:root {
  --bg: #f2efe8;
  --panel: rgba(255, 252, 245, 0.78);
  --text: #1f2520;
  --muted: #5b635c;
  --accent: #0d6b50;
  --accent-soft: #cde6db;
  --border: rgba(31, 37, 32, 0.1);
  --shadow: 0 24px 60px rgba(38, 40, 33, 0.14);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(13, 107, 80, 0.15), transparent 30%),
    radial-gradient(circle at bottom right, rgba(216, 130, 67, 0.22), transparent 30%),
    linear-gradient(160deg, #f8f4ed 0%, #ece6db 100%);
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
}

a {
  color: inherit;
}

button,
.link-button {
  border: 0;
  border-radius: 999px;
  padding: 0.9rem 1.3rem;
  background: var(--accent);
  color: white;
  cursor: pointer;
  text-decoration: none;
  font: inherit;
}

button.secondary,
.link-button.secondary {
  background: var(--accent-soft);
  color: var(--text);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

.landing,
.room-shell {
  padding: 2rem;
}

.shell,
.room-shell {
  max-width: 1200px;
  margin: 0 auto;
}

.hero-card,
.control-card,
.video-card,
.side-card {
  backdrop-filter: blur(14px);
  background: var(--panel);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.hero-card {
  padding: 3rem;
  border-radius: 32px;
  margin-top: 8vh;
}

.hero-card h1,
.room-header h1 {
  margin: 0.2rem 0 1rem;
  font-family: "IBM Plex Serif", Georgia, serif;
  font-size: clamp(2.5rem, 6vw, 4.6rem);
  line-height: 0.95;
}

.hero-card p,
.side-card h2 {
  margin-top: 0;
}

.eyebrow {
  margin: 0;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  font-size: 0.78rem;
}

.lede {
  max-width: 56rem;
  color: var(--muted);
  font-size: 1.1rem;
  line-height: 1.6;
}

.room-form,
.actions,
.role-grid,
.header-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.room-form {
  margin-top: 2rem;
}

.field {
  display: grid;
  gap: 0.45rem;
  min-width: min(100%, 420px);
}

.field input {
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 1rem 1.1rem;
  background: rgba(255, 255, 255, 0.8);
  font: inherit;
}

.checkbox-field {
  min-width: auto;
}

.checkbox-field label {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.checkbox-field input[type="checkbox"] {
  width: 1.1rem;
  height: 1.1rem;
}

.meta {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-top: 1.25rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.room-header {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 1rem;
  margin-bottom: 1rem;
}

.control-card {
  padding: 1.2rem;
  border-radius: 24px;
  margin-bottom: 1rem;
}

.status {
  margin: 0.8rem 0 0;
  color: var(--muted);
}

.layout {
  display: grid;
  grid-template-columns: minmax(0, 2.3fr) minmax(300px, 1fr);
  gap: 1rem;
}

.video-card,
.side-card {
  border-radius: 28px;
  padding: 1rem;
}

.video-card {
  display: grid;
  gap: 1rem;
}

video {
  width: 100%;
  min-height: 240px;
  background: #111;
  border-radius: 18px;
}

#local-preview {
  min-height: 140px;
  max-width: 360px;
  justify-self: end;
}

.notes {
  padding-left: 1.2rem;
  color: var(--muted);
}

.participants {
  display: grid;
  gap: 0.8rem;
  margin-bottom: 1rem;
}

.participant-card {
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 0.9rem;
  background: rgba(255, 255, 255, 0.65);
}

.participant-title {
  font-weight: 600;
}

.participant-role,
.participant-meta,
.participant-empty {
  color: var(--muted);
  font-size: 0.92rem;
}

.participant-mono {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.84rem;
  color: var(--muted);
  word-break: break-all;
}

.participant-actions {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-top: 0.75rem;
}

.log {
  min-height: 260px;
  padding: 1rem;
  overflow: auto;
  border-radius: 18px;
  background: rgba(29, 33, 31, 0.92);
  color: #c8ffd8;
}

[hidden] {
  display: none !important;
}

@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
  }

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

  .landing,
  .room-shell {
    padding: 1rem;
  }

  .hero-card {
    padding: 1.4rem;
    border-radius: 24px;
  }
}