/*
 * Abertura compartilhada dos Treinos de Fixação F5.
 * Piloto ativo: treino_windows.html.
 * Os demais treinos devem importar este arquivo quando forem migrados.
 */

html, body {
  margin: 0; padding: 0;
  background: #0a0f1e;
  color: #f0f6ff;
  font-family: 'Barlow', system-ui, sans-serif;
  min-height: 100vh;
}
body {
  --fix-accent: #38bdf8;
  --fix-accent-soft: #7dd3fc;
  --fix-accent-rgb: 56, 189, 248;
}
.fix-theme-word {
  --fix-accent: #60a5fa;
  --fix-accent-soft: #bfdbfe;
  --fix-accent-rgb: 59, 130, 246;
}
.fix-theme-word #intro-screen {
  background:
    radial-gradient(circle at 10% 10%, rgba(37, 99, 235, 0.28), transparent 31%),
    radial-gradient(circle at 90% 82%, rgba(250, 204, 21, 0.1), transparent 25%),
    linear-gradient(145deg, #06142c 0%, #0a1d3d 56%, #071327 100%);
}
.fix-theme-word .intro-hero {
  background: linear-gradient(150deg, rgba(12, 43, 91, 0.96), rgba(6, 24, 52, 0.98));
}
.fix-theme-powerpoint {
  --fix-accent: #fb923c;
  --fix-accent-soft: #fed7aa;
  --fix-accent-rgb: 249, 115, 22;
}
.fix-theme-powerpoint #intro-screen {
  background: radial-gradient(circle at 10% 12%, rgba(234, 88, 12, 0.28), transparent 31%), radial-gradient(circle at 90% 82%, rgba(250, 204, 21, 0.11), transparent 25%), linear-gradient(145deg, #210c18 0%, #351224 56%, #160b1b 100%);
}
.fix-theme-powerpoint .intro-hero {
  background: linear-gradient(150deg, rgba(83, 27, 36, 0.96), rgba(41, 13, 29, 0.98));
}
.fix-theme-excel { --fix-accent:#34d399; --fix-accent-soft:#a7f3d0; --fix-accent-rgb:16,185,129; }
.fix-theme-excel #intro-screen { background:radial-gradient(circle at 10% 12%,rgba(16,185,129,.26),transparent 31%),radial-gradient(circle at 90% 82%,rgba(250,204,21,.1),transparent 25%),linear-gradient(145deg,#061b17,#0a3026 56%,#071814); }
.fix-theme-excel .intro-hero { background:linear-gradient(150deg,rgba(9,72,55,.96),rgba(5,39,32,.98)); }
.fix-theme-google { --fix-accent:#60a5fa;--fix-accent-soft:#bfdbfe;--fix-accent-rgb:59,130,246; }
.fix-theme-google #intro-screen { background:radial-gradient(circle at 10% 12%,rgba(59,130,246,.28),transparent 31%),radial-gradient(circle at 88% 80%,rgba(34,197,94,.16),transparent 26%),linear-gradient(145deg,#071b38,#102c58 56%,#091a32); }
.fix-theme-google .intro-hero { background:linear-gradient(150deg,rgba(18,66,130,.96),rgba(8,35,75,.98)); }
.fix-theme-internet { --fix-accent:#22d3ee;--fix-accent-soft:#a5f3fc;--fix-accent-rgb:34,211,238; }
.fix-theme-internet #intro-screen { background:radial-gradient(circle at 10% 12%,rgba(6,182,212,.25),transparent 31%),radial-gradient(circle at 90% 82%,rgba(236,72,153,.14),transparent 25%),linear-gradient(145deg,#061725,#0a3040 56%,#081824); }
.fix-theme-internet .intro-hero { background:linear-gradient(150deg,rgba(8,69,82,.96),rgba(5,35,48,.98)); }
body.intro-active { overflow: hidden; }

/* ── Tela de introdução ─────────────────────────────────── */
#intro-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100vh;
  height: 100dvh;
  min-height: 0;
  padding: 1.2rem 1.5rem;
  text-align: center;
  overflow: hidden;
  box-sizing: border-box;
}

.intro-back {
  position: fixed;
  top: 0.8rem;
  left: 0.8rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.82rem;
  color: #8ba3c0;
  text-decoration: none;
  padding: 0.35rem 0.7rem;
  border: 1px solid rgba(56,189,248,.2);
  border-radius: 8px;
  transition: color .2s, border-color .2s;
  z-index: 10;
  background: rgba(10, 15, 30, 0.85);
  backdrop-filter: blur(8px);
}
.intro-back:hover { color: #22d3ee; border-color: #22d3ee; }

.intro-icon {
  width: 54px;
  height: 54px;
  background: linear-gradient(135deg, #1a2235, #111827);
  border: 1px solid rgba(56,189,248,.2);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 0.6rem;
  box-shadow: 0 0 24px rgba(34,211,238,.12);
}
.intro-icon svg {
  width: 28px; height: 28px;
  fill: none; stroke: #22d3ee;
  stroke-width: 1.8;
  stroke-linecap: round; stroke-linejoin: round;
}

.intro-eyebrow {
  display: block;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: #22d3ee;
  text-transform: uppercase;
  margin-bottom: 0.2rem;
}

.intro-title {
  font-size: clamp(1.5rem, 4vw, 2.1rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 0.4rem;
}
.intro-title span { color: #facc15; }

.intro-desc {
  font-size: 0.92rem;
  color: #8ba3c0;
  max-width: 460px;
  margin: 0 auto 0.8rem;
  line-height: 1.45;
}

/* Regras */
.intro-rules {
  background: #111827;
  border: 1px solid rgba(56,189,248,.14);
  border-radius: 12px;
  padding: 0.8rem 1.1rem;
  max-width: 480px;
  width: 100%;
  margin: 0 auto 0.8rem;
  text-align: left;
}
.intro-rules h2 {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #22d3ee;
  margin-bottom: 0.5rem;
}
.intro-rules ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.intro-rules li {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.84rem;
  color: #d1e8ff;
  line-height: 1.35;
}
.intro-rules li i {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  font-style: normal;
  margin-top: 1px;
}
.rule-ok  { background: rgba(34,197,94,.15);  color: #86efac; }
.rule-bad { background: rgba(248,113,113,.15); color: #fca5a5; }
.rule-tip { background: rgba(250,204,21,.12);  color: #fef08a; }

/* Meta */
.intro-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.2rem;
  flex-wrap: wrap;
  font-size: 0.78rem;
  color: #8ba3c0;
  margin-bottom: 0.9rem;
}
.intro-meta span {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

/* Identificação temporária do aluno — nunca é salva no navegador. */
.intro-name {
  width: 100%;
  max-width: 480px;
  margin: 0 auto 0.85rem;
  padding: 0.9rem 1rem;
  border: 1px solid rgba(34, 211, 238, 0.3);
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(17, 24, 39, 0.96), rgba(15, 36, 55, 0.92));
  text-align: left;
  box-shadow: 0 12px 34px rgba(0, 0, 0, 0.2);
}
.intro-name label {
  display: block;
  color: #f0f6ff;
  font-size: 0.9rem;
  font-weight: 800;
  margin-bottom: 0.3rem;
}
.intro-name small {
  display: block;
  color: #8ba3c0;
  font-size: 0.76rem;
  line-height: 1.35;
  margin-bottom: 0.65rem;
}
.intro-name input {
  width: 100%;
  min-height: 46px;
  padding: 0.7rem 0.85rem;
  border: 1px solid rgba(139, 163, 192, 0.4);
  border-radius: 9px;
  background: #08111e;
  color: #fff;
  font: 700 1rem 'Barlow', sans-serif;
  outline: none;
  transition: border-color .2s, box-shadow .2s;
  box-sizing: border-box;
}
.intro-name input::placeholder { color: #64748b; font-weight: 500; }
.intro-name input:focus {
  border-color: #22d3ee;
  box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.14);
}
.intro-name input[aria-invalid="true"] {
  border-color: #fb7185;
  box-shadow: 0 0 0 3px rgba(251, 113, 133, 0.14);
}
.intro-name-error {
  color: #fda4af;
  font-size: 0.78rem;
  font-weight: 700;
  margin: 0.45rem 0 0;
}

/* Botão */
.btn-start {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 0.85rem 2.2rem;
  background: linear-gradient(135deg, #fde047 0%, #facc15 50%, #eab308 100%);
  color: #08111e;
  border: 1px solid rgba(254, 240, 138, 0.6);
  border-radius: 12px;
  font-family: 'Barlow', sans-serif;
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
  box-shadow: 0 8px 25px rgba(250, 204, 21, 0.35);
  transition: all 0.22s cubic-bezier(0.16, 1, 0.3, 1);
  width: 100%;
  max-width: 340px;
  min-height: 48px;
}
.btn-start:hover {
  background: linear-gradient(135deg, #fef08a 0%, #fde047 50%, #facc15 100%);
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 16px 40px rgba(250, 204, 21, 0.5), 0 0 30px rgba(250, 204, 21, 0.35);
  border-color: #fff;
}
.btn-start:active {
  transform: translateY(-1px) scale(1);
  box-shadow: 0 8px 20px rgba(250, 204, 21, 0.3);
}
.btn-start:focus-visible { outline: 3px solid #22d3ee; outline-offset: 4px; }
.btn-start-icon {
  width: 26px;
  height: 26px;
  background: rgba(8, 17, 30, 0.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s ease;
}
.btn-start:hover .btn-start-icon {
  transform: translateX(3px);
}

/* Engine escondida inicialmente */
#engine-root { display: none; }

/* ── Mobile ≤ 520px ─────────────────────────────────────── */
@media (max-width: 520px) {
  #intro-screen {
    padding: 4rem 1rem 2rem;
    justify-content: flex-start;
  }
  .intro-back {
    top: 0.75rem; left: 0.75rem;
    font-size: 0.78rem; padding: 0.3rem 0.6rem;
  }
  .intro-icon {
    width: 56px; height: 56px;
    border-radius: 14px; margin-bottom: 1rem;
  }
  .intro-icon svg { width: 28px; height: 28px; }
  .intro-title { font-size: 1.7rem; margin-bottom: 0.5rem; }
  .intro-desc  { font-size: 0.9rem; margin-bottom: 1.25rem; }
  .intro-rules {
    padding: 1rem; margin-bottom: 1.25rem; border-radius: 10px;
  }
  .intro-rules li { font-size: 0.85rem; }
  .intro-meta {
    gap: 0.75rem; font-size: 0.78rem; margin-bottom: 1.5rem;
  }
  .intro-name { padding: 0.85rem; margin-bottom: 1rem; }
  .btn-start { font-size: 1.05rem; padding: 1rem 1.5rem; max-width: 100%; }
}

/* ── Piloto visual Windows: abertura curta e orientada à ação ── */
#intro-screen {
  position: relative;
  isolation: isolate;
  padding: clamp(3.75rem, 7vh, 4.5rem) 1.5rem clamp(0.75rem, 2vh, 2rem);
  overflow: hidden;
  background:
    radial-gradient(circle at 12% 12%, rgba(14, 165, 233, 0.2), transparent 30%),
    radial-gradient(circle at 88% 78%, rgba(250, 204, 21, 0.12), transparent 28%),
    linear-gradient(145deg, #07101f 0%, #0a1427 58%, #07111f 100%);
}
#intro-screen::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: 0.13;
  background-image:
    linear-gradient(rgba(125, 211, 252, 0.22) 1px, transparent 1px),
    linear-gradient(90deg, rgba(125, 211, 252, 0.22) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(to bottom, black, transparent 82%);
}
.intro-shell {
  width: min(980px, 100%);
  max-height: 100%;
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(340px, 0.88fr);
  gap: 1.25rem;
  align-items: stretch;
}
.intro-hero,
.intro-entry-card {
  position: relative;
  border: 1px solid rgba(125, 211, 252, 0.18);
  border-radius: 24px;
  overflow: hidden;
}
.intro-hero {
  padding: clamp(1.6rem, 4vw, 3rem);
  text-align: left;
  background: linear-gradient(150deg, rgba(13, 38, 68, 0.94), rgba(8, 22, 42, 0.96));
  box-shadow: 0 28px 70px rgba(0, 0, 0, 0.34);
}
.intro-hero::after {
  content: attr(data-watermark);
  position: absolute;
  right: -0.4rem;
  bottom: -2.8rem;
  color: rgba(56, 189, 248, 0.06);
  font-size: clamp(11rem, 24vw, 18rem);
  font-weight: 800;
  line-height: 1;
  pointer-events: none;
}
.intro-logo-row {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 1.4rem;
}
.intro-course-mark {
  width: 58px;
  height: 58px;
  display: grid;
  place-items: center;
  border-radius: 17px;
  color: var(--fix-accent-soft);
  background: linear-gradient(145deg, rgba(var(--fix-accent-rgb), 0.22), rgba(var(--fix-accent-rgb), 0.07));
  border: 1px solid rgba(var(--fix-accent-rgb), 0.3);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.1), 0 12px 30px rgba(14, 165, 233, 0.12);
}
.intro-course-mark svg { width: 30px; height: 30px; fill: currentColor; }
.intro-logo-copy { display: flex; flex-direction: column; gap: 0.1rem; }
.intro-logo-copy strong { font-size: 0.82rem; color: #fff; }
.intro-logo-copy span {
  color: var(--fix-accent);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.intro-hero .intro-title {
  max-width: 560px;
  margin: 0 0 0.8rem;
  font-size: clamp(2.2rem, 5vw, 4rem);
  line-height: 0.98;
  letter-spacing: -0.045em;
}
.intro-hero .intro-title span { color: var(--fix-accent); }
.intro-hero .intro-desc {
  max-width: 520px;
  margin: 0 0 1.35rem;
  color: #b7c9df;
  font-size: 1rem;
  line-height: 1.5;
}
.intro-missions {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.6rem;
}
.intro-mission {
  min-height: 84px;
  padding: 0.8rem;
  border: 1px solid rgba(125, 211, 252, 0.15);
  border-radius: 14px;
  background: rgba(4, 14, 29, 0.48);
}
.intro-mission b { display: block; color: #facc15; font-size: 1.15rem; margin-bottom: 0.15rem; }
.intro-mission span { display: block; color: #9fb5cf; font-size: 0.75rem; line-height: 1.3; }
.intro-random-note {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin: 1rem 0 0;
  color: #bae6fd;
  font-size: 0.78rem;
  font-weight: 600;
}
.intro-random-note i {
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: rgba(34, 211, 238, 0.12);
  color: #22d3ee;
  font-style: normal;
}
.intro-entry-card {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(1.4rem, 3.2vw, 2.25rem);
  text-align: left;
  background: rgba(13, 24, 43, 0.95);
  box-shadow: 0 28px 70px rgba(0, 0, 0, 0.3);
}
.intro-entry-kicker {
  color: #facc15;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.intro-entry-card h2 {
  margin: 0.35rem 0 0.35rem;
  color: #fff;
  font-size: clamp(1.55rem, 3.4vw, 2.1rem);
  line-height: 1.08;
}
.intro-entry-card > p {
  margin: 0 0 1rem;
  color: #8fa8c4;
  font-size: 0.85rem;
  line-height: 1.4;
}
.intro-entry-card .intro-name {
  max-width: none;
  margin: 0 0 0.8rem;
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
}
.intro-entry-card .intro-name label { font-size: 0.8rem; color: #bae6fd; }
.intro-entry-card .intro-name small { margin-bottom: 0.55rem; }
.intro-entry-card .intro-name input {
  min-height: 54px;
  padding: 0.8rem 1rem;
  border-radius: 13px;
  font-size: 1.05rem;
  background: rgba(3, 11, 24, 0.86);
}
.intro-reward-preview {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 1rem;
  padding: 0.75rem 0.85rem;
  border: 1px dashed rgba(250, 204, 21, 0.3);
  border-radius: 13px;
  background: rgba(250, 204, 21, 0.05);
}
.intro-reward-preview span { color: #a8bdd5; font-size: 0.76rem; }
.intro-reward-preview strong { color: #facc15; font-size: 0.85rem; white-space: nowrap; }
.intro-entry-card .btn-start { max-width: none; min-height: 54px; }
.intro-privacy {
  display: block;
  margin-top: 0.8rem;
  color: #7187a2;
  font-size: 0.72rem;
  text-align: center;
}

/* Em notebooks e navegadores baixos, reduz apenas os respiros da abertura. */
@media (min-width: 821px) and (max-height: 740px) {
  #intro-screen { padding: 3.45rem 1rem 0.65rem; }
  .intro-shell { width: min(990px, 100%); gap: 0.9rem; }
  .intro-hero { padding: 1.35rem 1.55rem; }
  .intro-entry-card { padding: 1.35rem 1.55rem; }
  .intro-logo-row { margin-bottom: 0.7rem; }
  .intro-course-mark { width: 48px; height: 48px; border-radius: 14px; }
  .intro-course-mark svg { width: 25px; height: 25px; }
  .intro-hero .intro-title { margin-bottom: 0.55rem; font-size: clamp(2.4rem, 4.4vw, 3.35rem); }
  .intro-hero .intro-desc { margin-bottom: 0.8rem; font-size: 0.9rem; line-height: 1.35; }
  .intro-mission { min-height: 65px; padding: 0.6rem 0.7rem; }
  .intro-random-note { margin-top: 0.65rem; font-size: 0.7rem; }
  .intro-entry-card h2 { font-size: 1.7rem; }
  .intro-entry-card > p { margin-bottom: 0.65rem; }
  .intro-entry-card .intro-name { margin-bottom: 0.65rem; }
  .intro-entry-card .intro-name small { margin-bottom: 0.4rem; }
  .intro-entry-card .intro-name input { min-height: 48px; }
  .intro-reward-preview { margin-bottom: 0.65rem; padding: 0.6rem 0.7rem; }
  .intro-entry-card .btn-start { min-height: 49px; }
  .intro-privacy { margin-top: 0.5rem; font-size: 0.66rem; }
}

@media (max-width: 820px) {
  #intro-screen { padding: 3.7rem 1rem 0.8rem; justify-content: center; }
  .intro-shell { grid-template-columns: 1fr; max-width: 620px; gap: 0.8rem; }
  .intro-hero { padding: 1.15rem 1.3rem; }
  .intro-hero .intro-title { font-size: clamp(2rem, 8vw, 2.8rem); }
  .intro-logo-row { margin-bottom: 0.75rem; }
  .intro-hero .intro-desc { margin-bottom: 0.75rem; }
  .intro-mission { min-height: 58px; padding: 0.55rem 0.65rem; }
  .intro-random-note { margin-top: 0.6rem; }
  .intro-entry-card { padding: 1.1rem 1.25rem; }
}
@media (max-width: 520px) {
  #intro-screen { padding: 3.3rem 0.7rem 0.55rem; }
  .intro-hero, .intro-entry-card { border-radius: 18px; }
  .intro-hero { padding: 0.85rem 0.95rem; }
  .intro-logo-row { margin-bottom: 0.45rem; }
  .intro-course-mark { width: 40px; height: 40px; border-radius: 12px; }
  .intro-course-mark svg { width: 22px; height: 22px; }
  .intro-logo-copy strong { font-size: 0.72rem; }
  .intro-logo-copy span { font-size: 0.58rem; }
  .intro-hero .intro-title { font-size: clamp(1.7rem, 8vw, 2.15rem); margin-bottom: 0.35rem; }
  .intro-hero .intro-desc { font-size: 0.78rem; line-height: 1.3; margin-bottom: 0.55rem; }
  .intro-missions { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0.35rem; }
  .intro-mission { min-height: 48px; display: block; padding: 0.45rem; }
  .intro-mission b { margin-bottom: 0.05rem; font-size: 0.9rem; }
  .intro-mission span { font-size: 0.62rem; }
  .intro-random-note { margin-top: 0.45rem; font-size: 0.62rem; }
  .intro-random-note i { width: 21px; height: 21px; }
  .intro-entry-card { padding: 0.85rem 0.95rem; }
  .intro-entry-card h2 { margin-top: 0.2rem; font-size: 1.35rem; }
  .intro-entry-card > p { margin-bottom: 0.55rem; font-size: 0.74rem; }
  .intro-entry-card .intro-name { margin-bottom: 0.55rem; }
  .intro-entry-card .intro-name small { margin-bottom: 0.3rem; font-size: 0.68rem; }
  .intro-entry-card .intro-name input { min-height: 44px; font-size: 0.95rem; }
  .intro-reward-preview { margin-bottom: 0.55rem; padding: 0.5rem 0.6rem; }
  .intro-reward-preview span { font-size: 0.66rem; }
  .intro-reward-preview strong { font-size: 0.73rem; }
  .intro-entry-card .btn-start { min-height: 46px; font-size: 0.9rem; }
  .intro-privacy { margin-top: 0.45rem; font-size: 0.62rem; }
}

@media (max-width: 520px) and (max-height: 720px) {
  #intro-screen { padding-top: 3rem; }
  .intro-random-note { display: none; }
  .intro-hero .intro-desc { display: none; }
}