:root {
    --bg-main: #0B0F19;
    --bg-card: #151C2C;
    --bg-card-hover: #1E293B;
    --border-color: #2D3748;
    --primary: #3B82F6;
    --primary-hover: #2563EB;
    --accent: #8B5CF6;
    --success: #10B981;
    --danger: #EF4444;
    --warning: #F59E0B;
    --text-main: #F8FAFC;
    --text-muted: #94A3B8;
    --radius: 16px;
    --shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
    min-height: 100vh;
    padding: 2rem 1rem;
    line-height: 1.5;
}

.app-container {
    max-width: 1200px;
    margin: 0 auto;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 1.75rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
}

.logo-box {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    font-size: 1.75rem;
}

.logo-title {
    font-family: 'Outfit', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
}

.logo-title .highlight {
    color: var(--primary);
}

.badge {
    font-size: 0.75rem;
    padding: 0.25rem 0.6rem;
    background: rgba(59, 130, 246, 0.15);
    color: var(--primary);
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: 20px;
    vertical-align: middle;
    margin-left: 0.5rem;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.dot.green {
    background-color: var(--success);
    box-shadow: 0 0 10px var(--success);
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
}

h2 {
    font-family: 'Outfit', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.subtitle {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

@media (max-width: 768px) {
    .form-grid {
        grid-template-columns: 1fr;
    }
}

.drop-zone {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius);
    padding: 2.5rem 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
    background: rgba(255, 255, 255, 0.02);
}

.drop-zone:hover, .drop-zone.active {
    border-color: var(--primary);
    background: rgba(59, 130, 246, 0.05);
}

.drop-icon {
    font-size: 2.5rem;
    margin-bottom: 0.75rem;
}

.drop-title {
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

.drop-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.form-actions {
    grid-column: 1 / -1;
    display: flex;
    justify-content: flex-end;
    margin-top: 1rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 12px;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.6);
}

.hidden {
    display: none;
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 1.5rem;
}

.dni-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.05);
    padding: 0.4rem 0.8rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    font-weight: 600;
    color: var(--accent);
    margin-top: 0.5rem;
}

.score-display {
    text-align: right;
}

.score-num {
    font-family: 'Outfit', sans-serif;
    font-size: 3rem;
    font-weight: 800;
    color: var(--success);
    display: block;
    line-height: 1;
}

.score-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.stat-box {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.25rem;
    text-align: center;
}

.stat-num {
    font-family: 'Outfit', sans-serif;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.stat-box.green .stat-num { color: var(--success); }
.stat-box.red .stat-num { color: var(--danger); }
.stat-box.gray .stat-num { color: var(--text-muted); }
.stat-box.purple .stat-num { color: var(--accent); }

.stat-title {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.image-preview-box {
    margin-bottom: 2rem;
}

.image-preview-box h3 {
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.img-wrapper {
    background: #000;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    max-height: 700px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.img-wrapper img {
    max-width: 100%;
    height: auto;
    object-fit: contain;
}

.table-container {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
    font-size: 0.95rem;
}

.data-table th, .data-table td {
    padding: 0.875rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-muted);
    font-weight: 600;
}

.badge-status {
    display: inline-block;
    padding: 0.25rem 0.6rem;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 600;
}

.badge-status.CORRECT { background: rgba(16, 185, 129, 0.15); color: var(--success); }
.badge-status.INCORRECT { background: rgba(239, 68, 68, 0.15); color: var(--danger); }
.badge-status.BLANK { background: rgba(148, 163, 184, 0.15); color: var(--text-muted); }
.badge-status.MULTIPLE { background: rgba(245, 158, 11, 0.15); color: var(--warning); }