/* ============================================================
   WHATSLINK - INDEX.CSS
   Página Inicial / Landing Page
   ============================================================ */

/* ============ APP CONTAINER ============ */
#app {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 20px 40px;
  overflow-x: hidden;
  width: 100%;
  box-sizing: border-box;
}

/* ============ HEADER ============ */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 0;
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: rgba(248,250,252,.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.logo {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
  letter-spacing: -.03em;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--primary);
  color: white;
  border-radius: 10px;
  display: grid;
  place-items: center;
}

.badge {
  font-size: 10px;
  background: white;
  border: 1px solid var(--border);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  color: var(--muted);
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 6px;
  letter-spacing: .06em;
}

.badge .dot {
  width: 6px;
  height: 6px;
  background: #22c55e;
  border-radius: 50%;
  animation: pulseDot 2s infinite;
}

.nav {
  display: flex;
  gap: 20px;
  align-items: center;
}

.nav a {
  text-decoration: none;
  color: var(--muted);
  font-weight: 500;
  font-size: 14px;
  transition: color .2s ease;
}

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

.nav-cta {
  background: var(--text);
  color: white !important;
  padding: 10px 18px;
  border-radius: var(--radius-full);
  font-weight: 600 !important;
}

.nav-edit {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  background: white;
}

/* ============ MENU MOBILE ============ */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
  -webkit-tap-highlight-color: transparent;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  transition: all .3s ease;
  border-radius: 2px;
}

.menu-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ============ HERO ============ */
.hero {
  text-align: center;
  margin: 72px auto 56px;
  max-width: 760px;
  animation: fadeInUp .7s ease;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: white;
  border: 1px solid var(--border);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(36px, 5.5vw, 56px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -.04em;
}

.hero h1 span {
  background: linear-gradient(135deg, var(--whatsapp), #128C7E);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  color: var(--muted);
  font-size: 18px;
  margin: 20px 0 28px;
}

.hero-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.hero-note {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  color: var(--muted);
  font-weight: 500;
}

/* ============ TEMAS ============ */
.themes-section {
  margin: 80px 0;
}

.section-head {
  text-align: center;
  margin-bottom: 36px;
}

.themes-section h2 {
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 800;
}

.section-subtitle {
  color: var(--muted);
  margin-top: 8px;
  font-size: 16px;
}

/* ============ CARROSSEL ============ */
.carousel {
  position: relative;
  max-width: 1000px;
  margin: 0 auto;
  overflow: hidden;
}

.carousel-viewport {
  overflow: hidden;
  border-radius: var(--radius-lg);
  padding: 8px 0;
}

.carousel-track {
  display: flex;
  gap: 18px;
  transition: transform .45s cubic-bezier(.32,.72,0,1);
  will-change: transform;
  flex-wrap: nowrap;
}

.theme-card {
  min-width: 220px;
  max-width: 220px;
  background: white;
  border-radius: 20px;
  padding: 14px;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all .25s ease;
  box-shadow: var(--shadow-sm);
  position: relative;
  flex-shrink: 0;
  -webkit-tap-highlight-color: transparent;
}

.theme-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--border);
}

.theme-card.active {
  border-color: var(--whatsapp);
  box-shadow: 0 0 0 4px rgba(37,211,102,.15), var(--shadow-md);
}

.theme-preview {
  height: 220px;
  border-radius: 16px;
  position: relative;
  overflow: hidden;
  padding: 12px;
  display: flex;
  flex-direction: column;
}

.preview-banner {
  height: 86px;
  border-radius: 12px;
  background: rgba(255,255,255,.18);
}

.preview-logo {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: white;
  margin: -28px auto 0;
  position: relative;
  z-index: 2;
  border: 3px solid white;
  display: grid;
  place-items: center;
  color: var(--muted);
  font-size: 22px;
}

.preview-content {
  margin-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
}

.preview-lines {
  height: 8px;
  background: rgba(255,255,255,.6);
  border-radius: 6px;
}

.line-1 { width: 70%; }
.line-2 { width: 50%; opacity: .7; }

.preview-btn {
  width: 72%;
  height: 32px;
  background: white;
  border-radius: var(--radius-full);
  margin-top: 8px;
}

.theme-check {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 28px;
  height: 28px;
  background: var(--text);
  color: white;
  border-radius: 50%;
  display: grid;
  place-items: center;
  opacity: 0;
  transform: scale(.7);
  transition: all .25s ease;
}

.theme-card.active .theme-check {
  opacity: 1;
  transform: scale(1);
}

.preview-verde { background: linear-gradient(135deg, #1a103d, #2d1b69 50%, #25D366); }
.preview-azul { background: linear-gradient(135deg, #111827, #1e293b); }
.preview-roxo { background: linear-gradient(135deg, #7c3aed, #a855f7 50%, #06b6d4); }
.preview-laranja { background: linear-gradient(135deg, #f97316, #fff8f0); }
.preview-preto { background: linear-gradient(135deg, #1a1a1a, #d4af37); }
.preview-cardapio { background: linear-gradient(135deg, #3e2723, #4e342e); }

.theme-card h3 {
  font-size: 14px;
  font-weight: 700;
  margin: 14px 0 2px;
  text-align: center;
}

.theme-card p {
  font-size: 12px;
  color: var(--muted);
  text-align: center;
}

.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: white;
  border: 1px solid var(--border);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  box-shadow: var(--shadow-md);
  cursor: pointer;
  z-index: 10;
  display: grid;
  place-items: center;
  transition: all .2s ease;
  -webkit-tap-highlight-color: transparent;
}

.carousel-btn:hover {
  transform: translateY(-50%) scale(1.06);
}

.prev { left: -10px; }
.next { right: -10px; }

.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 18px;
}

.carousel-dots span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--border);
  transition: all .2s ease;
  cursor: pointer;
}

.carousel-dots span.active {
  width: 24px;
  background: var(--text);
}

/* ============ STEPS ============ */
.how-section {
  margin: 90px 0 40px;
  text-align: center;
}

.how-section h2 {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 800;
}

.steps {
  display: flex;
  justify-content: center;
  align-items: stretch;
  margin-top: 40px;
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
}

.step {
  flex: 1;
  background: white;
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 24px 16px;
  box-shadow: var(--shadow-sm);
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.step-number {
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--text);
  color: white;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 11px;
  font-weight: 800;
}

.step-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: #f1f5f9;
  display: grid;
  place-items: center;
  margin: 8px auto 12px;
}

.step h3 {
  font-size: 15px;
  font-weight: 700;
}

.step p {
  font-size: 13px;
  color: var(--muted);
  margin-top: 4px;
}

.step-line {
  width: 40px;
  height: 2px;
  background: var(--border);
  border-radius: 2px;
  align-self: center;
  flex-shrink: 0;
  margin: 0 8px;
}

/* ============ FOOTER ============ */
footer {
  margin-top: 80px;
  padding: 32px 0 0;
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--muted);
  font-size: 13px;
}

/* ============ RESPONSIVO ============ */
@media (max-width: 720px) {
  .menu-toggle {
    display: flex;
  }

  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: white;
    flex-direction: column;
    padding: 80px 24px 24px;
    gap: 8px;
    transition: right .35s cubic-bezier(.32,.72,0,1);
    box-shadow: -10px 0 40px rgba(0,0,0,.1);
    z-index: 1000;
  }

  .nav.open {
    right: 0;
  }

  .nav a {
    padding: 14px 16px;
    border-radius: 12px;
    font-size: 16px;
    background: #f8fafc;
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .nav-cta {
    background: var(--text) !important;
    color: white !important;
    justify-content: center;
    font-weight: 600 !important;
  }

  .nav-edit {
    display: flex !important;
  }

  .hero {
    margin: 36px auto 32px;
  }

  .hero h1 {
    font-size: 32px;
  }

  .carousel-btn {
    display: none;
  }

  .carousel-track {
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
    padding-bottom: 8px;
    -webkit-overflow-scrolling: touch;
  }

  .carousel-track::-webkit-scrollbar {
    display: none;
  }

  .theme-card {
    scroll-snap-align: start;
  }

  .steps {
    flex-direction: column;
    align-items: center;
    gap: 0;
  }

  .step {
    width: 100%;
    max-width: 320px;
    margin: 0 auto;
  }

  .step-line {
    width: 2px;
    height: 28px;
    margin: 8px auto;
  }
}