:root {
    --primary-gradient: linear-gradient(135deg, #4a69bd 0%, #3051a3 100%);
    --secondary-gradient: linear-gradient(135deg, #6c757d 0%, #5a6268 100%);
    --info-gradient: linear-gradient(135deg, #17a2b8 0%, #117a8b 100%);
    --success-gradient: linear-gradient(135deg, #28a745 0%, #1e7e34 100%);
    --card-header-gradient: linear-gradient(135deg, #343a40 0%, #212529 100%);
    --concept-obs-bg: #e9ecef;
    --concept-obs-border: #adb5bd;
    --estado-pendiente-color: #dc3545;
    --estado-en-proceso-color: #ffc107;
    --estado-completado-color: #28a745;
}

.hero-section {
    background: var(--primary-gradient);
    color: white;
    border-radius: 15px;
    padding: 3rem 2rem;
    margin-bottom: 3rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.welcome-title {
    font-weight: 700;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.4);
}

.client-name {
    font-weight: 300;
    opacity: 0.9;
}

.subtitle {
    font-size: 1.1rem;
    opacity: 0.8;
}

.modern-card {
    border: none;
    border-radius: 15px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    overflow: hidden;
}

    .modern-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
    }

.card-header-modern {
    background: var(--card-header-gradient);
    color: white;
    padding: 1.5rem;
    border: none;
    font-weight: 600;
    border-top-left-radius: 15px;
    border-top-right-radius: 15px;
}


.estado-pendiente {
    background-color: var(--estado-pendiente-color);
    box-shadow: 0 4px 15px rgba(220, 53, 69, 0.3);
}

.estado-en-proceso {
    background-color: var(--estado-en-proceso-color);
    color: #343a40;
    box-shadow: 0 4px 15px rgba(255, 193, 7, 0.3);
}

.estado-completado {
    background-color: var(--estado-completado-color);
    box-shadow: 0 4px 15px rgba(40, 167, 69, 0.3);
}

.status-badge {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.1rem;
    color: white;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.info-item {
    background: #f8f9fa;
    border-radius: 10px;
    padding: 1rem;
    margin-bottom: 1rem;
    border-left: 4px solid #007bff;
    transition: all 0.3s ease;
}

    .info-item:hover {
        background: #e9ecef;
        transform: translateX(5px);
    }

.info-label {
    font-weight: 600;
    color: #6c757d;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.5rem;
}

.info-value {
    font-size: 1.1rem;
    color: #343a40;
    margin: 0;
}

.section-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, #dee2e6, transparent);
    border: none;
    margin: 2.5rem 0;
}

.section-title {
    color: #343a40;
    font-weight: 600;
    margin-bottom: 1.5rem;
    position: relative;
    padding-left: 1.5rem;
}

    .section-title::before {
        content: '';
        position: absolute;
        left: 0;
        top: 50%;
        transform: translateY(-50%);
        width: 5px;
        height: 100%;
        background: var(--primary-gradient);
        border-radius: 2px;
    }

    .section-title i {
        margin-right: 0.5rem;
        color: #007bff;
    }


.modern-table {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
}

    .modern-table thead th {
        background: var(--primary-gradient);
        color: white;
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 0.5px;
        font-size: 0.9rem;
        padding: 1rem;
        border: none;
    }

    .modern-table tbody tr {
        transition: background-color 0.3s ease;
    }

        .modern-table tbody tr:nth-child(even) {
            background-color: #f8f9fa;
        }

        .modern-table tbody tr:hover {
            background-color: #e2e6ea;
        }

    .modern-table tfoot th {
        background: #f1f3f5;
        font-weight: 700;
        color: #343a40;
        border-top: 2px solid #ced4da;
        padding: 1rem;
    }

.attachments-section {
    background: var(--primary-gradient);
    border-radius: 15px;
    padding: 2.5rem;
    margin-top: 4rem;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
    border: 1px solid #e9ecef;
}

.attachments-title {
    color: #ffff;
    font-weight: 700;
    text-align: center;
    margin-bottom: 2rem;
    font-size: 2.5rem;
}




.concept-section, .observations-section {
    background: var(--concept-obs-bg);
    color: #343a40;
    padding: 1.5rem;
    border-radius: 10px;
    margin: 1.5rem 0;
    border: 1px solid var(--concept-obs-border);
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}

    .concept-section h5, .observations-section h5 {
        color: #495057;
        margin-bottom: 1rem;
        font-weight: 600;
    }

    .concept-section i, .observations-section i {
        margin-right: 0.5rem;
        color: #007bff;
    }


.vehicle-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin: 1.5rem 0;
}

.placeholder-modern {
    background: linear-gradient(90deg, #e9ecef 25%, #dee2e6 50%, #e9ecef 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    border-radius: 4px;
}


.icon-large {
    font-size: 1.8rem;
    vertical-align: middle;
    margin-right: 0.5rem;
}

.icon-small {
    font-size: 1rem;
    vertical-align: middle;
    margin-right: 0.3rem;
}