/* ============================================
   SITE HEADER - Componente compartido
   Variables globales en: css/app.css
   ============================================ */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-dropdown);
    background: var(--color-primary);
    padding: 0.5rem 0;
}

.header-inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.header-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-white);
}

.logo-icon-img {
    width: 45px;
    height: 45px;
    object-fit: contain;
}

.logo-name {
    font-size: 1.3rem;
    font-weight: 700;
    display: block;
    line-height: 1.2;
}

.logo-tagline {
    font-size: 0.8rem;
    color: var(--color-secondary);
    display: block;
}

.header-nav {
    display: flex;
    gap: 2rem;
}

.nav-item {
    color: var(--text-white);
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.5rem 0;
    position: relative;
}

.nav-item::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-secondary);
    transition: var(--transition-normal);
}

.nav-item:hover::after, .nav-item.active::after { width: 100%; }
.nav-item:hover { color: var(--color-secondary); }

/* Boton Admision */
.btn-admision-header {
    background: var(--color-accent);
    color: var(--text-white);
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition-normal);
    margin-right: 0.5rem;
}

.btn-admision-header:hover {
    background: var(--color-accent-dark);
    transform: translateY(-2px);
}

/* Boton Ingresar/Plataforma - Fondo blanco */
.btn-platform-white {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--bg-white);
    color: var(--color-primary-dark);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.85rem;
    transition: var(--transition-normal);
}

.btn-platform-white:hover {
    background: var(--border-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ============================================
   MOBILE MENU
   ============================================ */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-toggle span {
    width: 25px;
    height: 2px;
    background: var(--text-white);
}

.mobile-nav {
    display: none;
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--color-primary-dark);
    padding: 1rem;
    flex-direction: column;
    gap: 0.5rem;
    z-index: 999;
    transform: translateY(-100%);
    transition: var(--transition-normal);
}

.mobile-nav.active { transform: translateY(0); }

.mobile-nav a {
    color: var(--text-white);
    padding: 0.75rem 1rem;
    border-radius: 6px;
}

.mobile-nav a:hover { background: rgba(255,255,255,0.1); }

.mobile-btn {
    background: var(--color-secondary) !important;
    color: var(--color-primary-dark) !important;
    text-align: center;
    font-weight: 600;
    margin-top: 0.5rem;
}

.mobile-btn-admision {
    background: var(--color-accent);
    color: var(--text-white);
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    width: 100%;
    margin-bottom: 0.5rem;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    .header-nav, .header-actions { display: none; }
    .mobile-toggle { display: flex; }
    .mobile-nav { display: flex; }
}

@media (max-width: 480px) {
    .btn-admision-header {
        display: none;
    }
}