:root {
  --bg: #0a0a0f;
  --panel: rgba(18, 18, 26, 0.88);
  --panel-strong: rgba(26, 26, 37, 0.94);
  --line: rgba(255, 255, 255, 0.08);
  --text: #f4f1ff;
  --muted: #9d97b5;
  --accent: #a855f7;
  --accent-soft: rgba(168, 85, 247, 0.2);
  --focused: #22c55e;
  --focused-soft: rgba(34, 197, 94, 0.18);
  --distracted: #ef4444;
  --distracted-soft: rgba(239, 68, 68, 0.18);
  --waiting: #7b7f93;
  --shadow: 0 22px 60px rgba(0, 0, 0, 0.45);
  --radius: 28px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(168, 85, 247, 0.18), transparent 32%),
    radial-gradient(circle at 85% 18%, rgba(34, 197, 94, 0.11), transparent 25%),
    linear-gradient(180deg, #08090d 0%, var(--bg) 42%, #06070b 100%);
  color: var(--text);
  font-family: "IBM Plex Sans", sans-serif;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  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: 72px 72px;
  mask-image: radial-gradient(circle at center, rgba(0, 0, 0, 0.85), transparent 82%);
  pointer-events: none;
  opacity: 0.24;
}

.background-glow {
  position: fixed;
  width: 28rem;
  height: 28rem;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.25;
  pointer-events: none;
}

.background-glow-left {
  top: -12rem;
  left: -8rem;
  background: rgba(168, 85, 247, 0.42);
}

.background-glow-right {
  right: -9rem;
  bottom: -11rem;
  background: rgba(34, 197, 94, 0.2);
}

.app-shell {
  width: min(1240px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 2rem 0 3.5rem;
  position: relative;
  z-index: 1;
}

.reveal {
  animation: rise-in 0.65s ease both;
}

.topbar,
.workspace-grid,
.insight-grid,
.history-panel {
  margin-bottom: 1.35rem;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 1rem 2rem;
}

.brand-block {
  max-width: 44rem;
}

.eyebrow,
.section-label {
  margin: 0 0 0.55rem;
  color: var(--accent);
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.brand-block h1,
.section-copy h2 {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  letter-spacing: -0.04em;
}

.brand-block h1 {
  font-size: clamp(2.35rem, 5vw, 4.75rem);
  line-height: 0.95;
}

.lede {
  margin: 1rem 0 0;
  max-width: 36rem;
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.7;
}

.topbar-tools {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.85rem;
  min-width: min(26rem, 100%);
}

.sync-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.78rem 1rem;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  border-radius: 999px;
  color: var(--muted);
}

.tool-card,
.sensitivity-control {
  width: min(26rem, 100%);
  padding: 0.9rem 1rem;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  border-radius: 22px;
}

.tool-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.tool-copy {
  display: grid;
  gap: 0.18rem;
}

.tool-copy strong {
  font-size: 0.96rem;
  color: var(--text);
}

.tool-label {
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.tool-value {
  color: var(--accent);
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.95rem;
  letter-spacing: -0.02em;
}

.sync-dot,
.history-indicator {
  width: 0.65rem;
  height: 0.65rem;
  border-radius: 50%;
  flex-shrink: 0;
}

.sync-dot {
  background: var(--waiting);
  box-shadow: 0 0 16px rgba(123, 127, 147, 0.45);
}

.sync-dot.online {
  background: var(--focused);
  box-shadow: 0 0 18px rgba(34, 197, 94, 0.6);
}

.sync-dot.offline {
  background: var(--distracted);
  box-shadow: 0 0 18px rgba(239, 68, 68, 0.55);
}

.sound-toggle {
  display: inline-grid;
  grid-template-columns: auto auto;
  align-items: center;
  gap: 0.85rem;
  color: var(--text);
  font-size: 0.95rem;
}

.sound-toggle input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.toggle-track {
  width: 3.6rem;
  height: 2rem;
  padding: 0.18rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.09);
  display: inline-flex;
  align-items: center;
  transition: background-color 0.2s ease;
}

.toggle-knob {
  width: 1.5rem;
  height: 1.5rem;
  background: white;
  border-radius: 50%;
  transform: translateX(0);
  transition: transform 0.22s ease;
}

.sound-toggle input:checked + .toggle-track {
  background: var(--accent);
}

.sound-toggle input:checked + .toggle-track .toggle-knob {
  transform: translateX(1.55rem);
}

.sensitivity-control {
  display: grid;
  gap: 0.75rem;
}

.sensitivity-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.85rem;
}

.range-input {
  width: 100%;
  accent-color: var(--accent);
}

.workspace-grid,
.insight-grid,
.history-grid {
  display: grid;
  gap: 1.35rem;
}

.workspace-grid {
  grid-template-columns: minmax(0, 1.45fr) minmax(320px, 0.9fr);
}

.insight-grid {
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
}

.history-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.panel {
  position: relative;
  padding: 1.35rem;
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.02), transparent 16%),
    var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.panel::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  border: 1px solid rgba(255, 255, 255, 0.03);
  pointer-events: none;
}

.section-copy {
  margin-bottom: 1rem;
}

.section-copy h2 {
  font-size: clamp(1.25rem, 2vw, 1.8rem);
  line-height: 1.08;
}

.video-shell {
  position: relative;
  aspect-ratio: 16 / 10;
  width: 100%;
  overflow: hidden;
  border-radius: calc(var(--radius) - 8px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  background:
    radial-gradient(circle at top, rgba(168, 85, 247, 0.12), transparent 38%),
    rgba(6, 8, 12, 0.94);
}

.video-shell::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.02), transparent 28%),
    repeating-linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.03) 0,
      rgba(255, 255, 255, 0.03) 1px,
      transparent 1px,
      transparent 14px
    );
  mix-blend-mode: screen;
  opacity: 0.2;
  pointer-events: none;
}

#webcam,
#overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

#webcam {
  object-fit: cover;
  transform: scaleX(-1);
}

#overlay {
  z-index: 2;
}

.mask {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 1.5rem;
  z-index: 3;
  background: rgba(10, 10, 15, 0.82);
  backdrop-filter: blur(10px);
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.mask.hidden {
  opacity: 0;
  visibility: hidden;
}

.idle-title {
  margin: 0 0 0.35rem;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.35rem;
}

.mask p {
  margin: 0;
  color: var(--muted);
}

.spinner {
  width: 3rem;
  height: 3rem;
  margin-bottom: 1rem;
  border-radius: 50%;
  border: 3px solid rgba(255, 255, 255, 0.12);
  border-top-color: var(--accent);
  animation: spin 0.9s linear infinite;
}

.control-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.8rem;
  margin-top: 1rem;
}

.button {
  border: 0;
  border-radius: 999px;
  padding: 0.95rem 1.25rem;
  color: white;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease,
    opacity 0.2s ease,
    background-color 0.2s ease;
}

.button:hover:not(:disabled) {
  transform: translateY(-1px);
}

.button:disabled {
  cursor: not-allowed;
  opacity: 0.4;
}

.button-primary {
  background: linear-gradient(135deg, #bc7eff, var(--accent));
  box-shadow: 0 18px 30px rgba(168, 85, 247, 0.25);
}

.button-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
}

.status-pill {
  padding: 0.75rem 1rem;
  border-radius: 999px;
  font-weight: 600;
  letter-spacing: 0.01em;
  border: 1px solid transparent;
}

.status-pill.waiting {
  color: #d5d7e0;
  background: rgba(123, 127, 147, 0.18);
  border-color: rgba(123, 127, 147, 0.28);
}

.status-pill.focused {
  color: #d6ffe2;
  background: var(--focused-soft);
  border-color: rgba(34, 197, 94, 0.32);
  box-shadow: 0 0 0 1px rgba(34, 197, 94, 0.08), 0 0 18px rgba(34, 197, 94, 0.16);
}

.status-pill.distracted {
  color: #ffe0e0;
  background: var(--distracted-soft);
  border-color: rgba(239, 68, 68, 0.32);
  animation: pulse 1.4s ease infinite;
}

.telemetry-panel {
  background:
    linear-gradient(180deg, rgba(168, 85, 247, 0.12), transparent 26%),
    var(--panel-strong);
}

.metric-stack {
  display: grid;
  gap: 0.7rem;
}

.metric-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: baseline;
  padding: 0.95rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.metric-row span {
  color: var(--muted);
}

.metric-row strong {
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(1.4rem, 2.6vw, 2rem);
  letter-spacing: -0.04em;
}

.session-note,
.timeline-caption {
  margin: 1rem 0 0;
  color: var(--muted);
  line-height: 1.6;
}

.chart-wrap {
  position: relative;
  min-height: 300px;
}

.timeline-strip {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(18px, 1fr));
  gap: 0.45rem;
  align-items: center;
  min-height: 120px;
  padding: 0.4rem 0;
}

.timeline-block {
  height: 2.8rem;
  border-radius: 999px;
  background: rgba(123, 127, 147, 0.18);
  border: 1px solid rgba(123, 127, 147, 0.24);
  transition:
    transform 0.2s ease,
    background-color 0.2s ease,
    border-color 0.2s ease;
}

.timeline-block.focused {
  background: var(--focused-soft);
  border-color: rgba(34, 197, 94, 0.35);
}

.timeline-block.distracted {
  background: var(--distracted-soft);
  border-color: rgba(239, 68, 68, 0.36);
}

.timeline-block:hover {
  transform: translateY(-2px);
}

.history-header {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 1rem 2rem;
  margin-bottom: 1rem;
}

.history-column {
  min-width: 0;
}

.history-title {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.85rem;
  color: var(--muted);
  font-weight: 600;
}

.history-server {
  background: var(--accent);
}

.history-local {
  background: var(--focused);
}

.history-list {
  display: grid;
  gap: 0.8rem;
}

.history-card,
.history-empty {
  padding: 1rem;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.07);
}

.history-empty {
  color: var(--muted);
}

.history-card header {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: baseline;
  margin-bottom: 0.75rem;
}

.history-card time {
  font-family: "Space Grotesk", sans-serif;
  font-size: 1rem;
}

.history-card .history-pill {
  padding: 0.32rem 0.6rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--muted);
  font-size: 0.8rem;
}

.history-card ul {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.history-card li {
  color: var(--muted);
  font-size: 0.92rem;
}

.history-card strong {
  color: var(--text);
  font-weight: 600;
}

.toast {
  position: fixed;
  top: 1.4rem;
  right: 1.4rem;
  display: grid;
  gap: 0.2rem;
  max-width: min(22rem, calc(100vw - 2rem));
  padding: 1rem 1.1rem;
  background: rgba(18, 18, 26, 0.95);
  border: 1px solid rgba(239, 68, 68, 0.35);
  border-radius: 22px;
  box-shadow: 0 22px 45px rgba(0, 0, 0, 0.4);
  transform: translateY(-16px);
  opacity: 0;
  pointer-events: none;
  transition:
    opacity 0.25s ease,
    transform 0.25s ease;
  z-index: 20;
}

.toast.visible {
  opacity: 1;
  transform: translateY(0);
}

.toast strong {
  color: #ffd9d9;
}

.toast span {
  color: var(--muted);
}

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

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.14);
  }
  50% {
    box-shadow: 0 0 0 8px rgba(239, 68, 68, 0.03);
  }
}

@media (max-width: 960px) {
  .topbar,
  .history-header {
    align-items: flex-start;
    flex-direction: column;
  }

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

  .workspace-grid,
  .insight-grid,
  .history-grid {
    grid-template-columns: 1fr;
  }

  .panel {
    padding: 1.1rem;
  }
}

@media (max-width: 640px) {
  .app-shell {
    width: min(100% - 1rem, 1240px);
    padding-top: 1.1rem;
  }

  .brand-block h1 {
    font-size: 2.3rem;
  }

  .metric-row strong {
    font-size: 1.45rem;
  }

  .history-card ul {
    grid-template-columns: 1fr;
  }

  .control-row {
    flex-direction: column;
    align-items: stretch;
  }

  .button,
  .status-pill {
    width: 100%;
    text-align: center;
    justify-content: center;
  }

  .toast {
    left: 0.75rem;
    right: 0.75rem;
    top: 0.75rem;
    max-width: none;
  }
}