linkra/frontend/src/styles.css

:root {
  --bg: #0c1222;
  --bg-deep: #060910;
  --card: #111827;
  --line: #243041;
  --text: #f8fafc;
  --muted: #94a3b8;
  --primary: #2563eb;
  --danger: #dc2626;
  --success: #22c55e;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(ellipse 110% 75% at 50% -12%, rgba(37, 99, 235, 0.2), transparent 52%),
    linear-gradient(168deg, var(--bg-deep) 0%, var(--bg) 44%, #0f172a 100%);
}

a {
  color: inherit;
}

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 32px 16px;
}

.container.wide {
  max-width: 1680px;
}

.home-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.home-grid {
  width: 100%;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 440px);
  gap: 48px;
  align-items: center;
}

.card {
  background: rgba(17, 24, 39, 0.96);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 24px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
}

h1,
h2 {
  margin-top: 0;
}

.muted {
  color: var(--muted);
  line-height: 1.55;
}

.home-hero-lead {
  max-width: 44ch;
}

.home-features {
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
  color: var(--muted);
}

.home-features li {
  position: relative;
  padding-left: 22px;
}

.home-features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--primary);
}

.home-card-header,
.meeting-topbar,
.row {
  display: flex;
  gap: 12px;
  align-items: center;
}

.home-card-header,
.meeting-topbar {
  justify-content: space-between;
}

.centered {
  justify-content: center;
}

.stack {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

input {
  width: 100%;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #0b1220;
  color: white;
  font: inherit;
}

input[type='range'] {
  padding: 0;
  accent-color: var(--primary);
}

.btn,
.icon-btn,
.toggle-btn {
  border: 0;
  border-radius: 12px;
  padding: 12px 16px;
  cursor: pointer;
  font: inherit;
}

.btn.primary {
  background: var(--primary);
  color: white;
}

.btn.secondary,
.toggle-btn {
  background: #f8fafc;
  color: #111827;
}

.btn.danger {
  background: var(--danger);
  color: white;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.link-btn {
  display: inline-flex;
  justify-content: center;
  text-decoration: none;
}

.icon-btn {
  min-width: 50px;
  min-height: 50px;
  background: #1f2937;
  color: white;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.icon-btn.small {
  min-width: 44px;
  min-height: 44px;
  padding: 0;
}

.icon-btn.is-off {
  background: #3a1111;
  color: #fecaca;
}

.toggle-btn.active {
  background: #13274f;
  color: white;
  border: 1px solid #355cae;
}

.toggle-btn.inactive {
  background: #1f2937;
  color: #cbd5e1;
  border: 1px solid #4b5563;
}

.toggle-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.control-icon {
  width: 24px;
  height: 24px;
  object-fit: contain;
  display: block;
}

.icon-btn .control-icon {
  width: 26px;
  height: 26px;
}

.home-actions {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
}

.settings-wrap {
  position: relative;
}

.settings-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  z-index: 20;
  width: 260px;
  padding: 14px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(17, 24, 39, 0.98);
}

.checkbox-line {
  display: flex;
  gap: 10px;
  align-items: center;
}

.checkbox-line input {
  width: 18px;
  height: 18px;
}

.qr-box {
  display: inline-flex;
  padding: 12px;
  border-radius: 14px;
  background: white;
}

.toast-stack {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 1000;
  display: grid;
  gap: 10px;
  max-width: min(420px, calc(100vw - 32px));
}

.toast {
  padding: 12px 16px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(17, 24, 39, 0.96);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
}

.toast.success {
  border-color: rgba(34, 197, 94, 0.5);
}

.toast.error {
  border-color: rgba(239, 68, 68, 0.55);
}

.error-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.error-card {
  max-width: 500px;
  text-align: center;
}

.error-code {
  margin: 0 0 12px;
  color: var(--muted);
  letter-spacing: 0.12em;
}

.join-card {
  margin-bottom: 20px;
}

.prejoin-layout {
  display: grid;
  grid-template-columns: minmax(320px, 1.2fr) minmax(300px, 0.9fr);
  gap: 20px;
}

.preview-stage {
  min-height: 420px;
  border-radius: 18px;
  overflow: hidden;
  background: #020617;
  border: 1px solid rgba(148, 163, 184, 0.16);
  display: flex;
  align-items: center;
  justify-content: center;
}

.prejoin-preview-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scaleX(-1);
}

.preview-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.meeting-card {
  margin-bottom: 20px;
}

.meeting-title {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.meeting-room-name {
  margin-bottom: 0;
}

.meeting-controls {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
}

.meeting-timer {
  min-width: 74px;
  text-align: center;
  font-size: 18px;
  font-weight: 700;
  color: #93c5fd;
}

.videos {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.video-tile {
  background: #0b1220;
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
  min-height: 360px;
}

.video-tile.speaking {
  border-color: var(--success);
  box-shadow: 0 0 0 2px rgba(34, 197, 94, 0.35);
}

.video-label-row {
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
}

.participant-volume {
  display: grid;
  gap: 8px;
  padding: 10px 12px 12px;
  border-bottom: 1px solid var(--line);
  background: rgba(15, 23, 42, 0.72);
  color: var(--muted);
  font-size: 13px;
}

.screen-slot {
  height: 260px;
  background: #020617;
}

.media-slot {
  min-height: 320px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #020617;
}

.media-slot video,
.screen-slot video {
  width: 100%;
  height: 100%;
  min-height: inherit;
  object-fit: cover;
}

.screen-share-video {
  object-fit: contain !important;
}

.local-video {
  transform: scaleX(-1);
}

.avatar-placeholder {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: linear-gradient(135deg, #1d4ed8, #3b82f6);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 44px;
  font-weight: 800;
}

.hidden-audio {
  width: 0;
  height: 0;
  opacity: 0;
}

.chat-card {
  margin-bottom: 96px;
}

.chat-messages {
  min-height: 260px;
  max-height: 420px;
  overflow-y: auto;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #0b1220;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.chat-message {
  background: #111827;
  border: 1px solid #223046;
  border-radius: 12px;
  padding: 10px 12px;
}

.chat-message.own {
  background: #102143;
  border-color: #274b8f;
}

.chat-author {
  font-size: 12px;
  color: #93c5fd;
  margin-bottom: 6px;
  font-weight: 700;
}

.chat-text {
  word-break: break-word;
}

.chat-form {
  margin-top: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.chat-form input[type='text'] {
  min-width: 220px;
  flex: 1 1 260px;
}

.hidden-file-input {
  display: none;
}

.attachment-btn {
  flex: 0 0 auto;
}

.file-link {
  color: #93c5fd;
}

.call-bottom-actions {
  position: fixed;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  z-index: 50;
  display: flex;
  gap: 12px;
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(11, 18, 32, 0.96);
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.22);
}

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

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

@media (max-width: 640px) {
  .container {
    padding: 20px 12px;
  }

  .home-actions,
  .row {
    grid-template-columns: 1fr;
    flex-direction: column;
    align-items: stretch;
  }

  .card {
    padding: 18px 14px;
  }

  .preview-stage {
    min-height: 280px;
  }

  .call-bottom-actions {
    width: calc(100% - 24px);
    flex-direction: column;
  }
}