/* ==========================================================================
   Universitas - Estudos Gerais — design system
   Mobile-first: estilos base valem para telas pequenas; breakpoints
   min-width vão progressivamente ligando o layout de tablet/desktop.
   ========================================================================== */

:root {
  --color-primary: #004B40;       /* verde-petróleo */
  --color-primary-dark: #00332B;
  --color-accent: #22B3A4;        /* turquesa */
  --color-gold: #F0C779;          /* dourado */
  --color-secondary: #54595F;     /* cinza escuro */
  --color-text: #2B2B2B;
  --color-text-muted: #6B6F72;
  --color-border: #E3E5E6;
  --color-bg: #FFFFFF;
  --color-bg-soft: #F6F7F5;
  --color-bg-dark: #00332B;

  --font-body: "Poppins", "Segoe UI", Arial, sans-serif;
  --font-display: "EB Garamond", "Georgia", serif;

  --radius-sm: 4px;
  --radius-md: 8px;
  --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-card-hover: 0 8px 24px rgba(0, 0, 0, 0.14);

  --container-max: 1200px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

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

a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--color-primary-dark);
  margin: 0 0 0.5em;
  text-wrap: balance;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 16px;
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 14px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  white-space: nowrap;
}
.btn:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }

.btn-primary {
  background: var(--color-accent);
  color: #fff;
}
.btn-primary:hover { background: #1c9c8f; }

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

.btn-gold {
  background: linear-gradient(140deg, #F0C779 0%, #E5A93C 100%);
  color: var(--color-primary-dark);
}
.btn-gold:hover { filter: brightness(1.05); }

.btn-block { width: 100%; }
.btn-lg { padding: 15px 26px; font-size: 16px; }

/* ==========================================================================
   Header / Nav — mobile base: logo + hamburger na 1ª linha,
   busca full-width na 2ª, links escondidos atrás do hamburger.
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #fff;
  border-bottom: 1px solid var(--color-border);
}

.nav-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  order: 1;
}
.logo-link img { height: 32px; width: auto; }

.menu-toggle {
  order: 2;
  margin-left: auto;
  display: block;
  background: none;
  border: none;
  font-size: 22px;
  cursor: pointer;
  color: var(--color-primary-dark);
  padding: 4px;
}

.nav-search {
  order: 3;
  flex-basis: 100%;
  display: flex;
  align-items: center;
  border: 1px solid var(--color-border);
  border-radius: 24px;
  padding: 8px 16px;
  background: var(--color-bg-soft);
}
.nav-search input {
  border: none;
  background: transparent;
  outline: none;
  width: 100%;
  font-family: var(--font-body);
  font-size: 14px;
}

.nav-links {
  order: 4;
  flex-basis: 100%;
  display: none;
  font-size: 14px;
  font-weight: 500;
}
.nav-links.open {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 4px 6px;
  border-top: 1px solid var(--color-border);
  margin-top: 4px;
}
.nav-links.open .nav-item-dropdown { width: 100%; }

.nav-links a { color: var(--color-secondary); }
.nav-links a:hover { color: var(--color-primary); }

.lang-switch {
  display: flex;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.lang-switch button {
  border: none;
  background: #fff;
  padding: 6px 12px;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-muted);
  cursor: pointer;
}
.lang-switch button.active {
  background: var(--color-primary);
  color: #fff;
}

/* ---------- Categorias (mega-menu) ---------- */

.nav-item-dropdown { position: relative; }

.dropdown-trigger {
  display: flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: none;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary-dark);
  cursor: pointer;
  padding: 8px 0;
}
.dropdown-trigger .caret {
  font-size: 10px;
  transition: transform 0.15s ease;
}
.nav-item-dropdown.open .dropdown-trigger .caret { transform: rotate(180deg); }

.dropdown-panel {
  display: none;
  position: static;
  background: transparent;
  padding: 4px 0 0 12px;
  min-width: 0;
  grid-template-columns: 1fr;
  gap: 2px;
}
.nav-item-dropdown.open .dropdown-panel { display: grid; }
.dropdown-panel a {
  display: block;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-secondary);
}
.dropdown-panel a:hover { background: var(--color-bg-soft); color: var(--color-primary); }

/* ==========================================================================
   Hero (home) — mobile base: texto empilhado, imagem oculta
   (menos peso de download em conexão móvel).
   ========================================================================== */

.hero {
  background: linear-gradient(120deg, var(--color-bg-dark) 0%, var(--color-primary) 100%);
  color: #fff;
  padding: 36px 0;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: center;
}
.hero h1 {
  color: #fff;
  font-size: 28px;
  line-height: 1.2;
  margin-bottom: 14px;
}
.hero p.lead {
  font-size: 15px;
  color: #D8E6E2;
  margin-bottom: 22px;
  max-width: 46ch;
}
.hero-actions { display: flex; flex-direction: column; gap: 12px; }
.hero-actions .btn { width: 100%; }

.hero-figure { display: none; }
.hero-figure img {
  border-radius: var(--radius-md);
  box-shadow: 0 20px 50px rgba(0,0,0,0.35);
}

.hero-stats {
  display: flex;
  gap: 20px;
  margin-top: 28px;
  flex-wrap: wrap;
}
.hero-stats div strong {
  display: block;
  font-size: 22px;
  font-family: var(--font-display);
  color: var(--color-gold);
}
.hero-stats div span {
  font-size: 12px;
  color: #C7D7D2;
}

/* ---------- Sections ---------- */

.section { padding: 40px 0; }
.section-soft { background: var(--color-bg-soft); }

.section-head {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  margin-bottom: 22px;
  gap: 10px;
}
.section-head h2 { margin: 0; font-size: 22px; }
.section-head p { color: var(--color-text-muted); margin: 4px 0 0; font-size: 14px; }
.section-head a.see-all {
  font-weight: 600;
  font-size: 14px;
  color: var(--color-accent);
  white-space: nowrap;
}

/* ==========================================================================
   Course cards / grid
   ========================================================================== */

.course-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.course-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
  display: flex;
  flex-direction: column;
}
.course-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}
.course-card .thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
}
.course-card .thumb img { width: 100%; height: 100%; object-fit: cover; }

.course-card .thumb .badge-overlay {
  position: absolute;
  top: 8px;
  left: 8px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.01em;
  padding: 3px 9px;
  border-radius: var(--radius-sm);
  color: var(--color-primary-dark);
  background: var(--color-gold);
}
.course-card .thumb .badge-overlay.soon {
  color: #fff;
  background: rgba(0, 0, 0, 0.55);
}

.course-card .body { padding: 12px 14px 14px; flex: 1; display: flex; flex-direction: column; }
.course-card .area-tag {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 5px;
}
.course-card h3 {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
  line-height: 1.35;
}
.course-card .instructor {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-bottom: 8px;
}
.course-card .price-row {
  margin-top: auto;
  padding-top: 9px;
  border-top: 1px solid var(--color-border);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 14px;
  color: var(--color-primary-dark);
}
.course-card .price-row.soon {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 12px;
  color: var(--color-text-muted);
}

/* ---------- Carrossel horizontal de cursos ---------- */

.carousel-wrap { position: relative; }

.carousel-track {
  display: flex;
  gap: 14px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  padding-bottom: 4px;
  margin: 0 -16px;
  padding-left: 16px;
  padding-right: 16px;
}
.carousel-track::-webkit-scrollbar { display: none; }

.carousel-track .course-card {
  flex: 0 0 190px;
  scroll-snap-align: start;
}

.carousel-btn {
  display: none;
}

/* ==========================================================================
   Áreas de estudo
   ========================================================================== */

.areas-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}
.area-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px 12px;
  text-align: center;
  font-weight: 600;
  font-size: 13px;
  color: var(--color-primary-dark);
  transition: border-color 0.15s ease, color 0.15s ease;
}
.area-card:hover { border-color: var(--color-accent); color: var(--color-accent); }

/* ---------- Value props ---------- */

.value-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
.value-item { text-align: left; }
.value-item .icon {
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--color-bg-soft);
  color: var(--color-accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
  margin-bottom: 14px;
}
.value-item h3 { font-size: 17px; }
.value-item p { color: var(--color-text-muted); font-size: 14px; margin: 0; }

/* ---------- CTA band ---------- */

.cta-band {
  background: var(--color-primary-dark);
  color: #fff;
  padding: 40px 0;
  text-align: center;
}
.cta-band h2 { color: #fff; font-size: 22px; }
.cta-band p { color: #C7D7D2; max-width: 60ch; margin: 0 auto 22px; font-size: 14px; }
.cta-band .btn { width: 100%; }

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  background: var(--color-bg-dark);
  color: #B9CBC6;
  padding: 40px 0 20px;
  font-size: 14px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  margin-bottom: 32px;
}
.footer-grid h4 {
  color: #fff;
  font-family: var(--font-body);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 14px;
}
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid li { margin-bottom: 10px; }
.footer-grid a:hover { color: #fff; }
.footer-logo img { height: 32px; margin-bottom: 12px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 12px;
  color: #8EA6A0;
  text-align: center;
}

/* ==========================================================================
   Course sales page — mobile base: hero, depois cartão de compra
   empilhado logo abaixo (sem sticky), com barra fixa de compra
   ancorada no rodapé da tela durante a rolagem.
   ========================================================================== */

.breadcrumb {
  font-size: 12px;
  color: var(--color-text-muted);
  padding: 12px 0;
}
.breadcrumb a { color: var(--color-accent); }

.course-hero {
  background: var(--color-bg-dark);
  color: #fff;
  padding: 24px 0 28px;
}
.course-hero .container {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
.course-hero-main { max-width: 640px; }
.course-hero .kicker {
  color: var(--color-gold);
  font-weight: 700;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 10px;
}
.course-hero h1 { color: #fff; font-size: 26px; margin-bottom: 12px; }
.course-hero .subtitle { color: #D8E6E2; font-size: 15px; margin-bottom: 16px; }

.meta-row {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  font-size: 13px;
  color: #C7D7D2;
  margin-bottom: 8px;
}
.meta-row .stars { color: var(--color-gold); letter-spacing: 2px; }

.instructor-line { font-size: 13px; color: #C7D7D2; }
.instructor-line strong { color: #fff; }

/* Cartão de compra: empilhado no mobile, fica "grudado" (sticky) só no desktop */
.purchase-card-wrap { position: relative; }
.purchase-card {
  background: #fff;
  color: var(--color-text);
  border-radius: var(--radius-md);
  box-shadow: 0 10px 28px rgba(0,0,0,0.25);
  overflow: hidden;
}
.purchase-card .thumb img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
.purchase-card .content { padding: 18px; }
.purchase-card .price {
  font-size: 26px;
  font-weight: 700;
  color: var(--color-primary-dark);
  font-family: var(--font-display);
  margin-bottom: 4px;
}
.purchase-card .price-note {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}
.purchase-card ul.includes {
  list-style: none;
  padding: 0;
  margin: 18px 0 0;
  font-size: 13px;
  color: var(--color-secondary);
}
.purchase-card ul.includes li {
  display: flex;
  gap: 8px;
  padding: 6px 0;
  border-top: 1px solid var(--color-border);
}
.purchase-card ul.includes li:first-child { border-top: none; }

/* Barra fixa de compra (mobile) */
.mobile-buy-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 150;
  background: #fff;
  border-top: 1px solid var(--color-border);
  box-shadow: 0 -6px 18px rgba(0,0,0,0.12);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.mobile-buy-bar .price {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  color: var(--color-primary-dark);
  white-space: nowrap;
}
.mobile-buy-bar .btn { padding: 10px 18px; font-size: 14px; }

body.has-mobile-buybar { padding-bottom: 68px; }

/* Body content */
.course-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  padding: 32px 0 56px;
}
.course-body .col-main section { margin-bottom: 36px; }
.course-body .col-main h2 { font-size: 21px; margin-bottom: 14px; }
.course-body .col-side { display: none; }

.box {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 18px;
}

.learn-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}
.learn-grid li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 14px;
  list-style: none;
}
.learn-grid li::before {
  content: "✓";
  color: var(--color-accent);
  font-weight: 700;
  flex-shrink: 0;
}

.curriculum-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  margin-bottom: 10px;
  overflow: hidden;
}
.curriculum-item summary {
  padding: 12px 14px;
  cursor: pointer;
  font-weight: 600;
  font-size: 14px;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--color-bg-soft);
}
.curriculum-item summary::-webkit-details-marker { display: none; }
.curriculum-item summary::after { content: "+"; font-size: 18px; color: var(--color-text-muted); }
.curriculum-item[open] summary::after { content: "–"; }
.curriculum-item p {
  padding: 12px 14px;
  margin: 0;
  font-size: 14px;
  color: var(--color-text-muted);
}

.instructor-card {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.instructor-card .avatar {
  width: 60px; height: 60px;
  border-radius: 50%;
  background: var(--color-bg-soft);
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display);
  font-size: 24px;
  color: var(--color-primary);
}
.instructor-card h3 { margin-bottom: 4px; font-size: 17px; }
.instructor-card .role { color: var(--color-text-muted); font-size: 13px; margin-bottom: 10px; }
.instructor-card p { font-size: 14px; color: var(--color-secondary); margin: 0 0 8px; }

.faq-item {
  border-bottom: 1px solid var(--color-border);
  padding: 14px 0;
}
.faq-item summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 14px;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 12px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; color: var(--color-text-muted); flex-shrink: 0; }
.faq-item[open] summary::after { content: "–"; }
.faq-item p { color: var(--color-text-muted); font-size: 14px; margin: 10px 0 0; }

.notice-placeholder {
  font-size: 12px;
  color: var(--color-text-muted);
  background: var(--color-bg-soft);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  margin-top: 16px;
}

/* ==========================================================================
   Breakpoints — tablet (≥641px) e desktop (≥961px).
   Só adicionam/ligam camadas; nada aqui é indispensável no mobile.
   ========================================================================== */

@media (min-width: 641px) {
  .container { padding: 0 24px; }

  .course-grid { grid-template-columns: repeat(3, 1fr); gap: 20px; }
  .areas-grid { grid-template-columns: repeat(3, 1fr); gap: 14px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-bottom { flex-direction: row; justify-content: space-between; text-align: left; }

  .section-head { flex-direction: row; justify-content: space-between; align-items: flex-end; }

  .hero h1 { font-size: 34px; }
  .hero-actions { flex-direction: row; }
  .hero-actions .btn { width: auto; }

  .cta-band .btn { width: auto; }

  .instructor-card .avatar { width: 84px; height: 84px; font-size: 30px; }

  .course-hero h1 { font-size: 30px; }
}

@media (min-width: 961px) {
  .nav-bar { flex-wrap: nowrap; gap: 24px; padding: 14px 24px; }
  .logo-link img { height: 40px; }
  .menu-toggle { display: none; }
  .nav-search { order: 0; flex-basis: auto; flex: 1; max-width: 560px; }
  .nav-links {
    order: 0;
    flex-basis: auto;
    display: flex !important;
    flex-direction: row;
    align-items: center;
    gap: 20px;
    margin-left: auto;
    padding: 0;
    border-top: none;
  }
  .nav-links.open { position: static; box-shadow: none; }

  .dropdown-panel {
    display: none;
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card-hover);
    padding: 12px;
    min-width: 460px;
    grid-template-columns: 1fr 1fr;
    gap: 4px;
    z-index: 200;
  }
  .nav-item-dropdown.open .dropdown-panel { display: grid; }

  .hero { padding: 72px 0; }
  .hero-inner { grid-template-columns: 1.1fr 0.9fr; gap: 48px; }
  .hero h1 { font-size: 44px; }
  .hero p.lead { font-size: 18px; }
  .hero-figure { display: block; }

  .section { padding: 64px 0; }
  .section-head h2 { font-size: 30px; }

  .course-grid { grid-template-columns: repeat(4, 1fr); gap: 24px; }
  .carousel-track { margin: 0; padding-left: 0; padding-right: 0; }
  .carousel-track .course-card { flex-basis: 260px; }
  .carousel-btn {
    display: flex;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--color-border);
    background: #fff;
    box-shadow: var(--shadow-card);
    align-items: center;
    justify-content: center;
    font-size: 15px;
    color: var(--color-primary-dark);
    cursor: pointer;
    z-index: 5;
  }
  .carousel-btn.prev { left: -20px; }
  .carousel-btn.next { right: -20px; }
  .carousel-btn:hover { color: var(--color-accent); }

  .areas-grid { grid-template-columns: repeat(4, 1fr); gap: 16px; }
  .area-card { padding: 20px; font-size: 14px; }

  .value-grid { grid-template-columns: repeat(3, 1fr); gap: 32px; }

  .footer-grid { grid-template-columns: 1.6fr 1fr 1fr 1fr 1fr; gap: 32px; }

  .course-hero { padding: 40px 0 96px; }
  .course-hero .container { grid-template-columns: 1.6fr 1fr; gap: 40px; }
  .course-hero h1 { font-size: 36px; }
  .course-hero .subtitle { font-size: 17px; }

  .purchase-card { position: sticky; top: 96px; box-shadow: 0 20px 50px rgba(0,0,0,0.35); }

  .mobile-buy-bar { display: none; }
  body.has-mobile-buybar { padding-bottom: 0; }

  .course-body { grid-template-columns: 1.6fr 1fr; gap: 40px; padding: 48px 0 80px; }
  .course-body .col-main h2 { font-size: 24px; }
  .learn-grid { grid-template-columns: 1fr 1fr; gap: 12px 24px; }
  .box { padding: 24px; }
}