:root {
  color-scheme: light dark;
  --bg: #f4f5f7;
  --card: #ffffff;
  --text: #1a1a1a;
  --muted: #6b7280;
  --border: #e2e4e9;
  --accent: #2e7d32;
  --accent-hover: #256428;
  --danger-bg: #fdecea;
  --danger-text: #b3261e;
  --ok-bg: #e8f5e9;
  --ok-text: #1e7d32;
  --warn-bg: #fff8e1;
  --warn-text: #8a6d00;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a;
    --card: #1d2025;
    --text: #eceef1;
    --muted: #9aa1ab;
    --border: #2c3038;
    --accent: #4caf50;
    --accent-hover: #5cc161;
    --danger-bg: #3a1f1e;
    --danger-text: #ff8a80;
    --ok-bg: #1b3a20;
    --ok-text: #81c784;
    --warn-bg: #332b0a;
    --warn-text: #ffd54f;
  }
}
* { box-sizing: border-box; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  max-width: 720px;
  margin: 0 auto;
  padding: 2rem 1.2rem 4rem;
  line-height: 1.5;
}
a { color: var(--accent); }
.topbar { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.5rem; flex-wrap: wrap; gap: 0.6rem; }
.brand { display: flex; align-items: center; gap: 0.6rem; }
.brand h1 { font-size: 1.15rem; margin: 0; font-weight: 600; }
.lang-switch { display: flex; gap: 0.3rem; }
.lang-switch button {
  font: inherit; font-size: 0.75rem; color: var(--muted);
  padding: 0.25rem 0.55rem; border-radius: 5px; border: 1px solid var(--border);
  background: transparent; cursor: pointer;
}
.lang-switch button.active { color: var(--text); border-color: var(--accent); font-weight: 600; }

nav.tabs { display: flex; gap: 0.4rem; margin-bottom: 1.5rem; flex-wrap: wrap; }
nav.tabs button {
  font: inherit; font-size: 0.85rem; padding: 0.5rem 0.9rem; border-radius: 8px;
  border: 1px solid var(--border); background: var(--card); color: var(--text); cursor: pointer;
}
nav.tabs button.active { background: var(--accent); color: white; border-color: var(--accent); }

.view { display: none; }
.view.active { display: block; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.4rem;
  margin-bottom: 1.2rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}
.card h2 { font-size: 1.05rem; margin: 0 0 0.6rem; }
.card h3 { font-size: 0.95rem; margin: 1rem 0 0.4rem; }
.card p { margin: 0.4rem 0; }
.card ul { margin: 0.4rem 0; padding-left: 1.2rem; }
.card li { margin: 0.3rem 0; }

.flag-list { list-style: none; padding: 0; margin: 0; }
.flag-list li {
  display: flex; gap: 0.6rem; padding: 0.6rem 0; border-bottom: 1px solid var(--border);
}
.flag-list li:last-child { border-bottom: none; }
.flag-icon { flex-shrink: 0; }
.flag-title { font-weight: 600; font-size: 0.9rem; }
.flag-desc { font-size: 0.85rem; color: var(--muted); }

.progress-bar {
  height: 6px; border-radius: 3px; background: var(--border); overflow: hidden; margin-bottom: 0.8rem;
}
.progress-bar > div { height: 100%; background: var(--accent); transition: width 0.3s; }

.mock-email {
  border: 1px solid var(--border); border-radius: 10px; overflow: hidden; margin-bottom: 1rem;
}
.mock-email .me-header { background: var(--bg); padding: 0.8rem 1rem; font-size: 0.82rem; border-bottom: 1px solid var(--border); }
.mock-email .me-header div { margin: 0.15rem 0; }
.mock-email .me-header .me-label { color: var(--muted); display: inline-block; min-width: 4.5rem; }
.mock-email .me-body { padding: 1rem; font-size: 0.9rem; white-space: pre-wrap; }
.mock-email .me-link {
  display: inline-block; margin-top: 0.6rem; padding: 0.4rem 0.7rem;
  border: 1px solid var(--accent); border-radius: 6px; color: var(--accent); font-size: 0.85rem;
}

.choice-row { display: flex; gap: 0.6rem; margin-top: 1rem; flex-wrap: wrap; }
button.choice {
  flex: 1; min-width: 130px; font: inherit; font-size: 0.95rem; padding: 0.7rem 1rem; cursor: pointer;
  border: 1px solid var(--border); border-radius: 8px; background: var(--card); color: var(--text); font-weight: 600;
}
button.choice:hover { border-color: var(--accent); }
button.choice.phishing:hover { border-color: var(--danger-text); }
button.choice.legit:hover { border-color: var(--ok-text); }

.feedback { padding: 0.9rem 1rem; border-radius: 8px; margin-top: 1rem; font-size: 0.88rem; }
.feedback.correct { background: var(--ok-bg); color: var(--ok-text); }
.feedback.incorrect { background: var(--danger-bg); color: var(--danger-text); }
.feedback ul { margin: 0.5rem 0 0; padding-left: 1.1rem; }

.qcm-options { list-style: none; padding: 0; margin: 1rem 0 0; display: flex; flex-direction: column; gap: 0.5rem; }
.qcm-options button {
  text-align: left; font: inherit; font-size: 0.88rem; padding: 0.65rem 0.9rem; cursor: pointer;
  border: 1px solid var(--border); border-radius: 8px; background: var(--card); color: var(--text);
}
.qcm-options button:hover { border-color: var(--accent); }
.qcm-options button.right { background: var(--ok-bg); border-color: var(--ok-text); color: var(--ok-text); }
.qcm-options button.wrong { background: var(--danger-bg); border-color: var(--danger-text); color: var(--danger-text); }

.btn {
  font: inherit; font-size: 0.9rem; padding: 0.6rem 1.1rem; cursor: pointer;
  border: none; border-radius: 8px; background: var(--accent); color: white; font-weight: 600;
}
.btn:hover { background: var(--accent-hover); }
.btn.secondary { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.nav-row { display: flex; justify-content: space-between; align-items: center; margin-top: 1.2rem; gap: 0.6rem; }
.counter { font-size: 0.8rem; color: var(--muted); }

.score-big { font-size: 2.4rem; font-weight: 700; text-align: center; margin: 0.5rem 0; }
.score-msg { text-align: center; font-size: 0.95rem; margin-bottom: 1rem; }
.score-pass { color: var(--ok-text); }
.score-fail { color: var(--danger-text); }

.badge {
  display: inline-block; font-size: 0.7rem; font-weight: 700; letter-spacing: 0.02em;
  padding: 0.15rem 0.5rem; border-radius: 5px; text-transform: uppercase;
}
.badge.phishing { background: var(--danger-bg); color: var(--danger-text); }
.badge.legit { background: var(--ok-bg); color: var(--ok-text); }

@media (max-width: 480px) {
  body { padding: 1.2rem 0.8rem 3rem; }
  .card { padding: 1rem; border-radius: 10px; }
  nav.tabs button { flex: 1; padding: 0.5rem 0.4rem; font-size: 0.78rem; }
}