/* ==========================================================================
   DESIGN SYSTEM SHOWCASE — CSS ESTRUTURAL
   Apenas layout e estrutura. TODO valor de design (cores, fontes, raios,
   sombras, espaçamentos, movimento, breakpoints e classes .type-*) é gerado
   em runtime pelo theme.js a partir de data/design_system_final.json.
   As cores de fundo/superfície/texto/acento são reescritas ao rolar pelo
   "maestro cromático" (app.js), sempre com combinações válidas do JSON.
   ========================================================================== */

:root {
  --sidebar-width: 280px;
  --content-max-width: 1180px;
  /* variáveis preenchidas pelo maestro (fallback herda os aliases do tema) */
  --scheme-text-on-bg: var(--color-text-primary);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg-page);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--motion-slow) var(--ease-standard),
              color var(--motion-slow) var(--ease-standard);
}

/* ---------- Skip link (13.3) ---------- */
.skip-link {
  position: fixed;
  top: -60px;
  left: var(--space-4);
  z-index: 400;
  background: var(--color-accent);
  color: var(--color-on-accent);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  transition: top var(--motion-fast) var(--ease-decelerate);
}
.skip-link:focus { top: var(--space-4); }

/* ---------- Barra de progresso de leitura ---------- */
.scroll-progress {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 3px;
  z-index: 300;
  background: transparent;
  pointer-events: none;
}
.scroll-progress span {
  display: block;
  height: 100%;
  width: 100%;
  transform: scaleX(0);
  transform-origin: left center;
  background: var(--color-accent);
  transition: transform 80ms linear;
}

/* ---------- Mobile Header ---------- */
.mobile-header {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 56px;
  background: var(--color-bg-sidebar);
  color: var(--color-text-on-dark);
  z-index: 100;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-4);
}
.mobile-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.menu-toggle, .dark-mode-toggle {
  background: none;
  border: none;
  color: var(--color-text-on-dark);
  font-size: 1.5rem;
  cursor: pointer;
  width: var(--touch-target-min);
  height: var(--touch-target-min);
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
  transition: background-color var(--motion-fast) var(--ease-decelerate);
}
.menu-toggle:hover, .dark-mode-toggle:hover { background: rgba(255,255,255,0.12); }
.menu-toggle:focus-visible, .dark-mode-toggle:focus-visible {
  outline: var(--focus-ring-width) solid var(--focus-ring-dark-bg);
  outline-offset: var(--focus-ring-offset);
}

/* ---------- Sidebar (chrome ESTÁVEL — 8.4: navegação é consistência estrita) --- */
.sidebar {
  position: fixed;
  top: 0; left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--color-bg-sidebar);
  color: var(--color-text-on-dark);
  display: flex;
  flex-direction: column;
  z-index: 200;
  overflow: hidden;
}
.sidebar-header {
  padding: var(--space-6) var(--space-6) var(--space-4);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  display: flex; flex-wrap: wrap; align-items: baseline; gap: var(--space-2);
}
.sidebar-brand {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text-on-dark);
  width: 100%;
}
.sidebar-subtitle {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
}
.sidebar-header .dark-mode-toggle {
  margin-left: auto; opacity: 0.85; font-size: 1.125rem; width: 36px; height: 36px;
}
.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-3) 0;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.15) transparent;
}
.sidebar-nav::-webkit-scrollbar { width: 4px; }
.sidebar-nav::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.15); border-radius: var(--radius-full); }
.nav-group-label {
  padding: var(--space-4) var(--space-6) var(--space-1);
  font-size: 0.625rem; font-weight: 600; letter-spacing: 0.12em;
  text-transform: uppercase; opacity: 0.5;
}
.nav-link {
  display: flex; align-items: center; gap: var(--space-3);
  padding: var(--space-2) var(--space-6);
  color: var(--color-text-on-dark);
  opacity: 0.72;
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 400;
  transition: all var(--motion-fast) var(--ease-decelerate);
  border-left: 3px solid transparent;
  cursor: pointer;
}
.nav-link:hover { opacity: 1; background: rgba(255,255,255,0.06); }
.nav-link.active {
  color: var(--color-accent);
  opacity: 1;
  background: color-mix(in srgb, var(--color-accent) 10%, transparent);
  border-left-color: var(--color-accent);
  font-weight: 600;
}
.nav-link:focus-visible {
  outline: var(--focus-ring-width) solid var(--focus-ring-dark-bg);
  outline-offset: calc(var(--focus-ring-offset) * -1);
}
.nav-link .nav-number {
  font-size: 0.625rem; font-weight: 600; opacity: 0.6; min-width: 22px; text-align: right;
}
.nav-link.active .nav-number { color: var(--color-accent); opacity: 1; }
.nav-link .nav-icon { font-size: 1.125rem; opacity: 0.7; }
.nav-link.active .nav-icon { opacity: 1; }
.nav-link-lead { font-weight: 500; opacity: 0.9; }
.nav-link-lead .nav-number { font-size: 0.8125rem; }
.sidebar-footer { padding: var(--space-4) var(--space-6); border-top: 1px solid rgba(255,255,255,0.08); }
.sidebar-version { font-size: 0.6875rem; opacity: 0.5; font-weight: 500; letter-spacing: 0.05em; }

.sidebar-overlay {
  display: none;
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.55);
  z-index: 150;
  backdrop-filter: blur(4px);
}

/* ---------- Main / container ---------- */
.main-content {
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  background: var(--color-bg-page);
  transition: background-color var(--motion-slow) var(--ease-standard);
}
.content-container { width: 100%; }

/* ==========================================================================
   HERO (abertura)
   ========================================================================== */
.hero {
  min-height: 90vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  padding: var(--space-24) clamp(var(--space-6), 6vw, var(--space-20));
  color: var(--scheme-text-on-bg);
  transition: color var(--motion-slow) var(--ease-standard);
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(120% 80% at 15% 10%, color-mix(in srgb, var(--color-accent) 12%, transparent), transparent 60%),
    radial-gradient(90% 70% at 90% 90%, color-mix(in srgb, var(--color-primary) 18%, transparent), transparent 55%);
  pointer-events: none;
}
.hero-inner { position: relative; max-width: 60ch; }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: var(--space-2);
  font-size: 0.8125rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--color-accent-text);
  margin-bottom: var(--space-5);
}
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.75rem, 1.5rem + 6vw, 5.5rem);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-5);
}
.hero-lead {
  font-size: clamp(1.0625rem, 1rem + 0.6vw, 1.375rem);
  line-height: 1.55;
  opacity: 0.92;
  margin-bottom: var(--space-8);
}
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-5); margin-bottom: var(--space-12); }
.hero-cta { text-decoration: none; font-size: 1rem; }
.hero-link {
  color: var(--scheme-text-on-bg);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9375rem;
  border-bottom: 2px solid var(--color-accent);
  padding-bottom: 2px;
  transition: opacity var(--motion-fast) var(--ease-decelerate);
}
.hero-link:hover { opacity: 0.7; }
.hero-meta { display: flex; flex-wrap: wrap; gap: clamp(var(--space-6), 4vw, var(--space-12)); }
.hero-meta-item { display: flex; flex-direction: column; gap: 2px; font-size: 0.8125rem; opacity: 0.85; }
.hero-meta-num { font-family: var(--font-display); font-size: 2rem; font-weight: 700; line-height: 1; }
.hero-meta-fonts { gap: 0; font-size: 1rem; }
.hero-meta-fonts span:first-child { font-size: 1.25rem; }
.hero-scroll-hint {
  position: absolute; bottom: var(--space-8); left: 50%; transform: translateX(-50%);
  display: inline-flex; align-items: center; gap: var(--space-2);
  font-size: 0.75rem; letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--scheme-text-on-bg); opacity: 0.65; text-decoration: none;
  animation: bob 2.4s ease-in-out infinite;
}
@keyframes bob { 0%,100% { transform: translateX(-50%) translateY(0); } 50% { transform: translateX(-50%) translateY(6px); } }

/* ==========================================================================
   FAIXA CROMÁTICA (peça central)
   ========================================================================== */
.chroma {
  padding: var(--space-20) clamp(var(--space-6), 6vw, var(--space-20));
  border-top: 1px solid var(--color-border);
}
.chroma-intro { max-width: var(--content-max-width); margin: 0 auto var(--space-12); }
.chroma-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 1.4rem + 3vw, 3.25rem);
  font-weight: 700; letter-spacing: -0.02em; line-height: 1.08;
  color: var(--color-text-primary);
  margin: var(--space-2) 0 var(--space-4);
}
.chroma-desc { font-size: 1.0625rem; color: var(--color-text-secondary); max-width: 70ch; line-height: 1.6; margin-bottom: var(--space-6); }
.prop-bar {
  display: flex; height: 56px;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.prop-seg {
  display: flex; align-items: center; justify-content: center;
  font-size: 0.75rem; font-weight: 700;
  transition: flex var(--motion-slow) var(--ease-standard);
}

/* stage sticky + passos de scroll */
.chroma-stage-wrap {
  max-width: var(--content-max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(var(--space-6), 4vw, var(--space-12));
  align-items: start;
}
.chroma-stage { position: sticky; top: 12vh; }
.chroma-card {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg, var(--radius-md));
  padding: var(--space-8);
  box-shadow: var(--shadow-lg, var(--shadow-md));
  transition: background-color var(--motion-slow) var(--ease-standard),
              border-color var(--motion-slow) var(--ease-standard),
              color var(--motion-slow) var(--ease-standard);
}
.chroma-card-eyebrow {
  font-size: 0.75rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--color-accent-text);
  margin-bottom: var(--space-2);
}
.chroma-card-title {
  font-family: var(--font-display);
  font-size: 1.75rem; font-weight: 700; letter-spacing: -0.01em;
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
}
.chroma-card-text { font-size: 0.9375rem; color: var(--color-text-secondary); line-height: 1.6; margin-bottom: var(--space-6); min-height: 3.5em; }
.chroma-card-row { display: flex; align-items: center; gap: var(--space-4); margin-bottom: var(--space-6); flex-wrap: wrap; }
.chroma-badge {
  display: inline-flex; align-items: center;
  background: var(--color-accent); color: var(--color-on-accent);
  border-radius: var(--radius-full); padding: var(--space-1) var(--space-3);
  font-size: 0.75rem; font-weight: 700;
}
.chroma-readout { display: flex; align-items: center; gap: var(--space-2); flex-wrap: wrap; }
.chroma-swatch {
  width: 30px; height: 30px; border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  transition: background var(--motion-slow) var(--ease-standard);
}
.chroma-ratio { font-size: 0.75rem; font-family: var(--font-body); color: var(--color-text-tertiary); margin-left: auto; }

.chroma-steps { display: flex; flex-direction: column; }
.chroma-step {
  min-height: 62vh;
  display: flex; flex-direction: column; justify-content: center;
  padding: var(--space-6) 0;
  border-bottom: 1px dashed var(--color-border);
}
.chroma-step:last-child { border-bottom: none; }
.chroma-step-tag { font-size: 0.75rem; font-weight: 700; letter-spacing: 0.08em; color: var(--color-accent-text); margin-bottom: var(--space-3); }
.chroma-step-body { display: flex; flex-direction: column; gap: var(--space-2); }
.chroma-step-role {
  align-self: flex-start;
  font-size: 0.6875rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--color-on-accent); background: var(--color-accent);
  padding: 2px var(--space-2); border-radius: var(--radius-sm);
}
.chroma-step-label { font-family: var(--font-display); font-size: 1.75rem; font-weight: 700; color: var(--color-text-primary); letter-spacing: -0.01em; }
.chroma-step-note { font-size: 1rem; color: var(--color-text-secondary); line-height: 1.55; max-width: 46ch; }

/* guardas: combinações bloqueadas + pareamento de fontes */
.chroma-guards {
  max-width: var(--content-max-width);
  margin: var(--space-16) auto 0;
  display: grid; grid-template-columns: 1fr 1fr; gap: clamp(var(--space-6), 3vw, var(--space-10));
}
.chroma-guard-col { }
.chroma-fonts-head, .chroma-guard-col > .chroma-fonts-head {
  display: flex; align-items: center; gap: var(--space-2);
  font-size: 0.8125rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--color-text-primary); margin-bottom: var(--space-4);
}
.blocked-list { list-style: none; display: flex; flex-direction: column; gap: var(--space-3); }
.blocked-item {
  display: flex; align-items: center; gap: var(--space-3);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-error);
  border-radius: var(--radius-sm);
  padding: var(--space-3) var(--space-4);
}
.blocked-chip {
  position: relative; flex-shrink: 0;
  width: 46px; height: 34px; border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--color-border);
  overflow: hidden;
}
.blocked-dot { position: absolute; inset: 0; }
.blocked-txt { position: relative; font-weight: 700; font-size: 0.9375rem; }
.blocked-motivo { font-size: 0.8125rem; color: var(--color-text-secondary); line-height: 1.45; }
.blocked-empty { color: var(--color-text-tertiary); font-size: 0.875rem; }

.chroma-fonts { display: flex; flex-direction: column; gap: var(--space-3); }
.font-pair {
  display: grid; grid-template-columns: auto 1fr; column-gap: var(--space-3); row-gap: 2px;
  align-items: baseline;
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-3) var(--space-4);
}
.font-pair-ok { border-left: 3px solid var(--color-success); }
.font-pair-bad { border-left: 3px solid var(--color-error); opacity: 0.9; }
.font-pair-badge {
  grid-row: 1 / span 2; align-self: center;
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 0.625rem; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase;
  padding: 3px var(--space-2); border-radius: var(--radius-sm);
}
.font-pair-badge.ok { color: var(--color-success); background: var(--color-success-bg); }
.font-pair-badge.bad { color: var(--color-error); background: var(--color-error-bg); }
.font-pair-title { font-size: 1.125rem; font-weight: 700; color: var(--color-text-primary); }
.font-pair-body { font-size: 0.8125rem; color: var(--color-text-secondary); line-height: 1.4; }

/* ==========================================================================
   CAPÍTULOS (cada seção do JSON)
   ========================================================================== */
.chapter {
  padding: var(--space-20) 0;
  border-top: 1px solid var(--color-border);
  transition: background-color var(--motion-slow) var(--ease-standard);
}
.chapter-inner {
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 0 clamp(var(--space-6), 6vw, var(--space-20));
}

/* recolorização suave: transiciona só os grandes blocos de título/texto de cada
   capítulo (poucos elementos), evitando animar milhares de nós numa página longa.
   :where tem especificidade 0 — nunca sobrepõe as transições dos componentes. */
:where(.hero, .chroma-intro, .chapter-inner) > :where(h1,h2,h3,h4,p),
:where(.page-header, .section-block) > :where(h1,h2,h3,h4,p) {
  transition: color var(--motion-slow) var(--ease-standard);
}

/* ---------- Page Header ---------- */
.page-header { margin-bottom: var(--space-12); padding-bottom: var(--space-8); border-bottom: 1px solid var(--color-border); }
.page-header::before {
  content: ''; display: block; width: 48px; height: 3px;
  background: var(--color-accent); margin-bottom: var(--space-6); border-radius: var(--radius-full);
}
.page-number {
  font-family: var(--font-body);
  font-size: 0.75rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--color-accent-text); margin-bottom: var(--space-2);
}
.page-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 1.5rem + 2.5vw, 2.75rem);
  font-weight: 700; line-height: 1.15; letter-spacing: -0.02em;
  color: var(--color-text-primary); margin-bottom: var(--space-3);
}
.page-description { font-size: 1.0625rem; color: var(--color-text-secondary); max-width: 72ch; line-height: 1.65; }

/* ---------- Section Blocks ---------- */
.section-block { margin-bottom: var(--space-12); }
.section-block-title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 1.125rem + 1.75vw, 1.9375rem);
  font-weight: 600; line-height: 1.2; letter-spacing: -0.01em;
  color: var(--color-text-primary);
  margin-bottom: var(--space-6); padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-border);
}
.subsection-title {
  font-family: var(--font-body);
  font-size: 1.25rem; font-weight: 600; line-height: 1.4;
  color: var(--color-text-primary);
  margin-bottom: var(--space-4); margin-top: var(--space-8);
}

/* ---------- Cards ---------- */
.card {
  background: var(--color-bg-surface);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--motion-fast) var(--ease-decelerate),
              transform var(--motion-fast) var(--ease-decelerate),
              background-color var(--motion-slow) var(--ease-standard),
              color var(--motion-slow) var(--ease-standard);
}
.card:hover { box-shadow: var(--shadow-md); }
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: var(--space-6); }
.card-grid-2 { display: grid; grid-template-columns: repeat(auto-fill, minmax(400px, 1fr)); gap: var(--space-6); }
.card-grid-3 { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: var(--space-6); }
.card-title { font-family: var(--font-body); font-size: 1.125rem; font-weight: 600; margin-bottom: var(--space-3); color: var(--color-text-primary); }
.card-label {
  font-size: 0.75rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--color-accent-text); margin-bottom: var(--space-1);
}
.card-text { font-size: 0.9375rem; color: var(--color-text-secondary); line-height: 1.65; }

/* ---------- Color Swatches ---------- */
.swatch-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: var(--space-5); }
.swatch {
  border-radius: var(--radius-md); overflow: hidden;
  box-shadow: var(--shadow-sm); background: var(--color-bg-surface);
  transition: transform var(--motion-fast) var(--ease-decelerate),
              box-shadow var(--motion-fast) var(--ease-decelerate),
              background-color var(--motion-slow) var(--ease-standard);
}
.swatch:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.swatch-color { height: 100px; display: flex; align-items: flex-end; padding: var(--space-3); }
.swatch-color span {
  font-size: 0.75rem; font-weight: 600; letter-spacing: 0.02em;
  padding: var(--space-1) var(--space-2); border-radius: var(--radius-sm); backdrop-filter: blur(8px);
}
.swatch-info { padding: var(--space-3) var(--space-4); }
.swatch-token { font-size: 0.8125rem; font-weight: 700; color: var(--color-text-primary); font-family: var(--font-body); }
.swatch-role {
  font-size: 0.6875rem; font-weight: 600; letter-spacing: 0.05em; text-transform: uppercase;
  color: var(--color-accent-text); margin-top: var(--space-1);
}
.swatch-hex { font-size: 0.75rem; color: var(--color-text-tertiary); margin-top: var(--space-1); font-family: var(--font-mono, monospace); }
.swatch-usage { font-size: 0.75rem; color: var(--color-text-secondary); margin-top: var(--space-2); line-height: 1.4; }

.neutral-strip { display: flex; border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-sm); margin-bottom: var(--space-6); }
.neutral-strip-item {
  flex: 1; height: 64px; display: flex; align-items: flex-end; justify-content: center;
  padding-bottom: var(--space-1); font-size: 0.5625rem; font-weight: 600; cursor: default; position: relative;
}
.neutral-strip-item::after {
  content: attr(data-token); position: absolute; bottom: -24px;
  font-size: 0.5625rem; color: var(--color-text-tertiary); white-space: nowrap;
}

/* ---------- Typography Specimens ---------- */
.type-specimen {
  padding: var(--space-6); background: var(--color-bg-surface); border-radius: var(--radius-md);
  margin-bottom: var(--space-4); box-shadow: var(--shadow-xs);
  display: flex; gap: var(--space-6); align-items: flex-start;
  transition: background-color var(--motion-slow) var(--ease-standard);
}
.type-specimen-meta { min-width: 140px; flex-shrink: 0; }
.type-specimen-level { font-size: 0.6875rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--color-accent-text); }
.type-specimen-details { font-size: 0.75rem; color: var(--color-text-tertiary); margin-top: var(--space-1); line-height: 1.5; }
.type-specimen-sample { flex: 1; color: var(--color-text-primary); }

/* ---------- Spacing / Shadow / Radius demos ---------- */
.spacing-demo { display: flex; flex-wrap: wrap; gap: var(--space-4); align-items: flex-end; }
.spacing-item { display: flex; flex-direction: column; align-items: center; gap: var(--space-2); }
.spacing-bar { background: var(--color-primary); border-radius: var(--radius-sm); width: 32px; transition: background-color var(--motion-fast) var(--ease-decelerate); }
.spacing-bar:hover { background: var(--color-accent); }
.spacing-label { font-size: 0.625rem; font-weight: 600; color: var(--color-text-tertiary); text-align: center; }
.spacing-value { font-size: 0.5625rem; color: var(--color-text-tertiary); }

.shadow-demo-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: var(--space-6); }
.shadow-demo-box {
  height: 100px; background: var(--color-bg-surface); border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.75rem; font-weight: 600; color: var(--color-text-secondary);
  transition: transform var(--motion-fast) var(--ease-decelerate); padding: var(--space-3); text-align: center;
}
.shadow-demo-box:hover { transform: translateY(-2px); }
.radius-demo-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: var(--space-6); }
.radius-demo-box {
  height: 80px; background: var(--color-primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.6875rem; font-weight: 600; color: var(--color-text-on-dark);
}

/* ---------- Contrast / breakpoint tables ---------- */
.contrast-table, .bp-table {
  width: 100%; border-collapse: separate; border-spacing: 0;
  border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-sm);
  font-size: 0.8125rem;
}
.contrast-table th, .contrast-table td, .bp-table th, .bp-table td {
  padding: var(--space-3) var(--space-4); text-align: left; border-bottom: 1px solid var(--color-border);
}
.contrast-table th, .bp-table th {
  background: var(--color-secondary); color: var(--color-text-on-dark);
  font-weight: 600; font-size: 0.75rem; letter-spacing: 0.03em;
}
.bp-table td { font-size: 0.875rem; }
.contrast-table td, .bp-table td { background: var(--color-bg-surface); transition: background-color var(--motion-slow) var(--ease-standard); }
.contrast-table tr:last-child td, .bp-table tr:last-child td { border-bottom: none; }
.contrast-pass { color: var(--color-success); font-weight: 700; }
.contrast-fail { color: var(--color-error); font-weight: 700; }
.contrast-preview {
  display: inline-flex; align-items: center; justify-content: center;
  padding: var(--space-1) var(--space-3); border-radius: var(--radius-sm);
  font-size: 0.6875rem; font-weight: 700; min-width: 48px; text-align: center;
}

/* ---------- Component demos / inputs / wireframe ---------- */
.component-demo {
  background: var(--color-bg-surface); border-radius: var(--radius-md);
  padding: var(--space-8); margin-bottom: var(--space-6); box-shadow: var(--shadow-sm);
  transition: background-color var(--motion-slow) var(--ease-standard);
}
.component-demo-label {
  font-size: 0.6875rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--color-accent-text); margin-bottom: var(--space-4);
}
.component-demo-row { display: flex; flex-wrap: wrap; gap: var(--space-4); align-items: center; }
.input-field { display: flex; flex-direction: column; gap: var(--space-1); max-width: 360px; width: 100%; }
.input-label { font-family: var(--font-body); font-size: 0.875rem; font-weight: 600; letter-spacing: 0.03em; color: var(--color-text-primary); }
.input-error-msg { display: flex; align-items: center; gap: var(--space-1); font-size: 0.75rem; color: var(--color-error); }

.wireframe { border: 2px solid var(--color-border-strong); border-radius: var(--radius-md); overflow: hidden; margin-bottom: var(--space-6); }
.wireframe-section {
  padding: var(--space-6) var(--space-8); display: flex; align-items: center; justify-content: space-between;
  border-bottom: 1px solid var(--color-border); transition: background-color var(--motion-fast) var(--ease-decelerate);
}
.wireframe-section:last-child { border-bottom: none; }
.wireframe-section:hover { opacity: 0.9; }
.wireframe-section-name { font-size: 0.875rem; font-weight: 600; }
.wireframe-section-role { font-size: 0.75rem; opacity: 0.7; max-width: 50%; text-align: right; }

/* ---------- Info / status / pending ---------- */
.info-block {
  display: flex; align-items: flex-start; gap: var(--space-4); padding: var(--space-5);
  background: var(--color-info-bg); border-radius: var(--radius-md);
  border-left: 3px solid var(--color-info); margin-bottom: var(--space-6);
}
.info-block-icon { color: var(--color-info); font-size: 1.25rem; flex-shrink: 0; margin-top: 2px; }
.info-block-text { font-size: 0.9375rem; color: var(--color-text-primary); line-height: 1.6; }
.pending-badge {
  display: inline-flex; align-items: center; gap: var(--space-2);
  background: var(--color-warning-bg); color: var(--color-warning);
  border-radius: var(--radius-full); padding: var(--space-1) var(--space-3);
  font-size: 0.75rem; font-weight: 600;
}
.pending-section { text-align: center; padding: var(--space-20) var(--space-8); }
.pending-section .pending-icon { font-size: 3rem; color: var(--color-text-tertiary); margin-bottom: var(--space-4); }
.pending-section .pending-text { font-size: 1.125rem; color: var(--color-text-secondary); }
.status-complete { display: inline-flex; align-items: center; gap: var(--space-1); color: var(--color-success); font-weight: 600; font-size: 0.8125rem; }
.status-pending { display: inline-flex; align-items: center; gap: var(--space-1); color: var(--color-warning); font-weight: 600; font-size: 0.8125rem; }

/* ---------- Density / moment / kv / motion ---------- */
.density-demo {
  padding: var(--space-6); background: var(--color-bg-surface); border-radius: var(--radius-md);
  margin-bottom: var(--space-4); box-shadow: var(--shadow-sm);
  transition: background-color var(--motion-slow) var(--ease-standard);
}
.density-label { font-size: 0.6875rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--color-accent-text); margin-bottom: var(--space-2); }

.moment-card {
  background: var(--color-bg-surface); border-radius: var(--radius-md); overflow: hidden;
  box-shadow: var(--shadow-sm); transition: background-color var(--motion-slow) var(--ease-standard);
}
.moment-card-header { background: var(--color-primary); padding: var(--space-4) var(--space-6); color: var(--color-text-on-dark); }
.moment-card-header h4 { font-family: var(--font-display); font-size: 1.25rem; font-weight: 600; }
.moment-card-body { padding: var(--space-6); }
.moment-card-where { font-size: 0.8125rem; color: var(--color-text-secondary); margin-bottom: var(--space-3); }
.moment-card-desc { font-size: 0.9375rem; color: var(--color-text-primary); line-height: 1.65; margin-bottom: var(--space-4); }
.moment-card-tokens { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.token-tag {
  display: inline-flex; align-items: center; padding: var(--space-1) var(--space-2);
  background: var(--color-bg-page); border: 1px solid var(--color-border); border-radius: var(--radius-sm);
  font-size: 0.6875rem; font-weight: 600; color: var(--color-text-secondary); font-family: var(--font-body);
}

.kv-list { display: flex; flex-direction: column; gap: var(--space-4); }
.kv-item { display: flex; flex-direction: column; gap: var(--space-1); padding-bottom: var(--space-4); border-bottom: 1px solid var(--color-border); }
.kv-key { font-size: 0.8125rem; font-weight: 600; color: var(--color-text-secondary); letter-spacing: 0.02em; }
.kv-value { font-size: 0.9375rem; color: var(--color-text-primary); line-height: 1.65; }

.motion-demo-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: var(--space-6); }
.motion-demo-card {
  background: var(--color-bg-surface); border-radius: var(--radius-md); padding: var(--space-6); text-align: center;
  box-shadow: var(--shadow-sm); transition: background-color var(--motion-slow) var(--ease-standard);
}
.motion-demo-circle { width: 48px; height: 48px; border-radius: 50%; background: var(--color-primary); margin: 0 auto var(--space-4); cursor: pointer; }
.motion-demo-circle:hover { transform: scale(1.3); }
.motion-demo-name { font-size: 0.875rem; font-weight: 600; color: var(--color-text-primary); margin-bottom: var(--space-1); }
.motion-demo-value { font-size: 0.75rem; color: var(--color-text-tertiary); }

/* ---------- Persona / principle ---------- */
.persona-card { background: var(--color-bg-surface); border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-sm); }
.persona-card-header { background: var(--color-primary); padding: var(--space-6); color: var(--color-text-on-dark); }
.persona-card-name { font-family: var(--font-display); font-size: 1.75rem; font-weight: 700; margin-bottom: var(--space-1); }
.persona-card-archetype { font-size: 0.875rem; color: var(--color-accent); font-weight: 600; }
.persona-card-quote {
  font-family: var(--font-display); font-size: 1.125rem; font-style: italic; opacity: 0.9;
  margin-top: var(--space-3); padding-left: var(--space-4); border-left: 2px solid var(--color-accent);
}
.persona-card-body { padding: var(--space-6); }

.principle-card { background: var(--color-bg-surface); border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-sm); transition: background-color var(--motion-slow) var(--ease-standard); }
.principle-card-number { background: var(--color-primary); color: var(--color-accent); padding: var(--space-4) var(--space-6); display: flex; align-items: center; gap: var(--space-4); }
.principle-card-num { font-family: var(--font-display); font-size: 2.5rem; font-weight: 700; line-height: 1; }
.principle-card-name { font-family: var(--font-body); font-size: 1.125rem; font-weight: 600; color: var(--color-text-on-dark); }
.principle-card-body { padding: var(--space-6); }
.principle-enunciado { font-size: 0.9375rem; color: var(--color-text-primary); line-height: 1.65; margin-bottom: var(--space-4); }
.principle-test {
  background: var(--color-info-bg); border-radius: var(--radius-sm); padding: var(--space-4);
  font-size: 0.875rem; color: var(--color-text-primary); line-height: 1.5; margin-bottom: var(--space-4);
  border-left: 3px solid var(--color-info);
}
.principle-example { font-size: 0.875rem; color: var(--color-text-secondary); line-height: 1.6; font-style: italic; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-bg-sidebar);
  color: var(--color-text-on-dark);
  padding: var(--space-10) clamp(var(--space-6), 6vw, var(--space-20));
}
.site-footer-inner {
  max-width: var(--content-max-width); margin: 0 auto;
  display: flex; align-items: baseline; justify-content: space-between; flex-wrap: wrap; gap: var(--space-3);
  font-family: var(--font-display); font-size: 1.25rem; font-weight: 700;
}
.site-footer-meta { font-family: var(--font-body); font-size: 0.8125rem; font-weight: 400; opacity: 0.7; }

/* ---------- Utilities ---------- */
.text-accent { color: var(--color-accent-text); }
.text-primary-brand { color: var(--color-primary); }
.text-muted { color: var(--color-text-secondary); }
.mt-2 { margin-top: var(--space-2); } .mt-4 { margin-top: var(--space-4); } .mt-6 { margin-top: var(--space-6); } .mt-8 { margin-top: var(--space-8); }
.mb-2 { margin-bottom: var(--space-2); } .mb-4 { margin-bottom: var(--space-4); } .mb-6 { margin-bottom: var(--space-6); }
.flex-wrap-gap { display: flex; flex-wrap: wrap; gap: var(--space-3); }
.list-clean { list-style: none; }
.list-clean li { padding: var(--space-2) 0; border-bottom: 1px solid var(--color-border); font-size: 0.9375rem; }
.list-clean li:last-child { border-bottom: none; }

details > summary::-webkit-details-marker { display: none; }
details[open] > summary .ph-caret-right { transform: rotate(90deg); }
details > summary .ph-caret-right { transition: transform var(--motion-fast) var(--ease-decelerate); }

/* ---------- Scrollbar ---------- */
.main-content { scrollbar-width: thin; scrollbar-color: var(--color-border-strong) transparent; }
.main-content::-webkit-scrollbar { width: 6px; }
.main-content::-webkit-scrollbar-thumb { background: var(--color-border-strong); border-radius: var(--radius-full); }

/* ==========================================================================
   DOCK DE CONTROLES (barras de cor e fonte — sempre visível, troca manual)
   ========================================================================== */
.preview-dock {
  position: fixed;
  right: var(--space-6);
  bottom: var(--space-6);
  z-index: 140;
  width: min(360px, calc(100vw - var(--space-8)));
  background: var(--color-bg-surface);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg, var(--radius-md));
  box-shadow: var(--shadow-lg, var(--shadow-md));
  overflow: hidden;
  transition: background-color var(--motion-slow) var(--ease-standard),
              border-color var(--motion-slow) var(--ease-standard);
}
.dock-toggle {
  width: 100%;
  display: flex; align-items: center; gap: var(--space-2);
  background: var(--color-primary);
  color: var(--color-text-on-dark);
  border: none;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-body);
  font-size: 0.8125rem; font-weight: 600; letter-spacing: 0.03em;
  cursor: pointer;
}
.dock-toggle .dock-caret { margin-left: auto; transition: transform var(--motion-fast) var(--ease-decelerate); }
.preview-dock.collapsed .dock-caret { transform: rotate(-90deg); }
.dock-toggle > i:first-child { color: var(--color-accent); font-size: 1.125rem; }
.dock-body {
  padding: var(--space-5) var(--space-4);
  display: flex; flex-direction: column; gap: var(--space-5);
  max-height: 60vh; overflow-y: auto;
}
.preview-dock.collapsed .dock-body { display: none; }

.dock-control { display: flex; flex-direction: column; gap: var(--space-2); }
.dock-control-head { display: flex; align-items: baseline; justify-content: space-between; gap: var(--space-3); }
.dock-control-title {
  display: inline-flex; align-items: center; gap: var(--space-1);
  font-size: 0.6875rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--color-accent-text);
}
.dock-control-value {
  font-family: var(--font-display);
  font-size: 0.9375rem; font-weight: 700; color: var(--color-text-primary);
  text-align: right; line-height: 1.2;
}

/* range estilizado */
.dock-range {
  -webkit-appearance: none; appearance: none;
  width: 100%; height: 6px; margin: var(--space-2) 0;
  background: var(--color-border); border-radius: var(--radius-full);
  outline-offset: 3px; cursor: pointer;
}
.dock-range::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 22px; height: 22px; border-radius: 50%;
  background: var(--color-accent);
  border: 3px solid var(--color-bg-surface);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
}
.dock-range::-moz-range-thumb {
  width: 20px; height: 20px; border-radius: 50%;
  background: var(--color-accent);
  border: 3px solid var(--color-bg-surface);
  box-shadow: var(--shadow-sm); cursor: pointer;
}
.dock-range:focus-visible { outline: var(--focus-ring-width) solid var(--focus-ring-color); }

.dock-readout { display: flex; align-items: center; gap: var(--space-2); }
.dock-readout .chroma-swatch { width: 26px; height: 26px; }
.dock-readout .chroma-ratio { margin-left: auto; font-size: 0.75rem; color: var(--color-text-tertiary); }
.chroma-swatch {
  width: 30px; height: 30px; border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  transition: background var(--motion-fast) var(--ease-decelerate);
}
.chroma-ratio { font-size: 0.75rem; font-family: var(--font-body); color: var(--color-text-tertiary); }

.dock-fontpreview {
  font-size: 1.5rem; font-weight: 700; line-height: 1.2;
  color: var(--color-text-primary);
  padding: var(--space-2) var(--space-3);
  background: var(--color-bg-page);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

/* ==========================================================================
   GALERIA DE ESQUEMAS (na seção "Combinações")
   ========================================================================== */
.scheme-gallery {
  max-width: var(--content-max-width);
  margin: 0 auto var(--space-16);
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-5);
}
.scheme-tile {
  display: flex; flex-direction: column; gap: var(--space-3);
  text-align: left; cursor: pointer;
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  box-shadow: var(--shadow-xs);
  transition: transform var(--motion-fast) var(--ease-decelerate),
              box-shadow var(--motion-fast) var(--ease-decelerate),
              border-color var(--motion-fast) var(--ease-decelerate);
}
.scheme-tile:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.scheme-tile.active { border-color: var(--color-accent); box-shadow: 0 0 0 2px var(--color-accent); }
.scheme-tile-swatches { display: flex; height: 52px; border-radius: var(--radius-sm); overflow: hidden; }
.scheme-tile-swatches > span { flex: 1; }
.scheme-tile-meta { display: flex; flex-direction: column; gap: 2px; }
.scheme-tile-role {
  align-self: flex-start;
  font-size: 0.625rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--color-on-accent); background: var(--color-accent);
  padding: 1px var(--space-2); border-radius: var(--radius-sm);
}
.scheme-tile-name { font-family: var(--font-display); font-size: 1.0625rem; font-weight: 700; color: var(--color-text-primary); }
.scheme-tile-ratio { font-size: 0.75rem; color: var(--color-text-tertiary); }

/* dica do hero (substitui o antigo indicador de scroll) */
.hero-hint {
  display: inline-flex; align-items: center; gap: var(--space-2);
  margin-top: var(--space-8);
  font-size: 0.875rem; color: var(--scheme-text-on-bg); opacity: 0.8;
}
.hero-hint i { color: var(--color-accent-text); font-size: 1.125rem; }
.mobile-header-spacer { width: var(--touch-target-min); }

/* ==========================================================================
   RESPONSIVO
   ========================================================================== */
@media (max-width: 1023px) {
  .mobile-header { display: flex; }
  .sidebar { transform: translateX(-100%); transition: transform var(--motion-slow) var(--ease-standard); }
  .sidebar.open { transform: translateX(0); }
  .sidebar-overlay.active { display: block; }
  .main-content { margin-left: 0; padding-top: 56px; }
  .desktop-only { display: none !important; }
  .hero { min-height: 84vh; padding-top: var(--space-16); }
  .chroma-guards { grid-template-columns: 1fr; gap: var(--space-10); }
  /* dock vira barra inferior full-width; conteúdo ganha respiro no fim */
  .preview-dock { right: 0; left: 0; bottom: 0; width: 100%; border-radius: var(--radius-md) var(--radius-md) 0 0; }
  .site-footer { padding-bottom: var(--space-24); }
  .card-grid, .card-grid-2 { grid-template-columns: 1fr; }
  .swatch-grid { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); }
  .type-specimen { flex-direction: column; gap: var(--space-3); }
  .type-specimen-meta { min-width: auto; }
  .contrast-table { font-size: 0.75rem; }
  .contrast-table th, .contrast-table td { padding: var(--space-2) var(--space-3); }
  .neutral-strip { flex-wrap: wrap; }
  .neutral-strip-item { min-width: 40px; height: 48px; }
}
@media (max-width: 639px) {
  .chapter { padding: var(--space-16) 0; }
  .page-header { margin-bottom: var(--space-8); }
  .section-block { margin-bottom: var(--space-8); }
  .card-grid-3 { grid-template-columns: 1fr; }
  .shadow-demo-grid, .radius-demo-grid { grid-template-columns: 1fr 1fr; }
  .hero-meta { gap: var(--space-6); }
}

/* prefers-reduced-motion é reforçado pelo CSS gerado (theme.js, 13.5);
   aqui garantimos que a dica de scroll do hero não anime */
@media (prefers-reduced-motion: reduce) {
  .hero-scroll-hint { animation: none; }
}