/* FRONTERA — dystopian border-zone download hub */

:root {
  --bg-deep: #0a0706;
  --bg-panel: #12100e;
  --bg-elevated: #1a1612;
  --ink: #e8ddd0;
  --ink-muted: #9a8b7a;
  --blood: #8b1e14;
  --blood-bright: #c42b1a;
  --ember: #d4622a;
  --gold: #c9a227;
  --gold-dim: #7a6520;
  --teal-neon: #1a8a7a;
  --barrier-yellow: #d4a017;
  --barrier-black: #0d0c0a;
  --glow: rgba(196, 43, 26, 0.35);
  --font-display: "Bebas Neue", sans-serif;
  --font-body: "Cormorant Garamond", Georgia, serif;
  --font-mono: "Share Tech Mono", monospace;
  --space: clamp(1rem, 3vw, 2rem);
  --max: 72rem;
  --radius: 2px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: clamp(1.05rem, 1.8vw, 1.2rem);
  line-height: 1.55;
  color: var(--ink);
  background-color: var(--bg-deep);
  background-image:
    radial-gradient(ellipse 120% 80% at 50% -20%, rgba(196, 43, 26, 0.18), transparent 55%),
    radial-gradient(ellipse 60% 40% at 100% 50%, rgba(212, 98, 42, 0.08), transparent),
    linear-gradient(180deg, #0f0c0a 0%, var(--bg-deep) 40%, #060504 100%);
}

/* overlays */
.grain {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 1000;
  opacity: 0.07;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.scanlines {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 999;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.03) 2px,
    rgba(0, 0, 0, 0.03) 4px
  );
}

.vignette {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 998;
  box-shadow: inset 0 0 12rem rgba(0, 0, 0, 0.65);
}

/* papel picado strips */
.papel {
  position: absolute;
  top: 0;
  width: 4rem;
  height: 100%;
  opacity: 0.12;
  background: repeating-linear-gradient(
    180deg,
    var(--blood) 0 8px,
    transparent 8px 16px,
    var(--ember) 16px 24px,
    transparent 24px 32px,
    var(--gold) 32px 40px,
    transparent 40px 48px
  );
  mask-image: linear-gradient(180deg, black 0%, transparent 100%);
  clip-path: polygon(
    0 0, 100% 0, 100% 4%,
    85% 6%, 100% 8%, 90% 12%, 100% 16%,
    80% 20%, 100% 24%, 88% 28%, 100% 32%,
    82% 36%, 100% 40%, 90% 44%, 100% 48%,
    85% 52%, 100% 56%, 88% 60%, 100% 64%,
    80% 68%, 100% 72%, 92% 76%, 100% 80%,
    85% 84%, 100% 88%, 90% 92%, 100% 96%,
    75% 98%, 100% 100%, 0 100%
  );
}

.papel--left { left: 0; }
.papel--right { right: 0; transform: scaleX(-1); }

/* header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(201, 162, 39, 0.2);
  background: rgba(10, 7, 6, 0.88);
  backdrop-filter: blur(8px);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.75rem 1.5rem;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0.75rem var(--space);
}

.nav__badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  color: var(--blood-bright);
  border: 1px solid var(--blood);
  padding: 0.25rem 0.5rem;
  animation: flicker 4s infinite;
}

.nav__link {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-muted);
  text-decoration: none;
  transition: color 0.2s;
}

.nav__link:hover {
  color: var(--gold);
}

@keyframes flicker {
  0%, 95%, 100% { opacity: 1; }
  96% { opacity: 0.7; }
  97% { opacity: 1; }
  98% { opacity: 0.5; }
}

/* hero */
.hero {
  position: relative;
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(3rem, 10vw, 6rem) var(--space) 4rem;
  text-align: center;
}

.hero__barrier {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 6px;
  background: repeating-linear-gradient(
    90deg,
    var(--barrier-yellow) 0,
    var(--barrier-yellow) 24px,
    var(--barrier-black) 24px,
    var(--barrier-black) 48px
  );
  opacity: 0.7;
}

.hero__tagline {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.25em;
  color: var(--teal-neon);
  margin: 0 0 0.5rem;
  text-transform: lowercase;
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(4.5rem, 18vw, 9rem);
  font-weight: 400;
  letter-spacing: 0.06em;
  line-height: 0.9;
  margin: 0;
  color: var(--ink);
  text-shadow:
    0 0 40px var(--glow),
    2px 2px 0 var(--blood);
  position: relative;
}

.hero__title::before,
.hero__title::after {
  content: attr(data-text);
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  overflow: hidden;
  clip-path: inset(0);
}

.hero__title::before {
  color: var(--blood-bright);
  animation: glitch-1 5s infinite;
  clip-path: polygon(0 0, 100% 0, 100% 42%, 0 42%);
}

.hero__title::after {
  color: var(--ember);
  animation: glitch-2 5s infinite;
  clip-path: polygon(0 58%, 100% 58%, 100% 100%, 0 100%);
}

@keyframes glitch-1 {
  0%, 92%, 100% { transform: translate(0); }
  93% { transform: translate(-3px, 1px); }
  95% { transform: translate(3px, -1px); }
}

@keyframes glitch-2 {
  0%, 90%, 100% { transform: translate(0); }
  91% { transform: translate(2px, 0); }
  94% { transform: translate(-2px, 1px); }
}

.hero__subtitle {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 600;
  margin: 1rem 0 0.5rem;
  color: var(--ink);
}

.hero__subtitle-es {
  font-style: italic;
  font-weight: 400;
  color: var(--gold);
  display: inline-block;
  margin-top: 0.25rem;
}

.hero__desc {
  max-width: 36rem;
  margin: 1.25rem auto 2rem;
  color: var(--ink-muted);
  font-size: 1.05rem;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin-bottom: 3rem;
}

.hero__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(8rem, 1fr));
  gap: 1.5rem;
  max-width: 32rem;
  margin: 0 auto;
  padding: 1.5rem;
  border: 1px solid rgba(201, 162, 39, 0.25);
  background: rgba(26, 22, 18, 0.6);
}

.hero__stats dt {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold-dim);
  margin: 0 0 0.25rem;
}

.hero__stats dd {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.35rem;
  letter-spacing: 0.04em;
}

/* buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 0.85rem 1.75rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, transform 0.15s;
}

.btn:active {
  transform: translateY(1px);
}

.btn--primary {
  color: var(--bg-deep);
  background: linear-gradient(180deg, var(--ember) 0%, var(--blood-bright) 100%);
  border-color: var(--gold);
  box-shadow: 0 4px 24px var(--glow);
}

.btn--primary:hover {
  filter: brightness(1.1);
}

.btn--ghost {
  color: var(--ink);
  background: transparent;
  border-color: var(--ink-muted);
}

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

.btn--secondary {
  color: var(--gold);
  background: var(--bg-elevated);
  border-color: var(--gold-dim);
  margin-top: 1rem;
}

.btn--download {
  width: 100%;
  flex-direction: column;
  padding: 1rem;
  background: var(--bg-deep);
  border-color: var(--blood);
  color: var(--ink);
}

.btn--download:hover {
  background: var(--blood);
  border-color: var(--ember);
}

.btn--download.is-missing {
  opacity: 0.45;
  pointer-events: none;
  border-style: dashed;
}

/* panels */
main {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--space) 4rem;
}

.panel {
  margin-bottom: 4rem;
  padding: 2rem;
  background: var(--bg-panel);
  border: 1px solid rgba(139, 30, 20, 0.35);
  box-shadow:
    inset 0 1px 0 rgba(201, 162, 39, 0.08),
    0 8px 32px rgba(0, 0, 0, 0.4);
  position: relative;
}

.panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--blood), var(--gold), var(--ember));
}

.panel--dim {
  background: rgba(18, 16, 14, 0.7);
}

.panel__header {
  margin-bottom: 2rem;
}

.panel__index {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--blood-bright);
  letter-spacing: 0.2em;
}

.panel__title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 3.5rem);
  letter-spacing: 0.05em;
  margin: 0.25rem 0 0.5rem;
  color: var(--ink);
}

.panel__lead {
  margin: 0;
  color: var(--ink-muted);
  max-width: 40rem;
}

.panel__lead code,
.panel__foot code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  color: var(--ember);
  background: rgba(0, 0, 0, 0.35);
  padding: 0.1em 0.35em;
}

.panel__foot {
  margin: 1.5rem 0 0;
  font-size: 0.95rem;
  color: var(--ink-muted);
}

/* cards */
.cards {
  display: grid;
  gap: 1.5rem;
}

.cards--launcher {
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
}

.card {
  padding: 1.5rem;
  background: var(--bg-elevated);
  border: 1px solid rgba(201, 162, 39, 0.15);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.card__icon {
  width: 2.5rem;
  height: 2.5rem;
  color: var(--gold);
  margin-bottom: 0.5rem;
}

.card__icon svg {
  width: 100%;
  height: 100%;
}

.card__name {
  font-family: var(--font-display);
  font-size: 1.75rem;
  letter-spacing: 0.04em;
  margin: 0;
}

.card__meta,
.card__note {
  font-size: 0.9rem;
  color: var(--ink-muted);
  margin: 0;
}

.card__version {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--teal-neon);
  margin: 0;
}

.card__download {
  margin-top: auto;
}

.card__size {
  font-size: 0.65rem;
  color: var(--ink-muted);
  letter-spacing: 0.05em;
}

/* callout */
.callout {
  margin-top: 1.5rem;
  padding: 1rem 1.25rem;
  font-size: 0.95rem;
  border-left: 4px solid var(--barrier-yellow);
  background: rgba(212, 160, 23, 0.08);
  color: var(--ink-muted);
}

.callout strong {
  color: var(--barrier-yellow);
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
}

/* build banner */
.build-banner {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
  padding: 1.25rem;
  background: var(--bg-deep);
  border: 1px dashed rgba(26, 138, 122, 0.4);
}

.build-banner__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.build-banner__value {
  font-family: var(--font-display);
  font-size: 1.5rem;
  letter-spacing: 0.04em;
  color: var(--teal-neon);
}

/* file table */
.file-table-wrap {
  overflow-x: auto;
  border: 1px solid rgba(139, 30, 20, 0.3);
}

.file-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.file-table th,
.file-table td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.file-table th {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold-dim);
  background: rgba(0, 0, 0, 0.25);
}

.file-table td {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-muted);
}

.file-table td:first-child {
  color: var(--ink);
  word-break: break-all;
}

.file-table__hash {
  max-width: 8rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-table__empty td {
  text-align: center;
  font-style: italic;
  padding: 2rem;
}

.file-table a {
  color: var(--ember);
  text-decoration: none;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.file-table a:hover {
  color: var(--gold);
}

/* tree + checklist */
.tree {
  margin: 0 0 1.5rem;
  padding: 1.25rem;
  overflow-x: auto;
  background: var(--bg-deep);
  border: 1px solid rgba(201, 162, 39, 0.15);
}

.tree code {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--ink-muted);
}

.checklist {
  margin: 0;
  padding-left: 1.25rem;
  color: var(--ink-muted);
}

.checklist li {
  margin-bottom: 0.5rem;
}

.checklist code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  color: var(--ember);
}

.steps {
  margin: 0;
  padding-left: 1.35rem;
  color: var(--ink-muted);
}

.steps li {
  margin-bottom: 0.75rem;
  padding-left: 0.25rem;
}

.steps strong {
  color: var(--ink);
}

/* footer */
.site-footer {
  text-align: center;
  padding: 2rem var(--space) 3rem;
  border-top: 1px solid rgba(139, 30, 20, 0.3);
  background: #060504;
}

.site-footer__line {
  font-family: var(--font-display);
  font-size: 1.25rem;
  letter-spacing: 0.1em;
  margin: 0 0 0.5rem;
}

.site-footer__line span {
  color: var(--blood-bright);
}

.site-footer__legal {
  font-size: 0.8rem;
  color: var(--ink-muted);
  max-width: 32rem;
  margin: 0 auto;
}

/* responsive */
@media (max-width: 640px) {
  .papel {
    width: 2rem;
    opacity: 0.08;
  }

  .nav__badge {
    width: 100%;
    text-align: center;
  }

  .panel {
    padding: 1.25rem;
  }

  .file-table th:nth-child(3),
  .file-table td:nth-child(3) {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero__title::before,
  .hero__title::after,
  .nav__badge {
    animation: none;
  }

  html {
    scroll-behavior: auto;
  }
}