/* ============================================================
   Aster Telecom — Landing Page
   Design System: DESIGN-SYSTEM.md v1.0
   ============================================================ */

:root {
  --color-primary: #F26A21;
  --color-primary-hover: #D9560F;
  --color-primary-tint: #FEF0E7;
  --color-secondary: #3B3A3C;
  --color-accent: #BDBDBD;
  --color-background: #FFFFFF;
  --color-background-alt: #F7F7F8;
  --color-surface: #FFFFFF;
  --color-border: #E5E5E7;
  --color-text-primary: #252427;
  --color-text-secondary: #6E6D71;
  --color-text-disabled: #A9A8AD;
  --color-success: #1F9D55;

  --font-heading: "Montserrat", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;

  --space-1: 4px;  --space-2: 8px;  --space-3: 12px; --space-4: 16px;
  --space-6: 24px; --space-8: 32px; --space-10: 40px; --space-12: 48px;
  --space-16: 64px; --space-24: 96px;

  --radius-sm: 8px; --radius-md: 12px; --radius-lg: 16px; --radius-xl: 20px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 3px rgba(37,36,39,.08), 0 1px 2px rgba(37,36,39,.04);
  --shadow-md: 0 4px 12px rgba(37,36,39,.08);
  --shadow-lg: 0 12px 24px -6px rgba(37,36,39,.12);
  --shadow-xl: 0 24px 48px -12px rgba(37,36,39,.18);
  --shadow-cta: 0 8px 24px -6px rgba(242,106,33,.35);

  --ease-out-expo: cubic-bezier(.16, 1, .3, 1);
  --duration-fast: 150ms;

  --container-max: 1200px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text-primary);
  background: var(--color-background);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3, h4 { font-family: var(--font-heading); line-height: 1.15; letter-spacing: -0.02em; }

.icon { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; flex-shrink: 0; }
.icon path[fill] { fill: currentColor; stroke: none; }

/* ---------- Acessibilidade ---------- */
.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--color-primary); color: #fff; padding: 12px 20px; border-radius: 0 0 var(--radius-md) 0;
}
.skip-link:focus { left: 0; }
:focus-visible { outline: 3px solid rgba(242,106,33,.5); outline-offset: 2px; border-radius: 4px; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

/* ---------- Layout ---------- */
.container { width: 100%; max-width: var(--container-max); margin-inline: auto; padding-inline: var(--space-6); }
.container--narrow { max-width: 800px; }

.section { padding-block: var(--space-16); }
.section--alt { background: var(--color-background-alt); }
.section--dark { background: var(--color-secondary); color: #fff; }
.section--dark h2 { color: #fff; }
.section--dark .section__sub { color: rgba(255,255,255,.72); }

.section h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); font-weight: 800; margin-bottom: var(--space-4); }
.section__sub { font-size: 1.125rem; color: var(--color-text-secondary); max-width: 640px; margin-bottom: var(--space-10); }

.overline {
  display: inline-block; font-size: .75rem; font-weight: 700;
  letter-spacing: .12em; text-transform: uppercase;
  color: var(--color-primary); margin-bottom: var(--space-3);
}
.overline--light { color: #FFA26B; }
.text-primary { color: var(--color-primary); }

/* ---------- Botões ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  font-family: var(--font-body); font-weight: 600; font-size: 1rem;
  min-height: 44px; padding: 10px 26px;
  border-radius: var(--radius-full); border: 1.5px solid transparent;
  text-decoration: none; cursor: pointer; white-space: nowrap;
  transition: background-color var(--duration-fast) ease-out,
              color var(--duration-fast) ease-out,
              box-shadow var(--duration-fast) ease-out,
              transform 100ms ease-out;
}
.btn:active { transform: scale(.97); }
.btn--sm { min-height: 40px; padding: 8px 20px; font-size: .9375rem; }
.btn--lg { min-height: 52px; padding: 14px 32px; font-size: 1.0625rem; }

.btn--primary { background: var(--color-primary); color: #fff; }
.btn--primary:hover { background: var(--color-primary-hover); box-shadow: var(--shadow-cta); }

.btn--outline { border-color: var(--color-primary); color: var(--color-primary-hover); background: transparent; }
.btn--outline:hover { background: var(--color-primary-tint); }

.btn--white { background: #fff; color: var(--color-primary-hover); }
.btn--white:hover { background: #FFF7F2; box-shadow: var(--shadow-lg); }

.btn--ghost-light { color: #fff; border-color: rgba(255,255,255,.4); }
.btn--ghost-light:hover { background: rgba(255,255,255,.12); }

/* ---------- Navbar ---------- */
.navbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}
.navbar__inner { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: var(--space-4); }
.navbar__brand { display: flex; align-items: center; gap: var(--space-3); text-decoration: none; }
.navbar__brand img { width: 44px; height: 44px; border-radius: var(--radius-sm); }
.navbar__brand-text { font-family: var(--font-heading); font-weight: 800; font-size: 1.0625rem; color: var(--color-secondary); letter-spacing: -.01em; }
.navbar__brand-text em { font-style: normal; font-weight: 700; font-size: .625rem; letter-spacing: .18em; color: var(--color-primary); display: block; line-height: 1; }
.navbar__nav { display: flex; align-items: center; gap: var(--space-6); }
.navbar__nav a:not(.btn) {
  text-decoration: none; font-size: .9375rem; font-weight: 500; color: var(--color-secondary);
  transition: color var(--duration-fast) ease-out;
}
.navbar__nav a:not(.btn):hover { color: var(--color-primary); }
.navbar__toggle { display: none; background: none; border: 0; cursor: pointer; padding: 10px; }
.navbar__toggle span { display: block; width: 22px; height: 2px; background: var(--color-secondary); margin: 5px 0; border-radius: 2px; transition: transform 200ms var(--ease-out-expo), opacity 150ms; }

@media (max-width: 860px) {
  .navbar__toggle { display: block; }
  .navbar__nav {
    position: absolute; top: 72px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; border-bottom: 1px solid var(--color-border);
    padding: var(--space-4) var(--space-6) var(--space-6);
    display: none;
  }
  .navbar__nav.is-open { display: flex; }
  .navbar__nav a:not(.btn) { padding: 14px 0; border-bottom: 1px solid var(--color-background-alt); }
  .navbar__nav .btn { margin-top: var(--space-4); }
  .navbar__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .navbar__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .navbar__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
}

/* ---------- Halftone (assinatura da marca) ---------- */
.hero__halftone, .cta-final__halftone {
  position: absolute; inset: 0; pointer-events: none;
  background-image: radial-gradient(circle, var(--color-accent) 1.5px, transparent 1.5px);
  background-size: 18px 18px;
  opacity: .18;
  -webkit-mask-image: radial-gradient(ellipse 60% 70% at 85% 20%, #000 0%, transparent 70%);
  mask-image: radial-gradient(ellipse 60% 70% at 85% 20%, #000 0%, transparent 70%);
}
.cta-final__halftone {
  background-image: radial-gradient(circle, #fff 1.5px, transparent 1.5px);
  opacity: .12;
  -webkit-mask-image: radial-gradient(ellipse 60% 80% at 10% 90%, #000 0%, transparent 70%);
  mask-image: radial-gradient(ellipse 60% 80% at 10% 90%, #000 0%, transparent 70%);
}

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; padding-block: var(--space-12) var(--space-16); }
.hero__grid { position: relative; display: grid; gap: var(--space-12); align-items: center; }
.hero h1 { font-size: clamp(2.125rem, 5.2vw, 3.5rem); font-weight: 800; line-height: 1.1; margin-bottom: var(--space-4); }
.hero__sub { font-size: clamp(1.0625rem, 2vw, 1.25rem); color: var(--color-text-secondary); max-width: 540px; margin-bottom: var(--space-8); }
.hero__ctas { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-bottom: var(--space-10); }
.hero__stats { display: flex; flex-wrap: wrap; gap: var(--space-8); }
.hero__stats dt { font-family: var(--font-heading); font-weight: 800; font-size: 1.5rem; color: var(--color-secondary); }
.hero__stats dd { font-size: .875rem; color: var(--color-text-secondary); }

@media (min-width: 1024px) {
  .hero { padding-block: var(--space-16) 80px; }
  .hero__grid { grid-template-columns: 1.1fr 1fr; }
}

/* ---------- Hero mock (dashboard) ---------- */
.mock {
  background: rgba(255,255,255,.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  max-width: 480px;
  margin-inline: auto;
}
.mock__bar { display: flex; gap: 6px; padding: 14px 18px; border-bottom: 1px solid var(--color-border); }
.mock__bar span { width: 10px; height: 10px; border-radius: 50%; background: var(--color-border); }
.mock__bar span:first-child { background: var(--color-primary); }
.mock__body { padding: var(--space-6); display: grid; gap: var(--space-4); }
.mock__row { display: flex; align-items: center; gap: var(--space-3); }
.mock__row--soft { background: var(--color-background-alt); border-radius: var(--radius-md); padding: var(--space-3); }
.mock__avatar {
  width: 40px; height: 40px; border-radius: 50%; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  background: var(--color-primary-tint); color: var(--color-primary-hover);
  font-family: var(--font-heading); font-weight: 800;
}
.mock__avatar--wa { background: #E7F8EE; color: var(--color-success); }
.mock__name { font-weight: 600; font-size: .9375rem; }
.mock__meta { font-size: .8125rem; color: var(--color-text-secondary); }
.mock__pill {
  margin-left: auto; font-size: .6875rem; font-weight: 600;
  padding: 4px 10px; border-radius: var(--radius-full);
  background: var(--color-background-alt); color: var(--color-text-secondary);
}
.mock__pill--live { background: var(--color-primary-tint); color: var(--color-primary-hover); }
.mock__wave { display: flex; align-items: center; gap: 4px; height: 44px; padding-inline: var(--space-2); }
.mock__wave i {
  flex: 1; background: var(--color-primary); border-radius: 2px; opacity: .85;
  height: calc(20% + (var(--h, 0)) * 1%);
  animation: wave 1.4s ease-in-out infinite alternate;
}
.mock__wave i:nth-child(odd) { --h: 55; animation-delay: .15s; }
.mock__wave i:nth-child(even) { --h: 25; }
.mock__wave i:nth-child(3n) { --h: 70; animation-delay: .3s; }
.mock__wave i:nth-child(5n) { --h: 40; animation-delay: .45s; }
@keyframes wave { from { transform: scaleY(.6); } to { transform: scaleY(1.05); } }
.mock__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-3); }
.mock__stat {
  background: var(--color-background-alt); border-radius: var(--radius-md);
  padding: var(--space-3); text-align: center;
}
.mock__stat strong { display: block; font-family: var(--font-heading); font-weight: 800; font-size: 1.25rem; color: var(--color-secondary); }
.mock__stat span { font-size: .6875rem; color: var(--color-text-secondary); line-height: 1.3; display: block; }

/* ---------- Cards ---------- */
.cards-grid { display: grid; gap: var(--space-6); grid-template-columns: 1fr; }
@media (min-width: 640px)  { .cards-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) {
  .cards-grid--3 { grid-template-columns: repeat(3, 1fr); }
  .cards-grid--4 { grid-template-columns: repeat(4, 1fr); }
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8) var(--space-6);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 200ms ease-out, transform 200ms ease-out;
}
.card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.card h3 { font-size: 1.125rem; font-weight: 700; margin-bottom: var(--space-2); letter-spacing: -.01em; }
.card p { font-size: .9375rem; color: var(--color-text-secondary); }
.card__icon {
  width: 48px; height: 48px; border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  background: var(--color-primary-tint); color: var(--color-primary-hover);
  margin-bottom: var(--space-4);
}
.card__icon .icon { width: 24px; height: 24px; }

.card--dark { background: rgba(255,255,255,.06); border-color: rgba(255,255,255,.12); box-shadow: none; }
.card--dark h3 { color: #fff; }
.card--dark p { color: rgba(255,255,255,.68); }
.card--dark .card__icon { background: rgba(242,106,33,.18); color: #FFA26B; }
.card--dark:hover { box-shadow: 0 12px 24px -6px rgba(0,0,0,.3); }

/* ---------- Stats band (seção dark) ---------- */
.stats-band {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-8);
  margin-top: var(--space-16); padding-top: var(--space-10);
  border-top: 1px solid rgba(255,255,255,.12);
}
@media (min-width: 768px) { .stats-band { grid-template-columns: repeat(4, 1fr); } }
.stats-band dt { font-family: var(--font-heading); font-weight: 800; font-size: clamp(1.75rem, 3vw, 2.5rem); color: var(--color-primary); }
.stats-band dd { color: rgba(255,255,255,.68); font-size: .9375rem; }

/* ---------- Steps ---------- */
.steps {
  list-style: none; display: grid; gap: var(--space-6);
  counter-reset: step; margin-top: var(--space-10);
}
@media (min-width: 768px)  { .steps { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1100px) { .steps { grid-template-columns: repeat(5, 1fr); } }
.step {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: var(--space-6);
  position: relative;
}
.step__num {
  display: flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--color-primary); color: #fff;
  font-family: var(--font-heading); font-weight: 800;
  margin-bottom: var(--space-4);
}
.step h3 { font-size: 1.0625rem; margin-bottom: var(--space-2); }
.step p { font-size: .875rem; color: var(--color-text-secondary); }

/* ---------- Depoimentos ---------- */
.card--quote { display: flex; flex-direction: column; gap: var(--space-6); }
.card--quote blockquote p { font-size: 1rem; color: var(--color-text-primary); }
.card--quote figcaption { display: flex; align-items: center; gap: var(--space-3); margin-top: auto; }
.card--quote figcaption strong { display: block; font-size: .9375rem; }
.card--quote figcaption span:not(.avatar) { font-size: .8125rem; color: var(--color-text-secondary); }
.avatar {
  width: 44px; height: 44px; border-radius: 50%; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  background: var(--color-primary-tint); color: var(--color-primary-hover);
  font-family: var(--font-heading); font-weight: 800;
}

/* ---------- FAQ ---------- */
.faq { display: grid; gap: var(--space-3); margin-top: var(--space-8); }
.faq__item {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); overflow: hidden;
}
.faq__item summary {
  cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; gap: var(--space-4);
  font-weight: 600; font-size: 1rem; padding: var(--space-4) var(--space-6);
  transition: color var(--duration-fast) ease-out;
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after {
  content: ""; flex-shrink: 0; width: 10px; height: 10px;
  border-right: 2px solid var(--color-primary); border-bottom: 2px solid var(--color-primary);
  transform: rotate(45deg); transition: transform 200ms var(--ease-out-expo);
}
.faq__item[open] summary { color: var(--color-primary-hover); }
.faq__item[open] summary::after { transform: rotate(225deg); }
.faq__item p { padding: 0 var(--space-6) var(--space-6); color: var(--color-text-secondary); font-size: .9375rem; }

/* ---------- CTA Final ---------- */
.cta-final {
  position: relative; overflow: hidden;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
  color: #fff; padding-block: var(--space-24);
}
.cta-final__inner { position: relative; text-align: center; max-width: 760px; }
.cta-final h2 { font-size: clamp(1.75rem, 4.5vw, 2.75rem); font-weight: 800; margin-bottom: var(--space-4); }
.cta-final p { font-size: 1.125rem; opacity: .92; margin-bottom: var(--space-8); }
.cta-final__actions { display: flex; flex-wrap: wrap; gap: var(--space-3); justify-content: center; }

/* ---------- Footer ---------- */
.footer { background: var(--color-secondary); color: rgba(255,255,255,.72); padding-block: var(--space-16) var(--space-6); }
.footer__grid { display: grid; gap: var(--space-10); grid-template-columns: 1fr; padding-bottom: var(--space-10); }
@media (min-width: 768px) { .footer__grid { grid-template-columns: 2fr 1fr 1fr 1.4fr; } }
.footer__brand img { border-radius: var(--radius-md); margin-bottom: var(--space-4); }
.footer__brand p { font-size: .9375rem; max-width: 320px; }
.footer__social { display: flex; gap: var(--space-3); margin-top: var(--space-6); }
.footer__social a {
  width: 40px; height: 40px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid rgba(255,255,255,.2); color: #fff;
  transition: background-color var(--duration-fast) ease-out, border-color var(--duration-fast) ease-out;
}
.footer__social a:hover { background: var(--color-primary); border-color: var(--color-primary); }
.footer__col h3 {
  font-family: var(--font-body); font-size: .75rem; font-weight: 700;
  letter-spacing: .12em; text-transform: uppercase; color: #fff; margin-bottom: var(--space-4);
}
.footer__col a { display: block; text-decoration: none; font-size: .9375rem; padding-block: 6px; transition: color var(--duration-fast) ease-out; }
.footer__col a:hover { color: var(--color-primary); }
.footer__bottom {
  display: flex; flex-wrap: wrap; gap: var(--space-3); justify-content: space-between;
  border-top: 1px solid rgba(255,255,255,.12); padding-top: var(--space-6);
  font-size: .8125rem; color: rgba(255,255,255,.5);
}

/* ---------- WhatsApp flutuante ---------- */
.wa-float {
  position: fixed; right: var(--space-6); bottom: var(--space-6); z-index: 60;
  width: 56px; height: 56px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: #25D366; color: #fff;
  box-shadow: 0 8px 24px -6px rgba(37,211,102,.5);
  transition: transform 150ms ease-out, box-shadow 150ms ease-out;
}
.wa-float:hover { transform: scale(1.08); box-shadow: 0 12px 28px -6px rgba(37,211,102,.6); }
.wa-float .icon { width: 26px; height: 26px; }

/* ---------- Reveal (estado inicial p/ GSAP) ---------- */
.js .reveal { opacity: 0; transform: translateY(16px); }