:root {
    --primary-color: #ffa500;
    --text-color: #333;
    --background-color: #f5f5f5;
    --card-background: white;
    --border-color: #e0e0e0;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
    --sidebar-width: 260px;
    --sidebar-collapsed-width: 70px;
    --transition-speed: 0.3s;
    --border-radius-sm: 5px;
    --border-radius-md: 10px;
    --spacing-xs: 5px;
    --spacing-sm: 10px;
    --spacing-md: 15px;
    --spacing-lg: 20px;
    --spacing-xl: 30px;
    --font-sm: 14px;
    --font-md: 16px;
    --font-lg: 18px;
    --font-xl: 24px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
}

.dashboard {
    display: flex;
    min-height: 100vh;
}

.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    transition: margin-left var(--transition-speed) ease;
    padding-bottom: var(--spacing-lg);
}

.sidebar.collapsed+.main-content {
    margin-left: var(--sidebar-collapsed-width);
}

.top-bar {
    height: 70px;
    background: var(--card-background);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    padding: 0 var(--spacing-xl);
    position: sticky;
    top: 0;
    z-index: 10;
    box-shadow: var(--shadow-sm);
}

.top-bar h1 {
    font-size: var(--font-xl);
    color: var(--text-color);
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    font-size: var(--font-lg);
    cursor: pointer;
    margin-right: var(--spacing-md);
    color: var(--text-color);
    padding: var(--spacing-xs);
    border-radius: var(--border-radius-sm);
}

.mobile-toggle:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

/* Seccion de Avisos del Inicio */
.notices {
    margin: var(--spacing-lg);
    padding: var(--spacing-lg);
    background-color: var(--card-background);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
}

.notices h2 {
    text-align: center;
    margin-bottom: var(--spacing-md);
    font-size: var(--font-lg);
    color: var(--text-color);
}

.notices-display {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-sm);
}

.notices-card {
    border: 1px solid var(--primary-color);
    background: var(--card-background);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-speed) ease, transform var(--transition-speed) ease;
}

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

.notices-card p {
    color: var(--text-color);
    font-size: var(--font-md);
}

/* Responsive styles */
@media (max-width: 1200px) {
    .notices-display {
        grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    }
}

@media (max-width: 992px) {
    .main-content {
        margin-left: 0;
    }

    .notices,
    .modulo-section {
        margin: var(--spacing-md);
        padding: var(--spacing-md);
    }

    .top-bar {
        padding: 0 var(--spacing-md);
    }

    .top-bar h1 {
        font-size: var(--font-lg);
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        z-index: 1000;
        position: fixed;
        top: 0;
        left: 0;
        height: 100%;
        width: 80% !important;
        max-width: 300px;
    }

    .sidebar.mobile-open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0 !important;
    }

    .mobile-toggle {
        display: block;
    }

    .notices-display {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: var(--spacing-sm);
    }

    .notices,
    .modulo-section {
        margin: var(--spacing-sm);
        padding: var(--spacing-sm);
    }

    .top-bar {
        height: 60px;
    }
}

@media (max-width: 480px) {
    .notices-display {
        grid-template-columns: 1fr;
    }

    .notices,
    .modulo-section {
        margin: var(--spacing-xs);
        padding: var(--spacing-sm);
    }

    .top-bar {
        padding: 0 var(--spacing-sm);
        height: 50px;
    }

    .top-bar h1 {
        font-size: 1.2rem;
    }
}

/* Touch device optimizations */
@media (hover: none) {
    .notices-card:hover {
        transform: none;
    }

    .notices-card:active {
        background-color: rgba(255, 165, 0, 0.05);
    }
}

/* Landscape mode for mobile */
@media (max-height: 480px) and (orientation: landscape) {
    .notices {
        margin: var(--spacing-xs);
        padding: var(--spacing-sm);
    }

    .notices-display {
        grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    }
}

/* Reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
    .main-content {
        transition: none;
    }

    .notices-card {
        transition: none;
    }
}

/* High-resolution screens */
@media (min-resolution: 192dpi) {
    .notices-card {
        border-width: 0.5px;
    }
}

/* Dark mode support - keeping background white as requested */
@media (prefers-color-scheme: dark) {
    :root {
        --card-background: white;
        --text-color: #333;
        --background-color: #f5f5f5;
        --border-color: #e0e0e0;
    }
}

/* Overlay for mobile sidebar */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    transition: opacity var(--transition-speed);
}

.sidebar-overlay.active {
    display: block;
    opacity: 1;
}