/* Quiz Verification Styles - Optimized Version */

:root {
    /* Color Palette */
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --text-primary: #ffffff;
    --text-secondary: #f5f5f5;
    --text-muted: #a0a0a0;
    
    /* Glass Effect */
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --shadow-primary: rgba(0, 0, 0, 0.3);
    
    /* Status Colors */
    --success: #00ff80;
    --error: #ff0080;
    --warning: #ffa500;
    --info: #0080ff;
    --near-miss: #ffc107;
    
    /* Layout */
    --border-radius: 16px;
    --border-width: 1px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset and Base Styles */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Background Animation */
.background-gradient {
    position: fixed;
    inset: 0;
    background: linear-gradient(45deg,
        var(--error) 0%,
        var(--info) 25%,
        var(--success) 50%,
        var(--error) 75%,
        var(--info) 100%);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
    opacity: 0.1;
    z-index: -1;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

/* Layout Components */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Card System */
.card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: var(--border-width) solid var(--glass-border);
    border-radius: var(--border-radius);
    box-shadow: 
        0 8px 32px var(--shadow-primary),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    padding: 2rem;
    margin-bottom: 1.5rem;
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-2px);
    box-shadow:
        0 12px 40px rgba(0, 0, 0, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.main-card {
    width: 100%;
    max-width: 900px;
    text-align: center;
}

/* Typography */
.title {
    font-size: clamp(2rem, 5vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 2rem;
    background: linear-gradient(135deg, var(--text-primary), var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 30px rgba(255, 255, 255, 0.1);
}

h2 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

h3 {
    font-size: 1.3rem;
    margin-bottom: 0.8rem;
    color: var(--text-secondary);
}

/* Loading State */
.loading-state {
    text-align: center;
    padding: 3rem;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid rgba(255, 255, 255, 0.1);
    border-left: 4px solid var(--info);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

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

/* Score Display */
.score-card {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius);
    border: var(--border-width) solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.score-circle {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    font-weight: 700;
    border: 4px solid;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.score-circle::before {
    content: '';
    position: absolute;
    inset: -50%;
    background: conic-gradient(transparent, rgba(255, 255, 255, 0.1), transparent);
    animation: rotate 3s linear infinite;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.score-circle:hover::before {
    opacity: 1;
}

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

/* Score Circle Variants */
.score-circle.excellent {
    border-color: var(--success);
    background: radial-gradient(circle, rgba(0, 255, 128, 0.1), rgba(0, 255, 128, 0.05));
    color: var(--success);
    box-shadow: 0 0 20px rgba(0, 255, 128, 0.3);
}

.score-circle.very-good {
    border-color: #40e0d0;
    background: radial-gradient(circle, rgba(64, 224, 208, 0.1), rgba(64, 224, 208, 0.05));
    color: #40e0d0;
    box-shadow: 0 0 20px rgba(64, 224, 208, 0.3);
}

.score-circle.good {
    border-color: var(--info);
    background: radial-gradient(circle, rgba(0, 128, 255, 0.1), rgba(0, 128, 255, 0.05));
    color: var(--info);
    box-shadow: 0 0 20px rgba(0, 128, 255, 0.3);
}

.score-circle.satisfactory {
    border-color: var(--warning);
    background: radial-gradient(circle, rgba(255, 165, 0, 0.1), rgba(255, 165, 0, 0.05));
    color: var(--warning);
    box-shadow: 0 0 20px rgba(255, 165, 0, 0.3);
}

.score-circle.needs-improvement {
    border-color: var(--error);
    background: radial-gradient(circle, rgba(255, 0, 128, 0.1), rgba(255, 0, 128, 0.05));
    color: var(--error);
    box-shadow: 0 0 20px rgba(255, 0, 128, 0.3);
}

.score-details h2 {
    margin-bottom: 0.5rem;
}

.score-details p {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-muted);
}

/* Question Results */
.questions-list {
    margin-bottom: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.question-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(15px);
    border: var(--border-width) solid;
    border-radius: var(--border-radius);
    padding: 1.5rem;
    text-align: left;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.question-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.question-card:hover::before {
    opacity: 1;
}

/* Question Card Variants */
.question-card.correct {
    border-color: rgba(0, 255, 128, 0.3);
    background: linear-gradient(135deg, rgba(0, 255, 128, 0.05), rgba(0, 255, 128, 0.02));
}

.question-card.incorrect {
    border-color: rgba(255, 0, 128, 0.3);
    background: linear-gradient(135deg, rgba(255, 0, 128, 0.05), rgba(255, 0, 128, 0.02));
}

.question-card.partial {
    border-color: rgba(255, 165, 0, 0.3);
    background: linear-gradient(135deg, rgba(255, 165, 0, 0.05), rgba(255, 165, 0, 0.02));
}

.question-card.near-miss {
    border-color: rgba(255, 193, 7, 0.6);
    background: linear-gradient(135deg, rgba(255, 193, 7, 0.08), rgba(255, 193, 7, 0.03));
    box-shadow: 0 0 15px rgba(255, 193, 7, 0.2);
}

.question-card.near-miss::before {
    background: linear-gradient(90deg, transparent, rgba(255, 193, 7, 0.4), transparent);
}

/* Question Header */
.question-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.question-number {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-weight: 600;
    border: var(--border-width) solid var(--glass-border);
    font-size: 0.9rem;
}

.question-id {
    background: linear-gradient(135deg, var(--info), #0066cc);
    color: white;
    padding: 0.2rem 0.6rem;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
}

.question-status {
    font-size: 1.2rem;
    font-weight: bold;
    padding: 0.25rem;
    border-radius: 50%;
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.status-correct {
    color: var(--success);
    background: rgba(0, 255, 128, 0.1);
}

.status-incorrect {
    color: var(--error);
    background: rgba(255, 0, 128, 0.1);
}

.status-partial {
    color: var(--warning);
    background: rgba(255, 165, 0, 0.1);
}

.question-card.near-miss .question-status {
    background: rgba(255, 193, 7, 0.2);
    color: var(--near-miss);
}

.question-points {
    margin-left: auto;
    font-weight: 600;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Question Content */
.question-text {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.5;
    font-size: 1.1rem;
}

.answer-comparison {
    margin-bottom: 1rem;
}

.user-answer,
.correct-answers {
    margin-bottom: 1rem;
    padding: 1rem;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.02);
}

.user-answer strong,
.correct-answers strong {
    color: var(--text-primary);
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.correct-answer {
    color: var(--success);
    font-weight: 500;
    font-size: 1.1rem;
}

.incorrect-answer {
    color: var(--error);
    font-weight: 500;
    font-size: 1.1rem;
}

.partial-answer {
    color: var(--warning);
    font-weight: 500;
    font-size: 1.1rem;
}

.correct-answers ul {
    list-style: none;
    padding-left: 0;
    margin-top: 0.5rem;
}

.correct-answers li {
    color: var(--success);
    padding: 0.3rem 0;
    position: relative;
    padding-left: 1.5rem;
    font-weight: 500;
}

.correct-answers li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--success);
    font-weight: bold;
}

.question-footer {
    display: flex;
    justify-content: flex-end;
    margin-top: 1rem;
}

.category-tag {
    background: linear-gradient(135deg, var(--info), #0066cc);
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

/* Suggestion and Partial Score Boxes */
.suggestion-box,
.partial-score-box {
    margin: 1rem 0;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    border: 1px solid;
}

.suggestion-box {
    background: rgba(255, 193, 7, 0.1);
    border-color: rgba(255, 193, 7, 0.3);
    border-left: 4px solid var(--near-miss);
}

.partial-score-box {
    background: rgba(255, 165, 0, 0.1);
    border-color: rgba(255, 165, 0, 0.3);
    border-left: 4px solid var(--warning);
}

.suggestion-header,
.partial-score-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-primary);
}

.suggestion-icon,
.partial-score-icon {
    font-size: 1rem;
}

.suggested-answer {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--near-miss);
    background: rgba(255, 193, 7, 0.15);
    padding: 0.4rem 0.6rem;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
}

.partial-score-details {
    font-size: 1rem;
    font-weight: 600;
    color: var(--warning);
    background: rgba(255, 165, 0, 0.15);
    padding: 0.4rem 0.6rem;
    border-radius: 4px;
}

/* Buttons */
.action-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 2rem;
}

.btn {
    padding: 0.75rem 2rem;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    backdrop-filter: blur(10px);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    margin-top: 50px;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transition: all 0.3s ease;
    transform: translate(-50%, -50%);
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--info), #0066cc);
    color: white;
    border: var(--border-width) solid rgba(0, 128, 255, 0.3);
    box-shadow: 0 4px 15px rgba(0, 128, 255, 0.2);
}

.btn-secondary {
    background: var(--glass-bg);
    color: var(--text-primary);
    border: var(--border-width) solid var(--glass-border);
    box-shadow: 0 4px 15px var(--shadow-primary);
}

.btn:hover {
    transform: translateY(-2px);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #0099ff, #0080cc);
    box-shadow: 0 8px 25px rgba(0, 128, 255, 0.3);
}

/* Error State */
.error-state {
    text-align: center;
    padding: 3rem;
    color: var(--error);
}

.error-state h2 {
    color: var(--error);
    margin-bottom: 1rem;
}

/* Focus States */
.btn:focus,
button:focus {
    outline: 2px solid var(--info);
    outline-offset: 2px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    .card {
        padding: 1.5rem;
    }

    .score-card {
        flex-direction: column;
        gap: 1rem;
        padding: 1.5rem;
    }

    .score-circle {
        width: 100px;
        height: 100px;
    }

    .question-header {
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    .question-points {
        margin-left: 0;
        order: -1;
        flex-basis: 100%;
        text-align: right;
    }

    .action-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 300px;
    }
}

@media (max-width: 480px) {
    .question-card {
        padding: 1rem;
    }

    .score-circle {
        width: 80px;
        height: 80px;
        font-size: 1.4rem;
    }

    .question-text {
        font-size: 1rem;
    }

    .suggestion-box,
    .partial-score-box {
        padding: 0.5rem 0.75rem;
    }

    .suggested-answer {
        font-size: 1rem;
    }
}

/* Accessibility and Performance */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .background-gradient {
        animation: none;
    }

    .score-circle::before {
        animation: none;
    }
}

@media (prefers-contrast: high) {
    :root {
        --glass-bg: rgba(255, 255, 255, 0.2);
        --glass-border: rgba(255, 255, 255, 0.4);
        --text-muted: #cccccc;
    }
}

@media print {
    .background-gradient {
        display: none;
    }

    .card {
        box-shadow: none;
        border: 1px solid #333;
    }

    .action-buttons {
        display: none;
    }

    .question-card {
        page-break-inside: avoid;
    }
}