/* ==========================================================================
   LANDING PAGE — 5 Alimentos que Você Pode Conservar por Anos sem Geladeira
   Sonia Michielli — style.css
   ==========================================================================
   Índice:
   1. Variáveis e configurações globais
   2. Reset e estilos base
   3. Tipografia
   4. Layout e containers
   5. Botões
   6. Cabeçalho
   7. Hero
   8. Benefícios
   9. Sobre a autora
   10. Formulário de captura
   11. Rodapé
   12. Animações (fade-in ao rolar)
   13. Acessibilidade e estados de foco
   ========================================================================== */


/* ==========================================================================
   1. VARIÁVEIS E CONFIGURAÇÕES GLOBAIS
   ========================================================================== */
:root {
  /* Paleta — verde oliva / marrom escuro / bege claro / branco */
  --color-olive: #6E7B4F;
  --color-olive-dark: #4F5A38;
  --color-olive-light: #EAEEDF;
  --color-brown: #3B2C20;
  --color-brown-soft: #7A6752;
  --color-beige: #F5EEE1;
  --color-beige-dark: #E9DFC9;
  --color-white: #FEFCF8;

  /* Cor de erro (tom terroso, coerente com a paleta) */
  --color-error: #B3453B;
  --color-error-bg: #F7E7E4;

  /* Tipografia */
  --font-heading: "Bitter", Georgia, "Times New Roman", serif;
  --font-body: "Karla", "Segoe UI", Arial, sans-serif;

  /* Espaçamentos */
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-5: 48px;
  --space-6: 64px;
  --space-7: 88px;

  /* Bordas */
  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 28px;
  --radius-full: 999px;

  /* Sombra única, bem suave — usada com moderação */
  --shadow-soft: 0 10px 26px rgba(59, 44, 32, 0.08);

  /* Transições */
  --transition-fast: 0.2s ease;
  --transition-base: 0.35s ease;

  --container-width: 1180px;
}


/* ==========================================================================
   2. RESET E ESTILOS BASE
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
}

* {
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--color-brown-soft);
  background-color: var(--color-white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
}

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input {
  font: inherit;
  color: var(--color-brown);
}

svg {
  display: block;
}


/* ==========================================================================
   3. TIPOGRAFIA
   ========================================================================== */
h1, h2, h3 {
  font-family: var(--font-heading);
  color: var(--color-brown);
  line-height: 1.18;
  font-weight: 700;
}

h1 {
  font-size: clamp(2.1rem, 4.4vw, 3.3rem);
  max-width: 16ch;
}

.section-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  text-align: center;
  margin-bottom: var(--space-4);
}

.about .section-title {
  text-align: left;
  margin-bottom: var(--space-2);
}

p {
  color: var(--color-brown-soft);
}


/* ==========================================================================
   4. LAYOUT E CONTAINERS
   ========================================================================== */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin-inline: auto;
  padding-inline: var(--space-3);
}

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


/* ==========================================================================
   5. BOTÕES
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  padding: 15px 30px;
  border-radius: var(--radius-full);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1rem;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast), opacity var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--color-olive);
  color: var(--color-white);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background-color: var(--color-olive-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-soft);
}

.btn-lg {
  padding: 18px 38px;
  font-size: 1.05rem;
}

.btn-sm {
  padding: 10px 20px;
  font-size: 0.88rem;
}

.btn-full {
  width: 100%;
}

.btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}


/* ==========================================================================
   6. CABEÇALHO
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: rgba(254, 252, 248, 0.9);
  backdrop-filter: blur(6px);
  transition: box-shadow var(--transition-base), background-color var(--transition-base);
}

.site-header.is-scrolled {
  background-color: var(--color-white);
  box-shadow: 0 2px 18px rgba(59, 44, 32, 0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  flex-wrap: wrap;
  padding-block: var(--space-2);
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--color-brown);
}

.logo svg {
  width: 30px;
  height: 30px;
}


/* ==========================================================================
   7. HERO
   ========================================================================== */
.hero {
  padding-top: var(--space-6);
  padding-bottom: var(--space-7);
  background-color: var(--color-white);
}

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

.eyebrow {
  display: inline-flex;
  align-items: center;
  background-color: var(--color-olive-light);
  color: var(--color-olive-dark);
  font-weight: 700;
  font-size: 0.75rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  padding: 7px 16px;
  border-radius: var(--radius-full);
  border: 1.5px dashed var(--color-olive);
  margin-bottom: var(--space-2);
}

.hero-subtitle {
  font-size: 1.12rem;
  margin-block: var(--space-3);
  max-width: 46ch;
}

.hero-microcopy {
  margin-top: var(--space-2);
  font-size: 0.88rem;
  color: var(--color-brown-soft);
}

.hero-tags-wrap {
  margin-top: var(--space-5);
}

.hero-tags-label {
  display: block;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-brown);
  margin-bottom: var(--space-1);
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-tags li {
  background-color: var(--color-beige);
  border: 1.5px solid var(--color-beige-dark);
  color: var(--color-brown-soft);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: var(--radius-full);
}

/* Cartão de profundidade sem sombra: forma sólida deslocada atrás da imagem */
.hero-image {
  position: relative;
  justify-self: center;
}

.hero-image::before {
  content: "";
  position: absolute;
  top: 18px;
  left: 18px;
  right: -18px;
  bottom: -18px;
  background-color: var(--color-olive-light);
  border-radius: var(--radius-lg);
  z-index: 0;
}

.ebook-cover {
  position: relative;
  z-index: 1;
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 340px;
}

@media (min-width: 900px) {
  .hero-inner {
    grid-template-columns: 1.05fr 0.95fr;
  }
  .hero-image {
    justify-self: end;
  }
}


/* ==========================================================================
   8. BENEFÍCIOS
   ========================================================================== */
.benefits {
  background-color: var(--color-beige);
}

.benefits-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

.benefit-card {
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.benefit-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-soft);
}

/* Ícone em formato de "tampa de pote" — anel duplo, elemento de assinatura da página */
.benefit-icon {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background-color: var(--color-olive);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-2);
  box-shadow: 0 0 0 4px var(--color-white), 0 0 0 6px var(--color-beige-dark);
}

.benefit-icon svg {
  width: 24px;
  height: 24px;
}

.benefit-card h3 {
  font-size: 1.12rem;
  margin-bottom: 8px;
}

.benefit-card p {
  font-size: 0.95rem;
}

@media (min-width: 600px) {
  .benefits-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .benefits-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}


/* ==========================================================================
   9. SOBRE A AUTORA
   ========================================================================== */
.about {
  background-color: var(--color-white);
}

.about-inner {
  display: grid;
  gap: var(--space-4);
  align-items: center;
  text-align: center;
  grid-template-columns: 1fr;
}

.about-photo {
  position: relative;
  width: fit-content;
  margin-inline: auto;
}

.about-photo::before {
  content: "";
  position: absolute;
  top: 14px;
  left: 14px;
  right: -14px;
  bottom: -14px;
  background-color: var(--color-beige);
  border-radius: 50%;
  z-index: 0;
}

.about-photo img {
  position: relative;
  z-index: 1;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  object-fit: cover;
}

.about-content p {
  max-width: 60ch;
  margin-inline: auto;
}

.about-social-link {
  display: inline-block;
  margin-top: var(--space-2);
  color: var(--color-olive-dark);
  font-weight: 700;
  border-bottom: 1.5px solid var(--color-olive);
  transition: opacity var(--transition-fast);
}

.about-social-link:hover {
  opacity: 0.7;
}

@media (min-width: 800px) {
  .about-inner {
    grid-template-columns: auto 1fr;
    text-align: left;
  }
  .about-photo {
    margin-inline: 0;
  }
  .about-content p {
    margin-inline: 0;
  }
}


/* ==========================================================================
   10. FORMULÁRIO DE CAPTURA
   ========================================================================== */
.lead-form-section {
  background-color: var(--color-brown);
}

.lead-form-section .section-title {
  color: var(--color-white);
}

.form-intro {
  text-align: center;
  max-width: 620px;
  margin-inline: auto;
  margin-bottom: var(--space-4);
}

.form-intro p {
  color: var(--color-beige);
}

.lead-form {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  max-width: 540px;
  margin-inline: auto;
  display: grid;
  gap: var(--space-3);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-align: left;
}

.form-group label {
  font-weight: 700;
  font-size: 0.88rem;
  color: var(--color-brown);
}

.input-wrapper {
  position: relative;
}

.input-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  color: var(--color-olive);
  pointer-events: none;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="tel"] {
  width: 100%;
  padding: 14px 16px 14px 42px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--color-beige-dark);
  background-color: var(--color-beige);
  transition: border-color var(--transition-fast);
}

.form-group input::placeholder {
  color: var(--color-brown-soft);
  opacity: 0.7;
}

.form-group input:focus-visible {
  outline: none;
  border-color: var(--color-olive);
}

.form-group input.has-error {
  border-color: var(--color-error);
}

.form-error {
  display: block;
  color: var(--color-error);
  font-size: 0.82rem;
  min-height: 1.1em;
}

.form-checkbox-group {
  flex-direction: row;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 10px;
}

.form-checkbox-group input {
  margin-top: 3px;
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  accent-color: var(--color-olive);
}

.form-checkbox-group label {
  font-weight: 400;
  font-size: 0.88rem;
  color: var(--color-brown-soft);
}

.form-checkbox-group .form-error {
  flex-basis: 100%;
}

.form-privacy-note {
  text-align: center;
  font-size: 0.82rem;
  color: var(--color-brown-soft);
}

.form-banner {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  text-align: center;
}

.form-banner--error {
  background-color: var(--color-error-bg);
  color: var(--color-error);
}

.form-success {
  max-width: 540px;
  margin-inline: auto;
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-5) var(--space-4);
  text-align: center;
}

.form-success-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background-color: var(--color-olive);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-inline: auto;
  margin-bottom: var(--space-2);
  box-shadow: 0 0 0 4px var(--color-white), 0 0 0 6px var(--color-beige-dark);
}

.form-success-icon svg {
  width: 26px;
  height: 26px;
}

.form-success h3 {
  margin-bottom: var(--space-1);
}

.form-success p {
  max-width: 42ch;
  margin-inline: auto;
}


/* ==========================================================================
   11. RODAPÉ
   ========================================================================== */
.site-footer {
  background-color: #2C2116;
  padding-block: var(--space-5);
}

.footer-inner {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
}

.footer-brand {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-white);
}

.footer-tagline {
  color: rgba(254, 252, 248, 0.75);
  font-size: 0.92rem;
  max-width: 46ch;
}

.footer-social {
  display: flex;
  gap: var(--space-2);
}

.footer-social a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1.5px solid rgba(254, 252, 248, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.footer-social a:hover {
  background-color: var(--color-olive);
  border-color: var(--color-olive);
}

.footer-social svg {
  width: 18px;
  height: 18px;
}

.footer-copy {
  font-size: 0.82rem;
  color: rgba(254, 252, 248, 0.6);
}


/* ==========================================================================
   12. ANIMAÇÕES (FADE-IN AO ROLAR)
   ========================================================================== */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

@media (prefers-reduced-motion: reduce) {
  .fade-in {
    opacity: 1;
    transform: none;
    transition: none;
  }
  html {
    scroll-behavior: auto;
  }
}


/* ==========================================================================
   13. ACESSIBILIDADE E ESTADOS DE FOCO
   ========================================================================== */
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--color-olive);
  outline-offset: 3px;
}