/* SEM FIO — Gerador de Mensagem WhatsApp
   Reusa o design system do #1 (perda-whatsapp) com adaptações pro layout em 2 colunas. */

:root {
  --bg: #fafaf7;
  --bg-card: #ffffff;
  --ink: #1a1f24;
  --ink-mid: #4a5560;
  --ink-soft: #7a8693;
  --line: #e5e8eb;
  --line-soft: #f0f2f4;
  --brand: #0a5a9c;
  --brand-mid: #084577;
  --brand-soft: #e6f0f8;
  --accent: #aed81e;
  --accent-mid: #9bc91f;
  --accent-soft: #f3fad7;
  --danger: #b14a3a;
  --ok: #2d6b4e;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.04), 0 4px 12px rgba(14, 59, 67, 0.05);
  --max: 1080px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  font-size: 16px;
}
a { color: var(--brand-mid); text-decoration: none; border-bottom: 1px solid transparent; }
a:hover { border-bottom-color: var(--brand-mid); }
a:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; border-radius: 2px; }

/* Topbar */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 24px;
  border-bottom: 1px solid var(--line);
  background: var(--bg-card);
  position: sticky; top: 0; z-index: 10;
}
.brand { display: flex; align-items: center; gap: 12px; }
.logo-svg { height: 36px; width: auto; display: block; flex-shrink: 0; }
.logo-svg text { font-family: 'Bebas Neue', 'Anton', 'Arial Narrow', Impact, sans-serif; }
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-text strong { font-size: 14px; color: var(--ink); }
.brand-tag { font-size: 11px; color: var(--ink-soft); text-transform: uppercase; letter-spacing: 0.6px; }
.topbar-link { font-size: 13px; color: var(--brand-mid); font-weight: 500; }

/* Layout em 2 colunas */
.layout {
  max-width: var(--max);
  margin: 0 auto;
  padding: 40px 24px 64px;
  display: grid; gap: 24px;
  grid-template-columns: 1fr;
}
@media (min-width: 900px) {
  .layout { grid-template-columns: 1fr 320px; gap: 32px; align-items: start; }
}

.principal { min-width: 0; }
.lateral { position: sticky; top: 80px; }

/* Hero */
.hero { margin-bottom: 24px; }
.eyebrow {
  font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: 1.2px;
  color: var(--brand-mid); margin: 0 0 12px;
}
.hero h1 {
  font-size: clamp(26px, 3.5vw, 36px);
  font-weight: 700; line-height: 1.15; letter-spacing: -0.02em;
  margin: 0 0 14px; color: var(--ink);
}
.hero .lead { font-size: 16px; color: var(--ink-mid); margin: 0; max-width: 560px; }

/* Card */
.card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 24px;
  margin: 0 0 20px;
  box-shadow: var(--shadow);
}
.card h2 { font-size: 18px; font-weight: 600; margin: 0 0 6px; color: var(--ink); }
.card h3 { font-size: 15px; font-weight: 600; margin: 0 0 6px; color: var(--ink); }
.hint { font-size: 13px; color: var(--ink-soft); margin: 0 0 16px; }

/* Form */
.form .field { margin-bottom: 14px; }
.form label {
  display: block; font-size: 13px; font-weight: 600; color: var(--ink);
  margin-bottom: 5px;
}
.form input, .form select {
  width: 100%; padding: 10px 12px;
  border: 1px solid var(--line); border-radius: var(--radius-sm);
  font-size: 15px; color: var(--ink); background: #fff;
  font-family: inherit;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.form select { cursor: pointer; }
.form input:focus, .form select:focus {
  outline: none; border-color: var(--brand);
  box-shadow: 0 0 0 3px var(--brand-soft);
}
.grid-2 {
  display: grid; gap: 12px;
  grid-template-columns: 1fr;
}
@media (min-width: 500px) {
  .grid-2 { grid-template-columns: 1fr 1fr; }
}

.avancado {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  margin: 14px 0;
  background: var(--line-soft);
}
.avancado summary {
  cursor: pointer; font-size: 14px; font-weight: 600; color: var(--brand);
  list-style: none;
  user-select: none;
}
.avancado summary::-webkit-details-marker { display: none; }
.avancado summary::before { content: '+ '; font-weight: 700; }
.avancado[open] summary::before { content: '− '; }
.avancado[open] { background: #fff; }
.avancado[open] .grid-2 { margin-top: 12px; }

/* Buttons */
.btn-primary {
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--brand); color: #fff;
  padding: 12px 22px;
  border: none; border-radius: var(--radius-sm);
  font-size: 15px; font-weight: 600; cursor: pointer;
  text-decoration: none;
  transition: background 0.15s, transform 0.1s;
  font-family: inherit;
}
.btn-primary:hover { background: var(--brand-mid); border-bottom: none; }
.btn-primary:active { transform: translateY(1px); }
.btn-primary:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; }
.form .btn-primary { width: 100%; margin-top: 8px; }

.btn-secondary {
  background: var(--bg-card);
  color: var(--brand);
  padding: 10px 18px;
  border: 1px solid var(--brand);
  border-radius: var(--radius-sm);
  font-size: 14px; font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.15s;
}
.btn-secondary:hover { background: var(--brand-soft); }
.btn-secondary:disabled { opacity: 0.5; cursor: not-allowed; }

/* Resultado */
.resultado { background: var(--brand-soft); border-color: #c8d8da; }
.resultado-lead { font-size: 14px; color: var(--ink-mid); margin: 0 0 18px; }
.variacoes { display: flex; flex-direction: column; gap: 12px; margin-bottom: 18px; }
.variacao {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 16px;
  display: flex; flex-direction: column; gap: 10px;
}
.variacao-texto {
  font-size: 14px;
  color: var(--ink);
  white-space: pre-wrap;
  word-wrap: break-word;
  line-height: 1.5;
}
.variacao-acoes { display: flex; gap: 8px; }
.variacao-btn {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 6px 12px;
  font-size: 12px; font-weight: 600; color: var(--ink-mid);
  cursor: pointer; font-family: inherit;
  transition: all 0.15s;
}
.variacao-btn:hover { border-color: var(--brand); color: var(--brand); }
.variacao-btn.copiado { background: var(--ok); color: #fff; border-color: var(--ok); }

.ia-local-box {
  background: var(--bg-card);
  border: 1px dashed var(--brand);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin-bottom: 18px;
}
.ia-local-box p { font-size: 14px; color: var(--ink-mid); margin: 0 0 10px; }

.cta {
  background: var(--brand);
  color: #fff;
  padding: 18px 20px;
  border-radius: var(--radius);
  text-align: center;
}
.cta p { margin: 0 0 12px; font-size: 14px; }
.cta .btn-primary { background: #fff; color: var(--brand); }
.cta .btn-primary:hover { background: var(--bg); }

/* Feed lateral */
.kit h2, .feed h2 {
  font-size: 14px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.8px;
  color: var(--brand);
  margin: 0 0 4px;
}
.app-list { list-style: none; padding: 0; margin: 8px 0 0; }
.app-list-item { display: block; padding: 10px 0; border-bottom: 1px solid var(--line-soft); }
.app-list-item:last-child { border-bottom: none; }
.app-list-item a { text-decoration: none; }
.app-list-item strong { display: block; font-size: 13px; color: var(--ink); }
.app-list-item span { font-size: 12px; color: var(--ink-soft); }
.feed-lead {
  font-size: 12px; color: var(--ink-soft);
  margin: 0 0 14px;
}
.manchetes { display: flex; flex-direction: column; gap: 12px; }
.manchete {
  padding: 12px 0;
  border-bottom: 1px solid var(--line-soft);
}
.manchete:last-child { border-bottom: none; }
.manchete-titulo {
  font-size: 14px; font-weight: 600; color: var(--ink);
  line-height: 1.35; margin: 0 0 4px;
  display: block;
}
.manchete-titulo:hover { color: var(--brand-mid); }
.manchete-resumo {
  font-size: 12px; color: var(--ink-soft);
  line-height: 1.4;
  margin: 0 0 4px;
}
.manchete-data {
  font-size: 11px; color: var(--ink-soft);
  text-transform: uppercase; letter-spacing: 0.4px;
}
.feed-loading {
  font-size: 13px; color: var(--ink-soft);
  font-style: italic;
  margin: 0;
}
.feed-rodape {
  font-size: 12px;
  text-align: right;
  margin: 12px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
}

/* Rodapé */
.rodape {
  border-top: 1px solid var(--line);
  background: var(--bg-card);
  padding: 32px 24px;
  margin-top: 48px;
}
.rodape-inner {
  max-width: var(--max); margin: 0 auto;
  display: grid; gap: 20px;
  grid-template-columns: 1fr;
  font-size: 13px;
}
@media (min-width: 600px) {
  .rodape-inner { grid-template-columns: 2fr 1fr 1fr; gap: 32px; }
}
.rodape strong { display: block; color: var(--ink); margin-bottom: 4px; }
.rodape p { margin: 0; color: var(--ink-soft); line-height: 1.5; }
.rodape-links { display: flex; flex-direction: column; gap: 4px; }
.rodape-links a { color: var(--ink-mid); }
.rodape-meta p { margin: 0 0 4px; }

@media (max-width: 640px) {
  .layout { padding: 24px 16px 48px; }
  .card { padding: 18px 16px; }
  .topbar { padding: 12px 16px; }
  .topbar-link { display: none; }
  .lateral { position: static; }
}