/* ========== VARIABILE TEMA ========== */
:root {
    --bg-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --bg-card: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --card-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.02);
    --input-bg: #ffffff;
    --input-border: #cbd5e1;
    --input-text: #1e293b;
    --input-focus: #667eea;
    --btn-primary: linear-gradient(135deg, #667eea, #764ba2);
    --btn-danger: linear-gradient(135deg, #ef4444, #dc2626);
    --btn-success: linear-gradient(135deg, #10b981, #059669);
    --btn-warning: linear-gradient(135deg, #f59e0b, #d97706);
    --code-bg: #f1f5f9;
    --success: #10b981;
    --error: #ef4444;
    --warning: #f59e0b;
    --info: #3b82f6;
    --option-bg: #f8fafc;
}

[data-theme="dark"] {
    --bg-primary: linear-gradient(135deg, #1e1b4b 0%, #312e81 100%);
    --bg-card: #1e293b;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --border-color: #334155;
    --input-bg: #334155;
    --input-border: #475569;
    --input-text: #f1f5f9;
    --input-focus: #818cf8;
    --code-bg: #0f172a;
    --option-bg: #334155;
}

[data-theme="ocean"] {
    --bg-primary: linear-gradient(135deg, #0ea5e9 0%, #06b6d4 100%);
    --bg-card: #ffffff;
    --text-primary: #0c4a6e;
    --text-secondary: #155e75;
    --input-bg: #ffffff;
    --input-border: #cbd5e1;
    --input-text: #0c4a6e;
    --input-focus: #0ea5e9;
    --code-bg: #ecfeff;
    --option-bg: #e0f2fe;
}

[data-theme="sunset"] {
    --bg-primary: linear-gradient(135deg, #f97316 0%, #ef4444 100%);
    --bg-card: #ffffff;
    --text-primary: #7c2d12;
    --text-secondary: #9a3412;
    --input-bg: #ffffff;
    --input-border: #cbd5e1;
    --input-text: #7c2d12;
    --input-focus: #f97316;
    --code-bg: #ffedd5;
    --option-bg: #fed7aa;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    padding: 1rem;
}

/* Theme Switcher */
.theme-switcher {
    position: fixed;
    bottom: 1rem;
    right: 1rem;
    display: flex;
    gap: 0.5rem;
    z-index: 1000;
    background: var(--bg-card);
    padding: 0.5rem;
    border-radius: 3rem;
    box-shadow: var(--card-shadow);
}

.theme-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    cursor: pointer;
    font-size: 1.2rem;
    background: transparent;
    transition: transform 0.2s;
}

.theme-btn:hover {
    transform: scale(1.1);
}

.container {
    max-width: 900px;
    width: 100%;
    margin: 0 auto;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 2rem;
    padding: 1rem;
}

.header h1 {
    font-size: 2.2rem;
    font-weight: 800;
    background: white;
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
    text-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.header .subhead {
    color: rgba(255,255,255,0.9);
    margin-top: 0.5rem;
}

/* Cards */
.form-card, .quiz-builder {
    background: var(--bg-card);
    border-radius: 1.5rem;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--card-shadow);
}

/* ========== MODERN INPUT STYLES ========== */
.input-field {
    margin-bottom: 1.2rem;
}

.input-field label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-size: 0.9rem;
}

/* Stilul principal pentru toate inputurile */
.input-field input,
.input-field select,
.input-field textarea,
.text-answer {
    width: 100%;
    padding: 0.9rem 1.2rem;
    border: 2px solid var(--input-border);
    border-radius: 1rem;
    background: var(--input-bg);
    color: var(--input-text);
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.2s ease;
}

/* Efect la focus */
.input-field input:focus,
.input-field select:focus,
.input-field textarea:focus,
.text-answer:focus {
    outline: none;
    border-color: var(--input-focus);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.15);
}

/* Placeholder */
.input-field input::placeholder,
.text-answer::placeholder {
    color: var(--text-secondary);
    opacity: 0.6;
}

/* Buttons */
.btn-primary {
    background: var(--btn-primary);
    color: white;
    border: none;
    padding: 0.85rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 2rem;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px -5px rgba(0,0,0,0.2);
}

.btn-secondary {
    background: var(--btn-success);
    color: white;
    border: none;
    padding: 0.5rem 1.2rem;
    border-radius: 2rem;
    cursor: pointer;
    font-size: 0.8rem;
    font-weight: 500;
}

.btn-danger {
    background: var(--btn-danger);
    color: white;
    border: none;
    padding: 0.25rem 0.7rem;
    border-radius: 2rem;
    cursor: pointer;
    font-size: 0.7rem;
}

/* Question Card */
.question-card {
    background: var(--code-bg);
    border-radius: 1rem;
    padding: 1rem;
    margin-bottom: 1rem;
}

/* Option Row */
.option-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    background: var(--option-bg);
    padding: 0.4rem 0.4rem 0.4rem 1rem;
    border-radius: 2rem;
    border: 1px solid var(--border-color);
}

.option-row input {
    flex: 1;
    background: transparent;
    border: none;
    padding: 0.5rem;
    color: var(--input-text);
    font-size: 0.9rem;
}

.option-row input:focus {
    outline: none;
}

.correct-badge {
    cursor: pointer;
    padding: 0.25rem 0.7rem;
    border-radius: 2rem;
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    font-size: 0.7rem;
    white-space: nowrap;
}

.correct-badge.selected {
    background: var(--success);
    color: white;
}

.correct-badge.multi-selected {
    background: var(--info);
    color: white;
}

.remove-option {
    background: var(--btn-danger);
    color: white;
    border: none;
    border-radius: 2rem;
    width: 28px;
    height: 28px;
    cursor: pointer;
}

.selected-display {
    font-size: 0.8rem;
    color: var(--success);
    margin-top: 0.5rem;
    padding: 0.3rem;
}

/* Answer Buttons */
.solve-question {
    background: var(--bg-card);
    border-radius: 1rem;
    padding: 1.2rem;
    margin-bottom: 1rem;
}

.question-text {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.answer-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.answer-btn {
    background: var(--option-bg);
    border: 2px solid var(--border-color);
    border-radius: 2rem;
    padding: 0.6rem 1.2rem;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
}

.answer-btn:hover {
    background: var(--info);
    color: white;
}

.answer-btn.selected {
    background: var(--info);
    color: white;
}

/* Score Card */
.score-card {
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    color: white;
    padding: 1.5rem;
    border-radius: 1.5rem;
    text-align: center;
    margin-bottom: 1.5rem;
}

.score-number {
    font-size: 3rem;
    font-weight: 800;
}

/* Leaderboard */
.leaderboard {
    background: var(--bg-card);
    border-radius: 1rem;
    padding: 1rem;
    margin-top: 1rem;
}

.leaderboard-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.6rem;
    margin-bottom: 0.3rem;
    border-radius: 0.8rem;
}

.rank-1 {
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    color: white;
}

.rank-2 {
    background: linear-gradient(135deg, #94a3b8, #64748b);
    color: white;
}

.rank-3 {
    background: linear-gradient(135deg, #cd7f32, #b45309);
    color: white;
}

/* Result Card */
.result-card {
    background: var(--bg-card);
    border-radius: 1rem;
    padding: 1rem;
    margin-bottom: 1rem;
}

.result-correct {
    border-left: 4px solid var(--success);
}

.result-wrong {
    border-left: 4px solid var(--error);
}

/* Share Card */
.share-card {
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
    padding: 1.2rem;
    border-radius: 1rem;
    text-align: center;
    margin-bottom: 1.5rem;
}

.quiz-link {
    background: white;
    color: #1e293b;
    padding: 0.5rem;
    border-radius: 2rem;
    font-family: monospace;
    word-break: break-all;
    margin-top: 0.5rem;
}

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
    margin-bottom: 1rem;
}

.stat-card {
    background: var(--bg-card);
    border-radius: 1rem;
    padding: 0.8rem;
    text-align: center;
}

.stat-number {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--info);
}

/* Progress */
.question-progress {
    background: var(--code-bg);
    border-radius: 0.8rem;
    padding: 0.6rem;
    margin-bottom: 0.6rem;
}

.progress-bar {
    height: 6px;
    background: var(--border-color);
    border-radius: 3px;
    overflow: hidden;
    margin-top: 0.3rem;
}

.progress-fill {
    height: 100%;
    background: var(--info);
    transition: width 0.3s;
}

/* Submission */
.submission-card {
    background: var(--bg-card);
    border-radius: 1rem;
    padding: 0.8rem;
    margin-bottom: 0.8rem;
}

.submission-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
    flex-wrap: wrap;
    gap: 0.3rem;
}

.answer-detail {
    margin-top: 0.4rem;
    padding: 0.4rem;
    background: var(--code-bg);
    border-radius: 0.5rem;
    font-size: 0.85rem;
}

.correct-answer {
    color: var(--success);
}

.wrong-answer {
    color: var(--error);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 2rem;
    background: var(--bg-card);
    border-radius: 1rem;
}

/* Error */
.error-message {
    background: rgba(239, 68, 68, 0.9);
    color: white;
    padding: 0.7rem;
    border-radius: 1rem;
    margin-bottom: 1rem;
}

/* Footer */
.footer {
    text-align: center;
    font-size: 0.7rem;
    color: rgba(255,255,255,0.7);
    margin-top: 1.5rem;
    padding-top: 1rem;
}

.back-link {
    color: white;
    text-decoration: none;
}

/* Responsive */
@media (max-width: 768px) {
    .answer-buttons {
        flex-direction: column;
    }
    
    .header h1 {
        font-size: 1.6rem;
    }
    
    .option-row {
        flex-wrap: wrap;
    }
}

/* Stiluri speciale pentru câmpurile de răspuns corect */
.single-answer-field input,
.multiple-answer-field input,
.text-answer-field input {
    width: 100%;
    padding: 0.9rem 1.2rem;
    border: 2px solid var(--input-border);
    border-radius: 1rem;
    background: var(--input-bg);
    color: var(--input-text);
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.2s ease;
}

.single-answer-field input:focus,
.multiple-answer-field input:focus,
.text-answer-field input:focus {
    outline: none;
    border-color: var(--input-focus);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.15);
}

.single-answer-field label,
.multiple-answer-field label,
.text-answer-field label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-size: 0.9rem;
}