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

:root {
  --bg: #0f1117;
  --bg-card: #1a1d27;
  --bg-card-hover: #222632;
  --bg-input: #1e2130;
  --border: #2a2e3d;
  --text: #e4e6ed;
  --text-dim: #8b8fa3;
  --text-muted: #5c6072;
  --accent: #6c5ce7;
  --accent-hover: #7c6ff7;
  --green: #00d68f;
  --red: #ff6b6b;
  --yellow: #ffd93d;
  --orange: #ff9f43;
  --blue: #339af0;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(0,0,0,0.3);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* === Header === */
header {
  padding: 40px 0 20px;
  text-align: center;
  border-bottom: 1px solid var(--border);
}
header h1 {
  font-size: 2rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent), #a29bfe);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.subtitle { color: var(--text-dim); margin-top: 8px; font-size: 1.05rem; }

/* === Input Section === */
.input-section { padding: 32px 0; }
.input-group {
  display: flex;
  gap: 12px;
  max-width: 700px;
  margin: 0 auto;
}
.input-group input {
  flex: 1;
  padding: 14px 18px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 1rem;
  outline: none;
  transition: border-color 0.2s;
}
.input-group input:focus { border-color: var(--accent); }
.input-group input::placeholder { color: var(--text-muted); }

.input-group button {
  padding: 14px 28px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
  white-space: nowrap;
}
.input-group button:hover { background: var(--accent-hover); }
.input-group button:disabled { opacity: 0.6; cursor: not-allowed; }

.spinner {
  display: inline-block;
  width: 16px; height: 16px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  vertical-align: middle;
}
@keyframes spin { to { transform: rotate(360deg); } }

.error-msg {
  max-width: 700px;
  margin: 12px auto 0;
  padding: 12px 16px;
  background: rgba(255,107,107,0.1);
  border: 1px solid rgba(255,107,107,0.3);
  border-radius: var(--radius-sm);
  color: var(--red);
  font-size: 0.9rem;
}

/* === Results Header === */
.results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding: 20px 0 16px;
}
.results-header h2 { font-size: 1.3rem; font-weight: 600; }
.results-header h2 span { color: var(--accent); word-break: break-all; }
.timestamp { color: var(--text-muted); font-size: 0.85rem; }

/* === Source Switcher === */
.source-switcher {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.source-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-dim);
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s;
}
.source-btn:hover:not(:disabled) { border-color: var(--accent); color: var(--text); }
.source-btn.active { border-color: var(--accent); color: var(--text); background: rgba(108, 92, 231, 0.1); }
.source-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.source-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--red);
}
.source-btn.ok .source-dot { background: var(--green); }
.source-btn.err .source-dot { background: var(--red); }

/* === Overview Grid === */
.overview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 12px;
  margin-bottom: 24px;
}

.overview-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  transition: background 0.2s;
  cursor: default;
}
.overview-card:hover { background: var(--bg-card-hover); }

.overview-card .card-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.overview-card .provider-badge {
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: 99px;
  font-weight: 600;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.overview-card .bot-name { font-weight: 600; font-size: 0.95rem; }

.overview-card .card-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.metric {
  display: flex;
  flex-direction: column;
}
.metric-label { font-size: 0.7rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; }
.metric-value { font-size: 1.05rem; font-weight: 600; }
.metric-value.status-ok { color: var(--green); }
.metric-value.status-redirect { color: var(--yellow); }
.metric-value.status-blocked { color: var(--red); }
.metric-value.status-error { color: var(--orange); }

.card-robots {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--border);
  font-size: 0.8rem;
}
.robots-allowed { color: var(--green); }
.robots-blocked { color: var(--red); }
.robots-unknown { color: var(--text-muted); }

/* === Tabs === */
.tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
  overflow-x: auto;
}
.tab {
  padding: 12px 20px;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-dim);
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}
.tab:hover { color: var(--text); }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); font-weight: 600; }

.tab-content { display: none; padding-bottom: 32px; }
.tab-content.active { display: block; }

/* === Style Toggle Button === */
.style-toggle-btn {
  padding: 6px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-dim);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s;
  margin-left: auto;
}
.style-toggle-btn:hover { border-color: var(--accent); color: var(--text); }

/* === Bot Selector === */
.bot-selector {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}
.bot-selector label { color: var(--text-dim); font-size: 0.9rem; }
.bot-selector select {
  padding: 8px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.9rem;
  outline: none;
}
.bot-selector select:focus { border-color: var(--accent); }

/* === Snapshot === */
.snapshot-container { }
.snapshot-info {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius) var(--radius) 0 0;
  padding: 16px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}
.snapshot-frame-wrapper {
  border: 1px solid var(--border);
  border-top: none;
  border-radius: 0 0 var(--radius) var(--radius);
  overflow: hidden;
  background: #fff;
}
.snapshot-frame {
  width: 100%;
  height: 600px;
  border: none;
}

.raw-html {
  margin-top: 16px;
}
.raw-html summary {
  cursor: pointer;
  color: var(--text-dim);
  font-size: 0.9rem;
  padding: 8px 0;
}
.code-block {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px;
  overflow-x: auto;
  font-size: 0.8rem;
  line-height: 1.5;
  color: var(--text-dim);
  max-height: 500px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-all;
}

/* === Robots === */
.robots-section { margin-bottom: 24px; }
.robots-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
}
.robots-table th, .robots-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}
.robots-table th {
  background: rgba(108, 92, 231, 0.1);
  color: var(--text-dim);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.robots-raw {
  margin-top: 20px;
}

/* === Headers === */
.headers-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
}
.headers-table th, .headers-table td {
  padding: 10px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 0.85rem;
}
.headers-table th {
  background: rgba(108, 92, 231, 0.1);
  color: var(--text-dim);
  font-weight: 600;
  width: 30%;
}
.headers-table td { color: var(--text); word-break: break-all; }

/* === Diff === */
.diff-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.diff-controls label { color: var(--text-dim); }
.diff-controls select {
  padding: 8px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.9rem;
}
.diff-controls span { color: var(--text-muted); font-size: 0.9rem; }

.diff-container {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.diff-stats {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  gap: 20px;
  font-size: 0.85rem;
}
.diff-stats .added { color: var(--green); }
.diff-stats .removed { color: var(--red); }
.diff-stats .same { color: var(--text-muted); }

.diff-body {
  padding: 16px;
  font-family: 'SF Mono', 'Consolas', 'Monaco', monospace;
  font-size: 0.8rem;
  line-height: 1.6;
  max-height: 600px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-all;
}
.diff-line-added { background: rgba(0, 214, 143, 0.1); color: var(--green); }
.diff-line-removed { background: rgba(255, 107, 107, 0.1); color: var(--red); }
.diff-line-same { color: var(--text-muted); }
.diff-identical {
  padding: 40px;
  text-align: center;
  color: var(--green);
  font-size: 1rem;
}

/* === Meta === */
.meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 16px;
}
.meta-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}
.meta-card h4 {
  font-size: 0.85rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 10px;
}
.meta-card .meta-value {
  font-size: 0.95rem;
  color: var(--text);
  word-break: break-word;
}
.meta-card .meta-value.empty { color: var(--text-muted); font-style: italic; }

.warnings-list {
  list-style: none;
  margin-top: 16px;
}
.warnings-list li {
  padding: 10px 14px;
  margin-bottom: 8px;
  background: rgba(255, 159, 67, 0.08);
  border: 1px solid rgba(255, 159, 67, 0.2);
  border-radius: var(--radius-sm);
  color: var(--orange);
  font-size: 0.85rem;
}

/* === Footer === */
footer {
  margin-top: 40px;
  padding: 24px 0;
  border-top: 1px solid var(--border);
  text-align: center;
}
footer p { color: var(--text-muted); font-size: 0.85rem; }

/* === Responsive === */
@media (max-width: 640px) {
  header h1 { font-size: 1.5rem; }
  .input-group { flex-direction: column; }
  .input-group button { width: 100%; }
  .overview-grid { grid-template-columns: 1fr; }
  .tabs { gap: 0; }
  .tab { padding: 10px 14px; font-size: 0.85rem; }
}

/* === Redirect chain === */
.redirect-chain {
  margin-top: 12px;
  padding: 12px;
  background: rgba(255, 217, 61, 0.05);
  border: 1px solid rgba(255, 217, 61, 0.2);
  border-radius: var(--radius-sm);
}
.redirect-step {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  padding: 4px 0;
  color: var(--text-dim);
}
.redirect-step .status-badge {
  font-weight: 600;
  color: var(--yellow);
}
.redirect-arrow {
  color: var(--text-muted);
  margin: 0 4px;
}