/* ============================================
   TerraSábia — variáveis e reset
   ============================================ */

:root {
  --musgo: #2f4434;
  --musgo-escuro: #1f2e23;
  --musgo-claro: #3d5644;
  --creme: #f4ede0;
  --creme-escuro: #e8dfce;
  --ambar: #c8893a;
  --ambar-claro: #e0a555;
  --texto-secundario: #7a7268;
  --texto-terciario: #a09789;
  --branco: #ffffff;

  --fonte-titulo: 'Space Grotesk', sans-serif;
  --fonte-corpo: 'Inter', sans-serif;

  --sombra-suave: 0 4px 24px rgba(31, 46, 35, 0.08);
  --sombra-media: 0 12px 40px rgba(31, 46, 35, 0.14);
  --raio: 12px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--fonte-corpo);
  color: var(--musgo-escuro);
  background: var(--creme);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

h1, h2, h3, h4 {
  font-family: var(--fonte-titulo);
  color: var(--musgo);
  line-height: 1.2;
}

button {
  font-family: var(--fonte-corpo);
  cursor: pointer;
  border: none;
  background: none;
}

.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

.container--narrow {
  max-width: 760px;
}

section {
  padding: 96px 0;
}

.section-title {
  font-size: 2rem;
  text-align: center;
  margin-bottom: 12px;
}

.section-subtitle {
  text-align: center;
  color: var(--texto-secundario);
  max-width: 560px;
  margin: 0 auto 56px;
}

/* ============================================
   Fade-in ao entrar em viewport
   ============================================ */

.fade-in {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   Botões
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
  font-size: 0.95rem;
  padding: 12px 24px;
  border-radius: var(--raio);
  transition: background 0.2s ease, color 0.2s ease, transform 0.15s ease;
}

.btn i {
  width: 18px;
  height: 18px;
}

.btn--primary {
  background: var(--musgo);
  color: var(--creme);
}

.btn--primary:hover {
  background: var(--ambar);
  color: var(--musgo-escuro);
}

.btn--ghost {
  background: transparent;
  color: var(--musgo);
  border: 1px solid var(--musgo-claro);
}

.btn--ghost:hover {
  background: var(--creme-escuro);
}

.btn--large {
  padding: 16px 32px;
  font-size: 1.05rem;
}

.btn--nav {
  padding: 10px 20px;
  font-size: 0.9rem;
}

/* ============================================
   Nota de instalação (aviso do Android)
   ============================================ */

.install-note {
  display: inline-flex;
  align-items: flex-start;
  gap: 10px;
  max-width: 480px;
  margin-top: 20px;
  padding: 12px 16px;
  background: rgba(200, 137, 58, 0.08);
  border-left: 3px solid var(--ambar);
  border-radius: 6px;
  font-size: 0.85rem;
  color: var(--texto-secundario);
  line-height: 1.5;
  text-align: left;
}

.install-note i {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  color: var(--ambar);
  margin-top: 2px;
}

.install-note--centered {
  margin-left: auto;
  margin-right: auto;
}

/* ============================================
   Navbar
   ============================================ */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: transparent;
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.navbar.is-scrolled {
  background: rgba(244, 237, 224, 0.92);
  backdrop-filter: blur(8px);
  box-shadow: var(--sombra-suave);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.navbar__logo {
  height: 40px;
  width: auto;
}

.navbar__nav {
  display: flex;
  align-items: center;
  gap: 32px;
  font-size: 0.95rem;
  font-weight: 500;
}

.navbar__nav a {
  color: var(--musgo);
  transition: color 0.2s ease;
}

.navbar__nav a:hover {
  color: var(--ambar);
}

.navbar__nav a.btn--primary {
  color: var(--creme);
}

.navbar__nav a.btn--primary:hover {
  color: var(--musgo-escuro);
}

.navbar__toggle {
  display: none;
  color: var(--musgo);
}

.navbar__toggle i {
  width: 26px;
  height: 26px;
}

/* ============================================
   Hero
   ============================================ */

.hero {
  background: var(--creme);
  padding: 160px 0 96px;
}

.hero__inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 64px;
  align-items: center;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 24px;
}

.hero__subtitle {
  font-size: 1.15rem;
  color: var(--texto-secundario);
  max-width: 480px;
  margin-bottom: 36px;
}

.hero__ctas {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--texto-secundario);
  background: var(--creme-escuro);
  padding: 10px 18px;
  border-radius: 999px;
  margin-top: 24px;
}

.hero__badge i {
  width: 16px;
  height: 16px;
  color: var(--ambar);
}

.hero__mockup {
  display: flex;
  justify-content: center;
}

.phone-frame {
  width: 280px;
  aspect-ratio: 9 / 19.5;
  border-radius: 40px;
  border: 6px solid var(--musgo);
  box-shadow: var(--sombra-media);
  overflow: hidden;
  background: var(--creme-escuro);
}

.phone-frame__screenshot {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.phone-frame--placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--creme-escuro);
}

.phone-frame--placeholder::after {
  content: 'Screenshot em breve';
  font-size: 0.8rem;
  color: var(--texto-terciario);
  text-align: center;
  padding: 0 20px;
}

/* ============================================
   O problema
   ============================================ */

.problema {
  background: var(--branco);
  text-align: center;
}

.problema h2 {
  font-size: 2rem;
  margin-bottom: 24px;
}

.problema p {
  font-size: 1.1rem;
  color: var(--texto-secundario);
}

/* ============================================
   Como funciona
   ============================================ */

.como-funciona {
  background: var(--creme);
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
}

.step__number {
  display: block;
  font-family: var(--fonte-titulo);
  font-weight: 700;
  font-size: 2.5rem;
  color: var(--ambar);
  margin-bottom: 12px;
}

.step h3 {
  font-size: 1.25rem;
  margin-bottom: 10px;
}

.step p {
  color: var(--texto-secundario);
}

/* ============================================
   Culturas
   ============================================ */

.culturas {
  background: var(--branco);
}

.culturas__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.cultura-card {
  background: var(--creme);
  border: 1px solid var(--creme-escuro);
  border-radius: var(--raio);
  padding: 32px 24px;
  text-align: center;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.cultura-card:hover {
  border-color: var(--ambar);
  transform: translateY(-4px);
}

.cultura-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: var(--musgo);
  color: var(--creme);
}

.cultura-card__icon i {
  width: 26px;
  height: 26px;
}

.cultura-card h3 {
  font-size: 1.15rem;
  margin-bottom: 6px;
}

.cultura-card p {
  color: var(--texto-secundario);
  font-size: 0.9rem;
}

/* ============================================
   Features (PDF / Aprenda) - Responsivo
   ============================================ */

.feature {
  background: var(--creme);
  padding: 60px 0;
}

.feature--reverse {
  background: var(--branco);
}

.feature__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: center;
}

.feature__image {
  display: flex;
  justify-content: center;
  width: 100%;
}

.feature__text {
  text-align: left;
}

.feature__text h2 {
  font-size: 1.8rem;
  margin-bottom: 16px;
  line-height: 1.3;
  color: var(--musgo);
}

.feature__text p {
  color: var(--texto-secundario);
  font-size: 1.05rem;
  line-height: 1.6;
}

.tilted-shot {
  border-radius: 40px;
  border: 6px solid var(--musgo);
  box-shadow: var(--sombra-media);
  overflow: hidden;
  background: var(--creme-escuro);

  width: 100%;
  max-width: 280px;
  aspect-ratio: 9 / 19.5;
  margin: 0 auto;
}

.tilted-shot img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #ffffff;
}

@media (min-width: 768px) {
  .feature__inner {
    grid-template-columns: 1fr 1fr;
    gap: 64px;
  }

  .feature--reverse .feature__image {
    order: -1;
  }

  .feature__text h2 {
    font-size: 2.2rem;
  }
}

/* ============================================
   Base agronômica
   ============================================ */

.base-agronomica {
  background: var(--musgo-escuro);
  color: var(--creme);
  text-align: center;
}

.base-agronomica h2 {
  color: var(--creme);
  font-size: 2.1rem;
  margin-bottom: 24px;
}

.base-agronomica p {
  color: var(--creme-escuro);
  font-size: 1.05rem;
  margin-bottom: 40px;
}

.formula-box {
  text-align: left;
  background: rgba(244, 237, 224, 0.06);
  border-left: 3px solid var(--ambar);
  border-radius: 6px;
  padding: 28px 32px;
  max-width: 480px;
  margin: 0 auto;
}

.formula-box__label {
  display: block;
  font-size: 0.85rem;
  color: var(--texto-terciario);
  margin-bottom: 12px;
}

.formula-box__formula {
  font-family: var(--fonte-titulo);
  font-size: 1.4rem;
  color: var(--ambar-claro);
  margin-bottom: 12px;
}

.formula-box__source {
  font-size: 0.85rem;
  color: var(--texto-terciario);
}

/* ============================================
   CTA final
   ============================================ */

.cta-final {
  background: var(--creme);
  text-align: center;
}

.cta-final h2 {
  font-size: 2.2rem;
  margin-bottom: 32px;
}

.cta-final__note {
  margin-top: 20px;
  color: var(--texto-secundario);
  font-size: 0.9rem;
}

/* ============================================
   Footer
   ============================================ */

.footer {
  background: var(--musgo-escuro);
  padding: 18px 0;
  text-align: center;
}

.footer p {
  font-family: var(--fonte-corpo);
  font-size: 13px;
  color: rgba(244, 237, 224, 0.7);
}

.footer a {
  color: var(--ambar-claro);
  text-decoration: none;
  transition: text-decoration-color 0.2s ease;
  text-decoration: underline;
  text-decoration-color: transparent;
}

.footer a:hover {
  text-decoration-color: var(--ambar-claro);
}

/* ============================================
   Responsive
   ============================================ */

@media (max-width: 1024px) {
  .hero__inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero__subtitle {
    margin-left: auto;
    margin-right: auto;
  }

  .hero__ctas {
    justify-content: center;
  }

  .hero .install-note {
    margin-left: auto;
    margin-right: auto;
  }

  .hero__mockup {
    margin-top: 48px;
  }

  .steps {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .culturas__grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .feature--reverse .feature__image {
    order: 0;
  }

  .feature__text p {
    max-width: 520px;
    margin: 0 auto;
  }
}

@media (max-width: 640px) {
  section {
    padding: 64px 0;
  }

  .hero {
    padding: 128px 0 64px;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .navbar__nav {
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    background: var(--creme);
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    padding: 16px 24px 24px;
    box-shadow: var(--sombra-suave);
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
  }

  .navbar__nav a {
    padding: 12px 0;
    width: 100%;
  }

  .navbar__nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .navbar__nav .btn--nav {
    margin-top: 8px;
  }

  .navbar__toggle {
    display: block;
  }

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