/* Importar fuentes modernas */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* Variables CSS para consistencia */
:root {
    --primary-dark: #0a0a0a;
    --secondary-dark: #1a1a1a;
    --accent-dark: #2a2a2a;
    --primary-blue: #2563eb;
    --accent-blue: #1d4ed8;
    --light-blue: #3b82f6;
    --purple-accent: #6366f1;
    --gradient-primary: linear-gradient(135deg, #1e1b4b 0%, #312e81 50%, #1e1b4b 100%);
    --gradient-secondary: linear-gradient(135deg, #2563eb 0%, #1d4ed8 50%, #6366f1 100%);
    --text-light: #f8fafc;
    --text-gray: #64748b;
    --text-dark: #1e293b;
    --bg-light: #f1f5f9;
    --bg-card: #ffffff;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 8px 25px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.1);
    --border-radius: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
    color: var(--text-light);
    line-height: 1.7;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    position: relative;
    overflow-x: hidden;
}

/* Patrón de fondo sutil */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="50" height="50" patternUnits="userSpaceOnUse"><path d="M 50 0 L 0 0 0 50" fill="none" stroke="%23ffffff" stroke-width="0.5" opacity="0.03"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    pointer-events: none;
    z-index: 0;
}

/* Contenedor principal */
.contenedor-pagina {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Navbar premium con efecto glassmorphism */
.barra-navegacion {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 20px 50px;
    color: var(--text-light);
    position: relative;
    z-index: 1000;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.barra-navegacion::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.02), transparent);
    pointer-events: none;
}

/* Logo navegación */
.logo-nav {
    position: relative;
    z-index: 2;
}

.logo-nav button {
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
    transition: var(--transition);
    border-radius: 12px;
    overflow: hidden;
}

.logo-nav img {
    max-height: 55px;
    height: auto;
    width: auto;
    transition: var(--transition);
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.4));
}

.logo-nav button:hover img {
    transform: scale(1.08) rotate(1deg);
    filter: drop-shadow(0 6px 16px rgba(0, 0, 0, 0.5));
}

/* Botón del menú móvil */
.boton-menu {
    display: none;
    background: rgba(37, 99, 235, 0.2);
    color: var(--text-light);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    padding: 12px 16px;
    font-size: 18px;
    cursor: pointer;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.boton-menu:hover {
    background: rgba(37, 99, 235, 0.4);
    border-color: rgba(255, 255, 255, 0.3);
    transform: scale(1.05);
}

/* Menú de navegación */
.menu-nav ul {
    list-style-type: none;
    display: flex;
    gap: 10px;
    margin: 0;
}

.menu-nav ul li a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    padding: 12px 20px;
    border-radius: 12px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    font-size: 15px;
    letter-spacing: 0.025em;
    display: block;
}

.menu-nav ul li a::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--gradient-secondary);
    transition: var(--transition);
    z-index: -1;
}

.menu-nav ul li a:hover::before {
    left: 0;
}

.menu-nav ul li a:hover {
    color: var(--text-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.4);
}

/* Área de contenido principal */
.area-contenido {
    flex: 1;
    padding: 60px 50px;
    position: relative;
    z-index: 1;
}

/* Contenedor de instituciones */
.contenedor-instituciones {
    max-width: 1400px;
    margin: 0 auto;
}

.contenedor-instituciones h1 {
    text-align: center;
    background: var(--gradient-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 50px;
    font-size: 42px;
    font-weight: 700;
    letter-spacing: -0.025em;
    position: relative;
}

.contenedor-instituciones h1::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    width: 80px;
    height: 4px;
    background: var(--gradient-secondary);
    transform: translateX(-50%);
    border-radius: 2px;
}

/* Grid de instituciones financieras */
.grid-instituciones {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 80px;
}

.grid-instituciones div {
    background: rgba(255, 255, 255, 0.95);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: var(--transition);
    position: relative;
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.grid-instituciones div::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-secondary);
    transform: scaleX(0);
    transition: var(--transition);
    transform-origin: left;
}

.grid-instituciones div:hover::before {
    transform: scaleX(1);
}

.grid-instituciones div:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.2);
}

.grid-instituciones a {
    display: block;
    text-decoration: none;
    color: inherit;
    padding: 30px 25px;
    height: 100%;
}

.grid-instituciones figure {
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 120px;
    background: rgba(248, 250, 252, 0.8);
    border-radius: 12px;
    margin-bottom: 20px;
    transition: var(--transition);
}

.grid-instituciones div:hover figure {
    background: rgba(37, 99, 235, 0.05);
}

.grid-instituciones img {
    max-width: 200px;
    max-height: 120px;
    object-fit: contain;
    transition: var(--transition);
    filter: grayscale(0.2);
}

.grid-instituciones div:hover img {
    filter: grayscale(0);
    transform: scale(1.05);
}

/* Grid de cooperativas */
.grid-cooperativas {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.grid-cooperativas div {
    background: rgba(255, 255, 255, 0.95);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: var(--transition);
    position: relative;
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.grid-cooperativas div::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, #10b981 0%, #059669 50%, #047857 100%);
    transform: scaleX(0);
    transition: var(--transition);
    transform-origin: left;
}

.grid-cooperativas div:hover::before {
    transform: scaleX(1);
}

.grid-cooperativas div:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.2);
}

.grid-cooperativas a {
    display: block;
    text-decoration: none;
    color: inherit;
    padding: 30px 25px;
    height: 100%;
}

.grid-cooperativas figure {
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 120px;
    background: rgba(248, 250, 252, 0.8);
    border-radius: 12px;
    margin-bottom: 20px;
    transition: var(--transition);
}

.grid-cooperativas div:hover figure {
    background: rgba(16, 185, 129, 0.05);
}

.grid-cooperativas img {
    max-width: 200px;
    max-height: 120px;
    object-fit: contain;
    transition: var(--transition);
    filter: grayscale(0.2);
}

.grid-cooperativas div:hover img {
    filter: grayscale(0);
    transform: scale(1.05);
}

/* Responsive navigation mejorado */
@media (max-width: 768px) {
    .barra-navegacion {
        padding: 12px 20px;
        min-height: 70px;
    }
    
    .boton-menu {
        display: flex;
    }

    .menu-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--nav-glass-bg);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-bottom: 1px solid var(--nav-glass-border);
        box-shadow: var(--shadow-lg);
        padding: 20px;
    }

    .menu-nav.menu-nav_visible {
        display: block;
        animation: slideDown 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .menu-nav ul {
        flex-direction: column;
        width: 100%;
        gap: 12px;
    }

    .menu-nav ul li {
        width: 100%;
    }

    .menu-nav ul li a {
        display: block;
        width: 100%;
        text-align: center;
        padding: 16px 20px;
        background: rgba(255, 255, 255, 0.1);
        margin: 0;
        border-radius: 12px;
        font-size: 16px;
        font-weight: 500;
    }

    .menu-nav ul li a:hover {
        background: rgba(255, 255, 255, 0.15);
        transform: translateY(-1px);
    }

    .logo-nav img {
        max-height: 40px;
    }
}

/* Mejoras para pantallas muy pequeñas */
@media (max-width: 480px) {
    .barra-navegacion {
        padding: 10px 15px;
        min-height: 65px;
    }
    
    .menu-nav {
        padding: 15px;
    }

    .menu-nav ul {
        gap: 8px;
    }

    .menu-nav ul li a {
        padding: 14px 16px;
        font-size: 15px;
    }

    .logo-nav img {
        max-height: 35px;
    }

    .boton-menu {
        padding: 10px;
        width: 44px;
        height: 44px;
        font-size: 20px;
    }
}

/* Mejoras para tablets */
@media (min-width: 769px) and (max-width: 1024px) {
    .barra-navegacion {
        padding: 14px 30px;
    }

    .menu-nav ul {
        gap: 6px;
    }

    .menu-nav ul li a {
        padding: 10px 16px;
        font-size: 14px;
    }
}

/* Mejoras para pantallas grandes */
@media (min-width: 1200px) {
    .barra-navegacion {
        padding: 18px 60px;
    }

    .menu-nav ul {
        gap: 12px;
    }

    .menu-nav ul li a {
        padding: 14px 24px;
        font-size: 15px;
    }

    .logo-nav img {
        max-height: 55px;
    }
}
    
    .area-contenido {
        padding: 40px 25px;
    }
    
    .contenedor-instituciones h1 {
        font-size: 32px;
        margin-bottom: 40px;
    }
    
    .grid-instituciones,
    .grid-cooperativas {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 20px;
    }
}

@media (max-width: 480px) {
    .barra-navegacion {
        padding: 12px 20px;
    }
    
    .area-contenido {
        padding: 30px 15px;
    }
    
    .contenedor-instituciones h1 {
        font-size: 28px;
        margin-bottom: 30px;
    }
    
    .grid-instituciones,
    .grid-cooperativas {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .grid-instituciones a,
    .grid-cooperativas a {
        padding: 25px 20px;
    }
}

/* Mejoras de accesibilidad */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Estados de focus para accesibilidad */
.logo-nav button:focus,
.boton-menu:focus,
.menu-nav a:focus,
.grid-instituciones a:focus,
.grid-cooperativas a:focus {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}

/* Animación de entrada */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.grid-instituciones div,
.grid-cooperativas div {
    animation: fadeInUp 0.6s ease-out;
}

/* Retraso de animación para efecto cascada */
.grid-instituciones div:nth-child(1) { animation-delay: 0.1s; }
.grid-instituciones div:nth-child(2) { animation-delay: 0.2s; }
.grid-instituciones div:nth-child(3) { animation-delay: 0.3s; }
.grid-instituciones div:nth-child(4) { animation-delay: 0.4s; }
.grid-instituciones div:nth-child(5) { animation-delay: 0.5s; }
.grid-instituciones div:nth-child(6) { animation-delay: 0.6s; }
.grid-instituciones div:nth-child(7) { animation-delay: 0.7s; }

.grid-cooperativas div:nth-child(1) { animation-delay: 0.8s; }
.grid-cooperativas div:nth-child(2) { animation-delay: 0.9s; }
.grid-cooperativas div:nth-child(3) { animation-delay: 1.0s; }
.grid-cooperativas div:nth-child(4) { animation-delay: 1.1s; }

/* Modo oscuro */
@media (prefers-color-scheme: dark) {
    .grid-instituciones div,
    .grid-cooperativas div {
        background: rgba(30, 41, 59, 0.95);
        border: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .grid-instituciones figure,
    .grid-cooperativas figure {
        background: rgba(15, 23, 42, 0.8);
    }
}