/* === Vercel-style Design System === */
:root {
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', Monaco, monospace;

  --bg: #ffffff;
  --bg-elevated: #fafafa;
  --bg-surface: #f5f5f5;
  --border: #eaeaea;
  --border-strong: #ddd;
  --text: #111111;
  --text-secondary: #666666;
  --text-tertiary: #888888;
  --text-muted: #999999;

  --accent: #000000;
  --accent-hover: #333333;
  --accent-light: #f2f2f2;

  --danger: #dc2626;
  --danger-bg: #fef2f2;
  --warning: #d97706;
  --warning-bg: #fffbeb;
  --success: #16a34a;
  --success-bg: #f0fdf4;
  --info: #2563eb;
  --info-bg: #eff6ff;

  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.08);

  --transition: 0.2s ease;
}

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

html { scroll-behavior: smooth; }

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

a { color: inherit; text-decoration: none; }

.container { max-width: 800px; margin: 0 auto; padding: 0 24px; }

/* === NAVBAR === */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1100px;
  margin: 0 auto;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}

.nav-brand svg { color: var(--text); }

.nav-links { display: flex; gap: 24px; }
.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--text); }

@media (max-width: 600px) {
  .nav-links { display: none; }
}

/* === HERO === */
.hero {
  text-align: center;
  padding: 64px 24px 40px;
  max-width: 640px;
  margin: 0 auto;
}

.hero-badge-top {
  display: inline-block;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-tertiary);
  background: var(--bg-surface);
  border: 1px solid var(--border);
  padding: 5px 14px;
  border-radius: 100px;
  margin-bottom: 20px;
  letter-spacing: 0.2px;
}

.hero h1 {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

.gradient-text {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 520px;
  margin: 0 auto;
}

/* === SCANNER BOX === */
.scanner-box {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 24px;
  box-shadow: var(--shadow-lg);
  margin-bottom: 32px;
}

.input-row {
  display: flex;
  gap: 10px;
  margin-bottom: 14px;
}

.input-wrap {
  flex: 1;
  display: flex;
  align-items: center;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0 14px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.input-wrap:focus-within {
  border-color: var(--text);
  box-shadow: 0 0 0 3px rgba(0,0,0,0.06);
}

.protocol {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  user-select: none;
  font-family: var(--font-mono);
}

.input-wrap input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  padding: 12px 8px;
  font-size: 15px;
  color: var(--text);
  font-family: var(--font-sans);
}

.input-wrap input::placeholder { color: var(--text-muted); }

.btn-scan {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  border: none;
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
  white-space: nowrap;
}

.btn-scan:hover { background: var(--accent-hover); }
.btn-scan:active { transform: scale(0.98); }

.btn-ghost {
  padding: 8px 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
}

.btn-ghost:hover { border-color: var(--text-tertiary); color: var(--text); }

.options-row {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.opt {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
  user-select: none;
}

.opt input { display: none; }

.opt span::before {
  content: '';
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 1.5px solid var(--border-strong);
  border-radius: 4px;
  margin-right: 8px;
  vertical-align: middle;
  transition: all var(--transition);
}

.opt input:checked + span::before {
  background: var(--accent);
  border-color: var(--accent);
  background-image: url("data:image/svg+xml,%3Csvg width='10' height='8' viewBox='0 0 10 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 4l2.5 2.5L9 1' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
}

/* === PROGRESS === */
.progress-track {
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 8px;
}

.progress-bar {
  height: 100%;
  background: var(--accent);
  border-radius: 2px;
  transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.progress-meta {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-tertiary);
  font-family: var(--font-mono);
}

/* === RESULTS === */
.results-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 20px;
}

.results-title {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.results-url {
  font-size: 13px;
  color: var(--text-tertiary);
  font-family: var(--font-mono);
  margin-top: 2px;
}

/* === KPIS === */
.kpis {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: 10px;
  margin-bottom: 24px;
}

.kpi {
  padding: 16px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  text-align: center;
}

.kpi-num {
  font-size: 28px;
  font-weight: 700;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}

.kpi-label {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-tertiary);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.kpi-critical .kpi-num { color: var(--danger); }
.kpi-high .kpi-num { color: var(--warning); }
.kpi-medium .kpi-num { color: #ea580c; }
.kpi-low .kpi-num { color: var(--info); }
.kpi-safe .kpi-num { color: var(--success); }

/* === WP INFO === */
.wp-info {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 20px;
  padding: 12px 16px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 13px;
}

.wp-info-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.wp-info-label { color: var(--text-tertiary); font-weight: 500; }
.wp-info-value { font-family: var(--font-mono); font-weight: 600; color: var(--text); }

/* === TABS === */
.tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
  scrollbar-width: none;
}

.tabs::-webkit-scrollbar { display: none; }

.tab {
  padding: 10px 14px;
  border-radius: 6px 6px 0 0;
  border: none;
  background: transparent;
  color: var(--text-tertiary);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  position: relative;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color var(--transition);
}

.tab:hover { color: var(--text-secondary); }

.tab.active {
  color: var(--text);
  background: var(--bg-elevated);
}

.tab.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 10px;
  right: 10px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px 2px 0 0;
}

.tab-count {
  font-size: 11px;
  font-weight: 600;
  padding: 1px 7px;
  border-radius: 100px;
  background: var(--border);
  color: var(--text-tertiary);
}

/* === PANELS === */
.panel { display: none; }
.panel.active { display: block; }

/* === CARDS === */
.card {
  padding: 18px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--bg);
  margin-bottom: 10px;
  transition: box-shadow var(--transition), border-color var(--transition);
}

.card:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-sm);
}

.card-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
  flex-wrap: wrap;
}

.card-title {
  font-size: 15px;
  font-weight: 600;
  flex: 1;
}

.card-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.card-detail {
  font-size: 12px;
  color: var(--text-tertiary);
  font-family: var(--font-mono);
  background: var(--bg-elevated);
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  margin-top: 8px;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
  border: 1px solid var(--border);
}

.card-endpoint {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  background: var(--bg-elevated);
  padding: 3px 8px;
  border-radius: 4px;
  margin-top: 6px;
  display: inline-block;
  word-break: break-all;
  border: 1px solid var(--border);
}

/* === BADGES === */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
}

.badge-vuln { background: var(--danger-bg); color: var(--danger); }
.badge-safe { background: var(--success-bg); color: var(--success); }
.badge-warn { background: var(--warning-bg); color: var(--warning); }
.badge-info { background: var(--info-bg); color: var(--info); }

.severity {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.severity-critical { background: var(--danger-bg); color: var(--danger); }
.severity-high { background: var(--warning-bg); color: var(--warning); }
.severity-medium { background: #fff7ed; color: #ea580c; }
.severity-low { background: var(--info-bg); color: var(--info); }
.severity-info { background: var(--bg-surface); color: var(--text-tertiary); }

/* === JSON VIEWER === */
.json-viewer {
  background: var(--bg-elevated);
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  overflow-x: auto;
  margin-top: 8px;
  max-height: 280px;
  overflow-y: auto;
  border: 1px solid var(--border);
}

.json-key { color: #2563eb; }
.json-string { color: #16a34a; }
.json-number { color: #dc2626; }
.json-bool { color: #d97706; }
.json-null { color: var(--text-muted); }

/* === SOLUTION BOX === */
.solution-box {
  background: var(--success-bg);
  border: 1px solid #bbf7d0;
  border-radius: var(--radius-md);
  padding: 16px;
  margin-top: 12px;
}

.solution-box.critical {
  background: var(--danger-bg);
  border-color: #fecaca;
}

.solution-title {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--success);
}

.solution-box.critical .solution-title { color: var(--danger); }

.step-list {
  counter-reset: step;
  list-style: none;
  padding: 0;
  margin: 0;
}

.step-list li {
  position: relative;
  padding-left: 30px;
  margin-bottom: 8px;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.step-list li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* === CODE BLOCKS === */
.code-block {
  background: #111111;
  color: #f5f5f5;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  overflow-x: auto;
  white-space: pre;
  margin-top: 8px;
  position: relative;
}

.copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  padding: 5px 12px;
  font-size: 11px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid #333;
  background: #222;
  color: #aaa;
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font-sans);
}

.copy-btn:hover { background: #333; color: #fff; }

.note-box {
  background: var(--warning-bg);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 10px;
  line-height: 1.5;
  border: 1px solid #fde68a;
}

/* === PLUGIN TAGS === */
.plugin-tags { margin-top: 10px; }

.plugin-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 12px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
  background: var(--accent-light);
  color: var(--text);
  margin: 3px 4px 3px 0;
  cursor: pointer;
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.plugin-tag:hover {
  background: var(--border);
  transform: translateY(-1px);
}

/* === TOGGLE FIX === */
.toggle-fix {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  padding: 6px 0;
  margin-top: 6px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.toggle-fix:hover { color: var(--text); }

.fix-details { display: none; margin-top: 8px; }
.fix-details.open { display: block; }

/* === ACTION PLAN CARD === */
.action-card {
  padding: 18px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--bg);
  margin-bottom: 10px;
  border-left: 3px solid var(--danger);
}

.action-card.medium { border-left-color: var(--warning); }
.action-card.low { border-left-color: var(--info); }
.action-card.info { border-left-color: var(--border-strong); }

/* === VULN DB === */
.vuln-card {
  padding: 16px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  margin-bottom: 10px;
  border-left: 3px solid var(--danger);
}

.vuln-card.high { border-left-color: var(--warning); }
.vuln-card.medium { border-left-color: #ea580c; }
.vuln-card.low { border-left-color: var(--info); }

.vuln-cve {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-tertiary);
  background: var(--bg-elevated);
  padding: 2px 8px;
  border-radius: 4px;
  border: 1px solid var(--border);
}

.vuln-cvss {
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
}

.vuln-cvss-critical { background: var(--danger-bg); color: var(--danger); }
.vuln-cvss-high { background: var(--warning-bg); color: var(--warning); }

/* === CATEGORY TITLE === */
.category-title {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin: 28px 0 10px 0;
}

/* === EMPTY STATE === */
.empty-state {
  text-align: center;
  padding: 56px 20px;
  color: var(--text-secondary);
}

.empty-state-icon {
  font-size: 40px;
  margin-bottom: 12px;
  opacity: 0.4;
}

/* === SECTIONS === */
.section-light {
  padding: 80px 24px;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  margin-top: 60px;
}

.section-white {
  padding: 80px 24px;
  background: var(--bg);
}

.section-title {
  text-align: center;
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 40px;
}

/* === FEATURES === */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
  max-width: 800px;
  margin: 0 auto;
}

.feature {
  text-align: center;
  padding: 32px 24px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
}

.feature-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 14px;
}

.feature h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}

.feature p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* === FAQ === */
.faq-list { display: flex; flex-direction: column; gap: 8px; }

.faq {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.faq summary {
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background var(--transition);
}

.faq summary:hover { background: var(--bg-surface); }

.faq summary::after {
  content: '+';
  font-size: 18px;
  color: var(--text-muted);
  font-weight: 400;
}

.faq[open] summary::after { content: '−'; }

.faq p {
  padding: 0 20px 16px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* === FOOTER === */
.footer {
  padding: 32px 24px;
  border-top: 1px solid var(--border);
  background: var(--bg-elevated);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-brand {
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
}

.footer-copy {
  font-size: 13px;
  color: var(--text-tertiary);
  margin-left: 8px;
}

.footer-right {
  font-size: 12px;
  color: var(--text-muted);
}

.footer-right a { color: var(--text-secondary); text-decoration: underline; }

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

/* === RESPONSIVE === */
@media (max-width: 640px) {
  .scanner-box { padding: 16px; }
  .input-row { flex-direction: column; }
  .input-wrap { width: 100%; }
  .btn-scan { width: 100%; justify-content: center; }
  .kpis { grid-template-columns: repeat(2, 1fr); }
  .results-top { flex-direction: column; gap: 12px; }
  .tabs { gap: 2px; }
  .tab { padding: 8px 10px; font-size: 13px; }
  .hero { padding: 40px 16px 24px; }
  .section-light, .section-white { padding: 48px 16px; }
  .footer-inner { flex-direction: column; text-align: center; }
}