/* Variables del tema */
:root {
    /* Colores principales */
    --primary-color: #4a69bd;
    --primary-dark: #3867d6;
    --primary-light: rgba(74, 105, 189, 0.1);
    
    /* Colores de fondo */
    --background-main: #f5f6fa;
    --background-white: #ffffff;
    --background-hover: rgba(255, 255, 255, 0.1);
    
    /* Colores de texto */
    --text-primary: #2f3542;
    --text-secondary: #747d8c;
    
    /* Estados */
    --success-color: #2ed573;
    --success-light: #d4f8e8;
    --success-dark: #1b8a59;
    --danger-color: #e84118;
    --danger-light: #ffe0dc;
    --danger-dark: #af2f1b;
    --warning-color: #ffa502;
    --warning-light: #fff3cd;
    --warning-dark: #856404;
    
    /* Sombras y efectos */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition-default: all 0.2s ease;
}

/* Reset y estilos base */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--background-main);
    color: var(--text-primary);
    line-height: 1.5;
    margin: 0;
    padding: 0;
}

/* Layout principal */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Sidebar mejorado */
.sidebar {
    background: linear-gradient(180deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    padding: 1rem 0;
}

.sidebar-link {
    color: var(--background-white);
    opacity: 0.9;
    transition: var(--transition-default);
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    text-decoration: none;
}

.sidebar-link:hover {
    background-color: var(--background-hover);
    transform: translateX(4px);
    opacity: 1;
}

.sidebar-link.active {
    background-color: rgba(255, 255, 255, 0.2);
    border-right: 3px solid var(--background-white);
}

/* Submenu mejorado */
.submenu {
    margin-left: 1rem;
    border-left: 1px solid rgba(255, 255, 255, 0.1);
}

.submenu .sidebar-link {
    padding-left: 2rem;
    font-size: 0.9rem;
    opacity: 0.8;
}

.submenu-toggle {
    cursor: pointer;
    padding: 0.75rem 1rem;
    color: var(--background-white);
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: var(--transition-default);
}

.submenu-toggle i {
    transition: transform 0.2s ease;
}

.submenu-toggle.active i {
    transform: rotate(180deg);
}

/* Tarjetas */
.card {
    background: var(--background-white);
    border-radius: 0.5rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-default);
    padding: 1.5rem;
    margin-bottom: 1rem;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Formularios mejorados */
.form-group {
    margin-bottom: 1rem;
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid #dcdde1;
    border-radius: 0.375rem;
    transition: var(--transition-default);
    background-color: var(--background-white);
}

.form-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px var(--primary-light);
    outline: none;
}

/* Botones mejorados */
.btn {
    padding: 0.75rem 1.5rem;
    border-radius: 0.375rem;
    font-weight: 500;
    transition: var(--transition-default);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--background-white);
    border: none;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-1px);
}

/* Tablas mejoradas */
.table-container {
    overflow-x: auto;
    margin: 1rem 0;
}

.table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
}

.table th {
    background-color: var(--background-main);
    color: var(--text-secondary);
    font-weight: 600;
    padding: 1rem;
    text-align: left;
}

.table td {
    padding: 1rem;
    border-top: 1px solid #e9ecef;
}

.table tr:hover {
    background-color: var(--background-main);
}

/* Responsive mejorado */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        width: 250px;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }

    .sidebar.active {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
        padding: 1rem;
    }
    
    .card {
        padding: 1rem;
    }
}

/* Animaciones */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in {
    animation: fadeIn 0.3s ease forwards;
}

/* Utilidades */
.hidden {
    display: none !important;
}

.rotate-180 {
    transform: rotate(180deg);
}

.card-param {
    background: white;
    padding: 25px 30px;
    border-radius: 12px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.07);
    margin-top: 30px;
}

.card-param h2 {
    font-size: 20px;
    font-weight: bold;
    color: #333;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.card-param label {
    font-weight: 600;
    color: #444;
    margin-bottom: 6px;
    display: block;
}

.card-param input,
.card-param select {
    width: 100%;
    padding: 10px;
    border: 1px solid #CCC;
    border-radius: 8px;
    outline: none;
    transition: 0.2s;
}

.card-param input:focus,
.card-param select:focus {
    border-color: #4e73df;
    box-shadow: 0 0 0 2px rgba(78, 115, 223, 0.15);
}

.card-param .form-group {
    margin-bottom: 15px;
}

.btn-actualizar {
    background-color: #2563eb;
    color: white;
    border: none;
    padding: 12px 25px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: 0.2s;
}

.btn-actualizar:hover {
    background-color: #1e4fc2;
}