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

body {
    font-family: Arial, Helvetica, sans-serif;
    background: #f5f5f5;
    color: #003b6f;
    line-height: 1.6;
    padding-top: 80px; /* por header fijo */
}

/* ================================
   PALETA
================================ */
:root {
    --azul: #005baa;
    --azul-oscuro: #003b6f;
    --celeste: #e6f2ff;
    --gris-medio: #666;
    --blanco: #fff;
}

/* ================================
   HEADER
================================ */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    background: var(--blanco);
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1200;
}

.logo img {
    height: 48px;
}

/* ================================
   MENÚ HAMBURGUESA
================================ */
#menu-toggle {
    display: none;
}

.menu-icon {
    font-size: 28px;
    cursor: pointer;
    display: block;
    z-index: 1201;
    position: relative;
}

/* ================================
   OVERLAY
================================ */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    opacity: 0;
    pointer-events: none;
    transition: 0.3s ease;
    z-index: 900;
}

#menu-toggle:checked ~ .overlay {
    opacity: 1;
    pointer-events: auto;
}

/* ================================
   SIDEBAR
================================ */
.sidebar {
    position: fixed;
    top: 0;
    right: -260px;
    width: 260px;
    height: 100vh;
    background: var(--blanco);
    box-shadow: -2px 0 6px rgba(0,0,0,0.15);
    padding: 80px 20px;
    transition: right 0.3s ease;
    z-index: 950;
}

#menu-toggle:checked ~ .sidebar {
    right: 0;
}

.sidebar ul {
    list-style: none;
}

.sidebar ul li {
    margin: 20px 0;
}

.sidebar a {
    text-decoration: none;
    color: var(--azul-oscuro);
    font-size: 18px;
    transition: 0.2s;
}

.sidebar a:hover {
    color: var(--azul);
}

/* ================================
   ESCRITORIO
================================ */
@media (min-width: 900px) {
    .menu-icon { display: none; }
    .overlay { display: none; }

    .sidebar {
        position: static;
        height: auto;
        width: auto;
        background: none;
        box-shadow: none;
        padding: 0;
    }

    .sidebar ul {
        display: flex;
        gap: 25px;
    }

    .sidebar ul li { margin: 0; }
}

/* ================================
   HERO
================================ */
.hero {
    background: linear-gradient(135deg, var(--azul), var(--azul-oscuro));
    color: var(--blanco);
    padding: 120px 20px;
    text-align: center;
}

.hero h1 {
    font-size: 42px;
    font-weight: bold;
}

.hero p {
    font-size: 20px;
    margin-top: 10px;
    opacity: 0.9;
}

.btn-primary {
    display: inline-block;
    margin-top: 20px;
    padding: 12px 25px;
    background: var(--blanco);
    color: var(--azul);
    border-radius: 6px;
    text-decoration: none;
    font-weight: bold;
    transition: 0.3s;
}

.btn-primary:hover {
    background: #dcecff;
}

/* ================================
   SECCIONES
================================ */
.section {
    padding: 60px 20px;
    text-align: center;
}

.section.alt {
    background: var(--celeste);
}

.section h2 {
    font-size: 30px;
    margin-bottom: 25px;
}

/* Tarjetas de servicios */
.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px,1fr));
    gap: 20px;
}

.card {
    background: var(--blanco);
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    font-weight: bold;
    color: var(--azul-oscuro);
    transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

/* ================================
   SECCIÓN INSTITUCIONAL
================================ */
.institucional {
    padding: 60px 20px;
    background: var(--celeste);
}

.institucional-container {
    display: flex;
    flex-direction: column-reverse;
    align-items: center;
    gap: 30px;
    max-width: 1100px;
    margin: 0 auto;
}

.institucional-text {
    max-width: 600px;
    text-align: center;
}

.institucional-text h2 {
    font-size: 32px;
    margin-bottom: 20px;
}

.institucional-text p {
    margin-bottom: 15px;
    color: var(--gris-medio);
}

.btn-secondary {
    display: inline-block;
    margin-top: 10px;
    padding: 10px 20px;
    background: var(--azul);
    color: var(--blanco);
    border-radius: 6px;
    text-decoration: none;
    font-weight: bold;
    transition: 0.3s;
}

.btn-secondary:hover {
    background: var(--azul-oscuro);
}

.institucional-img img {
    max-width: 100%;
    border-radius: 10px;
}

/* Responsivo institucional */
@media(min-width: 900px) {
    .institucional-container {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }

    .institucional-text {
        text-align: left;
    }
}

/* ================================
   FOOTER
================================ */
.footer {
    background: var(--azul-oscuro);
    color: var(--blanco);
    text-align: center;
    padding: 20px;
    margin-top: 50px;
}