/* Página pública de Refriclimas — colores tomados del logo */
:root {
    --rojo: #990100; --rojo-osc: #6f0100; --azul: #189ccd; --amarillo: #f7e225;
    --tinta: #1b1414; --gris: #6a6060; --linea: #ece6e6; --fondo: #faf7f6; --wa: #1faa59;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body { margin: 0; font: 17px/1.6 Lato, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; color: var(--tinta); background: #fff; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
h1, h2, h3 { font-weight: 900; line-height: 1.1; margin: 0; letter-spacing: -.01em; }
h2 { font-size: clamp(1.7rem, 4vw, 2.6rem); max-width: 22ch; }
h3 { font-size: 1.25rem; }
p { margin: 0; }
.sobre { font-size: .8rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; margin-bottom: .9rem; color: var(--amarillo); }
.sobre.azul { color: var(--azul); }

.btn { display: inline-block; padding: .75rem 1.3rem; border-radius: 999px; font-weight: 700; text-decoration: none; white-space: nowrap; border: 2px solid transparent; transition: transform .15s, box-shadow .15s, background .15s; }
.btn:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(0, 0, 0, .18); }
.btn.grande { padding: .95rem 1.7rem; font-size: 1.05rem; }
.btn.wa { background: var(--wa); color: #fff; }
.btn.amarillo { background: var(--amarillo); color: var(--tinta); }
.btn.rojo { background: var(--rojo); color: #fff; }
.btn.blanco { background: #fff; color: var(--tinta); }
.btn.linea { border-color: rgba(255, 255, 255, .7); color: #fff; }
.btn.linea:hover { background: #fff; color: var(--rojo); }

/* Barra superior */
.top { position: sticky; top: 0; z-index: 20; display: flex; align-items: center; gap: 1.5rem; padding: .5rem clamp(16px, 4vw, 48px); background: var(--rojo); color: #fff; box-shadow: 0 1px 0 rgba(255, 255, 255, .12); }
.marca { display: flex; align-items: center; gap: .6rem; text-decoration: none; font-weight: 900; letter-spacing: .02em; line-height: 1; }
.marca img { width: 46px; height: 44px; object-fit: cover; object-position: top; }
.marca small { display: block; font-size: .6rem; font-weight: 700; letter-spacing: .2em; margin-top: .25rem; opacity: .85; }
.top nav { display: flex; gap: 1.6rem; margin-left: auto; }
.top nav a { text-decoration: none; font-weight: 700; font-size: .95rem; opacity: .9; }
.top nav a:hover { opacity: 1; text-decoration: underline; text-decoration-color: var(--amarillo); text-underline-offset: 6px; text-decoration-thickness: 2px; }
.top .btn { padding: .5rem 1.1rem; }

/* Hero */
.hero { position: relative; overflow: hidden; background: var(--rojo); color: #fff; padding: clamp(2.5rem, 7vw, 5.5rem) clamp(16px, 4vw, 48px) clamp(6rem, 12vw, 9rem); }
.hero-in { position: relative; z-index: 2; max-width: 1180px; margin: 0 auto; display: grid; grid-template-columns: 1.15fr .85fr; gap: 2rem; align-items: center; }
.hero h1 { font-size: clamp(2.6rem, 7.5vw, 5.2rem); letter-spacing: -.03em; }
.hero h1 em { font-style: normal; color: var(--amarillo); }
.lead { font-size: clamp(1.05rem, 2vw, 1.3rem); max-width: 34ch; margin: 1.3rem 0 1.9rem; opacity: .95; }
.cta { display: flex; gap: .8rem; flex-wrap: wrap; }
.chips { list-style: none; display: flex; flex-wrap: wrap; gap: .5rem; padding: 0; margin: 2.2rem 0 0; }
.chips li { padding: .3rem .9rem; border: 1px solid rgba(255, 255, 255, .35); border-radius: 999px; font-size: .88rem; font-weight: 700; }
.hero-logo { width: min(100%, 400px); margin: 0 auto; animation: flota 7s ease-in-out infinite; }
.ola { position: absolute; left: 0; right: 0; bottom: -1px; width: 100%; height: clamp(50px, 9vw, 120px); z-index: 1; }
/* el resplandor va encima de todo en modo "screen" para que no se note el borde de la imagen del logo */
.sol { z-index: 3; pointer-events: none; mix-blend-mode: screen; position: absolute; top: -180px; right: -140px; width: 520px; height: 520px; border-radius: 50%; background: radial-gradient(circle, rgba(247, 226, 37, .5), rgba(247, 226, 37, 0) 68%); animation: late 6s ease-in-out infinite; }
.copo { position: absolute; z-index: 1; color: var(--azul); opacity: .5; animation: cae 14s linear infinite; }
.copo.c1 { left: 6%; top: -10%; font-size: 2.2rem; }
.copo.c2 { left: 44%; top: -10%; font-size: 1.4rem; animation-duration: 18s; animation-delay: -6s; }
.copo.c3 { left: 78%; top: -10%; font-size: 1.8rem; animation-duration: 16s; animation-delay: -11s; }
@keyframes flota { 50% { transform: translateY(-12px); } }
@keyframes late { 50% { transform: scale(1.12); opacity: .8; } }
@keyframes cae { to { transform: translateY(115vh) rotate(360deg); } }

/* Secciones */
.sec { max-width: 1180px; margin: 0 auto; padding: clamp(3.5rem, 8vw, 6rem) clamp(16px, 4vw, 48px); }
.sec.gris { max-width: none; background: var(--fondo); }
.sec.gris > * { max-width: 1084px; margin-left: auto; margin-right: auto; }
.sec.gris > h2 { max-width: 1084px; }

.cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.1rem; margin-top: 2.5rem; }
.card { display: flex; flex-direction: column; gap: .7rem; padding: 1.6rem 1.4rem; border: 1px solid var(--linea); border-top: 5px solid var(--rojo); border-radius: 16px; background: #fff; transition: transform .2s, box-shadow .2s; }
.card:nth-child(2) { border-top-color: var(--azul); } .card:nth-child(3) { border-top-color: var(--amarillo); } .card:nth-child(4) { border-top-color: var(--azul); }
.card:hover { transform: translateY(-6px); box-shadow: 0 18px 40px rgba(153, 1, 0, .12); }
.card svg { width: 44px; height: 44px; color: var(--rojo); }
.card p { color: var(--gris); font-size: .98rem; flex: 1; }
.card a { font-weight: 700; color: var(--rojo); text-decoration: none; }
.card a:hover { text-decoration: underline; }

.franja { background: var(--azul); color: #fff; padding: clamp(3rem, 7vw, 5rem) clamp(16px, 4vw, 48px); }
.franja-in { max-width: 1000px; margin: 0 auto; display: grid; grid-template-columns: auto 1fr; gap: clamp(1.5rem, 5vw, 4rem); align-items: center; }
.seis { font-size: clamp(7rem, 20vw, 13rem); font-weight: 900; line-height: .8; color: var(--amarillo); text-align: center; text-shadow: 0 6px 0 rgba(0, 0, 0, .12); }
.seis small { display: block; font-size: 1.3rem; letter-spacing: .3em; text-transform: uppercase; color: #fff; margin-top: 1rem; text-shadow: none; }
.franja h2 { margin-bottom: 1rem; }
.franja p { max-width: 52ch; margin-bottom: 1.6rem; font-size: 1.08rem; }

.duo { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; margin-top: 2.5rem; }
.equipo { position: relative; padding: 2.2rem 2rem; border-radius: 20px; background: var(--fondo); border: 1px solid var(--linea); overflow: hidden; }
.equipo::after { content: "❄"; position: absolute; right: -18px; bottom: -40px; font-size: 11rem; line-height: 1; color: var(--azul); opacity: .1; }
.equipo.usado::after { content: "☀"; color: #e0a800; opacity: .16; }
.etq { display: inline-block; padding: .2rem .8rem; border-radius: 999px; background: var(--azul); color: #fff; font-size: .78rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; margin-bottom: 1rem; }
.usado .etq { background: var(--amarillo); color: var(--tinta); }
.equipo p { color: var(--gris); margin: .8rem 0 1.5rem; max-width: 40ch; position: relative; z-index: 1; }
.equipo .btn { position: relative; z-index: 1; }

.pasos { list-style: none; padding: 0; margin-top: 2.5rem; margin-bottom: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.4rem; }
.pasos b { display: grid; place-items: center; width: 46px; height: 46px; border-radius: 50%; background: var(--rojo); color: #fff; font-size: 1.2rem; font-weight: 900; margin-bottom: 1rem; }
.pasos li:nth-child(even) b { background: var(--azul); }
.pasos p { color: var(--gris); font-size: .98rem; margin-top: .5rem; }

.contacto { background: var(--rojo); color: #fff; text-align: center; padding: clamp(3.5rem, 8vw, 6rem) clamp(16px, 4vw, 48px); }
.contacto-in { max-width: 760px; margin: 0 auto; }
.contacto h2 { max-width: none; }
.contacto p { margin: 1rem 0 2rem; font-size: 1.15rem; opacity: .95; }
.datos { list-style: none; padding: 2rem 0 0; margin: 2.5rem 0 0; border-top: 1px solid rgba(255, 255, 255, .25); display: flex; justify-content: center; gap: 1rem 3rem; flex-wrap: wrap; }
.datos span { display: block; font-size: .72rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; color: var(--amarillo); margin-bottom: .2rem; }
.datos a { text-decoration: none; font-weight: 700; } .datos a:hover { text-decoration: underline; }

.pie { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; padding: 1.2rem clamp(16px, 4vw, 48px); background: var(--rojo-osc); color: rgba(255, 255, 255, .8); font-size: .88rem; }
.pie a { color: #fff; }

/* Aparición al hacer scroll (el contenido existe aunque el JS no corra: ver el respaldo en index.php) */
.aparece { opacity: 0; transform: translateY(22px); transition: opacity .6s ease, transform .6s ease; }
.aparece.visible { opacity: 1; transform: none; }
.cards .aparece:nth-child(2), .pasos .aparece:nth-child(2), .duo .aparece:nth-child(2) { transition-delay: .08s; }
.cards .aparece:nth-child(3), .pasos .aparece:nth-child(3) { transition-delay: .16s; }
.cards .aparece:nth-child(4), .pasos .aparece:nth-child(4) { transition-delay: .24s; }
.card.aparece.visible:hover { transform: translateY(-6px); }

@media (max-width: 900px) {
    .top nav { display: none; } .top .btn { margin-left: auto; }
    .hero-in { grid-template-columns: 1fr; text-align: center; }
    .hero-logo { order: -1; width: min(60%, 240px); }
    .lead { margin-left: auto; margin-right: auto; } .cta, .chips { justify-content: center; }
    .cards, .pasos { grid-template-columns: 1fr 1fr; }
    .franja-in { grid-template-columns: 1fr; text-align: center; } .franja p { margin-left: auto; margin-right: auto; }
}
@media (max-width: 560px) {
    .cards, .pasos, .duo { grid-template-columns: 1fr; }
    .btn.grande { width: 100%; text-align: center; }
    .pie { justify-content: center; text-align: center; }
}