/* ────────────────────────────────────────────────────────────────────────
   Rusted PackFile Manager — landing page
   Theme: dark slate base with parchment / aged-gold accents.
   ──────────────────────────────────────────────────────────────────────── */

:root {
  /* Palette */
  --bg:            #14110d;            /* charred wood */
  --bg-elev:       #1c1812;            /* slightly lighter panels */
  --bg-alt:        #0f0d0a;            /* deepest section */
  --ink:           #e9e0cf;            /* parchment text */
  --ink-soft:      #b9ad94;            /* secondary text */
  --ink-faint:     #7a7160;
  --rule:          #2a2418;            /* hairline borders */
  --gold:          #c8a85a;            /* aged gold, primary accent */
  --gold-bright:   #e6c878;            /* hover accent */
  --gold-dim:      #8a7438;
  --copper:        #b06a3b;            /* secondary accent for code etc. */
  --danger:        #c25a4a;

  /* Type */
  --font-sans:     "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-display:  "Trajan Pro", "Cinzel", "Inter", serif;
  --font-mono:     "JetBrains Mono", "Fira Mono", "SF Mono", Consolas, monospace;

  /* Layout */
  --maxw:          1140px;
  --rad:           4px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

body {
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(200, 168, 90, 0.06), transparent 70%),
    radial-gradient(900px 500px at 0% 30%, rgba(176, 106, 59, 0.05), transparent 70%),
    var(--bg);
  min-height: 100vh;
}

a {
  color: var(--gold);
  text-decoration: none;
  transition: color 120ms ease;
}
a:hover { color: var(--gold-bright); }

code, pre {
  font-family: var(--font-mono);
  font-size: 0.92em;
}

code {
  background: rgba(200, 168, 90, 0.08);
  border: 1px solid var(--rule);
  border-radius: 3px;
  padding: 0.05em 0.4em;
  color: var(--gold-bright);
}

/* ── Header ────────────────────────────────────────────────────────────── */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 0.9rem 2rem;
  background: rgba(15, 13, 10, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--rule);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.04em;
  font-size: 0.98rem;
  text-transform: uppercase;
}
.brand:hover { color: var(--gold-bright); }

.brand-mark { width: 28px; height: 28px; }

.primary-nav {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  font-size: 0.92rem;
}
.primary-nav a {
  color: var(--ink-soft);
  letter-spacing: 0.02em;
}
.primary-nav a:hover { color: var(--gold-bright); }

/* ── Hero ──────────────────────────────────────────────────────────────── */

.hero {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 5rem 2rem 4rem;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 3rem;
  align-items: center;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  line-height: 1.05;
  letter-spacing: 0.01em;
  margin: 0 0 1.2rem;
  color: var(--ink);
}

.hero h1::after {
  content: "";
  display: block;
  width: 4.5rem;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), transparent);
  margin-top: 1.4rem;
}

.lede {
  color: var(--ink-soft);
  font-size: 1.1rem;
  max-width: 38rem;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 2rem 0 1rem;
}

.cta {
  display: inline-flex;
  align-items: center;
  padding: 0.7rem 1.3rem;
  border: 1px solid var(--gold-dim);
  border-radius: var(--rad);
  color: var(--ink);
  font-weight: 500;
  letter-spacing: 0.02em;
  background: transparent;
  transition: background 150ms ease, border-color 150ms ease, color 150ms ease, transform 80ms ease;
}
.cta:hover {
  border-color: var(--gold-bright);
  color: var(--gold-bright);
  background: rgba(200, 168, 90, 0.06);
}
.cta:active { transform: translateY(1px); }

.cta-primary {
  background: linear-gradient(180deg, var(--gold) 0%, var(--gold-dim) 100%);
  color: var(--bg);
  border-color: var(--gold);
}
.cta-primary:hover {
  background: linear-gradient(180deg, var(--gold-bright) 0%, var(--gold) 100%);
  color: var(--bg);
  border-color: var(--gold-bright);
}

.cta-ghost { border-color: var(--rule); color: var(--ink-soft); }
.cta-ghost:hover { border-color: var(--gold-dim); color: var(--ink); background: transparent; }

.cta-small { padding: 0.45rem 0.9rem; font-size: 0.9rem; }

/* ── Split-button (Download / Latest pre-release) ─────────────────────── */

.cta-split {
  display: inline-flex;
  align-items: stretch;
  position: relative;
}

.cta-split-main {
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
  border-right: 1px solid var(--gold-dim);
}

.cta-split-dropdown {
  display: inline-flex;
  align-items: stretch;
}

.cta-split-toggle {
  /* `summary` defaults to `display: list-item`; force it to behave like the
     other CTAs and stretch to the main button's height via the flex parent. */
  display: inline-flex;
  align-items: center;
  justify-content: center;
  list-style: none;
  cursor: pointer;
  padding: 0 0.85rem;
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
  border-left: none;
}
.cta-split-toggle::-webkit-details-marker { display: none; }
.cta-split-toggle::marker { content: ""; }
.cta-split-toggle svg { transition: transform 150ms ease; }
.cta-split-dropdown[open] .cta-split-toggle svg { transform: rotate(180deg); }

.cta-split-menu {
  list-style: none;
  margin: 0;
  padding: 0.35rem 0;
  position: absolute;
  top: calc(100% + 0.4rem);
  left: 0;
  min-width: 100%;
  background: var(--bg-elev);
  border: 1px solid var(--rule);
  border-radius: var(--rad);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.45);
  z-index: 5;
  white-space: nowrap;
}

.cta-split-menu li a {
  display: block;
  padding: 0.55rem 1rem;
  color: var(--ink-soft);
  font-size: 0.93rem;
  letter-spacing: 0.01em;
}
.cta-split-menu li a:hover {
  background: rgba(200, 168, 90, 0.08);
  color: var(--gold-bright);
}

.hero-supports {
  margin-top: 1.4rem;
  font-size: 0.85rem;
  color: var(--ink-faint);
  letter-spacing: 0.02em;
}

.hero-art {
  display: flex;
  justify-content: center;
  align-items: center;
}
.hero-logo {
  width: min(100%, 320px);
  filter: drop-shadow(0 10px 30px rgba(200, 168, 90, 0.18));
}

/* ── Sections ──────────────────────────────────────────────────────────── */

.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 5rem 2rem;
  border-top: 1px solid var(--rule);
}

.section-alt {
  background: var(--bg-alt);
  max-width: none;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.section-alt > * { max-width: var(--maxw); margin-left: auto; margin-right: auto; padding-left: 2rem; padding-right: 2rem; }
.section-alt { padding: 5rem 0; }

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3vw, 2.2rem);
  margin: 0 0 0.6rem;
  color: var(--ink);
  letter-spacing: 0.02em;
}
.section-title::after {
  content: "";
  display: block;
  width: 3rem;
  height: 2px;
  background: var(--gold);
  margin-top: 0.8rem;
}

.section-lede {
  color: var(--ink-soft);
  max-width: 50rem;
  margin: 0 0 2.5rem;
}

/* ── Feature grid ──────────────────────────────────────────────────────── */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
}

.feature {
  background: var(--bg-elev);
  border: 1px solid var(--rule);
  border-radius: var(--rad);
  padding: 1.25rem 1.3rem;
  transition: border-color 160ms ease, transform 160ms ease, background 160ms ease;
  position: relative;
}

.feature::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), transparent 70%);
  opacity: 0.4;
  border-radius: var(--rad) var(--rad) 0 0;
}

.feature:hover {
  border-color: var(--gold-dim);
  background: #221c14;
  transform: translateY(-2px);
}

.feature h3 {
  margin: 0 0 0.45rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: 0.03em;
  color: var(--gold-bright);
}

.feature p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

/* ── Server section ────────────────────────────────────────────────────── */

.server-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.server-points {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0;
  color: var(--ink-soft);
}
.server-points li {
  padding: 0.45rem 0 0.45rem 1.4rem;
  position: relative;
}
.server-points li::before {
  content: "◆";
  color: var(--gold);
  position: absolute;
  left: 0;
  top: 0.5rem;
  font-size: 0.75rem;
}
.server-points strong { color: var(--ink); }

.code-block {
  background: var(--bg-alt);
  border: 1px solid var(--rule);
  border-radius: var(--rad);
  padding: 1.2rem 1.4rem;
  margin: 0;
  overflow-x: auto;
  color: var(--ink);
  font-size: 0.88rem;
  line-height: 1.55;
  position: relative;
}
.code-block::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, var(--copper), transparent 70%);
  opacity: 0.5;
  border-radius: var(--rad) var(--rad) 0 0;
}

/* ── Get started ───────────────────────────────────────────────────────── */

.get-started {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.gs-card {
  background: var(--bg-elev);
  border: 1px solid var(--rule);
  border-radius: var(--rad);
  padding: 1.4rem;
}

.gs-card h3 {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: 0.04em;
  color: var(--gold-bright);
  text-transform: uppercase;
}

.gs-card p {
  color: var(--ink-soft);
  font-size: 0.95rem;
  margin: 0 0 1rem;
}

/* ── Footer ────────────────────────────────────────────────────────────── */

.site-footer {
  border-top: 1px solid var(--rule);
  background: var(--bg-alt);
  padding: 3.5rem 2rem 2rem;
  margin-top: 4rem;
}

.footer-grid {
  max-width: var(--maxw);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.6fr repeat(3, 1fr);
  gap: 2.5rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin: 0 0 0.8rem;
  font-family: var(--font-display);
  letter-spacing: 0.04em;
  color: var(--ink);
  font-size: 1rem;
}
.footer-mark { width: 24px; height: 24px; }

.footer-tag, .footer-license {
  color: var(--ink-faint);
  font-size: 0.88rem;
  margin: 0.3rem 0 0;
}

.site-footer h4 {
  margin: 0 0 0.8rem;
  font-family: var(--font-display);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--gold);
  text-transform: uppercase;
}
.site-footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.site-footer li {
  padding: 0.25rem 0;
  font-size: 0.92rem;
}
.site-footer li a { color: var(--ink-soft); display: inline-flex; align-items: center; gap: 0.45rem; }
.site-footer li a:hover { color: var(--gold-bright); }

.footer-icon {
  width: 16px;
  height: 16px;
  filter: brightness(0.85) sepia(0.4) hue-rotate(-15deg) saturate(2);
}

/* ── Responsive ────────────────────────────────────────────────────────── */

@media (max-width: 880px) {
  .hero { grid-template-columns: 1fr; padding: 3rem 1.4rem 2rem; }
  .hero-art { display: none; }
  .section { padding: 3.5rem 1.4rem; }
  .section-alt { padding: 3.5rem 0; }
  .section-alt > * { padding-left: 1.4rem; padding-right: 1.4rem; }
  .server-grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .site-header { padding: 0.8rem 1.4rem; }
  .primary-nav { gap: 1rem; font-size: 0.85rem; }
}

@media (max-width: 540px) {
  .footer-grid { grid-template-columns: 1fr; }
  .primary-nav a:not(:last-child) { display: none; }
}