/* ============================================================
   ISF: Instituto Educacional Metodista Bispo Scilla Franco
   Design system
============================================================ */


:root{
  --coral:        #CF3822;
  --coral-dark:   #A82D1B;
  --coral-tint:   #FBE2DC;
  --charcoal:     #333333;
  --charcoal-70:  #5A5A5C;
  --charcoal-40:  #9A9A9C;
  --cream:        #FAF6F0;
  --cream-alt:    #F1E9DC;
  --white:        #FFFFFF;
  --ink:          #262524;

  --display: 'Bebas Neue', Impact, sans-serif;
  --body:    'Montserrat', Arial, sans-serif;

  --max: 1180px;
  --radius: 4px;
  --shadow: 0 10px 30px rgba(38,37,36,.10);
}

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

html{ scroll-behavior:smooth; scroll-padding-top:110px; }

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
}

body{
  font-family:var(--body);
  color:var(--ink);
  background:var(--cream);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}

img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ list-style:none; }

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

/* grain overlay, used on dark photo sections */
.grain{ position:relative; isolation:isolate; }
.grain::after{
  content:"";
  position:absolute; inset:0;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.35'/%3E%3C/svg%3E");
  opacity:.18;
  mix-blend-mode:overlay;
  pointer-events:none;
  z-index:1;
}

/* ============ Typography helpers ============ */
h1,h2,h3,h4{ font-family:var(--display); letter-spacing:.02em; line-height:1.05; color:var(--ink); text-transform:uppercase; }
h1{ font-size:clamp(2.6rem,6vw,4.6rem); }
h2{ font-size:clamp(2rem,4.4vw,3rem); }
h3{ font-size:1.5rem; }
h4{ font-size:1.15rem; }

.script{
  color:var(--coral);
  display:inline-block;
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:.6em;
  font-family:var(--body);
  font-weight:700;
  font-size:.78rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--coral);
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:28px; height:2px;
  background:var(--coral);
  display:inline-block;
}

.lede{
  font-size:1.1rem;
  color:var(--charcoal-70);
  max-width:640px;
}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;
  align-items:center;
  gap:.5em;
  font-family:var(--body);
  font-weight:700;
  font-size:.85rem;
  letter-spacing:.06em;
  text-transform:uppercase;
  padding:15px 30px;
  border-radius:2px;
  border:2px solid transparent;
  cursor:pointer;
  transition:all .3s cubic-bezier(.4,0,.2,1);
}
.btn-primary{ background:var(--coral); color:var(--white); border-color:var(--coral); }
.btn-primary:hover{ background:var(--coral-dark); border-color:var(--coral-dark); }
.btn-ghost{ background:transparent; color:var(--white); border-color:rgba(255,255,255,.6); }
.btn-ghost:hover{ background:rgba(255,255,255,.12); border-color:var(--white); }
.btn-outline{ background:transparent; color:var(--ink); border-color:var(--ink); }
.btn-outline:hover{ background:var(--ink); color:var(--white); }
.btn-block{ width:100%; justify-content:center; }

/* ============ Header ============ */
.site-header{
  position:fixed; top:0; left:0; right:0; z-index:200;
  background:transparent;
  backdrop-filter:none;
  border-bottom:1px solid transparent;
  transition:background .35s cubic-bezier(.4,0,.2,1), border-color .35s ease, box-shadow .35s cubic-bezier(.4,0,.2,1), backdrop-filter .35s ease;
}
.site-header.is-scrolled{
  background:rgba(250,246,240,.96);
  backdrop-filter:blur(6px);
  border-bottom-color:rgba(38,37,36,.08);
  box-shadow:0 8px 24px rgba(38,37,36,.08);
}
.site-header .container{
  display:flex; align-items:center; justify-content:space-between;
  padding-top:20px; padding-bottom:20px;
  gap:24px;
  transition:padding .35s cubic-bezier(.4,0,.2,1);
}
.site-header.is-scrolled .container{ padding-top:10px; padding-bottom:10px; }
.site-header.is-scrolled .site-logo img{ height:38px; }
.site-logo img{ transition:height .35s cubic-bezier(.4,0,.2,1), filter .35s ease; }
.site-header:not(.is-scrolled) .site-logo img{ filter:brightness(0) invert(1); }
.site-logo{ display:flex; align-items:center; gap:10px; flex-shrink:0; }
.site-logo img{ height:46px; width:auto; }

.site-nav ul{ display:flex; align-items:center; gap:34px; }
.site-nav a{
  font-family:var(--body); font-weight:600; font-size:.83rem;
  letter-spacing:.06em; text-transform:uppercase;
  color:var(--white);
  position:relative;
  padding:6px 0;
  transition:color .35s ease;
}
.site-header.is-scrolled .site-nav a{ color:var(--ink); }
.site-nav a::after{
  content:""; position:absolute; left:0; bottom:0; height:2px; width:0;
  background:var(--coral); transition:width .2s ease;
}
.site-nav a:hover::after, .site-nav a.active::after{ width:100%; }
.site-nav a.active, .site-nav a:hover{ color:var(--coral); }
.nav-chevron{ width:10px; height:10px; margin-left:4px; vertical-align:-1px; transition:transform .2s ease; }
.has-dropdown:hover .nav-chevron, .has-dropdown:focus-within .nav-chevron{ transform:rotate(180deg); }

.has-dropdown{ position:relative; }
.dropdown{
  position:absolute; top:100%; left:-16px; margin-top:14px;
  background:var(--white); box-shadow:var(--shadow); border-radius:var(--radius);
  min-width:250px; padding:8px 0;
  opacity:0; visibility:hidden; transform:translateY(6px);
  transition:all .18s ease;
}
.has-dropdown:hover .dropdown, .has-dropdown:focus-within .dropdown{ opacity:1; visibility:visible; transform:translateY(0); }
.dropdown a{
  display:flex; justify-content:space-between; gap:10px;
  padding:11px 20px; font-size:.78rem; letter-spacing:.03em;
  color:var(--ink);
}
.dropdown a::after{ display:none; }
.dropdown a:hover{ background:var(--cream-alt); color:var(--coral); }
.dropdown .tag{
  font-family:var(--body); font-weight:700; font-size:.62rem;
  padding:2px 7px; border-radius:20px; letter-spacing:.03em;
}
.tag-aberto{ background:#E4F3E7; color:#2B7A3B; }
.tag-encerrado{ background:#F1E9DC; color:var(--charcoal-40); }

.nav-cta{ display:flex; align-items:center; gap:20px; }
.nav-cta .btn{
  border-radius:999px;
  background:var(--coral); border-color:var(--coral); color:var(--white);
}
.nav-cta .btn:hover{ background:var(--coral-dark); border-color:var(--coral-dark); }
.menu-toggle{
  display:none; flex-direction:column; gap:5px; background:none; border:0; cursor:pointer; padding:6px;
}
.menu-toggle span{ width:24px; height:2px; background:var(--white); display:block; transition:background .35s ease; }
.site-header.is-scrolled .menu-toggle span{ background:var(--ink); }

/* ============ Hero ============ */
.hero{
  position:relative;
  min-height:88vh;
  display:flex; align-items:flex-end;
  background:var(--ink) center/cover no-repeat;
  color:var(--white);
  overflow:hidden;
}
.hero-video{
  position:absolute; inset:0;
  width:100%; height:100%;
  object-fit:cover;
  z-index:0;
}
.hero::before{
  content:"";
  position:absolute; inset:0;
  background:
    radial-gradient(60% 55% at 50% 66%, rgba(14,13,12,.6) 0%, rgba(14,13,12,0) 100%),
    linear-gradient(180deg, rgba(28,26,24,.68) 0%, rgba(22,20,19,.72) 42%, rgba(14,13,12,.95) 100%);
  z-index:1;
}
.hero-content{
  position:relative; z-index:2; padding:80px 0 64px;
  display:flex; flex-direction:column; align-items:center;
  text-align:center;
}
.hero-content .eyebrow{ color:var(--coral); }
.hero-content h1{ color:var(--white); max-width:900px; text-shadow:0 2px 20px rgba(0,0,0,.5); }
.hero-content .lede{ color:rgba(255,255,255,.85); margin:18px auto 0; }
.hero-actions{ display:flex; gap:16px; margin-top:36px; flex-wrap:wrap; justify-content:center; }

.page-hero{
  position:relative;
  padding:150px 0 70px;
  background:var(--ink) center/cover no-repeat;
  color:var(--white);
  overflow:hidden;
}
.page-hero::before{
  content:"";
  position:absolute; inset:0;
  background:linear-gradient(180deg, rgba(24,22,20,.72), rgba(24,22,20,.72));
  z-index:1;
}
.page-hero .container{ position:relative; z-index:2; }
.page-hero h1{ color:var(--white); }
.page-hero .breadcrumb{
  margin-top:16px; font-size:.8rem; font-weight:600; letter-spacing:.04em;
  text-transform:uppercase; color:rgba(255,255,255,.7);
}
.page-hero .breadcrumb a{ color:var(--white); }
.page-hero .breadcrumb a:hover{ text-decoration:underline; }

/* ============ Sections ============ */
section{ padding:96px 0; }
.section-alt{ background:var(--cream-alt); }
.section-dark{ background:var(--ink); color:var(--white); }
.section-dark h2{ color:var(--white); }
.section-head{ max-width:680px; margin-bottom:56px; }
.section-head.center{ margin-left:auto; margin-right:auto; text-align:center; }

/* ============ Cards ============ */
.grid{ display:grid; gap:28px; }
.grid-2{ grid-template-columns:repeat(2,1fr); }
.grid-3{ display:flex; flex-wrap:wrap; justify-content:center; gap:28px; }
.grid-3 > *{ flex:0 1 calc(33.333% - 19px); }

.card{
  background:var(--white);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:36px 30px;
  height:100%;
  display:flex; flex-direction:column;
}

.card-icon{
  width:56px; height:56px; border-radius:50%;
  background:var(--coral-tint); color:var(--coral);
  display:flex; align-items:center; justify-content:center;
  margin-bottom:22px; flex-shrink:0;
}
.card-icon svg{ width:26px; height:26px; }

.course-card{
  background:var(--white);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  overflow:hidden;
  display:flex; flex-direction:column;
  transition:transform .35s cubic-bezier(.16,.8,.3,1), box-shadow .35s cubic-bezier(.16,.8,.3,1);
}
.course-card:hover{ transform:translateY(-6px); box-shadow:0 18px 40px rgba(38,37,36,.16); }
.course-card-top{
  background:var(--ink);
  padding:30px 30px 26px;
  position:relative;
}
.course-card-top.tone-pov{ background:#004AAD; }
.course-card-top.tone-clt{ background:#B94028; }
.course-card-top.tone-cpri{ background:#10A336; }
.course-card-top.tone-acp{ background:#6772AE; }
.course-card-top.tone-pca{ background:#F79355; }

/* Per-course accent tone, scoped to <main> on each course page:
   overrides --coral/--coral-dark for that page's content only —
   header and footer keep the brand coral. */
main.tone-pov{ --coral:#004AAD; --coral-dark:#003B8A; }
main.tone-clt{ --coral:#B94028; --coral-dark:#943320; }
main.tone-cpri{ --coral:#0B7A28; --coral-dark:#085F1F; }
main.tone-acp{ --coral:#4F5A9A; --coral-dark:#3E477A; }
main.tone-pca{ --coral:#B85A14; --coral-dark:#934810; }
.course-card-top .icon{ width:44px; height:44px; color:var(--cream); margin-bottom:18px; }
.course-card-top .sigla{ font-family:var(--display); font-size:2.1rem; color:var(--white); letter-spacing:.03em; }
.course-card-top .nome{ font-family:var(--body); font-weight:600; font-size:.82rem; color:rgba(255,255,255,.75); letter-spacing:.02em; margin-top:4px; text-transform:none; }
.course-card-body{ padding:26px 30px 30px; flex:1; display:flex; flex-direction:column; }
.course-card-body p{ color:var(--charcoal-70); font-size:.92rem; flex:1; }
.status-badge{
  display:inline-flex; align-items:center; gap:6px;
  font-size:.68rem; font-weight:700; letter-spacing:.05em; text-transform:uppercase;
  padding:5px 11px; border-radius:20px; margin-bottom:16px; align-self:flex-start;
}
.status-aberto{ background:#E4F3E7; color:#2B7A3B; }
.status-encerrado{ background:#F1E9DC; color:var(--charcoal-40); }
.course-card-body .saiba-mais{
  margin-top:20px; font-weight:700; font-size:.8rem; letter-spacing:.04em; text-transform:uppercase; color:var(--coral);
  display:inline-flex; align-items:center; gap:8px;
}
.course-card-body .saiba-mais svg{ width:16px; height:16px; transition:transform .2s ease; }
.course-card:hover .saiba-mais svg{ transform:translateX(4px); }

/* ============ Stats band ============ */
.stats{
  display:grid; grid-template-columns:repeat(4,1fr); gap:20px;
  text-align:center;
}
.stats .stat b{ display:block; font-family:var(--display); font-size:3rem; color:var(--coral); letter-spacing:.02em; }
.stats .stat span{ font-size:.8rem; letter-spacing:.03em; text-transform:uppercase; color:rgba(255,255,255,.7); font-weight:600; }

/* ============ Photo + text split ============ */
.split{ display:grid; grid-template-columns:1fr 1fr; gap:64px; align-items:center; }
.split img{ border-radius:var(--radius); box-shadow:var(--shadow); width:100%; height:460px; object-fit:cover; }
.split-text .lede{ max-width:none; }

/* ============ Photo collage (floating) ============ */
.photo-collage{ position:relative; height:480px; }

.collage-main{
  position:absolute; inset:8% 10%;
  border-radius:16px;
  overflow:hidden;
  box-shadow:0 24px 50px rgba(38,37,36,.22);
  z-index:1;
}
.collage-main img{ width:100%; height:100%; object-fit:cover; display:block; }
.collage-main::after{
  content:""; position:absolute; inset:0;
  background:var(--coral); mix-blend-mode:multiply; opacity:.32;
  pointer-events:none;
}

.collage-item{
  position:absolute;
  border-radius:12px;
  overflow:hidden;
  box-shadow:0 16px 34px rgba(38,37,36,.24);
  z-index:2;
}
.collage-item img{ width:100%; height:100%; object-fit:cover; display:block; }
.collage-item::after{
  content:""; position:absolute; inset:0;
  background:var(--coral); mix-blend-mode:multiply; opacity:.32;
  pointer-events:none;
}

.collage-1{ width:30%; height:32%; left:-4%; top:-4%; }
.collage-2{ width:28%; height:30%; right:-4%; top:4%; }
.collage-3{ width:28%; height:30%; left:2%; bottom:-6%; }
.collage-4{ width:30%; height:32%; right:-2%; bottom:-4%; }

@media (prefers-reduced-motion: no-preference){
  .collage-main, .collage-item{ animation:photo-float 6s ease-in-out infinite; }
  .collage-main{ animation-duration:7s; animation-delay:-2.4s; }
  .collage-1{ animation-duration:6.5s; animation-delay:-1s; }
  .collage-2{ animation-duration:5.5s; animation-delay:-3.2s; }
  .collage-3{ animation-duration:6.8s; animation-delay:-.4s; }
  .collage-4{ animation-duration:5.8s; animation-delay:-2.1s; }
}
@keyframes photo-float{
  0%, 100%{ transform:translateY(0); }
  50%{ transform:translateY(-14px); }
}

@media (max-width:960px){
  .photo-collage{ height:auto; display:block; }
  .collage-main{ position:static; width:100%; height:220px; margin-bottom:12px; }
  .collage-small{ display:grid; grid-template-columns:1fr 1fr; gap:12px; }
  .collage-item{ position:static; width:100%; height:140px; transform:none; }
  @media (prefers-reduced-motion: no-preference){
    .collage-item{ animation-name:photo-float-flat; }
  }
}
@keyframes photo-float-flat{
  0%, 100%{ transform:translateY(0); }
  50%{ transform:translateY(-10px); }
}

/* ============ Values list ============ */
.values-grid{ display:flex; flex-wrap:wrap; justify-content:center; gap:24px; }
.value-item{ border-top:3px solid var(--coral); padding-top:18px; flex:0 1 calc(33.333% - 16px); }
.value-item h3{ text-transform:none; font-family:var(--body); font-weight:700; font-size:1rem; margin-bottom:8px; }
.value-item p{ color:var(--charcoal-70); font-size:.9rem; }

/* ============ Director / team cards ============ */
.team-card{ text-align:left; }
.avatar{
  width:76px; height:76px; border-radius:50%;
  background:var(--coral); color:var(--white);
  display:flex; align-items:center; justify-content:center;
  font-family:var(--display); font-size:1.6rem; letter-spacing:.03em;
  margin-bottom:20px;
  overflow:hidden;
}
.avatar img{ width:100%; height:100%; object-fit:cover; }
.team-card h3{ text-transform:none; font-family:var(--body); font-weight:700; font-size:1.05rem; }
.team-card .cargo{ color:var(--coral); font-weight:700; font-size:.75rem; letter-spacing:.04em; text-transform:uppercase; margin:6px 0 14px; }
.team-card p{ font-size:.87rem; color:var(--charcoal-70); }

/* ============ Info blocks (course pages) ============ */
.info-grid{ display:grid; grid-template-columns:repeat(2,1fr); gap:24px; }
.info-block{ background:var(--white); border-radius:var(--radius); padding:28px; box-shadow:var(--shadow); }
.info-block h3{ text-transform:uppercase; font-size:.85rem; letter-spacing:.06em; color:var(--coral); margin-bottom:14px; }
.info-block p, .info-block li{ font-size:.93rem; color:var(--charcoal-70); }
.info-block ul{ display:flex; flex-direction:column; gap:8px; }
.info-block li{ position:relative; padding-left:20px; }
.info-block li::before{ content:"•"; position:absolute; left:0; color:var(--coral); }

.content-list{ display:grid; grid-template-columns:repeat(2,1fr); gap:12px 28px; margin-top:10px; }
.content-list li{
  padding:14px 0; border-bottom:1px solid rgba(38,37,36,.1);
  font-size:.92rem; font-weight:600; display:flex; align-items:center; gap:12px;
}
.content-list li::before{ content:""; width:6px; height:6px; border-radius:50%; background:var(--coral); flex-shrink:0; }

.steps{ counter-reset:step; display:flex; flex-direction:column; gap:0; }
.step{ display:flex; gap:24px; padding:26px 0; border-bottom:1px solid rgba(38,37,36,.1); }
.step:last-child{ border-bottom:0; }
.step-num{
  counter-increment:step; font-family:var(--display); font-size:1.8rem; color:var(--coral);
  width:48px; flex-shrink:0;
}
.step-num::before{ content: counter(step, decimal-leading-zero); }
.step-body h3{ text-transform:none; font-family:var(--body); font-weight:700; font-size:1rem; margin-bottom:6px; }
.step-body p{ color:var(--charcoal-70); font-size:.9rem; }

/* ============ CTA band ============ */
.cta-band{
  background:var(--coral); color:var(--white);
  border-radius:var(--radius);
  padding:56px; display:flex; align-items:center; justify-content:space-between; gap:40px; flex-wrap:wrap;
}
.cta-band h2{ color:var(--white); margin:0; }
.cta-band .btn-ghost{ border-color:rgba(255,255,255,.7); color:var(--white); }
.cta-band .btn-ghost:hover{ background:rgba(255,255,255,.18); border-color:var(--white); }

/* ============ Footer ============ */
.site-footer{ background:var(--ink); color:rgba(255,255,255,.7); padding:80px 0 0; }
.footer-grid{ display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:40px; padding-bottom:60px; border-bottom:1px solid rgba(255,255,255,.1); }
.footer-brand img{ height:40px; margin-bottom:18px; }
.footer-brand p{ font-size:.85rem; max-width:260px; color:rgba(255,255,255,.55); }
.footer-social{ display:flex; gap:12px; margin-top:22px; }
.footer-social a{
  width:36px; height:36px; border-radius:50%; border:1px solid rgba(255,255,255,.25);
  display:flex; align-items:center; justify-content:center; transition:all .3s cubic-bezier(.4,0,.2,1);
}
.footer-social a:hover{ background:var(--coral); border-color:var(--coral); }
.footer-social svg{ width:16px; height:16px; color:var(--white); }
.footer-col h3{ font-family:var(--body); text-transform:uppercase; font-size:.78rem; letter-spacing:.08em; color:var(--white); margin-bottom:20px; }
.footer-col ul{ display:flex; flex-direction:column; gap:12px; }
.footer-col a{ font-size:.87rem; color:rgba(255,255,255,.65); }
.footer-col a:hover{ color:var(--coral); }
.footer-bottom{ padding:26px 0; display:flex; justify-content:space-between; gap:20px; flex-wrap:wrap; font-size:.78rem; color:rgba(255,255,255,.45); }

/* ============ WhatsApp float ============ */
.whatsapp-float{
  position:fixed; bottom:26px; right:26px; z-index:300;
  width:58px; height:58px; border-radius:50%;
  background:#25D366; color:#fff;
  display:flex; align-items:center; justify-content:center;
  box-shadow:0 8px 22px rgba(37,211,102,.45);
  transition:transform .2s ease;
}
.whatsapp-float:hover{ transform:scale(1.08); transition:transform .35s cubic-bezier(.34,1.56,.64,1); }
.whatsapp-float svg{ width:28px; height:28px; }

/* ============ Scroll progress bar ============ */
.scroll-progress{
  position:fixed; top:0; left:0; height:3px; width:0%;
  background:linear-gradient(90deg, var(--coral), var(--coral-dark));
  z-index:500;
  transition:width .15s cubic-bezier(.4,0,.2,1);
}

/* ============ Scroll-reveal ============ */
@media (prefers-reduced-motion: no-preference){
  .reveal{
    opacity:0;
    transform:translateY(32px);
    transition:opacity .9s cubic-bezier(.16,.8,.3,1), transform .9s cubic-bezier(.16,.8,.3,1);
  }
  .reveal.is-visible{ opacity:1; transform:translateY(0); }

  .reveal-stagger > *{
    opacity:0;
    transform:translateY(32px);
    transition:opacity .8s cubic-bezier(.16,.8,.3,1), transform .8s cubic-bezier(.16,.8,.3,1);
  }
  .reveal-stagger.is-visible > *{ opacity:1; transform:translateY(0); }
  .reveal-stagger.is-visible > *:nth-child(1){ transition-delay:.04s; }
  .reveal-stagger.is-visible > *:nth-child(2){ transition-delay:.12s; }
  .reveal-stagger.is-visible > *:nth-child(3){ transition-delay:.2s; }
  .reveal-stagger.is-visible > *:nth-child(4){ transition-delay:.28s; }
  .reveal-stagger.is-visible > *:nth-child(5){ transition-delay:.36s; }
  .reveal-stagger.is-visible > *:nth-child(n+6){ transition-delay:.42s; }
}

/* hero background photos get a slow, subtle drift via JS (backgroundPosition);
   keep the paint smooth by hinting the browser */
.page-hero{ background-position:center calc(var(--focus-y,50%) + var(--parallax,0px)); }

/* ============ Utilities ============ */

/* ============ Responsive ============ */
@media (max-width:960px){
  .site-nav, .nav-cta .btn{ display:none; }
  .menu-toggle{ display:flex; }
  .grid-3 > *{ flex:0 1 calc(50% - 14px); }
  .split{ grid-template-columns:1fr; gap:36px; }
  .split img{ height:300px; }
  .value-item{ flex-basis:100%; }
  .info-grid{ grid-template-columns:1fr; }
  .content-list{ grid-template-columns:1fr; }
  .footer-grid{ grid-template-columns:1fr 1fr; }
  .stats{ grid-template-columns:1fr 1fr; }
}
@media (max-width:640px){
  section{ padding:64px 0; }
  .grid-2{ grid-template-columns:1fr; }
  .grid-3 > *{ flex:0 1 100%; }
  .cta-band{ flex-direction:column; text-align:center; padding:40px 28px; }
  .footer-grid{ grid-template-columns:1fr; }
  .stats{ grid-template-columns:1fr 1fr; }
  .hero-content{ padding:60px 0 48px; }
  .page-hero{ padding:130px 0 50px; }
}

/* ============ Mobile nav (drawer) ============ */
.mobile-nav{
  position:fixed; inset:0; background:var(--ink); z-index:400;
  display:flex; flex-direction:column; padding:100px 32px 40px;
  transform:translateX(100%); visibility:hidden; transition:transform .3s ease, visibility 0s linear .3s;
}
.mobile-nav.open{ transform:translateX(0); visibility:visible; transition:transform .3s ease, visibility 0s; }
body.menu-open{ overflow:hidden; }
.mobile-nav a{
  font-family:var(--display); font-size:2rem; color:var(--white);
  padding:14px 0; border-bottom:1px solid rgba(255,255,255,.1); letter-spacing:.03em;
}
.mobile-nav .close-menu{
  position:absolute; top:30px; right:32px; background:none; border:0; color:var(--white);
  font-size:2rem; cursor:pointer; line-height:1;
}
.mobile-nav a:has(+ .mobile-sub){ border-bottom:0; padding-bottom:6px; }
.mobile-sub{
  display:flex; flex-direction:column; gap:2px;
  margin:0 0 14px 0; padding:2px 0 14px 18px;
  border-left:2px solid var(--coral);
  border-bottom:1px solid rgba(255,255,255,.1);
  border-bottom-left-radius:0;
}
.mobile-sub a{ font-family:var(--body); font-size:.95rem; letter-spacing:.06em; text-transform:uppercase; font-weight:600; border-bottom:0; padding:9px 0; color:rgba(255,255,255,.8); }

/* ============ Acessibilidade ============ */
.skip-link{
  position:fixed; top:-60px; left:16px; z-index:1000;
  background:var(--ink); color:var(--white); padding:12px 18px; border-radius:0 0 6px 6px;
  font-weight:700; font-size:.85rem; transition:top .2s ease;
}
.skip-link:focus{ top:0; }
main:focus{ outline:none; }
a:focus-visible, button:focus-visible, .btn:focus-visible, .course-card:focus-visible{
  outline:3px solid var(--coral); outline-offset:3px; border-radius:4px;
}
.site-header:not(.is-scrolled) a:focus-visible, .site-header:not(.is-scrolled) button:focus-visible,
.mobile-nav a:focus-visible, .mobile-nav button:focus-visible, .site-footer a:focus-visible, .hero a:focus-visible, .page-hero a:focus-visible, .cta-band a:focus-visible{
  outline-color:var(--white);
}
.btn-primary:focus-visible, .nav-cta .btn:focus-visible{ outline-color:var(--ink); }

/* ============ PCA: grade por semestre ============ */
.sem-grid{ display:flex; flex-wrap:wrap; justify-content:center; gap:24px; }
.sem-block{ flex:0 1 calc(33.333% - 16px); min-width:260px; }
.sem-block h3{ font-family:var(--display); font-weight:400; font-size:1.6rem; letter-spacing:.04em; text-transform:none; color:var(--coral); margin-bottom:16px; }
@media (max-width:720px){ .sem-block{ flex-basis:100%; } }