/* ============================================================
   MATH QUIZ APP - QUIZ PAGE STYLES
   ============================================================ */

/* ------------------------------------------------------------
   1. QUIZ ICON
   ------------------------------------------------------------ */
.quiz-icon {
    width: 64px;
    height: 64px;
    background: var(--color-primary-light);
    border-radius: var(--radius-2xl);
    display: flex;
    align-items: center;
    justify-content: center;
}

.quiz-icon i {
    font-size: 2rem;
    color: var(--color-primary);
}

.quiz-icon-sm {
    width: 48px;
    height: 48px;
    background: var(--color-primary-light);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.quiz-icon-sm i {
    font-size: 1.5rem;
    color: var(--color-primary);
}

/* ------------------------------------------------------------
   2. SETUP PHASE
   ------------------------------------------------------------ */
#phase-setup .card {
    border: 1px solid rgba(11, 94, 215, 0.05);
}

#free-limit-warning {
    font-size: 0.75rem;
}

#cooldown-warning {
    font-size: 0.85rem;
    border-radius: var(--radius-lg);
    background: #fff8e1;
    border: 1px solid #ffc107;
}

/* ------------------------------------------------------------
   3. TUTORIAL / TIPS PHASE
   ------------------------------------------------------------ */
.tutorial-card {
    background: #f8faff;
    transition: all var(--transition-fast);
    padding: 16px 20px !important;
}

.tutorial-card:hover {
    background: #eef3ff;
}

/* Tips content wrapper */
#tips-content {
    animation: fadeIn 0.3s ease;
}

/* Tips Normal */
#tips-normal {
    white-space: normal;
    line-height: 1.9;
    font-size: 0.88rem;
    color: var(--color-gray-700);
}

#tips-normal br {
    display: block;
    content: '';
    margin-bottom: 6px;
}

/* Tips Cepat */
#tips-cepat {
    white-space: normal;
    line-height: 1.9;
    font-size: 0.88rem;
    color: var(--color-gray-700);
}

#tips-cepat br {
    display: block;
    content: '';
    margin-bottom: 6px;
}

/* Tips Contoh */
#tips-contoh {
    white-space: pre-line;
    line-height: 1.9;
    font-size: 0.88rem;
    color: var(--color-gray-700);
    font-family: var(--font-mono);
    background: #f9fafb;
    padding: 12px 16px;
    border-radius: 10px;
}

/* Tips List */
#tips-list {
    list-style: none;
    padding: 0;
    margin: 8px 0 0 0;
}

#tips-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
    padding: 5px 0;
    color: var(--color-gray-600);
    font-size: 0.84rem;
    line-height: 1.7;
}

#tips-list li::before {
    content: '▸';
    color: var(--color-primary);
    flex-shrink: 0;
    margin-top: 0.15rem;
    font-weight: 700;
}

/* Tips Empty State */
#tips-empty {
    color: #bbb;
}

/* Tips Section Badges */
.tutorial-card .badge {
    font-size: 0.7rem;
    font-weight: 700;
    padding: 5px 12px;
    border-radius: 20px;
    letter-spacing: 0.5px;
    margin-bottom: 10px;
    display: inline-block;
}

/* ------------------------------------------------------------
   4. QUIZ PHASE
   ------------------------------------------------------------ */
#quiz-progress {
    font-size: 0.8rem;
    letter-spacing: 0.3px;
}

#quiz-timer {
    font-size: 0.85rem;
    font-variant-numeric: tabular-nums;
}

#quiz-timer.warning {
    color: var(--color-danger) !important;
    animation: pulse 1s infinite;
}

#quiz-type-label {
    letter-spacing: 1px;
    font-size: 0.7rem;
}

#quiz-question {
    font-size: 2rem;
    line-height: 1.4;
    word-break: break-word;
}

/* ------------------------------------------------------------
   5. OPTION BUTTONS (MULTIPLE CHOICE)
   ------------------------------------------------------------ */
.option-btn {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
    padding: 1rem 1.25rem;
    text-align: left;
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    background: var(--color-white);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
}

.option-btn:hover {
    border-color: var(--color-primary-light);
    background: #f0f6ff;
    transform: translateY(-1px);
}

.option-btn.selected {
    background: var(--color-primary-light);
    border-color: var(--color-primary);
    color: var(--color-primary);
    font-weight: 700;
}

.option-btn.correct-answer {
    background: var(--color-success-bg);
    border-color: var(--color-success-border);
    color: var(--color-success);
}

.option-btn.wrong-answer {
    background: var(--color-danger-bg);
    border-color: var(--color-danger-border);
    color: var(--color-danger);
}

.option-btn:disabled {
    pointer-events: none;
    opacity: 0.8;
}

.option-letter {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.85rem;
    background: var(--color-primary-light);
    color: var(--color-primary);
    flex-shrink: 0;
}

.option-text {
    font-size: 1rem;
    line-height: 1.5;
}

/* ------------------------------------------------------------
   6. ANSWER INPUT (NUMERIC)
   ------------------------------------------------------------ */
#quiz-answer {
    font-size: 1.5rem;
    font-weight: 600;
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    padding: 1rem 1.5rem;
    text-align: center;
    transition: all var(--transition-fast);
}

#quiz-answer:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(11, 94, 215, 0.1);
}

/* ------------------------------------------------------------
   7. FEEDBACK AREA
   ------------------------------------------------------------ */
#feedback-area {
    animation: fadeIn 0.2s ease;
}

#feedback-message.feedback-correct {
    background: var(--color-success-bg);
    color: var(--color-success);
    border: 2px solid var(--color-success-border);
}

#feedback-message.feedback-wrong {
    background: var(--color-danger-bg);
    color: var(--color-danger);
    border: 2px solid var(--color-danger-border);
}

#feedback-message.feedback-warning {
    background: var(--color-warning-bg);
    color: var(--color-warning);
    border: 2px solid var(--color-warning-border);
}

/* ------------------------------------------------------------
   8. PROGRESS BAR
   ------------------------------------------------------------ */
.progress {
    background: var(--color-gray-200);
    border-radius: var(--radius-full);
}

.progress-bar {
    background: var(--color-primary);
    transition: width 0.4s ease;
    border-radius: var(--radius-full);
}

/* ------------------------------------------------------------
   9. NEXT BUTTON
   ------------------------------------------------------------ */
#btn-next {
    transition: all var(--transition-fast);
}

#btn-next:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(11, 94, 215, 0.2);
}

#btn-next:active {
    transform: translateY(0);
}

/* ------------------------------------------------------------
   10. SWITCH TOGGLE (TIMER)
   ------------------------------------------------------------ */
.switch-track {
    width: 48px;
    height: 26px;
    border-radius: 13px;
    cursor: pointer;
    transition: background var(--transition-base);
    position: relative;
    display: inline-block;
}

.switch-track.on {
    background: var(--color-primary);
}

.switch-track.off {
    background: #ccc;
}

.switch-thumb {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--color-white);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    transition: transform var(--transition-base);
    position: absolute;
    top: 2px;
}

.switch-track.on .switch-thumb {
    transform: translateX(22px);
}

.switch-track.off .switch-thumb {
    transform: translateX(2px);
}

.switch-track.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ------------------------------------------------------------
   11. SQUARE ROOT WITH OVERLINE
   ------------------------------------------------------------ */
.sqrt-display {
    display: inline-flex;
    align-items: flex-end;
    vertical-align: middle;
}

.sqrt-symbol {
    font-size: 1.5rem;
    font-weight: 400;
    line-height: 0.9;
    margin-right: 1px;
    color: #333;
}

.sqrt-overline {
    border-top: 2px solid #333;
    padding: 3px 8px 0 8px;
    margin-left: -2px;
    line-height: 1.4;
}

/* ------------------------------------------------------------
   12. RESPONSIVE ADJUSTMENTS
   ------------------------------------------------------------ */
@media (max-width: 768px) {
    .quiz-icon { width: 52px; height: 52px; }
    .quiz-icon i { font-size: 1.5rem; }
    #quiz-question { font-size: 1.5rem; }
    .option-btn { padding: 0.75rem 1rem; }
    .option-letter { width: 30px; height: 30px; font-size: 0.75rem; }
    #quiz-answer { font-size: 1.25rem; padding: 0.75rem 1rem; }
    .tutorial-card { padding: 12px 14px !important; }
    #tips-normal, #tips-cepat, #tips-contoh { font-size: 0.82rem; }
    #tips-list li { font-size: 0.78rem; }
    .sqrt-symbol { font-size: 1.2rem; }
    .sqrt-overline { padding: 2px 6px 0 6px; }
}

@media (max-width: 480px) {
    .card-body { padding: 1rem !important; }
    #quiz-question { font-size: 1.35rem; }
    .option-text { font-size: 0.9rem; }
    #tips-normal, #tips-cepat, #tips-contoh { font-size: 0.78rem; }
}

/* ------------------------------------------------------------
   13. ANIMATION OVERRIDES
   ------------------------------------------------------------ */
.pulse {
    animation: pulse 0.6s ease;
}

.whitespace-pre-line {
    white-space: pre-line;
}

/* ------------------------------------------------------------
   14. PREMIUM LIMIT BADGE
   ------------------------------------------------------------ */
.limit-badge {
    display: inline-flex;
    align-items: center;
    background: linear-gradient(135deg, #fff8e1, #fff3cd);
    border: 1px solid #ffc107;
    border-radius: 20px;
    padding: 0.35rem 0.85rem;
    font-size: 0.72rem;
    color: #856404;
    font-weight: 500;
}

.limit-badge i {
    color: #f57c00;
}

.limit-badge strong {
    color: #e65100;
}

.limit-badge a {
    color: #0b5ed7;
    font-weight: 600;
    text-decoration: none;
    font-size: 0.7rem;
}

.limit-badge a:hover {
    text-decoration: underline;
}

.limit-badge-timer {
    background: linear-gradient(135deg, #e8f0fe, #d4e4ff);
    border-color: #0b5ed7;
    color: #0b5ed7;
}

.limit-badge-timer i {
    color: #f57c00;
}

/* ------------------------------------------------------------
   15. MATRIX DISPLAY STYLES
   ------------------------------------------------------------ */
.matrix-container {
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    gap: 0;
    vertical-align: middle;
}

.matrix-bracket {
    font-size: 2rem;
    font-weight: 300;
    color: #0b5ed7;
    line-height: 1;
    user-select: none;
    margin: 0 1px;
    flex-shrink: 0;
}

.matrix-content {
    display: grid !important;
    gap: 4px 10px;
    padding: 4px 2px;
}

.matrix-content.cols-2 { grid-template-columns: auto auto !important; }
.matrix-content.cols-3 { grid-template-columns: auto auto auto !important; }
.matrix-content.cols-1 { grid-template-columns: auto !important; }

.matrix-cell {
    text-align: center;
    padding: 2px 6px;
    font-size: 1rem;
    font-weight: 500;
    color: #1f2937;
    min-width: 28px;
    white-space: nowrap;
    line-height: 1.3;
}

/* Matrix di dalam opsi jawaban */
.option-btn .matrix-container,
.option-btn .matrix-container * {
    box-sizing: border-box;
}

.option-btn .matrix-container {
    display: inline-flex !important;
    pointer-events: none;
}

.option-btn .matrix-bracket {
    font-size: 1.3rem !important;
    flex-shrink: 0 !important;
}

.option-btn .matrix-content {
    display: grid !important;
    gap: 2px 6px !important;
    padding: 2px 1px !important;
}

.option-btn .matrix-content.cols-2 {
    grid-template-columns: auto auto !important;
}

.option-btn .matrix-content.cols-1 {
    grid-template-columns: auto !important;
}

.option-btn .matrix-cell {
    display: block !important;
    text-align: center !important;
    font-size: 0.85rem !important;
    padding: 1px 4px !important;
    min-width: 20px !important;
    width: auto !important;
}

/* ------------------------------------------------------------
   16. LIMIT EXPRESSION STYLES
   ------------------------------------------------------------ */
.limit-expression {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 1.2rem;
    margin: 1rem 0;
}

.limit-symbol {
    font-weight: 700;
    font-style: italic;
    color: #0b5ed7;
}

.limit-arrow {
    font-size: 0.85rem;
    color: #6c757d;
    font-style: normal;
}

.limit-expression .fraction {
    display: inline-flex;
    flex-direction: column;
    vertical-align: middle;
    text-align: center;
    line-height: 1;
}

.limit-expression .fraction .numerator {
    display: block;
    border-bottom: 2px solid #333;
    padding: 0 0.4em 0.1em;
    line-height: 1.3;
}

.limit-expression .fraction .denominator {
    display: block;
    padding: 0.1em 0.4em 0;
    line-height: 1.3;
}

/* ------------------------------------------------------------
   17. SEARCHABLE SELECT DROPDOWN
   ------------------------------------------------------------ */
.searchable-select-wrapper {
    position: relative;
}

.searchable-select-btn {
    cursor: pointer;
    background: #fff !important;
    padding-right: 2rem !important;
}

.searchable-select-btn:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(11, 94, 215, 0.1);
}

.searchable-select-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 12px;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.1);
    z-index: 100;
    max-height: 320px;
    overflow-y: auto;
    margin-top: 4px;
}

.searchable-select-dropdown.show {
    display: block;
}

.searchable-select-options {
    max-height: 250px;
    overflow-y: auto;
}

.searchable-select-option {
    display: block;
    width: 100%;
    padding: 10px 16px;
    text-align: left;
    border: none;
    background: #fff;
    cursor: pointer;
    font-size: 0.85rem;
    color: var(--color-gray-700);
    transition: background 0.15s;
    border-bottom: 1px solid #f5f5f5;
}

.searchable-select-option:hover {
    background: #f0f6ff;
    color: var(--color-primary);
}

.searchable-select-option.selected {
    background: var(--color-primary-light);
    color: var(--color-primary);
    font-weight: 600;
}

.searchable-select-option:last-child {
    border-bottom: none;
}

.searchable-select-option.d-none {
    display: none;
}

#quiz-type-search,
#tips-type-search {
    border-radius: 8px;
    border: 1px solid #e0e0e0;
    font-size: 0.82rem;
    padding: 0.5rem 0.75rem;
}

#quiz-type-search:focus,
#tips-type-search:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(11, 94, 215, 0.08);
    outline: none;
}

@media (max-width: 768px) {
    .searchable-select-option {
        padding: 12px 16px;
        font-size: 0.9rem;
    }
}