/* QR Manager — Mobile-first CSS */

:root {
  --blue: #3498db;
  --blue-dark: #2980b9;
  --bg: #f5f5f5;
  --card: #ffffff;
  --text: #2c3e50;
  --text-light: #7f8c8d;
  --border: #ecf0f1;
  --green: #27ae60;
  --red: #e74c3c;
  --orange: #e67e22;
  --purple: #9b59b6;
  --shadow: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-lg: 0 4px 16px rgba(0,0,0,0.12);
  --radius: 12px;
  --tab-height: 64px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  padding-bottom: calc(var(--tab-height) + 16px);
  min-height: 100vh;
}

/* === Tab Bar === */
#tab-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--tab-height);
  background: var(--card);
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-around;
  align-items: center;
  z-index: 100;
  box-shadow: 0 -2px 8px rgba(0,0,0,0.05);
}
.tab {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  text-decoration: none;
  color: var(--text-light);
  font-size: 10px;
  font-weight: 500;
  padding: 6px 12px;
  transition: color 0.2s;
}
.tab.active { color: var(--blue); }
.tab svg { width: 22px; height: 22px; }
.tab-plus {
  width: 40px;
  height: 40px;
  background: var(--blue);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 300;
  margin-top: -16px;
  box-shadow: 0 2px 8px rgba(52,152,219,0.4);
}

/* === Header === */
.page-header {
  padding: 16px 16px 0;
}
.page-header h1 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}
.page-header h1 .icon { font-size: 26px; }

/* === Category Pills === */
.category-scroll {
  display: flex;
  gap: 8px;
  padding: 12px 16px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.category-scroll::-webkit-scrollbar { display: none; }
.cat-pill {
  flex-shrink: 0;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  background: var(--card);
  color: var(--text-light);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}
.cat-pill.active {
  background: var(--blue);
  color: white;
  border-color: var(--blue);
}

/* === Card Grid === */
.card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  padding: 0 16px 16px;
}
.qr-card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
}
.qr-card:active {
  transform: scale(0.97);
  box-shadow: var(--shadow-lg);
}
.qr-card .thumb {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  background: #f8f9fa;
  display: block;
}
.qr-card .info {
  padding: 10px;
}
.qr-card .cat-tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 10px;
  font-weight: 600;
  margin-bottom: 4px;
}
.qr-card .label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.3;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.qr-card .url {
  font-size: 11px;
  color: var(--text-light);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-top: 2px;
}
.qr-card .date {
  font-size: 10px;
  color: #bdc3c7;
  margin-top: 4px;
}

/* Category colors */
.cat-restaurant { background: #ffeaa7; color: #d35400; }
.cat-payment { background: #dfe6e9; color: #2d3436; }
.cat-website { background: #74b9ff; color: white; }
.cat-app { background: #a29bfe; color: white; }
.cat-contact { background: #55efc4; color: #00b894; }
.cat-wifi { background: #fd79a8; color: white; }
.cat-other { background: #b2bec3; color: white; }

/* === Upload Page === */
.upload-zone {
  margin: 16px;
  border: 2px dashed #bdc3c7;
  border-radius: var(--radius);
  padding: 40px 20px;
  text-align: center;
  background: var(--card);
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}
.upload-zone.dragover {
  border-color: var(--blue);
  background: #ebf5fb;
}
.upload-zone .icon { font-size: 48px; margin-bottom: 8px; }
.upload-zone .text { font-size: 14px; color: var(--text-light); }
.upload-zone .hint { font-size: 12px; color: #bdc3c7; margin-top: 4px; }

.upload-preview {
  margin: 0 16px 16px;
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.upload-preview .preview-img {
  width: 100%;
  max-height: 300px;
  object-fit: contain;
  background: #f8f9fa;
  display: block;
}
.upload-preview .result-body {
  padding: 16px;
}

/* Result status */
.result-status {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 8px;
  margin-bottom: 12px;
  font-size: 13px;
  font-weight: 600;
}
.result-status.success { background: #d4edda; color: #155724; }
.result-status.error { background: #f8d7da; color: #721c24; }
.result-status.loading { background: #fff3cd; color: #856404; }
.result-status.warn { background: #fff3cd; color: #856404; }

.manual-hint {
  font-size: 13px;
  color: var(--text);
  background: #eef7ff;
  border: 1px solid #cfe8ff;
  border-radius: 8px;
  padding: 10px 12px;
  margin: 8px 0 12px;
  line-height: 1.45;
}
.optional-tag {
  display: inline-block;
  margin-left: 6px;
  font-size: 11px;
  font-weight: 600;
  color: var(--blue-dark);
  background: #e8f4fc;
  padding: 1px 6px;
  border-radius: 999px;
}
.save-hint {
  font-size: 12px;
  color: var(--text-light);
  text-align: center;
  margin-top: 8px;
}

.url-box {
  background: #f8f9fa;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 13px;
  color: var(--blue);
  word-break: break-all;
  margin-bottom: 12px;
}

.vision-box {
  background: #f0f7ff;
  border: 1px solid #d6e9f8;
  border-radius: 8px;
  padding: 12px;
  margin-bottom: 12px;
}
.vision-box .label {
  font-size: 11px;
  font-weight: 600;
  color: var(--blue);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}
.vision-box .text {
  font-size: 13px;
  color: var(--text);
  line-height: 1.5;
}

/* Form fields */
.form-group {
  margin-bottom: 12px;
}
.form-group label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-light);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  color: var(--text);
  background: var(--card);
  transition: border-color 0.2s;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--blue);
}
.form-group textarea {
  resize: vertical;
  min-height: 60px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 12px 20px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
  width: 100%;
}
.btn-primary { background: var(--blue); color: white; }
.btn-primary:active { background: var(--blue-dark); }
.btn-outline { background: transparent; color: var(--blue); border: 1px solid var(--blue); }
.btn-outline:active { background: #ebf5fb; }
.btn-danger { background: transparent; color: var(--red); border: 1px solid var(--red); }
.btn-danger:active { background: #fdf0ef; }
.btn-group {
  display: flex;
  gap: 8px;
  margin-top: 16px;
}
.btn-group .btn { flex: 1; }

/* === Detail Page === */
.detail-img-wrap {
  text-align: center;
  padding: 20px 16px;
}
.detail-img {
  max-width: 280px;
  width: 100%;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
}

.detail-card {
  margin: 0 16px 16px;
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
}
.detail-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}
.detail-row:last-child { border-bottom: none; }
.detail-row .key {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  min-width: 80px;
}
.detail-row .value {
  font-size: 14px;
  color: var(--text);
  text-align: right;
  flex: 1;
  word-break: break-all;
}
.detail-row .value a {
  color: var(--blue);
  text-decoration: none;
}
.detail-row .value .tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  justify-content: flex-end;
}
.detail-row .value .tag {
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 11px;
  background: #ecf0f1;
  color: var(--text-light);
}

.detail-actions {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  padding: 0 16px 16px;
}
.detail-actions .btn {
  padding: 10px 8px;
  font-size: 12px;
}

/* === Search Page === */
.search-box {
  padding: 16px;
}
.search-input {
  width: 100%;
  padding: 12px 16px 12px 40px;
  border: 1px solid var(--border);
  border-radius: 12px;
  font-size: 15px;
  font-family: inherit;
  background: var(--card);
  box-shadow: var(--shadow);
}
.search-input:focus { outline: none; border-color: var(--blue); }
.search-wrap {
  position: relative;
}
.search-wrap svg {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-light);
}

/* === Settings === */
.settings-list {
  margin: 16px;
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.settings-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}
.settings-item:last-child { border-bottom: none; }
.settings-item .label { color: var(--text); }
.settings-item .value { color: var(--text-light); font-size: 13px; }

/* === Empty state === */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-light);
}
.empty-state .icon { font-size: 48px; margin-bottom: 12px; }
.empty-state .title { font-size: 16px; font-weight: 600; margin-bottom: 4px; color: var(--text); }
.empty-state .desc { font-size: 13px; }

/* === Back link === */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 12px 16px 0;
  color: var(--blue);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
}

/* === Loading === */
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--blue);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* === Stat badges === */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  padding: 0 16px 16px;
}
.stat-card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
  text-align: center;
}
.stat-card .num {
  font-size: 28px;
  font-weight: 700;
  color: var(--blue);
}
.stat-card .label {
  font-size: 11px;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Hidden */
.hidden { display: none !important; }