/* Layout pensado para TV (vista de ~3 m, navegação por D-pad).
   Navegadores de TV costumam reportar ~960x540 px CSS, então os
   tamanhos escalam com a largura da tela (vw) e têm valor de reserva
   para navegadores antigos que não entendem clamp(). */

:root {
  --bg: #0b0d12;
  --surface: #151924;
  --surface-2: #1d2230;
  --text: #ffffff;
  --muted: #b8c0d0;
  --accent: #1a73ff;
  --accent-strong: #0b5ce0;
  --focus: #ffd400;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  background-color: var(--bg);
  background-image: radial-gradient(circle at 20% 15%, #16233f 0%, var(--bg) 55%);
  color: var(--text);
  font-family: "Segoe UI", Roboto, Arial, Helvetica, sans-serif;
  font-size: 18px;
  font-size: clamp(16px, 1.45vw, 30px);
  line-height: 1.35;
  overflow-wrap: break-word;
}

.layout {
  display: grid;
  grid-template-columns: 1fr;
  grid-gap: 2.5em;
  align-items: center;
  max-width: 1600px;
  min-height: 100vh;
  margin: 0 auto;
  padding: 2em 16px;
}

/* TV e telas largas: duas colunas, tudo visível sem rolar */
@media (min-width: 800px) {
  .layout {
    grid-template-columns: 1.1fr 1fr;
    grid-gap: 4vw;
    padding: 4vh 5vw;
  }
}

/* ---------- Coluna principal ---------- */

.brand {
  margin: 0 0 0.4em;
  color: #4d94ff;
  font-size: 1.3em;
  font-weight: 700;
  letter-spacing: 0.02em;
}

h1 {
  margin: 0 0 0.35em;
  font-size: 2.6em;
  line-height: 1.1;
}

.lead {
  margin: 0 0 1.6em;
  color: var(--muted);
  font-size: 1.15em;
}

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

.download-btn {
  display: inline-block;
  padding: 0.7em 1.6em;
  border: 0.18em solid transparent;
  border-radius: 0.6em;
  background-color: var(--accent);
  color: #ffffff;
  font-size: 1.6em;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
  box-shadow: 0 0.4em 1.2em rgba(26, 115, 255, 0.35);
  transition: transform 0.15s ease, background-color 0.15s ease, box-shadow 0.15s ease;
}

.download-btn .icon {
  width: 1em;
  height: 1em;
  margin-right: 0.35em;
  vertical-align: -0.12em;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* Foco do controle remoto: borda amarela bem visível + leve aumento */
.download-btn:focus,
.download-btn:hover {
  outline: none;
  border-color: var(--focus);
  background-color: var(--accent-strong);
  transform: scale(1.08);
  box-shadow: 0 0 0 0.25em rgba(255, 212, 0, 0.35), 0 0.5em 1.6em rgba(26, 115, 255, 0.5);
}

.download-btn:active {
  transform: scale(1.02);
}

.meta {
  margin: 1.6em 0 0;
  color: var(--muted);
  font-size: 0.85em;
}

/* ---------- Passo a passo ---------- */

.steps {
  padding: 1.4em 1.6em;
  border-radius: 0.8em;
  background-color: var(--surface);
}

.steps h2 {
  margin: 0 0 0.8em;
  font-size: 1.35em;
}

.steps ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

.steps li {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-gap: 0.8em;
  align-items: start;
  margin-bottom: 0.8em;
}

.steps li:last-child {
  margin-bottom: 0;
}

.steps .num {
  display: block;
  width: 1.8em;
  height: 1.8em;
  border-radius: 50%;
  background-color: var(--accent);
  font-weight: 700;
  line-height: 1.8em;
  text-align: center;
}

.steps p,
.tip p {
  margin: 0.15em 0 0;
  color: var(--muted);
  font-size: 0.9em;
}

.steps em,
.tip em {
  color: var(--text);
  font-style: normal;
  font-weight: 600;
}

.tip {
  margin-top: 1.2em;
  padding: 0.9em 1.1em;
  border-left: 0.25em solid var(--focus);
  border-radius: 0.4em;
  background-color: var(--surface-2);
}

/* Celular: botão ocupa a largura toda */
@media (max-width: 480px) {
  h1 {
    font-size: 2em;
  }

  .download-btn {
    display: block;
    text-align: center;
  }

  .download-btn:focus,
  .download-btn:hover {
    transform: none;
  }
}