/* ==========================================================================
   DOWNLOAD PAGE — download.html
   ========================================================================== */

.dl-hero {
  position: relative;
  padding-top: calc(var(--nav-h) + clamp(2rem, 5vw, 3.5rem));
  padding-bottom: clamp(2.5rem, 5vw, 4.5rem);
  overflow: hidden;
  isolation: isolate;
  border-bottom: 1px solid var(--color-border);
}

.dl-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(ellipse 52% 62% at 76% 26%, rgba(212, 175, 55, 0.2), transparent 62%),
    linear-gradient(180deg, #101A38 0%, var(--color-bg) 78%);
}

.dl-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(212, 175, 55, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(212, 175, 55, 0.05) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(ellipse 88% 78% at 50% 34%, #000 12%, transparent 76%);
  mask-image: radial-gradient(ellipse 88% 78% at 50% 34%, #000 12%, transparent 76%);
}

.dl-hero__inner {
  display: grid;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
  grid-template-columns: 1fr;
}

@media (min-width: 980px) { .dl-hero__inner { grid-template-columns: 1.05fr 0.95fr; } }

.dl-hero__copy { max-width: 640px; }
.dl-hero h1 { margin-bottom: var(--space-5); }
.dl-hero .lead { margin-bottom: var(--space-7); }

/* Download stage — centred so the floating chips hang off the phone bezel */
.dl-stage {
  position: relative;
  display: flex;
  justify-content: center;
}

.dl-stage .device { --device-w: clamp(240px, 26vw, 320px); }

.dl-specs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 132px), 1fr));
  gap: var(--space-3);
  margin-top: var(--space-7);
  padding-top: var(--space-7);
  border-top: 1px solid rgba(36, 48, 107, 0.7);
}

.dl-spec { text-align: left; }
.dl-spec dt { font-size: var(--text-2xs); letter-spacing: var(--tracking-wider); text-transform: uppercase; color: var(--color-text-muted); margin-bottom: var(--space-2); }
.dl-spec dd { font-size: var(--text-sm); font-weight: 700; color: var(--color-white); }

/* --------------------------------------------------------------------------
   INSTALL STEPS — vertical vault ladder
   -------------------------------------------------------------------------- */

.install-steps { position: relative; display: grid; gap: var(--space-5); counter-reset: istep; }

@media (min-width: 760px) {
  .install-steps::before {
    content: "";
    position: absolute;
    left: 31px;
    top: 34px;
    bottom: 34px;
    width: 1px;
    background: repeating-linear-gradient(180deg, rgba(212, 175, 55, 0.5) 0 8px, transparent 8px 16px);
  }
}

.install-step {
  position: relative;
  counter-increment: istep;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: linear-gradient(160deg, var(--color-surface) 0%, rgba(11, 18, 38, 0.94) 100%);
  box-shadow: var(--shadow-card);
  transition: transform var(--t-normal), border-color var(--t-normal), box-shadow var(--t-normal);
}

@media (min-width: 760px) {
  .install-step { grid-template-columns: 64px 1fr; gap: var(--space-6); align-items: start; padding: var(--space-7); }
}

.install-step:hover { transform: translateX(6px); border-color: var(--color-border-gold); box-shadow: var(--shadow-card-hover); }

.install-step::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: var(--foil-edge);
  opacity: 0.6;
}

.install-step__num {
  display: grid;
  place-items: center;
  width: 64px; height: 64px;
  border-radius: var(--radius-full);
  background: radial-gradient(circle at 34% 28%, var(--color-surface-3), var(--color-bg-deep));
  border: 1px solid var(--color-border-gold);
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-gold);
  position: relative;
  z-index: 1;
  flex-shrink: 0;
  transition: box-shadow var(--t-normal), transform 620ms var(--ease-vault);
}

.install-step__num::after { content: counter(istep, decimal-leading-zero); }

.install-step:hover .install-step__num { box-shadow: var(--shadow-gold-glow); transform: rotateY(360deg); }

.install-step h3 { font-family: var(--font-body); font-size: var(--text-xl); margin-bottom: var(--space-3); }
.install-step p { font-size: var(--text-sm); line-height: var(--leading-relaxed); }
.install-step .callout { margin-top: var(--space-4); }

.install-step__hint {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-4);
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-full);
  background: rgba(212, 175, 55, 0.1);
  border: 1px solid var(--color-border-gold);
  font-size: var(--text-2xs);
  font-weight: 700;
  letter-spacing: var(--tracking-wide);
  color: var(--color-gold);
}

.install-step__hint svg { width: 13px; height: 13px; }

/* --------------------------------------------------------------------------
   PLATFORM CARDS
   -------------------------------------------------------------------------- */

.platform-grid { display: grid; gap: var(--space-6); grid-template-columns: 1fr; }

@media (min-width: 860px) { .platform-grid { grid-template-columns: repeat(3, 1fr); } }

.platform-card { text-align: center; display: flex; flex-direction: column; align-items: center; }
.platform-card .medallion { margin-inline: auto; }
.platform-card .card-text { flex: 1; }
.platform-card .btn { margin-top: var(--space-6); }

.platform-card__os {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  color: var(--color-white);
  margin-bottom: var(--space-2);
}

.platform-card__req { font-size: var(--text-2xs); letter-spacing: var(--tracking-wide); text-transform: uppercase; color: var(--color-gold); margin-bottom: var(--space-4); }

/* Update log */
.changelog { display: grid; gap: var(--space-4); }

.changelog__row {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: 1fr;
  padding: var(--space-5) var(--space-6);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: rgba(18, 28, 58, 0.45);
}

@media (min-width: 760px) { .changelog__row { grid-template-columns: 148px 1fr; gap: var(--space-6); align-items: baseline; } }

.changelog__ver { font-family: var(--font-display); font-size: var(--text-lg); color: var(--color-gold); }
.changelog__date { font-size: var(--text-2xs); color: var(--color-text-muted); display: block; margin-top: var(--space-1); }
.changelog__list { display: grid; gap: var(--space-2); }
.changelog__list li { font-size: var(--text-sm); position: relative; padding-left: var(--space-5); }
.changelog__list li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.62em;
  width: 6px; height: 6px;
  background: var(--color-gold-dim);
  transform: rotate(45deg);
}