:root {
    /* Colores principales */
    --color-primary: #f2b424;
    --color-secondary: #ed1c23;
    --color-dark: #000000;
    --color-light: #ffffff;
    --color-gray: #f8f9fa;
    
    /* Dimensiones */
    --navbar-height: 70px;
    --sidebar-width: 250px;
    --border-radius: 8px;
    
    /* Tipografía */
    --font-size-base: 1rem;
    --font-size-lg: 1.25rem;
    --font-size-xl: 1.5rem;
    --font-size-sm: 0.875rem;
    
    /* Espaciados */
    --spacing: 1rem;
    --spacing-sm: 0.5rem;
    --spacing-lg: 1.5rem;
}

/* ========== BASE STYLES ========== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--color-gray);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: #333;
    line-height: 1.6;
    padding-top: var(--navbar-height);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ========== NAVBAR STYLES ========== */
.navbar {
    background-color: var(--color-dark) !important;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
    min-height: var(--navbar-height);
    padding: 0 var(--spacing);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1050;
    transition: all 0.3s ease;
}

/* Navbar Brand (Logo + Text) */
.system-brand {
    display: inline-flex;
    align-items: center;
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-light) !important;
    text-decoration: none;
    transition: all 0.3s ease;
}

.navbar-logo {
    height: 42px;
    width: auto;
    margin-right: var(--spacing-sm);
    transition: transform 0.3s ease;
}

.system-title {
    font-size: inherit;
    line-height: 1.3;
    display: inline-block;
    vertical-align: middle;
    transition: all 0.3s ease;
}

/* Hover Effects */
.system-brand:hover {
    color: var(--color-primary) !important;
    text-decoration: none;
}

.system-brand:hover .navbar-logo {
    transform: scale(1.08);
}

.system-brand:hover .system-title {
    transform: translateX(3px);
}

/* Navbar Links */
.navbar-nav {
    display: flex;
    align-items: center;
}

.nav-link {
    color: var(--color-light) !important;
    font-size: var(--font-size-base);
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing);
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
}

.nav-link:hover {
    color: var(--color-primary) !important;
    transform: translateY(-2px);
}

.nav-link i {
    margin-right: 8px;
    width: 20px;
    text-align: center;
    font-size: 1.1em;
}

/* Dropdown Menu */
.dropdown-menu {
    background-color: var(--color-dark);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--border-radius);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.dropdown-item {
    color: var(--color-light);
    padding: var(--spacing-sm) var(--spacing);
    transition: all 0.2s;
}

.dropdown-item:hover {
    background-color: rgba(242, 180, 36, 0.15);
    color: var(--color-primary);
}

.dropdown-divider {
    border-color: rgba(255, 255, 255, 0.1);
}

/* Mobile Toggler */
.navbar-toggler {
    border-color: rgba(255, 255, 255, 0.5);
    padding: 0.5rem;
}

.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg viewBox='0 0 30 30' xmlns='http://www.w3.org/2000/svg'%3e%3cpath stroke='rgba(255, 255, 255, 1)' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* ========== MAIN CONTENT ========== */
.main-content {
    flex: 1;
    padding: var(--spacing-lg);
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
}

.container {
    padding-top: var(--spacing);
}

/* ========== DASHBOARD STYLES ========== */
.card {
    border: none;
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: all 0.3s ease;
    margin-bottom: var(--spacing-lg);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.12);
}

.card-header {
    background-color: white;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    font-weight: 600;
    padding: var(--spacing);
}

.card-body {
    padding: var(--spacing);
}

/* ========== UTILITY CLASSES ========== */
.text-primary { color: var(--color-primary) !important; }
.text-secondary { color: var(--color-secondary) !important; }
.text-light { color: var(--color-light) !important; }
.text-dark { color: var(--color-dark) !important; }

.bg-primary { background-color: var(--color-primary) !important; }
.bg-secondary { background-color: var(--color-secondary) !important; }
.bg-dark { background-color: var(--color-dark) !important; }
.bg-light { background-color: var(--color-light) !important; }

.rounded { border-radius: var(--border-radius) !important; }
.shadow { box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1) !important; }

.mt-navbar { margin-top: var(--navbar-height) !important; }
.pt-navbar { padding-top: var(--navbar-height) !important; }

/* ========== RESPONSIVE ADJUSTMENTS ========== */
@media (max-width: 991.98px) {
    .navbar-brand {
        font-size: var(--font-size-base);
    }
    
    .navbar-logo {
        height: 38px;
    }
    
    .system-title {
        font-size: var(--font-size-base) !important;
    }
    
    .navbar-collapse {
        padding-top: var(--spacing-sm);
    }
    
    .dropdown-menu {
        background-color: transparent !important;
        border: none !important;
        box-shadow: none;
    }
}

@media (min-width: 992px) {
    .system-brand {
        font-size: var(--font-size-xl);
    }
    
    .navbar-logo {
        height: 46px;
    }
}

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

.fade-in {
    animation: fadeIn 0.4s ease-out forwards;
}

/* ========== PRINT STYLES ========== */
@media print {
    .navbar {
        display: none !important;
    }
    
    body {
        padding-top: 0;
        background: white !important;
    }
    
    .card {
        box-shadow: none !important;
        border: 1px solid #ddd !important;
    }
}