/* ===== TeslaExtended — Precision Instrument Theme ===== */

:root {
  --bg-0: #050507;
  --bg-1: #0a0b10;
  --bg-2: #111218;
  --surface: rgba(17, 18, 24, 0.85);
  --surface-raised: rgba(22, 23, 32, 0.92);
  --line: rgba(255, 255, 255, 0.06);
  --line-hover: rgba(255, 255, 255, 0.1);
  --text: #ececf1;
  --text-secondary: #8e8ea0;
  --text-tertiary: #565869;
  --accent: #3b82f6;
  --accent-glow: rgba(59, 130, 246, 0.15);
  --accent-subtle: rgba(59, 130, 246, 0.08);
  --good: #22c55e;
  --good-glow: rgba(34, 197, 94, 0.12);
  --bad: #ef4444;
  --bad-glow: rgba(239, 68, 68, 0.1);
  --radius: 14px;
  --radius-sm: 10px;
  --radius-lg: 18px;
  --shadow: 0 1px 2px rgba(0,0,0,0.3), 0 8px 32px rgba(0,0,0,0.2);
  --font-body: "DM Sans", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "Geist Mono", "SF Mono", "Fira Code", monospace;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
}

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

body {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--text);
  background: var(--bg-0);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  color-scheme: dark;
  overflow-x: hidden;
}

/* Subtle grid texture */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 50% 0%, rgba(59, 130, 246, 0.04), transparent 60%);
  z-index: 0;
}

/* ===== TITLEBAR — draggable window region ===== */

.titlebar {
  -webkit-app-region: drag;
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 52px;
  padding: 0 18px 0 78px; /* 78px left for macOS traffic lights */
  background: rgba(5, 5, 7, 0.75);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--line);
}

.titlebar-text {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: -0.01em;
}

.titlebar .status-pills {
  -webkit-app-region: no-drag;
}

/* ===== HOST LAYOUT ===== */

body.host-page {
  padding: 0;
}

.host-shell {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 620px;
  margin: 0 auto;
  padding: 16px 18px 32px;
}

/* ===== CARDS ===== */

.card {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 20px;
  transition: border-color 0.2s ease;
}

.card:hover {
  border-color: var(--line-hover);
}

.card-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.card-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}

.card-note {
  font-size: 11px;
  color: var(--text-tertiary);
}

/* ===== STATUS INDICATORS ===== */

.status-pills {
  display: flex;
  align-items: center;
  gap: 14px;
}

.status-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 500;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--bad);
  box-shadow: 0 0 6px var(--bad-glow);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.status-dot.connected {
  background: var(--good);
  box-shadow: 0 0 8px var(--good-glow);
}

/* ===== PAIRING CARD ===== */

.connection-info {
  display: grid;
  gap: 12px;
}

.preparing-text {
  color: var(--text-tertiary);
  font-size: 13px;
}

.pairing-shell {
  display: grid;
  gap: 12px;
  padding: 20px;
  border-radius: var(--radius);
  background: var(--bg-1);
  border: 1px solid var(--line);
}

.pairing-site {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.02em;
  word-break: break-word;
}

.pairing-code {
  font-family: var(--font-mono);
  font-size: clamp(2.8rem, 8vw, 3.6rem);
  line-height: 1;
  letter-spacing: 0.18em;
  font-weight: 800;
  color: var(--text);
  text-shadow: 0 0 40px var(--accent-glow);
}

.pairing-caption {
  color: var(--text-tertiary);
  font-size: 12px;
}

.link-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

/* ===== CHECKLIST ===== */

.checklist-card {
  display: grid;
  gap: 20px;
}

.step-list {
  display: grid;
  gap: 14px;
}

.step-item {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 12px;
  align-items: start;
}

.step-number {
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: var(--accent-subtle);
  border: 1px solid rgba(59, 130, 246, 0.15);
  color: var(--accent);
  font-weight: 700;
  font-size: 13px;
}

.step-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

.step-copy {
  margin-top: 3px;
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.5;
}

/* ===== BUTTONS ===== */

.hero-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.btn {
  appearance: none;
  border: none;
  border-radius: var(--radius-sm);
  padding: 10px 16px;
  background: var(--surface-raised);
  border: 1px solid var(--line);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
  text-align: center;
  -webkit-app-region: no-drag;
}

.btn:hover {
  border-color: var(--line-hover);
  background: rgba(255, 255, 255, 0.06);
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  box-shadow: 0 4px 16px rgba(59, 130, 246, 0.25);
}

.btn-primary:hover {
  background: #4b90f7;
  border-color: #4b90f7;
}

.btn-secondary {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--text-secondary);
}

.btn-secondary:hover {
  color: var(--text);
  border-color: var(--line-hover);
}

.btn-danger {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.2);
  color: #fca5a5;
}

.btn-danger:hover {
  background: rgba(239, 68, 68, 0.18);
}

.btn-small {
  padding: 7px 11px;
  border-radius: 8px;
  font-size: 12px;
}

.btn-large {
  padding: 12px 20px;
  min-width: 160px;
}

/* ===== ADVANCED SETTINGS ===== */

.advanced-card {
  padding: 0;
  overflow: hidden;
}

.advanced-card summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  border-bottom: 1px solid transparent;
  transition: color 0.15s ease;
  -webkit-app-region: no-drag;
}

.advanced-card summary:hover {
  color: var(--text);
}

.advanced-card[open] summary {
  border-bottom-color: var(--line);
}

.advanced-card summary::-webkit-details-marker {
  display: none;
}

.chevron {
  transition: transform 0.2s ease;
  color: var(--text-tertiary);
}

.advanced-card[open] .chevron {
  transform: rotate(180deg);
}

.advanced-body {
  padding: 16px 20px 20px;
}

.tip-banner {
  background: var(--accent-subtle);
  border: 1px solid rgba(59, 130, 246, 0.15);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  margin-bottom: 14px;
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.tip-banner strong {
  color: var(--text);
}

.tip-icon {
  color: var(--accent);
  margin-right: 4px;
}

.settings {
  display: grid;
  gap: 0;
}

.setting-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.setting-row:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.setting-row:first-child {
  padding-top: 0;
}

.setting-row label {
  color: var(--text);
  font-size: 13px;
  font-weight: 500;
}

.setting-hint {
  display: block;
  font-size: 11px;
  color: var(--text-tertiary);
  font-weight: 400;
  margin-top: 3px;
  line-height: 1.4;
}

.setting-row select {
  flex-shrink: 0;
  min-width: 150px;
  padding: 8px 12px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--bg-1);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 13px;
  cursor: pointer;
  transition: border-color 0.15s ease;
}

.setting-row select:hover {
  border-color: var(--line-hover);
}

.setting-row select:focus {
  outline: none;
  border-color: var(--accent);
}

/* ===== PREVIEW & LOG ===== */

.preview-card,
.log-card {
  /* in flow */
}

#preview {
  width: 100%;
  border-radius: var(--radius);
  background: #000;
  aspect-ratio: 16 / 10;
  object-fit: contain;
}

.log-area {
  max-height: 180px;
  overflow: auto;
  display: grid;
  gap: 4px;
}

.log-entry {
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg-1);
  color: var(--text-tertiary);
  font-family: var(--font-mono);
  font-size: 11px;
}

/* ===== CLIENT PAGE ===== */

.client-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 28px;
}

.client-connect {
  width: 100%;
  min-height: calc(100vh - 56px);
  display: grid;
  place-items: center;
}

.hero-card,
.connect-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
}

.connect-card {
  width: min(580px, 100%);
  padding: 32px;
  text-align: left;
}

.connect-card h1 {
  margin: 20px 0 12px;
  font-size: clamp(1.8rem, 5vw, 2.4rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
  font-weight: 700;
}

.hero-copy {
  max-width: 52ch;
  margin: 0;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.6;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 999px;
  background: var(--accent-subtle);
  color: var(--accent);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.connect-card .status-bar {
  margin-top: 22px;
}

.status-bar {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.connect-card .loader {
  margin: 28px 0 18px;
}

.hint {
  margin: 0;
  color: var(--text-secondary);
  font-size: 13px;
}

.loader {
  width: 36px;
  height: 36px;
  border: 2px solid var(--line);
  border-top-color: var(--accent);
  border-radius: 999px;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ===== PAIRING FORM (client) ===== */

.pairing-form {
  display: grid;
  gap: 10px;
  margin: 22px 0 12px;
}

.pairing-label {
  color: var(--text-tertiary);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.pairing-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.pairing-input {
  flex: 1 1 200px;
  min-width: 0;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: var(--bg-1);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: border-color 0.15s ease;
}

.pairing-input:focus {
  outline: none;
  border-color: var(--accent);
}

.pairing-error {
  margin: 0;
  color: #fca5a5;
  font-size: 13px;
}

/* ===== VIDEO CONTAINER (client streaming) ===== */

.video-container {
  position: fixed;
  inset: 0;
  background: #000;
}

.video-container video,
.video-container img {
  width: 100vw;
  height: 100vh;
  object-fit: fill;
  background: #000;
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
  -webkit-transform: translateZ(0);
  transform: translateZ(0);
  will-change: contents;
}

.overlay {
  position: fixed;
  inset: 0 0 auto 0;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.overlay.visible {
  opacity: 1;
  pointer-events: auto;
}

body.client-page.streaming .overlay {
  opacity: 0;
}

body.client-page.streaming .overlay:hover,
body.client-page.streaming .overlay.visible {
  opacity: 1;
}

.overlay-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: linear-gradient(180deg, rgba(5, 5, 7, 0.8), transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.overlay-status {
  flex: 1;
  color: var(--text-secondary);
  font-size: 12px;
}

.overlay .btn-small {
  pointer-events: auto;
}

/* ===== SOURCE PICKER MODAL ===== */

.source-picker-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: grid;
  place-items: center;
  background: rgba(5, 5, 7, 0.8);
  backdrop-filter: blur(16px);
}

.source-picker {
  width: min(680px, calc(100vw - 32px));
  max-height: min(80vh, 600px);
  overflow: auto;
  padding: 24px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: var(--surface-raised);
  box-shadow: var(--shadow);
}

.source-picker h3 {
  margin: 0 0 16px;
  font-size: 1.2rem;
  font-weight: 700;
}

.source-picker-hint {
  margin: -8px 0 16px;
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.5;
}

.source-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}

.source-item {
  display: grid;
  gap: 8px;
  padding: 10px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--bg-1);
  color: var(--text);
  cursor: pointer;
  text-align: left;
  transition: border-color 0.15s ease;
}

.source-item:hover {
  border-color: var(--accent);
}

.source-item img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: 8px;
  background: #000;
}

.source-item span {
  font-size: 12px;
  color: var(--text-secondary);
}

.cancel-btn {
  width: auto;
}

/* ===== UTILITIES ===== */

.error {
  color: #fca5a5;
}

.warning-box {
  border: 1px solid rgba(245, 158, 11, 0.2);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  background: rgba(245, 158, 11, 0.06);
  color: #fbbf24;
  font-size: 13px;
}

/* Link meta (kept for JS compatibility) */
.link-meta {
  color: var(--text-tertiary);
  font-size: 12px;
  font-family: var(--font-mono);
}

.link-shell {
  display: grid;
  gap: 12px;
  padding: 16px;
  border-radius: var(--radius);
  background: var(--bg-1);
  border: 1px solid var(--line);
}

.link-shell .link-label {
  color: var(--text-tertiary);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.link-shell .link-value {
  font-size: 1.1rem;
  letter-spacing: -0.02em;
  color: var(--text);
  word-break: break-word;
}

.link-shell code {
  font: inherit;
  color: inherit;
  background: transparent;
}

.link-shell .link-meta {
  color: var(--text-tertiary);
  font-size: 13px;
}

.link-shell strong {
  color: var(--text);
}

.link-shell .link-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

/* ===== RESPONSIVE ===== */

@media (max-width: 640px) {
  .titlebar {
    padding-left: 70px;
  }

  .host-shell {
    padding: 12px 12px 24px;
  }

  .card {
    padding: 16px;
    border-radius: var(--radius);
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .setting-row {
    flex-direction: column;
    gap: 8px;
  }

  .setting-row select {
    width: 100%;
    min-width: 0;
  }

  .pairing-row {
    flex-direction: column;
  }

  .status-pills {
    gap: 10px;
  }

  .overlay-bar {
    flex-wrap: wrap;
  }
}