/* =========================================================
   Portfólio — Arthur Reis
   Folha de estilo única, compartilhada por todas as páginas.
   Sumário:
     01. Tokens de design (cores, espaçamento, tipografia)
     02. Reset e base
     03. Utilitários de layout
     04. Cabeçalho e navegação
     05. Hero
     06. Cartões e seções
     07. Linha do tempo (formação e experiência)
     08. Grade de projetos
     09. Formulário e contato
     10. Rodapé
     11. Animações de entrada
     12. Responsivo
   ========================================================= */

/* ---------- 01. Tokens de design ---------- */
:root {
  /* Paleta base — tema escuro (padrão) */
  --bg: #0a0d16;
  --bg-soft: #10151f;
  --surface: #141a26;
  --surface-2: #1a2130;
  --border: #242c3d;
  --border-strong: #33405a;

  --text: #eef1f7;
  --text-muted: #a3adc2;
  --text-faint: #6f7b93;

  --accent: #4c7dff;
  --accent-2: #34d3e0;
  --accent-soft: rgba(76, 125, 255, 0.14);
  --accent-ring: rgba(76, 125, 255, 0.35);

  --gradient: linear-gradient(120deg, var(--accent) 0%, var(--accent-2) 100%);

  /* Espaçamento */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4.5rem;
  --space-9: 7rem;

  /* Formas */
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 22px;
  --radius-full: 999px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow: 0 12px 32px -12px rgba(0, 0, 0, 0.55);
  --shadow-lg: 0 28px 60px -20px rgba(0, 0, 0, 0.65);

  /* Tipografia */
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, "SF Mono",
    Menlo, Consolas, monospace;

  --container: 1120px;
  --header-h: 72px;
}

/* Tema claro */
[data-theme="light"] {
  --bg: #ffffff;
  --bg-soft: #f6f7fb;
  --surface: #ffffff;
  --surface-2: #f1f3f9;
  --border: #e3e7f0;
  --border-strong: #cdd4e3;

  --text: #10131c;
  --text-muted: #525c73;
  --text-faint: #7a849b;

  --accent: #2a5bd7;
  --accent-2: #0e8fa0;
  --accent-soft: rgba(42, 91, 215, 0.09);
  --accent-ring: rgba(42, 91, 215, 0.28);

  --shadow-sm: 0 1px 2px rgba(16, 19, 28, 0.06);
  --shadow: 0 12px 32px -14px rgba(16, 19, 28, 0.18);
  --shadow-lg: 0 28px 60px -22px rgba(16, 19, 28, 0.22);
}

/* ---------- 02. Reset e base ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 1rem);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background-color 0.25s ease, color 0.25s ease;
}

/* Brilho ambiente no topo da página */
body::before {
  content: "";
  position: fixed;
  inset: 0 0 auto 0;
  height: 520px;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(60% 100% at 15% 0%, var(--accent-soft) 0%, transparent 70%),
    radial-gradient(45% 90% at 85% 5%, rgba(34, 211, 238, 0.1) 0%, transparent 70%);
}

h1, h2, h3, h4 {
  margin: 0 0 var(--space-3);
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.1rem, 5.5vw, 3.6rem); }
h2 { font-size: clamp(1.6rem, 3.4vw, 2.3rem); }
h3 { font-size: 1.2rem; }

p { margin: 0 0 var(--space-4); }

a {
  color: var(--accent-2);
  text-decoration: none;
  transition: color 0.18s ease;
}
a:hover { color: var(--accent); }

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

ul { margin: 0; padding: 0; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

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

/* Link de acessibilidade "pular para o conteúdo" */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 999;
  padding: var(--space-3) var(--space-4);
  background: var(--accent);
  color: #fff;
  border-radius: 0 0 var(--radius) 0;
}
.skip-link:focus {
  left: 0;
  color: #fff;
}

/* ---------- 03. Utilitários de layout ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--space-5);
  position: relative;
  z-index: 1;
}

.section {
  padding-block: var(--space-8);
}

.section--tight { padding-block: var(--space-7); }

.section--alt {
  background: var(--bg-soft);
  border-block: 1px solid var(--border);
}

.section-head {
  max-width: 62ch;
  margin-bottom: var(--space-6);
}

.section-head p {
  color: var(--text-muted);
  margin-bottom: 0;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: var(--space-3);
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  border-radius: 2px;
  background: var(--gradient);
}

.text-gradient {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lead {
  font-size: 1.12rem;
  color: var(--text-muted);
  max-width: 62ch;
}

/* Blocos de texto corrido: limita a largura para manter a leitura confortável. */
.prose {
  max-width: 68ch;
  color: var(--text-muted);
}

.prose p:last-child { margin-bottom: 0; }

.grid { display: grid; gap: var(--space-5); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }

.stack > * + * { margin-top: var(--space-4); }

.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;
}

/* Botões */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.75rem 1.35rem;
  border: 1px solid transparent;
  border-radius: var(--radius-full);
  font-size: 0.95rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease,
    background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 10px 26px -12px var(--accent-ring);
}
.btn--primary:hover {
  color: #fff;
  box-shadow: 0 16px 34px -12px var(--accent-ring);
}

.btn--ghost {
  background: transparent;
  border-color: var(--border-strong);
  color: var(--text);
}
.btn--ghost:hover {
  color: var(--text);
  border-color: var(--accent);
  background: var(--accent-soft);
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-5);
}

/* Etiquetas / chips */
.tag {
  display: inline-block;
  padding: 0.3rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  background: var(--surface-2);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  list-style: none;
}

/* ---------- 04. Cabeçalho e navegação ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease, background-color 0.25s ease;
}

.site-header.is-scrolled {
  border-bottom-color: var(--border);
  box-shadow: var(--shadow-sm);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--text);
  font-weight: 700;
  letter-spacing: -0.02em;
}
.brand:hover { color: var(--text); }

.brand__mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 11px;
  background: var(--gradient);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  box-shadow: 0 8px 20px -10px var(--accent-ring);
}

.brand__name { font-size: 1rem; }
.brand__role {
  display: block;
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--text-faint);
  letter-spacing: 0.02em;
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  list-style: none;
}

.nav__link {
  display: block;
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-full);
  color: var(--text-muted);
  font-size: 0.92rem;
  font-weight: 500;
  transition: color 0.18s ease, background-color 0.18s ease;
}

.nav__link:hover {
  color: var(--text);
  background: var(--surface-2);
}

.nav__link[aria-current="page"] {
  color: var(--text);
  background: var(--accent-soft);
}

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

.icon-btn {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  background: var(--surface);
  color: var(--text-muted);
  cursor: pointer;
  transition: color 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}

.icon-btn:hover {
  color: var(--text);
  border-color: var(--border-strong);
  background: var(--surface-2);
}

.icon-btn svg { width: 18px; height: 18px; }

/* Ícones do alternador de tema: mostra um por vez */
.theme-toggle .icon-moon { display: none; }
[data-theme="light"] .theme-toggle .icon-moon { display: block; }
[data-theme="light"] .theme-toggle .icon-sun { display: none; }

.nav__toggle { display: none; }

/* ---------- 05. Hero ---------- */
.hero {
  position: relative;
  padding-block: clamp(var(--space-7), 9vw, var(--space-9));
  overflow: hidden;
}

.hero__grid {
  display: grid;
  grid-template-columns: 1.25fr 0.85fr;
  gap: var(--space-7);
  align-items: center;
}

.hero__status {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.35rem 0.85rem 0.35rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  background: var(--surface);
  font-size: 0.83rem;
  color: var(--text-muted);
  margin-bottom: var(--space-5);
}

.hero__status .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.16);
}

.hero h1 { margin-bottom: var(--space-4); }

.hero__title-line { display: block; }

.hero__desc {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 54ch;
}

/* Cartão do perfil */
.profile-card {
  position: relative;
  padding: var(--space-6);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-lg);
}

.profile-card::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(160deg, var(--accent-ring), transparent 55%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask-composite: exclude;
  pointer-events: none;
}

.profile-card__avatar {
  width: 92px;
  height: 92px;
  border-radius: var(--radius-lg);
  background: var(--gradient);
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-4);
  box-shadow: 0 14px 30px -14px var(--accent-ring);
}

.profile-card h2 {
  font-size: 1.3rem;
  margin-bottom: var(--space-1);
}

.profile-card__role {
  color: var(--accent-2);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  margin-bottom: var(--space-5);
}

.profile-card__list {
  list-style: none;
  display: grid;
  gap: var(--space-3);
  font-size: 0.92rem;
}

.profile-card__list li {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--text-muted);
}

.profile-card__list svg {
  width: 17px;
  height: 17px;
  flex-shrink: 0;
  color: var(--text-faint);
}

/* ---------- 06. Cartões e seções ---------- */
.card {
  position: relative;
  padding: var(--space-5);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-3px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow);
}

.card h3 { margin-bottom: var(--space-2); }

.card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 0;
}

.card__icon {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-bottom: var(--space-4);
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent-2);
}
.card__icon svg { width: 20px; height: 20px; }

/* Blocos de competências */
.skill-group + .skill-group { margin-top: var(--space-5); }

.skill-group__title {
  font-size: 0.8rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-faint);
  margin-bottom: var(--space-3);
}

/* Aviso de conteúdo pendente */
.placeholder-note {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
  background: var(--surface-2);
  color: var(--text-muted);
  font-size: 0.9rem;
}

.placeholder-note strong { color: var(--text); }
.placeholder-note svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--accent-2);
  margin-top: 2px;
}

/* ---------- 07. Linha do tempo ---------- */
.timeline {
  position: relative;
  list-style: none;
  padding-left: var(--space-6);
}

.timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(
    to bottom,
    var(--accent) 0%,
    var(--border) 65%,
    transparent 100%
  );
}

.timeline__item {
  position: relative;
  padding-bottom: var(--space-6);
}

.timeline__item:last-child { padding-bottom: 0; }

.timeline__item::before {
  content: "";
  position: absolute;
  left: calc(-1 * var(--space-6) + 2px);
  top: 9px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.timeline__period {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-2);
  letter-spacing: 0.03em;
  margin-bottom: var(--space-1);
}

.timeline__title {
  font-size: 1.15rem;
  margin-bottom: var(--space-1);
}

.timeline__org {
  display: block;
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: var(--space-3);
}

.timeline__body {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Listas de tópicos dentro da linha do tempo.
   O :not() preserva o visual de chip das etiquetas (.tag-list). */
.timeline__body ul:not(.tag-list) {
  list-style: none;
  display: grid;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.timeline__body ul:not(.tag-list) li {
  position: relative;
  padding-left: var(--space-5);
}

.timeline__body ul:not(.tag-list) li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.6;
}

/* ---------- 08. Grade de projetos ---------- */
.projects {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-5);
  list-style: none;
}

.project {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  padding: 0;
}

.project__cover {
  position: relative;
  aspect-ratio: 16 / 9;
  display: grid;
  place-items: center;
  background:
    radial-gradient(120% 120% at 20% 0%, var(--accent-soft), transparent 60%),
    var(--surface-2);
  border-bottom: 1px solid var(--border);
  color: var(--accent-2);
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

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

.project__body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: var(--space-5);
  gap: var(--space-3);
}

.project__meta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.project__title { margin: 0; }

.project__desc {
  color: var(--text-muted);
  font-size: 0.94rem;
  margin: 0;
  flex: 1;
}

.project__links {
  display: flex;
  gap: var(--space-4);
  padding-top: var(--space-2);
  font-size: 0.88rem;
  font-weight: 600;
}

.project__links a {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.project__links svg { width: 15px; height: 15px; }

/* Espaço reservado enquanto a lista de projetos não chega */
.project--slot {
  border-style: dashed;
  background: transparent;
  box-shadow: none;
}

.project--slot:hover { transform: none; box-shadow: none; }

.project--slot .project__cover {
  background: transparent;
  border-bottom-style: dashed;
  color: var(--text-faint);
}

/* ---------- 09. Contato ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: var(--space-7);
  align-items: start;
}

.contact-list {
  list-style: none;
  display: grid;
  gap: var(--space-3);
}

.contact-item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  transition: border-color 0.18s ease, transform 0.18s ease;
}

.contact-item:hover {
  border-color: var(--accent);
  transform: translateX(3px);
}

.contact-item__icon {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  border-radius: 11px;
  background: var(--accent-soft);
  color: var(--accent-2);
}
.contact-item__icon svg { width: 18px; height: 18px; }

.contact-item__label {
  display: block;
  font-size: 0.78rem;
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.contact-item__value {
  color: var(--text);
  font-weight: 500;
  word-break: break-word;
}

.form {
  display: grid;
  gap: var(--space-4);
  padding: var(--space-6);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.field { display: grid; gap: var(--space-2); }

.field label {
  font-size: 0.88rem;
  font-weight: 600;
}

.field input,
.field textarea {
  width: 100%;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-soft);
  color: var(--text);
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-ring);
}

.field textarea { resize: vertical; min-height: 130px; }

.form__hint {
  font-size: 0.82rem;
  color: var(--text-faint);
  margin: 0;
}

/* Faixa de chamada final */
.cta {
  position: relative;
  overflow: hidden;
  padding: var(--space-7);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(90% 140% at 10% 0%, var(--accent-soft), transparent 65%),
    var(--surface);
  text-align: center;
}

.cta h2 { margin-bottom: var(--space-3); }
.cta p { color: var(--text-muted); max-width: 52ch; margin-inline: auto; }
.cta .btn-row { justify-content: center; }

/* ---------- 10. Rodapé ---------- */
.site-footer {
  margin-top: var(--space-8);
  padding-block: var(--space-6);
  border-top: 1px solid var(--border);
  background: var(--bg-soft);
}

.footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.footer__copy {
  color: var(--text-faint);
  font-size: 0.88rem;
  margin: 0;
}

.footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  list-style: none;
  font-size: 0.9rem;
}

.footer__links a { color: var(--text-muted); }
.footer__links a:hover { color: var(--accent-2); }

/* ---------- 11. Animações de entrada ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s cubic-bezier(0.2, 0.8, 0.2, 1),
    transform 0.6s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}

/* ---------- 12. Responsivo ---------- */
@media (max-width: 900px) {
  .hero__grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: var(--space-6); }
}

@media (max-width: 780px) {
  .nav__toggle { display: grid; }

  .nav__menu {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-1);
    padding: var(--space-4) var(--space-5) var(--space-6);
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
  }

  .nav__menu.is-open {
    transform: none;
    opacity: 1;
    visibility: visible;
  }

  .nav__link {
    padding: 0.7rem 0.9rem;
    border-radius: var(--radius-sm);
    font-size: 1rem;
  }

  .brand__role { display: none; }
}

@media (max-width: 560px) {
  .section { padding-block: var(--space-7); }
  .form, .cta, .profile-card { padding: var(--space-5); }
  .btn { width: 100%; }
  .btn-row { flex-direction: column; }
}

@media print {
  .site-header, .site-footer, .btn-row, .form { display: none; }
  body { background: #fff; color: #000; }
}