:root {
    --primary: #0f172a;
    --accent: #dc2626;
    --accent-hover: #b91c1c;
    --bg: #ffffff;
    --card-bg: #f8fafc;
    --border: #e2e8f0;
    --text: #334155;
    --text-dark: #0f172a;
    --text-muted: #64748b;

    /* Breakpoints (para consistencia — no se aplican como CSS vars) */
    --bp-mobile: 480px;
    --bp-tablet: 768px;
    --bp-desktop: 1024px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

/* Compensa el menú sticky (~60-70px) al saltar a cualquier ancla #id.
   Sin esto, el título de la sección queda tapado detrás del menú. */
[id] {
    scroll-margin-top: 90px;
}

body {
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.5;
    overflow-x: hidden;
}

img, svg {
    max-width: 100%;
    height: auto;
}

a { color: inherit; }

/* ==============================
   Header / Menú compartido
   ============================== */
.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-link {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
}

/* Botón hamburguesa (visible solo en móvil) */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    color: #0f172a;
}

.menu-toggle svg {
    width: 28px;
    height: 28px;
}

/* ==============================
   TABLET (≤ 1024px)
   ============================== */
@media (max-width: 1024px) {
    .nav-container { padding: 0 1rem; }
}

/* ==============================
   MÓVIL (≤ 768px)
   ============================== */
@media (max-width: 768px) {
    body { font-size: 15px; }

    /* Menú colapsable */
    .menu-toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    /* La lista de nav pasa a ocupar todo el ancho y se colapsa */
    .nav-list {
        display: none !important;
        width: 100%;
        flex-direction: column !important;
        justify-content: flex-start !important;
        gap: 0 !important;
        padding: 12px 0 !important;
        margin-top: 12px !important;
        border-top: 1px solid var(--border);
        order: 3;
    }
    .nav-list.is-open {
        display: flex !important;
    }
    .nav-list li {
        width: 100%;
    }
    .nav-list li a.menu-link {
        padding: 12px 16px !important;
        border-bottom: 1px solid #f1f5f9;
        justify-content: flex-start !important;
    }
    .nav-list li:last-child a.menu-link {
        border-bottom: none;
        margin-top: 6px;
    }
}

/* ==============================
   MÓVIL PEQUEÑO (≤ 480px)
   ============================== */
@media (max-width: 480px) {
    body { font-size: 14.5px; }
    .logo-link { font-size: 1.15rem; }
}