/* ==========================================================
   Sistema PEI · Design tokens
   ========================================================== */
:root {
  /* Cores */
  --color-bg: #FAF7F0;
  --color-surface: #FFFFFF;
  --color-surface-2: #F4EFE3;
  --color-ink: #1A1F18;
  --color-ink-muted: #4A5341;
  --color-ink-soft: #6F7A66;
  --color-primary: #2D5016;
  --color-primary-light: #527B3E;
  --color-primary-soft: #DCE7CC;
  --color-accent: #C66A3D;
  --color-accent-light: #E89A6E;
  --color-accent-soft: #F5DCC8;
  --color-border: #E8E1D1;
  --color-border-strong: #C9BFA8;
  --color-error: #A03028;
  --color-error-soft: #F7DCD8;

  /* Tipografia */
  --font-display: "Fraunces", Georgia, "Times New Roman", serif;
  --font-body: "Plus Jakarta Sans", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "Courier New", monospace;

  /* Layout */
  --container: 1100px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  /* Sombras (suaves) */
  --shadow-1: 0 1px 2px rgba(26, 31, 24, 0.04), 0 2px 8px rgba(26, 31, 24, 0.04);
  --shadow-2: 0 4px 12px rgba(26, 31, 24, 0.06), 0 12px 28px rgba(26, 31, 24, 0.05);
}

/* ==========================================================
   Reset e base
   ========================================================== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-ink);
  background: var(--color-bg);
  background-image:
    radial-gradient(circle at 15% 0%, rgba(82, 123, 62, 0.06), transparent 50%),
    radial-gradient(circle at 85% 100%, rgba(198, 106, 61, 0.05), transparent 50%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--color-ink);
  margin: 0;
}

h1 { font-size: clamp(2rem, 5vw, 3.25rem); line-height: 1.1; }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); line-height: 1.15; }
h3 { font-size: 1.125rem; line-height: 1.3; }

p { margin: 0 0 1rem; }
a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-accent); }

em { font-style: italic; color: var(--color-accent); font-family: var(--font-display); }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-primary-light);
  margin-bottom: 1rem;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ==========================================================
   Header
   ========================================================== */
.site-header {
  border-bottom: 1px solid var(--color-border);
  background: rgba(250, 247, 240, 0.85);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--color-primary);
}
.brand:hover { color: var(--color-primary); }

.brand-mark {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}

.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-name {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-ink);
}
.brand-sub {
  font-size: 0.75rem;
  color: var(--color-ink-soft);
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

.site-nav { display: flex; gap: 1.75rem; }
.site-nav a {
  font-size: 0.9rem;
  color: var(--color-ink-muted);
  font-weight: 500;
}
.site-nav a:hover { color: var(--color-primary); }

/* ==========================================================
   Hero
   ========================================================== */
.hero {
  padding: 4rem 0 2.5rem;
  max-width: 760px;
}

.hero h1 {
  margin: 0.5rem 0 1.5rem;
}

.lede {
  font-size: 1.15rem;
  color: var(--color-ink-muted);
  max-width: 620px;
  line-height: 1.55;
}

.hero-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 2rem;
  font-size: 0.875rem;
  color: var(--color-ink-soft);
  font-family: var(--font-mono);
}
.hero-meta strong {
  color: var(--color-primary);
  font-weight: 600;
}
.hero-meta .dot { color: var(--color-border-strong); }

/* ==========================================================
   Stepper
   ========================================================== */
.stepper {
  margin: 3rem 0 2.5rem;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.stepper ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.step-tab {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  border-right: 1px solid var(--color-border);
  cursor: default;
  transition: background 0.2s;
}
.step-tab:last-child { border-right: none; }
.step-tab.active { background: var(--color-surface); }
.step-tab.completed { background: var(--color-primary-soft); }

.step-num {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--color-border-strong);
  line-height: 1;
}
.step-tab.active .step-num { color: var(--color-primary); }
.step-tab.completed .step-num { color: var(--color-primary-light); }

.step-label {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--color-ink-muted);
}
.step-tab.active .step-label { color: var(--color-ink); }

/* ==========================================================
   Step panels
   ========================================================== */
.step-panel {
  display: none;
  padding-bottom: 4rem;
}
.step-panel.active { display: block; }

.panel-head {
  margin-bottom: 2.5rem;
  max-width: 720px;
}
.panel-head h2 { margin-bottom: 0.75rem; }
.panel-head p {
  color: var(--color-ink-muted);
  font-size: 1.05rem;
}

/* ==========================================================
   Forms
   ========================================================== */
.form-grid {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.fs {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  margin: 0;
  background: var(--color-surface);
  box-shadow: var(--shadow-1);
}

.fs legend {
  padding: 0 0.5rem;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.15rem;
  color: var(--color-primary);
  margin-left: -0.5rem;
}

.field { display: flex; flex-direction: column; gap: 0.4rem; margin-bottom: 1.25rem; }
.field:last-child { margin-bottom: 0; }

.field-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 1.25rem;
}
.field-row .field { margin-bottom: 0; }

label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-ink);
}
.req { color: var(--color-accent); }

input[type="text"],
input[type="date"],
select,
textarea {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-ink);
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  transition: border-color 0.15s, box-shadow 0.15s;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-soft);
}

textarea { resize: vertical; line-height: 1.5; font-family: var(--font-body); }

.hint {
  font-size: 0.8rem;
  color: var(--color-ink-soft);
  margin: 0.25rem 0 0;
}

/* ==========================================================
   Buttons
   ========================================================== */
.form-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  justify-content: flex-end;
  padding: 1.5rem 0 0;
  border-top: 1px solid var(--color-border);
  margin-top: 0.5rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.4rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.18s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: white;
}
.btn-primary:hover {
  background: #1f3b0e;
  transform: translateY(-1px);
  box-shadow: var(--shadow-2);
}

.btn-secondary {
  background: var(--color-accent);
  color: white;
}
.btn-secondary:hover {
  background: #a85529;
  transform: translateY(-1px);
  box-shadow: var(--shadow-2);
}

.btn-ghost {
  background: transparent;
  color: var(--color-ink-muted);
  border-color: var(--color-border-strong);
}
.btn-ghost:hover {
  background: var(--color-surface);
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none !important; }

/* ==========================================================
   Loading + Error
   ========================================================== */
.loading-card,
.error-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 3rem 2rem;
  text-align: center;
  box-shadow: var(--shadow-1);
}

.loading-spinner {
  width: 48px;
  height: 48px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  margin: 0 auto 1.5rem;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loading-text {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}
.loading-sub {
  font-size: 0.9rem;
  color: var(--color-ink-soft);
}

.error-card {
  background: var(--color-error-soft);
  border-color: var(--color-error);
  color: var(--color-error);
}
.error-card strong { font-size: 1.1rem; display: block; margin-bottom: 0.5rem; }

/* ==========================================================
   PEI Document (resultado)
   ========================================================== */
.pei-doc {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-2);
  overflow: hidden;
}

.pei-header {
  background: var(--color-primary);
  color: white;
  padding: 1.5rem 2rem;
}
.pei-doctype {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 500;
  margin: 0;
  letter-spacing: -0.01em;
}
.pei-legal {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  margin: 0.25rem 0 0;
  opacity: 0.85;
  letter-spacing: 0.04em;
}

.pei-section {
  padding: 2rem;
  border-bottom: 1px solid var(--color-border);
}
.pei-section:last-of-type { border-bottom: none; }

.pei-section h3 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-primary-soft);
}

.pei-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
}

.pei-cell, .pei-block { display: flex; flex-direction: column; gap: 0.4rem; }
.pei-block { margin-bottom: 1.5rem; }
.pei-block:last-child { margin-bottom: 0; }

.pei-cell label,
.pei-block label {
  font-size: 0.78rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-ink-soft);
  font-family: var(--font-mono);
}

.pei-input {
  font-family: var(--font-body);
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface-2);
  color: var(--color-ink);
  font-size: 0.95rem;
  line-height: 1.5;
  transition: border-color 0.15s, background 0.15s;
  min-height: 1.6em;
}

.pei-input:focus {
  outline: none;
  border-color: var(--color-primary);
  background: var(--color-surface);
  box-shadow: 0 0 0 3px var(--color-primary-soft);
}

.pei-input-large { min-height: 6em; }

.pei-input-empty:empty::before {
  content: attr(data-placeholder);
  color: var(--color-ink-soft);
  font-style: italic;
}

.pei-sub-block {
  margin-top: 1rem;
}
.pei-sub-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-primary);
  margin-bottom: 0.35rem;
  font-weight: 500;
}

#pei-extras details {
  border-top: 1px solid var(--color-border);
  padding: 1rem 0;
}
#pei-extras summary {
  cursor: pointer;
  font-weight: 500;
  color: var(--color-primary);
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
}

.pei-list {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-ink-muted);
  padding-left: 1.25rem;
}
.pei-list li { margin-bottom: 0.35rem; }

.pei-footer {
  background: var(--color-surface-2);
  padding: 1.75rem 2rem;
  border-top: 1px solid var(--color-border);
}

.pei-disclaimer {
  font-size: 0.85rem;
  color: var(--color-ink-muted);
  font-style: italic;
  margin-bottom: 1.5rem;
  line-height: 1.5;
}

.pei-signatures {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  text-align: center;
  margin-top: 2rem;
}
.pei-signatures div {
  font-size: 0.85rem;
  color: var(--color-ink-muted);
}
.pei-signatures .line {
  display: block;
  border-bottom: 1px solid var(--color-ink-soft);
  margin-bottom: 0.4rem;
  height: 1.5rem;
}

/* ==========================================================
   About section
   ========================================================== */
.about {
  margin-top: 4rem;
  padding: 3rem 0 4rem;
  border-top: 1px solid var(--color-border);
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 3rem;
}

.about-grid h2 { margin-bottom: 1rem; }
.about-grid p { color: var(--color-ink-muted); }

.steps-list {
  padding-left: 1.5rem;
  color: var(--color-ink-muted);
}
.steps-list li { margin-bottom: 0.75rem; }
.steps-list strong { color: var(--color-ink); font-weight: 600; }

.callout {
  background: var(--color-accent-soft);
  border-left: 3px solid var(--color-accent);
  padding: 1rem 1.25rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.92rem;
  color: var(--color-ink);
  margin-top: 1.5rem;
}
.callout strong { color: var(--color-accent); }

/* ==========================================================
   Footer
   ========================================================== */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 2rem 0;
  background: var(--color-surface);
  margin-top: 3rem;
}
.site-footer p { margin: 0; font-size: 0.85rem; color: var(--color-ink-muted); }
.site-footer .muted { font-family: var(--font-mono); color: var(--color-ink-soft); margin-top: 0.25rem; }

/* ==========================================================
   Mobile
   ========================================================== */
@media (max-width: 768px) {
  .stepper ol { grid-template-columns: 1fr; }
  .step-tab { border-right: none; border-bottom: 1px solid var(--color-border); }
  .step-tab:last-child { border-bottom: none; }
  .header-inner { flex-direction: column; gap: 1rem; }
  .site-nav { gap: 1rem; }
  .form-actions { flex-direction: column; }
  .form-actions .btn { width: 100%; justify-content: center; }
  .pei-section { padding: 1.5rem 1rem; }
  .fs { padding: 1.25rem; }
}

/* ==========================================================
   Print (para PDF export via browser)
   ========================================================== */
@media print {
  .site-header, .site-nav, .stepper, .form-actions, .site-footer, .hero, .about { display: none !important; }
  body { background: white; }
  .pei-doc { box-shadow: none; border: none; }
}

/* ==========================================================
   PAEE + PEI · adições
   ========================================================== */
.callout-inline {
  background: var(--color-accent-soft);
  border-left: 3px solid var(--color-accent);
  padding: 0.75rem 1rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.85rem;
  color: var(--color-ink);
  margin-top: 1rem;
}

.subhead {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary-light);
  margin: 0.5rem 0 0.25rem;
  font-weight: 500;
}

.fs-hint {
  font-size: 0.85rem;
  color: var(--color-ink-soft);
  margin: -0.25rem 0 1rem;
  font-style: italic;
}

.fs-muted {
  background: var(--color-surface-2);
  border-style: dashed;
}
.fs-muted legend { color: var(--color-ink-soft); }

.pei-section-note {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-ink-soft);
  margin: -0.75rem 0 1.25rem;
  font-style: italic;
  letter-spacing: 0.02em;
}
.pei-section-note-ai { color: var(--color-accent); }

.pei-section-paee {
  background: repeating-linear-gradient(
    45deg,
    var(--color-surface),
    var(--color-surface) 12px,
    var(--color-surface-2) 12px,
    var(--color-surface-2) 24px
  );
}
.pei-section-paee h3 { color: var(--color-ink-muted); border-bottom-color: var(--color-border-strong); }

.pei-section-pei {
  border-left: 4px solid var(--color-primary);
}

.pei-input-blank {
  background: var(--color-bg);
  border-style: dashed;
  min-height: 3em;
}
.pei-input-blank:empty::before,
.pei-input-blank[data-placeholder]:empty::before {
  content: attr(data-placeholder);
  color: var(--color-ink-soft);
  font-style: italic;
}

.pei-signatures { grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }

/* ==========================================================
   Equipe de desenvolvimento
   ========================================================== */
.team {
  margin-top: 3.5rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--color-border);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.team-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem 1.75rem;
  box-shadow: var(--shadow-1);
}

.team-name {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 0.25rem;
}

.team-role {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-ink-soft);
  letter-spacing: 0.02em;
  margin-bottom: 1.1rem;
}

.team-links {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.team-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.9rem;
  color: var(--color-ink-muted);
  text-decoration: none;
  transition: color 0.15s;
  width: fit-content;
}

.team-links a:hover { color: var(--color-accent); }

.team-links .ic {
  width: 13px;
  height: 13px;
  fill: currentColor;
  flex-shrink: 0;
}