/* ===================================================================
   SISTEMA DE DESIGN — RBS Tech Teach
   Paleta derivada do banner (tinta líquida: verde→azul→roxo)
   =================================================================== */
:root {
  --ink:        #0f1419;   /* texto principal, quase preto azulado */
  --ink-2:      #141a2e;   /* variante violeta do ink — faixa de fusos */
  --ink-soft:   #3d4654;   /* texto secundário */
  --paper:      #ffffff;   /* fundo */
  --mist:       #f4f6f9;   /* fundo de seção alternada */
  --teal:       #1f9ea8;   /* acento — azul-petróleo do banner */
  --teal-text:  #147a82;   /* variante escura do teal para texto pequeno (4.5:1 em --paper e --mist) */
  --violet:     #6b4ed8;   /* acento — roxo do banner; cor de ação (botões) */
  --violet-deep: #5a3fc6;  /* hover dos botões violeta */
  --line:       #e2e6ec;   /* divisórias */

  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body:    'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-mono:    'IBM Plex Mono', ui-monospace, 'Cascadia Mono', monospace;

  --maxw: 920px;
  --gap:  clamp(3rem, 7vw, 6rem);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-weight: 400;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2rem);
}

/* ---------- HERO ---------- */
.hero-banner {
  height: clamp(200px, 28vw, 400px);
  background: linear-gradient(rgba(15,20,25,0.14), rgba(15,20,25,0.14)), url('assets/banner.jpg') center 50%/cover no-repeat;
}
.hero-content {
  background: var(--ink);
  color: #fff;
  text-align: center;
  padding-block: clamp(2.5rem, 6vw, 4rem);
}
.hero h1 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(2.1rem, 6vw, 3.5rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  text-wrap: balance;
  max-width: 16ch;
  margin-inline: auto;
}
.hero p {
  margin-top: 1.25rem;
  font-size: clamp(1rem, 2.4vw, 1.2rem);
  max-width: 42ch;
  margin-inline: auto;
}

/* ---------- FAIXA DE FUSOS ---------- */
.tz {
  background: var(--ink-2);
  border-block: 1px solid rgba(255,255,255,0.07);
  overflow: hidden;
}
.tz-track { display: flex; width: max-content; }
.tz-set { display: flex; flex: 0 0 auto; }
.tz-item {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.78);
  white-space: nowrap;
  padding-block: 0.6rem;
  padding-right: 1.4rem;
}
.tz-item b { color: #fff; font-weight: 500; text-transform: uppercase; }
.tz-item::before {
  content: '●';
  color: var(--teal);
  font-size: 0.5rem;
  vertical-align: 0.12em;
  margin-right: 1.4rem;
}
@media (prefers-reduced-motion: no-preference) {
  .tz-track { animation: scroll-left 32s linear infinite; }
}
@media (prefers-reduced-motion: reduce) {
  .tz-track { width: auto; justify-content: center; }
  .tz-set { flex-wrap: wrap; justify-content: center; }
  .tz-set:last-child { display: none; }
}

/* ---------- BOTÕES ---------- */
.btn {
  display: inline-block;
  font: inherit;
  font-weight: 600;
  padding: 0.85em 1.6em;
  border-radius: 999px;
  border: 0;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.btn-primary {
  background: rgba(255,255,255,0.92);
  color: var(--violet);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.18); }
.btn-ghost { background: transparent; color: #fff; border: 1.5px solid rgba(255,255,255,0.95); }
.btn-ghost:hover { background: rgba(255,255,255,0.12); }
.hero .actions { margin-top: 2.25rem; display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* ---------- SEÇÕES ---------- */
section { padding-block: var(--gap); }
section.alt { background: var(--mist); }
#agendar { padding-block: calc(var(--gap) * 1.35); }
#aulas { padding-block: calc(var(--gap) * 0.85); }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal-text);
  font-weight: 500;
  margin-bottom: 0.75rem;
}
.eyebrow-en { color: var(--ink-soft); font-weight: 400; }
.tr {
  text-decoration: underline dotted var(--teal);
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}
.section-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.75rem, 4.5vw, 2.6rem);
  line-height: 1.1;
  letter-spacing: -0.01em;
  text-wrap: balance;
  margin-bottom: 1rem;
}
.prose { color: var(--ink-soft); max-width: 60ch; }

/* ---------- SOBRE ---------- */
#sobre {
  background:
    radial-gradient(640px 420px at 90% 0%, rgba(31,158,168,0.07), transparent 70%),
    radial-gradient(560px 400px at 0% 100%, rgba(107,78,216,0.05), transparent 70%);
}
.about { display: grid; gap: 2rem; }
.about-text { min-width: 0; }
.call-frame {
  justify-self: center;
  width: 100%;
  max-width: 300px;
  border-radius: 14px;
  overflow: hidden;
  background: var(--ink);
  box-shadow: 0 16px 40px rgba(15,20,25,0.18);
}
.call-top { display: flex; align-items: center; gap: 6px; padding: 0.5rem 0.75rem; }
.call-top i { width: 7px; height: 7px; border-radius: 50%; background: #2c3442; }
.call-top span {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.72);
  margin-left: 4px;
}
.portrait {
  display: block;
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  height: auto;
}
.call-bar { display: flex; align-items: center; gap: 0.5rem; padding: 0.55rem 0.75rem; }
.call-dot { width: 8px; height: 8px; border-radius: 50%; background: #34c98e; flex: 0 0 auto; }
@media (prefers-reduced-motion: no-preference) {
  .call-dot { animation: call-pulse 2s ease-out infinite; }
}
@keyframes call-pulse {
  0%   { box-shadow: 0 0 0 0 rgba(52,201,142,0.5); }
  70%  { box-shadow: 0 0 0 8px rgba(52,201,142,0); }
  100% { box-shadow: 0 0 0 0 rgba(52,201,142,0); }
}
.call-name { font-size: 0.75rem; color: #e8ecf2; white-space: nowrap; }
.call-cap {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: #b8c4dd;
  background: rgba(255,255,255,0.08);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  white-space: nowrap;
}
.badges-label {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--teal-text);
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}
.badges {
  overflow: hidden;
  padding-block: 0.5rem;
}
.badges-track { display: flex; width: max-content; }
.badges-set {
  display: flex;
  flex: 0 0 auto;
  gap: 2rem;
  padding-right: 2rem;
}
.badge-item {
  flex: 0 0 150px;
  text-align: center;
  font-size: 0.8rem;
  color: var(--ink-soft);
}
@keyframes scroll-left {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}
@media (prefers-reduced-motion: no-preference) {
  .badges-track { animation: scroll-left 24s linear infinite; }
  .badges:hover .badges-track { animation-play-state: paused; }
  .badges {
    mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
    -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  }
}
@media (prefers-reduced-motion: reduce) {
  .badges-track { width: auto; }
  .badges-set { flex-wrap: wrap; padding-right: 0; }
  .badges-set[aria-hidden="true"] { display: none; }
}
.badge-item img { width: 150px; height: 150px; object-fit: contain; }
.badges-note {
  font-size: 0.85rem;
  color: var(--ink-soft);
  margin-top: 0.75rem;
  max-width: 60ch;
}

/* ---------- COMO FUNCIONAM (cards + chat) ---------- */
#aulas {
  background:
    radial-gradient(620px 420px at 100% 100%, rgba(107,78,216,0.06), transparent 70%),
    var(--mist);
}
.method { display: grid; gap: 2.5rem; align-items: center; }
@media (min-width: 840px) {
  .method { grid-template-columns: 1.15fr 0.85fr; }
}
.features { list-style: none; margin-top: 1.5rem; display: grid; gap: 0.85rem; }
@media (min-width: 540px) {
  .features { grid-template-columns: 1fr 1fr; }
}
.features li {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1rem 1.1rem;
  color: var(--ink);
  font-size: 0.95rem;
  line-height: 1.5;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.features li:hover { transform: translateY(-3px); box-shadow: 0 10px 24px rgba(15,20,25,0.1); }
.feature-n {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--teal-text);
  margin-bottom: 0.4rem;
}
.chat { display: flex; flex-direction: column; gap: 0.7rem; max-width: 24rem; }
.chat-bub { padding: 0.8rem 1rem; border-radius: 14px; font-size: 0.95rem; line-height: 1.5; }
.chat-pt {
  align-self: flex-end;
  background: var(--violet);
  color: #fff;
  border-bottom-right-radius: 4px;
}
.chat-en {
  align-self: flex-start;
  background: var(--paper);
  border: 1px solid var(--line);
  border-bottom-left-radius: 4px;
}
.chat-who {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0.7;
  margin-bottom: 0.25rem;
}
.chat-type { font-family: var(--font-mono); font-size: 0.8rem; }
@media (prefers-reduced-motion: no-preference) {
  .chat-type {
    display: inline-block;
    overflow: hidden;
    white-space: nowrap;
    vertical-align: bottom;
    width: 0;
    border-right: 2px solid var(--violet);
  }
  .chat.play .chat-type {
    animation: chat-typing 2.2s steps(30) 0.4s forwards, chat-caret 0.75s step-end infinite;
  }
}
@keyframes chat-typing { to { width: 30ch; } }
@keyframes chat-caret { 50% { border-color: transparent; } }

/* ---------- AGENDAMENTO (faixa escura + mapa de pontos) ---------- */
#agendar {
  position: relative;
  background: var(--ink);
  color: #fff;
  text-align: center;
  overflow: hidden;
}
#agendar::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255,255,255,0.13) 1.2px, transparent 1.2px);
  background-size: 22px 22px;
  mask-image: radial-gradient(80% 120% at 50% 50%, #000 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(80% 120% at 50% 50%, #000 30%, transparent 100%);
}
.map-arcs { position: absolute; inset: 0; width: 100%; height: 100%; }
.map-city {
  font-family: var(--font-mono);
  font-size: 9px;
  fill: rgba(255,255,255,0.65);
  letter-spacing: 0.1em;
}
#agendar .wrap { position: relative; }
#agendar .eyebrow { color: #2bb6c2; }
#agendar .eyebrow-en { color: rgba(255,255,255,0.72); }
#agendar .prose { color: rgba(255,255,255,0.85); margin-inline: auto; }
#agendar :focus-visible { outline-color: #fff; }
.schedule-cta { margin-top: 1.5rem; }
.btn-schedule { background: var(--violet); color: #fff; margin-top: 1rem; }
.btn-schedule:hover { background: var(--violet-deep); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.18); }
.schedule-note {
  margin-top: 0.75rem;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.78);
}

/* ---------- FORMULÁRIO DE CONTATO ---------- */
#contato {
  background:
    radial-gradient(620px 400px at 100% 0%, rgba(107,78,216,0.05), transparent 70%),
    var(--mist);
}
.contact-form { margin-top: 1.5rem; display: grid; gap: 1rem; max-width: 32rem; }
.contact-form label { font-weight: 600; font-size: 0.9rem; display: block; margin-bottom: 0.35rem; }
.contact-form input,
.contact-form textarea {
  width: 100%;
  font: inherit;
  padding: 0.7em 0.85em;
  border: 1.5px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
}
.contact-form input:focus,
.contact-form textarea:focus { outline: 2px solid var(--teal); border-color: transparent; }
.contact-form .btn-submit { background: var(--violet); color: #fff; justify-self: start; }
.contact-form .btn-submit:hover { background: var(--violet-deep); }
.contact-form .btn-submit:disabled { opacity: 0.7; cursor: wait; }
.form-status { font-size: 0.9rem; font-weight: 600; }
.form-status.is-ok { color: var(--teal-text); }
.form-status.is-error { color: #b3261e; }

/* ---------- RODAPÉ ---------- */
footer {
  background: var(--ink);
  color: rgba(255,255,255,0.8);
  padding-block: 2.5rem;
  text-align: center;
  font-size: 0.9rem;
}
.footer-link { color: #fff; }

/* ---------- ACESSIBILIDADE ---------- */
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; scroll-behavior: auto !important; }
}
:focus-visible { outline: 3px solid var(--teal); outline-offset: 2px; }
.hero :focus-visible { outline-color: #fff; }

/* ---------- DESKTOP (#sobre lado-a-lado, badges em grade) ---------- */
@media (min-width: 720px) {
  .about { grid-template-columns: 1fr auto; align-items: start; }
  .about-text { grid-column: 1; grid-row: 1; }
  .about .call-frame { grid-column: 2; grid-row: 1; }
}