/* ================================================
   DANIELLY CÔAS — style.css
   Design System: 4px grid · OKLCH colors · Nunito + Source Serif 4
   ================================================ */

/* ── RESET & BASE ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

/* ── DESIGN TOKENS ── */
:root {
  /* Spacing (4px grid) */
  --sp-1:  4px;
  --sp-2:  8px;
  --sp-3:  12px;
  --sp-4:  16px;
  --sp-5:  20px;
  --sp-6:  24px;
  --sp-8:  32px;
  --sp-10: 40px;
  --sp-12: 48px;
  --sp-16: 64px;
  --sp-20: 80px;
  --sp-24: 96px;

  /* Colors — OKLCH */
  /* Primary: azul profundo #2D4A7A → oklch(≈0.38 0.10 255) */
  --primary-50:  oklch(0.96 0.02 255);
  --primary-100: oklch(0.91 0.04 255);
  --primary-200: oklch(0.82 0.07 255);
  --primary-300: oklch(0.68 0.10 255);
  --primary-500: oklch(0.42 0.11 255);   /* ≈ #2D4A7A */
  --primary-600: oklch(0.35 0.10 255);
  --primary-700: oklch(0.28 0.09 255);
  --primary-900: oklch(0.18 0.07 255);

  /* Accent verde #3A9E6F → oklch(≈0.62 0.13 158) */
  --green-100:   oklch(0.94 0.05 158);
  --green-200:   oklch(0.87 0.08 158);
  --green-500:   oklch(0.60 0.14 158);   /* ≈ #3A9E6F */
  --green-600:   oklch(0.52 0.13 158);
  --green-700:   oklch(0.44 0.11 158);

  /* Categorias */
  --cat-tdah:      oklch(0.58 0.16 25);   /* vermelho-coral */
  --cat-tdah-bg:   oklch(0.96 0.04 25);
  --cat-ee:        oklch(0.60 0.14 190);  /* teal */
  --cat-ee-bg:     oklch(0.95 0.04 190);
  --cat-psi:       oklch(0.50 0.12 270);  /* índigo */
  --cat-psi-bg:    oklch(0.95 0.03 270);

  /* Neutros */
  --bg:           oklch(0.98 0.005 95);   /* #FAFAF5 */
  --bg-alt:       oklch(0.96 0.007 95);
  --text-primary: oklch(0.15 0.03 265);   /* #1A1A2E */
  --text-body:    oklch(0.30 0.02 265);
  --text-muted:   oklch(0.50 0.02 265);
  --border:       oklch(0.88 0.01 265);

  /* Shadows */
  --shadow-sm:  0 1px 3px oklch(0.15 0.05 255 / 0.08);
  --shadow-md:  0 4px 16px oklch(0.15 0.05 255 / 0.10);
  --shadow-lg:  0 8px 32px oklch(0.15 0.05 255 / 0.13);
  --shadow-xl:  0 16px 48px oklch(0.15 0.05 255 / 0.16);

  /* Radius */
  --r-sm:  8px;
  --r-md:  12px;
  --r-lg:  16px;
  --r-xl:  24px;
  --r-2xl: 32px;

  /* Fonts */
  --font-display: 'Nunito', sans-serif;
  --font-body:    'Source Serif 4', serif;

  /* Layout */
  --container:     1160px;
  --navbar-height: 72px;

  /* Transitions */
  --t-fast:   150ms ease;
  --t-normal: 250ms ease;
  --t-slow:   400ms ease;
}

/* ── GLOBAL ── */
body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text-body);
  background: var(--bg);
  overflow-x: hidden;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }
ul, ol { list-style: none; }

/* ── CONTAINER ── */
.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--sp-6);
}

/* ── BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  line-height: 1;
  padding: 14px 28px;
  border-radius: var(--r-lg);
  transition: background var(--t-fast), transform var(--t-fast), box-shadow var(--t-fast);
  white-space: nowrap;
}

.btn--primary {
  background: var(--green-500);
  color: white;
  box-shadow: 0 2px 8px oklch(0.60 0.14 158 / 0.30);
}
.btn--primary:hover {
  background: var(--green-600);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px oklch(0.60 0.14 158 / 0.35);
}
.btn--primary:active { transform: translateY(0); }

.btn--sm {
  font-size: 0.875rem;
  padding: 10px 18px;
  border-radius: var(--r-md);
}

.btn--full { width: 100%; justify-content: center; }

/* ── SECTION LABELS & TITLES ── */
.section-label {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--green-600);
  margin-bottom: var(--sp-2);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 800;
  line-height: 1.2;
  color: var(--primary-500);
  margin-bottom: var(--sp-4);
}

.section-desc {
  font-size: 1.0625rem;
  color: var(--text-muted);
  max-width: 520px;
  line-height: 1.7;
}

.section-header {
  margin-bottom: var(--sp-12);
}

/* ══════════════════════════════════════
   NAVBAR
══════════════════════════════════════ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--navbar-height);
  background: oklch(0.98 0.005 95 / 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
  transition: box-shadow var(--t-normal);
}

.navbar.scrolled {
  box-shadow: var(--shadow-md);
}

.navbar__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar__logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--primary-500);
  letter-spacing: -0.01em;
}
.navbar__logo img {
  height: 56px;
  width: 56px;
  display: block;
  flex-shrink: 0;
}

.navbar__nav {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.navbar__link {
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-body);
  padding: var(--sp-2) var(--sp-4);
  border-radius: var(--r-md);
  transition: color var(--t-fast), background var(--t-fast);
}

.navbar__link:hover {
  color: var(--primary-500);
  background: var(--primary-50);
}

.navbar__link--cta {
  color: var(--green-600);
  background: var(--green-100);
}
.navbar__link--cta:hover {
  background: var(--green-200);
  color: var(--green-700);
}

/* Hamburger */
.navbar__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--sp-2);
  border-radius: var(--r-sm);
}
.navbar__hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--primary-500);
  border-radius: 2px;
  transition: transform var(--t-normal), opacity var(--t-normal);
}
.navbar__hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.navbar__hamburger.open span:nth-child(2) { opacity: 0; }
.navbar__hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ══════════════════════════════════════
   HERO
══════════════════════════════════════ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--navbar-height);
  overflow: hidden;
}

.hero__bg-shape {
  position: absolute;
  top: -20%;
  right: -10%;
  width: 60%;
  aspect-ratio: 1;
  background: radial-gradient(
    ellipse at 60% 40%,
    oklch(0.90 0.04 255 / 0.6) 0%,
    oklch(0.94 0.03 190 / 0.3) 50%,
    transparent 75%
  );
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: var(--sp-16);
  padding-block: var(--sp-20);
}

/* Text side */
.hero__eyebrow {
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--green-600);
  margin-bottom: var(--sp-4);
  opacity: 0;
  animation: fadeUp 0.6s ease 0.1s forwards;
}

.hero__name {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 4.5vw, 3.5rem);
  font-weight: 900;
  line-height: 1.1;
  color: var(--primary-500);
  letter-spacing: -0.02em;
  margin-bottom: var(--sp-4);
  opacity: 0;
  animation: fadeUp 0.6s ease 0.2s forwards;
}

.hero__subtitle {
  font-size: 1.0625rem;
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: var(--sp-6);
  opacity: 0;
  animation: fadeUp 0.6s ease 0.3s forwards;
}

.hero__tagline {
  font-family: var(--font-body);
  font-size: clamp(1.1rem, 2vw, 1.375rem);
  font-weight: 400;
  font-style: italic;
  color: var(--primary-600);
  border-left: 3px solid var(--green-500);
  padding-left: var(--sp-4);
  margin-bottom: var(--sp-8);
  line-height: 1.5;
  opacity: 0;
  animation: fadeUp 0.6s ease 0.4s forwards;
}

.hero__cta {
  opacity: 0;
  animation: fadeUp 0.6s ease 0.5s forwards;
}

/* Illustration side */
.hero__illustration {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  animation: fadeIn 0.8s ease 0.3s forwards;
}

.hero__illustration-frame {
  position: relative;
  z-index: 2;
  width: min(420px, 100%);
  aspect-ratio: 1;
  border-radius: var(--r-2xl);
  overflow: hidden;
  background: oklch(0.92 0.04 210 / 0.5);
  box-shadow: var(--shadow-xl);
}

.hero__illustration-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__illustration-deco {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  z-index: 1;
}

.hero__illustration-deco--1 {
  width: 180px;
  height: 180px;
  background: oklch(0.88 0.06 158 / 0.45);
  bottom: -24px;
  left: -24px;
  animation: float 6s ease-in-out infinite;
}

.hero__illustration-deco--2 {
  width: 100px;
  height: 100px;
  background: oklch(0.85 0.05 255 / 0.50);
  top: -16px;
  right: -16px;
  animation: float 8s ease-in-out infinite reverse;
}

/* Scroll hint */
.hero__scroll-hint {
  position: absolute;
  bottom: var(--sp-8);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0;
  animation: fadeIn 1s ease 1s forwards;
}

/* ══════════════════════════════════════
   SOBRE
══════════════════════════════════════ */
.sobre {
  padding-block: var(--sp-24);
  background: white;
  border-top: 1px solid var(--border);
}

.sobre__inner {
  display: grid;
  gap: var(--sp-16);
}

.sobre__header {
  max-width: 560px;
}

.sobre__body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-12);
  align-items: start;
}

.sobre__bio {
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--text-body);
  margin-bottom: var(--sp-4);
}

.link-lattes {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--primary-500);
  border-bottom: 2px solid var(--primary-200);
  padding-bottom: 2px;
  transition: color var(--t-fast), border-color var(--t-fast);
}
.link-lattes:hover {
  color: var(--green-600);
  border-color: var(--green-400);
}

/* Badges */
.badges-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-3);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 700;
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--r-md);
  line-height: 1.3;
}

.badge--blue   { background: var(--primary-50);  color: var(--primary-600); }
.badge--teal   { background: var(--cat-ee-bg);    color: var(--cat-ee); }
.badge--indigo { background: oklch(0.95 0.03 270); color: var(--cat-psi); }
.badge--green  { background: var(--green-100);    color: var(--green-700); }

/* ══════════════════════════════════════
   CONTEÚDOS
══════════════════════════════════════ */
.conteudos {
  padding-block: var(--sp-24);
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
}

.conteudos__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-6);
}

.conteudo-card {
  background: white;
  border-radius: var(--r-xl);
  padding: var(--sp-8);
  border: 1px solid var(--border);
  transition: transform var(--t-normal), box-shadow var(--t-normal);
  position: relative;
  overflow: hidden;
}

.conteudo-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  border-radius: var(--r-xl) var(--r-xl) 0 0;
}

.conteudo-card--red::before   { background: var(--cat-tdah); }
.conteudo-card--teal::before  { background: var(--cat-ee); }
.conteudo-card--blue::before  { background: var(--primary-500); }

.conteudo-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.conteudo-card__icon {
  width: 52px;
  height: 52px;
  border-radius: var(--r-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--sp-5);
}

.conteudo-card--red  .conteudo-card__icon { background: var(--cat-tdah-bg); color: var(--cat-tdah); }
.conteudo-card--teal .conteudo-card__icon { background: var(--cat-ee-bg);   color: var(--cat-ee); }
.conteudo-card--blue .conteudo-card__icon { background: var(--primary-50);  color: var(--primary-500); }

.conteudo-card__title {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--primary-700);
  margin-bottom: var(--sp-3);
  line-height: 1.3;
}

.conteudo-card__text {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--text-body);
  margin-bottom: var(--sp-5);
}

.conteudo-card__link {
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--green-600);
  transition: color var(--t-fast);
}
.conteudo-card__link:hover { color: var(--green-700); }

/* ══════════════════════════════════════
   MATERIAIS
══════════════════════════════════════ */
.materiais {
  padding-block: var(--sp-24);
  background: white;
  border-top: 1px solid var(--border);
}

/* Filtros */
.materiais__filtros {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-bottom: var(--sp-10);
}

.filtro-btn {
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 700;
  padding: 9px 20px;
  border-radius: 999px;
  border: 2px solid var(--border);
  color: var(--text-muted);
  background: transparent;
  transition: all var(--t-fast);
}

.filtro-btn:hover {
  border-color: var(--primary-300);
  color: var(--primary-500);
  background: var(--primary-50);
}

.filtro-btn--active {
  background: var(--primary-500);
  border-color: var(--primary-500);
  color: white;
}

/* Grid */
.materiais__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-6);
}

/* Card de material */
.material-card {
  background: var(--bg);
  border-radius: var(--r-xl);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: transform var(--t-normal), box-shadow var(--t-normal), opacity var(--t-fast);
}

.material-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.material-card.hidden {
  display: none;
}

.material-card__preview {
  height: 180px;
  position: relative;
  overflow: hidden;
  background: linear-gradient(
    135deg,
    var(--primary-50) 0%,
    oklch(0.93 0.04 200) 100%
  );
  border-bottom: 1px solid var(--border);
}

/* PDF.js thumbnail canvas */
canvas.pdf-thumb {
  display: none;
}
canvas.pdf-thumb--loaded {
  display: block;
  width: 100%;
}

.material-card__preview::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 80px;
  background: linear-gradient(to top, rgba(96, 165, 250, 0.5), transparent);
  pointer-events: none;
}


.material-card__preview-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-2);
  color: var(--primary-300);
}

.material-card__preview-placeholder span {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--primary-300);
}

.material-card__body {
  padding: var(--sp-5) var(--sp-6) var(--sp-6);
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.material-card__badge {
  display: inline-flex;
  align-self: flex-start;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
  letter-spacing: 0.04em;
}

.material-card__badge--tdah            { background: var(--cat-tdah-bg); color: var(--cat-tdah); }
.material-card__badge--educacao-especial { background: var(--cat-ee-bg);  color: var(--cat-ee); }
.material-card__badge--psicologia       { background: oklch(0.95 0.03 270); color: var(--cat-psi); }

.material-card__title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--primary-700);
  line-height: 1.4;
}

.material-card__download {
  margin-top: var(--sp-2);
  align-self: flex-start;
}

/* Empty state */
.materiais__empty {
  text-align: center;
  padding: var(--sp-16);
  color: var(--text-muted);
  font-family: var(--font-display);
  font-size: 1rem;
}

/* ══════════════════════════════════════
   CONTATO
══════════════════════════════════════ */
.contato {
  padding-block: var(--sp-24);
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
}

.contato__inner {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--sp-16);
  align-items: start;
}

.contato__desc {
  font-size: 1.0625rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: var(--sp-8);
}

.contato__links {
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}

.contato__email {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--primary-500);
  transition: color var(--t-fast);
}
.contato__email:hover { color: var(--green-600); }

.contato__socials {
  display: flex;
  gap: var(--sp-3);
}

.social-link {
  width: 44px;
  height: 44px;
  border-radius: var(--r-md);
  background: white;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: all var(--t-fast);
}

.social-link:hover {
  background: var(--primary-500);
  border-color: var(--primary-500);
  color: white;
  transform: translateY(-2px);
}

/* Form */
.contato__form-wrap {
  background: white;
  border-radius: var(--r-2xl);
  padding: var(--sp-8);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
}

.contato__form {
  display: flex;
  flex-direction: column;
  gap: var(--sp-5);
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.form-label {
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-primary);
}

.form-input {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--text-primary);
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: var(--r-md);
  padding: 12px 16px;
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
  width: 100%;
  outline: none;
}

.form-input::placeholder { color: var(--text-muted); opacity: 0.7; }

.form-input:focus {
  border-color: var(--primary-300);
  box-shadow: 0 0 0 3px oklch(0.42 0.11 255 / 0.12);
}

.form-textarea {
  resize: vertical;
  min-height: 128px;
}

.form-feedback {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  text-align: center;
  border-radius: var(--r-md);
  padding: var(--sp-3) var(--sp-4);
  margin-top: var(--sp-3);
  display: none;
}

.form-feedback.success {
  display: block;
  background: var(--green-100);
  color: var(--green-700);
}

.form-feedback.error {
  display: block;
  background: var(--cat-tdah-bg);
  color: var(--cat-tdah);
}

/* ══════════════════════════════════════
   RODAPÉ
══════════════════════════════════════ */
.footer {
  background: var(--primary-700);
  color: oklch(0.85 0.03 255);
  padding-block: var(--sp-12);
}

.footer__inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: var(--sp-6) var(--sp-8);
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
}

.footer__logo {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 800;
  color: white;
}

.footer__tagline {
  font-size: 0.8125rem;
  color: oklch(0.75 0.04 255);
  font-style: italic;
}

.footer__nav {
  display: flex;
  gap: var(--sp-4);
  flex-wrap: wrap;
  justify-content: center;
}

.footer__nav a {
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 600;
  color: oklch(0.80 0.04 255);
  transition: color var(--t-fast);
}

.footer__nav a:hover { color: white; }

.footer__copy {
  grid-column: 1 / -1;
  font-size: 0.8125rem;
  color: oklch(0.65 0.03 255);
  text-align: center;
  border-top: 1px solid oklch(0.32 0.05 255);
  padding-top: var(--sp-4);
}

/* ══════════════════════════════════════
   ANIMATIONS
══════════════════════════════════════ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50%       { transform: translateY(-12px) scale(1.03); }
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ══════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════ */

/* Tablet */
@media (max-width: 1024px) {
  .hero__inner {
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-10);
  }

  .sobre__body {
    grid-template-columns: 1fr;
  }

  .conteudos__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .materiais__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .contato__inner {
    grid-template-columns: 1fr;
    gap: var(--sp-10);
  }

  .footer__inner {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--sp-6);
  }
  .footer__copy { text-align: center; }
  .footer__brand { align-items: center; }
}

/* Mobile */
@media (max-width: 768px) {
  :root { --navbar-height: 64px; }

  .navbar__nav {
    display: none;
    position: fixed;
    top: var(--navbar-height);
    left: 0; right: 0;
    background: oklch(0.98 0.005 95 / 0.97);
    backdrop-filter: blur(12px);
    flex-direction: column;
    padding: var(--sp-4);
    gap: var(--sp-1);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
  }

  .navbar__nav.open { display: flex; }
  .navbar__link { padding: var(--sp-3) var(--sp-4); width: 100%; }
  .navbar__hamburger { display: flex; }

  .hero__inner {
    grid-template-columns: 1fr;
    padding-block: var(--sp-12);
    gap: var(--sp-10);
    text-align: center;
  }

  .hero__tagline {
    text-align: left;
  }

  .hero__illustration-frame {
    width: min(320px, 85%);
    margin: 0 auto;
  }

  .hero__scroll-hint { display: none; }

  .sobre__body { gap: var(--sp-8); }
  .badges-grid { grid-template-columns: 1fr 1fr; }

  .conteudos__grid { grid-template-columns: 1fr; }
  .materiais__grid { grid-template-columns: 1fr; }

  .section-title { font-size: 1.75rem; }
}

@media (max-width: 480px) {
  .badges-grid { grid-template-columns: 1fr; }
  .contato__form-wrap { padding: var(--sp-6); }
  .footer__nav { gap: var(--sp-3); }
}