/* ==========================================================================
   TWOCATS · SISTEMA DE DESIGN & PADRÃO DE ARQUITETURA
   Baseado estritamente em DESIGN.md (Revisão 01/10/2026)
   ========================================================================== */

:root {
  /* Cor */
  --color-ink: #0F172A;
  --color-ink-2: #475569;
  --color-ink-3: #94A3B8;
  --color-paper: #FFFFFF;
  --color-paper-2: #F8FAFC;
  --color-line: #E2E8F0;
  --color-action: #25D366;
  --color-action-hover: #1FB855;

  /* Espaço: escala de 4 px */
  --space-1: 0.25rem;  /* 4px  */
  --space-2: 0.5rem;   /* 8px  */
  --space-3: 0.75rem;  /* 12px */
  --space-4: 1rem;     /* 16px */
  --space-5: 1.5rem;   /* 24px */
  --space-6: 2rem;     /* 32px */
  --space-7: 3rem;     /* 48px */
  --space-8: 4rem;     /* 64px */
  --space-9: 6rem;     /* 96px */
  --space-10: 8rem;    /* 128px */

  /* Tipografia: seis degraus, fluidos entre 390 e 1200 px */
  --text-sm:   clamp(0.875rem, 0.85rem + 0.1vw, 0.9375rem);  /* 14–15px */
  --text-base: clamp(1rem, 0.95rem + 0.2vw, 1.0625rem);      /* 16–17px */
  --text-lg:   clamp(1.125rem, 1.05rem + 0.35vw, 1.25rem);    /* 18–20px */
  --text-xl:   clamp(1.375rem, 1.2rem + 0.8vw, 1.75rem);      /* 22–28px */
  --text-2xl:  clamp(1.75rem, 1.4rem + 1.6vw, 2.5rem);        /* 28–40px */
  --text-3xl:  clamp(2.125rem, 1.5rem + 2.8vw, 3.5rem);       /* 34–56px */

  --leading-display: 1.08;
  --leading-heading: 1.15;
  --leading-body: 1.55;
  --measure: 58ch;

  /* Forma */
  --radius-button: 8px;
  --radius-device: 40px;
  --shadow-device: 0 24px 48px -16px rgba(15, 23, 42, 0.25);
  --shadow-button: 0 1px 2px rgba(15, 23, 42, 0.08);

  /* Movimento */
  --ease: cubic-bezier(0.2, 0, 0, 1);
  --duration-fast: 120ms;
  --duration-base: 200ms;

  /* Grade */
  --container: 1120px;
  --gutter: var(--space-4);
}

@media (min-width: 900px) {
  :root {
    --gutter: var(--space-6);
  }
}

@media (prefers-reduced-motion: reduce) {
  :root {
    --duration-fast: 0ms;
    --duration-base: 0ms;
  }
}

/* ==========================================================================
   RESET & BASE
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--color-paper);
  color: var(--color-ink-2);
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  line-height: var(--leading-body);
  background-color: var(--color-paper);
  background-image: radial-gradient(rgba(15, 23, 42, 0.08) 1px, transparent 1px);
  background-size: 24px 24px;
}

:focus-visible {
  outline: 2px solid var(--color-ink);
  outline-offset: 2px;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ==========================================================================
   HEADER / NAVBAR
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-line);
  transition: box-shadow var(--duration-base) var(--ease);
}

.site-header.is-scrolled {
  box-shadow: 0 4px 20px -4px rgba(15, 23, 42, 0.08);
}

.header-container {
  max-width: var(--container);
  margin-inline: auto;
  padding-block: var(--space-4);
  padding-inline: var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
}

.brand-icon {
  width: 26px;
  height: 26px;
}

.brand-name {
  font-weight: 700;
  font-size: var(--text-lg);
  letter-spacing: -0.02em;
  color: var(--color-ink);
}

.nav-links {
  display: none;
  align-items: center;
  gap: var(--space-6);
}

.nav-links a {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-ink-2);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease);
}

.nav-links a:hover {
  color: var(--color-ink);
}

.header-actions {
  display: none;
}

/* ==========================================================================
   BOTÃO (Padrão de 8px, sem ovos gigantes)
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: inherit;
  font-weight: 600;
  font-size: var(--text-base);
  text-decoration: none;
  border-radius: var(--radius-button);
  border: none;
  cursor: pointer;
  box-shadow: var(--shadow-button);
  transition: background-color var(--duration-fast) var(--ease);
  white-space: nowrap;
}

.btn-whatsapp {
  background-color: var(--color-action);
  color: #FFFFFF;
}

.btn-whatsapp:hover {
  background-color: var(--color-action-hover);
}

.icon-wa {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.header-btn {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
}

.btn-hero,
.btn-contact {
  width: 100%;
  padding-block: var(--space-4);
  padding-inline: var(--space-6);
}

@media (min-width: 600px) {
  .btn-hero,
  .btn-contact {
    width: auto;
  }
}

/* ==========================================================================
   2. HERO SECTION (Duas Colunas com Produto Real à Direita)
   ========================================================================== */
.hero-section {
  padding-block-start: var(--space-7);
  padding-block-end: var(--space-8);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  align-items: center;
}

.hero-content {
  max-width: var(--measure);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 6px 12px;
  background-color: var(--color-paper-2);
  border: 1px solid var(--color-line);
  border-radius: 999px;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-ink-2);
  margin-bottom: var(--space-4);
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-action);
  box-shadow: 0 0 0 3px rgba(37, 211, 102, 0.2);
}

.hero-title {
  font-size: var(--text-3xl);
  font-weight: 700;
  line-height: var(--leading-display);
  letter-spacing: -0.02em;
  color: var(--color-ink);
  margin-bottom: var(--space-4);
}

.hero-lead {
  font-size: var(--text-lg);
  line-height: var(--leading-body);
  color: var(--color-ink-2);
  margin-bottom: var(--space-6);
}

.hero-action-block {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-3);
}

.hero-note {
  font-size: var(--text-sm);
  color: var(--color-ink-3);
}

.hero-features {
  margin-top: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-ink-2);
}

.hero-features span {
  color: var(--color-action-hover);
  font-weight: 700;
  margin-right: 4px;
}

/* ==========================================================================
   O MOTOR ARQUITETURAL TWOCATS (BLUEPRINT AUTORAL)
   ========================================================================== */
.hero-device-wrapper {
  display: flex;
  justify-content: center;
  margin-top: var(--space-5);
  width: 100%;
}

.engine-frame {
  width: 100%;
  max-width: 380px;
  border-radius: 24px;
  border: 1px solid var(--color-line);
  background-color: #FFFFFF;
  box-shadow: 0 10px 30px -10px rgba(15, 23, 42, 0.08), 0 1px 3px rgba(15, 23, 42, 0.04);
  overflow: hidden;
  transition: transform var(--duration-base) var(--ease), box-shadow var(--duration-base) var(--ease);
}

.engine-frame:hover {
  box-shadow: 0 20px 40px -12px rgba(15, 23, 42, 0.12);
}

.engine-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background-color: var(--color-paper-2);
  border-bottom: 1px solid var(--color-line);
}

.engine-dots {
  display: flex;
  gap: 5px;
}

.engine-dots span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-line);
}

.engine-dots span:nth-child(1) { background-color: #CBD5E1; }

.engine-domain {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background-color: #FFFFFF;
  padding: 3px 10px;
  border-radius: 6px;
  border: 1px solid var(--color-line);
  font-size: 11px;
  font-weight: 600;
  color: var(--color-ink-2);
}

.domain-lock {
  color: var(--color-action-hover);
}

.engine-ping {
  font-size: 11px;
  font-weight: 700;
  color: var(--color-action-hover);
  background-color: rgba(37, 211, 102, 0.1);
  padding: 2px 6px;
  border-radius: 4px;
}

.engine-screen {
  padding: var(--space-4);
  background-color: #FFFFFF;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.engine-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.engine-brand-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.brand-avatar {
  width: 20px;
  height: 20px;
  border-radius: 6px;
  background-color: var(--color-ink);
}

.engine-brand-pill strong {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-ink);
}

.engine-status-tag {
  font-size: 11px;
  font-weight: 600;
  color: var(--color-ink-2);
  background-color: var(--color-paper-2);
  padding: 3px 8px;
  border-radius: 999px;
  border: 1px solid var(--color-line);
}

/* Card de Pedido no Motor */
.blueprint-card {
  padding: var(--space-4);
  background-color: var(--color-paper-2);
  border: 1px solid var(--color-line);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.blueprint-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.blueprint-tag {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-ink-3);
}

.blueprint-price {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-ink);
}

.blueprint-item-title {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-ink);
}

.blueprint-item-sub {
  font-size: var(--text-sm);
  color: var(--color-ink-2);
  line-height: 1.4;
}

.blueprint-action-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--space-2);
  padding-top: var(--space-2);
  border-top: 1px solid var(--color-line);
}

.blueprint-btn-preview {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background-color: var(--color-action);
  color: #FFFFFF;
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
}

.icon-wa-mini {
  width: 14px;
  height: 14px;
  fill: currentColor;
}

.blueprint-check {
  font-size: 11px;
  font-weight: 700;
  color: var(--color-action-hover);
}

/* Telemetria de Engenharia */
.engine-telemetry {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-2);
}

.telemetry-pill {
  padding: 8px;
  background-color: var(--color-paper-2);
  border: 1px solid var(--color-line);
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  text-align: center;
}

.telemetry-pill strong {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-ink);
}

.telemetry-pill span {
  font-size: 10px;
  color: var(--color-ink-3);
  margin-top: 2px;
}

.engine-flow-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-2);
  font-size: 11px;
  color: var(--color-ink-3);
  border-top: 1px solid var(--color-line);
}

.flow-step span {
  font-weight: 700;
  color: var(--color-ink);
  margin-right: 3px;
}

.flow-step.active {
  color: var(--color-action-hover);
  font-weight: 700;
}

.flow-arrow {
  color: var(--color-line);
  font-weight: 700;
}

/* ==========================================================================
   TRILHO TÉCNICO (AUTORIDADE DE ENGENHARIA)
   ========================================================================== */
.tech-rail {
  border-block: 1px solid var(--color-line);
  background-color: #FFFFFF;
  padding-block: var(--space-4);
  margin-bottom: var(--space-7);
}

.tech-rail-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  align-items: flex-start;
}

.tech-rail-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--color-ink-3);
  text-transform: uppercase;
}

.tech-rail-items {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.tech-pill {
  display: inline-flex;
  align-items: center;
  padding: 5px 12px;
  background-color: var(--color-paper-2);
  border: 1px solid var(--color-line);
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-ink-2);
  white-space: nowrap;
}

@media (min-width: 900px) {
  .tech-rail-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

/* ==========================================================================
   SEÇÕES GERAIS
   ========================================================================== */
.section {
  padding-block: var(--space-7);
}

.section-tinted {
  background-color: var(--color-paper-2);
}

.section-intro-block {
  margin-bottom: var(--space-6);
  max-width: var(--measure);
}

.section-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--color-ink-3);
  text-transform: uppercase;
  margin-bottom: var(--space-2);
}

.section-heading {
  font-size: var(--text-2xl);
  font-weight: 700;
  line-height: var(--leading-heading);
  letter-spacing: -0.015em;
  color: var(--color-ink);
  margin-bottom: var(--space-3);
}

.section-lead {
  font-size: var(--text-lg);
  color: var(--color-ink);
  margin-bottom: var(--space-2);
}

.section-sublead {
  font-size: var(--text-base);
  color: var(--color-ink-3);
}

/* ==========================================================================
   3. O QUE FAZEMOS (SHOWCASE COM BLUEPRINTS ARQUITETURAIS)
   ========================================================================== */
.showcase-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  margin-bottom: var(--space-7);
}

.showcase-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.blueprint-preview-box {
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--color-line);
  background-color: #FFFFFF;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--duration-fast) var(--ease), box-shadow var(--duration-fast) var(--ease);
}

.blueprint-preview-box:hover {
  box-shadow: 0 8px 24px -6px rgba(15, 23, 42, 0.08);
}

.preview-mini-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background-color: var(--color-paper-2);
  border-bottom: 1px solid var(--color-line);
}

.preview-num {
  font-size: 11px;
  font-weight: 700;
  color: var(--color-ink);
}

.preview-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--color-ink-3);
  text-transform: uppercase;
}

.preview-visual {
  padding: var(--space-4);
  min-height: 140px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background-color: #FFFFFF;
}

/* Exemplo 1: Loja */
.preview-mock-product {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-line);
  margin-bottom: 12px;
}

.mock-product-thumb {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background-color: var(--color-paper-2);
  border: 1px solid var(--color-line);
  flex-shrink: 0;
}

.mock-product-info {
  display: flex;
  flex-direction: column;
}

.mock-line-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-ink);
}

.mock-line-price {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-action-hover);
}

.mock-cta-wa {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--color-paper-2);
  border: 1px solid var(--color-line);
  padding: 8px 10px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 600;
  color: var(--color-ink);
}

.mock-icon {
  width: 14px;
  height: 14px;
  fill: var(--color-action);
}

/* Exemplo 2: Institucional */
.mock-brand-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.mock-company-name {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-ink);
}

.mock-company-geo {
  font-size: 12px;
  color: var(--color-ink-3);
}

.mock-company-actions {
  display: flex;
  gap: 8px;
  margin-top: 6px;
}

.mock-badge-action {
  font-size: 11px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 4px;
  background-color: var(--color-paper-2);
  border: 1px solid var(--color-line);
  color: var(--color-ink-2);
}

.mock-badge-action.active {
  background-color: var(--color-action);
  border-color: var(--color-action);
  color: #FFFFFF;
}

/* Exemplo 3: Sistema */
.mock-dashboard-table {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 12px;
}

.table-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 8px;
  background-color: var(--color-paper-2);
  border-radius: 4px;
  color: var(--color-ink);
}

.table-row.head {
  background-color: transparent;
  color: var(--color-ink-3);
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding-block: 2px;
}

.badge-ok {
  color: var(--color-action-hover);
  font-weight: 700;
  font-size: 11px;
}

.badge-warn {
  color: #D97706;
  font-weight: 700;
  font-size: 11px;
}

/* Exemplo 4: Modular */
.mock-upgrade-flow {
  display: flex;
  flex-direction: column;
  gap: 8px;
  text-align: center;
}

.mock-node {
  padding: 8px 10px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
}

.mock-node.top {
  background-color: var(--color-paper-2);
  border: 1px solid var(--color-line);
  color: var(--color-ink);
}

.mock-flow-line {
  font-size: 11px;
  font-weight: 600;
  color: var(--color-ink-3);
}

.mock-node.bottom {
  background-color: #F1F5F9;
  color: var(--color-ink-2);
  border: 1px dashed var(--color-line);
}

.showcase-title {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: var(--space-2);
}

.showcase-desc {
  font-size: var(--text-base);
  color: var(--color-ink-2);
  max-width: var(--measure);
}

.closing-banner {
  padding-block-start: var(--space-6);
  border-top: 1px solid var(--color-line);
  font-size: var(--text-base);
  color: var(--color-ink-2);
  max-width: var(--measure);
}

/* ==========================================================================
   4. COMO TRABALHAMOS (TRILHO NUMERADO 01 A 04)
   ========================================================================== */
.process-track {
  display: flex;
  flex-direction: column;
}

.process-row {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: var(--space-4);
  padding-block: var(--space-6);
  border-bottom: 1px solid var(--color-line);
}

.process-row:first-child {
  border-top: 1px solid var(--color-line);
}

.process-rail {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-ink-3);
  line-height: 1;
}

.process-body {
  max-width: var(--measure);
}

.process-title {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: var(--space-2);
}

.process-text {
  font-size: var(--text-base);
  color: var(--color-ink-2);
}

/* ==========================================================================
   5. O QUE VEM DE SÉRIE
   ========================================================================== */
.standards-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  margin-bottom: var(--space-7);
}

.standard-item {
  max-width: var(--measure);
}

.standard-title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: var(--space-2);
}

.standard-desc {
  font-size: var(--text-base);
  color: var(--color-ink-2);
}

/* Gaveta de Credenciais Técnicas */
.credentials-drawer-box {
  margin-top: var(--space-7);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-line);
  max-width: var(--measure);
}

.credentials-drawer summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-ink);
  padding-block: var(--space-2);
}

.credentials-drawer summary::-webkit-details-marker {
  display: none;
}

.drawer-icon {
  font-size: var(--text-lg);
  color: var(--color-ink-3);
  transition: transform var(--duration-fast) var(--ease);
}

.credentials-drawer[open] .drawer-icon {
  transform: rotate(180deg);
}

.drawer-content {
  padding-block-start: var(--space-4);
}

.stats-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.stats-list li {
  font-size: var(--text-sm);
  color: var(--color-ink-2);
}

.stats-list strong {
  color: var(--color-ink);
  font-weight: 600;
}

/* ==========================================================================
   6. CONTATO DIRETO (Sem Caixas Falsas)
   ========================================================================== */
.contact-container {
  max-width: var(--measure);
  padding-block: var(--space-6);
}

.contact-title {
  font-size: var(--text-2xl);
  font-weight: 700;
  line-height: var(--leading-heading);
  letter-spacing: -0.015em;
  color: var(--color-ink);
  margin-bottom: var(--space-3);
}

.contact-text {
  font-size: var(--text-lg);
  color: var(--color-ink-2);
  margin-bottom: var(--space-6);
}

.contact-action-box {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-3);
}

.contact-note {
  font-size: var(--text-sm);
  color: var(--color-ink-3);
}

.contact-direct {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-ink);
}

/* ==========================================================================
   7. RODAPÉ
   ========================================================================== */
.site-footer {
  border-top: 1px solid var(--color-line);
  padding-block: var(--space-7);
}

.footer-layout {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-ink-3);
}

.footer-title {
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: var(--space-1);
}

/* ==========================================================================
   BARRA FIXA MOBILE (Aparece só quando o botão do hero sai da tela)
   ========================================================================== */
.mobile-sticky-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  z-index: 99;
  background-color: rgba(255, 255, 255, 0.98);
  border-top: 1px solid var(--color-line);
  padding: var(--space-3) var(--gutter);
  transform: translateY(100%);
  opacity: 0;
  pointer-events: none;
  transition: transform var(--duration-base) var(--ease), opacity var(--duration-base) var(--ease);
}

.mobile-sticky-bar.is-visible {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.btn-sticky {
  width: 100%;
  padding-block: var(--space-3);
}

/* ==========================================================================
   MEDIA QUERIES (Exatamente 3 breakpoints min-width: 600, 900, 1200)
   ========================================================================== */
@media (min-width: 600px) {
  .showcase-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .site-header {
    background-color: var(--color-paper);
  }

  .nav-links {
    display: flex;
  }

  .header-actions {
    display: block;
  }

  .hero-section {
    padding-block: var(--space-9);
  }

  .hero-grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: var(--space-8);
  }

  .hero-device-wrapper {
    margin-top: 0;
    justify-content: flex-end;
  }

  .section {
    padding-block: var(--space-9);
  }

  .standards-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-7);
  }

  .footer-layout {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
  }

  .mobile-sticky-bar {
    display: none !important;
  }
}

@media (min-width: 1200px) {
  .showcase-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-5);
  }

  .blueprint-preview-box {
    max-width: 100%;
  }
}