/* V2 In My Gym — frontend styles */

:root {
  --bg: #0a0a0c;
  --bg-2: #0f0f13;
  --surface: #141419;
  --surface-2: #1b1b22;
  --surface-3: #23232c;
  --line: rgba(255, 255, 255, 0.08);
  --line-2: rgba(255, 255, 255, 0.16);
  --text: #f5f4f0;
  --muted: #a0a0ab;
  --dim: #6b6b76;
  --accent: #ff4d1c;
  --accent-2: #ff8a3d;
  --accent-soft: rgba(255, 77, 28, 0.14);
  --accent-glow: rgba(255, 96, 40, 0.35);
  --start: #3ddc84;
  --hand: #4da3ff;
  --finish: #ff4b4b;
  --foot: #ffd23f;
  --volume: #c77dff;
  --ok: #3ddc84;
  --warn: #ffb547;
  --radius: 18px;
  --radius-sm: 10px;
  --font: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --display: "Bricolage Grotesque", "Inter", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --nav-h: 64px;
  color-scheme: dark;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.55;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Ambient background: warm glow + faint grid */
.bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(900px 520px at 50% -120px, rgba(255, 96, 40, 0.22), transparent 70%),
    radial-gradient(700px 400px at 100% 40%, rgba(77, 163, 255, 0.05), transparent 70%),
    var(--bg);
}
.bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 70% 55% at 50% 0%, #000 20%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 70% 55% at 50% 0%, #000 20%, transparent 100%);
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  color: inherit;
  cursor: pointer;
  border: 0;
  background: none;
  padding: 0;
}
button:disabled {
  cursor: not-allowed;
}
:focus-visible {
  outline: 2px solid var(--accent-2);
  outline-offset: 2px;
  border-radius: 6px;
}

.wrap {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

/* ── Nav ──────────────────────────────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--nav-h);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  background: rgba(10, 10, 12, 0.62);
  border-bottom: 1px solid var(--line);
}
.nav .wrap {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--display);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.01em;
}
.brand img {
  width: 34px;
  height: 34px;
  object-fit: contain;
}
.brand span {
  color: var(--muted);
  font-weight: 500;
}
.nav-right {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 13.5px;
  color: var(--muted);
}
.nav-right a:hover {
  color: var(--text);
}
.status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 11px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.02em;
  color: var(--muted);
}
.status .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--warn);
  box-shadow: 0 0 0 0 rgba(255, 181, 71, 0.6);
  animation: ping 1.6s ease-out infinite;
}
.status.ready .dot {
  background: var(--ok);
  animation: none;
  box-shadow: 0 0 10px rgba(61, 220, 132, 0.6);
}
.status.error .dot {
  background: var(--finish);
  animation: none;
}
@keyframes ping {
  0% { box-shadow: 0 0 0 0 rgba(255, 181, 71, 0.55); }
  100% { box-shadow: 0 0 0 9px rgba(255, 181, 71, 0); }
}

/* ── Hero ─────────────────────────────────────────────────────────── */
.hero {
  text-align: center;
  padding: 64px 0 40px;
}
.hero .logo {
  width: 132px;
  height: 132px;
  object-fit: contain;
  filter: drop-shadow(0 18px 40px rgba(255, 96, 40, 0.28));
  animation: rise 0.9s cubic-bezier(0.2, 0.8, 0.2, 1) both;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  animation: rise 0.9s 0.05s cubic-bezier(0.2, 0.8, 0.2, 1) both;
}
.eyebrow i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
}
.hero h1 {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(2.8rem, 7.2vw, 5.4rem);
  line-height: 0.98;
  letter-spacing: -0.035em;
  margin: 16px auto 18px;
  max-width: 14ch;
  animation: rise 0.9s 0.1s cubic-bezier(0.2, 0.8, 0.2, 1) both;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(120deg, var(--accent) 0%, var(--accent-2) 60%, #ffd08a 120%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero p.lede {
  max-width: 560px;
  margin: 0 auto;
  font-size: 17px;
  color: var(--muted);
  animation: rise 0.9s 0.15s cubic-bezier(0.2, 0.8, 0.2, 1) both;
}
.cta-row {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 28px;
  flex-wrap: wrap;
  animation: rise 0.9s 0.2s cubic-bezier(0.2, 0.8, 0.2, 1) both;
}
.stats {
  display: inline-flex;
  margin-top: 40px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.02);
  overflow: hidden;
  animation: rise 0.9s 0.25s cubic-bezier(0.2, 0.8, 0.2, 1) both;
}
.stat {
  padding: 14px 26px;
  border-right: 1px solid var(--line);
  text-align: left;
}
.stat:last-child {
  border-right: 0;
}
.stat b {
  display: block;
  font-family: var(--display);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
}
.stat span {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--dim);
}
@keyframes rise {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: none; }
}

/* ── Buttons ──────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 20px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 14.5px;
  letter-spacing: -0.005em;
  border: 1px solid var(--line-2);
  background: var(--surface-2);
  color: var(--text);
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease, box-shadow 0.2s ease, opacity 0.15s;
  white-space: nowrap;
}
.btn:hover {
  background: var(--surface-3);
  border-color: rgba(255, 255, 255, 0.24);
  transform: translateY(-1px);
}
.btn:active {
  transform: translateY(0);
}
.btn.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-color: transparent;
  color: #fff;
  box-shadow: 0 8px 28px -8px var(--accent-glow), inset 0 1px 0 rgba(255, 255, 255, 0.25);
}
.btn.primary:hover {
  box-shadow: 0 12px 34px -8px var(--accent-glow), inset 0 1px 0 rgba(255, 255, 255, 0.25);
  filter: brightness(1.05);
}
.btn.primary:disabled {
  background: var(--surface-3);
  color: var(--dim);
  box-shadow: none;
  transform: none;
  filter: none;
}
.btn.ghost {
  background: transparent;
}
.btn.sm {
  height: 36px;
  padding: 0 13px;
  font-size: 13px;
  border-radius: 10px;
}
.btn.icon {
  width: 36px;
  padding: 0;
}
.btn svg {
  width: 17px;
  height: 17px;
  flex: none;
}
.btn.big {
  height: 54px;
  width: 100%;
  font-size: 16px;
  border-radius: 14px;
}

/* ── Studio ───────────────────────────────────────────────────────── */
.studio {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) 400px;
  gap: 20px;
  align-items: start;
  padding: 24px 0 40px;
}
.stage {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: hidden;
  min-height: 520px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 30px 80px -40px rgba(0, 0, 0, 0.8);
}
.stage.drag {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft), 0 30px 80px -40px rgba(0, 0, 0, 0.8);
}

/* Empty state */
.dropzone {
  width: 100%;
  min-height: 520px;
  padding: 48px 28px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 8px;
}
.dropzone .art {
  width: 84px;
  height: 84px;
  border-radius: 24px;
  display: grid;
  place-items: center;
  background: linear-gradient(160deg, var(--surface-2), var(--surface));
  border: 1px solid var(--line-2);
  box-shadow: 0 20px 50px -20px rgba(0, 0, 0, 0.8);
  margin-bottom: 12px;
}
.dropzone .art svg {
  width: 36px;
  height: 36px;
  color: var(--accent-2);
}
.dropzone h2 {
  font-family: var(--display);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0;
}
.dropzone p {
  margin: 0;
  color: var(--muted);
  max-width: 380px;
}
.dropzone .actions {
  display: flex;
  gap: 10px;
  margin-top: 18px;
  flex-wrap: wrap;
  justify-content: center;
}
.demo-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 26px;
  flex-wrap: wrap;
  justify-content: center;
  color: var(--dim);
  font-size: 13px;
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 34px;
  padding: 0 12px 0 6px;
  border-radius: 999px;
  border: 1px solid var(--line-2);
  background: var(--surface-2);
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  transition: border-color 0.15s, transform 0.15s, background 0.15s;
}
.chip img {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  object-fit: cover;
}
.chip:hover {
  border-color: var(--accent);
  background: var(--surface-3);
  transform: translateY(-1px);
}

/* Canvas */
.canvas-wrap {
  position: relative;
  width: 100%;
  display: flex;
  justify-content: center;
  background: #000;
}
#wall {
  display: block;
  cursor: crosshair;
  touch-action: pan-y pinch-zoom;
  user-select: none;
  -webkit-user-select: none;
}
.stage-tools {
  position: absolute;
  top: 12px;
  left: 12px;
  right: 12px;
  display: flex;
  justify-content: space-between;
  gap: 8px;
  pointer-events: none;
}
.stage-tools > * {
  pointer-events: auto;
}
.glass {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 36px;
  padding: 0 12px;
  border-radius: 10px;
  background: rgba(12, 12, 16, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  transition: background 0.15s, border-color 0.15s;
}
button.glass:hover {
  background: rgba(30, 30, 38, 0.85);
  border-color: rgba(255, 255, 255, 0.3);
}
button.glass:disabled {
  opacity: 0.4;
}
.glass svg {
  width: 16px;
  height: 16px;
}
.glass.count b {
  font-family: var(--mono);
  color: var(--accent-2);
}
.tools-group {
  display: flex;
  gap: 8px;
}
.stage-hint {
  position: absolute;
  left: 50%;
  bottom: 14px;
  transform: translateX(-50%);
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(12, 12, 16, 0.78);
  border: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  font-size: 12.5px;
  color: var(--muted);
  white-space: nowrap;
  pointer-events: none;
  transition: opacity 0.3s;
}
.stage-hint b {
  color: var(--text);
  font-weight: 600;
}
.stage-hint.hidden {
  opacity: 0;
}
.stage-loading {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(10, 10, 12, 0.6);
  backdrop-filter: blur(4px);
  font-size: 14px;
  color: var(--muted);
  gap: 10px;
}

/* ── Panel ────────────────────────────────────────────────────────── */
.panel {
  position: sticky;
  top: calc(var(--nav-h) + 20px);
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 18px 18px 16px;
}
.step {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.step .n {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--accent-2);
  padding: 3px 8px;
  border-radius: 6px;
  background: var(--accent-soft);
}
.step h3 {
  margin: 0;
  font-family: var(--display);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.step .meta {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--dim);
}
.card p.help {
  margin: 0 0 12px;
  font-size: 13px;
  color: var(--muted);
}

/* Hold list */
.holds {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 300px;
  overflow: auto;
  margin: 0 -6px;
  padding: 0 6px;
  scrollbar-width: thin;
  scrollbar-color: var(--surface-3) transparent;
}
.hold-row {
  display: grid;
  grid-template-columns: 40px 1fr auto;
  align-items: center;
  gap: 10px;
  padding: 6px;
  border-radius: 12px;
  border: 1px solid transparent;
  transition: background 0.15s, border-color 0.15s;
  animation: rise 0.35s cubic-bezier(0.2, 0.8, 0.2, 1) both;
}
.hold-row:hover,
.hold-row.hi {
  background: var(--surface-2);
  border-color: var(--line);
}
.hold-row .thumb {
  width: 40px;
  height: 40px;
  border-radius: 9px;
  object-fit: cover;
  background: var(--surface-3);
  border: 2px solid var(--role, var(--hand));
  display: block;
}
.hold-row .thumb.pending {
  background: linear-gradient(90deg, var(--surface-2), var(--surface-3), var(--surface-2));
  background-size: 200% 100%;
  animation: shimmer 1.1s linear infinite;
}
@keyframes shimmer {
  from { background-position: 200% 0; }
  to { background-position: -200% 0; }
}
.hold-row .num {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 4px;
}
.hold-row .num b {
  color: var(--text);
}
.roles {
  display: flex;
  gap: 3px;
}
.roles button {
  height: 22px;
  padding: 0 7px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 600;
  color: var(--dim);
  border: 1px solid transparent;
  transition: background 0.12s, color 0.12s, border-color 0.12s;
}
.roles button:hover {
  color: var(--text);
  background: var(--surface-3);
}
.roles button.on {
  color: #0b0b0d;
  background: var(--c);
  border-color: var(--c);
}
.hold-row .rm {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  color: var(--dim);
  transition: background 0.12s, color 0.12s;
}
.hold-row .rm:hover {
  color: var(--finish);
  background: rgba(255, 75, 75, 0.12);
}
.hold-row .rm svg {
  width: 14px;
  height: 14px;
}
.empty-holds {
  padding: 14px 6px 4px;
  color: var(--dim);
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
}
.legend span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11.5px;
  color: var(--muted);
  padding: 3px 8px 3px 6px;
  border-radius: 999px;
  border: 1px solid var(--line);
}
.legend i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c);
}

/* Angle */
.angle {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 14px;
  align-items: center;
}
.angle svg {
  width: 72px;
  height: 64px;
  overflow: visible;
}
.angle .wall-line {
  transition: transform 0.25s cubic-bezier(0.2, 0.8, 0.2, 1);
  transform-origin: 62px 56px;
}
.angle-val {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 6px;
}
.angle-val b {
  font-family: var(--display);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.angle-val span {
  font-size: 12.5px;
  color: var(--muted);
}
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 28px;
  background: transparent;
  margin: 0;
}
input[type="range"]::-webkit-slider-runnable-track {
  height: 6px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent) var(--pct, 40%), var(--surface-3) var(--pct, 40%));
}
input[type="range"]::-moz-range-track {
  height: 6px;
  border-radius: 999px;
  background: var(--surface-3);
}
input[type="range"]::-moz-range-progress {
  height: 6px;
  border-radius: 999px;
  background: var(--accent);
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  margin-top: -7px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--accent);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
  cursor: grab;
}
input[type="range"]::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--accent);
  cursor: grab;
}
.ticks {
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--dim);
  padding: 0 4px;
}

/* Grade button + result */
.grade-card {
  padding-top: 16px;
}
.grade-card .note {
  margin: 10px 0 0;
  font-size: 12.5px;
  color: var(--dim);
  text-align: center;
}
.spinner {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.25);
  border-top-color: #fff;
  animation: spin 0.8s linear infinite;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

.result {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255, 120, 60, 0.35);
  background:
    radial-gradient(420px 220px at 50% 0%, rgba(255, 96, 40, 0.22), transparent 70%),
    var(--surface);
  text-align: center;
  animation: pop 0.6s cubic-bezier(0.2, 0.8, 0.2, 1) both;
}
@keyframes pop {
  from { opacity: 0; transform: translateY(14px) scale(0.98); }
  to { opacity: 1; transform: none; }
}
.result .label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}
.result .grade {
  font-family: var(--display);
  font-size: clamp(4.4rem, 12vw, 6.4rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.05em;
  margin: 6px 0 4px;
  background: linear-gradient(120deg, #fff 0%, #ffd9c2 35%, var(--accent-2) 70%, var(--accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 10px 30px rgba(255, 96, 40, 0.35));
}
.result .range {
  color: var(--muted);
  font-size: 13.5px;
}
.result .range b {
  color: var(--text);
  font-weight: 600;
}
.scale {
  margin: 18px 0 6px;
}
.scale .bar {
  position: relative;
  height: 8px;
  border-radius: 999px;
  background: var(--surface-3);
  overflow: visible;
}
.scale .band {
  position: absolute;
  top: 0;
  bottom: 0;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(255, 138, 61, 0.35), rgba(255, 77, 28, 0.55));
  transition: left 0.6s cubic-bezier(0.2, 0.8, 0.2, 1), width 0.6s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.scale .pin {
  position: absolute;
  top: 50%;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--accent);
  transform: translate(-50%, -50%);
  box-shadow: 0 0 0 4px rgba(255, 77, 28, 0.25), 0 4px 12px rgba(0, 0, 0, 0.5);
  transition: left 0.6s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.scale .ticks {
  margin-top: 8px;
}
.result .facts {
  display: flex;
  justify-content: center;
  gap: 14px;
  margin-top: 12px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--dim);
  flex-wrap: wrap;
}
.divider {
  height: 1px;
  background: var(--line);
  margin: 16px 0 14px;
}
.result h4 {
  margin: 0 0 4px;
  font-family: var(--display);
  font-size: 15px;
  font-weight: 700;
}
.result .sub {
  margin: 0 0 10px;
  font-size: 12.5px;
  color: var(--muted);
}
.grade-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
}
.grade-grid button {
  height: 32px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--surface-2);
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  transition: background 0.12s, color 0.12s, border-color 0.12s, transform 0.12s;
}
.grade-grid button:hover {
  color: var(--text);
  border-color: var(--line-2);
  transform: translateY(-1px);
}
.grade-grid button.pred {
  border-color: rgba(255, 138, 61, 0.5);
  color: var(--accent-2);
}
.grade-grid button.sel {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.verdict {
  margin-top: 12px;
  padding: 12px 14px;
  border-radius: 12px;
  background: var(--surface-2);
  border: 1px solid var(--line);
  font-size: 14px;
  animation: rise 0.4s cubic-bezier(0.2, 0.8, 0.2, 1) both;
}
.verdict b {
  display: block;
  font-family: var(--display);
  font-size: 18px;
  letter-spacing: -0.01em;
  margin-bottom: 2px;
}
.verdict.soft b { color: var(--accent-2); }
.verdict.stiff b { color: var(--hand); }
.verdict.fair b { color: var(--ok); }
.result-actions {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-top: 14px;
}

/* ── How it works ─────────────────────────────────────────────────── */
.how {
  padding: 40px 0 60px;
}
.how h2 {
  font-family: var(--display);
  font-size: clamp(1.8rem, 3.6vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin: 0 0 6px;
}
.how .intro {
  color: var(--muted);
  margin: 0 0 24px;
  max-width: 620px;
}
.how-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.how-card {
  position: relative;
  padding: 22px 20px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--surface-2), var(--surface));
  overflow: hidden;
}
.how-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 138, 61, 0.6), transparent);
}
.how-card .k {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--accent-2);
  margin-bottom: 12px;
}
.how-card h3 {
  margin: 0 0 8px;
  font-family: var(--display);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.how-card p {
  margin: 0;
  color: var(--muted);
  font-size: 13.5px;
}
.how-card .tag {
  display: inline-block;
  margin-top: 14px;
  padding: 4px 9px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
}
.how-card svg {
  position: absolute;
  right: 14px;
  top: 14px;
  width: 40px;
  height: 40px;
  color: rgba(255, 255, 255, 0.08);
}

/* ── Footer ───────────────────────────────────────────────────────── */
footer {
  border-top: 1px solid var(--line);
  padding: 26px 0 40px;
  color: var(--dim);
  font-size: 13px;
}
footer .wrap {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
footer a {
  color: var(--muted);
}
footer a:hover {
  color: var(--text);
}
footer .links {
  display: flex;
  gap: 18px;
}

/* ── Toast ────────────────────────────────────────────────────────── */
.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translate(-50%, 20px);
  padding: 11px 16px;
  border-radius: 12px;
  background: #1d1d24;
  border: 1px solid var(--line-2);
  box-shadow: 0 20px 50px -10px rgba(0, 0, 0, 0.8);
  font-size: 13.5px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s, transform 0.25s;
  z-index: 100;
  max-width: calc(100% - 32px);
}
.toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}
.toast.err {
  border-color: rgba(255, 75, 75, 0.5);
}

.hidden {
  display: none !important;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

/* ── Responsive ───────────────────────────────────────────────────── */
@media (max-width: 960px) {
  .studio {
    grid-template-columns: 1fr;
  }
  .panel {
    position: static;
  }
  .stage,
  .dropzone {
    min-height: 420px;
  }
  .how-grid {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 640px) {
  .wrap {
    width: calc(100% - 24px);
  }
  .hero {
    padding: 40px 0 28px;
  }
  .hero .logo {
    width: 104px;
    height: 104px;
  }
  .nav-right .link {
    display: none;
  }
  .stats {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    width: 100%;
  }
  .stat {
    padding: 12px 10px;
    text-align: center;
  }
  .stat b {
    font-size: 17px;
  }
  .stage,
  .dropzone {
    min-height: 360px;
  }
  .stage-hint {
    display: none;
  }
  .grade-grid {
    grid-template-columns: repeat(5, 1fr);
  }
  .eyebrow {
    font-size: 10px;
    letter-spacing: 0.1em;
    max-width: 300px;
    text-align: left;
  }
  .eyebrow i {
    flex: none;
  }
  .hero h1 {
    font-size: clamp(2.6rem, 13vw, 3.4rem);
  }
}
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html {
    scroll-behavior: auto;
  }
}