/* ============================================
   工事書類ナビ v1.1 — Design System
   ============================================ */

:root {
  --bg-primary: #0f1117;
  --bg-secondary: #181b24;
  --bg-card: #1e2130;
  --bg-card-hover: #252839;
  --bg-input: #14161e;
  --border: #2a2d3a;
  --border-hover: #3d4155;
  --accent: #f39c12;
  --accent-hover: #e67e22;
  --accent-glow: rgba(243, 156, 18, 0.15);
  --accent-text: #fbbf24;
  --success: #22c55e;
  --success-bg: rgba(34, 197, 94, 0.1);
  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.1);
  --danger: #ef4444;
  --important: #f97316;
  --important-bg: rgba(249, 115, 22, 0.08);
  --info: #6366f1;
  --info-bg: rgba(99, 102, 241, 0.1);
  --text-primary: #f0f1f5;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  --text-accent: var(--accent-text);
  --font-family: 'Inter', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 20px var(--accent-glow);
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: var(--font-family);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(243, 156, 18, 0.06), transparent),
    radial-gradient(ellipse 60% 40% at 80% 100%, rgba(243, 156, 18, 0.03), transparent);
  pointer-events: none;
  z-index: 0;
}

/* ============ Header ============ */
#app-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(15, 17, 23, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  max-width: 1100px; margin: 0 auto;
  padding: var(--space-md) var(--space-xl);
  display: flex; align-items: center; justify-content: space-between;
}
.logo { display: flex; align-items: center; gap: var(--space-sm); }
.logo-icon { font-size: 1.5rem; }
.logo h1 {
  font-size: 1.25rem; font-weight: 700;
  background: linear-gradient(135deg, var(--text-primary), var(--accent-text));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.header-meta { font-size: 0.8rem; color: var(--text-muted); display: flex; align-items: center; gap: var(--space-md); }
.header-meta .save-indicator { display: flex; align-items: center; gap: var(--space-xs); color: var(--success); opacity: 0; transition: opacity 0.3s; }
.header-meta .save-indicator.visible { opacity: 1; }

/* ============ Main ============ */
#app-main {
  max-width: 1100px; margin: 0 auto;
  padding: var(--space-xl); position: relative; z-index: 1;
}

/* ============ Step Sections ============ */
.step-section { display: none; animation: fadeSlideIn 0.4s ease-out; }
.step-section.active { display: block; }
@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}
.step-header {
  display: flex; align-items: flex-start; gap: var(--space-md);
  margin-bottom: var(--space-xl); flex-wrap: wrap;
}
.step-number {
  display: flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-hover));
  color: #000; font-weight: 800; font-size: 1.1rem; flex-shrink: 0;
  box-shadow: var(--shadow-glow);
}
.step-header h2 { font-size: 1.5rem; font-weight: 700; margin-bottom: 2px; }
.step-desc { color: var(--text-secondary); font-size: 0.9rem; }

/* ============ PDF Drop Zone ============ */
.pdf-dropzone {
  border: 2px dashed var(--border-hover);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl) var(--space-xl);
  text-align: center;
  transition: all 0.3s;
  cursor: pointer;
  margin-bottom: var(--space-xl);
  position: relative;
  background: linear-gradient(135deg, rgba(30, 33, 48, 0.5), rgba(24, 27, 36, 0.8));
}
.pdf-dropzone:hover {
  border-color: var(--accent);
  background: linear-gradient(135deg, rgba(243, 156, 18, 0.04), rgba(24, 27, 36, 0.8));
}
.pdf-dropzone.dragover {
  border-color: var(--accent);
  background: linear-gradient(135deg, rgba(243, 156, 18, 0.08), rgba(24, 27, 36, 0.8));
  box-shadow: var(--shadow-glow);
  transform: scale(1.01);
}
.dropzone-icon { font-size: 3rem; margin-bottom: var(--space-md); }
.dropzone-title { font-size: 1.15rem; font-weight: 600; margin-bottom: var(--space-xs); }
.dropzone-hint { font-size: 0.85rem; color: var(--text-muted); }

/* Scanning State */
.dropzone-scanning { padding: var(--space-lg) 0; }
.scanning-spinner {
  width: 48px; height: 48px; margin: 0 auto var(--space-md);
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.scanning-text { font-size: 1.1rem; font-weight: 600; margin-bottom: var(--space-xs); }
.scanning-detail { font-size: 0.85rem; color: var(--text-muted); }

/* Done State */
.dropzone-done { padding: var(--space-md) 0; }
.done-icon { font-size: 2.5rem; margin-bottom: var(--space-sm); }
.done-filename {
  font-size: 0.95rem; font-weight: 600; margin-bottom: var(--space-sm);
  color: var(--success);
}

/* ============ Extracted Info ============ */
.extracted-info {
  margin-bottom: var(--space-xl);
  animation: fadeSlideIn 0.5s ease-out;
}
.extracted-title {
  font-size: 1.1rem; font-weight: 700;
  margin-bottom: var(--space-md);
  color: var(--accent-text);
}
.extracted-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  margin-bottom: var(--space-sm);
}
.extracted-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
}
.extracted-label {
  font-size: 0.75rem; font-weight: 600; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 0.05em;
  margin-bottom: 4px;
}
.extracted-value {
  font-size: 0.95rem; font-weight: 500; color: var(--text-primary);
  word-break: break-all;
}

/* Detected Work Type Chips */
.detected-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  margin-top: var(--space-sm);
}
.detected-chips {
  display: flex; gap: var(--space-sm); flex-wrap: wrap; margin-top: var(--space-sm);
}
.work-chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 14px;
  border-radius: 99px;
  font-size: 0.82rem; font-weight: 600;
  animation: chipIn 0.3s ease-out both;
}
.work-chip.detected {
  background: var(--success-bg);
  border: 1px solid rgba(34, 197, 94, 0.3);
  color: var(--success);
}
.work-chip.not-detected {
  background: rgba(107, 114, 128, 0.08);
  border: 1px solid rgba(107, 114, 128, 0.2);
  color: var(--text-muted);
  opacity: 0.6;
}
@keyframes chipIn {
  from { opacity: 0; transform: scale(0.8); }
  to { opacity: 1; transform: scale(1); }
}

/* Detected Summary in Checklist */
.detected-summary {
  display: flex; gap: var(--space-sm); flex-wrap: wrap;
  margin-bottom: var(--space-lg);
}
.detected-summary .work-chip { font-size: 0.78rem; padding: 4px 12px; }

/* ============ Manual Fallback ============ */
.manual-fallback {
  margin-bottom: var(--space-xl);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.manual-fallback summary {
  padding: var(--space-md) var(--space-lg);
  cursor: pointer; color: var(--text-muted); font-size: 0.9rem;
  transition: color 0.2s;
}
.manual-fallback summary:hover { color: var(--text-primary); }
.manual-fallback .form-grid {
  padding: 0 var(--space-lg) var(--space-lg);
}

/* ============ Form ============ */
.form-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: var(--space-lg); margin-bottom: var(--space-xl);
}
.form-group { display: flex; flex-direction: column; gap: var(--space-sm); }
.form-group label {
  font-size: 0.85rem; font-weight: 600; color: var(--text-secondary);
  text-transform: uppercase; letter-spacing: 0.05em;
}
.form-group input, .form-group select {
  background: var(--bg-input); border: 1px solid var(--border);
  border-radius: var(--radius-md); padding: 12px 16px;
  color: var(--text-primary); font-family: var(--font-family); font-size: 0.95rem;
  transition: all 0.2s; outline: none;
}
.form-group input:focus, .form-group select:focus {
  border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow);
}
.form-group input::placeholder { color: var(--text-muted); }
.form-group select option { background: var(--bg-secondary); color: var(--text-primary); }
.form-group select option:disabled { color: var(--text-muted); }

/* ============ Buttons ============ */
.btn-primary {
  display: inline-flex; align-items: center; gap: var(--space-sm);
  padding: 14px 32px;
  background: linear-gradient(135deg, var(--accent), var(--accent-hover));
  color: #000; font-family: var(--font-family); font-size: 1rem; font-weight: 700;
  border: none; border-radius: var(--radius-md); cursor: pointer;
  transition: all 0.25s; box-shadow: var(--shadow-glow);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 0 30px var(--accent-glow), var(--shadow-md); }
.btn-primary:active { transform: translateY(0); }
.btn-primary:disabled { opacity: 0.5; pointer-events: none; }

.btn-secondary {
  display: inline-flex; align-items: center; gap: var(--space-sm);
  padding: 14px 28px; background: var(--bg-card); border: 1px solid var(--border);
  color: var(--text-primary); font-family: var(--font-family); font-size: 0.95rem; font-weight: 600;
  border-radius: var(--radius-md); cursor: pointer; transition: all 0.25s;
}
.btn-secondary:hover { border-color: var(--accent); background: var(--bg-card-hover); box-shadow: var(--shadow-glow); }

.btn-ghost {
  background: none; border: none; color: var(--text-secondary);
  font-family: var(--font-family); font-size: 0.85rem; cursor: pointer;
  padding: var(--space-sm) var(--space-md); border-radius: var(--radius-sm);
  transition: all 0.2s; margin-left: auto;
}
.btn-ghost:hover { color: var(--accent-text); background: var(--accent-glow); }

.btn-adopt {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 18px; background: transparent; border: 1px solid var(--success);
  color: var(--success); font-family: var(--font-family); font-size: 0.85rem; font-weight: 600;
  border-radius: var(--radius-sm); cursor: pointer; transition: all 0.25s;
}
.btn-adopt:hover { background: var(--success-bg); box-shadow: 0 0 12px rgba(34, 197, 94, 0.15); }
.btn-adopt.adopted { background: var(--success); color: #000; border-color: var(--success); pointer-events: none; }

/* ============ Progress Bar ============ */
.progress-container {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: var(--space-lg); margin-bottom: var(--space-lg);
}
.progress-stats { display: flex; justify-content: space-between; align-items: center; margin-bottom: var(--space-sm); }
#progress-text { font-size: 0.9rem; color: var(--text-secondary); }
#progress-percent { font-size: 1.5rem; font-weight: 800; color: var(--accent-text); }
.progress-bar { height: 10px; background: var(--bg-primary); border-radius: 99px; overflow: hidden; }
.progress-fill {
  height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--success));
  border-radius: 99px; transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============ Filter Tabs ============ */
.filter-tabs { display: flex; gap: var(--space-sm); margin-bottom: var(--space-lg); flex-wrap: wrap; }
.filter-tab {
  padding: 8px 18px; border: 1px solid var(--border); border-radius: 99px;
  background: transparent; color: var(--text-secondary);
  font-family: var(--font-family); font-size: 0.85rem; font-weight: 500;
  cursor: pointer; transition: all 0.2s;
}
.filter-tab:hover { border-color: var(--border-hover); color: var(--text-primary); }
.filter-tab.active { background: var(--accent); border-color: var(--accent); color: #000; font-weight: 600; }

/* ============ Checklist ============ */
.checklist-category {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); margin-bottom: var(--space-md);
  overflow: hidden; transition: border-color 0.2s;
}
.checklist-category:hover { border-color: var(--border-hover); }
.checklist-category.has-inactive { opacity: 0.7; }
.category-header {
  display: flex; align-items: center; gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  cursor: pointer; user-select: none; transition: background 0.15s;
}
.category-header:hover { background: var(--bg-card-hover); }
.category-icon { font-size: 1.3rem; width: 36px; text-align: center; flex-shrink: 0; }
.category-title { flex: 1; font-weight: 600; font-size: 0.95rem; }
.category-count {
  font-size: 0.8rem; color: var(--text-muted);
  padding: 3px 10px; background: var(--bg-primary); border-radius: 99px;
}
.category-count.all-done { background: var(--success-bg); color: var(--success); }
.category-chevron { color: var(--text-muted); transition: transform 0.3s; font-size: 0.8rem; }
.checklist-category.open .category-chevron { transform: rotate(180deg); }
.category-items { max-height: 0; overflow: hidden; transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1); }
.checklist-category.open .category-items { max-height: 4000px; }

/* ============ Checklist Items ============ */
.checklist-item {
  display: flex; align-items: center; gap: var(--space-md);
  padding: 12px var(--space-lg) 12px calc(var(--space-lg) + 36px + var(--space-md));
  border-top: 1px solid rgba(42, 45, 58, 0.5);
  transition: background 0.15s; cursor: pointer;
}
.checklist-item:hover { background: rgba(255, 255, 255, 0.02); }
.checklist-item.checked { opacity: 0.55; }
.checklist-item.checked .item-name { text-decoration: line-through; text-decoration-color: var(--text-muted); }
.checklist-item.inactive { opacity: 0.3; display: none; }
.checklist-item.inactive.show-inactive { display: flex; }

.item-checkbox {
  width: 22px; height: 22px; border: 2px solid var(--border-hover);
  border-radius: var(--radius-sm); flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.2s; cursor: pointer;
}
.checklist-item.checked .item-checkbox { background: var(--success); border-color: var(--success); }
.item-checkbox .checkmark { display: none; color: #000; font-size: 0.75rem; font-weight: 800; }
.checklist-item.checked .item-checkbox .checkmark { display: block; }
.item-info { flex: 1; }
.item-name { font-size: 0.9rem; font-weight: 500; margin-bottom: 2px; }
.item-hint { font-size: 0.78rem; color: var(--text-muted); }
.item-badges { display: flex; gap: var(--space-xs); flex-shrink: 0; flex-wrap: wrap; }
.badge {
  padding: 2px 8px; border-radius: 99px;
  font-size: 0.7rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em;
  white-space: nowrap;
}
.badge-required { background: rgba(239, 68, 68, 0.12); color: #f87171; }
.badge-conditional { background: rgba(245, 158, 11, 0.12); color: #fbbf24; }
.badge-important { background: var(--important-bg); color: var(--important); animation: pulseGlow 2s ease-in-out infinite; }
@keyframes pulseGlow { 0%, 100% { opacity: 1; } 50% { opacity: 0.7; } }
.badge-auto { background: var(--info-bg); color: #818cf8; }
.badge-photo { background: rgba(99, 102, 241, 0.12); color: #818cf8; }

/* ============ Contribution ============ */
.contribution-cta { margin-top: var(--space-xl); text-align: center; }
.contribution-cta .btn-secondary { font-size: 1rem; padding: 18px 36px; border-style: dashed; border-width: 2px; }
.contribution-cta .btn-secondary span:first-child { font-size: 1.3rem; }
.contribution-filters { display: flex; gap: var(--space-sm); margin-bottom: var(--space-lg); }
.contrib-filter {
  padding: 8px 18px; border: 1px solid var(--border); border-radius: 99px;
  background: transparent; color: var(--text-secondary);
  font-family: var(--font-family); font-size: 0.85rem; font-weight: 500;
  cursor: pointer; transition: all 0.2s;
}
.contrib-filter:hover { border-color: var(--border-hover); color: var(--text-primary); }
.contrib-filter.active { background: var(--accent); border-color: var(--accent); color: #000; font-weight: 600; }

#contribution-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: var(--space-lg); }
.contribution-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: var(--space-lg);
  transition: all 0.3s; position: relative; overflow: hidden;
}
.contribution-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--success));
  opacity: 0; transition: opacity 0.3s;
}
.contribution-card:hover { border-color: var(--border-hover); transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.contribution-card:hover::before { opacity: 1; }
.card-emoji { font-size: 2rem; margin-bottom: var(--space-md); }
.card-title { font-size: 1.05rem; font-weight: 700; margin-bottom: var(--space-sm); }
.card-description { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.5; margin-bottom: var(--space-md); }
.card-meta { display: flex; gap: var(--space-md); margin-bottom: var(--space-md); flex-wrap: wrap; }
.card-meta-item { font-size: 0.78rem; color: var(--text-muted); display: flex; align-items: center; gap: 4px; }
.card-meta-item .meta-label { color: var(--text-secondary); font-weight: 500; }
.card-stars { color: var(--accent-text); letter-spacing: 2px; }
.card-evaluation {
  display: inline-block; padding: 4px 10px;
  background: var(--success-bg); color: var(--success);
  border-radius: 99px; font-size: 0.75rem; font-weight: 600; margin-bottom: var(--space-md);
}
.card-actions { display: flex; justify-content: flex-end; }

/* ============ Toast ============ */
.toast {
  position: fixed; bottom: 30px; left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--bg-card); border: 1px solid var(--success);
  color: var(--text-primary); padding: 12px 24px;
  border-radius: var(--radius-md); font-size: 0.9rem; font-weight: 500;
  box-shadow: var(--shadow-lg); z-index: 1000; opacity: 0;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1); pointer-events: none;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ============ Footer ============ */
#app-footer {
  text-align: center; padding: var(--space-2xl) var(--space-xl) var(--space-xl);
  color: var(--text-muted); font-size: 0.8rem; position: relative; z-index: 1;
}

/* ============ Scrollbar ============ */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-hover); }

.hidden { display: none !important; }