/* MasterStudy Brasil — estilos principais
   Direção: Editorial Magazine + Swiss Grid (dominante), com toques pontuais de
   glassmorphism (header) e claymorphism (badges/selos). Ver BRANDING.md. */

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  overflow-x: hidden;
  font-family: var(--font-base);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 {
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0 0 var(--space-3);
  color: var(--color-primary-dark);
}
h1 { font-size: clamp(2.4rem, 6vw, 4.4rem); }
h2 { font-size: clamp(1.8rem, 4vw, 2.8rem); }
h3 { font-size: 1.3rem; letter-spacing: -0.01em; }
p { margin: 0 0 var(--space-3); font-size: 1.05rem; }

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-3);
}

.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 1000;
  background: var(--color-primary-dark); color: #fff; padding: var(--space-2) var(--space-3);
  border-radius: 0 0 var(--radius-sm) 0;
}
.skip-link:focus { left: 0; }

/* ================= Header — glassmorphism ao rolar ================= */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(1, 35, 56, 0.94);
  backdrop-filter: blur(14px) saturate(160%);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 4px 18px rgba(1, 35, 56, 0.18);
  transition: box-shadow .25s ease, background-color .25s ease;
}
.site-header.is-scrolled {
  background: rgba(1, 35, 56, 0.98);
  box-shadow: 0 10px 28px rgba(1, 35, 56, 0.28);
}
.site-header__bar {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--space-2) var(--space-3);
  max-width: var(--container-max); margin: 0 auto;
  gap: var(--space-2);
}
.site-header__logo {
  display: flex; align-items: center; flex-shrink: 0;
  text-decoration: none;
}
.site-header__logo:hover { text-decoration: none; }
.logo-mark { width: 38px; height: 38px; flex-shrink: 0; }

.nav-toggle {
  display: inline-flex; align-items: center; justify-content: center;
  background: none; border: 1px solid rgba(255,255,255,0.25); border-radius: var(--radius-sm);
  padding: var(--space-2); cursor: pointer; color: #fff; flex-shrink: 0;
}
.nav-toggle svg { width: 22px; height: 22px; }

.site-nav {
  display: none;
  position: absolute; top: 100%; left: 0; right: 0;
  background: rgba(1, 35, 56, 0.98); backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,0.1);
  box-shadow: var(--shadow-elevated);
}
.site-nav.is-open { display: block; }
.site-nav__list {
  list-style: none; margin: 0; padding: var(--space-2) var(--space-3) var(--space-4);
  display: flex; flex-direction: column;
}
.site-nav__list a {
  display: block; padding: var(--space-2) 0; color: #fff; font-weight: 700;
}
.site-nav__list a:hover { color: var(--color-accent); text-decoration: none; }
.site-nav__mobile-cta { margin-top: var(--space-2); }

.header-cta { display: none; }

@media (min-width: 900px) {
  .nav-toggle { display: none; }
  .site-nav__mobile-cta { display: none; }
  .site-nav {
    display: block; position: static; border: 0; box-shadow: none; background: transparent; backdrop-filter: none;
  }
  .site-nav__list { flex-direction: row; align-items: center; gap: var(--space-4); padding: 0; }
  .site-nav__list a { padding: var(--space-2) 0; font-size: 0.94rem; }
  .header-cta { display: inline-flex; }
}

/* ================= Botões ================= */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  font-family: var(--font-base); font-weight: 800; font-size: 0.95rem;
  padding: 0.85em 1.5em; border-radius: 999px; border: 2px solid transparent;
  cursor: pointer; transition: transform .18s ease, box-shadow .18s ease, background-color .15s ease;
  text-decoration: none; line-height: 1.2;
}
.btn:hover { text-decoration: none; transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--primary { background: var(--color-primary); color: #fff; box-shadow: 0 6px 16px rgba(0, 85, 175, 0.28); }
.btn--primary:hover { background: var(--color-primary-hover); box-shadow: 0 10px 22px rgba(0, 85, 175, 0.34); }

.btn--whatsapp { background: var(--color-whatsapp); color: #073b1e; box-shadow: 0 6px 16px rgba(37, 211, 102, 0.35); }
.btn--whatsapp:hover { background: var(--color-whatsapp); color: #073b1e; box-shadow: 0 10px 26px rgba(37, 211, 102, 0.5); }

.btn--outline { background: transparent; border-color: var(--color-primary); color: var(--color-primary); }
.btn--outline:hover { background: var(--color-primary-light); }

.btn--external { background: var(--color-primary-dark); color: #fff; }
.btn--external:hover { background: var(--color-primary-darker); }

.btn--block { width: 100%; }

/* ================= Hero — editorial / swiss grid ================= */
.hero { padding: var(--space-8) 0 var(--space-6); position: relative; overflow: hidden; }
.hero::before {
  content: ''; position: absolute; top: -120px; right: -160px; width: 480px; height: 480px;
  background: radial-gradient(circle, var(--color-primary-light) 0%, rgba(230,239,248,0) 70%);
  z-index: -1;
}
.hero__grid { display: grid; gap: var(--space-6); align-items: center; }
.hero__eyebrow {
  display: inline-flex; align-items: center; gap: 6px;
  background: #fff; color: var(--color-accent-dark);
  font-weight: 800; font-size: 0.78rem; letter-spacing: .04em; text-transform: uppercase;
  padding: var(--space-2) var(--space-3); border-radius: 999px; margin-bottom: var(--space-4);
  box-shadow: var(--shadow-card); border: 1px solid var(--color-accent-light);
}
.hero__eyebrow::before { content: '●'; color: var(--color-accent); font-size: 0.6rem; }
.hero h1 { max-width: 14ch; }
.hero__lede { font-size: 1.15rem; color: var(--color-text-muted); max-width: 54ch; }
.hero__actions { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-top: var(--space-5); }
.hero__stats {
  display: grid; grid-template-columns: repeat(3, auto); gap: var(--space-5);
  margin-top: var(--space-7); padding-top: var(--space-5); border-top: 1px solid var(--color-border);
}
.hero__stat-number {
  font-size: 2.1rem; font-weight: 800; letter-spacing: -0.02em; color: var(--color-primary); display: block;
}
.hero__stat-label { color: var(--color-text-muted); font-size: 0.85rem; }

.hero--compact { padding: var(--space-6) 0 var(--space-5); }
.hero--compact h1 { max-width: 22ch; }
.hero--compact .hero__lede { max-width: 62ch; }

.hero__visual { position: relative; margin-top: var(--space-6); }
.hero__photo {
  border-radius: 24px; width: 100%; aspect-ratio: 16 / 10; object-fit: cover;
  box-shadow: 0 20px 40px rgba(1, 55, 89, 0.18);
}
.hero__floatcard {
  display: flex; align-items: center; gap: var(--space-3);
  background: rgba(255,255,255,0.95); backdrop-filter: blur(10px);
  border-radius: 16px; padding: var(--space-3) var(--space-4);
  box-shadow: 0 14px 28px rgba(1, 55, 89, 0.18);
  margin-top: -32px; margin-left: var(--space-4); position: relative; max-width: 260px;
}
.hero__floatcard-icon {
  width: 36px; height: 36px; border-radius: 50%; background: var(--color-accent); color: #fff;
  display: flex; align-items: center; justify-content: center; font-weight: 800; flex-shrink: 0;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.4), 0 4px 10px rgba(31,138,48,0.35);
}
.hero__floatcard strong { display: block; font-size: 0.88rem; color: var(--color-primary-dark); }
.hero__floatcard span { font-size: 0.8rem; color: var(--color-text-muted); }

@media (min-width: 900px) {
  .hero__grid { grid-template-columns: 1.15fr 0.85fr; }
  .hero__visual { margin-top: 0; grid-row: 1; }
  .hero__photo { aspect-ratio: 6 / 7; border-radius: 28px; }
  .hero__floatcard {
    position: absolute; left: -32px; bottom: 32px; margin: 0; max-width: 260px;
  }
}

/* ================= Seções ================= */
.section { padding: var(--space-8) 0; position: relative; }
.section--alt {
  background:
    linear-gradient(180deg, var(--color-bg-alt) 0%, #fff 100%);
  position: relative;
}
.section--alt::before {
  content: '';
  position: absolute; inset: 0; z-index: -1;
  background-image: radial-gradient(rgba(0, 85, 175, 0.08) 1px, transparent 1px);
  background-size: 22px 22px;
  mask-image: linear-gradient(180deg, black, transparent 70%);
  -webkit-mask-image: linear-gradient(180deg, black, transparent 70%);
}
.section__head { max-width: 640px; margin: 0 auto var(--space-7); text-align: center; }
.section__head p { color: var(--color-text-muted); font-size: 1.05rem; }
.section__kicker {
  display: block; font-weight: 800; text-transform: uppercase; letter-spacing: .08em;
  font-size: 0.78rem; color: var(--color-accent-dark); margin-bottom: var(--space-2);
}

/* ================= Credibilidade — faixa de números com textura ================= */
.credibility {
  position: relative;
  background:
    radial-gradient(circle at 12% 20%, rgba(0, 85, 175, 0.06), transparent 45%),
    radial-gradient(circle at 88% 80%, rgba(31, 138, 48, 0.07), transparent 45%),
    var(--color-bg-alt);
}
.credibility__grid {
  display: grid; gap: var(--space-4); grid-template-columns: repeat(2, 1fr); text-align: center;
}
@media (min-width: 800px) { .credibility__grid { grid-template-columns: repeat(4, 1fr); } }
.credibility__item {
  background: #fff; border-radius: 18px; padding: var(--space-4) var(--space-3);
  box-shadow: var(--shadow-card); display: flex; flex-direction: column; gap: 6px;
}
.credibility__number { font-size: 2rem; font-weight: 800; color: var(--color-primary); letter-spacing: -0.02em; }
.credibility__item span:last-child { font-size: 0.85rem; color: var(--color-text-muted); }

/* ================= Logos de credibilidade ================= */
.logo-strip {
  display: flex; flex-wrap: wrap; gap: var(--space-5); align-items: center; justify-content: center;
  opacity: 0.85;
}
.logo-strip img { max-height: 32px; filter: grayscale(1); }

/* ================= Trilha / categorias — cards claymorphism leve ================= */
.track-grid { display: grid; gap: var(--space-4); grid-template-columns: 1fr; }
@media (min-width: 700px) { .track-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1100px) { .track-grid { grid-template-columns: repeat(3, 1fr); } }

.track-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  padding: var(--space-5);
  box-shadow: var(--shadow-card);
  display: flex; flex-direction: column;
  transition: transform .2s ease, box-shadow .2s ease;
}
.track-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-elevated); }
.track-card--flagship {
  background: linear-gradient(165deg, #ffffff 0%, var(--color-primary-light) 130%);
  border-color: var(--color-primary); border-width: 2px; position: relative;
}
.track-card--flagship::before {
  content: 'Carro-chefe'; position: absolute; top: -14px; left: var(--space-4);
  background: var(--color-primary); color: #fff; font-size: 0.72rem; font-weight: 800;
  letter-spacing: .02em; padding: 4px var(--space-3); border-radius: 999px;
  box-shadow: 0 6px 14px rgba(0, 85, 175, 0.35);
}
.track-card__title { margin-bottom: var(--space-2); }
.track-card__list { list-style: none; padding: 0; margin: 0 0 var(--space-4); flex-grow: 1; }
.track-card__list li {
  padding: var(--space-2) 0; border-bottom: 1px dashed var(--color-border); font-size: 0.92rem;
}
.track-card__list li:last-child { border-bottom: 0; }

/* Badge estilo claymorphism: sombra dupla suave, "fofa" */
.badge-free {
  display: inline-block; background: var(--color-accent-light); color: var(--color-accent-dark);
  font-size: 0.68rem; font-weight: 800; padding: 3px 9px; border-radius: 999px; margin-left: var(--space-2);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.6), 0 3px 6px rgba(31, 138, 48, 0.18);
}

/* ================= Barra de âncoras (sumário da trilha) ================= */
.track-jump {
  position: sticky; top: 65px; z-index: 90;
  background: rgba(255,255,255,0.92); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}
.track-jump__list {
  display: flex; gap: var(--space-2); overflow-x: auto; padding: var(--space-2) var(--space-3);
  scrollbar-width: none;
}
.track-jump__list::-webkit-scrollbar { display: none; }
.track-jump__list a {
  flex-shrink: 0; font-weight: 700; font-size: 0.85rem; color: var(--color-primary-dark);
  background: var(--color-bg-alt); padding: var(--space-1) var(--space-3); border-radius: 999px;
  white-space: nowrap;
}
.track-jump__list a:hover { background: var(--color-primary-light); text-decoration: none; }

/* ================= Cards de curso ================= */
.course-grid { display: grid; gap: var(--space-4); grid-template-columns: 1fr; }
@media (min-width: 640px) { .course-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .course-grid { grid-template-columns: repeat(3, 1fr); } }

.course-card {
  background: var(--color-bg); border: 1px solid var(--color-border); border-radius: 18px;
  overflow: hidden; box-shadow: var(--shadow-card); display: flex; flex-direction: column;
  transition: transform .2s ease, box-shadow .2s ease;
}
.course-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-elevated); }
.course-card--flagship {
  background: linear-gradient(165deg, #ffffff 0%, var(--color-primary-light) 130%);
  border-color: var(--color-primary); border-width: 2px;
}
.course-card__body { padding: var(--space-4); display: flex; flex-direction: column; flex-grow: 1; }
.course-card__tag {
  font-size: 0.72rem; font-weight: 800; text-transform: uppercase; letter-spacing: .04em;
  color: var(--color-primary);
}
.course-card__title { margin: var(--space-1) 0 var(--space-2); font-size: 1.15rem; }
.course-card__desc { color: var(--color-text-muted); font-size: 0.92rem; flex-grow: 1; }
.course-card__footer { margin-top: var(--space-3); display: flex; gap: var(--space-2); flex-wrap: wrap; }

/* ================= FAQ ================= */
.faq-item { border-bottom: 1px solid var(--color-border); padding: var(--space-4) 0; }
.faq-item summary {
  cursor: pointer; font-weight: 800; color: var(--color-primary-dark); list-style: none;
  display: flex; justify-content: space-between; align-items: center; gap: var(--space-3);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+'; font-size: 1.3rem; color: #fff; background: var(--color-primary);
  width: 28px; height: 28px; border-radius: 50%; display: inline-flex; align-items: center;
  justify-content: center; flex-shrink: 0; transition: transform .2s ease;
}
.faq-item[open] summary::after { content: '–'; }
.faq-item p { margin-top: var(--space-3); color: var(--color-text-muted); }

/* ================= CTA banner ================= */
.cta-banner {
  background: var(--color-primary-dark); color: #fff; border-radius: 28px;
  padding: var(--space-7) var(--space-5); text-align: center; position: relative; overflow: hidden;
}
.cta-banner::after {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(circle at 85% 20%, rgba(32, 169, 57, 0.25), transparent 55%);
}
.cta-banner > * { position: relative; z-index: 1; }
.cta-banner h2 { color: #fff; }
.cta-banner p { color: #dce7f4; }

/* ================= Footer ================= */
.site-footer { background: var(--color-primary-darker); color: #cfe0ee; padding: var(--space-8) 0 var(--space-4); }
.site-footer a { color: #fff; }
.footer-grid { display: grid; gap: var(--space-5); grid-template-columns: 1fr; }
@media (min-width: 700px) { .footer-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .footer-grid { grid-template-columns: 1.4fr repeat(3, 1fr); } }
.footer-col--brand .logo-mark--footer { width: 44px; height: 44px; margin-bottom: var(--space-3); }
.footer-col h4 { color: #fff; font-size: 0.9rem; text-transform: uppercase; letter-spacing: .06em; }
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col li { margin-bottom: var(--space-2); font-size: 0.92rem; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.15); margin-top: var(--space-6); padding-top: var(--space-4);
  font-size: 0.85rem; color: #9fb8cf; display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--space-2);
}

/* ================= WhatsApp botão flutuante ================= */
.whatsapp-float {
  position: fixed; bottom: var(--space-4); right: var(--space-4); z-index: 200;
  background: var(--color-whatsapp); color: #fff; width: 58px; height: 58px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 10px 24px rgba(37, 211, 102, 0.45);
  transition: transform .2s ease;
}
.whatsapp-float:hover { transform: scale(1.08); }
.whatsapp-float svg { width: 30px; height: 30px; }

/* ================= Banner de cookies (LGPD) — glass ================= */
.cookie-banner {
  position: fixed; left: var(--space-3); right: var(--space-3); bottom: var(--space-3); z-index: 300;
  background: rgba(1, 35, 56, 0.92); backdrop-filter: blur(10px);
  color: #fff; padding: var(--space-4); border-radius: 18px;
  box-shadow: 0 -12px 32px rgba(0,0,0,0.25);
  display: none;
}
.cookie-banner.is-visible { display: block; }
.cookie-banner__inner {
  max-width: var(--container-max); margin: 0 auto;
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--space-3);
}
.cookie-banner p { margin: 0; font-size: 0.88rem; color: #dce7f4; }
.cookie-banner__actions { display: flex; gap: var(--space-2); flex-wrap: wrap; }

/* ================= Índice de cursos ================= */
.course-index-list {
  list-style: none; padding: 0; margin: 0 auto; max-width: 720px;
  display: grid; gap: var(--space-2);
}
.course-index-list li {
  background: var(--color-bg); border: 1px solid var(--color-border); border-radius: 12px;
  padding: var(--space-3) var(--space-4); display: flex; align-items: center; gap: var(--space-2);
  font-weight: 700;
}
.course-index-list li:hover { border-color: var(--color-primary); background: var(--color-primary-light); }
.course-index-list a { color: var(--color-primary-dark); }

/* ================= Conteúdo jurídico (política/termos) ================= */
.legal-copy { max-width: 760px; margin: 0 auto; }
.legal-copy h2 { font-size: 1.3rem; margin-top: var(--space-6); }
.legal-copy h2:first-child { margin-top: 0; }
.legal-copy p { color: var(--color-text-muted); }

/* ================= Breadcrumb ================= */
.breadcrumb { font-size: 0.85rem; color: var(--color-text-muted); margin-bottom: var(--space-4); }
.breadcrumb a { color: var(--color-text-muted); }

/* ================= Utilitários ================= */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }