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

:root {
  --bg-deep: #060b14;
  --bg-surface: #0b1322;
  --bg-elevated: #111d30;
  --bg-drawer: #0f1a2a;
  --border-dim: #172438;
  --border-mid: #1f3150;
  --text-primary: #e4ebf5;
  --text-secondary: #8899bb;
  --text-muted: #4d6380;
  --accent-green: #00d4aa;
  --accent-green-bg: rgba(0,212,170,0.1);
  --accent-red: #ff4757;
  --accent-red-bg: rgba(255,71,87,0.1);
  --accent-yellow: #ffc312;
  --accent-yellow-bg: rgba(255,195,18,0.1);
  --accent-blue: #4a9eff;
  --accent-blue-bg: rgba(74,158,255,0.1);
  --accent-purple: #a855f7;
  --accent-purple-bg: rgba(168,85,247,0.1);
  --risk-low: #00d4aa;
  --risk-moderate: #ffc312;
  --risk-high: #ff6b35;
  --risk-critical: #ff4757;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;
  --font-ui: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-mono: 'Cascadia Code', 'Fira Code', 'JetBrains Mono', 'Consolas', monospace;
  --top-bar-h: 44px;
  --content-max: 1200px;

  --green: var(--accent-green);
  --red: var(--accent-red);
  --yellow: var(--accent-yellow);
  --blue: var(--accent-blue);
  --purple: var(--accent-purple);

  --ease: cubic-bezier(0.4,0,0.2,1);
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-ui);
  background: var(--bg-deep);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
  padding-top: var(--top-bar-h);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===== TOP BAR ===== */
.top-bar {
  position: fixed;
  inset: 0 0 auto;
  height: var(--top-bar-h);
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-dim);
  z-index: 100;
}
.top-bar-inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 12px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.top-bar-left {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}
.top-bar-shield {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}
.top-bar-title {
  display: flex;
  align-items: baseline;
  gap: 4px;
}
.top-bar-name {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: -0.2px;
  white-space: nowrap;
}
.top-bar-ver {
  font-size: 10px;
  color: var(--text-muted);
}
.offline-badge {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: 10px;
  font-weight: 600;
  color: var(--accent-green);
  background: var(--accent-green-bg);
  padding: 1px 8px;
  border-radius: var(--radius-full);
  white-space: nowrap;
}
.offline-badge svg { width: 10px; height: 10px; }

.top-bar-right {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.score-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  line-height: 1;
}
.score-badge-num {
  font-size: 17px;
  font-weight: 800;
  font-family: var(--font-mono);
  transition: color 0.3s ease;
}
.score-badge-label {
  font-size: 8px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.scan-time {
  font-size: 10px;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.btn-icon {
  width: 30px;
  height: 30px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-dim);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--ease), border-color var(--ease), color var(--ease);
}
.btn-icon:hover {
  background: var(--bg-elevated);
  border-color: var(--border-mid);
  color: var(--text-primary);
}
.btn-icon svg { width: 15px; height: 15px; }

/* ===== MAIN ===== */
.main-content {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 14px 10px 32px;
}

/* ===== RISK BAR ===== */
.risk-bar-section {
  background: var(--bg-surface);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-lg);
  padding: 14px 16px;
  margin-bottom: 12px;
}
.risk-bar-label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}
.risk-bar-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}
.risk-bar-threat {
  font-size: 11px;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: var(--radius-full);
}
.risk-bar-threat.threat-low { background: var(--accent-green-bg); color: var(--accent-green); }
.risk-bar-threat.threat-moderate { background: var(--accent-yellow-bg); color: var(--accent-yellow); }
.risk-bar-threat.threat-high { background: rgba(255,107,53,0.15); color: var(--risk-high); }
.risk-bar-threat.threat-critical { background: var(--accent-red-bg); color: var(--accent-red); }

.risk-bar-track {
  position: relative;
  height: 18px;
  background: var(--bg-deep);
  border-radius: var(--radius-full);
  margin-bottom: 10px;
  overflow: hidden;
}
.risk-bar-track::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--accent-green), var(--accent-yellow) 50%, var(--risk-high) 75%, var(--accent-red));
  opacity: 0.12;
  border-radius: var(--radius-full);
}
.risk-bar-fill {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  border-radius: var(--radius-full);
  background: linear-gradient(90deg, var(--accent-green), var(--accent-yellow));
  transition: width 1s var(--ease);
  width: 0%;
  will-change: width;
}
.risk-bar-indicator {
  position: absolute;
  top: 50%;
  transform: translate(-50%,-50%);
  transition: left 1s var(--ease);
  left: 0%;
  pointer-events: none;
  will-change: left;
}
.risk-bar-score {
  display: inline-block;
  font-size: 11px;
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--text-primary);
  background: var(--bg-elevated);
  border: 1px solid var(--border-mid);
  padding: 0 6px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  line-height: 1.6;
}
.risk-bar-stats {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}
.risk-stat {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: 11px;
  color: var(--text-secondary);
  font-variant-numeric: tabular-nums;
}
.rs-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}
.rs-protected .rs-dot { background: var(--accent-green); }
.rs-exposed .rs-dot { background: var(--accent-red); }
.rs-warning .rs-dot { background: var(--accent-yellow); }
.rs-info .rs-dot { background: var(--accent-blue); }
.rs-deductions { color: var(--text-muted); margin-left: auto; }

/* ===== CATEGORY TABS ===== */
.cat-tabs {
  display: flex;
  gap: 3px;
  margin-bottom: 12px;
  background: var(--bg-surface);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-lg);
  padding: 3px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.cat-tab {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: background var(--ease), color var(--ease);
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 500;
  white-space: nowrap;
  flex-shrink: 0;
  min-height: 36px;
  -webkit-tap-highlight-color: transparent;
}
.cat-tab:hover { color: var(--text-secondary); background: rgba(255,255,255,0.03); }
.cat-tab.active { color: var(--text-primary); background: var(--bg-elevated); }
.cat-tab svg { width: 15px; height: 15px; flex-shrink: 0; }
.cat-tab-dots {
  display: flex;
  gap: 2px;
  margin-left: 1px;
}
.cat-tab-dots .dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  transition: background 0.3s ease;
}
.cat-tab-dots .dot.blocked { background: var(--accent-green); }
.cat-tab-dots .dot.exposed { background: var(--accent-red); }
.cat-tab-dots .dot.warning { background: var(--accent-yellow); }
.cat-tab-dots .dot.info { background: var(--accent-blue); }

/* ===== SCAN PROGRESS ===== */
.scan-progress {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  padding: 8px 14px;
  background: var(--bg-surface);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-md);
  transition: border-color 0.3s ease;
}
.scan-progress.complete { border-color: rgba(0,212,170,0.2); }
.scan-progress-bar {
  flex: 1;
  height: 3px;
  background: var(--bg-deep);
  border-radius: 2px;
  overflow: hidden;
}
.scan-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-green));
  border-radius: 2px;
  transition: width 0.4s ease;
  width: 0%;
  will-change: width;
}
.scan-progress-text {
  font-size: 11px;
  color: var(--text-secondary);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

/* ===== PANEL ===== */
.panel-container {
  background: var(--bg-surface);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-lg);
  overflow: hidden;
  content-visibility: auto;
  contain-intrinsic-size: 400px;
}
.panel-header {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 14px 16px 0;
}
.panel-header h2 {
  font-size: 15px;
  font-weight: 700;
}
.panel-subtitle {
  font-size: 11px;
  color: var(--text-muted);
}
.panel-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 8px;
  padding: 12px 16px 16px;
}

/* ===== LANDING PAGE ===== */
.landing {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - var(--top-bar-h) - 80px);
  padding: 20px 10px;
}
.landing-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-xl);
  padding: 48px 40px 40px;
  max-width: 480px;
  width: 100%;
  text-align: center;
  box-shadow: var(--shadow-lg);
}
.landing-shield {
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
}
.landing-shield svg { width: 100%; height: 100%; }
.landing-title {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.3px;
  margin-bottom: 10px;
}
.landing-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 22px;
}
.landing-features {
  list-style: none;
  text-align: left;
  margin-bottom: 28px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.landing-features li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
}
.landing-features li svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}
.landing-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 32px;
  border: none;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--accent-green), #00b894);
  color: #060b14;
  font-family: var(--font-ui);
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: transform var(--ease), box-shadow var(--ease);
  box-shadow: 0 4px 20px rgba(0, 212, 170, 0.25);
}
.landing-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(0, 212, 170, 0.35);
}
.landing-btn:active {
  transform: translateY(0);
}
.landing-btn svg { width: 16px; height: 16px; }
.landing-footer-note {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 16px;
}

/* ===== SAVE SECTION ===== */
.save-section {
  display: flex;
  justify-content: center;
  margin-top: 16px;
}
.save-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border: 1px solid var(--accent-blue);
  border-radius: var(--radius-md);
  background: var(--accent-blue-bg);
  color: var(--accent-blue);
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--ease), transform var(--ease);
}
.save-btn:hover {
  background: rgba(74, 158, 255, 0.2);
  transform: translateY(-1px);
}
.save-btn:active {
  transform: translateY(0);
}
.save-btn svg { width: 16px; height: 16px; }

/* ===== BROWSER HARDENING GUIDE ===== */
.harden-section {
  margin-top: 20px;
  background: var(--bg-surface);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-lg);
  padding: 18px 20px 16px;
}
.harden-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}
.harden-header svg { width: 20px; height: 20px; color: var(--accent-purple); flex-shrink: 0; }
.harden-header h3 { font-size: 15px; font-weight: 700; }
.harden-badge {
  font-size: 9px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  padding: 2px 7px;
  border-radius: var(--radius-full);
  background: var(--accent-purple-bg);
  color: var(--accent-purple);
  margin-left: auto;
}
.harden-intro {
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 14px;
  line-height: 1.5;
}
.harden-card {
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-md);
  margin-bottom: 8px;
  overflow: hidden;
  transition: border-color var(--ease);
}
.harden-card:hover { border-color: var(--border-mid); }
.harden-card-header {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 10px 14px;
  border: none;
  background: transparent;
  color: var(--text-primary);
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  text-align: left;
  transition: background var(--ease);
}
.harden-card-header:hover { background: rgba(255,255,255,0.02); }
.harden-card-header svg:first-child { width: 16px; height: 16px; color: var(--text-muted); flex-shrink: 0; }
.harden-chevron {
  width: 14px; height: 14px;
  margin-left: auto;
  color: var(--text-muted);
  transition: transform 0.2s ease;
  flex-shrink: 0;
}
.harden-card-header.open .harden-chevron { transform: rotate(180deg); }
.harden-card-body {
  display: none;
  padding: 0 14px 12px;
  border-top: 1px solid var(--border-dim);
}
.harden-card-body.open { display: block; }
.harden-setting {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255,255,255,0.03);
}
.harden-setting:last-child { border-bottom: none; }
.harden-setting code {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent-blue);
  background: rgba(74,158,255,0.06);
  padding: 2px 6px;
  border-radius: 3px;
  display: inline-block;
  word-break: break-all;
}
.harden-setting span {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.4;
}
.harden-note {
  font-size: 11px;
  color: var(--text-muted);
  padding: 8px 0 4px;
  font-style: italic;
  line-height: 1.4;
}

/* ===== FOOTER ===== */
.footer {
  text-align: center;
  padding: 16px 12px;
  border-top: 1px solid var(--border-dim);
  max-width: var(--content-max);
  margin: 0 auto;
}
.footer p {
  font-size: 11px;
  color: var(--text-muted);
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-mid); border-radius: 2px; }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .top-bar-name { font-size: 12px; }
  .offline-badge { font-size: 9px; padding: 0 6px; }
  .offline-badge svg { display: none; }
  .risk-bar-section { padding: 12px 14px; }
  .risk-bar-stats { gap: 8px; }
  .risk-stat { font-size: 10px; }
  .cat-tab { padding: 8px 10px; font-size: 11px; }
  .cat-tab .cat-tab-name { display: none; }
  .panel-grid { grid-template-columns: 1fr; padding: 10px 12px 14px; gap: 6px; }
  .panel-header { padding: 12px 12px 0; }
  .panel-header h2 { font-size: 14px; }
}

@media (max-width: 480px) {
  :root { --top-bar-h: 40px; }
  .top-bar-inner { padding: 0 8px; }
  .top-bar-name { font-size: 11px; }
  .top-bar-ver { display: none; }
  .offline-badge { display: none; }
  .score-badge-num { font-size: 14px; }
  .scan-time { font-size: 9px; }
  .main-content { padding: 10px 6px 24px; }
  .risk-bar-section { padding: 10px 10px; border-radius: var(--radius-md); }
  .risk-bar-track { height: 14px; }
  .risk-bar-score { font-size: 10px; padding: 0 4px; }
  .risk-bar-stats .rs-deductions { margin-left: 0; width: 100%; text-align: right; }
  .cat-tabs { gap: 2px; padding: 2px; }
  .cat-tab { padding: 6px 8px; font-size: 10px; min-height: 32px; gap: 4px; }
  .cat-tab svg { width: 13px; height: 13px; }
  .scan-progress { padding: 6px 10px; }
  .panel-grid { padding: 8px 10px 12px; }
  .drawer { max-height: 85vh; }
  .drawer-header { padding: 12px 14px; }
  .drawer-body { padding: 12px 14px 20px; }
}

@media (max-width: 480px) {
  .landing-card { padding: 32px 20px 28px; }
  .landing-shield { width: 56px; height: 56px; }
  .landing-title { font-size: 18px; }
  .landing-desc { font-size: 13px; }
  .landing-btn { width: 100%; justify-content: center; padding: 14px 24px; }
}

/* Touch-friendly targets */
@media (pointer: coarse) {
  .cat-tab { min-height: 40px; }
  .tc-detail-btn { padding: 6px 12px; font-size: 12px; }
  .btn-icon { width: 36px; height: 36px; }
  .drawer-close { width: 36px; height: 36px; }
}