/* Styles for quiz.html */
.quiz-layout { display:grid; grid-template-columns:1fr; gap:2.5rem; margin-bottom:3rem; }
@media(min-width:992px){ .quiz-layout { grid-template-columns:1.8fr 1fr; } }
.quiz-card { background:var(--card-bg); border:1px solid var(--border-color); border-radius:var(--radius-lg); padding:2.5rem; box-shadow:var(--card-shadow); position:relative; overflow:hidden; }
.quiz-card::before { content:''; position:absolute; top:0; left:0; right:0; height:3px; background:var(--accent-gradient); }

/* Tier Info & Access Banner */
.tier-banner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1.1rem;
    border-radius: var(--radius-md, 8px);
    margin-bottom: 1.25rem;
    gap: 0.75rem;
    flex-wrap: wrap;
}
.free-tier-banner {
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.25);
}
.pro-tier-banner {
    background: rgba(16, 185, 129, 0.08);
    border: 1px solid rgba(16, 185, 129, 0.25);
}
.tier-badge-group {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    flex-wrap: wrap;
}
.free-badge {
    background: rgba(99, 102, 241, 0.2);
    color: #818cf8;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.25rem 0.65rem;
    border-radius: 20px;
    letter-spacing: 0.02em;
}
.pro-badge {
    background: rgba(16, 185, 129, 0.2);
    color: #34d399;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.25rem 0.65rem;
    border-radius: 20px;
    letter-spacing: 0.02em;
}
.tier-text {
    font-size: 0.85rem;
    color: var(--text-secondary);
}
.tier-text strong {
    color: var(--text-primary);
}
.btn-unlock-pro-pill {
    background: var(--accent-gradient);
    color: #fff;
    font-size: 0.8rem;
    font-weight: 700;
    padding: 0.35rem 0.85rem;
    border-radius: 20px;
    text-decoration: none;
    transition: var(--transition);
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
    white-space: nowrap;
}
.btn-unlock-pro-pill:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.45);
    color: #fff;
}
.tier-user-badge {
    font-size: 0.82rem;
    color: var(--accent-emerald, #34d399);
    font-weight: 600;
}

/* Rotation info banner */
.rotation-badge-wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(56, 189, 248, 0.08);
    border: 1px solid rgba(56, 189, 248, 0.2);
    border-radius: var(--radius-md, 8px);
    padding: 0.6rem 1rem;
    margin-bottom: 1.5rem;
    font-size: 0.85rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}
.rotation-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--accent-blue, #38bdf8);
    font-weight: 600;
}
.rotation-countdown {
    color: var(--text-muted, #94a3b8);
    font-size: 0.8rem;
}

/* In-Quiz Question Tier Indicator & Topic Prompt */
.quiz-tier-hint {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(99, 102, 241, 0.06);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-sm, 6px);
    padding: 0.55rem 0.9rem;
    margin-bottom: 1.25rem;
    font-size: 0.82rem;
    color: var(--text-secondary);
    flex-wrap: wrap;
    gap: 0.5rem;
}
.tier-hint-free {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    flex-wrap: wrap;
}
.tier-hint-free strong {
    color: var(--text-primary);
}
.tier-hint-pro {
    color: var(--accent-emerald, #34d399);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}
.tier-hint-free a {
    color: var(--accent-blue, #38bdf8);
    font-weight: 600;
    text-decoration: underline;
    transition: var(--transition);
}
.tier-hint-free a:hover {
    color: #fff;
}

/* Tabs */
.quiz-tabs { display:flex; gap:.5rem; margin-bottom:2rem; flex-wrap:wrap; }
.quiz-tab { background:var(--bg-tertiary); border:1px solid var(--border-color); color:var(--text-secondary); padding:.45rem 1.1rem; border-radius:20px; font-size:.85rem; font-weight:600; cursor:pointer; transition:var(--transition); font-family:var(--font-sans); display:inline-flex; align-items:center; gap:.4rem; }
.quiz-tab:hover { color:var(--text-primary); border-color:var(--border-hover); }
.quiz-tab.active { background:var(--accent-gradient); color:#fff; border-color:transparent; }
.quiz-tab-count { font-size:.7rem; background:rgba(255,255,255,.2); padding:.1rem .4rem; border-radius:10px; }
.quiz-tab:not(.active) .quiz-tab-count { background:var(--bg-primary); color:var(--text-muted); }

.quiz-spinner { width:36px; height:36px; border:3px solid var(--border-color); border-top-color:var(--accent-blue); border-radius:50%; animation:spin .8s linear infinite; margin:0 auto; }
@keyframes spin { to { transform:rotate(360deg); } }

.quiz-progress-wrap { margin-bottom:2rem; }
.quiz-progress-info { display:flex; justify-content:space-between; font-size:.8rem; color:var(--text-muted); margin-bottom:.5rem; }
.quiz-progress-bar { height:6px; background:var(--bg-tertiary); border-radius:10px; overflow:hidden; }
.quiz-progress-fill { height:100%; background:var(--accent-gradient); border-radius:10px; transition:width .4s ease; }
.quiz-question-num { font-size:.75rem; font-weight:700; text-transform:uppercase; letter-spacing:.08em; color:var(--accent-blue); margin-bottom:.75rem; }
.quiz-question-text { font-size:1.25rem; margin-bottom:2rem; line-height:1.45; }
.quiz-options { display:flex; flex-direction:column; gap:.85rem; margin-bottom:1.75rem; }
.quiz-option { display:flex; align-items:center; gap:1rem; background:var(--bg-tertiary); border:1px solid var(--border-color); border-radius:var(--radius-sm); padding:1rem 1.25rem; cursor:pointer; transition:var(--transition); font-family:var(--font-sans); font-size:.95rem; color:var(--text-primary); text-align:left; width:100%; }
.quiz-option:hover:not(:disabled) { border-color:var(--border-hover); background:var(--card-bg); }
.quiz-option .opt-letter { min-width:28px; height:28px; border-radius:50%; background:var(--bg-primary); border:1px solid var(--border-color); display:flex; align-items:center; justify-content:center; font-size:.75rem; font-weight:700; flex-shrink:0; transition:var(--transition); }
.quiz-option.correct { border-color:var(--accent-emerald); background:rgba(16,185,129,.08); }
.quiz-option.correct .opt-letter { background:var(--accent-emerald); color:#fff; border-color:var(--accent-emerald); }
.quiz-option.wrong { border-color:#ef4444; background:rgba(239,68,68,.08); }
.quiz-option.wrong .opt-letter { background:#ef4444; color:#fff; border-color:#ef4444; }
.quiz-option:disabled { cursor:not-allowed; opacity:.85; }
.quiz-explanation { display:none; background:rgba(59,130,246,.07); border:1px solid rgba(59,130,246,.2); border-radius:var(--radius-sm); padding:1rem 1.25rem; font-size:.88rem; color:var(--text-secondary); line-height:1.6; margin-bottom:1.75rem; }
.quiz-explanation.visible { display:block; }
.quiz-explanation strong { color:var(--text-primary); }
.quiz-nav { display:flex; justify-content:space-between; gap:1rem; }
.quiz-btn { min-width:130px; padding:.75rem 1.5rem; text-align:center; }
.btn-secondary { background:none; border:1px solid var(--border-hover); color:var(--text-primary); border-radius:var(--radius-sm); font-weight:600; cursor:pointer; transition:var(--transition); font-family:var(--font-sans); }
.btn-secondary:hover { background:var(--bg-tertiary); }

/* Results Screen */
.quiz-results { text-align:center; padding:1.5rem 0; }
.result-icon { font-size:3.5rem; margin-bottom:0.75rem; }
.quiz-results h2 { font-size:1.8rem; margin-bottom:0.5rem; }
.result-score { font-size:3.5rem; font-weight:800; background:var(--accent-gradient); -webkit-background-clip:text; -webkit-text-fill-color:transparent; margin-bottom:.5rem; }
.result-msg { color:var(--text-secondary); max-width:480px; margin:0 auto 1.5rem; }

.result-email-alert {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid #10b981;
    border-radius: var(--radius-sm, 6px);
    padding: 0.85rem 1.2rem;
    font-size: 0.9rem;
    color: #6ee7b7;
    margin: 0 auto 1.75rem;
    max-width: 520px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.result-breakdown { display:grid; grid-template-columns:repeat(3,1fr); gap:1rem; margin:0 auto 2rem; max-width:440px; }
.result-stat { background:var(--bg-tertiary); border-radius:var(--radius-sm); padding:1rem; border:1px solid var(--border-color); }
.result-stat-num { font-size:1.6rem; font-weight:800; }
.result-stat-label { font-size:.75rem; color:var(--text-muted); }

/* Pro Upgrade Incentive Card on Results Screen */
.unlock-pro-card {
    position: relative;
    background: linear-gradient(145deg, rgba(30, 41, 59, 0.9), rgba(15, 23, 42, 0.95));
    border: 1px solid rgba(99, 102, 241, 0.4);
    border-radius: var(--radius-md, 12px);
    padding: 2rem;
    margin: 2rem auto;
    text-align: left;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.4), 0 0 15px rgba(99, 102, 241, 0.15);
    overflow: hidden;
}
.unlock-pro-glow {
    position: absolute;
    top: -50px;
    right: -50px;
    width: 150px;
    height: 150px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.25) 0%, rgba(99, 102, 241, 0) 70%);
    pointer-events: none;
}
.unlock-pro-header {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.25rem;
}
.unlock-pro-icon {
    font-size: 2.2rem;
    line-height: 1;
}
.unlock-pro-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.35rem;
}
.unlock-pro-subtitle {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.5;
}
.unlock-pro-features {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1.75rem;
    background: rgba(15, 23, 42, 0.6);
    padding: 1rem 1.25rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}
.pro-feature-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}
.pro-feature-item strong {
    color: var(--text-primary);
}
.pro-feat-icon {
    font-size: 1.1rem;
    flex-shrink: 0;
}
.unlock-pro-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}
.quiz-btn-pro {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-weight: 700;
    font-size: 0.92rem;
    text-decoration: none;
    border-radius: var(--radius-sm, 6px);
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
    flex: 1;
    min-width: 220px;
    text-align: center;
}
.quiz-btn-reg {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-weight: 700;
    font-size: 0.92rem;
    text-decoration: none;
    border-radius: var(--radius-sm, 6px);
    flex: 1;
    min-width: 180px;
    text-align: center;
}

/* Optional Guest Email Delivery */
.guest-email-capture {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 1.25rem;
    margin-top: 0.5rem;
}
.guest-email-label {
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-bottom: 0.6rem;
}
.guest-email-row {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}
.guest-email-input {
    flex: 1;
    min-width: 200px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm, 6px);
    padding: 0.6rem 0.9rem;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.88rem;
}
.guest-email-input:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.15);
}
.guest-email-btn {
    padding: 0.6rem 1.1rem;
    font-size: 0.85rem;
    white-space: nowrap;
}
.guest-email-msg {
    font-size: 0.85rem;
    margin-top: 0.5rem;
}

/* Detailed Question Reviews */
.answers-review-container {
    text-align: left;
    margin-top: 2.5rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}
.answers-review-title {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 1.2rem;
    color: var(--text-primary);
}
.review-item {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm, 6px);
    padding: 1.2rem;
    margin-bottom: 1rem;
}
.review-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.6rem;
}
.review-q-num {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-muted);
}
.review-badge {
    font-size: 0.72rem;
    font-weight: 700;
    padding: 0.2rem 0.55rem;
    border-radius: 4px;
    text-transform: uppercase;
}
.badge-pass { background: rgba(16, 185, 129, 0.2); color: #34d399; }
.badge-fail { background: rgba(239, 68, 68, 0.2); color: #f87171; }
.badge-skip { background: rgba(100, 116, 139, 0.2); color: #94a3b8; }

.review-q-text {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}
.review-choice {
    font-size: 0.88rem;
    padding: 0.5rem 0.75rem;
    border-radius: 4px;
    margin-bottom: 0.4rem;
}
.review-choice-user-wrong {
    background: rgba(239, 68, 68, 0.1);
    color: #fca5a5;
    border-left: 3px solid #ef4444;
}
.review-choice-user-correct {
    background: rgba(16, 185, 129, 0.1);
    color: #6ee7b7;
    border-left: 3px solid #10b981;
}
.review-choice-correct {
    background: rgba(56, 189, 248, 0.1);
    color: #bae6fd;
    border-left: 3px solid #0284c7;
}
.review-explanation {
    margin-top: 0.6rem;
    font-size: 0.82rem;
    color: var(--text-muted);
    background: var(--bg-primary);
    padding: 0.6rem 0.85rem;
    border-radius: 4px;
    border-left: 3px solid var(--accent-blue);
}

.score-ring-wrap { position:relative; width:120px; height:120px; margin:.5rem auto 1.5rem; }
.score-ring { transform:rotate(-90deg); width:100%; height:100%; }
.ring-bg { fill:none; stroke:var(--bg-tertiary); stroke-width:10; }
.ring-fill { fill:none; stroke:url(#grad); stroke-width:10; stroke-linecap:round; stroke-dasharray:251.2; transition:stroke-dashoffset .6s ease; }
.score-ring-label { position:absolute; top:50%; left:50%; transform:translate(-50%,-50%); text-align:center; }
.score-ring-num { display:block; font-size:1.8rem; font-weight:800; line-height:1; }
.score-ring-den { font-size:.75rem; color:var(--text-muted); }
.score-stats { display:flex; justify-content:space-around; text-align:center; }
.score-stat { font-size:.8rem; color:var(--text-muted); }
.score-stat span { display:block; font-size:1.4rem; font-weight:800; color:var(--text-primary); margin-bottom:.2rem; }
.score-stat.correct span { color:var(--accent-emerald); }
.score-stat.wrong span { color:#f87171; }
.tips-list { list-style:none; display:flex; flex-direction:column; gap:.75rem; font-size:.88rem; color:var(--text-secondary); }
.tips-list li { padding-left:1.2rem; position:relative; }
.tips-list li::before { content:'→'; position:absolute; left:0; color:var(--accent-blue); font-weight:700; }

.pro-sidebar-widget {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.08), rgba(6, 182, 212, 0.08));
    border: 1px solid rgba(99, 102, 241, 0.3);
}