/* ==========================================================================
   AMS Rotas & Trilhas - Landing Page
   Paleta: logo AMS (verde, laranja, teal, tons terrosos)
   ========================================================================== */

:root {
  /* Cores da identidade AMS */
  --green-light: #a7cc33;
  --green-dark: #2e5c1b;
  --orange: #e67e22;
  --orange-soft: #f39c12;
  --teal: #008080;
  --teal-soft: #1a9a9a;
  --yellow-accent: #f1c40f;
  /* Neutros e terreno */
  --gray-100: #f5f5f5;
  --gray-200: #e8e8e8;
  --gray-300: #d3d3d3;
  --gray-500: #6b7280;
  --gray-700: #4a4a4a;
  --gray-900: #1a1a1a;
  --sand: #e8dcc4;
  --brown: #6b5344;
  --white: #ffffff;
  --black: #0d0d0d;
  /* Tipografia */
  --font: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  /* Espaçamento e layout */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  --container: min(90vw, 1100px);
  --header-height: 88px;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 4px 20px rgba(46, 92, 27, 0.08);
  --shadow-lg: 0 12px 40px rgba(46, 92, 27, 0.12);
  --transition: 0.2s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--gray-700);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--teal);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--teal-soft);
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--green-dark);
  outline-offset: 2px;
}

ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

/* ==========================================================================
   Header
   ========================================================================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gray-200);
  transition: box-shadow var(--transition);
}

.header.scrolled {
  box-shadow: var(--shadow);
}

.header__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-md);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
}

.logo__img {
  height: 64px;
  width: auto;
  object-fit: contain;
}

@media (min-width: 769px) {
  .logo__img {
    height: 80px;
  }
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  padding: var(--space-xs);
  cursor: pointer;
  color: var(--gray-700);
}

.nav-toggle .material-icons {
  font-size: 32px;
}

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

.nav__link {
  font-weight: 600;
  font-size: 1.0625rem;
  color: var(--gray-700);
}

.nav__link:hover {
  color: var(--green-dark);
}

.nav__link--cta {
  font-weight: 700;
  color: var(--white);
  background: var(--green-dark);
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius);
}

.nav__link--cta:hover {
  background: var(--green-light);
  color: var(--black);
}

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

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(var(--header-height) + var(--space-2xl)) var(--space-md) var(--space-2xl);
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--green-dark) 0%, var(--green-light) 40%, var(--orange-soft) 100%);
  opacity: 0.92;
}

.hero__bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M30 0L60 30L30 60L0 30z' fill='%23fff' fill-opacity='0.03' fill-rule='evenodd'/%3E%3C/svg%3E");
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 640px;
  text-align: center;
}

.hero__tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 1rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.95);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-md);
}

.hero__title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  color: var(--white);
  margin: 0 0 var(--space-md);
  letter-spacing: -0.02em;
}

.hero__subtitle {
  font-size: 1.25rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.95);
  margin: 0 0 var(--space-xl);
  max-width: 540px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.5;
}

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

.hero__scroll {
  position: absolute;
  bottom: var(--space-lg);
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255, 255, 255, 0.7);
  animation: bounce 2s infinite;
}

.hero__scroll .material-icons {
  font-size: 40px;
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  font-family: var(--font);
  font-size: 1.0625rem;
  font-weight: 700;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), transform var(--transition);
}

.btn .material-icons {
  font-size: 24px;
}

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

.btn--primary:hover {
  background: var(--gray-100);
  transform: translateY(-1px);
}

.btn--secondary {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255, 255, 255, 0.8);
}

.btn--secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: var(--white);
}

.btn--large {
  padding: var(--space-md) var(--space-xl);
  font-size: 1.25rem;
  font-weight: 800;
}

.btn--large .material-icons {
  font-size: 28px;
}

/* ==========================================================================
   Sections
   ========================================================================== */

.section {
  padding: var(--space-3xl) var(--space-md);
}

.section--light {
  background: var(--gray-100);
}

.section--accent {
  background: linear-gradient(180deg, var(--green-dark) 0%, var(--green-light) 100%);
  color: var(--white);
}

.section--dark {
  background: var(--gray-900);
  color: var(--white);
}

.section--cta {
  background: linear-gradient(135deg, var(--teal) 0%, var(--teal-soft) 100%);
  color: var(--white);
  padding: var(--space-3xl) var(--space-md);
}

.container {
  max-width: var(--container);
  margin: 0 auto;
}

.section__header {
  text-align: center;
  max-width: 560px;
  margin: 0 auto var(--space-2xl);
}

.section__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  background: var(--green-dark);
  color: var(--white);
  border-radius: 50%;
  margin-bottom: var(--space-md);
}

.section__icon .material-icons {
  font-size: 36px;
}

.section__icon--light {
  background: rgba(255, 255, 255, 0.2);
}

.section__title {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 800;
  color: var(--gray-900);
  margin: 0 0 var(--space-sm);
  letter-spacing: -0.02em;
}

.section__title--light {
  color: var(--white);
}

.section__lead {
  font-size: 1.1875rem;
  font-weight: 500;
  color: var(--gray-500);
  margin: 0;
}

.section__lead--light {
  color: rgba(255, 255, 255, 0.9);
}

.section__note {
  text-align: center;
  font-size: 0.9375rem;
  color: var(--gray-500);
  margin: var(--space-lg) 0 0;
}

.section__note--light {
  color: rgba(255, 255, 255, 0.85);
}

/* ==========================================================================
   Cards
   ========================================================================== */

.cards {
  display: grid;
  gap: var(--space-lg);
}

.cards--two {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.card {
  background: var(--white);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  transition: box-shadow var(--transition), transform var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.card__icon {
  font-size: 56px;
  color: var(--green-dark);
  margin-bottom: var(--space-sm);
}

.card__title {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--gray-900);
  margin: 0 0 var(--space-xs);
}

.card__text {
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--gray-500);
}

/* ==========================================================================
   Modalities
   ========================================================================== */

.modalities {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-md);
  margin: 0 auto;
  max-width: 800px;
}

.modality {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-lg);
  background: rgba(255, 255, 255, 0.15);
  border-radius: var(--radius);
  backdrop-filter: blur(8px);
  transition: background var(--transition);
}

.modality:hover {
  background: rgba(255, 255, 255, 0.25);
}

.modality__icon {
  font-size: 64px;
  color: var(--white);
}

.modality__label {
  font-weight: 700;
  font-size: 1.0625rem;
  text-align: center;
}

/* ==========================================================================
   Benefits
   ========================================================================== */

.benefits {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-lg);
}

.benefit {
  background: var(--white);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  transition: box-shadow var(--transition);
}

.benefit:hover {
  box-shadow: var(--shadow-lg);
}

.benefit__icon {
  font-size: 56px;
  color: var(--teal);
  margin-bottom: var(--space-sm);
}

.benefit__title {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--gray-900);
  margin: 0 0 var(--space-xs);
}

.benefit__text {
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--gray-500);
}

/* ==========================================================================
   Partnership flow
   ========================================================================== */

.partnership-flow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  margin: var(--space-xl) 0;
}

.partnership-flow__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-lg);
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  min-width: 200px;
}

.partnership-flow__item .material-icons {
  font-size: 52px;
  color: var(--yellow-accent);
}

.partnership-flow__item p {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
  text-align: center;
}

.partnership-flow__arrow {
  font-size: 36px;
  color: rgba(255, 255, 255, 0.7);
}

@media (max-width: 520px) {
  .partnership-flow__arrow {
    transform: rotate(90deg);
    width: 100%;
    text-align: center;
  }
}

/* ==========================================================================
   About
   ========================================================================== */

.about {
  text-align: center;
  max-width: 480px;
  margin: 0 auto;
}

.about__name {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--green-dark);
  margin: 0 0 var(--space-xs);
}

.about__bio {
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--gray-500);
}

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

.cta {
  text-align: center;
}

.cta__title {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 800;
  margin: 0 0 var(--space-sm);
  color: var(--white);
  letter-spacing: -0.02em;
}

.cta__text {
  margin: 0 0 var(--space-xl);
  color: rgba(255, 255, 255, 0.95);
  font-size: 1.1875rem;
  font-weight: 500;
}

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

.cta .btn--primary:hover {
  background: var(--gray-100);
}

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

.footer {
  background: var(--gray-900);
  color: rgba(255, 255, 255, 0.8);
  padding: var(--space-xl) var(--space-md);
}

.footer__inner {
  max-width: var(--container);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  text-align: center;
}

.footer__logo {
  height: 48px;
  width: auto;
  opacity: 0.9;
}

.footer__copy {
  margin: 0;
  font-size: 0.9375rem;
  font-weight: 500;
}

/* ==========================================================================
   Responsive - Mobile
   ========================================================================== */

@media (max-width: 768px) {
  .logo__img {
    height: 56px;
  }

  .nav-toggle {
    display: block;
  }

  .nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    padding: var(--space-md);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition), opacity var(--transition), visibility var(--transition);
  }

  .nav.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav__list {
    flex-direction: column;
    gap: 0;
  }

  .nav__list li {
    width: 100%;
    border-bottom: 1px solid var(--gray-200);
  }

  .nav__link {
    display: block;
    padding: var(--space-md);
  }

  .nav__link--cta {
    margin: var(--space-sm) 0 0;
    text-align: center;
  }

  .hero__actions {
    flex-direction: column;
  }

  .hero__actions .btn {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  :root {
    --space-2xl: 3rem;
    --space-3xl: 4rem;
  }
}