/* Variables CSS para tema ultra glamuroso */
:root {
    --primary-color: #1e3a8a; /* Azul real (modo oscuro por defecto) */
    --secondary-color: #3b82f6; /* Azul zafiro */
    --dark-bg: #0f172a; /* Negro profundo */
    --card-bg: #1e293b; /* Negro azulado opulento */
    --text-primary: #f9fafb; /* Blanco puro */
    --border-color: #d1d5db; /* Plata metálica (blanco grisáceo) */
    --shadow-elegant: 0 10px 30px rgba(0, 0, 0, 0.2), 0 0 15px rgba(30, 58, 138, 0.1); /* Sombras frías */
    --gradient-primary: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
}

/* Tema claro */
[data-theme="light"] {
    --primary-color: #1e40af; /* Azul oscuro */
    --secondary-color: #60a5fa; /* Azul claro */
    --dark-bg: #f5f5f4; /* Crema suave (cercano a blanco) */
    --card-bg: #e5e7eb; /* Gris claro (cercano a blanco) */
    --text-primary: #1e293b; /* Negro profundo */
    --border-color: #cbd5e1; /* Plata suave (blanco grisáceo) */
    --shadow-elegant: 0 10px 30px rgba(0, 0, 0, 0.1), 0 0 15px rgba(30, 64, 175, 0.1); /* Sombras frías */
    --gradient-primary: linear-gradient(135deg, #1e40af 0%, #60a5fa 100%);
}

body {
    background-color: var(--dark-bg);
    color: var(--text-primary);
    font-family: "Playfair Display", "Inter", -apple-system, BlinkMacSystemFont, serif;
    line-height: 1.7;
    transition: all 0.4s ease;
    scroll-behavior: smooth;
}

[data-theme="light"] body {
    background-color: var(--dark-bg);
}

/* Sobrescritura de Bootstrap */
[data-theme] .text-muted {
    color: var(--text-primary) !important; /* Blanco o negro según modo */
}

[data-theme] .text-danger {
    color: #dc2626 !important; /* Rojo puro y legible (excepción controlada) */
}

[data-theme] .btn-warning {
    background: var(--gradient-primary) !important;
    border-color: var(--primary-color) !important;
    color: var(--text-primary) !important;
    box-shadow: var(--shadow-elegant);
}

[data-theme] .btn-warning:hover {
    background: linear-gradient(135deg, darken(var(--primary-color), 10%) 0%, var(--secondary-color) 100%) !important;
    transform: translateY(-3px) scale(1.02);
}

[data-theme] .bg-warning {
    background-color: var(--card-bg) !important; /* Usa el fondo de la tarjeta */
}

[data-theme] .alert-warning {
    background-color: var(--card-bg) !important;
    border-color: var(--border-color) !important;
    color: var(--text-primary) !important;
    box-shadow: var(--shadow-elegant);
}

/* Gradientes */
.bg-gradient-primary {
    background: var(--gradient-primary);
}

/* Navbar */
.navbar {
    backdrop-filter: blur(15px);
    background: rgba(15, 23, 42, 0.9);
    border-bottom: 1px solid var(--border-color);
    transition: all 0.4s ease;
}

[data-theme="light"] .navbar {
    background: rgba(229, 231, 235, 0.95); /* Gris claro con opacidad */
    border-bottom: 1px solid var(--border-color);
}

.navbar-brand span {
    color: var(--secondary-color);
    font-weight: 700;
    text-shadow: 0 0 10px rgba(59, 130, 246, 0.3);
}

[data-theme="light"] .navbar-brand span {
    color: var(--secondary-color);
    text-shadow: none;
}

.navbar-brand:hover {
    transform: scale(1.05);
}

.nav-link {
    position: relative;
    font-weight: 500;
    color: var(--text-primary) !important;
    transition: all 0.4s ease;
}

[data-theme="light"] .nav-link {
    color: var(--text-primary) !important; /* Negro profundo en modo claro */
}

.nav-link::after {
    content: "";
    position: absolute;
    width: 0;
    height: 3px;
    bottom: -5px;
    left: 0;
    background: var(--gradient-primary);
    transition: all 0.4s ease;
    border-radius: 2px;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.dropdown-menu {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 15px;
}

[data-theme="light"] .dropdown-menu {
    background: var(--card-bg);
}

.dropdown-item {
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.dropdown-item:hover {
    background: var(--primary-color);
    color: var(--text-primary);
}

/* Cards */
.card {
    border: none;
    border-radius: 20px;
    background: var(--card-bg);
    overflow: hidden;
    transition: all 0.5s ease;
    box-shadow: var(--shadow-elegant);
}

.card:hover {
    transform: translateY(-15px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3), 0 0 20px rgba(30, 58, 138, 0.2); /* Azul frío */
}

.card-img-top {
    border-top-left-radius: 20px;
    border-top-right-radius: 20px;
    transition: all 0.5s ease;
}

.card:hover .card-img-top {
    transform: scale(1.1);
}

.card-title {
    color: var(--secondary-color);
    font-family: "Playfair Display", serif;
    font-weight: 600;
}

.card-text {
    color: var(--text-primary);
}

/* Buttons */
.btn {
    border-radius: 12px;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.4s ease;
    border: 1px solid transparent;
    color: var(--text-primary) !important;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.btn-primary {
    background: var(--gradient-primary);
    border-color: var(--primary-color);
}

.btn-primary:hover {
    background: linear-gradient(135deg, darken(var(--primary-color), 10%) 0%, var(--secondary-color) 100%);
}

/* Animations */
@keyframes glideIn {
    from { opacity: 0; transform: translateY(50px) scale(0.9); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.animate-glide-in {
    animation: glideIn 0.8s ease-out;
}

/* Responsive Design */
@media (max-width: 768px) {
    .navbar-brand span {
        font-size: 1.2rem;
    }
    .nav-link {
        font-size: 0.9rem;
    }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--dark-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-primary);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}

[data-theme="light"] ::-webkit-scrollbar-track {
    background: var(--card-bg);
}