/* ===== Theme variables ===== */
:root,
[data-theme="dark"] {
  --bg: #0b0f1a;
  --bg-2: #111827;
  --panel: #151b2c;
  --panel-2: #1a2238;
  --border: #2a3350;
  --text: #e5e9f5;
  --muted: #8a93b1;
  --primary: #4f8cff;
  --primary-2: #6ea8ff;
  --accent: #00d8a4;
  --danger: #ff5577;
  --warning: #ffb547;
  --good: #36d399;
  --shadow: 0 10px 30px rgba(0,0,0,0.35);
}

[data-theme="light"] {
  --bg: #f3f5fb;
  --bg-2: #ffffff;
  --panel: #ffffff;
  --panel-2: #f7f9ff;
  --border: #dde3f2;
  --text: #1a2238;
  --muted: #5a6588;
  --primary: #2563eb;
  --primary-2: #3b82f6;
  --accent: #059669;
  --danger: #dc2626;
  --warning: #d97706;
  --good: #16a34a;
  --shadow: 0 8px 24px rgba(20,30,60,0.08);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: radial-gradient(1200px 800px at 10% -20%, rgba(79,140,255,0.08), transparent 60%),
              radial-gradient(1000px 700px at 100% 0%, rgba(0,216,164,0.06), transparent 60%),
              var(--bg);
  color: var(--text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ===== Layout ===== */
.app {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}

.sidebar {
  background: linear-gradient(180deg, var(--panel), var(--panel-2));
  border-right: 1px solid var(--border);
  padding: 1.25rem 1rem;
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}
.brand-logo {
  width: 44px; height: 44px;
  display: grid; place-items: center;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  font-size: 1.5rem;
  box-shadow: var(--shadow);
}
.brand h1 { margin: 0; font-size: 1.05rem; letter-spacing: 0.2px; }
.brand p { margin: 0; font-size: 0.75rem; color: var(--muted); }

.nav { display: flex; flex-direction: column; gap: 4px; flex: 1; }
.nav-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.65rem 0.8rem;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text);
  text-align: left;
  border-radius: 10px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: all 0.15s ease;
}
.nav-item:hover { background: var(--panel-2); border-color: var(--border); }
.nav-item.active {
  background: linear-gradient(90deg, rgba(79,140,255,0.15), transparent);
  border-color: var(--primary);
  color: var(--primary-2);
}
.nav-item span { width: 20px; text-align: center; }

.sidebar-footer { margin-top: 1rem; }
.theme-btn {
  width: 100%;
  background: var(--panel-2);
  border: 1px solid var(--border);
  padding: 0.7rem;
  color: var(--text);
  border-radius: 10px;
  cursor: pointer;
  font-size: 0.9rem;
}
.theme-btn:hover { border-color: var(--primary); }

/* ===== Main ===== */
.main { padding: 2rem 2.5rem; max-width: 1400px; }
.section { display: none; animation: fadein 0.3s ease; }
.section.active { display: block; }
@keyframes fadein { from { opacity:0; transform: translateY(6px);} to {opacity:1; transform:none;} }

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.page-header h2 { margin: 0; font-size: 1.6rem; }
.muted { color: var(--muted); margin: 0.25rem 0 0; }
.small { font-size: 0.8rem; }

.section-title { margin: 1.5rem 0 0.75rem; }

/* ===== Cards & Grids ===== */
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.25rem 1.4rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow);
}
.card h3 { margin-top: 0; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
@media (max-width: 800px) { .grid-2 { grid-template-columns: 1fr; } }

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-bottom: 0.5rem;
}
@media (max-width: 1000px) { .stats-grid { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 540px) { .stats-grid { grid-template-columns: 1fr; } }

.stat-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1rem 1.2rem;
  box-shadow: var(--shadow);
}
.stat-label { color: var(--muted); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.5px; }
.stat-value { font-size: 1.8rem; font-weight: 700; margin: 0.4rem 0 0.6rem; }
.stat-bar { background: var(--panel-2); height: 6px; border-radius: 4px; overflow: hidden; }
.stat-fill { height: 100%; background: linear-gradient(90deg, var(--primary), var(--accent)); transition: width 0.4s; }

.threat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px,1fr));
  gap: 1rem;
}
.threat-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem;
  cursor: pointer;
  transition: transform 0.15s, border-color 0.15s;
}
.threat-card:hover { transform: translateY(-3px); border-color: var(--primary); }
.threat-card .icon { font-size: 1.6rem; margin-bottom: 0.5rem; }
.threat-card h4 { margin: 0 0 0.3rem; }
.threat-card p { margin: 0; color: var(--muted); font-size: 0.85rem; }

/* ===== Risk badges ===== */
.risk-badge {
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border: 1px solid;
}
.risk-low { color: var(--good); border-color: var(--good); background: rgba(54,211,153,0.1); }
.risk-medium { color: var(--warning); border-color: var(--warning); background: rgba(255,181,71,0.1); }
.risk-high { color: var(--danger); border-color: var(--danger); background: rgba(255,85,119,0.12); }
.risk-critical { color: #fff; background: var(--danger); border-color: var(--danger); }

.risk-bar-low { background: var(--good) !important; }
.risk-bar-medium { background: var(--warning) !important; }
.risk-bar-high { background: var(--danger) !important; }

/* ===== Buttons / Inputs ===== */
.btn {
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  padding: 0.65rem 1.1rem;
  border-radius: 10px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: all 0.15s;
}
.btn:hover { border-color: var(--primary); }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-2); }
.btn-success { background: var(--good); border-color: var(--good); color: #fff; }
.btn-danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn-ghost { background: transparent; }
.btn-row { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-top: 0.75rem; }

.input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-2);
  color: var(--text);
  font-size: 0.95rem;
  margin-top: 0.5rem;
}
.input:focus { outline: none; border-color: var(--primary); }

/* ===== Email mock ===== */
.email-mock {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem;
  margin: 0.5rem 0;
  font-size: 0.9rem;
}
.email-mock .from { color: var(--muted); font-size: 0.8rem; }
.email-mock .subject { font-weight: 600; margin: 0.4rem 0; }
.email-mock .body { color: var(--text); white-space: pre-wrap; }
.email-mock .suspicious { background: rgba(255,85,119,0.18); border-bottom: 1px dashed var(--danger); padding: 0 2px; }

/* ===== Code block ===== */
.code-block {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.85rem 1rem;
  font-family: "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.85rem;
  color: var(--accent);
  white-space: pre-wrap;
  word-break: break-word;
  min-height: 50px;
}
.bad-label { color: var(--danger); }
.good-label { color: var(--good); }

/* ===== Result message ===== */
.result {
  margin-top: 0.75rem;
  padding: 0.75rem 1rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-2);
  display: none;
}
.result.show { display: block; }
.result.ok { border-color: var(--good); color: var(--good); }
.result.bad { border-color: var(--danger); color: var(--danger); }

/* ===== Strength meter ===== */
.strength-meter {
  background: var(--panel-2);
  height: 12px;
  border-radius: 6px;
  overflow: hidden;
  margin-top: 0.75rem;
  border: 1px solid var(--border);
}
.strength-fill {
  height: 100%;
  width: 0%;
  background: var(--danger);
  transition: width 0.3s, background 0.3s;
}
.strength-label { margin-top: 0.5rem; font-weight: 600; }
.info-box { background: var(--bg-2); border: 1px solid var(--border); border-radius: 10px; padding: 1rem; }
.info-label { color: var(--muted); font-size: 0.8rem; text-transform: uppercase; }
.info-value { font-size: 1.1rem; font-weight: 600; margin-top: 0.3rem; }
.suggestions { margin-top: 1rem; }
.suggestions ul { padding-left: 1.2rem; color: var(--muted); }

/* ===== Login mock ===== */
.login-mock { display: flex; flex-direction: column; gap: 0.5rem; max-width: 420px; }

/* ===== Quiz ===== */
.quiz-card .quiz-options {
  display: grid;
  gap: 0.5rem;
  margin-top: 0.75rem;
}
.quiz-opt {
  background: var(--bg-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.75rem 1rem;
  border-radius: 10px;
  cursor: pointer;
  text-align: left;
  font-size: 0.9rem;
  transition: all 0.15s;
}
.quiz-opt:hover { border-color: var(--primary); }
.quiz-opt.correct { background: rgba(54,211,153,0.18); border-color: var(--good); color: var(--good); }
.quiz-opt.wrong { background: rgba(255,85,119,0.18); border-color: var(--danger); color: var(--danger); }
.btn.correct { background: rgba(54,211,153,0.18); border-color: var(--good); color: var(--good); }
.btn.wrong { background: rgba(255,85,119,0.18); border-color: var(--danger); color: var(--danger); }
.btn:disabled { opacity: 0.85; cursor: default; }

/* ===== Malware terminal ===== */
.malware-screen {
  margin-top: 1rem;
  background: #000;
  border-radius: 10px;
  border: 1px solid var(--border);
  height: 280px;
  overflow: hidden;
  display: none;
}
.malware-screen.active { display: block; }
.terminal {
  font-family: "SF Mono", Menlo, monospace;
  font-size: 0.85rem;
  color: #00ff88;
  padding: 1rem;
  height: 100%;
  overflow-y: auto;
  white-space: pre-wrap;
}
.terminal .red { color: #ff5577; }
.terminal .yellow { color: #ffd166; }

/* ===== Virus grid ===== */
.virus-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 4px;
  margin-top: 1rem;
}
.virus-cell {
  aspect-ratio: 1/1;
  background: var(--panel-2);
  border-radius: 4px;
  border: 1px solid var(--border);
  transition: background 0.4s, transform 0.4s;
}
.virus-cell.infected {
  background: var(--danger);
  transform: scale(1.05);
  box-shadow: 0 0 12px rgba(255,85,119,0.6);
}

/* ===== Ransom Overlay ===== */
.ransom-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.92);
  display: grid;
  place-items: center;
  z-index: 1000;
  animation: fadein 0.3s;
}
.ransom-overlay.hidden { display: none; }
.ransom-content {
  text-align: center;
  color: #ff3355;
  padding: 2rem;
  max-width: 500px;
  font-family: "SF Mono", Menlo, monospace;
}
.ransom-icon { font-size: 5rem; margin-bottom: 1rem; }
.ransom-content h1 { color: #ff3355; letter-spacing: 2px; font-size: 1.4rem; }
.ransom-content p { color: #ddd; margin: 0.6rem 0; }
.ransom-timer { font-size: 1.6rem; color: #ffd166; font-weight: 700; }
.ransom-warn { color: #ffd166; font-size: 0.85rem; }

/* ===== Scenario / social ===== */
.scenario {
  background: var(--bg-2);
  border-left: 4px solid var(--warning);
  border-radius: 8px;
  padding: 1rem;
  margin-bottom: 0.75rem;
}
.scenario-meta {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 0.6rem;
}
.scenario-tag {
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  font-size: 0.7rem;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}
.scenario-progress {
  font-size: 0.8rem;
  color: var(--muted);
  margin-top: 0.4rem;
}
.scenario-score {
  display: flex;
  gap: 1rem;
  align-items: center;
  margin-top: 0.5rem;
  font-weight: 600;
}

/* ===== Phishing extras ===== */
.filter-row {
  display: flex;
  gap: 0.6rem;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 0.75rem;
}
.input.compact {
  width: auto;
  margin-top: 0;
  padding: 0.4rem 0.6rem;
  font-size: 0.85rem;
}
.phish-counter {
  margin-left: auto;
  color: var(--muted);
  font-size: 0.85rem;
}

.walkthrough {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem;
  min-height: 220px;
  font-size: 0.9rem;
}
.walkthrough .step-label {
  color: var(--primary-2);
  font-size: 0.75rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}
.walkthrough .step-headline { font-weight: 600; font-size: 1.05rem; margin-bottom: 0.5rem; }
.walkthrough .clue-highlight {
  background: rgba(255,85,119,0.18);
  border: 1px dashed var(--danger);
  padding: 0.05rem 0.3rem;
  border-radius: 4px;
}
.walkthrough .step-explain {
  margin-top: 0.6rem;
  color: var(--muted);
  border-left: 3px solid var(--primary);
  padding: 0.3rem 0.75rem;
  background: var(--panel-2);
  border-radius: 0 6px 6px 0;
}
.walkthrough-progress {
  background: var(--panel-2);
  height: 5px;
  border-radius: 3px;
  margin-top: 0.75rem;
  overflow: hidden;
}
.walkthrough-progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transition: width 0.3s;
}

.url-report {
  margin-top: 0.75rem;
  display: none;
}
.url-report.show { display: block; }
.url-summary {
  padding: 0.75rem 1rem;
  border-radius: 10px;
  margin-bottom: 0.75rem;
  border: 1px solid var(--border);
  font-weight: 600;
}
.url-summary.safe { color: var(--good); border-color: var(--good); background: rgba(54,211,153,0.1); }
.url-summary.warn { color: var(--warning); border-color: var(--warning); background: rgba(255,181,71,0.12); }
.url-summary.bad  { color: var(--danger);  border-color: var(--danger);  background: rgba(255,85,119,0.12); }
.url-checks { display: grid; gap: 0.5rem; }
.url-check {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.6rem 0.85rem;
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 0.6rem;
  font-size: 0.88rem;
}
.url-check .icon { font-size: 1.1rem; line-height: 1; }
.url-check.ok    { border-left: 4px solid var(--good); }
.url-check.warn  { border-left: 4px solid var(--warning); }
.url-check.fail  { border-left: 4px solid var(--danger); }
.url-check .label { font-weight: 600; }
.url-check .detail { color: var(--muted); margin-top: 0.15rem; }

/* ===== Table ===== */
.table { width: 100%; border-collapse: collapse; margin-top: 0.5rem; }
.table th, .table td { text-align: left; padding: 0.6rem 0.5rem; border-bottom: 1px solid var(--border); font-size: 0.9rem; }
.table th { color: var(--muted); font-weight: 600; }

/* ===== Checklist ===== */
.checklist { display: flex; flex-direction: column; gap: 0.5rem; margin: 0.5rem 0; }
.checklist label { display: flex; gap: 0.6rem; align-items: center; cursor: pointer; }

/* ===== Certificate ===== */
.certificate { text-align: center; padding: 1rem; }
.cert-border {
  border: 4px double var(--primary);
  border-radius: 16px;
  padding: 2rem;
  background: linear-gradient(135deg, rgba(79,140,255,0.05), rgba(0,216,164,0.05));
}
.cert-border h2 { font-size: 1.6rem; margin: 0; color: var(--primary); }
.cert-border h3 { margin: 0.6rem 0; font-size: 1.3rem; }
.cert-score { font-weight: 600; font-size: 1.1rem; margin: 1rem 0; }
.cert-date { color: var(--muted); font-size: 0.85rem; }

.hidden { display: none !important; }

/* ===== Footer ===== */
.site-footer {
  margin-top: 3rem;
  padding: 1.5rem 0 1rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
}
.site-footer a {
  color: var(--primary-2);
  text-decoration: none;
  font-weight: 600;
}
.site-footer a:hover { text-decoration: underline; }

/* ===== Code tag ===== */
code {
  background: var(--bg-2);
  border: 1px solid var(--border);
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
  font-size: 0.85rem;
  color: var(--accent);
}

/* ===== Mobile menu ===== */
.menu-toggle {
  display: none;
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 200;
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--text);
  width: 42px;
  height: 42px;
  border-radius: 10px;
  font-size: 1.2rem;
  cursor: pointer;
  box-shadow: var(--shadow);
}

@media (max-width: 900px) {
  .app { grid-template-columns: 1fr; }
  .sidebar {
    position: fixed;
    left: -280px;
    top: 0;
    width: 260px;
    z-index: 150;
    transition: left 0.3s;
  }
  .sidebar.open { left: 0; }
  .main { padding: 4.5rem 1.25rem 2rem; }
  .menu-toggle { display: block; }
}