/* Cialdini Lab — estilo editorial escuro, uma cor de acento */

@font-face {
  font-family: 'system-serif';
  src: local('Georgia');
}

:root {
  --bg: #0a0a0a;
  --bg-alt: #0f0f0f;
  --ink: #ededea;
  --ink-dim: #9a9a94;
  --ink-faint: #5c5c58;
  --accent: #00BFAE;
  --line: #232320;
  --serif: Georgia, 'Iowan Old Style', 'Times New Roman', serif;
  --sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  --max: 720px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

::selection { background: var(--accent); color: #050505; }

/* subtle grain overlay for texture, no imagery */
.noise-overlay {
  position: fixed; inset: 0; pointer-events: none; z-index: 999;
  opacity: 0.025; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='100' height='100'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(10,10,10,0.86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 60px;
}
.brand {
  font-family: var(--serif);
  font-size: 1.05rem;
  letter-spacing: 0.02em;
}
.brand em { color: var(--accent); font-style: normal; }

.nav-toggle {
  display: flex; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 8px;
}
.nav-toggle span { width: 20px; height: 1px; background: var(--ink); display: block; transition: transform .25s ease, opacity .25s ease; }

.site-nav {
  display: none;
  flex-direction: column;
  border-bottom: 1px solid var(--line);
  background: var(--bg);
}
.site-nav.open { display: flex; }
.site-nav a {
  color: var(--ink-dim);
  text-decoration: none;
  padding: 14px 24px;
  border-top: 1px solid var(--line);
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: color .2s ease, padding-left .2s ease;
}
.site-nav a:hover, .site-nav a:active { color: var(--accent); padding-left: 30px; }

@media (min-width: 760px) {
  .nav-toggle { display: none; }
  .site-nav { display: flex; flex-direction: row; position: static; border: none; background: none; gap: 4px; }
  .site-nav a { border: none; padding: 10px 16px; font-size: 0.78rem; }
}

/* ---------- Hero ---------- */
.hero { padding: 96px 24px 72px; }
.eyebrow {
  color: var(--accent);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin: 0 0 24px;
}
.hero h1 {
  font-family: var(--serif);
  font-size: clamp(2.4rem, 8vw, 3.6rem);
  line-height: 1.08;
  margin: 0 0 28px;
  font-weight: 400;
  letter-spacing: -0.01em;
}
.accent { color: var(--accent); }
.hero-lede {
  color: var(--ink-dim);
  font-size: 1.05rem;
  max-width: 46ch;
  margin: 0 0 40px;
}
.cta-link {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--accent);
  padding-bottom: 3px;
  font-size: 0.92rem;
  transition: opacity .2s ease;
}
.cta-link:hover { opacity: 0.7; }

/* ---------- Sections ---------- */
.section { padding: 88px 0; border-top: 1px solid var(--line); }
.section-alt { background: var(--bg-alt); }
.section-title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(1.7rem, 5vw, 2.3rem);
  margin: 0 0 20px;
  display: flex; align-items: baseline; gap: 14px;
}
.section-num {
  font-size: 0.9rem;
  color: var(--accent);
  font-family: var(--sans);
  letter-spacing: 0.1em;
  border: 1px solid var(--accent);
  border-radius: 50%;
  width: 28px; height: 28px;
  display: inline-flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.section-intro {
  color: var(--ink-dim);
  max-width: 58ch;
  margin: 0 0 48px;
  font-size: 1rem;
}
.section-intro em { color: var(--ink); font-style: italic; }

/* ---------- Principios ---------- */
.principios-list { display: flex; flex-direction: column; gap: 0; }
.principio-card {
  border-top: 1px solid var(--line);
  padding: 36px 0;
}
.principio-card:last-child { border-bottom: 1px solid var(--line); }
.principio-head {
  display: flex; align-items: baseline; gap: 16px; cursor: pointer;
  user-select: none;
}
.principio-numero {
  font-family: var(--serif);
  font-size: 0.85rem;
  color: var(--ink-faint);
}
.principio-nome {
  font-family: var(--serif);
  font-size: 1.4rem;
  margin: 0;
  flex: 1;
}
.principio-ingles { color: var(--ink-faint); font-size: 0.82rem; }
.principio-toggle {
  color: var(--accent); font-size: 1.2rem;
  transition: transform .25s ease;
  flex-shrink: 0;
}
.principio-card.open .principio-toggle { transform: rotate(45deg); }
.principio-def {
  color: var(--ink-dim);
  margin: 14px 0 0;
  font-size: 0.98rem;
  max-width: 62ch;
}
.principio-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s ease;
}
.principio-card.open .principio-body { max-height: 2000px; }
.principio-body-inner { padding-top: 24px; }

.principio-block { margin-bottom: 22px; }
.principio-block h4 {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-faint);
  margin: 0 0 8px;
}
.principio-block p { margin: 0; font-size: 0.95rem; color: var(--ink); max-width: 64ch; }

.etica-manip { display: grid; grid-template-columns: 1fr; gap: 16px; margin-bottom: 22px; }
@media (min-width: 640px) { .etica-manip { grid-template-columns: 1fr 1fr; } }
.etica-box, .manip-box {
  border-left: 2px solid;
  padding: 4px 0 4px 16px;
}
.etica-box { border-color: var(--accent); }
.manip-box { border-color: #6b3a3a; }
.etica-box h4 { color: var(--accent); }
.manip-box h4 { color: #b06060; }

.exemplos-grid { display: flex; flex-direction: column; gap: 14px; }
.exemplo-item {
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 16px;
}
.exemplo-negocio {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  display: block;
  margin-bottom: 6px;
}
.exemplo-item p { margin: 0; font-size: 0.93rem; color: var(--ink-dim); }

/* ---------- Ancoras ---------- */
#ancorasContent h3 {
  font-family: var(--serif); font-size: 1.5rem; font-weight: 400; margin: 0 0 16px;
}
#ancorasContent p { color: var(--ink-dim); max-width: 64ch; margin: 0 0 20px; font-size: 0.98rem; }
#ancorasContent .estudo-box {
  border-left: 2px solid var(--accent);
  padding-left: 18px;
  margin: 28px 0;
}
#ancorasContent .estudo-box p { color: var(--ink); }
.ancora-app {
  margin: 32px 0 0;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 4px;
}
.ancora-app h4 { font-size: 1rem; margin: 0 0 8px; color: var(--ink); }
.ancora-app p { margin: 0; font-size: 0.93rem; }
.aviso-box {
  margin-top: 28px;
  font-size: 0.88rem;
  color: var(--ink-faint);
  border-top: 1px dashed var(--line);
  padding-top: 20px;
}

/* ---------- Drill ---------- */
.drill-progress-bar {
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  margin-bottom: 40px;
}
.drill-progress-track {
  flex: 1; min-width: 140px; height: 3px; background: var(--line); border-radius: 2px; overflow: hidden;
}
.drill-progress-fill {
  height: 100%; width: 0%; background: var(--accent); transition: width .4s ease;
}
.drill-progress-label { font-size: 0.8rem; color: var(--ink-faint); white-space: nowrap; }
.reset-btn {
  background: none; border: 1px solid var(--line); color: var(--ink-faint);
  font-size: 0.72rem; padding: 6px 12px; border-radius: 20px; cursor: pointer;
  transition: border-color .2s ease, color .2s ease;
}
.reset-btn:hover { border-color: var(--accent); color: var(--accent); }

.drill-grid {
  display: grid; grid-template-columns: 1fr; gap: 14px;
}
@media (min-width: 640px) { .drill-grid { grid-template-columns: 1fr 1fr; } }

.drill-card {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 22px;
  cursor: pointer;
  transition: border-color .2s ease, transform .2s ease, background .2s ease;
  position: relative;
}
.drill-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.drill-card.done { background: rgba(0,191,174,0.04); }
.drill-card.done::after {
  content: '✓';
  position: absolute; top: 16px; right: 18px;
  color: var(--accent); font-size: 0.9rem;
}
.drill-card-num { font-size: 0.72rem; color: var(--ink-faint); display: block; margin-bottom: 10px; }
.drill-card-title { font-family: var(--serif); font-size: 1.1rem; margin: 0 0 10px; }
.drill-card-ctx { font-size: 0.86rem; color: var(--ink-dim); margin: 0; }

/* modal */
.drill-modal { position: fixed; inset: 0; z-index: 200; display: none; }
.drill-modal.open { display: block; }
.drill-modal-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,0.75); backdrop-filter: blur(2px); }
.drill-modal-panel {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%,-50%);
  background: var(--bg-alt); border: 1px solid var(--line); border-radius: 8px;
  width: min(560px, 92vw); max-height: 86vh; overflow-y: auto;
  padding: 32px 24px 28px;
}
@media (min-width: 640px) { .drill-modal-panel { padding: 40px; } }
.modal-close {
  position: absolute; top: 14px; right: 16px;
  background: none; border: none; color: var(--ink-faint); font-size: 1.6rem;
  cursor: pointer; line-height: 1;
}
.modal-close:hover { color: var(--accent); }

.modal-situacao { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--accent); margin: 0 0 8px; }
.modal-contexto { font-family: var(--serif); font-size: 1.2rem; line-height: 1.4; margin: 0 0 28px; }
.modal-opcoes { display: flex; flex-direction: column; gap: 10px; }
.opcao-btn {
  text-align: left;
  background: none;
  border: 1px solid var(--line);
  color: var(--ink);
  padding: 14px 16px;
  border-radius: 5px;
  font-size: 0.92rem;
  cursor: pointer;
  transition: border-color .2s ease, background .2s ease;
  line-height: 1.45;
}
.opcao-btn:hover { border-color: var(--ink-dim); }
.opcao-btn.correct { border-color: var(--accent); background: rgba(0,191,174,0.08); }
.opcao-btn.wrong { border-color: #6b3a3a; background: rgba(107,58,58,0.1); opacity: 0.7; }
.opcao-btn:disabled { cursor: default; }

.modal-feedback { margin-top: 26px; padding-top: 22px; border-top: 1px solid var(--line); }
.feedback-tag {
  display: inline-block; font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.08em;
  padding: 4px 10px; border-radius: 20px; margin-bottom: 14px;
}
.feedback-tag.ok { background: rgba(0,191,174,0.15); color: var(--accent); }
.feedback-tag.no { background: rgba(107,58,58,0.2); color: #c98383; }
.modal-feedback h5 { font-size: 0.8rem; color: var(--ink-faint); margin: 16px 0 6px; text-transform: uppercase; letter-spacing: 0.06em; }
.modal-feedback p { margin: 0; font-size: 0.92rem; color: var(--ink); }
.modal-next {
  margin-top: 24px;
  background: var(--accent); color: #06231f; border: none;
  padding: 10px 20px; border-radius: 5px; font-size: 0.88rem; cursor: pointer;
  font-weight: 600;
}
.modal-next:hover { opacity: 0.88; }

/* ---------- Pontes ---------- */
.pontes-list { display: flex; flex-direction: column; gap: 32px; }
.ponte-item { border-top: 1px solid var(--line); padding-top: 28px; }
.ponte-item h3 { font-family: var(--serif); font-size: 1.25rem; margin: 0 0 12px; font-weight: 400; }
.ponte-item p { margin: 0; color: var(--ink-dim); font-size: 0.96rem; max-width: 66ch; }

/* ---------- Guioes ---------- */
.guioes-list { display: flex; flex-direction: column; gap: 22px; }
.guiao-card {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 24px;
}
.guiao-titulo { font-family: var(--serif); font-size: 1.1rem; margin: 0 0 14px; }
.guiao-texto {
  font-style: italic;
  color: var(--ink-dim);
  border-left: 2px solid var(--accent);
  padding-left: 16px;
  margin: 0 0 16px;
  font-size: 0.95rem;
  line-height: 1.6;
}
.guiao-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.guiao-tag {
  font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.05em;
  border: 1px solid var(--line); color: var(--ink-faint);
  padding: 4px 10px; border-radius: 20px;
}

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--line); padding: 40px 0 60px; }
.site-footer p { color: var(--ink-faint); font-size: 0.82rem; margin: 0; }
.site-footer em { color: var(--ink-dim); font-style: italic; }

/* reveal-on-scroll */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .6s ease, transform .6s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }