/* AIA Consultores y Constructores - Sistema de Diseño de Header (Senior Level) */

:root {
    --h-bg: rgba(255, 255, 255, 0.98);
    --h-text: #1e293b;
    --h-accent: #f0842c;
    --h-accent-dark: #d66f1f;
    --h-border: rgba(0, 0, 0, 0.06);
    --h-height: 95px;
    --h-height-scrolled: 85px;
    --h-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.08);
    --h-transition: all 0.5s cubic-bezier(0.23, 1, 0.32, 1);
}

/* Reset sutil */
#main-header * { box-sizing: border-box; }

#main-header {
    width: 100%;
    height: var(--h-height);
    background: var(--h-bg);
    border-bottom: 1px solid var(--h-border);
    position: fixed;
    top: 0;
    left: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    transition: var(--h-transition);
}

#main-header.scrolled {
    height: var(--h-height-scrolled);
    background: transparent;
    border-bottom: none;
    padding-top: 15px;
}

.navbar {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: var(--h-transition);
}

#main-header.scrolled .navbar {
    max-width: 920px;
    background: rgba(255, 255, 255, 0.82);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: 10px;
    padding: 10px 35px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
}

/* Logo */
.navbar-logo {
    transition: var(--h-transition);
}

.navbar-logo img {
    height: 55px;
    width: auto;
    transition: var(--h-transition);
}

#main-header.scrolled .navbar-logo {
    transform: translateX(10px);
}

#main-header.scrolled .navbar-logo img { 
    height: 40px; 
}

/* Links de Navegación */
.navbar-links ul {
    display: flex;
    list-style: none;
    gap: 35px;
    margin: 0;
    padding: 0;
    transition: var(--h-transition);
}

#main-header.scrolled .navbar-links ul {
    gap: 25px;
}

.nav-link {
    text-decoration: none;
    color: var(--h-text);
    font-size: 0.9rem;
    font-weight: 700;
    padding: 10px 0;
    position: relative;
    transition: var(--h-transition);
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav-link i {
    font-size: 0.7rem;
    transition: var(--h-transition);
}

.nav-link:hover, .nav-link.active { color: var(--h-accent); }

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--h-accent);
    transition: var(--h-transition);
}

.nav-link:hover::after, .nav-link.active::after { width: 100%; }

/* Dropdown Premium */
.dropdown { position: relative; }

.dropdown-content {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-5%) translateY(15px);
    background: #ffffff;
    min-width: 220px;
    border-radius: 14px;
    padding: 10px;
    box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.12);
    opacity: 0;
    visibility: hidden;
    transition: var(--h-transition);
    border: 1px solid var(--h-border);
}

.dropdown:hover .dropdown-content {
    opacity: 1;
    visibility: visible;
    transform: translateX(-5%) translateY(0);
}

.dropdown:hover > a i { transform: rotate(180deg); }

.dropdown-content a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    text-decoration: none;
    color: #475569;
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 10px;
    transition: var(--h-transition);
}

.dropdown-content a i {
    width: 20px;
    color: var(--h-accent);
    font-size: 0.9rem;
}

.dropdown-content a:hover {
    background: var(--h-accent-light);
    color: var(--h-accent);
    transform: translateX(5px);
}

/* Botón Iniciar Sesión */
.navbar-actions {
    transition: var(--h-transition);
}

#main-header.scrolled .navbar-actions {
    transform: translateX(-10px);
}

.btn-login {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--h-accent);
    color: white !important;
    padding: 12px 24px;
    border-radius: 10px;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 800;
    transition: var(--h-transition);
    box-shadow: 0 10px 20px -5px rgba(240, 132, 44, 0.4);
}

#main-header.scrolled .btn-login {
    padding: 8px 20px;
    font-size: 0.75rem;
}

.btn-login:hover {
    background: var(--h-accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 15px 25px -5px rgba(240, 132, 44, 0.5);
}

/* Mobile Toggle */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 10px;
}

.mobile-toggle span {
    width: 28px;
    height: 3px;
    background: var(--h-text);
    border-radius: 2px;
    transition: var(--h-transition);
}

.mobile-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(6px, 6px); }
.mobile-toggle.active span:nth-child(2) { opacity: 0; }
.mobile-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Responsive */
@media (max-width: 992px) {
    .mobile-toggle { display: flex; }

    .navbar-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        max-width: 320px;
        height: 100vh;
        background: #ffffff;
        padding: 100px 30px;
        box-shadow: -15px 0 40px rgba(0, 0, 0, 0.05);
        transition: 0.5s cubic-bezier(0.77, 0, 0.175, 1);
        overflow-y: auto;
    }

    .navbar-links.active { right: 0; }

    .navbar-links ul {
        flex-direction: column;
        gap: 15px;
    }

    .nav-link {
        font-size: 1.1rem;
        justify-content: space-between;
    }

    .dropdown-content {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        padding-left: 20px;
        display: none;
    }

    .dropdown.active .dropdown-content { display: block; }
    .dropdown.active > a i { transform: rotate(180deg); }

    .navbar-actions { display: none; }
}