/* ============================================================
   SILVESTRA PAISAJISMO — sistema visual
   Paleta derivada del logo: verde bosque + baya rosada
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=Cormorant+Garamond:ital,wght@0,300;0,400;1,300;1,400&display=swap');

:root {
  /* — Verdes (del trazo del logo) — */
  --verde-950: #082619;
  --verde-900: #0c3623;
  --verde-800: #114a30;
  --verde-700: #16613f;   /* verde firma del logo */
  --verde-600: #1d7a4f;
  --verde-500: #2f9468;
  --verde-400: #5cae87;
  --verde-300: #8ac8a8;
  --verde-200: #bfe0cf;
  --verde-100: #e3f0e8;

  /* — Rosas baya (de los puntos del logo) — */
  --rosa-700: #9c3f5e;
  --rosa-600: #b14a6c;
  --rosa-500: #c25a7a;    /* baya firma */
  --rosa-400: #d585a0;
  --rosa-300: #e3a8bd;
  --rosa-200: #efccd8;
  --rosa-100: #f7e6ec;

  /* — Neutros cálidos (arena / hueso) — */
  --hueso: #faf8f2;
  --crema: #f4f1e8;
  --crema-2: #ece6d8;
  --tierra: #ddd3bf;
  --tierra-oscura: #c2b59a;

  /* — Tinta — */
  --ink: #18271f;
  --ink-soft: #3a4b41;
  --ink-mute: #6b7a70;

  /* — Roles — */
  --bg: var(--hueso);
  --fg: var(--ink);

  /* — Tipografía — */
  --serif: 'Inter', system-ui, sans-serif;
  --sans: 'Inter', system-ui, sans-serif;
  --hero-font: 'Cormorant Garamond', Georgia, serif;

  /* — Layout — */
  --max: 1180px;
  --max-text: 720px;
  --pad: clamp(1rem, 5vw, 6rem);
  --section-y: clamp(4.25rem, 9vh, 7.5rem);
  --section-y-compact: clamp(2.5rem, 6vh, 4rem);

  /* — Forma — */
  --radius-card: 8px;
  --radius-field: 6px;
  --radius-pill: 999px;
  --shadow-card: 0 18px 42px -34px rgba(12,54,35,.5);

  /* — Motion — */
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --ease-soft: cubic-bezier(0.4, 0, 0.2, 1);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  line-height: 1.6;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; }

/* ---------- Tipografía ---------- */
.display {
  font-family: var(--serif);
  font-weight: 300;
  line-height: 1.08;
  letter-spacing: 0;
  margin: 0;
  text-wrap: balance;
}
.eyebrow {
  font-family: var(--sans);
  text-transform: uppercase;
  letter-spacing: 0.32em;
  font-size: 0.72rem;
  color: var(--verde-600);
}
.eyebrow.on-dark { color: var(--verde-300); }

.lede {
  font-family: var(--sans);
  font-weight: 300;
  font-size: clamp(1.05rem, 1.8vw, 1.45rem);
  line-height: 1.6;
  color: var(--ink-soft);
}
.body-lg { font-size: 1.075rem; color: var(--ink-soft); line-height: 1.75; }

em, .italic { font-style: italic; }

/* ---------- Layout helpers ---------- */
.wrap { max-width: var(--max); margin-inline: auto; padding-inline: var(--pad); }
.section { padding-block: var(--section-y); position: relative; }

/* ---------- Texturas de marca ---------- */
.tex-dots::before {
  content: "";
  position: absolute; inset: 0;
  background-image: radial-gradient(circle at 2px 2px, currentColor 1px, transparent 0);
  background-size: 38px 38px;
  opacity: 0.05; pointer-events: none;
}

/* ---------- Botón ---------- */
.btn {
  font-family: var(--sans);
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 1.05em 2.1em;
  border-radius: var(--radius-pill);
  border: 1.5px solid var(--verde-700);
  background: var(--verde-700);
  color: var(--hueso);
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.7em;
  min-height: 48px;
  max-width: 100%;
  text-align: center;
  transition: transform .35s var(--ease), background .35s var(--ease), color .35s var(--ease), box-shadow .35s var(--ease);
  will-change: transform;
}
.btn:hover { transform: translateY(-3px); box-shadow: 0 14px 30px -12px rgba(12,54,35,.5); background: var(--verde-800); }
.btn .arrow { transition: transform .35s var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }

.btn.ghost { background: transparent; color: var(--verde-700); }
.btn.ghost:hover { background: var(--verde-700); color: var(--hueso); }

.btn.on-dark { border-color: rgba(255,255,255,.55); background: transparent; color: var(--hueso); }
.btn.on-dark:hover { background: var(--hueso); color: var(--verde-900); border-color: var(--hueso); }
.btn.solid-light { background: var(--hueso); color: var(--verde-900); border-color: var(--hueso); }
.btn.solid-light:hover { background: var(--crema); color: var(--verde-900); }

/* link con subrayado animado */
.ulink {
  position: relative; text-decoration: none; color: inherit;
  padding-bottom: 2px;
}
.ulink::after {
  content: ""; position: absolute; left: 0; bottom: 0; height: 1px; width: 100%;
  background: currentColor; transform: scaleX(0); transform-origin: right;
  transition: transform .4s var(--ease);
}
.ulink:hover::after { transform: scaleX(1); transform-origin: left; }

/* ---------- Reveal al scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 1s var(--ease), transform 1s var(--ease);
}
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .08s; }
.reveal.d2 { transition-delay: .16s; }
.reveal.d3 { transition-delay: .24s; }
.reveal.d4 { transition-delay: .32s; }
.reveal.d5 { transition-delay: .40s; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1 !important; transform: none !important; }
  * { scroll-behavior: auto; }
}

/* ---------- Brisa (sway) ---------- */
@keyframes brisa {
  0%, 100% { transform: rotate(-1.1deg); }
  50%      { transform: rotate(1.1deg); }
}
@keyframes brisa-soft {
  0%, 100% { transform: rotate(-0.5deg) translateY(0); }
  50%      { transform: rotate(0.6deg) translateY(-4px); }
}

.sprig { overflow: visible; }
.sprig.is-flipped { transform: scaleX(-1); }
.sprig-sway { animation: brisa 5.5s ease-in-out infinite; transform-origin: 60px 110px; }
@media (prefers-reduced-motion: reduce) {
  .sprig-sway { animation: none !important; }
}

/* ---------- Header ---------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 40;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.1rem var(--pad);
  transition: background .5s var(--ease), padding .5s var(--ease), box-shadow .5s var(--ease);
}
.site-header.scrolled {
  background: rgba(250,248,242,.86);
  backdrop-filter: blur(14px) saturate(1.1);
  padding-block: .7rem;
  box-shadow: 0 1px 0 rgba(24,39,31,.07);
}
.site-header .nav-logo { height: 72px; transition: height .5s var(--ease), filter .5s var(--ease); }
.site-header.scrolled .nav-logo { height: 54px; }
.nav-links { display: flex; gap: clamp(1.15rem, 2vw, 2.2rem); align-items: center; }
.nav-links a {
  font-family: var(--sans); font-size: .74rem; letter-spacing: .11em; text-transform: uppercase;
  color: var(--hueso); text-decoration: none; transition: color .4s var(--ease);
}
.site-header.scrolled .nav-links a { color: var(--ink); }
.site-header.light-top .nav-links a { color: var(--ink); }
.nav-toggle {
  display: none;
  width: 48px;
  height: 48px;
  place-items: center;
  border: 1px solid rgba(244,241,232,.42);
  border-radius: var(--radius-pill);
  background: rgba(8,38,25,.2);
  color: var(--hueso);
  cursor: pointer;
}
.nav-toggle svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.9;
  stroke-linecap: round;
}
.site-header.scrolled .nav-toggle,
.site-header.light-top .nav-toggle {
  border-color: rgba(24,39,31,.18);
  background: rgba(250,248,242,.66);
  color: var(--ink);
}
.mobile-menu {
  display: none;
  position: absolute;
  top: calc(100% + .45rem);
  left: var(--pad);
  right: var(--pad);
  padding: .65rem;
  border: 1px solid rgba(24,39,31,.1);
  border-radius: var(--radius-card);
  background: rgba(250,248,242,.94);
  box-shadow: 0 20px 50px -32px rgba(8,38,25,.55);
  backdrop-filter: blur(14px);
}
.mobile-menu a {
  display: flex;
  align-items: center;
  min-height: 48px;
  padding: 0 .85rem;
  border-radius: var(--radius-field);
  color: var(--ink);
  font-family: var(--sans);
  font-size: .78rem;
  letter-spacing: .12em;
  text-decoration: none;
  text-transform: uppercase;
}
.mobile-menu a:hover { background: var(--verde-100); }
.site-header .nav-logo.on-light { opacity: 0; position: absolute; }
.site-header.scrolled .nav-logo.on-dark-logo { opacity: 0; position: absolute; }
.site-header.scrolled .nav-logo.on-light { opacity: 1; position: static; }
.site-header.light-top .nav-logo.on-dark-logo { opacity: 0; position: absolute; }
.site-header.light-top .nav-logo.on-light { opacity: 1; position: static; }
@media (max-width: 820px) {
  :root { --pad: clamp(1rem, 5vw, 1.5rem); }
  .nav-links { display: none; }
  .nav-toggle { display: grid; }
  .site-header { padding-block: .85rem; }
  .site-header .nav-logo { height: 56px; }
  .site-header.scrolled .nav-logo { height: 44px; }
  .site-header.menu-open { background: rgba(250,248,242,.9); backdrop-filter: blur(14px) saturate(1.1); }
  .site-header.menu-open .nav-toggle { border-color: rgba(24,39,31,.18); color: var(--ink); background: rgba(250,248,242,.7); }
  .site-header.menu-open .nav-logo.on-dark-logo { opacity: 0; position: absolute; }
  .site-header.menu-open .nav-logo.on-light { opacity: 1; position: static; }
  .site-header.menu-open .mobile-menu { display: block; }
}

@media (max-width: 520px) {
  .eyebrow {
    font-size: .66rem;
    letter-spacing: .18em;
  }

  .lede {
    font-size: clamp(1rem, 4.8vw, 1.2rem);
    line-height: 1.5;
  }

  .body-lg {
    font-size: 1rem;
    line-height: 1.65;
  }

  .section {
    padding-block: 3.6rem;
  }

  .btn {
    width: 100%;
    padding: .86em 1.05em;
    font-size: .69rem;
    letter-spacing: .09em;
  }
}