/* ==========================================================================
   SDK Sudamerik — Estilos compartidos (header, nav, footer, responsive)
   Cargado en todas las páginas. Los estilos propios de cada sección
   (hero, portafolio, formulario, etc.) viven en el <style> de cada página.
   ========================================================================== */

:root {
    --primary-dark: #10281a;
    --bg-cream: #fcf7f2;
    --bg-dark-section: #263e3f;
    --text-black: #000000;
    --white: #ffffff;
    --font-header: 'Kanit', sans-serif;
    --font-body: 'Inter', sans-serif;
    --transition: all 0.3s ease;

    /* Colores de las Verticales */
    --color-impact: #e5ddd5;
    --color-turismo: #00a99d;
    --color-mineria: #c1c1c1;
    --color-mujer: #fbbca3;
}

body {
    font-family: var(--font-body);
    color: var(--text-black);
    background-color: var(--white);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 { font-family: var(--font-header); }

/* --- HEADER --- */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 25px 0;
    transition: var(--transition);
    background-color: rgba(255, 255, 255, 0.95);
}

header.scrolled {
    padding: 15px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.header-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img { height: 60px; }

nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
    margin: 0;
    padding: 0;
}

nav ul li a {
    text-decoration: none;
    color: var(--text-black);
    font-family: var(--font-header);
    font-weight: 500;
    font-size: 13px;
}

/* BOTÓN HAMBURGUESA */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    z-index: 1100;
    padding: 10px;
    margin-right: -10px;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--text-black);
    transition: var(--transition);
}

/* --- FOOTER --- */
footer {
    background: linear-gradient(90deg, #0e251b 0%, #1e649b 100%);
    color: var(--white);
    padding: 70px 0 30px;
}

.footer-grid {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1.2fr 0.8fr 1fr 1fr;
    gap: 40px;
}

.footer-logo-main {
    width: 160px;
    margin-bottom: 20px;
    filter: brightness(0) invert(1);
}

.footer-col h5 {
    font-family: var(--font-header);
    font-size: 18px;
    margin-bottom: 20px;
    color: var(--white);
}

.footer-disclaimer {
    font-size: 10px;
    opacity: 0.7;
    text-transform: uppercase;
    line-height: 1.5;
}

.footer-col .footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 0;
    margin: 0;
}

.footer-col .footer-links li a {
    color: var(--white) !important;
    text-decoration: none;
    font-size: 14px;
    display: block;
    opacity: 0.85;
    transition: opacity 0.3s;
}

.footer-col .footer-links li a:hover { opacity: 1; }

.footer-col p {
    font-size: 14px;
    margin: 0 0 6px;
    opacity: 0.9;
}

.footer-linkedin {
    display: inline-block;
    margin-top: 10px;
    font-size: 13px;
    font-weight: 600;
    color: var(--white) !important;
    opacity: 0.85;
    text-decoration: none;
}
.footer-linkedin:hover { opacity: 1; }

.footer-col-b {
    display: flex;
    align-items: flex-start;
}

.copyright-bar {
    background-color: #f5f5f5;
    padding: 15px 0;
    text-align: center;
    font-size: 11px;
    color: #666;
}

/* --- RESPONSIVE (compartido) --- */
@media (max-width: 980px) {
    .menu-toggle { display: flex; order: 2; }
    .logo { order: 1; }

    nav ul {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: white;
        flex-direction: column;
        gap: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s ease;
        box-shadow: 0 10px 10px rgba(0,0,0,0.1);
    }

    nav ul.active { max-height: 600px; }

    nav ul li {
        width: 100%;
        text-align: center;
        border-bottom: 1px solid #eee;
    }

    nav ul li a {
        display: block;
        padding: 20px;
        font-size: 15px;
    }

    .footer-grid { grid-template-columns: 1fr; text-align: center; }
    .footer-col .footer-links { align-items: center; }
    .footer-col img { margin: 0 auto 20px; }
    .footer-col-b { justify-content: center; }
    .footer-linkedin { margin: 10px auto 0; }
}