/* Free Theory — our own visual identity.
   Violet/teal, rounded, soft-shadow "learning app" look (intentionally not the
   official navy/yellow gov style). */

:root {
    --ink:          #1f1b30;
    --ink-soft:     #423d57;
    --muted:        #6b6880;
    --bg:           #f4f3fb;
    --surface:      #ffffff;

    --primary:      #6d28d9;  /* violet-700 */
    --primary-dark: #5b21b6;
    --primary-light:#8b5cf6;
    --accent:       #0d9488;  /* teal-600 */
    --accent-dark:  #0f766e;

    --success:      #16a34a;
    --success-bg:   #e7f7ec;
    --danger:       #e11d48;
    --danger-bg:    #ffe4ea;

    --border:       #e6e2f3;
    --radius:       14px;
    --radius-sm:    9px;
    --shadow:       0 10px 30px rgba(76, 29, 149, .10);
    --shadow-sm:    0 4px 14px rgba(76, 29, 149, .08);
    --maxw:         980px;

    /* Gauge sweep: violet -> cyan (low to high). */
    --g-start:      #8b5cf6;
    --g-end:        #06b6d4;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    font-family: "Plus Jakarta Sans", "Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
    color: var(--ink);
    background: var(--bg);
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--primary); }
a:hover { color: var(--primary-dark); }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 18px; }

h1 { font-size: 2rem; margin: 0 0 16px; letter-spacing: -.02em; }
h2 { font-size: 1.4rem; letter-spacing: -.01em; }
h3 { font-size: 1.15rem; }
.muted { color: var(--muted); }
.lead { font-size: 1.18rem; color: var(--ink-soft); }
.hint { font-weight: 400; color: var(--muted); font-size: .85rem; }

/* --- Header / nav --- */
.site-header {
    background: rgba(255,255,255,.82);
    backdrop-filter: saturate(180%) blur(12px);
    -webkit-backdrop-filter: saturate(180%) blur(12px);
    border-bottom: 1px solid var(--border);
    position: sticky; top: 0; z-index: 50;
}
.header-inner {
    display: flex; align-items: center; justify-content: space-between;
    flex-wrap: wrap; gap: 10px; padding: 12px 0;
}
.brand { display: flex; align-items: center; gap: 11px; text-decoration: none; font-weight: 800; font-size: 1.2rem; color: var(--ink); }
.brand-mark {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff; border-radius: 10px; padding: 5px 10px; font-weight: 800; letter-spacing: .5px;
    box-shadow: var(--shadow-sm);
}
.main-nav { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.main-nav a { color: var(--ink-soft); text-decoration: none; font-weight: 600; }
.main-nav a:hover { color: var(--primary); }
.main-nav a.btn-primary, .main-nav a.btn-primary:hover { color: #fff; }
.main-nav a.btn-ghost { color: var(--primary); }

/* --- Layout --- */
.page { padding: 30px 0 56px; }

/* --- Buttons --- */
.btn {
    display: inline-flex; align-items: center; gap: 7px;
    border: 2px solid transparent; border-radius: 999px;
    padding: 10px 22px; font-size: 1rem; font-weight: 700; cursor: pointer;
    text-decoration: none; transition: transform .12s ease, box-shadow .12s ease, background .12s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--primary); color: #fff; box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: var(--primary-dark); color: #fff; }
.btn-ghost { background: transparent; color: var(--primary); border-color: var(--primary-light); }
.btn-ghost:hover { background: rgba(109,40,217,.07); color: var(--primary); }
.btn-outline { background: transparent; color: var(--accent-dark); border-color: var(--accent); }
.btn-outline:hover { background: rgba(13,148,136,.08); color: var(--accent-dark); }
.btn-ghost-dark { background: var(--success-bg); color: var(--success); border-color: transparent; }
.btn-light { background: #fff; color: var(--primary-dark); box-shadow: var(--shadow-sm); }
.btn-light:hover { background: #fff; color: var(--primary-dark); box-shadow: 0 8px 22px rgba(0,0,0,.18); }
.btn-glass { background: rgba(255,255,255,.14); color: #fff; border-color: rgba(255,255,255,.55); }
.btn-glass:hover { background: rgba(255,255,255,.24); color: #fff; }
.btn-lg { padding: 13px 28px; font-size: 1.08rem; }
.btn-block { width: 100%; justify-content: center; }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none; }

/* --- Surfaces --- */
.auth-card, .qa-area, .mock-panel, .dashboard, .hazard, .practice,
.my-learning, .study, .course { }
.auth-card, .mock-panel, .dashboard, .hazard, .practice, .study {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow-sm);
}
.auth-card { max-width: 430px; margin: 0 auto; }

/* --- Hero --- */
.hero {
    position: relative; overflow: hidden;
    background:
        radial-gradient(120% 120% at 85% 10%, #7c3aed 0%, transparent 45%),
        linear-gradient(150deg, #4c1d95 0%, #6d28d9 55%, #7c3aed 100%);
    color: #fff; border-radius: 24px; padding: 56px 44px;
    box-shadow: 0 24px 60px rgba(76,29,149,.30);
}
.hero-blob { position: absolute; border-radius: 50%; filter: blur(8px); opacity: .5; pointer-events: none; }
.hero-blob-1 { width: 320px; height: 320px; right: -80px; top: -120px; background: radial-gradient(circle, #a78bfa, transparent 70%); }
.hero-blob-2 { width: 260px; height: 260px; left: -90px; bottom: -120px; background: radial-gradient(circle, #22d3ee, transparent 70%); opacity: .35; }

.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; align-items: center; }
.eyebrow {
    display: inline-block; font-size: .82rem; font-weight: 700; letter-spacing: .03em;
    color: #e9d5ff; background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.22);
    padding: 6px 14px; border-radius: 999px; margin-bottom: 18px;
}
.hero h1 { font-size: 2.9rem; line-height: 1.08; margin: 0 0 16px; font-weight: 800; }
.hero .grad { background: linear-gradient(90deg, #c4b5fd, #67e8f9); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero .lead { color: #e4dafa; max-width: 30em; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin: 26px 0 22px; }
.trust-row { list-style: none; display: flex; flex-wrap: wrap; gap: 18px; padding: 0; margin: 0; }
.trust-row li { display: inline-flex; align-items: center; gap: 7px; font-size: .92rem; font-weight: 600; color: #e9e2fb; }
.trust-row .ic { width: 18px; height: 18px; fill: none; stroke: #67e8f9; stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; }

/* Hero product card */
.hero-visual { position: relative; }
.hero-card {
    background: rgba(255,255,255,.97); color: var(--ink); border-radius: 20px;
    padding: 22px 24px 26px; box-shadow: 0 30px 60px rgba(20,16,31,.35);
}
.hero-card-head { display: flex; align-items: center; justify-content: space-between; }
.hero-card-title { font-weight: 800; color: var(--ink); }
.hero-card-badge { font-size: .72rem; font-weight: 700; color: var(--primary-dark); background: #efeafd; padding: 4px 10px; border-radius: 999px; }
.hero-card-gauge { text-align: center; margin: 6px 0 10px; }
.hero-card-gauge .gauge { max-width: 180px; }
.hero-card-stats { display: grid; gap: 11px; }
.hcs-row { display: grid; grid-template-columns: 1fr 96px; align-items: center; gap: 10px; font-size: .82rem; font-weight: 600; color: var(--ink-soft); }
.hcs-bar { height: 8px; background: #eee8f8; border-radius: 999px; overflow: hidden; }
.hcs-bar i { display: block; height: 100%; border-radius: 999px; background: linear-gradient(90deg, var(--g-start), var(--g-end)); }
.hero-chip {
    position: absolute; background: #fff; color: var(--ink); font-weight: 700; font-size: .82rem;
    padding: 9px 14px; border-radius: 12px; box-shadow: 0 12px 26px rgba(20,16,31,.25);
}
.hero-chip-1 { top: -16px; left: -22px; color: var(--success); }
.hero-chip-2 { bottom: -14px; right: -16px; color: var(--primary-dark); }

/* --- Feature cards --- */
.features, .card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px; margin-top: 26px; }
.feature-card {
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 26px 24px; box-shadow: var(--shadow-sm); transition: transform .15s ease, box-shadow .15s ease;
}
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.feature-card h2, .feature-card h3 { margin: 14px 0 8px; color: var(--ink); font-size: 1.2rem; }
.feature-card p { color: var(--ink-soft); margin: 0; }
.icon-badge { display: inline-grid; place-items: center; width: 48px; height: 48px; border-radius: 14px; }
.icon-badge svg { width: 24px; height: 24px; fill: none; stroke: #fff; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.ib-violet { background: linear-gradient(135deg, #6d28d9, #8b5cf6); }
.ib-teal   { background: linear-gradient(135deg, #0d9488, #14b8a6); }
.ib-pink   { background: linear-gradient(135deg, #db2777, #f472b6); }

/* --- How it works --- */
.how { margin-top: 48px; }
.section-title { text-align: center; font-size: 1.7rem; margin: 0 0 26px; }
.how-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 18px; }
.how-step { position: relative; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px 22px 22px; box-shadow: var(--shadow-sm); }
.how-num { display: inline-grid; place-items: center; width: 38px; height: 38px; border-radius: 50%; background: linear-gradient(135deg, var(--primary), var(--primary-light)); color: #fff; font-weight: 800; margin-bottom: 12px; box-shadow: var(--shadow-sm); }
.how-step h3 { margin: 0 0 6px; }
.how-step p { margin: 0; color: var(--ink-soft); }
.how-cta { text-align: center; margin-top: 28px; }

/* --- Forms --- */
form label { display: block; font-weight: 700; margin-bottom: 16px; }
form input {
    display: block; width: 100%; margin-top: 6px; padding: 11px 13px; font-size: 1rem;
    border: 2px solid var(--border); border-radius: var(--radius-sm); background: #fff;
}
form input:focus { outline: none; border-color: var(--primary-light); box-shadow: 0 0 0 3px rgba(139,92,246,.25); }
.alert { padding: 12px 14px; border-radius: var(--radius-sm); margin-bottom: 16px; }
.alert-error { background: var(--danger-bg); color: var(--danger); }

/* --- Q&A (practice + mock) --- */
.qa-area { padding: 0; }
.qa-meta { color: var(--muted); margin-bottom: 8px; }
.tag { display: inline-block; background: #efeafd; color: var(--primary-dark); border-radius: 999px; padding: 2px 11px; font-size: .8rem; font-weight: 600; }
.qa-question { margin: 6px 0 18px; }
.options { display: grid; gap: 10px; }
.option {
    display: flex; align-items: center; gap: 12px; text-align: left; width: 100%;
    background: #fff; border: 2px solid var(--border); border-radius: var(--radius-sm);
    padding: 13px 15px; font-size: 1rem; cursor: pointer; transition: border-color .12s, background .12s;
}
.option:hover:not(:disabled) { border-color: var(--primary-light); }
.option.selected { border-color: var(--primary); background: #f3eefe; }
.option-letter { flex: 0 0 30px; height: 30px; line-height: 30px; text-align: center; background: var(--primary); color: #fff; border-radius: 8px; font-weight: 800; }
.option.correct { border-color: var(--success); background: var(--success-bg); }
.option.correct .option-letter { background: var(--success); }
.option.incorrect { border-color: var(--danger); background: var(--danger-bg); }
.option.incorrect .option-letter { background: var(--danger); }
.feedback { margin-top: 16px; padding: 13px 15px; border-radius: var(--radius-sm); }
.feedback-correct { background: var(--success-bg); }
.feedback-incorrect { background: var(--danger-bg); }
.qa-controls { margin-top: 16px; }
.loading { color: var(--muted); }

/* --- Mock test --- */
.mock-bar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; padding-bottom: 12px; border-bottom: 1px solid var(--border); font-weight: 700; }
.timer { font-variant-numeric: tabular-nums; font-size: 1.2rem; color: var(--primary-dark); }
.timer-low { color: var(--danger); }
.facts { list-style: none; padding: 0; display: flex; gap: 24px; flex-wrap: wrap; }
.mock-nav { display: flex; gap: 10px; margin-top: 20px; }
#mock-next { margin-left: auto; }
.result-summary { text-align: center; padding: 26px; border-radius: var(--radius); margin-bottom: 20px; }
.result-summary.pass { background: var(--success-bg); }
.result-summary.fail { background: var(--danger-bg); }
.result-summary h2 { margin: 0; }
.big-score { font-size: 2.6rem; font-weight: 800; margin: 6px 0; }
.review-list { display: grid; gap: 10px; }
.review-item { border-left: 5px solid var(--border); padding: 11px 15px; background: var(--bg); border-radius: var(--radius-sm); }
.review-item.ok { border-left-color: var(--success); }
.review-item.bad { border-left-color: var(--danger); }
.review-q { font-weight: 700; margin: 0 0 6px; }
.review-label { color: var(--muted); font-weight: 700; }

/* --- My learning hub --- */
.my-learning > h1 { margin-bottom: 4px; }
.course-cards { display: grid; gap: 18px; margin-top: 22px; }
.course-card {
    display: flex; gap: 20px; align-items: center; justify-content: space-between;
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 24px 26px; box-shadow: var(--shadow-sm);
}
.course-card h2 { margin: 0 0 8px; color: var(--primary-dark); }
.course-card-body { flex: 1 1 auto; max-width: 620px; }
.course-card-body p { color: var(--ink-soft); }
.course-meta { list-style: none; padding: 0; margin: 16px 0 0; display: grid; gap: 6px; color: var(--ink-soft); font-size: .95rem; }
.course-card-gauge { flex: 0 0 170px; text-align: center; }
.gauge-caption { display: block; font-weight: 700; color: var(--primary-dark); margin-top: 2px; }

/* --- Course page --- */
.breadcrumb { margin-bottom: 14px; font-size: .92rem; color: var(--muted); }
.breadcrumb a { text-decoration: none; }
.course-banner {
    background: linear-gradient(150deg, #5b21b6, #7c3aed); color: #fff;
    border-radius: var(--radius); padding: 22px 26px; box-shadow: var(--shadow-sm);
}
.course-banner h1 { margin: 0; color: #fff; font-size: 1.6rem; }
.readiness-panel {
    display: flex; gap: 22px; align-items: center; justify-content: space-between;
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 24px 26px; margin: 18px 0 26px; box-shadow: var(--shadow-sm);
}
.readiness-text { flex: 1 1 auto; }
.readiness-text h2 { margin: 0 0 6px; color: var(--primary-dark); }
.readiness-gauge { flex: 0 0 210px; }
.calc { margin-top: 12px; }
.calc summary { cursor: pointer; color: var(--primary); font-weight: 600; }
.calc[open] summary { margin-bottom: 8px; }
.calc ul { margin: 8px 0; }

/* --- Steps timeline --- */
.steps { list-style: none; margin: 0; padding: 0; }
.step { display: grid; grid-template-columns: 42px 1fr; column-gap: 20px; position: relative; }
.step-num {
    width: 42px; height: 42px; border-radius: 50%; border: 2px solid var(--primary);
    color: var(--primary); background: var(--surface); display: grid; place-items: center;
    font-weight: 800; z-index: 1;
}
.step:not(:last-child)::before {
    content: ''; position: absolute; left: 20px; top: 46px; bottom: 0; width: 2px; background: var(--border);
}
.step-body { padding-bottom: 30px; }
.step-body h3 { margin: 6px 0 8px; }
.step-stat { margin-top: 12px; color: var(--ink-soft); font-size: .95rem; }

/* --- Study module list --- */
.study .btn { margin-bottom: 4px; }
.module-list { list-style: none; padding: 0; margin: 22px 0 0; display: grid; gap: 12px; }
.module {
    display: flex; gap: 16px; align-items: center; justify-content: space-between;
    border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 16px 18px; background: #fff;
}
.module-done { background: var(--success-bg); border-color: #bfe6cb; }
.module-main h3 { margin: 0 0 4px; font-size: 1.05rem; }
.module-main p { margin: 0; font-size: .9rem; }
.module-form { flex: 0 0 auto; }

/* --- Dashboard --- */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 16px; margin: 18px 0 28px; }
.stat { background: linear-gradient(150deg, var(--primary), var(--primary-light)); color: #fff; border-radius: var(--radius); padding: 18px; text-align: center; }
.stat-value { display: block; font-size: 2rem; font-weight: 800; }
.stat-label { color: #e9e2fb; font-size: .9rem; }
.data-table { width: 100%; border-collapse: collapse; }
.data-table th, .data-table td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); }
.data-table th { background: var(--bg); }

/* --- Hazard perception --- */
.clip-picker { margin: 12px 0 16px; }
.clip-picker select { padding: 9px 11px; border-radius: var(--radius-sm); border: 2px solid var(--border); font-size: 1rem; }
.video-wrap { position: relative; background: #14101f; border-radius: var(--radius); overflow: hidden; }
#hazard-video { display: block; width: 100%; max-height: 480px; background: #14101f; cursor: crosshair; }
.video-placeholder { display: flex; flex-direction: column; align-items: center; justify-content: center; min-height: 260px; color: #d8d2ea; text-align: center; padding: 24px; }
.video-placeholder .muted { color: #9b93b5; }
.video-placeholder code { background: #2a2340; padding: 2px 6px; border-radius: 4px; }
.flag-bar { position: relative; height: 26px; background: #2a2340; }
.flag {
    position: absolute; top: 4px; width: 0; height: 0; transform: translateX(-2px);
    border-left: 12px solid var(--accent); border-top: 9px solid transparent; border-bottom: 9px solid transparent;
    filter: drop-shadow(0 1px 1px rgba(0,0,0,.4));
}
.hazard-controls { display: flex; align-items: center; gap: 16px; margin: 16px 0; }
.hazard-score { font-weight: 800; font-size: 1.1rem; color: var(--primary-dark); }
.hazard-result { padding: 18px; border-radius: var(--radius-sm); background: var(--bg); border: 1px solid var(--border); }
.hazard-result.fail { background: var(--danger-bg); }
.hazard-breakdown { margin: 8px 0 0; padding-left: 20px; }

/* --- Gauge SVG --- */
.gauge { width: 100%; max-width: 210px; height: auto; display: inline-block; }
.gauge-track { stroke: #ece8f6; stroke-width: 16; }
.gauge-value { stroke-width: 16; }
.gauge-needle { stroke: var(--ink); stroke-width: 4; stroke-linecap: round; }
.gauge-hub { fill: var(--ink); }
.gauge-number { fill: var(--primary-dark); font-size: 26px; font-weight: 800; }

/* --- Footer --- */
.site-footer { background: var(--ink); color: #b8b2cc; padding: 22px 0; margin-top: 44px; font-size: .9rem; }

/* --- Responsive --- */
@media (max-width: 880px) {
    .hero-grid { grid-template-columns: 1fr; gap: 30px; }
    .hero-visual { max-width: 380px; margin: 0 auto; width: 100%; }
}
@media (max-width: 640px) {
    .hero { padding: 40px 24px; border-radius: 20px; }
    .hero h1 { font-size: 2rem; }
    .hero-chip-1 { left: 0; }
    .hero-chip-2 { right: 0; }
    h1 { font-size: 1.65rem; }
    .course-card { flex-direction: column-reverse; align-items: stretch; text-align: center; }
    .course-card-gauge { flex-basis: auto; }
    .course-meta { justify-items: center; }
    .readiness-panel { flex-direction: column-reverse; align-items: stretch; text-align: center; }
    .readiness-gauge { flex-basis: auto; }
    .mock-nav { flex-wrap: wrap; }
    #mock-next { margin-left: 0; }
    .module { flex-direction: column; align-items: stretch; }
}