/* ===== Fatura Solar — site de divulgação =====
   Tokens e regras conforme fatura-solar-brand-spec.md (brand kit oficial) */

@font-face {
  font-family: "Inter";
  src: url("../fonts/inter-var.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Sora";
  src: url("../fonts/sora-var.woff2") format("woff2");
  font-weight: 100 800;
  font-style: normal;
  font-display: swap;
}

:root {
  /* Design tokens do brand kit */
  --fs-green: #119355;
  --fs-green-light: #3bc77f;
  --fs-green-deep: #0e7a46;
  --fs-night: #0a2419;
  --fs-night-soft: #1d3b2e;
  --fs-paper: #f7f5f0;
  --fs-ink: #1b2733;
  --fs-muted: #5b6b7b;
  --fs-gradient-solar: linear-gradient(45deg, var(--fs-green), var(--fs-green-light));

  /* Derivados do site */
  --green-tint-12: rgba(17, 147, 85, 0.12);
  --green-tint-08: rgba(17, 147, 85, 0.08);
  --green-tint-border: rgba(17, 147, 85, 0.22);
  --ink-soft: #33424e;
  --card: #ffffff;
  --border: #e6e1d7;
  --night-text: #b7cabe;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(10, 36, 25, 0.04), 0 8px 24px rgba(10, 36, 25, 0.06);
  --shadow-lg: 0 2px 4px rgba(10, 36, 25, 0.05), 0 20px 48px rgba(10, 36, 25, 0.1);

  --font-body: "Inter", -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-brand: "Sora", -apple-system, "Segoe UI", Roboto, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--fs-ink);
  background: var(--fs-paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3, h4 {
  font-family: var(--font-brand);
  font-weight: 700;
}

a { color: var(--fs-green-deep); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  width: min(1120px, calc(100% - 48px));
  margin-inline: auto;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(247, 245, 240, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 68px;
}

.brand { display: inline-flex; align-items: center; }
.brand img { height: 36px; width: auto; }

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.main-nav a {
  color: var(--ink-soft);
  font-size: 0.95rem;
  font-weight: 500;
}
.main-nav a:hover { color: var(--fs-green-deep); text-decoration: none; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, transform 0.1s ease;
  white-space: nowrap;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }

.btn-primary {
  background: var(--fs-green);
  color: #fff;
}
.btn-primary:hover { background: var(--fs-green-deep); }

.btn-outline {
  background: transparent;
  color: var(--fs-night);
  border-color: var(--fs-night);
}
.btn-outline:hover { background: var(--green-tint-08); }

.btn-lg { padding: 15px 30px; font-size: 1.05rem; }

.nav-cta { display: inline-flex; }

/* ===== Hero ===== */
.hero {
  position: relative;
  overflow: hidden;
  padding: 88px 0 96px;
  background:
    radial-gradient(1200px 500px at 80% -10%, #e7f3ec 0%, transparent 60%),
    radial-gradient(900px 420px at 5% 110%, #f1ede2 0%, transparent 55%),
    var(--fs-paper);
}

.hero .container {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 64px;
  align-items: center;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--green-tint-12);
  color: var(--fs-green-deep);
  border: 1px solid var(--green-tint-border);
  border-radius: 999px;
  padding: 7px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
}
.badge .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--fs-green);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(17, 147, 85, 0.45); }
  50% { box-shadow: 0 0 0 6px rgba(17, 147, 85, 0); }
}

.hero h1 {
  font-size: clamp(2.05rem, 4.2vw, 3.05rem);
  line-height: 1.16;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  color: var(--fs-night);
}
.hero h1 em {
  font-style: normal;
  color: var(--fs-green);
}

.hero .lead {
  font-size: 1.16rem;
  color: var(--fs-muted);
  max-width: 34rem;
  margin-bottom: 32px;
}

.hero-ctas { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 28px; }

.hero-note {
  font-size: 0.88rem;
  color: var(--fs-muted);
}

/* Hero mockup */
.hero-visual { position: relative; }

.mock {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow-lg);
  padding: 22px;
}

.mock-topbar {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
}
.mock-topbar .dots { display: flex; gap: 5px; }
.mock-topbar .dots span {
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--border);
}
.mock-topbar .mock-title {
  margin-left: 8px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--fs-muted);
}

.mock-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 14px;
}
.mock-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px;
}
.mock-card .k {
  font-size: 0.7rem;
  color: var(--fs-muted);
  margin-bottom: 4px;
}
.mock-card .v {
  font-family: var(--font-brand);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--fs-night);
}
.mock-card .v.green { color: var(--fs-green-deep); }

.mock-chart {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
}
.mock-chart .k {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--ink-soft);
  margin-bottom: 10px;
}
.mock-bars {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  height: 110px;
}
.mock-bars i {
  flex: 1;
  border-radius: 6px 6px 2px 2px;
  background: var(--fs-gradient-solar);
}

.mock-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 14px;
  margin-top: 12px;
  font-size: 0.8rem;
}
.mock-row .pill {
  background: var(--green-tint-12);
  color: var(--fs-green-deep);
  font-weight: 700;
  border-radius: 999px;
  padding: 3px 10px;
  font-size: 0.72rem;
}

.float-tag {
  position: absolute;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 10px 14px;
  font-size: 0.82rem;
  font-weight: 600;
}
.float-tag.tag-a { top: -18px; right: 6px; color: var(--fs-green-deep); }
.float-tag.tag-b { bottom: -16px; left: -10px; color: var(--ink-soft); }

/* ===== Sections ===== */
section { padding: 84px 0; scroll-margin-top: 68px; }

.section-head {
  max-width: 44rem;
  margin: 0 auto 52px;
  text-align: center;
}
.kicker {
  display: inline-block;
  font-family: var(--font-brand);
  color: var(--fs-green);
  font-weight: 600;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  margin-bottom: 12px;
}
.section-head h2 {
  font-size: clamp(1.65rem, 2.9vw, 2.2rem);
  letter-spacing: -0.015em;
  line-height: 1.22;
  margin-bottom: 14px;
  color: var(--fs-night);
}
.section-head p { color: var(--fs-muted); font-size: 1.05rem; }

/* Stats */
.stats { background: #fff; border-block: 1px solid var(--border); padding: 40px 0; }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  text-align: center;
}
.stat .n {
  display: block;
  font-family: var(--font-brand);
  font-weight: 700;
  font-size: 2.1rem;
  letter-spacing: -0.02em;
  color: var(--fs-night);
}
.stat .l { color: var(--fs-muted); font-size: 0.92rem; }

/* Diferenciais */
.diff-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
  max-width: 60rem;
  margin-inline: auto;
}
.diff {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}
.diff-num {
  display: inline-block;
  font-family: var(--font-brand);
  font-weight: 700;
  font-size: 0.88rem;
  letter-spacing: 0.06em;
  color: var(--fs-green);
  margin-bottom: 10px;
}
.diff h3 { font-size: 1.08rem; font-weight: 600; color: var(--fs-night); margin-bottom: 6px; }
.diff p { color: var(--fs-muted); font-size: 0.95rem; }

/* Pains */
.pains { background: #fff; border-block: 1px solid var(--border); }
.pain-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.pain {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  background: var(--fs-paper);
}
.pain h3 { font-size: 1.02rem; font-weight: 600; margin-bottom: 8px; color: var(--fs-night); }
.pain p { color: var(--fs-muted); font-size: 0.95rem; }
.pain .x {
  display: inline-flex;
  width: 38px; height: 38px;
  border-radius: 10px;
  background: #fdeeee;
  color: #b3402f;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  font-weight: 800;
}

/* Features */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.feature {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 22px;
  box-shadow: var(--shadow);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.feature:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.feature .icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: var(--green-tint-12);
  color: var(--fs-green-deep);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}
.feature .icon svg { width: 22px; height: 22px; }
.feature h3 { font-size: 0.98rem; font-weight: 600; margin-bottom: 6px; color: var(--fs-night); }
.feature p { color: var(--fs-muted); font-size: 0.9rem; }

/* Steps */
.steps { background: var(--fs-night); color: #fff; }
.steps .section-head h2 { color: #fff; }
.steps .kicker { color: var(--fs-green-light); }
.steps .section-head p { color: var(--night-text); }
.step-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.step {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: var(--radius);
  padding: 26px 22px;
}
.step .num {
  display: inline-flex;
  width: 34px; height: 34px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--fs-green-light);
  color: var(--fs-night);
  font-family: var(--font-brand);
  font-weight: 700;
  margin-bottom: 16px;
}
.step h3 { font-size: 0.98rem; font-weight: 600; margin-bottom: 6px; }
.step p { color: var(--night-text); font-size: 0.9rem; }

/* Audience */
.aud-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.aud {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 26px;
  box-shadow: var(--shadow);
}
.aud h3 { font-size: 1.05rem; font-weight: 600; margin-bottom: 8px; color: var(--fs-night); }
.aud p { color: var(--fs-muted); font-size: 0.95rem; margin-bottom: 14px; }
.aud ul { list-style: none; }
.aud li {
  position: relative;
  padding-left: 26px;
  font-size: 0.92rem;
  color: var(--ink-soft);
  margin-bottom: 8px;
}
.aud li::before {
  content: "";
  position: absolute;
  left: 0; top: 5px;
  width: 15px; height: 15px;
  border-radius: 50%;
  background: var(--green-tint-12);
  border: 1px solid var(--green-tint-border);
}
.aud li::after {
  content: "";
  position: absolute;
  left: 4px; top: 9px;
  width: 7px; height: 4px;
  border-left: 2px solid var(--fs-green-deep);
  border-bottom: 2px solid var(--fs-green-deep);
  transform: rotate(-45deg);
}

/* White label */
.whitelabel { background: #fff; border-block: 1px solid var(--border); }
.wl-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}
.wl-inner h2 {
  font-size: clamp(1.55rem, 2.7vw, 2rem);
  letter-spacing: -0.015em;
  margin-bottom: 14px;
  color: var(--fs-night);
}
.wl-inner .kicker { margin-bottom: 10px; }
.wl-inner p { color: var(--fs-muted); margin-bottom: 12px; }
.wl-card {
  background: var(--fs-paper);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 28px;
  box-shadow: var(--shadow);
}
.wl-brandbar {
  display: flex;
  align-items: center;
  gap: 14px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 18px;
  margin-bottom: 14px;
}
.wl-brandbar .logo-slot {
  width: 96px; height: 30px;
  border: 2px dashed var(--green-tint-border);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.62rem;
  font-weight: 700;
  color: var(--fs-green-deep);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  flex-shrink: 0;
}
.wl-brandbar .logo-slot.alt {
  border-color: #b9c2cb;
  color: var(--fs-muted);
}
.wl-brandbar .sep { width: 1px; height: 26px; background: var(--border); flex-shrink: 0; }
.wl-brandbar img { height: 34px; width: auto; }
.wl-note { font-size: 0.85rem; color: var(--fs-muted); }

/* FAQ */
.faq-list { max-width: 46rem; margin-inline: auto; }
.faq-list details {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 12px;
}
.faq-list summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 1rem;
  color: var(--fs-night);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
  content: "+";
  font-size: 1.3rem;
  color: var(--fs-green);
  font-weight: 600;
  flex-shrink: 0;
  transition: transform 0.15s ease;
}
.faq-list details[open] summary::after { transform: rotate(45deg); }
.faq-list details p {
  margin-top: 12px;
  color: var(--fs-muted);
  font-size: 0.95rem;
}

/* Contact / CTA final */
.contact { background: var(--fs-night); color: #fff; }
.contact-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}
.contact h2 {
  font-size: clamp(1.65rem, 2.9vw, 2.2rem);
  letter-spacing: -0.015em;
  margin-bottom: 14px;
}
.contact .lead { color: var(--night-text); margin-bottom: 28px; font-size: 1.05rem; }
.contact .btn-primary { background: var(--fs-green); color: #fff; }
.contact .btn-primary:hover { background: var(--fs-green-light); color: var(--fs-night); }
.contact .btn-outline { border-color: rgba(255,255,255,0.55); color: #fff; }
.contact .btn-outline:hover { background: rgba(255,255,255,0.08); }

.contact-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: var(--radius);
  padding: 30px;
}
.contact-card h3 {
  font-family: var(--font-brand);
  color: var(--fs-green-light);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
  font-weight: 600;
  margin-bottom: 18px;
}
.contact-card ul { list-style: none; }
.contact-card li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  margin-bottom: 16px;
  font-size: 0.95rem;
}
.contact-card li svg { width: 20px; height: 20px; flex-shrink: 0; margin-top: 2px; color: var(--fs-green-light); }
.contact-card a { color: #fff; text-decoration: underline; text-decoration-color: rgba(255,255,255,0.35); }
.contact-card .small { font-size: 0.82rem; color: var(--night-text); }

/* ===== Footer ===== */
.site-footer {
  background: var(--fs-night);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--night-text);
  padding: 56px 0 32px;
  font-size: 0.9rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.site-footer .brand { margin-bottom: 14px; }
.site-footer .brand img { height: 32px; }
.site-footer h4 {
  color: #fff;
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 14px;
}
.site-footer ul { list-style: none; }
.site-footer li { margin-bottom: 9px; }
.site-footer a { color: var(--night-text); }
.site-footer a:hover { color: #fff; }
.footer-legal {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  font-size: 0.82rem;
  color: #8fa698;
  line-height: 1.8;
}
.footer-legal strong { color: var(--night-text); }

/* ===== Legal pages ===== */
.legal-page { padding: 64px 0 88px; }
.legal-page .container { max-width: 780px; }
.legal-page h1 {
  font-size: clamp(1.75rem, 3.3vw, 2.3rem);
  letter-spacing: -0.015em;
  margin-bottom: 8px;
  color: var(--fs-night);
}
.legal-updated { color: var(--fs-muted); font-size: 0.9rem; margin-bottom: 40px; }
.legal-page h2 {
  font-size: 1.25rem;
  letter-spacing: -0.01em;
  margin: 40px 0 12px;
  color: var(--fs-night);
}
.legal-page h3 { font-size: 1.02rem; font-weight: 600; margin: 24px 0 8px; color: var(--fs-night); }
.legal-page p, .legal-page li { color: var(--ink-soft); margin-bottom: 12px; }
.legal-page ul, .legal-page ol { padding-left: 24px; margin-bottom: 16px; }
.legal-page li { margin-bottom: 6px; }
.legal-page .box {
  background: var(--green-tint-08);
  border: 1px solid var(--green-tint-border);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin: 24px 0;
  font-size: 0.95rem;
}

/* ===== Responsive ===== */
@media (max-width: 960px) {
  .hero .container { grid-template-columns: 1fr; gap: 48px; }
  .hero { padding: 64px 0 72px; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .step-grid { grid-template-columns: repeat(2, 1fr); }
  .pain-grid, .aud-grid { grid-template-columns: 1fr; }
  .wl-inner, .contact-inner { grid-template-columns: 1fr; gap: 36px; }
  .diff-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .main-nav .nav-link { display: none; }
}

@media (max-width: 560px) {
  .feature-grid, .step-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .mock-cards { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: 1fr; gap: 18px; }
  section { padding: 64px 0; }
  .brand img { height: 32px; }
}

.footer-legal a { color: var(--night-text); text-decoration: underline; text-underline-offset: 2px; }
.footer-legal a:hover { color: #fff; }