:root {
    --primary: #1a3a6b;
    --accent: #f5a623;
    --accent2: #e06b2d;
    --blue-light: #2e6bc4;
    --text-dark: #1a2340;
    --text-muted: #555;
    --card-bg: #fff;
    --section-bg: #f4f7fc;
    --text-white: #ffffff;
    --yellow-light: #f5a623;
}

* { box-sizing: border-box; }

body {
    font-family: 'Open Sans', sans-serif;
    color: var(--text-dark);
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, .navbar-brand {
    font-family: 'Poppins', sans-serif;
}

.subtitle {
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.mini-hero {
    height: auto;
    background: var(--primary);
}

/* HERO SECTION CON IMAGEN DE FONDO */
.hero-section {
    position: relative;
    min-height: auto;
    padding: 120px 0 10px 0; 
    overflow: hidden;
}

.hero-section::before {
    content: "";
    position: absolute;
    top: -20%;
    left: 0;
    width: 100%;
    height: 120%;
     background-image: linear-gradient(#002e6b70), url('../imagen/institucion/fondo.webp'); 
    /* background-image: url('../imagen/institucion/fondo.webp'); */
    background-size: cover;
    background-position: center;
    z-index: -2;
    transform: translateY(0);
    transition: transform 0.1s linear;
}

.hero-section::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 120px;
    background: linear-gradient(
        to bottom,
        rgba(0, 0, 0, 0.5),
        rgba(0,0,0,0)
    );
    z-index: 1;
}

/* NAVBAR */
.container {
    margin: 5px auto;
}
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 999 !important;
    transform: translateZ(0);
    padding: 10px 0;
    transition: all 0.4s ease;
    background: transparent;
    box-shadow: none;
}

.navbar.scrolled {
    background: linear-gradient(135deg, #0d1f45 0%, #1a3a6b 50%, #1e4fa0 100%);
    padding: 12px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,.08);
}

.navbar-brand img {
    height: 80px;
    width: 200px;
    transition: all 0.3s ease;
}

.navbar-nav{
    padding: 8px 10px;
}

.navbar.scrolled .navbar-brand img {
    height: 60px;
    width: 160px;
}

.nav-link {
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    color: var(--text-white) !important;
    text-shadow: 0 2px 6px rgba(0,0,0,0.5);
    padding: 6px 16px !important;
    transition: color .2s;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 90%;
    height: 4px;
    margin: 0 5%;
    background-color: var(--yellow-light);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.navbar.scrolled .nav-link::after {
    height: 4px;
}

.nav-link:hover::after,
.nav-link.active::after {
    transform: scaleX(1);
}

.nav-link:hover,
.nav-link.active { color: var(--yellow-light) !important; }

.btn-outline-register {
    background: transparent;
    color: #fff;
    font-family: 'Poppins', sans-serif;
    font-weight: 700;
    border-radius: 25px;
    padding: 5px 22px;
    border: 4px solid rgba(255, 255, 255, 0.6);
    transition: all .2s;
}

.btn-outline-register:hover {
    background: rgba(255,255,255,.2);
    color: #ffffff;
    border-color: #fff;
}

.btn-login {
    background: white;
    color: var(--primary);
    font-family: 'Poppins', sans-serif;
    font-weight: 700;
    border-radius: 25px;
    padding: 5px 22px;
    border: none;
    transition: all .2s;
}

.btn-login:hover {
    background: var(--primary);
    color: #ffffff;
    transform: translateY(-2px);
}

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

.dropdown-submenu {
    position: relative;
}

.dropdown-submenu .dropdown-menu {
    top: 0;
    left: 100%;
    margin-left: 0.1rem;
    display: none;
}

.dropdown-submenu .dropdown-menu.show {
    display: block;
}

.navbar-toggler {
    border-color: #ffffff !important;
    background-color: rgba(0, 0, 0, 0.1);
    outline: none !important;
}

.navbar-toggler:focus {
    box-shadow: 0 0 0 0.2rem rgba(255, 255, 255, 0.5) !important;
}
.navbar.menu-open {
    background: linear-gradient(135deg, #0d1f45 0%, #1a3a6b 50%, #1e4fa0 100%);
}

/* FOOTER */
footer {
    background: var(--primary);
    padding: 50px 0 25px;
    color: #c8d9f5;
}

footer .brand-text {
    font-family: 'Poppins', sans-serif;
    font-weight: 800;
    font-size: 1.3rem;
    color: #fff;
}

footer .tagline { font-size: .65rem; color: #8aabdf; }
footer a { color: #9dc2ff; text-decoration: none; transition: color 0.3s; }
footer a:hover { color: var(--accent); }
.footer-icon { color: white; margin-right: 10px; }

.social-link {
    display: flex;
    align-items: center;    
    font-size: 1.4rem;    
    transition: all 0.3s;
}

.social-link:hover {
    transform: translateX(5px);
}

.social-link i { font-size: 1.3rem; }

.footer-divider {
    border-top: 1px solid rgba(255,255,255,.12);
    margin: 30px 0 20px;
}

.footer-copy {
    text-align: center;
    font-size: .85rem;
    color: #8aabdf;
}

@media (max-width: 768px) {    
    html, body {
        overflow-x: hidden;
        width: 100%;
        position: relative;
    }

    .row {
        margin-right: 0;
        margin-left: 0;
    }

    .container {
        padding-right: 15px;
        padding-left: 15px;           
    }

    .nav-link::after {
        width: 100%;
        left: 0;
        margin: 0 0;
    }

    .navbar {
        padding: 10px;
    }

    .navbar-brand img {
        height: 60px;
        width: 140px;
    }

    .navbar.scrolled .navbar-brand img {
        height: 48px;
        width: 120px;
    }
    .hero-section {
        padding: 90px 0 10px 0; 
    }
}

@media (min-width: 992px) and (max-width: 1199px) {
    .dropdown-submenu:hover .dropdown-menu {
        display: block;
    }

    .nav-link {
        font-size: 0.8rem;
        padding: 6px 8px !important;
    }
    
    .btn-login {
        font-size: 0.78rem;
        padding: 7px 14px;
    }

    .navbar-brand img {
        height: 60px;
        width: 140px;
    }

    .navbar.scrolled .navbar-brand img {
        height: 48px;
        width: 120px;
    }

    .navbar-nav {
        gap: 0 !important;
        padding: 4px;
    }
    
    .hero-section {
        padding: 100px 0 10px 0; 
    }
}

@media (min-width: 1200px) and (max-width: 1350px) {
    .nav-link {
        font-size: 0.85rem;
        padding: 6px 10px !important;
    }    
    .btn-login {
        font-size: 0.82rem;
        padding: 8px 18px;
    }

    .navbar-nav {
        gap: 0 !important;
    }
}