/* ── Computer Vision Projects — Dark Theme ────────── */
:root {
  --bg:        #0b0b12;
  --surface:   #111119;
  --card:      #181822;
  --card-alt:  #1e1e2a;
  --border:    #262636;
  --border-lt: #333348;
  --primary:   #818cf8;
  --primary-d: #6366f1;
  --primary-bg:rgba(99,102,241,.08);
  --success:   #34d399;
  --success-bg:rgba(52,211,153,.12);
  --warning:   #fbbf24;
  --warning-bg:rgba(251,191,36,.10);
  --danger:    #f87171;
  --danger-bg: rgba(248,113,113,.12);
  --text:      #e2e8f0;
  --text-sec:  #94a3b8;
  --muted:     #64748b;
  --dim:       #334155;
  --radius:    10px;
  --radius-sm: 6px;
  --shadow:    0 2px 8px rgba(0,0,0,.25);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── Top bar ──────────────────────────────────────── */
#topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 20px;
  height: 52px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
/* Back button + mode pill (app screen topbar) */
.btn-home {
  display: flex;
  align-items: center;
  gap: 5px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-sec);
  font-size: 12px;
  padding: 5px 10px;
  cursor: pointer;
  transition: all .15s;
  white-space: nowrap;
}
.btn-home:hover { background: var(--card-alt); color: var(--text); }
.mode-pill {
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  white-space: nowrap;
}
/* App screen full-height wrapper */
#appScreen { display: flex; flex-direction: column; height: 100vh; }

/* Input action row (Example + Webcam buttons) */
.input-actions {
  display: flex;
  gap: 6px;
  padding: 6px 12px 10px;
  border-top: 1px solid var(--border);
}
.input-actions .btn {
  display: flex;
  align-items: center;
  gap: 5px;
  justify-content: center;
}

.topbar-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 12px;
}
.model-select {
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text-sec);
  padding: 5px 10px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  cursor: pointer;
}
.model-select:focus { outline: 1px solid var(--primary); }
.status {
  font-size: 11px;
  color: var(--muted);
  max-width: 260px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ── Main layout ──────────────────────────────────── */
main {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* ── Viewer (left) ────────────────────────────────── */
.viewer {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 10px;
  gap: 6px;
  min-width: 0;
}
.canvas-wrap {
  position: relative;
  flex: 1;
  width: 80%;
  align-self: center;
  background: #07070c;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.canvas-wrap canvas {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  object-fit: contain;
}
#overlay { z-index: 2; cursor: default; }
#display { z-index: 1; }
.placeholder {
  color: var(--muted);
  z-index: 3;
  pointer-events: none;
  text-align: center;
}
.placeholder.hidden { display: none; }
.placeholder-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.placeholder-inner svg { opacity: .4; }
.placeholder-inner p { font-size: 14px; font-weight: 500; }
.placeholder-inner span { font-size: 11px; color: var(--dim); }

/* Transport */
.transport { flex-shrink: 0; }
.progress-bar {
  width: 100%;
  height: 4px;
  background: var(--card);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 6px;
  cursor: pointer;
}
.progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--primary-d), var(--primary));
  transition: width .1s;
}
.transport-row {
  display: flex;
  align-items: center;
  gap: 8px;
}
.transport-btns {
  display: flex;
  gap: 4px;
}
.transport-btns .btn { display: flex; align-items: center; justify-content: center; }
.frame-info {
  font-size: 11px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  margin-left: auto;
}
.speed-label {
  font-size: 12px;
  color: var(--muted);
  display: flex;
  align-items: center;
}
.speed-label select {
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text-sec);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 11px;
}

/* ── Panel (right) ────────────────────────────────── */
.panel {
  width: 300px;
  flex-shrink: 0;
  background: var(--surface);
  border-left: 1px solid var(--border);
  padding: 10px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* Panel cards */
.panel-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.panel-card-header {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .8px;
  color: var(--muted);
  padding: 10px 12px 6px;
}
/* Options toggle button (padel) */
.btn-toggle-options {
  order: -2;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 100%;
  padding: 8px 12px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: background .15s, border-color .15s, color .15s;
}
.btn-toggle-options:hover {
  background: var(--surface);
  border-color: var(--primary);
  color: var(--text);
}
.btn-toggle-options.active {
  border-color: var(--primary);
  color: var(--primary);
}

.results-card {
  order: -1;
  flex: none;
  max-height: 40vh;
  display: flex;
  flex-direction: column;
  min-height: 0;
}
.panel.padel-focus .results-card {
  flex: 1;
  max-height: none;
}
.results-card .results-list {
  overflow-y: auto;
}

/* Upload */
.upload-area {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px;
  margin: 0 10px 10px;
  border: 2px dashed var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--muted);
  font-size: 12px;
  transition: all .15s;
}
.upload-area svg { flex-shrink: 0; opacity: .5; }
.upload-area:hover {
  border-color: var(--primary);
  color: var(--text);
  background: var(--primary-bg);
}
.upload-area.dragging {
  border-color: var(--primary);
  background: var(--primary-bg);
}
.example-btn {
  margin: 0 10px 10px;
  width: calc(100% - 20px);
  text-align: center;
}

/* Settings */
.setting-group {
  padding: 6px 12px 10px;
}
.setting-group + .setting-group {
  border-top: 1px solid var(--border);
}
.setting-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-sec);
  margin-bottom: 6px;
}
.setting-label.sub { margin-top: 8px; }
.setting-value {
  font-weight: 700;
  color: var(--primary);
  font-size: 12px;
}

/* Slider */
.slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  outline: none;
}
.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--primary);
  cursor: pointer;
  border: 2px solid var(--bg);
  box-shadow: 0 0 4px rgba(99,102,241,.4);
}
.slider::-moz-range-thumb {
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--primary);
  cursor: pointer;
  border: 2px solid var(--bg);
}

/* Buttons */
.btn {
  background: var(--card-alt);
  border: 1px solid var(--border);
  color: var(--text-sec);
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
  transition: all .15s;
  white-space: nowrap;
}
.btn:hover { background: var(--border); color: var(--text); }
.btn:disabled { opacity: 0.35; cursor: not-allowed; }
.btn.sm { padding: 5px 10px; font-size: 11px; }
.btn.accent {
  background: var(--primary-d);
  border-color: var(--primary);
  color: #fff;
}
.btn.accent:hover { background: var(--primary); }
.btn-row {
  display: flex;
  gap: 6px;
  align-items: center;
}

/* Scale row */
.scale-row {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 4px 0;
}
.scale-row input[type="number"] {
  width: 52px;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 4px 6px;
  border-radius: 4px;
  font-size: 11px;
}
.scale-axis-lbl {
  font-size: 10px;
  font-weight: 600;
  color: var(--muted);
  width: 48px;
  flex-shrink: 0;
}
.unit {
  font-size: 11px;
  color: var(--muted);
}
.hint {
  font-size: 10px;
  color: var(--muted);
  line-height: 1.4;
}

/* Sport section sub-labels */
.sport-section-label {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .6px;
  color: var(--text-sec);
  margin-bottom: 4px;
}

/* Status chips (net set, scale set) */
.status-chip {
  font-size: 10px;
  color: var(--muted);
  padding: 3px 8px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  margin: 3px 0 2px;
  display: inline-block;
}
.status-chip.chip-ok {
  color: var(--success);
  border-color: rgba(52,211,153,.3);
  background: var(--success-bg);
}

/* Profile save/load UI */
.profile-row {
  display: flex;
  gap: 5px;
  align-items: center;
  margin-top: 6px;
}
.example-select {
  width: 100%;
  background: var(--card-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 12px;
  padding: 6px 8px;
  margin-bottom: 6px;
  cursor: pointer;
}
.example-select:focus { outline: none; border-color: var(--primary); }

.profile-select {
  flex: 1;
  min-width: 0;
  background: var(--card-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 11px;
  padding: 5px 6px;
  cursor: pointer;
}
.profile-select:focus { outline: none; border-color: var(--primary); }
.profile-name-input {
  flex: 1;
  min-width: 0;
  background: var(--card-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 11px;
  padding: 5px 7px;
  outline: none;
}
.profile-name-input::placeholder { color: var(--muted); }
.profile-name-input:focus { border-color: var(--primary); }

/* Warning + danger button variants */
.btn.warning {
  background: rgba(251,191,36,.12);
  border-color: rgba(251,191,36,.3);
  color: var(--warning);
}
.btn.warning:hover {
  background: rgba(251,191,36,.22);
  color: #fde68a;
}
.btn.danger {
  background: var(--danger-bg);
  border-color: rgba(248,113,113,.3);
  color: var(--danger);
}
.btn.danger:hover {
  background: rgba(248,113,113,.22);
  color: #fca5a5;
}

/* ── Results ──────────────────────────────────────── */
.results-list {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 6px 8px 8px;
}

/* General / food rows */
.result-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  background: var(--card-alt);
  border-radius: var(--radius-sm);
  font-size: 12px;
  border-left: 3px solid var(--border);
  transition: background .1s;
}
.result-row:hover { background: var(--border); }
.result-row .label { flex: 1; font-weight: 500; }
.result-row .count {
  background: var(--border);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
  color: var(--text);
}
.result-row .kcal {
  color: var(--warning);
  font-size: 11px;
  font-weight: 700;
}
.result-total {
  display: flex;
  justify-content: space-between;
  padding: 8px 10px;
  background: var(--primary-d);
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 13px;
  color: #fff;
  margin-top: 2px;
}

/* Cafe table rows */
.table-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  background: var(--card-alt);
  border-radius: var(--radius-sm);
  font-size: 12px;
}
.table-row .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.dot.busy { background: var(--danger); box-shadow: 0 0 6px var(--danger-bg); }
.dot.free { background: var(--success); box-shadow: 0 0 6px var(--success-bg); }
.table-row .name { flex: 1; font-weight: 500; }
.table-row .badge {
  font-size: 10px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: .3px;
}
.badge.busy { background: var(--danger-bg); color: var(--danger); }
.badge.free { background: var(--success-bg); color: var(--success); }

/* Cafe summary */
.cafe-summary {
  display: flex;
  gap: 6px;
  margin-bottom: 4px;
}
.cafe-summary .pill {
  flex: 1;
  text-align: center;
  padding: 8px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 13px;
}
.pill.busy-pill { background: var(--danger-bg); color: var(--danger); }
.pill.free-pill { background: var(--success-bg); color: var(--success); }

/* Padel player cards */
.side-header {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .6px;
  padding: 5px 10px;
  border-radius: var(--radius-sm);
  margin-top: 2px;
}
.side-header.s1 { background: var(--success-bg); color: var(--success); }
.side-header.s2 { background: var(--primary-bg); color: var(--primary); }

.player-card {
  display: flex;
  gap: 8px;
  padding: 8px 10px;
  background: var(--card-alt);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--muted);
  transition: background .1s;
}
.player-card:hover { background: var(--border); }
.player-card.side1 { border-left-color: var(--success); }
.player-card.side2 { border-left-color: var(--primary); }

.player-card .body { flex: 1; }
.player-card .top-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.player-card .pid {
  font-weight: 700;
  font-size: 12px;
}
.player-card .badge-live {
  font-size: 9px;
  font-weight: 700;
  color: var(--success);
  background: var(--success-bg);
  padding: 1px 6px;
  border-radius: 3px;
}
.player-card .badge-lost {
  font-size: 9px;
  font-weight: 700;
  color: var(--muted);
  background: rgba(100,116,139,.15);
  padding: 1px 6px;
  border-radius: 3px;
}
.player-card .dist-row {
  display: flex;
  align-items: baseline;
  gap: 3px;
  margin: 3px 0 2px;
}
.player-card .dist-val {
  font-size: 20px;
  font-weight: 700;
  color: var(--warning);
}
.player-card .dist-unit {
  font-size: 11px;
  color: var(--muted);
}
.player-card .lost .dist-val {
  color: var(--muted);
}
.player-card .stat-row {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
}
.player-card .spd { color: #a78bfa; font-weight: 600; }
.player-card .tm  { color: var(--text-sec); }

/* Empty state placeholder */
.empty-hint {
  padding: 16px 12px;
  text-align: center;
  opacity: .5;
  font-size: 12px;
}

/* ── Scrollbar ────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--muted); }

/* ── Responsive ───────────────────────────────────── */
@media (max-width: 768px) {
  main { flex-direction: column; }
  .panel { width: 100%; max-height: 40vh; border-left: none; border-top: 1px solid var(--border); }
  .viewer { min-height: 50vh; }
}

/* ═══════════════════════════════════════════════════
   HOME SCREEN
═══════════════════════════════════════════════════ */
#homeScreen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  padding: 32px 16px;
}
.home-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 48px;
  width: 100%;
  max-width: 860px;
}

/* Hero */
.home-hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  text-align: center;
}
.home-logo {
  color: var(--primary);
  opacity: .9;
  margin-bottom: 4px;
}
.home-title {
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, #e2e8f0 30%, var(--primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.home-sub {
  font-size: 14px;
  color: var(--muted);
  letter-spacing: .2px;
}
.home-model-status {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
  font-size: 12px;
  color: var(--text-sec);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 5px 14px;
}
.model-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.model-dot.loading {
  background: var(--warning);
  animation: pulse-dot 1.2s ease-in-out infinite;
}
.model-dot.ready {
  background: var(--success);
  animation: none;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50%       { opacity: .3; }
}

/* Mode cards grid */
.mode-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  width: 100%;
}
@media (max-width: 600px) {
  .mode-cards { grid-template-columns: 1fr; }
}

.mode-card {
  display: flex;
  flex-direction: column;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  text-align: left;
  color: var(--text);
  transition: transform .18s, border-color .18s, box-shadow .18s, background .18s;
  position: relative;
  overflow: hidden;
  padding: 0;
}
.mode-card:hover:not(:disabled) {
  transform: translateY(-4px);
  box-shadow: 0 10px 30px rgba(0,0,0,.45);
}
.mode-card:disabled {
  opacity: .45;
  cursor: not-allowed;
  transform: none !important;
}

/* Per-mode accent colours */
.mode-card[data-mode="general"] { --mc: var(--primary); }
.mode-card[data-mode="food"]    { --mc: #34d399; }
.mode-card[data-mode="cafe"]    { --mc: #60a5fa; }
.mode-card[data-mode="padel"]   { --mc: #f472b6; }

.mode-card:hover:not(:disabled) {
  border-color: var(--mc);
}

/* Demo image */
.mode-card-img {
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: #07070c;
  border-bottom: 1px solid var(--border);
}
.mode-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .3s, filter .3s;
  filter: brightness(.85);
}
.mode-card:hover:not(:disabled) .mode-card-img img {
  transform: scale(1.04);
  filter: brightness(1);
}

/* Info bar below image */
.mode-card-info {
  padding: 14px 16px;
  border-top: 2px solid transparent;
  transition: border-color .18s;
}
.mode-card:hover:not(:disabled) .mode-card-info {
  border-top-color: var(--mc);
}
.mode-card-title {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 3px;
  letter-spacing: .1px;
}
.mode-card-desc {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.5;
}

/* About section */
.home-about {
  margin-top: 32px;
  padding: 20px 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 13px;
  color: var(--text-sec);
  line-height: 1.7;
  text-align: center;
}
.home-about-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
  letter-spacing: .5px;
  text-transform: uppercase;
}
.home-about-dev {
  margin-top: 10px;
  font-size: 12px;
  color: var(--muted);
}
.home-about a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
}
.home-about a:hover {
  text-decoration: underline;
}

/* Model reference section */
.home-reference {
  margin-top: 16px;
  padding: 20px 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 13px;
  color: var(--text-sec);
  line-height: 1.7;
  text-align: center;
}
.home-reference a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
}
.home-reference a:hover {
  text-decoration: underline;
}