/* ============================================
   YIA | COMPONENTES
   Header, Navbar, Footer, Botones, Logo
   ============================================ */

/* === BOTONES === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--sp-2);
    padding: var(--sp-4) var(--sp-6);
    font-size: var(--fs-base);
    font-weight: var(--fw-semibold);
    border-radius: var(--radio-full);
    cursor: pointer;
    transition: all var(--transicion-rapida);
    border: 2px solid transparent;
    text-align: center;
    white-space: nowrap;
    line-height: 1;
    position: relative;
    overflow: hidden;
}

/* Botón primario: gradiente azul → teal del logo */
.btn-primary {
    background: var(--gradiente-yia);
    color: var(--color-blanco);
    border-color: transparent;
    box-shadow: 0 4px 14px rgba(9, 124, 145, 0.35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(9, 124, 145, 0.5), 0 0 20px rgba(9, 124, 145, 0.3);
    filter: brightness(1.1);
}

/* Botón secundario: borde blanco translúcido */
.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--color-blanco);
    border-color: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: var(--color-blanco);
    color: var(--color-negro);
    border-color: var(--color-blanco);
    transform: translateY(-2px);
}

/* Botón outline: borde azul */
.btn-outline {
    background: transparent;
    color: var(--color-azul-claro);
    border-color: var(--color-azul);
}

.btn-outline:hover {
    background: var(--color-azul);
    color: var(--color-blanco);
    transform: translateY(-2px);
    box-shadow: var(--sombra-azul);
}

.btn-sm {
    padding: var(--sp-3) var(--sp-5);
    font-size: var(--fs-sm);
}

.btn-lg {
    padding: var(--sp-5) var(--sp-7);
    font-size: var(--fs-md);
}

.btn-icon::after {
    content: '→';
    font-weight: var(--fw-bold);
    transition: transform var(--transicion-rapida);
}

.btn-icon:hover::after {
    transform: translateX(4px);
}

/* === HEADER === */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--altura-header);
    background: rgba(3, 10, 26, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-borde-suave);
    z-index: var(--z-header);
    transition: all var(--transicion-media);
}

.header.scrolled {
    background: rgba(3, 10, 26, 0.95);
    box-shadow: var(--sombra-md);
    border-bottom-color: var(--color-borde);
}

.header-inner {
    max-width: var(--container-max);
    margin: 0 auto;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--container-padding);
    gap: var(--sp-5);
}

/* === LOGO === */
.logo {
    display: flex;
    align-items: center;
    gap: var(--sp-3);
    color: var(--color-blanco);
    z-index: 2;
    text-decoration: none;
    transition: opacity var(--transicion-rapida);
}

.logo:hover {
    opacity: 0.85;
}

.logo-img {
    height: 44px;
    width: auto;
    display: block;
    object-fit: contain;
    filter: drop-shadow(0 2px 8px rgba(9, 124, 145, 0.25));
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
    border-left: 1px solid var(--color-borde-suave);
    padding-left: var(--sp-3);
}

.logo-text .logo-main {
    color: var(--color-blanco);
    font-size: var(--fs-md);
    font-weight: var(--fw-black);
    letter-spacing: 0.02em;
}

.logo-text .logo-sub {
    font-size: 0.65rem;
    font-weight: var(--fw-semibold);
    color: var(--color-cyan-claro);
    letter-spacing: 0.18em;
    text-transform: uppercase;
    white-space: nowrap;
}

/* Logo versión footer (más grande) */
.logo-footer .logo-img {
    height: 56px;
}

.logo-footer .logo-text .logo-sub {
    font-size: 0.7rem;
}

/* Responsive: ocultar tagline en móvil */
@media (max-width: 480px) {
    .logo-text {
        display: none;
    }

    .logo-img {
        height: 38px;
    }
}

/* === NAVBAR === */
.navbar-list {
    display: flex;
    gap: var(--sp-5);
    align-items: center;
}

.navbar-link {
    font-size: var(--fs-sm);
    font-weight: var(--fw-medium);
    color: var(--color-texto-suave);
    padding: var(--sp-2) 0;
    position: relative;
    transition: color var(--transicion-rapida);
}

.navbar-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradiente-yia);
    transition: width var(--transicion-rapida);
}

.navbar-link:hover,
.navbar-link.active {
    color: var(--color-blanco);
}

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

/* === MENÚ TOGGLE (MOBILE) === */
.menu-toggle {
    display: none;
    width: 40px;
    height: 40px;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    z-index: 3;
}

.menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-blanco);
    transition: all var(--transicion-rapida);
    border-radius: 2px;
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* === FOOTER === */
.footer {
    background: var(--color-negro-suave);
    border-top: 1px solid var(--color-borde-suave);
    padding: var(--sp-9) 0 var(--sp-5);
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--gradiente-yia);
    opacity: 0.5;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: var(--sp-7);
    margin-bottom: var(--sp-8);
}

.footer-brand .logo {
    margin-bottom: var(--sp-4);
}

.footer-tagline {
    font-size: var(--fs-sm);
    color: var(--color-texto-suave);
    max-width: 320px;
    line-height: 1.6;
    margin-bottom: var(--sp-5);
}

.footer-socials {
    display: flex;
    gap: var(--sp-3);
}

.footer-socials a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-elevado);
    border: 1px solid var(--color-borde-suave);
    border-radius: var(--radio-md);
    color: var(--color-azul-claro);
    transition: all var(--transicion-rapida);
}

.footer-socials a:hover {
    background: var(--gradiente-yia);
    color: var(--color-blanco);
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: var(--sombra-azul);
}

.footer-socials svg {
    width: 18px;
    height: 18px;
}

.footer-column h4 {
    color: var(--color-teal-claro);
    font-size: var(--fs-sm);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--sp-5);
    font-weight: var(--fw-semibold);
}

.footer-column ul li {
    margin-bottom: var(--sp-3);
}

.footer-column ul a,
.footer-contact-item {
    font-size: var(--fs-sm);
    color: var(--color-texto-suave);
    transition: color var(--transicion-rapida);
    display: flex;
    align-items: flex-start;
    gap: var(--sp-2);
}

.footer-column ul a:hover {
    color: var(--color-azul-claro);
}

.footer-contact-item {
    margin-bottom: var(--sp-3);
}

.footer-contact-item strong {
    color: var(--color-blanco);
    font-weight: var(--fw-semibold);
}

.footer-bottom {
    padding-top: var(--sp-5);
    border-top: 1px solid var(--color-borde-suave);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--sp-4);
    flex-wrap: wrap;
}

.footer-copyright {
    font-size: var(--fs-xs);
    color: var(--color-gris-500);
}

.footer-legal {
    display: flex;
    gap: var(--sp-5);
}

.footer-legal a {
    font-size: var(--fs-xs);
    color: var(--color-gris-500);
    transition: color var(--transicion-rapida);
}

.footer-legal a:hover {
    color: var(--color-azul-claro);
}

/* === WHATSAPP FLOATING === */
.whatsapp-float {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 56px;
    height: 56px;
    background: #25D366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    box-shadow: 0 8px 24px rgba(37, 211, 102, 0.4);
    z-index: 90;
    transition: all var(--transicion-rapida);
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 12px 32px rgba(37, 211, 102, 0.6);
}

.whatsapp-float svg {
    width: 28px;
    height: 28px;
}