/* Importar Design Tokens */
@import url('./design-system/tokens.css');

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--foreground);
  background-color: var(--background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   Tipografia
   ============================================ */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--foreground);
  margin-bottom: var(--spacing-4);
}

h1 {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-extrabold);
}

h2 {
  font-size: var(--font-size-3xl);
}

h3 {
  font-size: var(--font-size-2xl);
}

h4 {
  font-size: var(--font-size-xl);
}

h5 {
  font-size: var(--font-size-lg);
}

h6 {
  font-size: var(--font-size-base);
}

p {
  margin-bottom: var(--spacing-4);
  color: var(--foreground-muted);
}

a {
  color: var(--primary-500);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-600);
}

/* ============================================
   Container
   ============================================ */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-4);
}

/* ============================================
   Header/Navegação
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: var(--card-background);
  border-bottom: 1px solid var(--border);
  z-index: var(--z-fixed);
  transition: box-shadow var(--transition-base);
}

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

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-4) var(--spacing-4);
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
}

.nav__logo h2 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--primary-500);
  margin: 0;
}

.nav__menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-6);
  align-items: center;
  margin-left: auto;
}

.nav__link {
  color: var(--foreground);
  font-weight: var(--font-weight-medium);
  transition: color var(--transition-fast);
  display: flex;
  align-items: center;
  height: 100%;
}

.nav__link:hover,
.nav__link.active {
  color: var(--primary-500);
}

/* Navigation Menu integration in header */
.nav .navigation-menu {
  flex: 1;
  display: flex;
  justify-content: flex-end;
  margin: 0 var(--spacing-4);
  width: auto;
  max-width: none;
  align-items: center;
}

.nav .navigation-menu__list {
  gap: var(--spacing-2);
}

/* Ensure navigation menu links work with active state */
.nav .navigation-menu__link.active {
  background-color: var(--primary-50);
  color: var(--primary-600);
}

/* Variant: No background on active for variant1 */
.nav .navigation-menu--no-bg-active .navigation-menu__link.active {
  background-color: transparent;
  color: var(--primary-600);
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
  padding: var(--spacing-2);
}

.nav__toggle span {
  width: 24px;
  height: 2px;
  background-color: var(--foreground);
  transition: all var(--transition-base);
}

/* Theme Toggle Button */
.nav__theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background-color: var(--card-background);
  color: var(--foreground);
  cursor: pointer;
  transition: all var(--transition-base);
  margin-left: var(--spacing-4);
  margin-right: var(--spacing-3);
  padding: 0;
  font-size: var(--font-size-lg);
  flex-shrink: 0;
}

.nav__theme-toggle:hover {
  background-color: var(--background-alt);
  border-color: var(--primary-300);
  transform: scale(1.05);
}

.nav__theme-toggle:active {
  transform: scale(0.95);
}

.nav__theme-toggle svg {
  width: 20px;
  height: 20px;
  stroke: currentColor;
  fill: none;
}

/* Hide sun icon in light mode, moon icon in dark mode */
.nav__theme-toggle .theme-icon-sun {
  display: none;
}

html.dark .nav__theme-toggle .theme-icon-sun {
  display: block;
}

html.dark .nav__theme-toggle .theme-icon-moon {
  display: none;
}

@media (max-width: 768px) {
  .nav__theme-toggle {
    margin-left: auto;
    margin-right: var(--spacing-2);
    width: 36px;
    height: 36px;
    order: 1;
  }
  
  .nav__toggle {
    order: 2;
  }
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
  padding: calc(80px + var(--spacing-16)) var(--spacing-4) var(--spacing-16);
  background: linear-gradient(135deg, var(--primary-50) 0%, var(--background) 100%);
}

.hero__container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-12);
  align-items: center;
}

.hero__title {
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-extrabold);
  line-height: var(--line-height-tight);
  margin-bottom: var(--spacing-6);
  color: var(--foreground);
}

.hero__subtitle {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  color: var(--foreground-muted);
  margin-bottom: var(--spacing-8);
}

.hero__cta {
  display: flex;
  gap: var(--spacing-4);
}

/* ============================================
   Botões
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-3) var(--spacing-6);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-lg);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
}

.btn--primary {
  background-color: var(--primary-500);
  color: white;
}

.btn--primary:hover {
  background-color: var(--primary-600);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn--secondary {
  background-color: var(--secondary-500);
  color: white;
}

.btn--secondary:hover {
  background-color: var(--secondary-600);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* ============================================
   Sections
   ============================================ */
.section {
  padding: var(--spacing-20) var(--spacing-4);
}

.section__header {
  text-align: center;
  margin-bottom: var(--spacing-12);
}

.section__title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-extrabold);
  margin-bottom: var(--spacing-4);
}

.section__subtitle {
  font-size: var(--font-size-lg);
  color: var(--foreground-muted);
  max-width: 600px;
  margin: 0 auto;
}

/* ============================================
   Features Grid
   ============================================ */
.features__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-6);
}

/* Legacy feature card styles (for index.html) */
.feature__card {
  background-color: var(--card-background);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-6);
  transition: all var(--transition-base);
}

.feature__card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-200);
}

.feature__icon {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-4);
}

.feature__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-3);
  color: var(--foreground);
}

.feature__description {
  color: var(--foreground-muted);
  line-height: var(--line-height-relaxed);
}

.feature__card--large {
  grid-column: span 2;
}

/* Card styles for variant1.html - ensure cards work well in features grid */
.features__grid .card {
  height: 100%;
  display: flex;
  flex-direction: column;
}

.features__grid .card--lg {
  grid-column: span 2;
}

/* Badge spacing in card headers */
.card__header .badge {
  margin-bottom: var(--spacing-2);
  align-self: flex-start;
}

/* ============================================
   Footer
   ============================================ */
.footer {
  background-color: var(--neutral-900);
  color: var(--neutral-100);
  padding: var(--spacing-12) var(--spacing-4);
  margin-top: var(--spacing-20);
}

.footer__content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-8);
  margin-bottom: var(--spacing-8);
}

.footer__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-4);
  color: white;
}

.footer__subtitle {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-3);
  color: white;
}

.footer__description,
.footer__text {
  color: var(--neutral-300);
  margin-bottom: var(--spacing-2);
}

.footer__social {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
}

.footer__link {
  color: var(--neutral-300);
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--primary-400);
}

.footer__bottom {
  text-align: center;
  padding-top: var(--spacing-8);
  border-top: 1px solid var(--neutral-800);
  color: var(--neutral-400);
}

/* ============================================
   Responsividade
   ============================================ */
@media (max-width: 768px) {
  .nav__menu,
  .navigation-menu__list {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background-color: var(--card-background);
    flex-direction: column;
    padding: var(--spacing-8);
    transition: left var(--transition-base);
    box-shadow: var(--shadow-lg);
    gap: var(--spacing-4);
  }

  .nav__menu.show,
  .navigation-menu__list.show {
    left: 0;
  }

  .nav .navigation-menu {
    margin: 0;
  }

  .nav__toggle {
    display: flex;
  }

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

  .hero__title {
    font-size: var(--font-size-3xl);
  }

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

  .feature__card--large,
  .features__grid .card--lg {
    grid-column: span 1;
  }

  .section__title {
    font-size: var(--font-size-3xl);
  }
}