding: 12px;
  border-radius: 20px;
  background: rgba(12, 14, 18, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.host-controls button {
  padding: 12px 16px;
}

.join-overlay {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 18px;
  background: rgba(5, 6, 9, 0.72);
  z-index: 30;
}

.join-overlay.hidden,
.hidden {
  display: none !important;
}

.join-card {
  width: min(460px, 100%);
  border-radius: 24px;
  padding: 24px;
}

.inline-button {
  display: inline-flex;
  margin-top: 16px;
  text-decoration: none;
}

.error-card {
  margin-top: 18px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

@keyframes barrage-flow {
  0% {
    transform: translate3d(0, 0, 0);
    opacity: 0.98;
  }
  100% {
    transform: translate3d(var(--barrage-drift, -180vw), 0, 0);
    opacity: 0.82;
  }
}

@media (max-width: 920px) {
  .room-grid {
    grid-template-columns: 1fr;
  }

  .room-topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .composer {
    grid-template-columns: 1fr;
  }

  .composer-button {
    width: 100%;
  }
}

@media (max-width: 640px) {
  .room-shell {
    width: min(100vw, calc(100vw - 12px));
    padding: 8px 0 88px;
  }

  .room-topbar {
    padding: 4px 2px 8px;
    gap: 8px;
  }

  .room-title {
    font-size: clamp(1.05rem, 3.6vw, 1.35rem);
  }

  .hero-card {
    padding: 22px;
  }

  .join-strip {
    grid-template-columns: 1fr;
  }

  .panel,
  .error-card {
    padding: 12px;
  }

  .room-grid {
    gap: 10px;
    margin-top: 10px;
    margin-bottom: 14px;
  }

  .comment-panel {
    order: 2;
    max-height: 30vh;
    overflow: hidden;
  }

  .panel:first-of-type {
    order: 1;
  }

  .panel-head {
    margin-bottom: 8px;
  }

  .people-list {
    max-height: 13vh;
    overflow-y: auto;
  }

  .comments-list {
    max-height: 20vh;
    overflow-y: auto;
  }

  .video-frame {
    height: clamp(185px, 30vh, 260px);
  }

  .barrage-item {
    left: 100%;
    right: auto;
    max-width: 72%;
    font-size: clamp(11px, 2.8vw, 16px);
  }

  .barrage-size-xlarge {
    font-size: clamp(18px, 4.6vw, 28px);
  }

  .barrage-size-xxlarge {
    font-size: clamp(22px, 5.4vw, 34px);
  }

  .barrage-layer {
    padding-top: 14%;
  }

  .host-controls {
    right: 8px;
    left: 8px;
    top: auto;
    bottom: calc(80px + env(safe-area-inset-bottom));
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 8px;
    padding: 10px;
  }

  .host-controls button {
    padding: 10px 8px;
    border-radius: 14px;
    font-size: 0.76rem;
  }
}