:root {
  color-scheme: dark;
  --bg: #101418;
  --surface: #111318;
  --surface-container: #1b1f24;
  --surface-container-high: #252a31;
  --surface-container-highest: #30363f;
  --on-surface: #e3e2e8;
  --on-surface-variant: #c4c7cf;
  --muted: #9299a3;
  --outline: #8b919b;
  --outline-soft: rgba(139, 145, 155, 0.3);
  --primary: #9ccaff;
  --on-primary: #003258;
  --primary-container: #154a75;
  --secondary: #c1c7d4;
  --secondary-container: #3d4654;
  --tertiary: #dabee8;
  --tertiary-container: #55415f;
  --success: #9bd9b1;
  --warning: #f4bf72;
  --error: #ffb4ab;
  --shadow: 0 24px 56px rgba(0, 0, 0, 0.36);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--on-surface);
  font-family: Roboto, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
select,
input {
  font: inherit;
}

button {
  border: 0;
  cursor: pointer;
}

button:disabled,
select:disabled,
input:disabled {
  cursor: not-allowed;
  opacity: 0.48;
}

.material-symbols-rounded {
  display: inline-flex;
  width: 1em;
  height: 1em;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  font-family: "Material Symbols Rounded";
  font-size: 1.25rem;
  font-style: normal;
  font-weight: 500;
  line-height: 1;
  letter-spacing: 0;
  text-transform: none;
  white-space: nowrap;
  word-wrap: normal;
  direction: ltr;
  -webkit-font-feature-settings: "liga";
  -webkit-font-smoothing: antialiased;
}

.app-shell {
  width: min(1520px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 18px 0 28px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 66px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-mark {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border-radius: var(--radius);
  background: var(--primary);
  color: var(--on-primary);
  font-size: 1.2rem;
  font-weight: 900;
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--primary);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  margin: 0;
  color: var(--on-surface);
  font-size: clamp(1.35rem, 2vw, 2rem);
  font-weight: 900;
  line-height: 1;
}

h2 {
  margin: 0;
  color: var(--on-surface);
  font-size: clamp(1.28rem, 1.9vw, 2.15rem);
  font-weight: 900;
  line-height: 1.05;
}

.status-cluster {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 36px;
  padding: 0 12px;
  border: 1px solid var(--outline-soft);
  border-radius: 999px;
  background: var(--surface-container);
  color: var(--on-surface-variant);
  font-size: 0.86rem;
  font-weight: 700;
  white-space: nowrap;
}

.status-pill .material-symbols-rounded {
  color: var(--secondary);
  font-size: 1.05rem;
}

.status-pill.is-good {
  border-color: rgba(155, 217, 177, 0.42);
  background: rgba(24, 70, 45, 0.72);
  color: var(--success);
}

.status-pill.is-good .material-symbols-rounded {
  color: var(--success);
}

.status-pill.is-warn {
  border-color: rgba(244, 191, 114, 0.44);
  background: rgba(92, 62, 16, 0.72);
  color: var(--warning);
}

.status-pill.is-warn .material-symbols-rounded {
  color: var(--warning);
}

.practice-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.68fr) minmax(360px, 0.82fr);
  gap: 18px;
  align-items: stretch;
  min-height: calc(100vh - 360px);
}

.studio-panel,
.routine-panel,
.replay-panel {
  border: 1px solid var(--outline-soft);
  border-radius: var(--radius);
  background: var(--surface-container);
  box-shadow: var(--shadow);
}

.studio-panel {
  display: grid;
  grid-template-rows: minmax(430px, 1fr) auto;
  overflow: hidden;
}

.video-frame {
  --guide-fit: contain;
  --guide-zoom: 1;
  position: relative;
  display: grid;
  min-height: 430px;
  overflow: hidden;
  background: #05070a;
}

#cameraVideo,
#poseCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

#cameraVideo {
  object-fit: cover;
  opacity: 0;
  transition: opacity 180ms ease;
}

#cameraVideo.is-live {
  opacity: 1;
}

#cameraVideo.is-mirrored {
  transform: scaleX(-1);
}

.video-frame.is-follow-video #cameraVideo {
  opacity: 0;
}

.video-frame.is-follow-video #cameraVideo.is-live {
  top: auto;
  right: auto;
  bottom: 16px;
  left: 16px;
  z-index: 4;
  width: min(188px, 28%);
  height: 126px;
  border: 1px solid rgba(156, 202, 255, 0.42);
  border-radius: var(--radius);
  background: #05070a;
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.42);
  object-fit: cover;
  opacity: 0.86;
}

#poseCanvas {
  z-index: 2;
  pointer-events: none;
}

.empty-state {
  position: relative;
  z-index: 3;
  align-self: center;
  justify-self: center;
  display: grid;
  justify-items: center;
  gap: 16px;
  width: min(420px, calc(100% - 40px));
  padding: 30px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius);
  background: rgba(17, 19, 24, 0.78);
  color: var(--on-surface);
  text-align: center;
  backdrop-filter: blur(14px);
}

.empty-state.is-hidden {
  display: none;
}

.hero-icon {
  color: var(--primary);
  font-size: 2.8rem;
}

.guide-panel {
  position: absolute;
  z-index: 4;
  left: 16px;
  top: 16px;
  display: grid;
  width: min(340px, calc(100% - 32px));
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius);
  background: rgba(17, 19, 24, 0.86);
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.36);
  backdrop-filter: blur(14px);
}

.guide-panel.is-hidden {
  display: none;
}

.guide-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  min-height: 38px;
  padding: 6px 8px 6px 12px;
  color: var(--tertiary);
  font-size: 0.76rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.guide-panel-header span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-width: 0;
}

#guideVideo {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #05070a;
  object-fit: cover;
}

.video-frame.is-follow-video .guide-panel {
  inset: 0;
  z-index: 1;
  width: 100%;
  border: 0;
  border-radius: 0;
  background: #05070a;
  box-shadow: none;
  backdrop-filter: none;
}

.video-frame.is-follow-video #poseCanvas {
  z-index: 3;
}

.video-frame.is-follow-video .guide-panel-header {
  position: absolute;
  z-index: 3;
  top: 12px;
  left: 12px;
  min-height: 36px;
  padding: 0 6px 0 12px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  background: rgba(17, 19, 24, 0.78);
  backdrop-filter: blur(12px);
}

.video-frame.is-follow-video #guideVideo {
  position: absolute;
  top: 50%;
  left: 50%;
  width: calc(100% * var(--guide-zoom));
  height: calc(100% * var(--guide-zoom));
  aspect-ratio: auto;
  object-fit: var(--guide-fit);
  transform: translate(-50%, -50%);
}

.score-badge {
  position: absolute;
  z-index: 4;
  right: 16px;
  bottom: 16px;
  display: grid;
  justify-items: center;
  min-width: 118px;
  padding: 14px 16px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius);
  background: rgba(17, 19, 24, 0.78);
  color: var(--on-surface);
  backdrop-filter: blur(14px);
}

.score-badge.is-recording {
  border-color: rgba(255, 180, 171, 0.5);
  box-shadow: 0 0 0 1px rgba(255, 180, 171, 0.2);
}

.score-badge span {
  color: var(--success);
  font-size: clamp(1.7rem, 4vw, 3.2rem);
  font-weight: 900;
  line-height: 0.92;
}

.follow-hud {
  position: absolute;
  z-index: 4;
  top: 16px;
  right: 16px;
  display: none;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
  max-width: min(520px, calc(100% - 360px));
}

.video-frame.is-follow-video .follow-hud {
  display: flex;
}

.hud-chip,
.hud-status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 34px;
  padding: 0 11px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 999px;
  background: rgba(17, 19, 24, 0.78);
  color: var(--on-surface);
  font-size: 0.76rem;
  font-weight: 900;
  text-transform: uppercase;
  backdrop-filter: blur(12px);
}

.hud-status {
  color: var(--on-surface-variant);
  text-transform: none;
}

.hud-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
}

.is-teacher .hud-dot {
  background: var(--tertiary);
  box-shadow: 0 0 0 4px rgba(218, 190, 232, 0.16);
}

.is-you .hud-dot {
  background: var(--success);
  box-shadow: 0 0 0 4px rgba(155, 217, 177, 0.16);
}

.score-badge small,
.session-summary small,
.replay-summary small {
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.studio-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  min-height: 72px;
  padding: 12px 14px;
  border-top: 1px solid var(--outline-soft);
  background: var(--surface);
}

.select-field,
.toggle-field {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--on-surface-variant);
  font-size: 0.86rem;
  font-weight: 800;
}

.select-field {
  flex: 1 1 240px;
  min-width: 180px;
}

.compact-field {
  flex: 0 1 132px;
  min-width: 132px;
}

.select-field select {
  min-width: 120px;
  width: 100%;
  height: 42px;
  padding: 0 12px;
  border: 1px solid var(--outline-soft);
  border-radius: var(--radius);
  background: var(--surface-container-high);
  color: var(--on-surface);
  font-weight: 700;
}

.toggle-field {
  min-height: 42px;
  padding: 0 12px;
  border: 1px solid var(--outline-soft);
  border-radius: 999px;
  background: var(--surface-container-high);
}

.toggle-field input {
  width: 18px;
  height: 18px;
  accent-color: var(--primary);
}

.segmented-control {
  display: inline-flex;
  flex: 0 0 auto;
  min-height: 42px;
  padding: 3px;
  border: 1px solid var(--outline-soft);
  border-radius: 999px;
  background: var(--surface-container-high);
}

.segmented-control label {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-width: 94px;
  padding: 0 12px;
  border-radius: 999px;
  color: var(--on-surface-variant);
  font-size: 0.84rem;
  font-weight: 900;
}

.segmented-control input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.segmented-control label:has(input:checked) {
  background: var(--primary);
  color: var(--on-primary);
}

.segmented-control label:has(input:disabled) {
  opacity: 0.46;
}

.range-field {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 42px;
  padding: 0 12px;
  border: 1px solid var(--outline-soft);
  border-radius: 999px;
  background: var(--surface-container-high);
  color: var(--on-surface-variant);
  font-size: 0.84rem;
  font-weight: 900;
}

.range-field input {
  width: 96px;
  accent-color: var(--primary);
}

.guide-only-control {
  display: none;
}

.studio-panel.has-guide .guide-only-control {
  display: flex;
}

.routine-panel {
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-width: 0;
  padding: 18px;
}

.step-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.timer-ring {
  --progress: 0deg;
  display: grid;
  flex: 0 0 auto;
  width: 76px;
  height: 76px;
  place-items: center;
  border-radius: 50%;
  background:
    radial-gradient(circle at center, var(--surface-container) 58%, transparent 59%),
    conic-gradient(var(--primary) var(--progress), var(--surface-container-highest) 0deg);
  color: var(--on-surface);
  font-size: 0.96rem;
  font-weight: 900;
}

.cue-block {
  padding: 13px 14px;
  border: 1px solid var(--outline-soft);
  border-radius: var(--radius);
  background: var(--surface-container-high);
}

.cue-block p {
  margin: 0;
}

.cue-label {
  margin-bottom: 7px;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.feedback-block {
  border-color: rgba(156, 202, 255, 0.3);
  background: rgba(21, 74, 117, 0.48);
}

.replay-cue {
  border-color: rgba(218, 190, 232, 0.28);
  background: rgba(85, 65, 95, 0.4);
}

.metric-stack {
  display: grid;
  gap: 10px;
}

.metric {
  display: grid;
  grid-template-columns: 118px 1fr 42px;
  align-items: center;
  gap: 10px;
  color: var(--on-surface-variant);
  font-size: 0.82rem;
  font-weight: 800;
}

.metric-bar {
  height: 9px;
  overflow: hidden;
  border-radius: 999px;
  background: var(--surface-container-highest);
}

.metric-bar span {
  display: block;
  width: var(--value);
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--error), var(--warning) 44%, var(--success));
}

.control-row {
  display: grid;
  grid-template-columns: 48px minmax(118px, 1fr) 48px 48px;
  gap: 10px;
  margin-top: auto;
}

.primary-action,
.secondary-action,
.icon-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  border-radius: 999px;
  font-weight: 900;
  white-space: nowrap;
}

.primary-action {
  padding: 0 18px;
  background: var(--primary);
  color: var(--on-primary);
}

.primary-action:hover:not(:disabled) {
  background: #c7e1ff;
}

.secondary-action {
  padding: 0 14px;
  border: 1px solid transparent;
  background: var(--secondary-container);
  color: var(--secondary);
}

.secondary-action:hover:not(:disabled) {
  background: #4a5362;
}

.icon-action {
  width: 48px;
  border: 1px solid var(--outline-soft);
  background: var(--surface-container-high);
  color: var(--on-surface-variant);
}

.icon-action:hover:not(:disabled) {
  border-color: rgba(156, 202, 255, 0.45);
  color: var(--primary);
}

button.guide-only-control {
  display: none;
}

.studio-panel.has-guide button.guide-only-control {
  display: inline-flex;
}

.tiny-icon-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--on-surface);
}

.tiny-icon-action:hover {
  background: rgba(255, 255, 255, 0.14);
}

.record-action.is-recording {
  background: var(--error);
  color: #690005;
}

.session-summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.session-summary div,
.replay-summary div {
  display: grid;
  justify-items: center;
  gap: 2px;
  min-width: 0;
  padding: 12px 8px;
  border: 1px solid var(--outline-soft);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--on-surface);
}

.session-summary span,
.replay-summary span {
  font-size: clamp(1.08rem, 2vw, 1.45rem);
  font-weight: 900;
  line-height: 1;
}

.replay-panel {
  display: grid;
  gap: 14px;
  margin-top: 18px;
  padding: 18px;
}

.replay-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.replay-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.timeline-shell {
  display: grid;
  gap: 8px;
}

.timeline-track {
  position: relative;
  min-height: 38px;
  display: grid;
  align-items: center;
}

#replayTimeline {
  position: relative;
  z-index: 2;
  width: 100%;
  accent-color: var(--primary);
}

.timeline-markers {
  position: absolute;
  z-index: 1;
  left: 8px;
  right: 8px;
  top: 50%;
  height: 18px;
  transform: translateY(-50%);
  pointer-events: none;
}

.timeline-markers span {
  position: absolute;
  top: 0;
  width: 4px;
  height: 18px;
  border-radius: 999px;
  background: var(--error);
  transform: translateX(-50%);
}

.timeline-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 800;
}

.replay-summary {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.replay-bottom {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
  gap: 12px;
}

.issue-list {
  display: flex;
  flex-wrap: wrap;
  align-content: start;
  gap: 8px;
  min-height: 72px;
  padding: 12px;
  border: 1px solid var(--outline-soft);
  border-radius: var(--radius);
  background: var(--surface);
}

.issue-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 34px;
  padding: 0 12px;
  border-radius: 999px;
  background: var(--tertiary-container);
  color: var(--tertiary);
  font-size: 0.82rem;
  font-weight: 900;
}

.sequence-strip {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 10px;
  margin-top: 14px;
}

.sequence-card {
  display: grid;
  gap: 8px;
  min-height: 114px;
  padding: 12px;
  border: 1px solid var(--outline-soft);
  border-radius: var(--radius);
  background: var(--surface-container);
  color: var(--on-surface);
  text-align: left;
}

.sequence-card.is-active {
  border-color: rgba(156, 202, 255, 0.55);
  background: rgba(21, 74, 117, 0.45);
}

.sequence-card h3 {
  margin: 0;
  font-size: 0.96rem;
  line-height: 1.1;
}

.sequence-card p {
  margin: 0;
  color: var(--on-surface-variant);
  font-size: 0.78rem;
  line-height: 1.3;
}

.sequence-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  color: var(--primary);
  font-size: 0.74rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.sequence-score {
  color: var(--warning);
}

@media (max-width: 1120px) {
  .practice-grid {
    grid-template-columns: 1fr;
    min-height: 0;
  }

  .routine-panel {
    min-height: auto;
  }

  .sequence-strip {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .app-shell {
    width: min(100vw - 20px, 720px);
    padding-top: 10px;
  }

  .topbar,
  .replay-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .status-cluster,
  .replay-actions {
    justify-content: flex-start;
  }

  .studio-panel {
    grid-template-rows: minmax(340px, 58vh) auto;
  }

  .studio-toolbar {
    align-items: stretch;
    flex-direction: column;
  }

  .select-field,
  .range-field {
    align-items: flex-start;
    flex-direction: column;
    gap: 6px;
  }

  .segmented-control {
    width: 100%;
  }

  .segmented-control label {
    flex: 1;
  }

  .range-field input {
    width: 100%;
  }

  .toggle-field {
    justify-content: space-between;
  }

  .guide-panel {
    left: 10px;
    top: 10px;
    width: min(260px, calc(100% - 20px));
  }

  .video-frame.is-follow-video #cameraVideo.is-live {
    bottom: 10px;
    left: 10px;
    width: 126px;
    height: 90px;
  }

  .follow-hud {
    top: 10px;
    right: 10px;
    max-width: calc(100% - 210px);
  }

  .hud-chip,
  .hud-status {
    min-height: 30px;
    padding: 0 9px;
    font-size: 0.68rem;
  }

  .control-row {
    grid-template-columns: 48px 1fr 48px;
  }

  #resetButton {
    grid-column: 1 / -1;
    width: 100%;
  }

  .session-summary,
  .replay-summary,
  .sequence-strip,
  .replay-bottom {
    grid-template-columns: 1fr;
  }

  .metric {
    grid-template-columns: 96px 1fr 38px;
  }
}