:root {
    --base: #6f6a64;
    --accent: #867874;
    --base-80: rgba(111, 106, 100, 0.8);
    --base-40: rgba(111, 106, 100, 0.4);

    --bg: #ffffff;
    --text: #1d1d1f;
    --muted: #6e6e73;
    --card: #f5f5f7;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #0f0f0f;
        --text: #f5f5f7;
        --muted: var(--base-80);
        --card: #1c1c1e;
    }
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Inter', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    scroll-behavior: smooth;
}

/* NAV */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    backdrop-filter: saturate(180%) blur(20px);
    background: rgba(255, 255, 255, 0.72);
    border-bottom: 1px solid var(--base-40);
    padding: 1rem 8vw;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 100;
}

@media (prefers-color-scheme: dark) {
    nav {
        background: rgba(15, 15, 15, 0.72);
    }
}

nav a {
    text-decoration: none;
    color: var(--text);
    font-size: 0.9rem;
    margin-left: 1.5rem;
    position: relative;
}

nav a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -6px;
    width: 0;
    height: 2px;
    background: var(--text);
    transition: width 0.4s cubic-bezier(0.22, 0.61, 0.36, 1);
}

nav a:hover::after {
    width: 100%;
}

/* HERO */
header {
    min-height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 2rem;
    overflow: hidden;
}

header::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(111, 106, 100, 0.45), rgba(134, 120, 116, 0.85));
    z-index: 1;
}

header img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
}

.hero {
    position: relative;
    z-index: 2;
    max-width: 900px;
    color: #fff;
    text-shadow: 0 20px 40px rgba(0, 0, 0, 0.45);
}

.hero h1 {
    font-size: clamp(3rem, 6vw, 5rem);
    font-weight: 600;
    margin-bottom: 1rem;
    animation: heroFade 1.2s cubic-bezier(0.22, 0.61, 0.36, 1) forwards;
}

.hero p {
    max-width: 640px;
    margin: 0 auto 2rem;
    color: #e5e5e5;
    font-size: 1.15rem;
    animation: heroFade 1.2s cubic-bezier(0.22, 0.61, 0.36, 1) forwards;
    animation-delay: 0.2s;
}

@keyframes heroFade {
    from {
        opacity: 0;
        transform: translateY(40px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* BOTÓN + PESO REAL */
.btn {
    display: inline-block;
    padding: 0.9rem 2rem;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--base), var(--accent));
    color: #fff;
    text-decoration: none;
    font-size: 0.95rem;
    transition: transform 0.65s cubic-bezier(0.18, 0.89, 0.32, 1.28),
        box-shadow 0.65s cubic-bezier(0.22, 0.61, 0.36, 1), filter 0.4s ease;
    will-change: transform;
}

.btn:hover {
    transform: translateY(-8px) scale(1.07);
    box-shadow: 0 45px 90px rgba(0, 0, 0, 0.35);
    filter: brightness(1.05);
}

/* SECCIONES */
section {
    padding: 6rem 8vw;
}

/* REVEAL PESO REAL */
.reveal {
    opacity: 0;
    transform: translateY(120px) scale(0.92);
    transition: opacity 1.3s ease, transform 1.5s cubic-bezier(0.18, 0.89, 0.32, 1.15);
    will-change: transform;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0) scale(1);
}

/* Delay por columnas */
.reveal[data-delay='1'] {
    transition-delay: 0.1s;
}

.reveal[data-delay='2'] {
    transition-delay: 0.3s;
}

.reveal[data-delay='3'] {
    transition-delay: 0.5s;
}

.reveal[data-delay='4'] {
    transition-delay: 0.7s;
}

/* FEATURES */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 2rem;
}

.feature {
    background: linear-gradient(180deg, var(--card), var(--base-40));
    padding: 2.5rem;
    border-radius: 28px;
}

.feature:hover {
    transform: translateY(-14px) scale(1.04);
    box-shadow: 0 40px 80px rgba(0, 0, 0, 0.18);
}

/* GALERÍA */
.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
}

.gallery img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: 28px;
    filter: blur(14px);
    transform: translateY(140px) scale(0.9);
    transition: filter 1.2s ease, transform 1.6s cubic-bezier(0.18, 0.89, 0.32, 1.15),
        opacity 1.2s ease;
}

.gallery img.visible {
    filter: blur(0);
    transform: translateY(0) scale(1);
    opacity: 1;
}

/* CTA */
.cta {
    text-align: center;
    background: var(--card);
    border-radius: 36px;
    padding: 4rem 2rem;
}

/* FOOTER */
footer {
    padding: 2rem;
    text-align: center;
    font-size: 0.85rem;
    color: var(--base-80);
    border-top: 1px solid var(--base-40);
    background: linear-gradient(180deg, transparent, var(--base-40));
}

/* WHATSAPP */
.whatsapp {
    position: fixed;
    bottom: 32px;
    right: 32px;
    z-index: 200;
}

.whatsapp a {
    display: inline-block;
    padding: 14px 22px;
    border-radius: 999px;
    background: var(--base);
    color: #fff;
    text-decoration: none;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
    transition: transform 0.6s cubic-bezier(0.18, 0.89, 0.32, 1.15);
}

.whatsapp a:hover {
    transform: translateY(-8px) scale(1.08);
}

.center-text {
    text-align: center; /* Centers text horizontally */
}