/* ============================================================
   Unchained Tech — Bots, Landing Pages & SaaS
   Design system: direto, rápido, sem rodeio. Paleta quente
   (poeira/entardecer) em vez do azul-tech genérico. Assinatura:
   mockup de conversa de WhatsApp respondida na hora.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Bebas+Neue&family=Inter:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

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

:root {
  --bg: #14100d;
  --surface: #1d1712;
  --surface-alt: #251d16;
  --border: #362b20;
  --text: #f5efe6;
  --text-muted: #a69682;
  --amber: #e8a33d;
  --amber-soft: #f0c47a;
  --rust: #b5432e;
  --whatsapp: #2fbf63;

  --font-display: "Bebas Neue", sans-serif;
  --font-body: "Inter", sans-serif;
  --font-mono: "IBM Plex Mono", monospace;

  --container: 1120px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg);
  background-image:
    radial-gradient(circle at 12% 8%, rgba(232, 163, 61, 0.10), transparent 40%),
    radial-gradient(circle at 90% 30%, rgba(181, 67, 46, 0.10), transparent 45%);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.6;
}

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

:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
  border-radius: 4px;
}

.wrap {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

section {
  padding-block: clamp(3.5rem, 8vw, 6.5rem);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  color: var(--amber);
  margin-bottom: 1rem;
}

.section-title {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: 0.01em;
  font-size: clamp(1.9rem, 4.5vw, 2.75rem);
  line-height: 1.05;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

.section-lede {
  color: var(--text-muted);
  max-width: 62ch;
  font-size: 1.05rem;
}

/* ============================================================
   Nav
   ============================================================ */

.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background-color: rgba(20, 16, 13, 0.88);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.nav__inner {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding: 1.1rem 1.5rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1rem;
}

.nav__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-size: 1.6rem;
  letter-spacing: 0.03em;
  color: var(--text);
  text-decoration: none;
}

.nav__brand-icon {
  flex-shrink: 0;
}

.nav__brand span {
  color: var(--amber);
}

.nav__links {
  display: none;
  gap: 1.75rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.nav__links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  text-decoration: none;
  transition: color 0.2s ease;
}

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

/* buttons */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  white-space: nowrap;
  transition: transform 0.2s ease, background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.btn:hover { transform: translateY(-2px); }

.btn-primary {
  background-color: var(--whatsapp);
  color: #08160d;
}

.btn-primary:hover { background-color: #45d17d; }

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

.btn-ghost:hover {
  border-color: var(--amber);
  color: var(--amber);
}

.btn-sm {
  padding: 0.6rem 1.1rem;
  font-size: 0.85rem;
  min-height: 44px;
}

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

.hero {
  padding-block: clamp(3rem, 8vw, 6rem);
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2.5rem, 6vw, 4rem);
  align-items: center;
}

.hero__title {
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: clamp(2.4rem, 7vw, 4rem);
  line-height: 1.02;
  letter-spacing: 0.005em;
  margin-bottom: 1.5rem;
}

.hero__title span {
  color: var(--amber);
}

.hero__lede {
  color: var(--text-muted);
  font-size: 1.1rem;
  max-width: 52ch;
  margin-bottom: 2rem;
}

.hero__ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-bottom: 1.25rem;
}

.hero__note {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* chat mockup — signature element */

.chat-mock {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  max-width: 400px;
  margin-inline: auto;
  width: 100%;
}

.chat-mock__header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding-bottom: 0.9rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 0.2rem;
}

.chat-mock__dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background-color: var(--whatsapp);
}

.chat-mock__label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
}

.bubble {
  padding: 0.7rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.92rem;
  max-width: 82%;
}

.bubble-in {
  background-color: var(--surface-alt);
  border: 1px solid var(--border);
  align-self: flex-start;
  border-bottom-left-radius: 4px;
}

.bubble-out {
  background-color: var(--whatsapp);
  color: #08160d;
  align-self: flex-end;
  border-bottom-right-radius: 4px;
  font-weight: 500;
}

.chat-mock__time {
  align-self: flex-end;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--whatsapp);
  margin-top: -0.4rem;
}

/* ============================================================
   Pain section
   ============================================================ */

.pain {
  background-color: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.pain__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

.pain__list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.pain__item {
  display: flex;
  gap: 0.9rem;
  align-items: flex-start;
}

.pain__item svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  margin-top: 0.2rem;
  color: var(--rust);
}

.pain__item p {
  color: var(--text-muted);
}

.pain__item strong {
  color: var(--text);
}

/* ============================================================
   Services
   ============================================================ */

.services__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.service-card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.service-card:hover {
  border-color: var(--amber);
  transform: translateY(-3px);
}

.service-card__icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background-color: var(--surface-alt);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--amber);
}

.service-card__icon svg {
  width: 22px;
  height: 22px;
}

.service-card__title {
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: 1.3rem;
  letter-spacing: 0.01em;
}

.service-card__text {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.service-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: auto;
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  border: 1px solid var(--border);
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
}

/* ============================================================
   Process — numbered (real sequence)
   ============================================================ */

.process {
  background-color: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.process__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-top: 2.5rem;
}

.process-step {
  display: flex;
  gap: 1.25rem;
}

.process-step__number {
  font-family: var(--font-display);
  font-size: 2.2rem;
  color: var(--amber);
  line-height: 1;
  flex-shrink: 0;
  width: 2.5rem;
}

.process-step__title {
  font-weight: 700;
  margin-bottom: 0.35rem;
}

.process-step__text {
  color: var(--text-muted);
  font-size: 0.95rem;
}

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

.about-card__name {
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: 1.3rem;
  letter-spacing: 0.01em;
}

.about-card__name span {
  color: var(--amber);
}

.about-card__links {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: auto;
}

.about-card__links a {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.about-card__links a:hover {
  color: var(--amber);
}

/* ============================================================
   FAQ
   ============================================================ */

.faq {
  max-width: 760px;
}

.faq-item {
  border-bottom: 1px solid var(--border);
}

.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 1.25rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 600;
  gap: 1rem;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--amber);
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item p {
  color: var(--text-muted);
  padding-bottom: 1.25rem;
  max-width: 62ch;
}

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

.cta-final {
  text-align: center;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: clamp(2.5rem, 6vw, 4rem) 1.5rem;
  max-width: calc(var(--container) - 3rem);
  margin-inline: auto;
}

.eyebrow--center {
  justify-content: center;
}

.cta-final .section-title {
  margin-bottom: 0.75rem;
}

.cta-final .section-lede {
  margin-inline: auto;
  margin-bottom: 2rem;
}

.cta-final .btn-row {
  display: flex;
  justify-content: center;
}

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

.footer {
  border-top: 1px solid var(--border);
  padding: 2rem 1.5rem;
}

.footer__inner {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer__inner a {
  text-decoration: none;
  color: var(--text-muted);
  transition: color 0.2s ease;
}

.footer__inner a:hover {
  color: var(--amber);
}

.footer__links {
  display: flex;
  gap: 1.5rem;
}

/* ============================================================
   Breakpoints
   ============================================================ */

@media (min-width: 720px) {
  .nav__links {
    display: flex;
  }

  .services__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .pain__grid {
    grid-template-columns: 1.1fr 0.9fr;
  }
}

@media (min-width: 860px) {
  .process__grid {
    grid-template-columns: repeat(2, 1fr);
    column-gap: 3rem;
  }
}

@media (min-width: 960px) {
  .hero__inner {
    grid-template-columns: 1.15fr 0.85fr;
  }
}