:root {
    --sidebar-width: 250px;
    --primary-color: #0d6efd;
    --sidebar-bg: #212529;
    --sidebar-active: rgba(255, 255, 255, 0.1);
    --transition-speed: 0.3s;
    --card-border-radius: 12px;
    --card-box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

body {
    font-family: 'Inter', sans-serif;
    background-color: #f8f9fa;
    overflow-x: hidden;
    color: #343a40;
    line-height: 1.6;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    height: 100vh;
    background-color: var(--sidebar-bg);
    position: fixed;
    left: 0;
    top: 0;
    padding: 1rem;
    transition: transform var(--transition-speed) ease;
    z-index: 1000;
    display: flex;
    flex-direction: column;
}

/* Estado por defecto: visible en desktop */
.sidebar {
    transform: translateX(0);
}

.sidebar-collapsed {
    transform: translateX(-100%);
}

.sidebar-toggler {
    position: fixed;
    top: 1rem;
    left: 1rem;
    z-index: 1100;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: white;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
    transition: left var(--transition-speed) ease;
}

.sidebar:not(.sidebar-collapsed) ~ .sidebar-toggler {
    left: calc(var(--sidebar-width) + 1rem);
}

/* Main Content */
.main-content {
    margin-left: var(--sidebar-width);
    padding: 2rem;
    transition: all var(--transition-speed) ease;
    width: calc(100% - var(--sidebar-width));
    min-height: 100vh;
}

.main-content-collapsed {
    margin-left: 0;
    width: 100%;
}

/* Cards Container */
.cards-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    width: 100%;
}

/* Cards Mejoradas - Mayor legibilidad */
.dashboard-card {
    border: none;
    border-radius: var(--card-border-radius);
    box-shadow: var(--card-box-shadow);
    transition: all 0.25s ease;
    height: 100%;
    overflow: hidden;
}

.dashboard-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.card-icon {
    padding: 12px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    background-color: rgba(0,0,0,0.05);
    width: 60px;
    height: 60px;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: #2c3e50;
    letter-spacing: -0.01em;
}

.card-text {
    font-size: 0.95rem;
    line-height: 1.5;
    color: #6c757d !important;
    margin-bottom: 1rem;
}

/* Mejora para mostrar texto en móviles */
.dashboard-card .d-none.d-sm-block {
    opacity: 0;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
}

.dashboard-card:hover .d-none.d-sm-block {
    opacity: 1;
    max-height: 100px;
}

/* Para móviles, mostrar siempre el texto en las tarjetas */
@media (max-width: 576px) {
    .dashboard-card .d-none.d-sm-block {
        opacity: 1;
        max-height: none;
        display: block !important;
    }
    
    .card-text {
        font-size: 0.9rem;
    }
    
    .card-title {
        font-size: 1.1rem;
    }
}

/* Badges mejorados */
.badge {
    font-size: 0.8rem;
    padding: 0.35em 0.65em;
    font-weight: 500;
}

/* Botones mejorados */
.btn {
    border-radius: 8px;
    font-weight: 500;
    padding: 0.5rem 1.25rem;
    transition: all 0.2s ease;
}

.btn:hover {
    transform: translateY(-2px);
}

/* Para pantallas muy grandes */
@media (min-width: 1400px) {
    .cards-container {
        grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    }
    
    .card-title {
        font-size: 1.3rem;
    }
    
    .card-text {
        font-size: 1rem;
    }
}

/* Responsive */
@media (max-width: 992px) {
    /* En móviles, el sidebar siempre está oculto por defecto */
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar-expanded {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
        width: 100%;
        padding: 1rem;
    }
    
    .sidebar-toggler {
        display: flex;
    }
    
    .sidebar-expanded ~ .sidebar-toggler {
        left: calc(var(--sidebar-width) + 1rem);
    }
    
    .cards-container {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}