/* =========================================================
   Serra Azul — parallax vertical clássico
   Cada camada (.ml) desliza em velocidade diferente.
   ========================================================= */

:root {
  --bg: #0b1020;
  --text: #f0f3ff;
  --muted: #a9b2d8;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  padding-top: 58px;            /* deixa espaço para a nav fixa */
  overflow-x: hidden;
  line-height: 1.6;
}

/* ---------- paleta por cena ---------- */
.scene {
  --cor-ceu-1: #4b9de8;
  --cor-ceu-2: #cdeaff;
  --cor-sol: #ffdf8e;
  --cor-nuvem: rgba(255, 255, 255, 0.85);
  --cor-longe: #5573a8;
  --cor-media: #334f7c;
  --cor-colina: #2c5f3f;
  --cor-bosque: #10241a;
  --brilho-sol: rgba(255, 223, 142, 0.55);
}

.scene--noite {
  --cor-ceu-1: #1a1036;
  --cor-ceu-2: #c96a4a;
  --cor-sol: #ffc987;
  --cor-nuvem: rgba(255, 170, 130, 0.6);
  --cor-longe: #3b2b5c;
  --cor-media: #241a40;
  --cor-colina: #1e3a2c;
  --cor-bosque: #0a1210;
  --brilho-sol: rgba(255, 170, 90, 0.6);
}

.scene {
  position: relative;
  height: calc(100vh - 58px);
  min-height: 560px;
}

@supports (height: 100dvh) {
  .scene { height: calc(100dvh - 58px); }
}
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(180deg, var(--cor-ceu-1), var(--cor-ceu-2));
}

/* camada base */
.ml {
  position: absolute;
  left: 0; right: 0;
  pointer-events: none;
  will-change: transform;
}

/* céu: maior que a cena, é o "papel" atrás de tudo */
[data-layer="ceu"] {
  top: -50%; bottom: -50%;
  background: linear-gradient(180deg, var(--cor-ceu-1), var(--cor-ceu-2));
}

[data-layer="sol"] {
  top: 14%; left: 10%;
  width: 130px; height: 130px;
  border-radius: 50%;
  background: radial-gradient(circle at 40% 35%, #fff8e0, var(--cor-sol) 55%, transparent 72%);
  box-shadow: 0 0 130px 40px var(--brilho-sol);
}

[data-layer="nuvens"] {
  top: -10%; height: 45%;
  filter: blur(1px);
  background-image:
    radial-gradient(90px 30px at 15% 40%, var(--cor-nuvem), transparent 70%),
    radial-gradient(70px 24px at 35% 60%, var(--cor-nuvem), transparent 70%),
    radial-gradient(110px 34px at 60% 35%, var(--cor-nuvem), transparent 70%),
    radial-gradient(60px 20px at 80% 55%, var(--cor-nuvem), transparent 70%),
    radial-gradient(100px 30px at 92% 30%, var(--cor-nuvem), transparent 70%);
}

[data-layer="montanha-longe"] {
  top: 30%; bottom: -50%;
  background: var(--cor-longe);
  clip-path: polygon(0 58%, 10% 44%, 22% 52%, 35% 30%, 48% 46%, 62% 24%, 76% 42%, 88% 30%, 100% 44%, 100% 100%, 0 100%);
}

[data-layer="montanha-media"] {
  top: 48%; bottom: -50%;
  background: var(--cor-media);
  clip-path: polygon(0 62%, 14% 48%, 30% 58%, 44% 40%, 58% 54%, 72% 38%, 86% 50%, 100% 42%, 100% 100%, 0 100%);
}

[data-layer="colina"] {
  top: 62%; bottom: -50%;
  background: var(--cor-colina);
  border-radius: 100% 100% 0 0 / 85% 85% 0 0;
}

[data-layer="arvores"] {
  top: 56%; bottom: -50%;
  background: linear-gradient(180deg, transparent 58%, var(--cor-bosque) 58%);
}

.arvore {
  position: absolute;
  bottom: 6%;
  font-size: 34px;
  line-height: 1;
  filter: drop-shadow(0 4px 6px rgba(0, 0, 0, 0.35));
}

/* conteúdo por cima das camadas */
.scene-content {
  position: relative;
  z-index: 5;
  padding: 0 20px;
  text-shadow: 0 2px 24px rgba(0, 0, 0, 0.45);
}

.tag {
  display: inline-block;
  font-size: 0.8rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.85);
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid rgba(255, 255, 255, 0.3);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 18px;
}

.scene h1, .scene h2 {
  font-size: clamp(2.6rem, 9vw, 5.5rem);
  font-weight: 800;
  letter-spacing: 2px;
  line-height: 1;
}

.scene h1 span, .scene h2 span { color: var(--cor-sol); }

.scene .sub {
  margin-top: 16px;
  font-size: 1.05rem;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
  color: rgba(255, 255, 255, 0.92);
}

.hint {
  margin-top: 26px;
  font-size: 0.85rem;
  letter-spacing: 2px;
  color: rgba(255, 255, 255, 0.75);
  animation: pisca 1.6s ease-in-out infinite;
}

@keyframes pisca {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

/* ---------- blocos de texto entre as cenas ---------- */
.texto {
  padding: 90px 20px;
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.texto h2 { font-size: 1.9rem; margin-bottom: 14px; }
.texto h2 span { color: #ffc987; }
.texto p { color: var(--muted); margin-bottom: 12px; }
.texto code { background: rgba(255, 255, 255, 0.08); padding: 2px 8px; border-radius: 6px; font-size: 0.9em; }

footer {
  padding: 30px 20px;
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}
footer a { color: #8fa8ff; }