/* Página de descargas de UbuIPTV: oscura como la aplicación, con sus morados,
   y la tipografía del sistema (SF Pro en un Mac). Sin recursos externos. */

:root {
  color-scheme: dark;
  --bg: #08070e;
  --bg-raised: #12111c;
  --surface: rgba(255, 255, 255, 0.045);
  --border: rgba(255, 255, 255, 0.09);
  --text: #f5f4fb;
  --muted: #a6a2bd;
  --faint: #6f6b86;
  --accent: #8f72ff;
  --accent-strong: #a48bff;
  --pink: #d74ea8;
  --radius-window: 14px;
  --radius-card: 20px;
  --content: 1180px;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 72px; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  margin: 0;
  background:
    radial-gradient(1100px 620px at 50% -140px, rgba(124, 92, 255, 0.28), transparent 70%),
    radial-gradient(700px 420px at 85% 38%, rgba(215, 78, 168, 0.08), transparent 70%),
    var(--bg);
  color: var(--text);
  font-size: 17px;
  line-height: 1.5;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--accent-strong); text-decoration: none; }
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 2px solid var(--accent-strong);
  outline-offset: 3px;
  border-radius: 8px;
}

h1, h2, h3 {
  text-wrap: balance;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  margin: 0;
  letter-spacing: -0.022em;
}

code {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.88em;
}

/* Navegación translúcida, como la de una página de Apple. */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px max(16px, calc((100vw - var(--content)) / 2));
  background: rgba(8, 7, 14, 0.72);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  border-bottom: 1px solid var(--border);
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 600;
  font-size: 17px;
}
.nav-brand img { width: 28px; height: 28px; }
.nav-links { display: flex; align-items: center; gap: 22px; font-size: 14px; }
.nav-links a { color: var(--muted); }
.nav-links a:hover { color: var(--text); }
.nav-links .nav-cta {
  color: var(--text);
  background: var(--accent);
  padding: 5px 14px;
  border-radius: 999px;
}
.nav-links .nav-cta:hover { background: var(--accent-strong); }

/* Portada */
.hero {
  max-width: 820px;
  margin: 0 auto;
  padding: 72px 16px 40px;
  text-align: center;
}
.hero-icon {
  width: 132px;
  height: 132px;
  margin: 0 auto 26px;
  filter: drop-shadow(0 24px 48px rgba(124, 92, 255, 0.45));
}
.eyebrow {
  margin: 0 0 10px;
  color: var(--accent-strong);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.01em;
}
.hero h1 {
  font-size: clamp(56px, 11vw, 104px);
  line-height: 1;
  font-weight: 700;
  letter-spacing: -0.04em;
  background: linear-gradient(180deg, #ffffff 30%, #c9bfff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.lead {
  text-wrap: balance;
  margin: 18px auto 0;
  max-width: 640px;
  color: var(--muted);
  font-size: clamp(21px, 3vw, 28px);
  line-height: 1.3;
  font-weight: 500;
  letter-spacing: -0.012em;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 34px;
}
.fineprint { margin: 18px 0 0; color: var(--faint); font-size: 14px; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 24px;
  border-radius: 999px;
  font-size: 17px;
  font-weight: 600;
  transition: background-color 0.15s ease, transform 0.15s ease;
}
.button-primary { background: var(--accent); color: #fff; }
.button-primary:hover { background: var(--accent-strong); }
.button-quiet { color: var(--text); background: var(--surface); box-shadow: inset 0 0 0 1px var(--border); }
.button-quiet:hover { background: rgba(255, 255, 255, 0.08); }
.button[aria-disabled="true"] {
  background: var(--surface);
  color: var(--faint);
  box-shadow: inset 0 0 0 1px var(--border);
  pointer-events: none;
}

/* Las capturas, dentro de su ventana de macOS. */
.showcase {
  max-width: var(--content);
  margin: 12px auto 0;
  padding: 0 16px;
}
.window {
  border-radius: var(--radius-window);
  overflow: hidden;
  background: #0b0b12;
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.1),
    0 40px 120px -24px rgba(0, 0, 0, 0.85),
    0 12px 40px -12px rgba(124, 92, 255, 0.25);
}

/* Funciones: seis líneas, sin capturas propias */
.features {
  max-width: 960px;
  margin: 88px auto 0;
  padding: 0 16px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 34px 40px;
}
.feature-item svg {
  width: 26px;
  height: 26px;
  fill: none;
  stroke: var(--accent-strong);
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
  margin-bottom: 10px;
}
.feature-item h2 { font-size: 17px; font-weight: 600; letter-spacing: -0.01em; }
.feature-item p { margin: 4px 0 0; color: var(--muted); font-size: 15px; }

/* Descargas */
.downloads {
  max-width: var(--content);
  margin: 110px auto 0;
  padding: 0 16px;
  text-align: center;
}
.section-title { font-size: clamp(32px, 4.6vw, 44px); font-weight: 700; }
.section-lead { color: var(--muted); font-size: 17px; margin: 10px 0 36px; }
.download-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  text-align: left;
}
.download {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 24px;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
}
.download.is-current {
  border-color: rgba(164, 139, 255, 0.55);
  box-shadow: 0 0 0 1px rgba(164, 139, 255, 0.25), 0 24px 60px -24px rgba(124, 92, 255, 0.45);
}
.platform-icon { width: 30px; height: 30px; fill: var(--text); margin-bottom: 14px; }
.download h3 { font-size: 22px; }
.requirements { color: var(--muted); font-size: 14px; margin: 4px 0 18px; min-height: 2.9em; }
.download .button { width: 100%; }
.size { margin: 10px 0 0; min-height: 1.4em; color: var(--faint); font-size: 14px; }

.install { margin-top: 14px; width: 100%; font-size: 15px; color: var(--muted); }
.install summary { cursor: pointer; color: var(--accent-strong); font-weight: 500; }
.install ol { padding-left: 1.2em; margin: 12px 0 0; }
.install li + li { margin-top: 6px; }
.install strong { color: var(--text); font-weight: 600; }
.install p { margin: 12px 0 8px; }
.command {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 8px 8px 12px;
  background: #050409;
  border: 1px solid var(--border);
  border-radius: 10px;
}
.command code { flex: 1; color: var(--text); overflow-x: auto; white-space: nowrap; }
.copy {
  flex: none;
  border: 0;
  border-radius: 7px;
  padding: 5px 10px;
  background: rgba(255, 255, 255, 0.1);
  color: var(--text);
  font: inherit;
  font-size: 13px;
  cursor: pointer;
}
.copy:hover { background: rgba(255, 255, 255, 0.16); }

.notice {
  margin: 36px auto 0;
  max-width: 640px;
  color: var(--faint);
  font-size: 15px;
}

.footer {
  max-width: var(--content);
  margin: 96px auto 0;
  padding: 24px 16px 40px;
  border-top: 1px solid var(--border);
  color: var(--faint);
  font-size: 13px;
}
.footer p { margin: 0 0 10px; }
.footer summary { cursor: pointer; }
.footer details p { margin-top: 10px; max-width: 760px; }

@media (max-width: 900px) {
  .features { grid-template-columns: repeat(2, 1fr); gap: 28px 28px; margin-top: 64px; }
  .download-grid { grid-template-columns: 1fr; }
  .downloads { margin-top: 88px; }
  .requirements { min-height: 0; }
}

@media (max-width: 520px) {
  .nav-links a:not(.nav-cta) { display: none; }
  .hero { padding-top: 48px; }
  .hero-icon { width: 104px; height: 104px; }
  .hero-actions .button { width: 100%; }
  :root { --radius-window: 9px; }
}