/* ===================================================================
   Observatório do Alto Tietê — Landing Page
   Tailwind CSS (via CDN) + camadas customizadas
   =================================================================== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Sora:wght@600;700;800&display=swap');

:root {
  --obs-teal: #0d9488;
  --obs-teal-dark: #0f766e;
  --obs-navy: #0b1b33;
  --obs-navy-light: #12264a;
  --obs-gold: #f59e0b;
  --obs-ink: #0f172a;
  --obs-slate: #64748b;
  --obs-bg: #f8fafc;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--obs-bg);
  color: var(--obs-ink);
}

.font-display {
  font-family: 'Sora', 'Inter', sans-serif;
}

/* ---------------------------------------------
   Barra de navegação
   --------------------------------------------- */
.obs-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  transition: background-color .3s ease, box-shadow .3s ease;
}

.obs-nav.is-scrolled {
  box-shadow: 0 8px 30px rgb(2 6 23 / .08);
}

/* ---------------------------------------------
   Hero — gradiente institucional
   --------------------------------------------- */
.obs-hero {
  position: relative;
  overflow: hidden;
  color: #ffffff;
}

.obs-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(1000px 480px at 12% -10%, rgb(13 148 136 / .45), transparent 60%),
    radial-gradient(900px 520px at 110% 10%, rgb(245 158 11 / .28), transparent 60%),
    linear-gradient(160deg, #0b1b33 0%, #0f2b4d 45%, #0d9488 130%);
  z-index: 0;
}

.obs-hero__container {
  position: relative;
  z-index: 1;
}

.obs-hero__badge {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  background: rgb(255 255 255 / .1);
  border: 1px solid rgb(255 255 255 / .2);
  backdrop-filter: blur(6px);
  border-radius: 999px;
  padding: .4rem .9rem;
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .02em;
}

/* ---------------------------------------------
   Cards de eixo
   --------------------------------------------- */
.eixo-card {
  position: relative;
  border: 1px solid #e2e8f0;
  border-radius: 1rem;
  background: #ffffff;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}

.eixo-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 45px rgb(15 23 42 / .12);
  border-color: rgb(13 148 136 / .4);
}

.eixo-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: .8rem;
  font-weight: 800;
  font-size: 1.1rem;
}

.eixo-card[data-eixo="gov"] .eixo-card__icon { background: #0d9488; color: #fff; }
.eixo-card[data-eixo="a"]     .eixo-card__icon { background: #3b82f6; color: #fff; }
.eixo-card[data-eixo="b"]     .eixo-card__icon { background: #10b981; color: #fff; }
.eixo-card[data-eixo="c"]     .eixo-card__icon { background: #8b5cf6; color: #fff; }
.eixo-card[data-eixo="d"]     .eixo-card__icon { background: #f59e0b; color: #fff; }

.progress-track {
  background: #e2e8f0;
  border-radius: 999px;
  height: .5rem;
  overflow: hidden;
}

.progress-track > span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--obs-teal), #22d3ee);
}

/* ---------------------------------------------
   Card de município
   ------------------------------------------ */
.muni-card {
  border: 1px solid #e2e8f0;
  border-radius: 1rem;
  background: #fff;
  transition: transform .25s ease, box-shadow .25s ease;
}

.muni-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 40px rgb(15 23 42 / .1);
}

.muni-card__tag {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  font-size: .7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
  padding: .25rem .6rem;
  border-radius: 999px;
}

.muni-card__tag.-active { background: #d1fae5; color: #065f46; }
.muni-card__tag.-soon   { background: #f1f5f9; color: #64748b; }

/* ---------------------------------------------
   Banner de fonte (JSON → Banco → API)
   --------------------------------------------- */
.obs-pipeline {
  border: 1px dashed rgb(255 255 255 / .35);
  border-radius: 1rem;
  background: rgb(11 27 51 / .35);
  backdrop-filter: blur(6px);
}

/* ---------------------------------------------
   Revelação on-scroll
   ------------------------------------------ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .7s ease, transform .7s ease;
}

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

/* ---------------------------------------------
   Scroll top
   ------------------------------------------ */
.scroll-top-btn {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 40;
  display: grid;
  place-items: center;
  width: 3rem;
  height: 3rem;
  border-radius: 999px;
  background: var(--obs-teal);
  color: #fff;
  box-shadow: 0 12px 30px rgb(13 148 136 / .4);
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s ease, transform .3s ease;
}

.scroll-top-btn.is-visible {
  opacity: 1;
  pointer-events: auto;
}

.scroll-top-btn:hover { transform: translateY(-3px); }

/* ---------------------------------------------
   Arquivos / footer
------------------------------------------ */
.obs-footer a:hover { text-decoration: underline; }

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