:root {
    --brief-bg: #ffffff;
    --brief-text: #1f2937;
    --brief-primary: #3b82f6; /* Blue-500 */
    --brief-primary-hover: #2563eb;
    --brief-secondary: #64748b;
    --brief-accent: #8b5cf6; /* Violet */
    --brief-border: #e2e8f0;
    --brief-input-bg: #f8fafc;
    --brief-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --brief-radius: 0.5rem;
    
    /* Status Colors */
    --status-pendiente: #f59e0b;
    --status-proceso: #3b82f6;
    --status-finalizada: #10b981;
    
    /* Priority Colors */
    --priority-baja: #10b981;
    --priority-media: #f59e0b;
    --priority-alta: #ef4444;
    --priority-critica: #7f1d1d;
}

/* Container */
.brief-interno-form-container,
.brief-interno-list-container {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 2rem;
    background: var(--brief-bg);
    border-radius: var(--brief-radius);
    box-shadow: var(--brief-shadow);
    font-family: 'Inter', sans-serif;
    color: var(--brief-text);
}

.brief-interno-form-container h2,
.brief-interno-list-container h2 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: var(--brief-text);
    border-bottom: 2px solid var(--brief-border);
    padding-bottom: 0.5rem;
}

/* Form Styles */
fieldset {
    border: 1px solid var(--brief-border);
    border-radius: var(--brief-radius);
    padding: 1.5rem;
    margin-bottom: 2rem;
    background: #fff;
}

legend {
    padding: 0 0.5rem;
    font-weight: 600;
    color: var(--brief-secondary);
    text-transform: uppercase;
    font-size: 0.875rem;
    letter-spacing: 0.05em;
}

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

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    font-size: 0.95rem;
}

.form-group input[type="text"],
.form-group input[type="url"],
.form-group input[type="date"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--brief-border);
    border-radius: var(--brief-radius);
    background-color: var(--brief-input-bg);
    transition: all 0.2s;
    font-size: 1rem;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--brief-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Radio Group */
.radio-group-type {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.radio-group-type label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    border: 1px solid var(--brief-border);
    border-radius: var(--brief-radius);
    cursor: pointer;
    transition: all 0.2s;
    background: var(--brief-input-bg);
}

.radio-group-type label:hover {
    background: #eef2ff;
    border-color: var(--brief-primary);
}

.radio-group-type input[type="radio"] {
    accent-color: var(--brief-primary);
}

.btn-submit {
    background: var(--brief-primary);
    color: white;
    padding: 1rem 2rem;
    border: none;
    border-radius: var(--brief-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
    width: 100%;
}

.btn-submit:hover {
    background: var(--brief-primary-hover);
}

/* Table Styles */
.table-responsive {
    overflow-x: auto;
}

.brief-table {
    width: 100%;
    border-collapse: collapse;
    background: white;
}

.brief-table th {
    background: var(--brief-input-bg);
    color: var(--brief-secondary);
    font-weight: 600;
    text-align: left;
    padding: 1rem;
    border-bottom: 2px solid var(--brief-border);
}

.brief-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--brief-border);
}

.brief-table tr:hover {
    background-color: #f8fafc;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    color: white;
}

.status-pendiente { background-color: var(--status-pendiente); }
.status-proceso { background-color: var(--status-proceso); }
.status-finalizada { background-color: var(--status-finalizada); }

.priority-baja { background-color: var(--priority-baja); }
.priority-media { background-color: var(--priority-media); }
.priority-alta { background-color: var(--priority-alta); }
.priority-critica { background-color: var(--priority-critica); }

.btn-view {
    background: white;
    border: 1px solid var(--brief-border);
    padding: 0.4rem 0.8rem;
    border-radius: 0.375rem;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 0.875rem;
}

.btn-view:hover {
    background: var(--brief-input-bg);
    border-color: var(--brief-secondary);
}

/* Modal Styles */
.brief-modal {
    display: none;
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
}

.brief-modal-content {
    background-color: #fff;
    margin: 5% auto;
    padding: 0;
    border: 1px solid #888;
    width: 80%;
    max-width: 800px;
    border-radius: var(--brief-radius);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from { transform: translateY(-20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.close-modal {
    color: #64748b;
    float: right;
    font-size: 2rem;
    font-weight: bold;
    margin: 1rem 1.5rem;
    cursor: pointer;
}

.close-modal:hover {
    color: #000;
}

#modal-body {
    padding: 2rem;
}

.modal-header {
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--brief-border);
    padding-bottom: 1rem;
}

.modal-header h2 {
    margin: 0 0 0.5rem 0;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.modal-section {
    margin-bottom: 2rem;
}

.modal-section h3 {
    font-size: 1.1rem;
    color: var(--brief-secondary);
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-left: 3px solid var(--brief-primary);
    padding-left: 0.75rem;
}

/* Comments */
.comment {
    background: var(--brief-input-bg);
    padding: 1rem;
    border-radius: var(--brief-radius);
    margin-bottom: 1rem;
    border-left: 3px solid var(--brief-border);
}

.add-comment textarea {
    width: 100%;
    margin-bottom: 0.5rem;
    padding: 0.75rem;
    border-radius: var(--brief-radius);
    border: 1px solid var(--brief-border);
}

#btn-add-comment {
    background: var(--brief-secondary);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    cursor: pointer;
}

@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
    }
    .brief-modal-content {
        width: 95%;
        margin: 10% auto;
    }
}