:root {
  --bg: #0c1222;
  --bg-deep: #060910;
  --card: #111827;
  --line: #243041;
  --text: #f8fafc;
  --muted: #94a3b8;
  --primary: #2563eb;
  --danger: #dc2626;
  --success: #22c55e;
  --warning: #ef4444;
}

* { box-sizing: border-box; }

html {
  background: var(--bg-deep);
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, Arial, sans-serif;
  color: var(--text);
  background-color: var(--bg-deep);
  background-image:
    radial-gradient(ellipse 110% 75% at 50% -12%, rgba(37, 99, 235, 0.2), transparent 52%),
    radial-gradient(ellipse 90% 55% at 92% 18%, rgba(59, 130, 246, 0.09), transparent 48%),
    radial-gradient(ellipse 75% 45% at 6% 55%, rgba(30, 64, 175, 0.11), transparent 52%),
    linear-gradient(168deg, var(--bg-deep) 0%, var(--bg) 38%, #131c2e 72%, #0f172a 100%);
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 16px;
}

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

.hidden {
  display: none !important;
}

.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);
}

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

.layout-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 20px;
  align-items: start;
}

.meeting-card {
  min-height: 620px;
  padding-top: 18px;
}

.chat-card {
  min-height: 620px;
  display: flex;
  flex-direction: column;
}

h1 {
  margin-top: 0;
  font-size: 28px;
}

h2 {
  margin-top: 0;
}

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

.btn {
  border: 0;
  border-radius: 12px;
  padding: 12px 16px;
  cursor: pointer;
  font-size: 15px;
}

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

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

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

.row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}

.gap-top {
  margin-top: 12px;
}

input[type="text"] {
  width: 100%;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #0b1220;
  color: white;
}


.result {
  margin-top: 18px;
}

.result label {
  display: block;
  margin-bottom: 8px;
}

.result .row {
  margin-bottom: 16px;
  align-items: stretch;
}

.result .row input[type="text"] {
  flex: 1 1 320px;
}

.result .row .btn {
  flex: 0 0 auto;
}

#room-title-input {
  margin: 8px 0 16px;
}

#create-call-btn {
  margin-bottom: 8px;
}

#room-title-result {
  margin: 0 0 16px;
}

#open-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-top: 4px;
}

.form-grid {
  display: grid;
  gap: 12px;
  margin: 16px 0;
}

label span {
  display: block;
  margin-bottom: 8px;
}

.status {
  margin: 14px 0 0;
  color: #cbd5e1;
}

.prejoin-media-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.toggle-btn {
  border: 1px solid var(--line);
  background: #111c33;
  color: white;
  border-radius: 14px;
  padding: 12px 14px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  min-height: 48px;
}

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

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

.icon-wrap {
  width: 22px;
  height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.icon {
  width: 22px;
  height: 22px;
  display: none;
  object-fit: contain;
}

.toggle-btn.active .icon-mic-on,
.toggle-btn.active .icon-cam-on {
  display: block;
}

.toggle-btn.inactive .icon-mic-off,
.toggle-btn.inactive .icon-cam-off {
  display: block;
}

.meeting-topbar {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.meeting-title-wrap {
  min-width: 0;
}

.meeting-title {
  font-size: 18px;
  font-weight: 700;
}

.meeting-room-name {
  color: var(--muted);
  font-size: 14px;
  margin-top: 4px;
  word-break: break-word;
}

.meeting-controls {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 10px;
  flex-wrap: wrap;
  width: 100%;
}

.icon-btn {
  width: 50px;
  height: 50px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: #1f2937;
  color: white;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.icon-btn .icon {
  display: none;
  width: 22px;
  height: 22px;
  object-fit: contain;
}

.icon-btn:not(.is-off) .icon-mic-on,
.icon-btn:not(.is-off) .icon-cam-on,
.icon-btn:not(.is-off) .icon-screen-on {
  display: block;
}

.icon-btn.is-off .icon-mic-off,
.icon-btn.is-off .icon-cam-off,
.icon-btn.is-off .icon-screen-off {
  display: block;
}

.icon-btn .icon-svg {
  display: none;
  width: 22px;
  height: 22px;
  color: #e2e8f0;
}

.icon-btn.is-off {
  border-color: #7f1d1d;
  background: #3a1111;
  color: #fecaca;
}

.meeting-timer {
  min-width: 74px;
  text-align: center;
  font-size: 18px;
  font-weight: 700;
  color: #93c5fd;
  padding: 0 6px;
}

.videos {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(460px, 1fr));
  gap: 20px;
}

.video-tile {
  background: #0b1220;
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
  min-height: 420px;
  display: flex;
  flex-direction: column;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

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

.video-tile.mic-muted {
  border-color: var(--warning);
  box-shadow: 0 0 0 2px rgba(239, 68, 68, 0.25);
}

.video-label-row {
  padding: 10px 12px;
  font-size: 14px;
  color: #cbd5e1;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.video-label {
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.participant-state-icons {
  display: flex;
  align-items: center;
  gap: 8px;
}

.state-icon {
  width: 18px;
  height: 18px;
  display: none;
}

.state-icon img {
  width: 18px;
  height: 18px;
  display: block;
  object-fit: contain;
}

.video-tile.mic-muted .state-mic-off {
  display: block;
}

.video-tile.cam-muted .state-cam-off {
  display: block;
}

.video-tile-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.screen-slot {
  display: none;
  position: relative;
  flex: 1 1 auto;
  min-height: 280px;
  background: #020617;
  overflow: hidden;
}

.video-tile.has-screen .screen-slot {
  display: flex;
  align-items: center;
  justify-content: center;
}

.video-tile.has-screen .media-slot {
  flex: 0 0 auto;
  height: 200px;
  min-height: 160px;
  max-height: 240px;
}

.screen-slot .screen-share-video {
  width: 100%;
  height: 100%;
  min-height: 260px;
  object-fit: contain;
  background: #000;
}

.media-slot {
  flex: 1 1 auto;
  min-height: 360px;
  height: 560px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #020617;
  position: relative;
  overflow: hidden;
}

.media-slot video {
  width: 100%;
  height: 100%;
  min-height: 360px;
  object-fit: cover;
}

.media-slot .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;
  letter-spacing: 0.02em;
  user-select: none;
}

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

.chat-title {
  margin-bottom: 16px;
}

.chat-messages {
  flex: 1;
  min-height: 260px;
  max-height: 620px;
  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 {
  font-size: 14px;
  line-height: 1.45;
  color: #f8fafc;
  word-break: break-word;
}

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

.chat-input-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 52px;
  gap: 10px;
  align-items: center;
  width: 100%;
}

.attachment-btn {
  width: 52px;
  height: 52px;
  min-width: 52px;
  border-radius: 16px;
  padding: 0;
}

#chat-input {
  min-width: 0;
  width: 100%;
  height: 52px;
}

#chat-send-btn {
  width: 100%;
  min-height: 52px;
}

.btn.secondary {
  background: #f8fafc;
  color: #111827;
  border: 1px solid #dbe4f0;
}

.call-actions-trigger {
  width: 100%;
  height: 1px;
  margin-top: 8px;
}

.call-bottom-actions {
  display: flex;
  gap: 12px;
  margin-top: 16px;
  padding: 16px;
  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);
  opacity: 0;
  transform: translateY(18px);
  pointer-events: none;
  transition: opacity 0.22s ease, transform 0.22s ease;
}

.call-bottom-actions.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.leave-bottom-btn,
.finish-call-btn {
  flex: 1 1 0;
  min-height: 52px;
  border-radius: 14px;
}

.leave-bottom-btn {
  background: #f8fafc;
  color: #111827;
  border: 1px solid #dbe4f0;
}

.finish-call-btn {
  background: var(--danger);
  color: #fff;
}

@media (max-width: 1200px) {
  .layout-grid {
    grid-template-columns: 1fr;
  }

  .chat-card {
    min-height: auto;
  }

  .chat-messages {
    max-height: 320px;
  }
}

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

  .media-slot {
    height: 460px;
    min-height: 320px;
  }

  .video-tile.has-screen .media-slot {
    height: 180px;
    min-height: 140px;
    max-height: 200px;
  }

  .screen-slot {
    min-height: 220px;
  }

  .video-tile {
    min-height: 360px;
  }
}

@media (max-width: 720px) {
  .result .row {
    flex-direction: column;
    gap: 14px;
  }

  .result .row .btn {
    width: 100%;
  }

  #open-link {
    margin-top: 8px;
  }

  .container {
    padding: 20px 12px;
  }

  h1 {
    font-size: 24px;
  }

  .chat-input-row {
    grid-template-columns: minmax(0, 1fr) 52px;
  }

  .prejoin-media-row {
    flex-direction: column;
  }

  .toggle-btn {
    width: 100%;
    justify-content: flex-start;
  }

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

  .meeting-controls {
    width: 100%;
    justify-content: flex-start;
  }

  .meeting-timer {
    order: 10;
    width: 100%;
    text-align: left;
    padding: 6px 0 0;
  }

  .media-slot {
    height: 420px;
    min-height: 300px;
  }

  .video-tile {
    min-height: 340px;
  }

  .call-bottom-actions {
    flex-direction: column;
    padding: 12px;
  }

  .leave-bottom-btn,
  .finish-call-btn {
    width: 100%;
  }
}


.connection-indicator {
  display: flex;
  gap: 4px;
  align-items: flex-end;
  height: 18px;
  padding: 0 6px;
}

.connection-indicator .bar {
  width: 4px;
  background: #64748b;
  border-radius: 2px;
  transition: 0.2s ease;
}

.connection-indicator .bar:nth-child(1) { height: 5px; }
.connection-indicator .bar:nth-child(2) { height: 8px; }
.connection-indicator .bar:nth-child(3) { height: 12px; }
.connection-indicator .bar:nth-child(4) { height: 16px; }

.connection-indicator.poor .bar:nth-child(1) {
  background: #ef4444;
}

.connection-indicator.good .bar:nth-child(-n+3) {
  background: #2563eb;
}

.connection-indicator.excellent .bar {
  background: #22c55e;
}
/* === Prejoin preview === */
.prejoin-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.prejoin-subtitle {
  margin: 10px 0 0;
}

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

.prejoin-preview-card,
.prejoin-controls-card {
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.88), rgba(17, 24, 39, 0.96));
  border: 1px solid rgba(59, 130, 246, 0.14);
  border-radius: 18px;
  padding: 18px;
}

.preview-stage {
  position: relative;
  min-height: 420px;
  border-radius: 18px;
  overflow: hidden;
  background:
    radial-gradient(circle at top right, rgba(37, 99, 235, 0.25), transparent 34%),
    linear-gradient(180deg, #0f172a, #111827);
  border: 1px solid rgba(148, 163, 184, 0.16);
}

.prejoin-preview-video,
.prejoin-preview-placeholder {
  width: 100%;
  height: 100%;
}

.prejoin-preview-video {
  object-fit: cover;
  transform: scaleX(-1);
  display: block;
}

.prejoin-preview-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 10px;
  padding: 24px;
  text-align: center;
}

.preview-avatar {
  width: 96px;
  height: 96px;
  border-radius: 999px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 36px;
  font-weight: 800;
  color: #eff6ff;
  background: linear-gradient(135deg, #2563eb, #1d4ed8 60%, #0f172a 100%);
  box-shadow: 0 18px 40px rgba(37, 99, 235, 0.35);
}

.preview-placeholder-title {
  font-size: 20px;
  font-weight: 700;
}

.preview-placeholder-text {
  color: var(--muted);
  max-width: 320px;
  line-height: 1.5;
}


.prejoin-controls-card {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.prejoin-controls-card .field-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.prejoin-audio-meter-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 16px;
  border-radius: 16px;
  background: rgba(15, 23, 42, 0.72);
  border: 1px solid rgba(148, 163, 184, 0.12);
}

.audio-meter-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-weight: 600;
}

.audio-meter-state {
  color: #93c5fd;
  font-size: 14px;
}

.audio-meter-track {
  width: 100%;
  height: 12px;
  border-radius: 999px;
  overflow: hidden;
  background: rgba(148, 163, 184, 0.12);
}

.audio-meter-fill {
  width: 0%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #22c55e, #3b82f6);
  transition: width 100ms linear;
}

.audio-meter-hint {
  margin: 0;
  font-size: 14px;
}

.prejoin-action-row {
  margin-top: auto;
}

.join-main-btn {
  width: 100%;
  min-height: 52px;
  font-size: 16px;
  font-weight: 700;
  border-radius: 14px;
  box-shadow: 0 14px 30px rgba(37, 99, 235, 0.28);
}

@media (max-width: 980px) {
  .prejoin-layout {
    grid-template-columns: 1fr;
  }

  .preview-stage {
    min-height: 320px;
  }
}

@media (max-width: 640px) {
  .prejoin-preview-card,
  .prejoin-controls-card {
    padding: 14px;
  }

  .preview-stage {
    min-height: 260px;
  }

  .preview-avatar {
    width: 80px;
    height: 80px;
    font-size: 30px;
  }

  .audio-meter-head {
    flex-direction: column;
    align-items: flex-start;
  }
}


/* prejoin alignment refinements */
.preview-stage {
  display: flex;
  align-items: center;
  justify-content: center;
}

.prejoin-audio-meter-card {
  margin-top: -2px;
}

@media (max-width: 640px) {
  .prejoin-layout {
    gap: 16px;
  }

  .prejoin-controls-card {
    gap: 16px;
  }
}

.field-group {
  display: flex;
  flex-direction: column;
}

.field-group label {
  display: block;
  margin-bottom: 8px;
}

.inline-label {
  display: flex !important;
  align-items: baseline;
  gap: 6px;
  flex-wrap: wrap;
}

.optional-inline {
  font-size: 0.95em;
}

#room-title-input,
#room-password-input,
#invite-link,
#display-name,
#room-password,
#chat-input {
  margin: 0;
}

#create-call-btn {
  margin-top: 16px;
  margin-bottom: 0;
}

#copy-link-btn {
  margin-top: 12px;
  margin-bottom: 12px;
}

#room-title-result {
  margin: 0 0 16px;
}

.open-call-btn {
  text-decoration: none;
}

.password-field-group {
  margin-top: 4px;
}

.field-group + .field-group {
  margin-top: 18px;
}

.field-group label {
  display: block;
  margin-bottom: 4px;
}

.checkbox-field-group {
  margin-top: 6px;
}

.checkbox-label {
  display: inline-flex !important;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-weight: 500;
}

.checkbox-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--primary);
  margin: 0;
}

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

.call-error-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.call-error-page {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 16px;
}

.call-error-card {
  max-width: 460px;
  width: 100%;
  text-align: center;
  padding: 40px 32px 36px;
  position: relative;
  overflow: hidden;
}

.call-error-card::before {
  content: "";
  position: absolute;
  inset: -40% -20% auto;
  height: 70%;
  border-radius: 50%;
  filter: blur(48px);
  opacity: 0.45;
  pointer-events: none;
}

.call-error-card--not_found::before {
  background: radial-gradient(circle at 30% 40%, #64748b, transparent 55%);
}

.call-error-card--ended::before {
  background: radial-gradient(circle at 50% 35%, #6366f1, transparent 50%);
}

.call-error-card--invalid_invite::before {
  background: radial-gradient(circle at 40% 45%, #f59e0b, transparent 52%);
}

.call-error-card--overloaded::before {
  background: radial-gradient(circle at 50% 40%, #ef4444, transparent 48%);
}

.call-error-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 8px;
  color: #e2e8f0;
}

.call-error-svg {
  width: 112px;
  height: 112px;
}

.call-error-code {
  margin: 0 0 12px;
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
}

.call-error-heading {
  margin: 0 0 12px;
  font-size: 26px;
  line-height: 1.25;
}

.call-error-message {
  margin: 0 0 28px;
  font-size: 16px;
  line-height: 1.55;
}

.call-error-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.call-error-actions .btn.secondary {
  background: rgba(37, 99, 235, 0.15);
  color: var(--text);
  border: 1px solid var(--line);
}

.call-error-actions .btn.secondary:hover {
  background: rgba(37, 99, 235, 0.28);
}