:root {
  color-scheme: light;
  --ink: #18201f;
  --muted: #66706e;
  --line: #d9dfdc;
  --panel: #ffffff;
  --wash: #f5f1e8;
  --mint: #dff2e7;
  --green: #1f7a4d;
  --teal: #16677a;
  --amber: #b3681d;
  --red: #b33f36;
  --shadow: 0 18px 60px rgba(24, 32, 31, 0.14);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  color: var(--ink);
  background: linear-gradient(135deg, #f7f3ea 0%, #e7f1ed 54%, #f8faf9 100%);
}

button,
select,
input {
  font: inherit;
}

.app {
  display: grid;
  grid-template-columns: minmax(290px, 360px) 1fr;
  min-height: 100vh;
}

.rail {
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 24px;
  border-right: 1px solid rgba(24, 32, 31, 0.1);
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(18px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 62px;
}

.mark {
  display: grid;
  width: 46px;
  height: 46px;
  place-items: center;
  border-radius: 8px;
  color: #fff;
  background: var(--ink);
  font-weight: 800;
}

h1,
h2,
h3,
p {
  margin: 0;
}

.brand h1 {
  font-size: 1.35rem;
  line-height: 1;
}

.brand p,
.eyebrow {
  color: var(--muted);
  font-size: 0.86rem;
}

.panel,
.card,
.table-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.88);
}

.panel {
  display: grid;
  gap: 14px;
  padding: 16px;
}

.panel h2,
.card h3,
.table-panel h3 {
  font-size: 0.95rem;
}

label {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 650;
}

select,
.file-input span {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 0 12px;
  color: var(--ink);
  background: #fff;
}

select:focus-visible,
button:focus-visible,
.file-input:focus-within span {
  outline: 3px solid rgba(31, 122, 77, 0.22);
  outline-offset: 2px;
}

.toggle-row {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 650;
}

.segmented {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f4f6f4;
}

.segmented button {
  min-height: 34px;
  border: 0;
  border-radius: 6px;
  color: var(--muted);
  background: transparent;
  cursor: pointer;
}

.segmented button.active {
  color: #fff;
  background: var(--teal);
}

.file-input {
  cursor: pointer;
}

.file-input input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.file-input span {
  display: grid;
  place-items: center;
  color: var(--teal);
  font-weight: 750;
}

.hidden {
  display: none !important;
}

.setup-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.setup-list li {
  display: grid;
  grid-template-columns: 10px 1fr;
  gap: 10px;
  color: #38413f;
  font-size: 0.9rem;
  line-height: 1.35;
}

.setup-list li::before {
  content: "";
  width: 8px;
  height: 8px;
  margin-top: 6px;
  border-radius: 50%;
  background: var(--green);
}

.run-button {
  min-height: 50px;
  border: 0;
  border-radius: 8px;
  color: #fff;
  background: var(--green);
  box-shadow: 0 12px 28px rgba(31, 122, 77, 0.22);
  font-weight: 800;
  cursor: pointer;
  transition:
    transform 160ms ease,
    box-shadow 160ms ease,
    opacity 160ms ease;
}

.run-button:active {
  transform: translateY(1px);
}

.run-button:disabled {
  cursor: wait;
  opacity: 0.86;
}

.run-button.loading {
  background: var(--teal);
}

.run-button.loading span::after {
  content: "";
  display: inline-block;
  width: 1.1em;
  text-align: left;
  animation: dots 1.1s steps(4, end) infinite;
}

.stage {
  display: grid;
  grid-template-rows: auto minmax(320px, 54vh) auto auto;
  gap: 18px;
  padding: 24px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.topbar h2 {
  margin-top: 4px;
  font-size: clamp(1.45rem, 2.3vw, 2.35rem);
}

.score-badge {
  min-width: 118px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 10px 14px;
  text-align: center;
  color: var(--teal);
  background: #fff;
  font-weight: 800;
}

.metric-strip {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.mini-badge {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 10px 12px;
  color: #40504c;
  background: rgba(255, 255, 255, 0.86);
  font-size: 0.84rem;
  font-weight: 800;
}

.viewer {
  position: relative;
  min-height: 320px;
  overflow: hidden;
  border: 1px solid rgba(24, 32, 31, 0.14);
  border-radius: 8px;
  background:
    linear-gradient(90deg, rgba(24, 32, 31, 0.08) 1px, transparent 1px),
    linear-gradient(rgba(24, 32, 31, 0.07) 1px, transparent 1px), #eef3f0;
  background-size: 48px 48px;
  box-shadow: var(--shadow);
}

#videoPreview,
#poseCanvas,
.sample-figure {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

#videoPreview {
  object-fit: contain;
  background: #111716;
  opacity: 0;
  transition: opacity 220ms ease;
}

#videoPreview.active,
#videoPreview[src] {
  opacity: 1;
}

#poseCanvas {
  z-index: 4;
}

.sample-figure {
  z-index: 2;
}

.machine {
  position: absolute;
  right: 16%;
  bottom: 12%;
  width: 28%;
  height: 72%;
  border-left: 12px solid rgba(22, 103, 122, 0.26);
  border-bottom: 12px solid rgba(22, 103, 122, 0.26);
  transform: skewX(-10deg);
}

.machine::after {
  content: "";
  position: absolute;
  left: -72%;
  bottom: 18%;
  width: 128%;
  height: 18px;
  border-radius: 999px;
  background: rgba(22, 103, 122, 0.26);
  transform: rotate(-17deg);
}

.person span {
  position: absolute;
  display: block;
  border-radius: 999px;
  background: var(--ink);
  transform-origin: center top;
}

.head {
  left: 48%;
  top: 21%;
  width: 46px;
  height: 46px;
  border-radius: 50% !important;
}

.torso {
  left: calc(48% + 19px);
  top: 30%;
  width: 18px;
  height: 130px;
  transform: rotate(10deg);
}

.arm {
  top: 35%;
  width: 13px;
  height: 96px;
}

.arm.left {
  left: 45%;
  transform: rotate(42deg);
}

.arm.right {
  left: 55%;
  transform: rotate(-34deg);
}

.leg {
  width: 18px;
  height: 130px;
}

.thigh-left {
  left: 48%;
  top: 52%;
  transform: rotate(56deg);
}

.shin-left {
  left: 39%;
  top: 65%;
  transform: rotate(-12deg);
}

.thigh-right {
  left: 54%;
  top: 52%;
  transform: rotate(39deg);
}

.shin-right {
  left: 50%;
  top: 65%;
  transform: rotate(-9deg);
}

.foot {
  bottom: 16%;
  width: 78px;
  height: 16px;
  background: var(--teal) !important;
}

.foot-left {
  left: 35%;
}

.foot-right {
  left: 48%;
}

.frame-note {
  position: absolute;
  right: 14px;
  bottom: 14px;
  z-index: 8;
  border-radius: 999px;
  padding: 9px 12px;
  color: #fff;
  background: rgba(24, 32, 31, 0.78);
  font-size: 0.82rem;
  font-weight: 750;
}

.dashboard {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.card {
  min-height: 190px;
  padding: 16px;
}

.timeline {
  display: grid;
  gap: 10px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.timeline li {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 10px;
  align-items: start;
  color: #404946;
  font-size: 0.92rem;
  opacity: 0;
  transform: translateY(7px);
  animation: rise-in 260ms ease forwards;
}

.timeline span {
  display: grid;
  width: 24px;
  height: 24px;
  place-items: center;
  border-radius: 50%;
  color: #fff;
  background: var(--teal);
  font-size: 0.78rem;
  font-weight: 800;
  transition: background 160ms ease;
}

.timeline li.active span {
  background: var(--amber);
  animation: soft-pulse 900ms ease-in-out infinite;
}

.timeline li.done span {
  background: var(--green);
}

.pulse-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--teal);
  animation: soft-pulse 900ms ease-in-out infinite;
}

.coach-output {
  margin-top: 14px;
  color: #323b39;
  font-size: 1rem;
  line-height: 1.5;
}

.coach-output strong {
  color: var(--green);
}

.table-panel {
  padding: 16px;
}

.comparison-panel,
.before-after {
  display: grid;
  gap: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.88);
}

.comparison-panel > div:first-child {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.comparison-panel h3,
.before-after h3 {
  font-size: 0.95rem;
}

#priorityCallout {
  max-width: 620px;
  color: #34413e;
  font-size: 0.94rem;
  line-height: 1.45;
}

#priorityCallout strong {
  color: var(--red);
}

.comparison-grid {
  display: grid;
  gap: 10px;
}

.compare-row {
  display: grid;
  grid-template-columns: minmax(130px, 1.05fr) repeat(3, minmax(120px, 1fr)) auto;
  gap: 10px;
  align-items: start;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  background: #fff;
}

.compare-row.priority,
.signal.priority {
  border-color: rgba(179, 63, 54, 0.55);
  box-shadow: inset 4px 0 0 rgba(179, 63, 54, 0.78);
}

.compare-row div {
  display: grid;
  gap: 4px;
}

.compare-row small,
.before-after-grid small {
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
}

.compare-row span {
  color: var(--muted);
  font-size: 0.82rem;
}

.compare-row strong {
  color: #26302e;
  font-size: 0.9rem;
  line-height: 1.35;
}

.before-after-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(120px, 1fr));
  gap: 12px;
}

.before-after-grid div {
  display: grid;
  gap: 5px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  background: #fff;
}

.before-after-grid strong {
  font-size: 1.4rem;
}

.before-after-grid span {
  color: var(--muted);
  font-size: 0.86rem;
}

.signal-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(130px, 1fr));
  gap: 12px;
  margin-top: 14px;
}

.signal {
  display: grid;
  gap: 5px;
  min-height: 86px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  background: #fff;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.signal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.signal b {
  font-size: 0.82rem;
}

.signal span {
  color: var(--muted);
  font-size: 0.88rem;
}

.signal.good {
  border-color: rgba(31, 122, 77, 0.34);
}

.signal.warn {
  border-color: rgba(179, 104, 29, 0.42);
}

.signal.bad {
  border-color: rgba(179, 63, 54, 0.38);
}

.severity {
  border-radius: 999px;
  padding: 4px 7px;
  font-size: 0.7rem !important;
  font-weight: 850;
}

.severity.good {
  color: var(--green);
  background: rgba(31, 122, 77, 0.12);
}

.severity.warn {
  color: var(--amber);
  background: rgba(179, 104, 29, 0.13);
}

.severity.bad {
  color: var(--red);
  background: rgba(179, 63, 54, 0.12);
}

.why-button {
  width: fit-content;
  min-height: 30px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0 10px;
  color: var(--teal);
  background: #fff;
  font-size: 0.78rem;
  font-weight: 850;
  cursor: pointer;
}

.why-button:hover {
  border-color: rgba(22, 103, 122, 0.42);
  background: rgba(22, 103, 122, 0.08);
}

.why-text {
  grid-column: 1 / -1;
  border-left: 3px solid var(--teal);
  padding-left: 10px;
  color: #3f4a47;
  font-size: 0.88rem;
  line-height: 1.45;
}

@keyframes dots {
  0% {
    content: "";
  }
  25% {
    content: ".";
  }
  50% {
    content: "..";
  }
  75%,
  100% {
    content: "...";
  }
}

@keyframes soft-pulse {
  0%,
  100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.08);
    opacity: 0.72;
  }
}

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

@media (max-width: 920px) {
  .app {
    grid-template-columns: 1fr;
  }

  .rail {
    border-right: 0;
    border-bottom: 1px solid rgba(24, 32, 31, 0.1);
  }

  .stage {
    grid-template-rows: auto minmax(300px, 48vh) auto auto;
  }

  .dashboard,
  .signal-grid,
  .before-after-grid {
    grid-template-columns: 1fr;
  }

  .compare-row {
    grid-template-columns: 1fr;
  }

  .comparison-panel > div:first-child {
    display: grid;
  }
}

@media (max-width: 560px) {
  .rail,
  .stage {
    padding: 16px;
  }

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

  .score-badge {
    min-width: 100%;
  }

  .metric-strip {
    width: 100%;
    justify-content: stretch;
  }

  .mini-badge {
    flex: 1 1 100%;
    text-align: center;
  }

  .head {
    width: 34px;
    height: 34px;
  }
}