/* ═══════════════════════════════════════════════════════
   Dra. Iris Vera — Animaciones Premium (Fase 1)
   Editorial · cálido · clínico
   ═══════════════════════════════════════════════════════
   v2 — Renombrado .is-visible → .visible para alinear con
   styles.css y main.js existentes (evita doble clase).
   ═══════════════════════════════════════════════════════ */

/* ───── Curvas globales ───── */
:root {
    --ease-soft:    cubic-bezier(0.22, 1, 0.36, 1);
    --ease-out:     cubic-bezier(0.16, 1, 0.3, 1);
    --ease-in-out:  cubic-bezier(0.65, 0, 0.35, 1);
    --dur-fast:     0.3s;
    --dur-base:     0.6s;
    --dur-slow:     0.9s;
}

/* ═══════════════════════════════════════════════════
   1. SCROLL REVEAL refinado
   Refina el .reveal existente en styles.css (no lo reemplaza).
   ═══════════════════════════════════════════════════ */
.reveal {
    transform: translateY(40px);
    transition: opacity var(--dur-slow) var(--ease-soft),
                transform var(--dur-slow) var(--ease-soft);
    will-change: opacity, transform;
}
.reveal.visible {
    transform: translateY(0);
}

/* Stagger genérico: hijos directos con delay incremental */
.stagger-container > * { transition-delay: 0s; }
.stagger-container.visible > *:nth-child(1) { transition-delay: 0.05s; }
.stagger-container.visible > *:nth-child(2) { transition-delay: 0.15s; }
.stagger-container.visible > *:nth-child(3) { transition-delay: 0.25s; }
.stagger-container.visible > *:nth-child(4) { transition-delay: 0.35s; }
.stagger-container.visible > *:nth-child(5) { transition-delay: 0.45s; }
.stagger-container.visible > *:nth-child(6) { transition-delay: 0.55s; }

/* ═══════════════════════════════════════════════════
   2. HEADER — blur progresivo + subrayado nav
   ═══════════════════════════════════════════════════ */
header {
    transition: background var(--dur-base) var(--ease-soft),
                box-shadow var(--dur-base) var(--ease-soft),
                backdrop-filter var(--dur-base) var(--ease-soft);
}
header.scrolled {
    backdrop-filter: blur(14px) saturate(1.1);
    -webkit-backdrop-filter: blur(14px) saturate(1.1);
    background: rgba(250, 248, 245, 0.78);
}

.nav-links a:not(.btn) {
    position: relative;
}
.nav-links a:not(.btn)::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -4px;
    width: 100%;
    height: 1px;
    background: var(--accent-dark);
    transform: scaleX(0);
    transform-origin: right center;
    transition: transform 0.4s var(--ease-soft);
}
.nav-links a:not(.btn):hover::after,
.nav-links a:not(.btn).is-active::after {
    transform: scaleX(1);
    transform-origin: left center;
}

/* ═══════════════════════════════════════════════════
   3. BOTONES — gradiente animado · ripple · lift
   ═══════════════════════════════════════════════════ */
.btn {
    position: relative;
    overflow: hidden;
    transition: transform 0.35s var(--ease-soft),
                box-shadow 0.35s var(--ease-soft),
                color 0.35s var(--ease-soft);
    will-change: transform;
}

/* Primary — gradiente animado al hover */
.btn-primary {
    background: linear-gradient(120deg,
        var(--accent-dark) 0%,
        var(--accent) 40%,
        var(--accent-dark) 80%);
    background-size: 200% 100%;
    background-position: 100% 0;
    transition: background-position 0.6s var(--ease-soft),
                transform 0.35s var(--ease-soft),
                box-shadow 0.35s var(--ease-soft);
}
.btn-primary:hover {
    background-position: 0 0;
    transform: translateY(-2px);
    box-shadow: 0 14px 28px -10px rgba(184, 149, 106, 0.45);
}

/* Outline — fill desde la izquierda */
.btn-outline {
    position: relative;
    z-index: 0;
}
.btn-outline::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--accent-dark);
    transform-origin: left center;
    transform: scaleX(0);
    transition: transform 0.5s var(--ease-soft);
    z-index: -1;
}
.btn-outline:hover {
    color: var(--white);
    border-color: var(--accent-dark);
}
.btn-outline:hover::before {
    transform: scaleX(1);
}

/* Ripple */
.btn .ripple {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    transform: scale(0);
    background: rgba(255, 255, 255, 0.45);
    animation: btn-ripple 0.65s var(--ease-out) forwards;
}
@keyframes btn-ripple {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* ═══════════════════════════════════════════════════
   4. HERO — entrada palabra por palabra · parallax · badge flotante
   ═══════════════════════════════════════════════════ */
.hero h1 .word {
    display: inline-block;
    opacity: 0;
    transform: translateY(40%) skewY(2deg);
    transition: opacity 0.7s var(--ease-soft),
                transform 0.7s var(--ease-soft);
}
.hero h1.is-revealed .word {
    opacity: 1;
    transform: translateY(0) skewY(0);
}
.hero h1.is-revealed .word:nth-child(1) { transition-delay: 0.05s; }
.hero h1.is-revealed .word:nth-child(2) { transition-delay: 0.20s; }
.hero h1.is-revealed .word:nth-child(3) { transition-delay: 0.35s; }
.hero h1.is-revealed .word:nth-child(4) { transition-delay: 0.50s; }

.hero-image-wrapper {
    will-change: transform;
}
.hero-image-wrapper img {
    transition: transform 0.8s var(--ease-soft);
}

.hero-badge {
    animation: badge-float 5s ease-in-out infinite;
}
@keyframes badge-float {
    0%, 100% { transform: translate(0, 0); }
    50%      { transform: translate(0, -10px); }
}
.badge-icon {
    display: inline-block;
    animation: icon-spin 12s linear infinite;
}
@keyframes icon-spin {
    to { transform: rotate(360deg); }
}

/* ═══════════════════════════════════════════════════
   5. RESULTADOS — Drag-to-compare antes/después
   ═══════════════════════════════════════════════════ */
.ba-comparison {
    position: relative;
    width: 100%;
    overflow: hidden;
    border-radius: var(--radius);
    box-shadow: 0 20px 60px -20px rgba(0, 0, 0, 0.25);
    user-select: none;
    cursor: ew-resize;
    background: #1a1a1a;
}
.ba-comparison img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    pointer-events: none;
}
.ba-after {
    position: absolute;
    inset: 0;
}
.ba-before-wrapper {
    position: absolute;
    inset: 0;
    overflow: hidden;
    width: 50%;
    will-change: width;
}
.ba-before-wrapper img {
    width: 100vw;
    max-width: none;
    height: 100%;
    object-fit: cover;
    object-position: left center;
}

/* Divisor */
.ba-divider {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--white);
    box-shadow: 0 0 18px rgba(0, 0, 0, 0.55);
    pointer-events: none;
    will-change: left;
}
.ba-handle {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: var(--white);
    box-shadow: 0 6px 22px rgba(0, 0, 0, 0.35);
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: auto;
    cursor: ew-resize;
    transition: transform 0.25s var(--ease-soft),
                box-shadow 0.25s var(--ease-soft);
}
.ba-handle:hover {
    transform: translate(-50%, -50%) scale(1.08);
    box-shadow: 0 10px 28px rgba(0, 0, 0, 0.4);
}
.ba-handle::before,
.ba-handle::after {
    content: '';
    position: absolute;
    width: 0;
    height: 0;
    border-top: 6px solid transparent;
    border-bottom: 6px solid transparent;
}
.ba-handle::before {
    border-right: 8px solid var(--accent-dark);
    left: 11px;
}
.ba-handle::after {
    border-left: 8px solid var(--accent-dark);
    right: 11px;
}

/* Labels flotantes */
.ba-label {
    position: absolute;
    top: 18px;
    padding: 6px 14px;
    background: rgba(255, 255, 255, 0.9);
    color: var(--text);
    font-family: var(--font-display);
    font-size: 0.78rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    border-radius: 999px;
    backdrop-filter: blur(8px);
    pointer-events: none;
    z-index: 2;
}
.ba-label.antes   { left: 18px; }
.ba-label.despues { right: 18px; }

/* Auto-reveal del divisor cuando entra al viewport */
.ba-comparison.auto-reveal .ba-before-wrapper {
    width: 100%;
    transition: width 1.6s var(--ease-soft);
}
.ba-comparison.auto-reveal.in-view .ba-before-wrapper {
    width: 50%;
}
.ba-comparison.auto-reveal .ba-divider {
    left: 100%;
    transition: left 1.6s var(--ease-soft);
}
.ba-comparison.auto-reveal.in-view .ba-divider {
    left: 50%;
}

/* ═══════════════════════════════════════════════════
   6. SERVICIOS — stagger + flecha que se desliza
   ═══════════════════════════════════════════════════ */
.servicios-links a {
    opacity: 0;
    transform: translateX(-20px);
    transition: opacity 0.6s var(--ease-soft),
                transform 0.6s var(--ease-soft),
                color 0.3s ease;
}
.servicios-links.visible a {
    opacity: 1;
    transform: translateX(0);
}
.servicios-links.visible a:nth-child(1) { transition-delay: 0.05s; }
.servicios-links.visible a:nth-child(2) { transition-delay: 0.15s; }
.servicios-links.visible a:nth-child(3) { transition-delay: 0.25s; }
.servicios-links.visible a:nth-child(4) { transition-delay: 0.35s; }
.servicios-links.visible a:nth-child(5) { transition-delay: 0.45s; }
.servicios-links.visible a:nth-child(6) { transition-delay: 0.55s; }

.servicios-links a span {
    display: inline-block;
    transition: transform 0.4s var(--ease-soft);
}
.servicios-links a:hover span {
    transform: translateX(8px);
}

/* ═══════════════════════════════════════════════════
   7. TESTIMONIOS (resenas.php) — stagger + hover
   ═══════════════════════════════════════════════════ */
.testimonios-grid .testimonio-card {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.7s var(--ease-soft),
                transform 0.7s var(--ease-soft),
                box-shadow 0.4s var(--ease-soft);
}
.testimonios-grid.visible .testimonio-card {
    opacity: 1;
    transform: translateY(0);
}
.testimonios-grid.visible .testimonio-card:nth-child(3n+1) { transition-delay: 0.05s; }
.testimonios-grid.visible .testimonio-card:nth-child(3n+2) { transition-delay: 0.15s; }
.testimonios-grid.visible .testimonio-card:nth-child(3n+3) { transition-delay: 0.25s; }

.testimonios-grid .testimonio-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 50px -22px rgba(0, 0, 0, 0.18);
}

/* ═══════════════════════════════════════════════════
   8. ACCESIBILIDAD — reduced motion
   ═══════════════════════════════════════════════════ */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    .reveal,
    .reveal.visible,
    .hero h1 .word,
    .hero h1.is-revealed .word,
    .servicios-links a,
    .testimonios-grid .testimonio-card {
        opacity: 1 !important;
        transform: none !important;
    }
    .hero-badge,
    .badge-icon {
        animation: none !important;
    }
}

/* ═══════════════════════════════════════════════════
   9. MOBILE — desactivar parallax pesado
   ═══════════════════════════════════════════════════ */
@media (max-width: 768px) {
    .hero-image-wrapper {
        transform: none !important;
    }
}