/* ==========================================================================
   SOLVIAN GLOBAL ADVISORY - SISTEMA VISUAL PRINCIPAL
   Estética: Institucional, Editorial, Sobria, Premium
   ========================================================================== */

:root {
    --bg-primary: #F7F8FA;
    --bg-white: #FFFFFF;
    --text-main: #111827;
    --text-secondary: #5B6472;
    --blue-institutional: #173B67;
    --blue-hover: #2563EB;
    --border-color: #DDE2E8;
    --accent-gold: #C8A96B;
    --accent-gold-hover: #b09355;
    
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-serif: 'Source Serif 4', Georgia, serif;
    
    --container-max: 1240px;
    --transition-smooth: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-main);
    line-height: 1.7;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
}

/* AVISO LEGAL GOOGLE ADS (TOP BAR) */
.ads-compliance-banner {
    background-color: var(--blue-institutional);
    color: var(--bg-white);
    font-size: 0.8125rem;
    padding: 0.65rem 1.5rem;
    text-align: center;
    border-bottom: 2px solid var(--accent-gold);
    font-weight: 500;
    letter-spacing: 0.01em;
    position: relative;
    z-index: 1001;
}

.ads-compliance-banner strong {
    color: var(--accent-gold);
    font-weight: 700;
}

/* HEADER Y NAVEGACIÓN */
.site-header {
    background-color: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition-smooth);
}

.nav-wrapper {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand-logo {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--blue-institutional);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.brand-logo span {
    color: var(--accent-gold);
}

.nav-links {
    display: flex;
    gap: 1.75rem;
    list-style: none;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.925rem;
    transition: var(--transition-smooth);
}

.nav-links a:hover, .nav-links a.active {
    color: var(--blue-institutional);
}

.btn-nav-action {
    background-color: var(--blue-institutional);
    color: var(--bg-white) !important;
    padding: 0.55rem 1.25rem;
    border-radius: 4px;
    font-weight: 600;
    transition: var(--transition-smooth);
}

.btn-nav-action:hover {
    background-color: var(--blue-hover) !important;
}

/* MENÚ MÓVIL TOGGLE */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--blue-institutional);
}

/* BOTONES GLOBALES */
.btn-primary {
    background-color: var(--blue-institutional);
    color: var(--bg-white);
    padding: 0.85rem 1.75rem;
    border-radius: 4px;
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
    transition: var(--transition-smooth);
    border: 1px solid transparent;
}

.btn-primary:hover {
    background-color: var(--blue-hover);
}

.btn-secondary {
    background-color: transparent;
    color: var(--blue-institutional);
    padding: 0.85rem 1.75rem;
    border-radius: 4px;
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
    transition: var(--transition-smooth);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--blue-institutional);
    background-color: rgba(23, 59, 103, 0.03);
}

/* COMPOSICIÓN EDITORIAL Y SECCIONES */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 5rem 2rem;
}

/* ANIMACIONES DE ENTRADA */
.reveal-on-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.reveal-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* FOOTER INSTITUCIONAL */
.site-footer {
    background-color: var(--blue-institutional);
    color: var(--bg-white);
    padding: 4.5rem 2rem 2rem 2rem;
    border-top: 4px solid var(--accent-gold);
}

.footer-grid {
    max-width: var(--container-max);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-col h4 {
    color: var(--accent-gold);
    font-family: var(--font-serif);
    font-size: 1.2rem;
    margin-bottom: 1.25rem;
    font-weight: 600;
}

.footer-col p {
    color: #cbd5e1;
    font-size: 0.95rem;
    line-height: 1.7;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 0.75rem;
}

.footer-col ul li a {
    color: #cbd5e1;
    text-decoration: none;
    transition: var(--transition-smooth);
    font-size: 0.925rem;
}

.footer-col ul li a:hover {
    color: var(--bg-white);
    padding-left: 4px;
}

.footer-bottom {
    max-width: var(--container-max);
    margin: 0 auto;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    text-align: center;
    font-size: 0.85rem;
    color: #94a3b8;
}

/* BANNER DE COOKIES */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: var(--bg-white);
    border-top: 1px solid var(--border-color);
    box-shadow: 0 -10px 25px rgba(0,0,0,0.05);
    padding: 1.25rem 2rem;
    z-index: 2000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

.cookie-content {
    font-size: 0.9rem;
    color: var(--text-secondary);
    max-width: 900px;
}

.cookie-content a {
    color: var(--blue-institutional);
    text-decoration: underline;
}

.cookie-actions {
    display: flex;
    gap: 1rem;
    flex-shrink: 0;
}

.btn-cookie-accept {
    background-color: var(--blue-institutional);
    color: var(--bg-white);
    border: none;
    padding: 0.6rem 1.25rem;
    border-radius: 4px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.btn-cookie-accept:hover {
    background-color: var(--blue-hover);
}

.btn-cookie-decline {
    background-color: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    padding: 0.6rem 1.25rem;
    border-radius: 4px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.btn-cookie-decline:hover {
    border-color: var(--text-main);
    color: var(--text-main);
}

/* RESPONSIVE DESIGN */
@media (max-width: 968px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--bg-white);
        flex-direction: column;
        padding: 2rem;
        border-bottom: 1px solid var(--border-color);
        box-shadow: 0 10px 15px rgba(0,0,0,0.05);
    }
    .nav-links.active {
        display: flex;
    }
    .mobile-menu-btn {
        display: block;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .cookie-banner {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
}