/* --- Reset y Variables Globales --- */
:root {
    --primary-color: #0d47a1; /* Azul oscuro */
    --secondary-color: #1976d2; /* Azul medio */
    --accent-color: #ffc107; /* Amarillo/Ámbar */
    --light-gray-color: #f4f4f4;
    --medium-gray-color: #e0e0e0;
    --dark-gray-color: #333;
    --text-color: #212121;
    --success-color: #4CAF50;
    --error-color: #D32F2F;
    --font-family: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
}

body {
    font-family: var(--font-family);
    margin: 0;
    background-color: var(--light-gray-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    color: var(--secondary-color);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* --- Encabezado --- */
.main-header {
    background-color: var(--primary-color);
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.main-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.main-header h1 {
    margin: 0;
    font-size: 1.5rem;
}

.main-header h1 a {
    color: white;
    text-decoration: none;
}

.main-header nav a {
    color: white;
    margin-left: 20px;
    padding: 5px 10px;
    border-radius: 4px;
    transition: background-color 0.3s;
}

.main-header nav a:hover {
    background-color: var(--secondary-color);
    text-decoration: none;
}

/* --- Contenido Principal --- */
main.container {
    background-color: white;
    padding: 30px;
    margin-top: 20px;
    margin-bottom: 20px;
    border-radius: 8px;
    box-shadow: 0 0 15px rgba(0,0,0,0.05);
}

h2 {
    color: var(--primary-color);
    border-bottom: 2px solid var(--medium-gray-color);
    padding-bottom: 10px;
    margin-top: 0;
}

/* --- Filtros --- */
.filters {
    display: flex;
    gap: 15px;
    margin: 20px 0;
    padding: 15px;
    background-color: var(--light-gray-color);
    border-radius: 8px;
    flex-wrap: wrap;
}

.filters input[type="text"],
.filters select {
    padding: 10px;
    border: 1px solid var(--medium-gray-color);
    border-radius: 4px;
    font-size: 1rem;
}

.filters input[type="text"] {
    flex-grow: 1;
}

/* --- Botones --- */
.btn, button {
    padding: 10px 15px;
    font-size: 1rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    text-decoration: none;
    text-align: center;
    transition: background-color 0.3s, box-shadow 0.3s;
}

.btn-primary, .filters button {
    background-color: var(--primary-color);
    color: white;
}

.btn-primary:hover, .filters button:hover {
    background-color: var(--secondary-color);
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.btn-secondary {
    background-color: #6c757d;
    color: white;
}
.btn-secondary:hover {
    background-color: #5a6268;
}

.btn-success {
    background-color: #28a745;
    color: white;
}
.btn-success:hover {
    background-color: #218838;
}

.btn-info {
    background-color: #17a2b8;
    color: white;
}
.btn-info:hover {
    background-color: #138496;
}

.btn-sm {
    padding: 6px 10px;
    font-size: 0.85rem;
}

.action-buttons {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

/* --- Tabla --- */
.table-container {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

table th, table td {
    padding: 12px 15px;
    border: 1px solid var(--medium-gray-color);
    text-align: left;
}

table th {
    background-color: var(--light-gray-color);
    font-weight: bold;
    color: var(--primary-color);
}

table tbody tr:nth-child(even) {
    background-color: #f9f9f9;
}

table tbody tr:hover {
    background-color: #f1f1f1;
}

/* --- Indicadores de Estado (Status) --- */
.status {
    padding: 5px 10px;
    border-radius: 12px;
    color: white;
    font-size: 0.8rem;
    font-weight: bold;
    text-transform: uppercase;
}

.status-abierta {
    background-color: var(--success-color);
}

.status-cerrada {
    background-color: var(--error-color);
}

.status-adjudicada {
    background-color: var(--secondary-color);
}

/* --- Paginación --- */
.pagination {
    margin-top: 20px;
    text-align: center;
}

.pagination a, .pagination span {
    display: inline-block;
    padding: 8px 12px;
    margin: 0 4px;
    border: 1px solid var(--medium-gray-color);
    border-radius: 4px;
}

.pagination a:hover {
    background-color: var(--medium-gray-color);
    text-decoration: none;
}

/* --- Footer --- */
.main-footer {
    text-align: center;
    padding: 20px;
    color: #666;
}