/* ⚠️ ATENÇÃO: Ao alterar este arquivo, atualize também docs/pillars/4-ux-ui.md */
/* O código é a fonte da verdade, mas o documento serve como referência de decisão. */

/* === Variáveis CSS === */
:root {
  /* Cores */
  --color-bg-dark: #1a1d23;
  --color-bg-dark-hover: #252830;
  --color-bg-light: #f5f6f8;
  --color-bg-card: #ffffff;
  --color-text-primary: #e4e6eb;
  --color-text-secondary: #8b8fa3;
  --color-text-dark: #1a1d23;
  --color-text-muted: #6b7280;
  --color-accent: #2563eb;
  --color-accent-hover: #1d4ed8;
  --color-accent-light: #dbeafe;
  --color-success: #16a34a;
  --color-warning: #d97706;
  --color-danger: #dc2626;

  /* Espaçamento (base 4px) */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 12px;
  --space-base: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;

  /* Tipografia */
  --font-primary: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Breakpoints (referência) */
  --bp-tablet: 768px;
  --bp-desktop: 1024px;
}

/* === Reset e Estilos Base === */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-primary);
  color: var(--color-text-dark);
  background-color: var(--color-bg-light);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

h1 {
  font-size: clamp(28px, 5vw, 42px);
  font-weight: 600;
  line-height: 1.2;
}

h2 {
  font-size: clamp(22px, 4vw, 28px);
  font-weight: 600;
  line-height: 1.2;
}

h3 {
  font-size: 18px;
  font-weight: 500;
  line-height: 1.3;
}

p {
  font-size: 14px;
  line-height: 1.6;
}

/* === Layout Utilitário === */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.section--dark {
  background-color: var(--color-bg-dark);
  color: var(--color-text-primary);
}

.section--light {
  background-color: var(--color-bg-light);
}

/* === Header === */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-bg-card);
  border-bottom: 1px solid #e5e7eb;
  height: 56px;
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-shrink: 0;
}

.header__logo img {
  height: 32px;
  width: auto;
}

.header__logo-text {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-text-dark);
}

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

.header__nav a {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color 0.2s;
}

.header__nav a:hover {
  color: var(--color-text-dark);
}

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

/* Botão Entrar no mobile (dentro do nav) */
.header__nav .nav-mobile-enter {
  display: none;
}

/* Hamburger */
.nav-toggle__input {
  display: none;
}

.nav-toggle__label {
  display: none;
  cursor: pointer;
  padding: var(--space-sm);
}

.nav-toggle__label svg {
  width: 24px;
  height: 24px;
  stroke: var(--color-text-dark);
  stroke-width: 2;
  fill: none;
}

/* === Botões === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  font-family: var(--font-primary);
  cursor: pointer;
  transition: background-color 0.2s, border-color 0.2s;
  border: none;
  white-space: nowrap;
}

/* Dois class selectors: vence `.header__nav a` e `.prose a` nos botões dentro desses contextos */
.btn.btn-primary {
  background-color: var(--color-accent);
  color: #ffffff;
  text-decoration: none;
}

.btn-primary:hover {
  background-color: var(--color-accent-hover);
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-text-primary);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-ghost:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.btn-lg {
  padding: 14px 28px;
  font-size: 16px;
}

/* === Hero === */
.hero {
  padding: 80px 0;
}

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

.hero__content {
  flex: 1;
}

.hero__content h1 {
  margin-bottom: var(--space-base);
}

.hero__content p {
  font-size: 18px;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
  max-width: 480px;
}

.hero__actions {
  display: flex;
  gap: var(--space-base);
  flex-wrap: wrap;
}

.hero__image {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero__image img {
  width: 100%;
  height: auto;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.35);
}

/* === Features === */
.features {
  padding: 64px 0;
}

.section__header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.section__header h2 {
  margin-bottom: var(--space-sm);
}

.section__subtitle {
  font-size: 16px;
  color: var(--color-text-muted);
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.feature-card {
  background-color: var(--color-bg-card);
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  padding: var(--space-lg);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  transition: box-shadow 0.2s;
}

.feature-card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
}

.feature-card__icon {
  width: 32px;
  height: 32px;
  color: var(--color-accent);
  margin-bottom: var(--space-base);
}

.feature-card h3 {
  margin-bottom: var(--space-sm);
  color: var(--color-text-dark);
}

.feature-card p {
  color: var(--color-text-muted);
}

/* === Como Funciona === */
.how-it-works {
  padding: 64px 0;
  background-color: var(--color-bg-card);
}

.steps {
  display: flex;
  justify-content: center;
  gap: var(--space-2xl);
  margin-top: var(--space-xl);
}

.step {
  flex: 1;
  max-width: 300px;
  text-align: center;
  position: relative;
}

.step__number {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background-color: var(--color-accent);
  color: #ffffff;
  font-size: 20px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-base);
}

.step h3 {
  margin-bottom: var(--space-sm);
  color: var(--color-text-dark);
}

.step p {
  color: var(--color-text-muted);
}

/* Screenshot na seção Como Funciona */
.how-it-works__shot {
  margin: var(--space-2xl) auto 0;
  max-width: 960px;
}

.how-it-works__shot img {
  width: 100%;
  height: auto;
  border-radius: 12px;
  border: 1px solid #e5e7eb;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.12);
}

.how-it-works__shot figcaption {
  margin-top: var(--space-base);
  text-align: center;
  font-size: 13px;
  color: var(--color-text-muted);
}

/* Linha conectora entre passos */
.step:not(:last-child)::after {
  content: '';
  position: absolute;
  top: 24px;
  left: calc(50% + 32px);
  width: calc(100% - 64px);
  height: 2px;
  background-color: #e5e7eb;
}

/* === CTA Final === */
.cta {
  padding: 80px 0;
  text-align: center;
}

.cta__inner {
  max-width: 600px;
  margin: 0 auto;
}

.cta h2 {
  margin-bottom: var(--space-base);
}

.cta p {
  font-size: 18px;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
}

.cta__actions {
  display: flex;
  justify-content: center;
  gap: var(--space-base);
  flex-wrap: wrap;
}

.cta__note {
  margin-top: var(--space-lg);
  margin-bottom: 0 !important;
  font-size: 13px !important;
  color: var(--color-text-secondary);
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

/* === Footer === */
.footer {
  background-color: #111318;
  color: var(--color-text-secondary);
  padding: var(--space-2xl) 0;
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.footer__brand p {
  margin-top: var(--space-sm);
  font-size: 14px;
  color: var(--color-text-secondary);
}

.footer__links h4,
.footer__legal h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-base);
}

.footer__links ul,
.footer__legal ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer__links a,
.footer__legal a {
  font-size: 14px;
  color: var(--color-text-secondary);
  transition: color 0.2s;
}

.footer__links a:hover,
.footer__legal a:hover {
  color: var(--color-text-primary);
}

.footer__divider {
  border: none;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-bottom: var(--space-base);
}

.footer__copyright {
  font-size: 13px;
  text-align: center;
  color: var(--color-text-muted);
}

.footer__legal-id {
  font-size: 13px;
  text-align: center;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xs);
}

.footer__legal-id a {
  color: var(--color-text-secondary);
  text-decoration: underline;
}

.footer__legal-id a:hover {
  color: var(--color-text-primary);
}

/* === Páginas legais e de contato === */
.page-hero {
  padding: var(--space-2xl) 0;
}

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

.page-hero p {
  font-size: 14px;
  color: var(--color-text-secondary);
}

.prose-section {
  padding: var(--space-2xl) 0;
}

.prose {
  max-width: 760px;
}

.prose h2 {
  font-size: 20px;
  margin: var(--space-2xl) 0 var(--space-base);
}

.prose h2:first-child {
  margin-top: 0;
}

.prose h3 {
  font-size: 16px;
  margin: var(--space-lg) 0 var(--space-sm);
}

.prose p {
  font-size: 15px;
  margin-bottom: var(--space-base);
}

.prose ul {
  list-style: disc;
  padding-left: var(--space-xl);
  margin-bottom: var(--space-base);
}

.prose li {
  font-size: 15px;
  margin-bottom: var(--space-xs);
}

.prose a {
  color: var(--color-accent);
  text-decoration: underline;
}

.contact-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.contact-card {
  background-color: var(--color-bg-card);
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  padding: var(--space-lg);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

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

.contact-card a:not(.btn) {
  color: var(--color-accent);
  font-weight: 500;
  text-decoration: underline;
}

.contact-card__hint {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: var(--space-base);
}

/* === Foco (Acessibilidade) === */
a:focus-visible,
button:focus-visible,
input:focus-visible,
label:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* === Tablet === */
@media (max-width: 1024px) {
  .features__grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .footer__brand {
    grid-column: 1 / -1;
  }

  .step:not(:last-child)::after {
    width: calc(100% - 48px);
    left: calc(50% + 24px);
  }
}

/* === Mobile === */
@media (max-width: 768px) {
  .nav-toggle__label {
    display: flex;
  }

  .header__nav {
    position: fixed;
    top: 56px;
    left: 0;
    right: 0;
    background-color: var(--color-bg-card);
    flex-direction: column;
    padding: var(--space-base) var(--space-lg);
    gap: var(--space-base);
    border-bottom: 1px solid #e5e7eb;
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s, opacity 0.3s;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    z-index: 99;
  }

  .nav-toggle__input:checked ~ .header__nav {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .header__nav a {
    width: 100%;
    padding: var(--space-sm) 0;
  }

  .header__nav .nav-mobile-enter {
    display: inline-flex;
    width: 100%;
    margin-top: var(--space-sm);
    text-align: center;
    justify-content: center;
    color: #ffffff;
  }

  .header__actions .btn {
    display: none;
  }

  .hero {
    padding: 48px 0;
  }

  .hero__inner {
    flex-direction: column;
    text-align: center;
  }

  .hero__content p {
    margin-left: auto;
    margin-right: auto;
  }

  .hero__actions {
    justify-content: center;
  }

  .hero__image {
    width: 100%;
    min-height: 200px;
  }

  .how-it-works__shot {
    margin-top: var(--space-xl);
  }

  .contact-cards {
    grid-template-columns: 1fr;
  }

  .features {
    padding: 48px 0;
  }

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

  .how-it-works {
    padding: 48px 0;
  }

  .steps {
    flex-direction: column;
    align-items: center;
  }

  .step:not(:last-child)::after {
    display: none;
  }

  .cta {
    padding: 48px 0;
  }

  .footer__grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer__links ul,
  .footer__legal ul {
    align-items: center;
  }
}