/* quiz-style.css - Premium Modern Quiz Styling for Acutis Theme */

:root {
    --quiz-primary: #3b82f6;
    --quiz-primary-hover: #2563eb;
    --quiz-success: #10b981;
    --quiz-success-bg: #d1fae5;
    --quiz-danger: #ef4444;
    --quiz-danger-bg: #fee2e2;
    --quiz-warning: #f59e0b;
    --quiz-bg: #ffffff;
    --quiz-bg-alt: #f8fafc;
    --quiz-border: #e2e8f0;
    --quiz-text-main: #1e293b;
    --quiz-text-muted: #64748b;
    --quiz-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --quiz-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --quiz-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --quiz-radius: 12px;
    --quiz-radius-sm: 8px;
    --quiz-radius-lg: 16px;
    --quiz-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.ngu-thu-quiz-container {
    max-width: 800px;
    margin: 2rem auto;
    font-family: 'Roboto', sans-serif;
    color: var(--quiz-text-main);
    background: var(--quiz-bg);
    border-radius: var(--quiz-radius-lg);
    box-shadow: var(--quiz-shadow-lg);
    overflow: hidden;
    line-height: 1.6;
}

.ngu-thu-quiz-container *,
.ngu-thu-quiz-container input,
.ngu-thu-quiz-container button,
.ngu-thu-quiz-container textarea {
    box-sizing: border-box;
    font-family: 'Roboto', sans-serif;
}

/* Loading State */
.quiz-loading {
    padding: 4rem 2rem;
    text-align: center;
    color: var(--quiz-text-muted);
}

.quiz-spinner {
    width: 40px;
    height: 40px;
    margin: 0 auto 1rem;
    border: 4px solid var(--quiz-bg-alt);
    border-top-color: var(--quiz-primary);
    border-radius: 50%;
    animation: quiz-spin 1s linear infinite;
}

@keyframes quiz-spin {
    to { transform: rotate(360deg); }
}

.quiz-error {
    color: var(--quiz-danger);
    background: var(--quiz-danger-bg);
    padding: 1rem;
    border-radius: var(--quiz-radius);
    margin-top: 1rem;
}

/* Header & Progress */
.quiz-header {
    background: #93b1b6;
    padding: 1.5rem 2rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

.quiz-progress-bar-container {
    height: 8px;
    background: rgba(255, 255, 255, 0.45);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 1rem;
}

.quiz-progress-fill {
    height: 100%;
    background: var(--quiz-primary);
    width: 0%;
    transition: width 0.5s ease-in-out;
}

.quiz-status {
    display: flex;
    justify-content: flex-end;
}

.quiz-status-badge {
    background: var(--quiz-primary);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 600;
    box-shadow: var(--quiz-shadow-sm);
}

/* Body & Question */
.quiz-body {
    padding: 2rem;
    transition: opacity 0.3s ease;
    background: #b7b7b7;
}

.quiz-question-card {
    margin-bottom: 2rem;
}

.quiz-question-text {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0 0 1.5rem 0;
    color: #ffeb3b;
    line-height: 1.55;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.45);
}

.quiz-question-text strong {
    color: #fff59d;
    margin-right: 0.5rem;
}

/* Hint */
.quiz-hint-wrapper {
    margin-bottom: 1.5rem;
}

.quiz-hint-toggle {
    border: none;
    color: #800020;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: var(--quiz-radius-sm);
    transition: var(--quiz-transition);
    background: rgba(255, 255, 255, 0.65);
}

.quiz-hint-toggle svg {
    stroke: #800020;
}

.quiz-hint-toggle:hover {
    background: rgba(255, 255, 255, 0.85);
    color: #5c0018;
}

.quiz-hint-toggle:hover svg {
    stroke: #5c0018;
}

.quiz-hint-toggle.active {
    background: var(--quiz-warning);
    color: #ffffff;
}

.quiz-hint-toggle.active svg {
    stroke: #ffffff;
}

.quiz-hint-content {
    margin-top: 0.5rem;
    padding: 1rem;
    background: #fffbeb;
    border-left: 4px solid var(--quiz-warning);
    border-radius: 0 var(--quiz-radius-sm) var(--quiz-radius-sm) 0;
    font-size: 0.95rem;
    color: #92400e;
    animation: quiz-fade-in 0.3s ease-out;
}

/* Options */
.quiz-options {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.quiz-option {
    display: flex;
    align-items: center;
    padding: 1rem 1.25rem;
    border: 2px solid var(--quiz-border);
    border-radius: var(--quiz-radius);
    cursor: pointer;
    transition: var(--quiz-transition);
    background: #ffffff;
    position: relative;
    overflow: hidden;
}

.quiz-option:hover:not(.disabled) {
    border-color: var(--quiz-primary);
    background: #ffffff;
    transform: translateY(-2px);
    box-shadow: var(--quiz-shadow);
}

.quiz-option-label {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--quiz-bg-alt);
    border-radius: 50%;
    font-weight: 700;
    color: var(--quiz-text-muted);
    margin-right: 1rem;
    flex-shrink: 0;
    transition: var(--quiz-transition);
}

.quiz-option:hover:not(.disabled) .quiz-option-label {
    background: var(--quiz-primary);
    color: white;
}

.quiz-option-text {
    flex-grow: 1;
    font-size: 1rem;
    font-weight: 500;
}

.quiz-option-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    margin-left: 1rem;
    opacity: 0;
    transform: scale(0.5);
    transition: var(--quiz-transition);
}

/* Option States */
.quiz-option.disabled {
    cursor: default;
    opacity: 0.7;
}

.quiz-option.correct {
    border-color: var(--quiz-success);
    background: var(--quiz-success-bg);
    opacity: 1;
}

.quiz-option.correct .quiz-option-label {
    background: var(--quiz-success);
    color: white;
}

.quiz-option.correct .quiz-option-icon {
    opacity: 1;
    transform: scale(1);
    color: var(--quiz-success);
}

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

.quiz-option.wrong .quiz-option-label {
    background: var(--quiz-danger);
    color: white;
}

.quiz-option.wrong .quiz-option-icon {
    opacity: 1;
    transform: scale(1);
    color: var(--quiz-danger);
}

/* Rationale */
.quiz-rationale {
    margin-top: 2rem;
    padding: 1.5rem;
    background: var(--quiz-bg-alt);
    border-radius: var(--quiz-radius);
    border-left: 4px solid var(--quiz-primary);
}

.quiz-rationale-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    color: var(--quiz-primary);
}

.quiz-rationale-header h4 {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 600;
}

.quiz-rationale-text {
    color: var(--quiz-text-main);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Footer & Buttons */
.quiz-footer {
    padding: 0 2rem 2rem 2rem;
    display: flex;
    justify-content: flex-end;
    background: #b7b7b7;
}

.quiz-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--quiz-radius-sm);
    cursor: pointer;
    transition: var(--quiz-transition);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.quiz-btn-next {
    background: var(--quiz-primary);
    color: white;
    box-shadow: var(--quiz-shadow);
}

.quiz-btn-next:hover {
    background: var(--quiz-primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--quiz-shadow-lg);
}

.quiz-btn-retry {
    background: var(--quiz-bg-alt);
    color: var(--quiz-text-main);
    border: 2px solid var(--quiz-border);
}

.quiz-btn-retry:hover {
    background: var(--quiz-border);
}

/* Result Screen */
.quiz-result {
    padding: 3rem 2rem;
    text-align: center;
}

.quiz-result-inner {
    max-width: 500px;
    margin: 0 auto;
}

.quiz-result-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.quiz-result h2 {
    font-size: 2rem;
    margin: 0 0 1.5rem 0;
}

.quiz-text-success { color: var(--quiz-success); }
.quiz-text-warning { color: var(--quiz-warning); }
.quiz-text-danger { color: var(--quiz-danger); }

.quiz-score-container {
    width: 200px;
    margin: 0 auto 2rem;
}

.quiz-score-circle {
    position: relative;
    width: 100%;
}

.circular-chart {
    display: block;
    margin: 0 auto;
    max-width: 80%;
    max-height: 250px;
}

.circle-bg {
    fill: none;
    stroke: var(--quiz-bg-alt);
    stroke-width: 2.5;
}

.circle {
    fill: none;
    stroke-width: 2.5;
    stroke-linecap: round;
    transition: stroke-dasharray 1s ease-out;
}

.quiz-text-success + .quiz-score-container .circle { stroke: var(--quiz-success); }
.quiz-text-warning + .quiz-score-container .circle { stroke: var(--quiz-warning); }
.quiz-text-danger + .quiz-score-container .circle { stroke: var(--quiz-danger); }

.quiz-score-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.quiz-score-current {
    font-size: 3rem;
    font-weight: 800;
    color: var(--quiz-text-main);
    line-height: 1;
}

.quiz-score-total {
    font-size: 1rem;
    color: var(--quiz-text-muted);
    font-weight: 600;
}

.quiz-result-desc {
    font-size: 1.1rem;
    color: var(--quiz-text-muted);
    margin-bottom: 2rem;
}

.quiz-result-actions {
    display: flex;
    justify-content: center;
}

/* Animations */
.quiz-fade-in {
    animation: quiz-fade-in 0.5s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes quiz-fade-in {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive */
@media (max-width: 640px) {
    .ngu-thu-quiz-container {
        margin: 1rem;
        border-radius: var(--quiz-radius);
    }

    .quiz-header {
        padding: 1rem 1.5rem;
    }

    .quiz-body {
        padding: 1.5rem;
    }

    .quiz-footer {
        padding: 0 1.5rem 1.5rem 1.5rem;
    }

    .quiz-question-text {
        font-size: 1.1rem;
    }

    .quiz-option {
        padding: 0.875rem 1rem;
    }

    .quiz-option-label {
        width: 28px;
        height: 28px;
        font-size: 0.9rem;
    }
    
    .quiz-score-current {
        font-size: 2.5rem;
    }
}

/* Cảnh báo khi chèn shortcode trùng trên cùng một trang */
.acutis-ngu-thu-quiz-warning {
    max-width: 800px;
    margin: 1rem auto;
    padding: 1rem 1.25rem;
    color: #92400e;
    background: #fffbeb;
    border-radius: var(--quiz-radius-sm, 8px);
    border-left: 4px solid var(--quiz-warning, #f59e0b);
    font-size: 0.95rem;
    line-height: 1.5;
}