/* ==========================================================================
   MCQ ASSESSMENT ENVIRONMENT STYLES
   ========================================================================== */

.assessment-page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-base);
    color: var(--text-primary);
}

/* Assessment Top Header */
.assessment-nav {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(11, 17, 32, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    padding: 12px 24px;
}

.assessment-nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.nav-left-group {
    display: flex;
    align-items: center;
    gap: 16px;
}

.assessment-back-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: var(--border-radius-sm);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.assessment-back-link:hover {
    color: var(--color-cyan);
    border-color: rgba(6, 182, 212, 0.4);
    background: rgba(6, 182, 212, 0.08);
}

.exam-meta-header {
    display: flex;
    align-items: center;
    gap: 10px;
}

.exam-title-heading {
    font-size: 1.1rem;
    font-weight: 700;
    font-family: var(--font-heading);
    color: var(--text-primary);
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 480px;
}

.exam-code-tag {
    background: rgba(6, 182, 212, 0.15);
    border: 1px solid rgba(6, 182, 212, 0.35);
    color: var(--color-cyan);
    font-size: 0.72rem;
    font-weight: 800;
    padding: 3px 8px;
    border-radius: 9999px;
    letter-spacing: 0.5px;
}

.nav-right-group {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* Header Syllabus Button */
.btn-header-syllabus {
    background: rgba(6, 182, 212, 0.12);
    border: 1px solid rgba(6, 182, 212, 0.4);
    color: var(--color-cyan);
    padding: 7px 14px;
    border-radius: var(--border-radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 7px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-header-syllabus:hover {
    background: rgba(6, 182, 212, 0.22);
    box-shadow: 0 0 16px rgba(6, 182, 212, 0.3);
    transform: translateY(-1px);
}

/* Live Timer Box */
.timer-box {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    border-radius: var(--border-radius-sm);
    background: rgba(15, 23, 42, 0.8);
    border: 1px solid var(--border-color);
    font-family: monospace;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 1px;
}

.timer-box i {
    color: var(--color-cyan);
}

.timer-box.warning {
    border-color: rgba(239, 68, 68, 0.5);
    background: rgba(239, 68, 68, 0.15);
    color: #f87171;
    animation: pulseWarning 1s infinite;
}

.timer-box.warning i {
    color: #ef4444;
}

@keyframes pulseWarning {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

/* Student Profile Pill in Header */
.student-nav-pill {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.82rem;
    color: var(--text-secondary);
}

.student-nav-pill img {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 1px solid var(--primary);
}

/* Progress Tracker Bar */
.assessment-progress-wrapper {
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.05);
}

.assessment-progress-fill {
    height: 100%;
    background: var(--accent-gradient);
    width: 0%;
    transition: width 0.3s ease;
}

/* Main Assessment Workspace */
.assessment-workspace {
    flex: 1;
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
    padding: 24px 20px;
    display: flex;
    flex-direction: column;
}

/* Two-column layout: question content vs question navigation palette */
.exam-grid-layout {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 24px;
    align-items: start;
}

/* Left: Active Question Card */
.active-question-card {
    background: rgba(13, 18, 33, 0.7);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 28px;
    display: flex;
    flex-direction: column;
    gap: 22px;
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
}

.question-meta-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 16px;
    flex-wrap: wrap;
}

.question-index-badge {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-cyan);
}

.question-badges-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.badge-difficulty {
    font-size: 0.72rem;
    font-weight: 700;
    padding: 3px 8px;
    border-radius: var(--border-radius-sm);
    text-transform: uppercase;
}

.badge-difficulty.easy {
    background: rgba(16, 185, 129, 0.15);
    border: 1px solid rgba(16, 185, 129, 0.35);
    color: #34d399;
}

.badge-difficulty.medium {
    background: rgba(245, 158, 11, 0.15);
    border: 1px solid rgba(245, 158, 11, 0.35);
    color: #fbbf24;
}

.badge-difficulty.difficult {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.35);
    color: #f87171;
}

.badge-session {
    font-size: 0.75rem;
    color: var(--text-muted);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    padding: 3px 8px;
    border-radius: var(--border-radius-sm);
}

/* Question Prompt */
.question-prompt-text {
    font-size: 1.15rem;
    line-height: 1.6;
    color: var(--text-primary);
    font-weight: 500;
}

.question-code-block {
    background: #060913;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    padding: 14px 18px;
    font-family: 'JetBrains Mono', Consolas, Monaco, monospace;
    font-size: 0.9rem;
    color: #e2e8f0;
    overflow-x: auto;
    white-space: pre;
    line-height: 1.5;
}

/* Options Container */
.question-options-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.option-choice-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 16px 18px;
    border-radius: var(--border-radius-md);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
}

.option-choice-item:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(6, 182, 212, 0.4);
    transform: translateX(4px);
}

.option-choice-item.selected {
    background: rgba(6, 182, 212, 0.1);
    border-color: var(--primary);
    box-shadow: 0 0 16px rgba(6, 182, 212, 0.2);
}

.option-radio-indicator {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-secondary);
    background: rgba(0, 0, 0, 0.2);
    flex-shrink: 0;
    margin-top: 1px;
    transition: all var(--transition-fast);
}

.option-choice-item.selected .option-radio-indicator {
    border-color: var(--primary);
    background: var(--primary);
    color: #ffffff;
}

.option-choice-text {
    flex: 1;
    font-size: 0.98rem;
    line-height: 1.5;
    color: var(--text-primary);
}

/* Question Action Toolbar */
.question-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    gap: 12px;
    flex-wrap: wrap;
}

.toolbar-left,
.toolbar-right {
    display: flex;
    align-items: center;
    gap: 10px;
}

.btn-flag-review {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 8px 14px;
    border-radius: var(--border-radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-flag-review:hover {
    color: #f59e0b;
    border-color: rgba(245, 158, 11, 0.4);
}

.btn-flag-review.active {
    background: rgba(245, 158, 11, 0.15);
    border-color: #f59e0b;
    color: #fbbf24;
}

.btn-clear-selection {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 0.82rem;
    cursor: pointer;
    padding: 6px 10px;
    transition: color var(--transition-fast);
}

.btn-clear-selection:hover {
    color: var(--text-primary);
}

/* Right: Navigator Palette */
.navigator-palette-card {
    background: rgba(13, 18, 33, 0.7);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 22px;
    display: flex;
    flex-direction: column;
    gap: 18px;
    position: sticky;
    top: 80px;
}

.palette-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
}

.palette-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin: 0;
}

.palette-legend {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    font-size: 0.75rem;
    color: var(--text-secondary);
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 5px;
}

.legend-dot {
    width: 9px;
    height: 9px;
    border-radius: 50%;
}

.legend-dot.answered { background: #10b981; }
.legend-dot.unanswered { background: rgba(255, 255, 255, 0.2); }
.legend-dot.flagged { background: #f59e0b; }

/* Grid of Numbers */
.palette-numbers-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 8px;
    max-height: 380px;
    overflow-y: auto;
    padding-right: 4px;
}

.palette-number-btn {
    aspect-ratio: 1;
    border-radius: var(--border-radius-sm);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.palette-number-btn:hover {
    border-color: var(--color-cyan);
    color: var(--text-primary);
    transform: scale(1.05);
}

.palette-number-btn.current {
    border-color: var(--primary) !important;
    box-shadow: 0 0 10px rgba(6, 182, 212, 0.4);
    font-weight: 800;
    color: var(--color-cyan);
}

.palette-number-btn.answered {
    background: rgba(16, 185, 129, 0.2);
    border-color: rgba(16, 185, 129, 0.5);
    color: #34d399;
}

.palette-number-btn.flagged {
    background: rgba(245, 158, 11, 0.2);
    border-color: rgba(245, 158, 11, 0.5);
    color: #fbbf24;
}

.btn-submit-exam {
    margin-top: 10px;
    width: 100%;
    padding: 12px;
    font-weight: 700;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

/* ==========================================================================
   REGISTRATION / WELCOME GATE VIEW
   ========================================================================== */
.assessment-gate-card {
    max-width: 580px;
    margin: 40px auto;
    background: rgba(13, 18, 33, 0.8);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 36px 32px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
}

.gate-header {
    text-align: center;
    margin-bottom: 28px;
}

.gate-icon-badge {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: rgba(6, 182, 212, 0.12);
    border: 1px solid rgba(6, 182, 212, 0.3);
    color: var(--color-cyan);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    margin: 0 auto 16px auto;
}

.gate-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.gate-subtitle {
    font-size: 0.92rem;
    color: var(--text-secondary);
}

.gate-exam-summary {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 16px 20px;
    margin-bottom: 24px;
}

.gate-summary-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.88rem;
    padding: 6px 0;
    color: var(--text-secondary);
}

.gate-summary-row strong {
    color: var(--text-primary);
}

.gate-form-group {
    margin-bottom: 18px;
}

.gate-form-label {
    display: block;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.gate-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.gate-input-icon {
    position: absolute;
    left: 14px;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.gate-input {
    width: 100%;
    height: 44px;
    padding: 0 14px 0 42px;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.95rem;
    transition: all var(--transition-fast);
}

.gate-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.2);
}

/* ==========================================================================
   RESULTS & DETAILED FEEDBACK VIEW
   ========================================================================== */
.results-container {
    max-width: 1040px;
    margin: 20px auto;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.results-hero-card {
    background: linear-gradient(145deg, rgba(15, 23, 42, 0.85) 0%, rgba(13, 27, 42, 0.75) 100%);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 36px 32px;
    text-align: center;
    position: relative;
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
}

.results-status-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 18px;
    border-radius: 9999px;
    font-size: 0.95rem;
    font-weight: 800;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    margin-bottom: 16px;
}

.results-status-badge.passed {
    background: rgba(16, 185, 129, 0.2);
    border: 1px solid rgba(16, 185, 129, 0.5);
    color: #34d399;
}

.results-status-badge.failed {
    background: rgba(239, 68, 68, 0.2);
    border: 1px solid rgba(239, 68, 68, 0.5);
    color: #f87171;
}

.results-percentage {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 8px;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.results-subscore {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.results-metrics-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    border-top: 1px solid var(--border-color);
    padding-top: 24px;
}

.result-metric-item {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 14px 10px;
}

.metric-val {
    display: block;
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-primary);
}

.metric-val.correct { color: #10b981; }
.metric-val.incorrect { color: #ef4444; }
.metric-val.unanswered { color: var(--text-muted); }

.metric-lbl {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    margin-top: 4px;
}

.results-actions-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    margin-top: 24px;
    flex-wrap: wrap;
}

/* Solution Review List */
.solution-review-section {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.review-filter-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}

.filter-btn-group {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.filter-pill-btn {
    padding: 6px 14px;
    border-radius: var(--border-radius-full);
    border: 1px solid var(--border-color);
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-secondary);
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-pill-btn:hover {
    color: var(--text-primary);
    border-color: rgba(6, 182, 212, 0.4);
}

.filter-pill-btn.active {
    background: rgba(6, 182, 212, 0.15);
    border-color: var(--primary);
    color: var(--color-cyan);
}

.review-question-card {
    background: rgba(13, 18, 33, 0.7);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 22px 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.review-q-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
}

.review-status-pill {
    padding: 3px 10px;
    border-radius: var(--border-radius-sm);
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
}

.review-status-pill.correct {
    background: rgba(16, 185, 129, 0.15);
    border: 1px solid rgba(16, 185, 129, 0.4);
    color: #34d399;
}

.review-status-pill.incorrect {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.4);
    color: #f87171;
}

.review-status-pill.unanswered {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
}

.review-options-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.review-option-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px 14px;
    border-radius: var(--border-radius-sm);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    font-size: 0.9rem;
    line-height: 1.45;
}

.review-option-item.user-wrong {
    background: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.4);
    color: #fca5a5;
}

.review-option-item.correct-answer {
    background: rgba(16, 185, 129, 0.12);
    border-color: rgba(16, 185, 129, 0.5);
    color: #6ee7b7;
    font-weight: 600;
}

.solution-explanation-box {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 18px;
    border-radius: var(--border-radius-sm);
    background: rgba(6, 182, 212, 0.06);
    border: 1px solid rgba(6, 182, 212, 0.25);
    font-size: 0.88rem;
    line-height: 1.5;
    color: var(--text-secondary);
}

.solution-explanation-box i {
    color: var(--color-cyan);
    font-size: 1rem;
    margin-top: 2px;
    flex-shrink: 0;
}

.solution-explanation-box strong {
    color: var(--text-primary);
}

/* Confirmation Modal */
.assessment-confirm-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(3, 7, 18, 0.8);
    backdrop-filter: blur(8px);
    z-index: 100001;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
}

.assessment-confirm-backdrop.open {
    opacity: 1;
    visibility: visible;
}

.assessment-confirm-card {
    max-width: 440px;
    width: 100%;
    background: #0d1221;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 28px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.8);
    text-align: center;
}

.confirm-icon {
    font-size: 2.2rem;
    color: var(--color-cyan);
    margin-bottom: 12px;
}

.confirm-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.confirm-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 20px;
}

.confirm-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

@media (max-width: 1024px) {
    .exam-grid-layout {
        grid-template-columns: 1fr;
    }

    .navigator-palette-card {
        position: static;
    }

    .exam-title-heading {
        max-width: 240px;
    }

    .results-metrics-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ==========================================================================
   MEMBERS-ONLY BARRIER GATE
   ========================================================================== */
.auth-barrier-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 480px;
    width: 100%;
    padding: 24px;
}

.auth-barrier-card {
    max-width: 520px;
    width: 100%;
    text-align: center;
    padding: 40px 32px;
    background: rgba(13, 18, 33, 0.85);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
}

.auth-barrier-icon {
    width: 68px;
    height: 68px;
    border-radius: 50%;
    background: rgba(6, 182, 212, 0.12);
    border: 1px solid rgba(6, 182, 212, 0.35);
    color: var(--color-cyan);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.85rem;
    margin: 0 auto 20px auto;
}

.auth-barrier-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.auth-barrier-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 24px;
}

.btn-google {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: #ffffff;
    color: #3c4043;
    border: 1px solid #dadce0;
    border-radius: 9999px;
    padding: 10px 24px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
    transition: all var(--transition-fast, 0.2s ease);
}

.btn-google:hover {
    background: #f8f9fa;
    border-color: #c6c9cc;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.15);
    transform: translateY(-1px);
}

/* ==========================================================================
   ASSESSMENT ENVIRONMENT LIGHT THEME OVERRIDES
   ========================================================================== */
[data-theme="light"] .assessment-page {
    background-color: #f8fafc;
    color: #0f172a;
}

[data-theme="light"] .assessment-nav {
    background: rgba(255, 255, 255, 0.95);
    border-bottom: 1px solid #e2e8f0;
    box-shadow: 0 2px 10px rgba(15, 23, 42, 0.04);
}

[data-theme="light"] .assessment-back-link {
    background: #f1f5f9;
    border-color: #cbd5e1;
    color: #334155;
}

[data-theme="light"] .assessment-back-link:hover {
    background: #e2e8f0;
    color: #0284c7;
    border-color: #94a3b8;
}

[data-theme="light"] .exam-title-heading {
    color: #0f172a;
}

[data-theme="light"] .exam-code-tag {
    background: #e0f2fe;
    border-color: #bae6fd;
    color: #0284c7;
}

[data-theme="light"] .btn-header-syllabus {
    background: #f0f9ff;
    border-color: #bae6fd;
    color: #0284c7;
}

[data-theme="light"] .btn-header-syllabus:hover {
    background: #e0f2fe;
    border-color: #7dd3fc;
}

[data-theme="light"] .timer-box {
    background: #ffffff;
    border: 1.5px solid #bae6fd;
    color: #0284c7;
    box-shadow: 0 2px 8px rgba(2, 132, 199, 0.08);
}

[data-theme="light"] .student-nav-pill {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    color: #0f172a;
}

[data-theme="light"] .icon-btn.theme-toggle-btn {
    background: #f1f5f9;
    border: 1px solid #cbd5e1;
    color: #334155;
}

[data-theme="light"] .icon-btn.theme-toggle-btn:hover {
    background: #e2e8f0;
    color: #0284c7;
}

/* Main Active Question Card */
[data-theme="light"] .active-question-card {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.06), 0 2px 6px -1px rgba(15, 23, 42, 0.04);
}

[data-theme="light"] .question-meta-row {
    border-bottom: 1px solid #f1f5f9;
}

[data-theme="light"] .question-index-badge {
    color: #0284c7;
    font-weight: 700;
}

[data-theme="light"] .badge-difficulty.easy {
    background: #ecfdf5;
    border-color: #a7f3d0;
    color: #059669;
}

[data-theme="light"] .badge-difficulty.medium {
    background: #fffbeb;
    border-color: #fde68a;
    color: #d97706;
}

[data-theme="light"] .badge-difficulty.difficult {
    background: #fef2f2;
    border-color: #fecaca;
    color: #dc2626;
}

[data-theme="light"] .badge-session {
    background: #f8fafc;
    border-color: #e2e8f0;
    color: #475569;
}

[data-theme="light"] .question-prompt-text {
    color: #0f172a;
    font-size: 1.18rem;
    font-weight: 600;
    line-height: 1.6;
}

[data-theme="light"] .question-code-block {
    background: #0f172a;
    border: 1px solid #1e293b;
    color: #f8fafc;
}

/* Options Choice Items */
[data-theme="light"] .option-choice-item {
    background: #f8fafc;
    border: 1.5px solid #e2e8f0;
    color: #0f172a;
    box-shadow: 0 1px 3px rgba(15, 23, 42, 0.03);
}

[data-theme="light"] .option-choice-item:hover {
    background: #f0f9ff;
    border-color: #38bdf8;
    transform: translateX(4px);
}

[data-theme="light"] .option-choice-item.selected {
    background: #f0f9ff;
    border-color: #0284c7;
    box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15), 0 4px 12px -2px rgba(2, 132, 199, 0.1);
    transform: translateX(4px);
}

[data-theme="light"] .option-radio-indicator {
    background: #ffffff;
    border: 2px solid #cbd5e1;
    color: #475569;
    font-weight: 800;
}

[data-theme="light"] .option-choice-item.selected .option-radio-indicator {
    background: #0284c7;
    border-color: #0284c7;
    color: #ffffff;
    box-shadow: 0 2px 6px rgba(2, 132, 199, 0.35);
}

[data-theme="light"] .option-choice-text {
    color: #1e293b;
}

[data-theme="light"] .option-choice-item.selected .option-choice-text {
    color: #0369a1;
    font-weight: 600;
}

/* Bottom Question Toolbar */
[data-theme="light"] .question-toolbar {
    border-top: 1px solid #f1f5f9;
}

[data-theme="light"] .btn-flag-review {
    background: #f8fafc;
    border: 1px solid #cbd5e1;
    color: #475569;
    font-weight: 600;
}

[data-theme="light"] .btn-flag-review:hover {
    background: #fffbeb;
    border-color: #fcd34d;
    color: #d97706;
}

[data-theme="light"] .btn-flag-review.active {
    background: #fef3c7;
    border-color: #f59e0b;
    color: #b45309;
    font-weight: 700;
}

[data-theme="light"] .btn-clear-selection {
    color: #64748b;
    font-weight: 600;
}

[data-theme="light"] .btn-clear-selection:hover {
    color: #ef4444;
}

[data-theme="light"] .toolbar-right .btn-secondary {
    background: #f1f5f9;
    border: 1px solid #cbd5e1;
    color: #334155;
    font-weight: 600;
}

[data-theme="light"] .toolbar-right .btn-secondary:hover:not(:disabled) {
    background: #e2e8f0;
    color: #0f172a;
}

/* Right Navigator Palette */
[data-theme="light"] .navigator-palette-card {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.06);
}

[data-theme="light"] .palette-header {
    border-bottom: 1px solid #f1f5f9;
}

[data-theme="light"] .palette-title {
    color: #0f172a;
}

[data-theme="light"] #palette-count-summary {
    color: #0284c7 !important;
}

[data-theme="light"] .palette-legend {
    border-bottom: 1px solid #f1f5f9;
    color: #64748b;
}

[data-theme="light"] .legend-dot.unanswered {
    background: #cbd5e1;
}

[data-theme="light"] .palette-number-btn {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    color: #334155;
    font-weight: 600;
}

[data-theme="light"] .palette-number-btn:hover {
    background: #e0f2fe;
    border-color: #38bdf8;
    color: #0284c7;
    transform: translateY(-2px);
}

[data-theme="light"] .palette-number-btn.current {
    border-color: #0284c7 !important;
    border-width: 2px !important;
    color: #0284c7 !important;
    background: #e0f2fe !important;
    font-weight: 800;
    box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.2);
}

[data-theme="light"] .palette-number-btn.answered {
    background: #ecfdf5;
    border-color: #10b981;
    color: #047857;
    font-weight: 700;
}

[data-theme="light"] .palette-number-btn.flagged {
    background: #fffbeb;
    border-color: #f59e0b;
    color: #b45309;
    font-weight: 700;
}

/* Results & Review */
[data-theme="light"] .results-hero-card {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
}

[data-theme="light"] .metric-card {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
}

[data-theme="light"] .metric-value {
    color: #0f172a;
}

[data-theme="light"] .review-question-card {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    box-shadow: 0 4px 16px rgba(15, 23, 42, 0.04);
}

[data-theme="light"] .review-q-header {
    border-bottom: 1px solid #e2e8f0;
}

[data-theme="light"] .review-opt.opt-correct {
    background: #f0fdf4;
    border-color: #86efac;
    color: #15803d;
}

[data-theme="light"] .review-opt.opt-wrong-picked {
    background: #fef2f2;
    border-color: #fca5a5;
    color: #b91c1c;
}

[data-theme="light"] .review-explanation-box {
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    color: #166534;
}

[data-theme="light"] .review-explanation-box p {
    color: #15803d;
}

/* Modals & Gate Cards */
[data-theme="light"] .assessment-gate-card {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    box-shadow: 0 10px 40px rgba(15, 23, 42, 0.08);
}

[data-theme="light"] .gate-title {
    color: #0f172a;
}

[data-theme="light"] .auth-barrier-card {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    box-shadow: 0 10px 40px rgba(15, 23, 42, 0.08);
}

[data-theme="light"] .auth-barrier-title {
    color: #0f172a;
}

[data-theme="light"] .confirm-modal-window {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    box-shadow: 0 25px 50px rgba(15, 23, 42, 0.15);
}

[data-theme="light"] .confirm-title {
    color: #0f172a;
}