/* =====================================================
   WoodScan — Global Styles
   Target: iPhone 12 Pro Safari (390x844pt)
   ===================================================== */

/* --- Reset & Variables --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  /* PureMark brand palette (落ち着いた木調) */
  --color-primary: #5c4a32;       /* 深みのある茶色 */
  --color-primary-light: #8b6f47; /* 明るい茶色 */
  --color-accent: #c8853a;        /* アンバー */
  --color-success: #4a7c59;       /* 緑 */
  --color-danger: #c0392b;        /* 赤 */
  --color-warning: #e67e22;       /* 橙 */
  --color-bg: #f8f5f0;            /* 温かみのあるオフホワイト */
  --color-card: #ffffff;
  --color-border: #ddd4c7;
  --color-text: #2c2416;
  --color-text-sub: #6b5a45;
  --color-text-hint: #9e8872;

  /* クラス別カラー */
  --class-normal: #4a7c59;
  --class-live-knot: #8b6f47;
  --class-dead-knot: #5c4a32;
  --class-crack: #c0392b;
  --class-resin: #c8853a;
  --class-marrow: #7d6b8a;
  --class-knot-missing: #d35400;
  --class-knot-with-crack: #922b21;

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;

  /* Typography */
  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-base: 16px;
  --font-size-md: 18px;
  --font-size-lg: 22px;
  --font-size-xl: 28px;

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;
}

/* --- Base --- */
html, body {
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, 'Hiragino Sans', 'Yu Gothic', sans-serif;
  font-size: var(--font-size-base);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
  overflow-x: hidden;
}

a {
  color: var(--color-accent);
}

.hidden {
  display: none !important;
}

/* --- Header --- */
.app-header {
  background: var(--color-primary);
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.header-inner {
  max-width: 640px;
  margin: 0 auto;
  padding: var(--spacing-sm) var(--spacing-md);
}

.app-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  letter-spacing: 0.02em;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-sm);
}

.title-icon {
  font-size: 20px;
}

.title-badge {
  font-size: var(--font-size-xs);
  background: var(--color-accent);
  color: #fff;
  padding: 2px 6px;
  border-radius: var(--radius-full);
  font-weight: 600;
  letter-spacing: 0.05em;
  vertical-align: middle;
}

/* Mode Tabs */
.mode-tabs {
  display: flex;
  gap: var(--spacing-xs);
}

.mode-tab {
  flex: 1;
  padding: 8px 12px;
  border: 2px solid rgba(255,255,255,0.3);
  border-radius: var(--radius-sm);
  background: transparent;
  color: rgba(255,255,255,0.7);
  font-size: var(--font-size-sm);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.mode-tab.active {
  background: rgba(255,255,255,0.2);
  color: #fff;
  border-color: rgba(255,255,255,0.7);
}

/* --- Main --- */
.app-main {
  max-width: 640px;
  margin: 0 auto;
  padding: var(--spacing-md);
  padding-bottom: 80px; /* footer height */
  min-height: calc(100vh - 120px);
}

/* Mode Panels */
.mode-panel {
  display: none;
}

.mode-panel.active {
  display: block;
}

/* --- Step Cards --- */
.step-card {
  background: var(--color-card);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  box-shadow: 0 2px 8px rgba(92,74,50,0.08);
  border: 1px solid var(--color-border);
}

.step-label {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--color-border);
}

/* --- Upload Area --- */
.upload-area {
  border: 3px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-xl) var(--spacing-md);
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  position: relative;
  background: var(--color-bg);
}

.upload-area:active {
  background: rgba(92,74,50,0.05);
  border-color: var(--color-primary-light);
}

.upload-area input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  width: 100%;
  height: 100%;
  cursor: pointer;
}

.upload-icon {
  font-size: 48px;
  margin-bottom: var(--spacing-sm);
}

.upload-text {
  font-size: var(--font-size-md);
  color: var(--color-text-sub);
  font-weight: 600;
}

/* --- Canvas Container --- */
.canvas-container {
  width: 100%;
  position: relative;
  background: #1a1a1a;
  border-radius: var(--radius-md);
  overflow: hidden;
  touch-action: none;
  margin-bottom: var(--spacing-md);
}

.canvas-container canvas {
  display: block;
  width: 100%;
  height: auto;
  touch-action: none;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 20px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-base);
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s;
  -webkit-user-select: none;
  user-select: none;
  letter-spacing: 0.02em;
}

.btn:active {
  transform: scale(0.97);
}

.btn:disabled {
  opacity: 0.4;
  pointer-events: none;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-primary-light);
}

.btn-secondary {
  background: var(--color-border);
  color: var(--color-text);
}

.btn-danger {
  background: var(--color-danger);
  color: #fff;
}

.btn-large {
  width: 100%;
  padding: 16px;
  font-size: var(--font-size-md);
  border-radius: var(--radius-md);
  margin-top: var(--spacing-md);
}

.btn-small {
  padding: 8px 16px;
  font-size: var(--font-size-sm);
}

.btn-tiny {
  padding: 4px 10px;
  font-size: var(--font-size-xs);
  border-radius: var(--radius-sm);
}

/* bbox controls */
.bbox-controls {
  display: flex;
  gap: var(--spacing-sm);
}

.bbox-controls .btn {
  flex: 1;
}

.hint-text {
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--color-text-hint);
  margin-top: var(--spacing-sm);
}

/* --- Result Display --- */
.result-display, .eval-result-display {
  padding: var(--spacing-lg);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  text-align: center;
}

.result-class {
  font-size: var(--font-size-xl);
  font-weight: 800;
  margin-bottom: var(--spacing-sm);
}

.result-confidence {
  font-size: var(--font-size-md);
  color: var(--color-text-sub);
  margin-bottom: var(--spacing-lg);
}

.result-bar-container {
  background: var(--color-border);
  border-radius: var(--radius-full);
  height: 10px;
  margin-bottom: var(--spacing-xs);
  overflow: hidden;
}

.result-bar {
  height: 100%;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  transition: width 0.5s ease;
}

.result-bar-label {
  display: flex;
  justify-content: space-between;
  font-size: var(--font-size-xs);
  color: var(--color-text-sub);
  margin-bottom: var(--spacing-sm);
}

.result-correct {
  font-size: var(--font-size-lg);
  font-weight: 700;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-sm);
  margin-top: var(--spacing-md);
}

.result-correct.correct {
  background: rgba(74,124,89,0.15);
  color: var(--class-normal);
}

.result-correct.incorrect {
  background: rgba(192,57,43,0.1);
  color: var(--color-danger);
}

.result-controls {
  margin-top: var(--spacing-md);
}

/* --- Model Status --- */
.model-status {
  text-align: center;
  padding: var(--spacing-md);
  color: var(--color-text-sub);
  font-size: var(--font-size-sm);
}

.model-status.hidden {
  display: none !important;
}

.model-status .status-icon {
  font-size: 24px;
  display: block;
  margin-bottom: var(--spacing-xs);
}

.model-status .status-icon.spinning {
  animation: spin 1.5s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.model-status .status-text {
  margin-bottom: var(--spacing-sm);
}

/* --- Progress Bar --- */
.progress-bar {
  height: 6px;
  background: var(--color-border);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-top: var(--spacing-xs);
}

.progress-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  transition: width 0.3s ease;
}

/* --- Eval Mode --- */

/* Idle */
.eval-idle {
  padding-top: var(--spacing-lg);
}

.eval-start-card {
  background: var(--color-card);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  text-align: center;
  box-shadow: 0 2px 8px rgba(92,74,50,0.08);
  border: 1px solid var(--color-border);
}

.eval-icon {
  font-size: 56px;
  margin-bottom: var(--spacing-md);
}

.eval-title {
  font-size: var(--font-size-lg);
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.eval-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-sub);
  line-height: 1.6;
  margin-bottom: var(--spacing-lg);
}

.eval-stats-preview {
  background: var(--color-bg);
  border-radius: var(--radius-sm);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-sm);
  color: var(--color-text-sub);
  min-height: 40px;
}

/* Session */
.eval-session {
  display: block;
}

.eval-progress-bar {
  background: var(--color-card);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
  border: 1px solid var(--color-border);
}

.eval-progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-sm);
}

.eval-progress-label {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-primary);
}

.eval-sample-area {
  background: var(--color-card);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: 0 2px 8px rgba(92,74,50,0.08);
  border: 1px solid var(--color-border);
}

.eval-step {
  display: block;
}

/* GT Class Grid */
.gt-class-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.gt-class-btn {
  padding: 14px 10px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  font-weight: 600;
  cursor: pointer;
  text-align: center;
  transition: all 0.15s;
  -webkit-user-select: none;
  user-select: none;
}

.gt-class-btn:active {
  transform: scale(0.97);
}

.gt-class-btn.selected {
  border-color: var(--color-primary);
  background: var(--color-primary);
  color: #fff;
}

.selected-gt {
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--color-text-sub);
  min-height: 24px;
  margin-bottom: var(--spacing-sm);
}

/* --- Summary / Aggregation --- */
.eval-summary {
  display: block;
}

.summary-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
}

.summary-title {
  font-size: var(--font-size-lg);
  font-weight: 800;
  color: var(--color-primary);
}

.summary-overall {
  background: var(--color-card);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  text-align: center;
  margin-bottom: var(--spacing-md);
  box-shadow: 0 2px 8px rgba(92,74,50,0.08);
  border: 1px solid var(--color-border);
}

.summary-overall-accuracy {
  font-size: 56px;
  font-weight: 900;
  color: var(--color-primary);
  line-height: 1;
}

.summary-overall-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-sub);
  margin-top: var(--spacing-xs);
}

.summary-overall-count {
  font-size: var(--font-size-sm);
  color: var(--color-text-hint);
  margin-top: var(--spacing-xs);
}

.summary-section {
  background: var(--color-card);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  box-shadow: 0 2px 8px rgba(92,74,50,0.08);
  border: 1px solid var(--color-border);
}

.summary-section h3 {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid var(--color-border);
}

/* Per-class table */
.per-class-table {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.per-class-row {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.per-class-name {
  width: 120px;
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-text);
  flex-shrink: 0;
}

.per-class-bar-wrap {
  flex: 1;
  position: relative;
}

.per-class-bar-bg {
  height: 20px;
  background: var(--color-border);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.per-class-bar-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width 0.5s ease;
  min-width: 2px;
}

.per-class-count {
  width: 60px;
  text-align: right;
  font-size: var(--font-size-xs);
  color: var(--color-text-sub);
  flex-shrink: 0;
}

/* Confusion matrix */
.confusion-matrix-container {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.confusion-matrix {
  display: inline-block;
  min-width: 100%;
}

.confusion-matrix table {
  border-collapse: collapse;
  font-size: var(--font-size-xs);
  width: 100%;
}

.confusion-matrix th {
  background: var(--color-primary);
  color: #fff;
  padding: 4px 6px;
  text-align: center;
  font-weight: 600;
  white-space: nowrap;
}

.confusion-matrix th.row-header {
  text-align: right;
  background: var(--color-primary-light);
}

.confusion-matrix td {
  padding: 4px 6px;
  text-align: center;
  border: 1px solid var(--color-border);
  min-width: 32px;
}

.confusion-matrix td.diagonal {
  background: rgba(74,124,89,0.2);
  font-weight: 700;
  color: var(--class-normal);
}

.confusion-matrix td.off-diagonal {
  background: rgba(192,57,43,0.08);
  color: var(--color-danger);
}

.confusion-matrix td.zero {
  color: var(--color-text-hint);
}

/* Pred dist chart */
.pred-dist-chart {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

/* Summary actions */
.summary-actions {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

/* --- Sample list (個別サンプル一覧) --- */
.sample-list-row {
  display: flex;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm);
  border-bottom: 1px solid var(--color-border);
  align-items: flex-start;
}

.sample-list-row:last-child {
  border-bottom: none;
}

.sample-thumb {
  width: 80px;
  height: 80px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
}

.sample-thumb-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.sample-thumb-na {
  font-size: var(--font-size-xs);
  color: var(--color-text-hint);
  text-align: center;
  padding: var(--spacing-xs);
}

.sample-meta {
  flex: 1;
  min-width: 0;
}

.sample-meta-id {
  font-size: var(--font-size-xs);
  color: var(--color-text-hint);
  margin-bottom: 2px;
}

.sample-meta-judge {
  font-size: var(--font-size-sm);
  font-weight: 700;
  margin-bottom: 4px;
}

.sample-meta-judge.sample-correct {
  color: var(--color-success);
}

.sample-meta-judge.sample-incorrect {
  color: var(--color-danger);
}

.sample-meta-pred {
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sample-meta-gt,
.sample-meta-conf {
  font-size: var(--font-size-xs);
  color: var(--color-text-sub);
  margin-bottom: 1px;
}

/* --- History --- */
.eval-history {
  display: block;
}

.history-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
}

.history-header h2 {
  font-size: var(--font-size-lg);
  font-weight: 800;
  color: var(--color-primary);
}

.history-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.history-item {
  background: var(--color-card);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: all 0.15s;
}

.history-item:active {
  background: var(--color-bg);
}

.history-item-date {
  font-size: var(--font-size-xs);
  color: var(--color-text-hint);
  margin-bottom: var(--spacing-xs);
}

.history-item-stats {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-primary);
}

.history-actions {
  margin-top: var(--spacing-lg);
}

/* --- Inference Overlay --- */
.inference-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 999;
}

.inference-overlay.hidden {
  display: none !important;
}

.inference-spinner {
  font-size: 48px;
  animation: spin 1s linear infinite;
  color: #fff;
  margin-bottom: var(--spacing-md);
}

.inference-text {
  color: #fff;
  font-size: var(--font-size-md);
  font-weight: 600;
}

/* --- Toast --- */
.toast {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(44,36,22,0.92);
  color: #fff;
  padding: 10px 20px;
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 600;
  z-index: 1000;
  pointer-events: none;
  transition: opacity 0.3s;
}

.toast.hidden {
  display: none !important;
}

/* --- Footer --- */
.app-footer {
  background: var(--color-card);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-sm) var(--spacing-md);
  text-align: center;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 50;
}

.app-footer small {
  color: var(--color-text-hint);
  font-size: var(--font-size-xs);
}

/* --- Eval idle stats --- */
.eval-stats-preview-acc {
  font-size: var(--font-size-lg);
  font-weight: 800;
  color: var(--color-primary);
}

/* --- モデル選択 --- */
.model-select-wrap {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) 0;
}

.model-select-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-sub);
  white-space: nowrap;
  font-weight: 600;
  min-width: 4.5em;
}

.model-select {
  flex: 1;
  appearance: none;
  -webkit-appearance: none;
  background: var(--color-bg) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236b5a45' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E") no-repeat right 10px center;
  background-size: 12px 8px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 8px 32px 8px 10px;
  font-size: var(--font-size-sm);
  color: var(--color-text);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.model-select:focus {
  outline: none;
  border-color: var(--color-accent);
}

.model-select:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.model-select-card {
  padding: var(--spacing-sm) var(--spacing-md);
  margin-bottom: 0;
}

.eval-session-model {
  font-size: var(--font-size-xs);
  color: var(--color-text-hint);
  margin-top: 2px;
  padding-bottom: 4px;
}

/* --- Responsive (tablet / PC) --- */
@media (min-width: 640px) {
  .app-main {
    padding: var(--spacing-xl) var(--spacing-lg);
    padding-bottom: 80px;
  }

  .gt-class-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .summary-actions {
    flex-direction: row;
  }

  .summary-actions .btn {
    flex: 1;
  }

  .sample-thumb {
    width: 100px;
    height: 100px;
  }
}