/* ============================================
   COMPONENTES — UI reutilizable
   ============================================ */

/* --- Preloader --- */
.preloader {
    position: fixed;
    inset: 0;
    background: var(--color-bg-primary);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-xl);
    z-index: 9999;
    transition: opacity 0.6s ease, visibility 0.6s ease;
}

.preloader.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.preloader__ring {
    position: relative;
    width: 140px;
    height: 140px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.preloader__ring::before,
.preloader__ring::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 50%;
    border: 3px solid transparent;
}

.preloader__ring::before {
    border-top-color: var(--color-blue);
    border-right-color: var(--color-blue);
    animation: spin-slow 1s linear infinite;
}

.preloader__ring::after {
    inset: 8px;
    border-bottom-color: var(--color-yellow);
    border-left-color: var(--color-yellow);
    animation: spin-slow 1.5s linear infinite reverse;
}

.preloader__logo {
    width: 80px;
    height: 80px;
    object-fit: contain;
    border-radius: 50%;
    animation: float 2s ease-in-out infinite;
}

.preloader__bar {
    width: 200px;
    height: 3px;
    background: rgba(255,255,255,0.1);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.preloader__bar span {
    display: block;
    height: 100%;
    background: var(--gradient-accent);
    border-radius: var(--radius-full);
    animation: preloader-bar 1.8s ease forwards;
}

/* --- Navbar --- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--navbar-height);
    z-index: 1000;
    transition: background var(--transition-normal), box-shadow var(--transition-normal), backdrop-filter var(--transition-normal);
}

.navbar.scrolled {
    background: rgba(10, 14, 26, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 4px 30px rgba(0,0,0,0.4), 0 0 0 1px rgba(27,117,187,0.1);
}

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

.navbar__brand {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    transition: transform var(--transition-bounce);
}

.navbar__brand:hover {
    transform: scale(1.05);
}

.navbar__logo {
    width: 52px;
    height: 52px;
    object-fit: contain;
    border-radius: 50%;
    filter: drop-shadow(0 0 10px rgba(27,117,187,0.5));
    transition: filter var(--transition-normal);
}

.navbar__brand:hover .navbar__logo {
    filter: drop-shadow(0 0 20px rgba(255,215,0,0.6));
}

.navbar__brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.navbar__title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--color-yellow);
    letter-spacing: 0.05em;
}

.navbar__subtitle {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    letter-spacing: 0.2em;
    text-transform: uppercase;
}

.navbar__list {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.navbar__link {
    position: relative;
    padding: var(--space-sm) var(--space-md);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    border-radius: var(--radius-sm);
    transition: color var(--transition-fast), background var(--transition-fast);
    overflow: hidden;
}

.navbar__link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-accent);
    transition: width var(--transition-normal), left var(--transition-normal);
    border-radius: var(--radius-full);
}

.navbar__link:hover,
.navbar__link--active {
    color: var(--color-white);
}

.navbar__link:hover::before,
.navbar__link--active::before {
    width: 80%;
    left: 10%;
}

.navbar__link--active {
    background: rgba(27,117,187,0.15);
}

.navbar__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-sm);
    z-index: 1001;
}

.navbar__toggle span {
    display: block;
    width: 26px;
    height: 2px;
    background: var(--color-white);
    border-radius: var(--radius-full);
    transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.navbar__toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.navbar__toggle.active span:nth-child(2) { opacity: 0; }
.navbar__toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* --- Botones --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    border-radius: var(--radius-md);
    transition: transform var(--transition-bounce), box-shadow var(--transition-normal);
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transform: translateX(-100%);
    transition: transform 0.5s ease;
}

.btn:hover::after {
    transform: translateX(100%);
}

.btn--primary {
    background: var(--gradient-primary);
    color: var(--color-white);
    box-shadow: var(--shadow-glow-blue);
}

.btn--primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 0 40px rgba(27,117,187,0.6);
}

.btn--accent {
    background: var(--gradient-accent);
    color: var(--color-bg-primary);
    box-shadow: var(--shadow-glow-yellow);
}

.btn--accent:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 0 40px rgba(255,215,0,0.5);
}

.btn--outline {
    background: transparent;
    color: var(--color-white);
    border: 2px solid rgba(255,255,255,0.3);
    backdrop-filter: blur(10px);
}

.btn--outline:hover {
    border-color: var(--color-yellow);
    color: var(--color-yellow);
    transform: translateY(-3px);
}

.btn svg {
    width: 18px;
    height: 18px;
    transition: transform var(--transition-bounce);
}

.btn:hover svg {
    transform: translateX(4px);
}

/* --- Cards 3D --- */
.card-3d {
    perspective: var(--perspective);
    transform-style: preserve-3d;
}

.card-3d__inner {
    background: var(--color-bg-card);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--shadow-3d);
    transition: transform 0.1s ease, box-shadow var(--transition-normal);
    transform-style: preserve-3d;
    position: relative;
    overflow: hidden;
}

.card-3d__inner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-card);
    opacity: 0;
    transition: opacity var(--transition-normal);
    border-radius: inherit;
}

.card-3d:hover .card-3d__inner::before {
    opacity: 1;
}

.card-3d__inner::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-blue), var(--color-yellow), transparent);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.card-3d:hover .card-3d__inner::after {
    opacity: 1;
}

.card-3d__glow {
    position: absolute;
    inset: -1px;
    border-radius: inherit;
    background: linear-gradient(135deg, var(--color-blue), var(--color-yellow));
    opacity: 0;
    transition: opacity var(--transition-normal);
    z-index: -1;
    filter: blur(20px);
}

.card-3d:hover .card-3d__glow {
    opacity: 0.3;
}

/* --- Badge --- */
.badge {
    display: inline-block;
    padding: 3px 10px;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    border-radius: var(--radius-full);
}

.badge--blue   { background: rgba(27,117,187,0.2); color: var(--color-blue-light); border: 1px solid rgba(27,117,187,0.3); }
.badge--yellow { background: rgba(255,215,0,0.15); color: var(--color-yellow); border: 1px solid rgba(255,215,0,0.3); }
.badge--green  { background: rgba(46,139,60,0.2); color: var(--color-green-light); border: 1px solid rgba(46,139,60,0.3); }

/* --- Scroll to top --- */
.scroll-top {
    position: fixed;
    bottom: var(--space-xl);
    right: var(--space-xl);
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    box-shadow: var(--shadow-glow-blue);
    z-index: 900;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: opacity var(--transition-normal), visibility var(--transition-normal), transform var(--transition-bounce);
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.scroll-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 0 30px rgba(27,117,187,0.7);
}

.scroll-top svg {
    width: 22px;
    height: 22px;
}

/* --- Social buttons --- */
.social-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    background: var(--color-bg-glass);
    border: 1px solid rgba(255,255,255,0.1);
    color: var(--color-text-secondary);
    transition: transform var(--transition-bounce), background var(--transition-normal), color var(--transition-normal), box-shadow var(--transition-normal);
}

.social-btn:hover {
    transform: translateY(-4px) scale(1.1);
    background: var(--color-blue);
    color: var(--color-white);
    box-shadow: var(--shadow-glow-blue);
}

.social-btn svg {
    width: 20px;
    height: 20px;
}

/* --- Footer --- */
.footer {
    position: relative;
    background: var(--color-bg-secondary);
    border-top: 1px solid rgba(255,255,255,0.05);
    padding: var(--space-4xl) 0 var(--space-xl);
    overflow: hidden;
}

.footer__glow {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-blue), var(--color-yellow), transparent);
}

.footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1.5fr 1fr;
    gap: var(--space-3xl);
    margin-bottom: var(--space-3xl);
}

.footer__logo {
    width: 80px;
    height: 80px;
    object-fit: contain;
    border-radius: 50%;
    margin-bottom: var(--space-md);
    filter: drop-shadow(0 0 15px rgba(27,117,187,0.4));
}

.footer__title {
    font-size: 1rem;
    color: var(--color-yellow);
    margin-bottom: var(--space-sm);
}

.footer__desc {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.footer__heading {
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-white);
    margin-bottom: var(--space-lg);
}

.footer__links ul,
.footer__contact ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer__links a {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.footer__links a:hover {
    color: var(--color-yellow);
    padding-left: var(--space-sm);
}

.footer__contact li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.footer__contact svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    margin-top: 3px;
    color: var(--color-blue-light);
}

.footer__contact a:hover {
    color: var(--color-yellow);
}

.footer__social-links {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.footer__bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--space-xl);
    border-top: 1px solid rgba(255,255,255,0.05);
    font-size: 0.8rem;
    color: var(--color-text-muted);
    flex-wrap: wrap;
    gap: var(--space-md);
}

.footer__bottom-links {
    display: flex;
    gap: var(--space-lg);
}

.footer__bottom-links a:hover {
    color: var(--color-yellow);
}

/* --- Formulario --- */
.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.form-group label {
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-text-secondary);
}

.form-control {
    width: 100%;
    padding: var(--space-md) var(--space-lg);
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-family: var(--font-primary);
    font-size: 0.95rem;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
    outline: none;
}

.form-control:focus {
    border-color: var(--color-blue);
    background: rgba(27,117,187,0.08);
    box-shadow: 0 0 0 3px rgba(27,117,187,0.2);
}

.form-control::placeholder {
    color: var(--color-text-muted);
}

textarea.form-control {
    resize: vertical;
    min-height: 140px;
}

/* --- Responsive componentes --- */
@media (max-width: 1024px) {
    .footer__grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .navbar__toggle {
        display: flex;
    }

    .navbar__nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background: rgba(10, 14, 26, 0.98);
        backdrop-filter: blur(30px);
        padding: calc(var(--navbar-height) + var(--space-xl)) var(--space-xl) var(--space-xl);
        transition: right var(--transition-normal);
        border-left: 1px solid rgba(27,117,187,0.2);
    }

    .navbar__nav.open {
        right: 0;
    }

    .navbar__list {
        flex-direction: column;
        align-items: stretch;
        gap: var(--space-sm);
    }

    .navbar__link {
        padding: var(--space-md);
        font-size: 1rem;
        border-radius: var(--radius-md);
    }

    .footer__grid {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }

    .footer__bottom {
        flex-direction: column;
        text-align: center;
    }
}