/* Schema Analysis Tool v2.0 */
:root {
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #818cf8;
  --secondary: #8b5cf6;
  --success: #10b981;
  --success-bg: #ecfdf5;
  --warning: #f59e0b;
  --warning-bg: #fffbeb;
  --error: #ef4444;
  --error-bg: #fef2f2;
  --bg-0: #0f172a;
  --bg-1: #1e293b;
  --bg-2: #334155;
  --bg-3: #475569;
  --text-0: #f1f5f9;
  --text-1: #cbd5e1;
  --text-2: #94a3b8;
  --border: #334155;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 1px 3px rgba(0,0,0,.3);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-0);
  color: var(--text-0);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.app { min-height: 100vh; display: flex; flex-direction: column; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ===== HEADER ===== */
.header { background: var(--bg-1); border-bottom: 1px solid var(--border); padding: 16px 0; }
.header-content { display: flex; justify-content: space-between; align-items: center; }
.logo { display: flex; align-items: center; gap: 12px; }
.logo-title { font-size: 20px; font-weight: 700; }
.logo-version { font-size: 11px; font-weight: 600; color: var(--primary-light); background: rgba(99,102,241,.15); padding: 2px 7px; border-radius: 4px; margin-left: 4px; }
.tagline { font-size: 13px; color: var(--text-2); }

/* ===== MAIN ===== */
.main { flex: 1; padding: 32px 0; }

/* ===== MODE SECTION ===== */
.mode-section { background: var(--bg-1); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }

.mode-tabs { display: flex; border-bottom: 1px solid var(--border); background: var(--bg-2); overflow-x: auto; }
.mode-tab {
  flex: 1; padding: 14px 20px; border: none; background: none; color: var(--text-2);
  font-size: 14px; font-weight: 600; cursor: pointer; display: flex; align-items: center;
  justify-content: center; gap: 8px; transition: all .2s; white-space: nowrap; min-width: 0;
}
.mode-tab:hover { color: var(--text-0); background: rgba(255,255,255,.05); }
.mode-tab.active { color: var(--primary-light); background: var(--bg-1); border-bottom: 2px solid var(--primary); }
.mode-tab svg { flex-shrink: 0; }

.mode-content { display: none; padding: 24px; }
.mode-content.active { display: block; }

/* Inputs */
.input-row { display: flex; gap: 12px; }
.url-input {
  flex: 1; padding: 12px 16px; background: var(--bg-0); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text-0); font-size: 15px; font-family: 'JetBrains Mono', monospace;
  outline: none; transition: border-color .2s;
}
.url-input:focus { border-color: var(--primary); }
.urls-textarea {
  width: 100%; padding: 12px 16px; background: var(--bg-0); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text-0); font-size: 14px; font-family: 'JetBrains Mono', monospace;
  outline: none; resize: vertical; transition: border-color .2s; margin-bottom: 12px;
}
.urls-textarea:focus { border-color: var(--primary); }
.input-small { width: 80px; padding: 8px 10px; background: var(--bg-0); border: 1px solid var(--border); border-radius: var(--radius-sm); color: var(--text-0); font-size: 14px; text-align: center; }

/* Options */
.options-row { margin-top: 12px; display: flex; gap: 20px; }
.crawl-options { display: flex; gap: 20px; margin-top: 16px; }
.option-group { display: flex; align-items: center; gap: 8px; }
.option-group label { font-size: 13px; color: var(--text-2); }
.csv-options { margin: 12px 0; }

.checkbox { display: flex; align-items: center; gap: 8px; cursor: pointer; font-size: 13px; color: var(--text-1); }
.checkbox input { accent-color: var(--primary); width: 16px; height: 16px; }

/* Buttons */
.btn-primary {
  padding: 12px 24px; background: var(--primary); color: white; border: none;
  border-radius: var(--radius-sm); font-size: 15px; font-weight: 600; cursor: pointer;
  transition: background .2s; display: inline-flex; align-items: center; gap: 8px; white-space: nowrap;
}
.btn-primary:hover { background: var(--primary-dark); }
.btn-primary:disabled { opacity: .5; cursor: not-allowed; }

.btn-secondary {
  padding: 10px 18px; background: var(--bg-2); color: var(--text-0); border: 1px solid var(--border);
  border-radius: var(--radius-sm); font-size: 14px; font-weight: 500; cursor: pointer; transition: all .2s;
}
.btn-secondary:hover { background: var(--bg-3); }

.btn-text { background: none; border: none; color: var(--error); cursor: pointer; font-size: 13px; font-weight: 500; }
.btn-text:hover { text-decoration: underline; }

.btn-sm { padding: 6px 14px; font-size: 13px; }

/* Upload area */
.upload-area {
  border: 2px dashed var(--border); border-radius: var(--radius); padding: 40px 20px;
  text-align: center; cursor: pointer; transition: all .2s;
}
.upload-area:hover, .upload-area.dragover { border-color: var(--primary); background: rgba(99,102,241,.05); }
.upload-text { margin-top: 12px; font-size: 15px; color: var(--text-1); }
.upload-link { color: var(--primary-light); cursor: pointer; }
.upload-hint { margin-top: 6px; font-size: 13px; color: var(--text-2); }

.csv-info { display: flex; align-items: center; gap: 12px; padding: 12px 16px; background: var(--bg-2); border-radius: var(--radius-sm); margin-bottom: 12px; }
.csv-filename { font-family: 'JetBrains Mono', monospace; font-size: 14px; color: var(--primary-light); }

/* ===== LOADING ===== */
.loading { text-align: center; padding: 60px 20px; }
.spinner { width: 48px; height: 48px; border: 4px solid var(--border); border-top-color: var(--primary); border-radius: 50%; animation: spin .8s linear infinite; margin: 0 auto 16px; }
@keyframes spin { to { transform: rotate(360deg); } }
.loading-text { font-size: 15px; color: var(--text-2); }
.progress-bar { width: 300px; height: 6px; background: var(--bg-2); border-radius: 3px; margin: 16px auto 0; overflow: hidden; }
.progress-fill { height: 100%; background: var(--primary); border-radius: 3px; transition: width .3s; width: 0%; }

/* ===== RESULTS ===== */

/* Dashboard header */
.result-header {
  background: linear-gradient(135deg, var(--primary-dark), var(--secondary));
  border-radius: var(--radius); padding: 28px; margin-bottom: 24px; color: white;
}
.result-headline { font-size: 22px; font-weight: 700; margin-bottom: 4px; }
.result-meta { font-size: 13px; opacity: .8; }

/* Score circle */
.score-circle {
  width: 80px; height: 80px; border-radius: 50%; display: flex; flex-direction: column;
  align-items: center; justify-content: center; font-weight: 800; font-size: 28px; color: white;
  border: 4px solid rgba(255,255,255,.3);
}
.score-circle .grade { font-size: 13px; font-weight: 600; opacity: .8; }

/* Stats grid */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; margin-bottom: 24px; }
.stat-card {
  background: var(--bg-1); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 16px; text-align: center;
}
.stat-value { font-size: 28px; font-weight: 800; color: var(--primary-light); }
.stat-label { font-size: 12px; color: var(--text-2); margin-top: 2px; text-transform: uppercase; letter-spacing: .5px; }

/* Section headers */
.section-title {
  font-size: 18px; font-weight: 700; margin: 32px 0 16px; padding-bottom: 8px;
  border-bottom: 2px solid var(--border); display: flex; align-items: center; gap: 8px;
}

/* Priorities table */
.priorities-table { width: 100%; border-collapse: collapse; margin-bottom: 24px; }
.priorities-table th, .priorities-table td { padding: 10px 14px; text-align: left; border-bottom: 1px solid var(--border); font-size: 14px; }
.priorities-table th { background: var(--bg-2); font-weight: 600; color: var(--text-2); font-size: 12px; text-transform: uppercase; letter-spacing: .5px; }
.priorities-table tr:hover { background: rgba(255,255,255,.02); }

/* Groups */
.group-card {
  background: var(--bg-1); border: 1px solid var(--border); border-radius: var(--radius);
  margin-bottom: 16px; overflow: hidden;
}
.group-header {
  padding: 16px 20px; display: flex; justify-content: space-between; align-items: center;
  cursor: pointer; transition: background .2s;
}
.group-header:hover { background: rgba(255,255,255,.02); }
.group-name { font-size: 16px; font-weight: 700; }
.group-meta { font-size: 13px; color: var(--text-2); }
.group-body { padding: 0 20px 20px; display: none; }
.group-card.open .group-body { display: block; }
.group-arrow { transition: transform .2s; color: var(--text-2); }
.group-card.open .group-arrow { transform: rotate(90deg); }

/* Page cards */
.page-card {
  background: var(--bg-2); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 16px; margin-bottom: 10px;
}
.page-url { font-family: 'JetBrains Mono', monospace; font-size: 13px; color: var(--primary-light); word-break: break-all; }
.page-score-bar { height: 6px; background: var(--bg-0); border-radius: 3px; margin: 8px 0; overflow: hidden; }
.page-score-fill { height: 100%; border-radius: 3px; }

.page-schemas { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }

/* Badges */
.badge {
  display: inline-block; padding: 2px 10px; border-radius: 12px; font-size: 11px;
  font-weight: 600; letter-spacing: .3px;
}
.badge-critical { background: var(--error); color: white; }
.badge-high { background: #f97316; color: white; }
.badge-medium { background: var(--warning); color: #1e293b; }
.badge-low { background: var(--bg-3); color: var(--text-1); }
.badge-success { background: var(--success); color: white; }
.badge-info { background: var(--primary); color: white; }
.badge-missing { background: rgba(239,68,68,.15); color: #fca5a5; border: 1px solid rgba(239,68,68,.3); }
.badge-present { background: rgba(16,185,129,.15); color: #6ee7b7; border: 1px solid rgba(16,185,129,.3); }

/* Schema detail card */
.schema-detail {
  background: var(--bg-1); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 16px; margin-bottom: 10px;
}
.schema-detail-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.schema-type { font-weight: 700; font-size: 15px; }
.schema-props { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 6px; }
.prop-tag { font-size: 11px; padding: 2px 8px; background: var(--bg-2); border-radius: 4px; color: var(--text-2); }

/* Code block */
.code-block {
  background: var(--bg-0); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 16px; margin: 10px 0; position: relative; overflow-x: auto;
}
.code-block pre {
  font-family: 'JetBrains Mono', monospace; font-size: 13px; color: var(--text-1);
  white-space: pre; line-height: 1.5; margin: 0;
}
.code-block .copy-btn {
  position: absolute; top: 8px; right: 8px; padding: 4px 12px; background: var(--bg-2);
  border: 1px solid var(--border); border-radius: 4px; color: var(--text-2); font-size: 12px;
  cursor: pointer; transition: all .2s;
}
.code-block .copy-btn:hover { background: var(--bg-3); color: var(--text-0); }

/* Placeholders warning */
.placeholder-list { margin: 8px 0; padding-left: 20px; }
.placeholder-list li { font-size: 13px; color: var(--warning); margin: 4px 0; }

/* Implementation notes */
.impl-notes { font-size: 13px; color: var(--text-2); margin-top: 8px; padding-left: 16px; }
.impl-notes li { margin: 4px 0; }

/* Insights */
.insight-positive { color: var(--success); }
.insight-negative { color: var(--error); }
.insight-opportunity { color: var(--secondary); }

/* Export bar */
.export-bar {
  display: flex; gap: 10px; margin: 24px 0; padding: 16px; background: var(--bg-1);
  border: 1px solid var(--border); border-radius: var(--radius-sm); align-items: center;
}
.export-bar span { font-size: 14px; font-weight: 600; color: var(--text-2); margin-right: auto; }

/* Score colors */
.score-a { color: var(--success); }
.score-b { color: #3b82f6; }
.score-c { color: var(--warning); }
.score-d { color: #f97316; }
.score-f { color: var(--error); }

.bg-score-a { background: var(--success); }
.bg-score-b { background: #3b82f6; }
.bg-score-c { background: var(--warning); }
.bg-score-d { background: #f97316; }
.bg-score-f { background: var(--error); }

/* ===== MODAL ===== */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,.7); z-index: 1000;
  display: flex; align-items: center; justify-content: center; padding: 20px;
}
.modal {
  background: var(--bg-1); border: 1px solid var(--border); border-radius: var(--radius);
  width: 100%; max-width: 800px; max-height: 85vh; display: flex; flex-direction: column;
}
.modal-header {
  display: flex; justify-content: space-between; align-items: center; padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}
.modal-header h3 { font-size: 18px; font-weight: 700; }
.modal-close { background: none; border: none; color: var(--text-2); font-size: 24px; cursor: pointer; padding: 4px 8px; }
.modal-close:hover { color: var(--text-0); }
.modal-body { padding: 20px; overflow-y: auto; flex: 1; }

/* ===== FOOTER ===== */
.footer { padding: 16px 0; border-top: 1px solid var(--border); margin-top: auto; text-align: center; }
.footer p { font-size: 13px; color: var(--text-2); }
.footer-links { margin-top: 4px; }
.footer-links a { color: var(--primary-light); text-decoration: none; margin: 0 10px; }
.footer-links a:hover { text-decoration: underline; }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .header-content { flex-direction: column; gap: 8px; text-align: center; }
  .mode-tabs { flex-wrap: nowrap; overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .mode-tab { padding: 12px 14px; font-size: 13px; }
  .input-row { flex-direction: column; }
  .crawl-options { flex-direction: column; gap: 12px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .export-bar { flex-wrap: wrap; }
  .modal { max-width: 100%; margin: 10px; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .mode-tab span { display: none; }
}

/* ===== ANIMATIONS ===== */
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
.fade-in { animation: fadeIn .3s ease; }