/* VersionGopher Landing Page — Standalone CSS */
/* No dependency on existing style.css */

/* ─── Tokens ─── */
:root {
  --bg:        #0a0e17;
  --bg-card:   #111827;
  --bg-panel:  #0f1623;
  --bg-glass:  rgba(15, 22, 35, 0.8);
  --border:    rgba(88, 166, 255, 0.1);
  --border-hi: rgba(88, 166, 255, 0.25);
  --text:      #e6edf3;
  --text2:     #8b949e;
  --text3:     #484f58;
  --accent:    #58a6ff;
  --accent2:   #79c0ff;
  --purple:    #bc8cff;
  --green:     #3fb950;
  --red:       #f85149;
  --orange:    #d29922;
  --glow:      rgba(88, 166, 255, 0.12);
  --glow-p:    rgba(188, 140, 255, 0.08);
  --r:         14px;
  --r-sm:      8px;
  --ease:      cubic-bezier(0.4, 0, 0.2, 1);
  --max-w:     1200px;
}

/* ─── Reduced Motion ─── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* ─── Reset ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; }

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--text3); border-radius: 4px; }

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 32px; }
.center { text-align: center; }
.grad-text {
  background: linear-gradient(135deg, var(--accent), var(--purple));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ─── Buttons ─── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 22px; border-radius: var(--r-sm);
  font-family: inherit; font-size: 0.88rem; font-weight: 600;
  cursor: pointer; border: none; transition: all 0.25s var(--ease);
  text-decoration: none;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--purple));
  color: #fff;
  box-shadow: 0 0 24px var(--glow), 0 4px 12px rgba(0,0,0,0.3);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 0 36px rgba(88,166,255,0.25), 0 8px 24px rgba(0,0,0,0.4); }
.btn-outline {
  background: transparent; color: var(--text);
  border: 1px solid var(--border-hi);
}
.btn-outline:hover { background: rgba(255,255,255,0.05); border-color: var(--accent); color: var(--accent2); }
.btn-ghost { background: transparent; color: var(--text2); }
.btn-ghost:hover { color: var(--text); }
.btn-lg { padding: 14px 32px; font-size: 1rem; border-radius: var(--r); }

/* ─── Nav ─── */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 0 32px;
  transition: background 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.nav.scrolled {
  background: var(--bg-glass);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  box-shadow: 0 1px 0 var(--border), 0 8px 32px rgba(0,0,0,0.3);
}
.nav-inner {
  max-width: var(--max-w); margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  height: 72px;
}
.nav-brand { display: flex; align-items: center; gap: 14px; text-decoration: none; color: var(--text); }
.nav-logo {
  width: 42px; height: 42px; border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--purple));
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; box-shadow: 0 0 20px var(--glow);
}
.nav-title { font-size: 1.25rem; font-weight: 700; letter-spacing: -0.02em; }
.nav-title span { background: linear-gradient(135deg, var(--accent), var(--purple)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.nav-sub { font-size: 0.7rem; color: var(--text3); font-weight: 500; text-transform: uppercase; letter-spacing: 0.06em; }
.nav-actions { display: flex; gap: 10px; align-items: center; }

/* ─── Hero ─── */
.hero {
  position: relative; min-height: 100vh;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 120px 32px 80px; overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; overflow: hidden; pointer-events: none; }

/* Grid overlay */
.grid-overlay {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(88,166,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(88,166,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 60% 50% at 50% 40%, black, transparent);
  -webkit-mask-image: radial-gradient(ellipse 60% 50% at 50% 40%, black, transparent);
}

/* Geometric shapes */
.geo {
  position: absolute; border-radius: 50%;
  filter: blur(1px);
  animation: float 20s ease-in-out infinite;
}
.geo-1 {
  width: 320px; height: 320px; top: 10%; left: 8%;
  background: radial-gradient(circle, rgba(88,166,255,0.08), transparent 70%);
  animation-delay: 0s;
}
.geo-2 {
  width: 200px; height: 200px; top: 20%; right: 12%;
  background: radial-gradient(circle, rgba(188,140,255,0.07), transparent 70%);
  animation-delay: -5s;
}
.geo-3 {
  width: 100px; height: 100px; bottom: 30%; left: 20%;
  border-radius: 20%; border: 1px solid rgba(88,166,255,0.1);
  background: transparent;
  animation: spin-float 25s linear infinite;
}
.geo-4 {
  width: 60px; height: 60px; top: 35%; right: 25%;
  border-radius: 30%; border: 1px solid rgba(188,140,255,0.12);
  background: transparent;
  animation: spin-float 18s linear infinite reverse;
}
.geo-5 {
  width: 400px; height: 400px; bottom: -10%; right: -5%;
  background: radial-gradient(circle, rgba(88,166,255,0.05), transparent 60%);
  animation-delay: -10s;
}
@keyframes float {
  0%, 100% { transform: translateY(0) translateX(0); }
  25% { transform: translateY(-20px) translateX(10px); }
  50% { transform: translateY(-10px) translateX(-15px); }
  75% { transform: translateY(-25px) translateX(5px); }
}
@keyframes spin-float {
  0% { transform: rotate(0deg) translateY(0); }
  50% { transform: rotate(180deg) translateY(-15px); }
  100% { transform: rotate(360deg) translateY(0); }
}

.hero-content { position: relative; text-align: center; max-width: 800px; }
.hero-badge {
  display: inline-block; padding: 6px 18px; border-radius: 999px;
  border: 1px solid var(--border-hi);
  font-size: 0.78rem; font-weight: 600; color: var(--accent);
  letter-spacing: 0.04em; margin-bottom: 28px;
  background: rgba(88,166,255,0.06);
  animation: fadeUp 0.8s var(--ease) both;
}
.hero-h1 {
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  font-weight: 800; line-height: 1.1; letter-spacing: -0.03em;
  margin-bottom: 24px;
  animation: fadeUp 0.8s var(--ease) 0.15s both;
}
.hero-sub {
  font-size: 1.1rem; color: var(--text2); max-width: 600px; margin: 0 auto 36px;
  line-height: 1.7;
  animation: fadeUp 0.8s var(--ease) 0.3s both;
}
.hero-ctas {
  display: flex; gap: 16px; justify-content: center; flex-wrap: wrap;
  animation: fadeUp 0.8s var(--ease) 0.45s both;
}
.hero-platforms {
  display: flex; gap: 12px; align-items: center; justify-content: center;
  margin-top: 40px; flex-wrap: wrap;
  font-size: 0.78rem; color: var(--text3); font-weight: 500;
  animation: fadeUp 0.8s var(--ease) 0.6s both;
}
.dot { width: 3px; height: 3px; border-radius: 50%; background: var(--text3); }
.hero-scroll-hint {
  position: absolute; bottom: 40px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  color: var(--text3); font-size: 0.72rem; font-weight: 500;
  animation: fadeUp 0.8s var(--ease) 0.75s both;
  transition: opacity 0.4s;
}
.hero-scroll-hint.hidden { opacity: 0; pointer-events: none; }
.scroll-arrow {
  width: 20px; height: 20px; border-right: 2px solid var(--text3);
  border-bottom: 2px solid var(--text3); transform: rotate(45deg);
  animation: bounce 2s ease-in-out infinite;
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes bounce {
  0%, 100% { transform: rotate(45deg) translateY(0); }
  50% { transform: rotate(45deg) translateY(6px); }
}

/* ─── Features ─── */
.features { padding: 120px 0; }
.features-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 24px;
}
.feature-card {
  padding: 32px 28px; border-radius: var(--r);
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: all 0.35s var(--ease);
}
.feature-card:hover {
  border-color: var(--border-hi);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.3), 0 0 20px var(--glow);
}
.feature-icon { font-size: 2rem; margin-bottom: 16px; }
.feature-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 10px; }
.feature-card p { font-size: 0.88rem; color: var(--text2); line-height: 1.6; }

/* ─── Showcase ─── */
.showcase { padding: 80px 0 120px; }
.showcase-block {
  display: grid; grid-template-columns: 1fr 1.3fr; gap: 60px;
  align-items: center; margin-bottom: 120px;
}
.showcase-block:last-child { margin-bottom: 0; }
.showcase-block-reverse { direction: rtl; }
.showcase-block-reverse > * { direction: ltr; }
.section-h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 800; line-height: 1.15; letter-spacing: -0.02em;
  margin-bottom: 20px;
}
.showcase-text p { font-size: 1rem; color: var(--text2); line-height: 1.7; }
.showcase-img-wrap {
  position: relative; border-radius: var(--r);
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4), 0 0 40px var(--glow);
  border: 1px solid var(--border);
  transform: perspective(1200px) rotateY(-3deg);
  transition: transform 0.5s var(--ease);
}
.showcase-block-reverse .showcase-img-wrap { transform: perspective(1200px) rotateY(3deg); }
.showcase-img-wrap:hover { transform: perspective(1200px) rotateY(0deg); }
.showcase-img { width: 100%; display: block; }

.drift-section {
  margin: -20px 0 120px;
}
.drift-panel {
  max-width: 980px;
  background:
    linear-gradient(135deg, rgba(88,166,255,0.05), rgba(188,140,255,0.04)),
    var(--bg-card);
}
.drift-eyebrow {
  display: inline-block;
  margin-bottom: 18px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.drift-header {
  max-width: 900px;
}
.drift-header p {
  margin-bottom: 14px;
  color: var(--text2);
  font-size: 1rem;
  line-height: 1.75;
}
.drift-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 32px;
}
.drift-card {
  min-height: 145px;
  padding: 22px;
  border-radius: var(--r-sm);
  background: rgba(15, 22, 35, 0.78);
  border: 1px solid var(--border);
}
.drift-card strong {
  display: block;
  margin-bottom: 10px;
  color: var(--text);
  font-size: 0.98rem;
}
.drift-card p {
  color: var(--text2);
  font-size: 0.88rem;
  line-height: 1.6;
}
.drift-callout {
  margin-top: 24px;
  padding: 20px 24px;
  border-left: 3px solid var(--accent);
  border-radius: var(--r-sm);
  background: rgba(88,166,255,0.06);
}
.drift-callout p {
  color: var(--text2);
  font-size: 0.92rem;
  line-height: 1.65;
}
.drift-callout p + p {
  margin-top: 10px;
  color: var(--text);
  font-weight: 600;
}

/* ─── Architecture ─── */
.arch { padding: 120px 0; }
.arch-sub {
  text-align: center; color: var(--text2); font-size: 1rem;
  margin: 12px 0 48px;
}
.arch-tabs {
  display: flex; gap: 8px; justify-content: center; flex-wrap: wrap;
  margin-bottom: 32px;
}
.arch-tab {
  padding: 10px 24px; border-radius: 999px;
  background: transparent; border: 1px solid var(--border);
  color: var(--text2); font-family: inherit; font-size: 0.88rem; font-weight: 600;
  cursor: pointer; transition: all 0.25s var(--ease);
}
.arch-tab:hover { border-color: var(--border-hi); color: var(--text); }
.arch-tab.active {
  background: linear-gradient(135deg, var(--accent), var(--purple));
  border-color: transparent; color: #fff;
  box-shadow: 0 0 20px var(--glow);
}
.arch-panels { position: relative; min-height: 400px; }
.arch-panel {
  display: none;
  animation: panelIn 0.4s var(--ease);
}
.arch-panel.active { display: block; }
@keyframes panelIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}
.arch-panel-content {
  padding: 40px; border-radius: var(--r);
  background: var(--bg-card); border: 1px solid var(--border);
  max-width: 800px; margin: 0 auto;
}
.arch-panel-content h3 { font-size: 1.4rem; font-weight: 700; margin-bottom: 16px; }
.arch-panel-content p { font-size: 0.95rem; color: var(--text2); line-height: 1.7; margin-bottom: 20px; }
.arch-list { margin-bottom: 24px; }
.arch-list li {
  padding: 8px 0 8px 24px; position: relative;
  font-size: 0.9rem; color: var(--text2);
}
.arch-list li::before {
  content: '→'; position: absolute; left: 0; color: var(--accent); font-weight: 600;
}

/* Code block */
.code-block {
  border-radius: var(--r-sm); overflow: hidden;
  background: #0d1117; border: 1px solid var(--border);
}
.code-header {
  display: flex; align-items: center; gap: 6px;
  padding: 10px 16px; background: rgba(255,255,255,0.03);
  font-size: 0.72rem; color: var(--text3); font-weight: 600;
  border-bottom: 1px solid var(--border);
}
.code-dot { width: 10px; height: 10px; border-radius: 50%; }
.code-dot.red { background: var(--red); }
.code-dot.yellow { background: var(--orange); }
.code-dot.green { background: var(--green); }
.code-header .code-dot + .code-dot ~ .code-dot { margin-right: 8px; }
pre {
  padding: 20px; margin: 0; overflow-x: auto;
  font-family: 'JetBrains Mono', monospace; font-size: 0.82rem;
  line-height: 1.7; color: var(--text);
}

/* ─── SBOM Compliance ─── */
.sbom { padding: 120px 0; }
.sbom-grid {
  display: grid; grid-template-columns: 1fr 1.2fr; gap: 60px; align-items: start;
}
.sbom-badge {
  display: inline-block; padding: 6px 16px; border-radius: 999px;
  border: 1px solid rgba(210,153,34,0.3);
  background: rgba(210,153,34,0.08);
  font-size: 0.78rem; font-weight: 600; color: var(--orange);
  letter-spacing: 0.04em; margin-bottom: 20px;
}
.sbom-text p {
  font-size: 1rem; color: var(--text2); line-height: 1.7; margin-top: 16px;
}
.sbom-text em { color: var(--text); font-style: italic; }
.sbom-cards { display: flex; flex-direction: column; gap: 16px; }
.sbom-card {
  padding: 24px; border-radius: var(--r);
  background: var(--bg-card); border: 1px solid var(--border);
  transition: all 0.3s var(--ease);
}
.sbom-card:hover {
  border-color: var(--border-hi);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.25), 0 0 12px var(--glow);
}
.sbom-card-icon { font-size: 1.4rem; margin-bottom: 10px; }
.sbom-card strong { display: block; font-size: 0.95rem; margin-bottom: 6px; }
.sbom-card p { font-size: 0.85rem; color: var(--text2); line-height: 1.6; margin: 0; }
.sbom-card em { color: var(--accent); font-style: italic; }

/* ─── CTA ─── */
.cta-section {
  padding: 100px 0;
  background: radial-gradient(ellipse at center, rgba(88,166,255,0.06), transparent 60%);
}
.cta-sub { color: var(--text2); font-size: 1.05rem; margin-bottom: 32px; }

/* ─── Footer ─── */
.footer {
  padding: 40px 0;
  border-top: 1px solid var(--border);
}
.footer-inner {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 16px;
}
.footer-brand { display: flex; align-items: center; gap: 10px; font-size: 0.85rem; color: var(--text2); }
.footer-copy { font-size: 0.8rem; color: var(--text3); }
.footer-copy a { color: var(--text2); }
.footer-copy a:hover { color: var(--accent); }
.footer-legal {
  display: flex; align-items: center; justify-content: center;
  gap: 8px; flex-wrap: wrap;
  margin-top: 16px; padding-top: 16px;
  border-top: 1px solid rgba(88,166,255,0.06);
  font-size: 0.72rem; color: var(--text3);
}
.footer-legal a { color: var(--text3); }
.footer-legal a:hover { color: var(--accent); }
.footer-sep { color: var(--text3); opacity: 0.4; }

/* ─── Scroll Reveal ─── */
.reveal {
  opacity: 0; transform: translateY(32px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal:nth-child(2) { transition-delay: 0.1s; }
.reveal:nth-child(3) { transition-delay: 0.2s; }
.reveal:nth-child(4) { transition-delay: 0.3s; }

/* ─── Platform Highlight ─── */
.platform-highlight {
  color: var(--accent);
  font-weight: 700;
  padding: 2px 10px;
  border: 1px solid var(--border-hi);
  border-radius: 999px;
  background: rgba(88,166,255,0.08);
  animation: pulse-border 3s ease-in-out infinite;
}
@keyframes pulse-border {
  0%, 100% { border-color: var(--border-hi); box-shadow: none; }
  50% { border-color: var(--accent); box-shadow: 0 0 12px var(--glow); }
}

/* ─── Space Section ─── */
.space-section {
  position: relative;
  padding: 140px 0 120px;
  overflow: hidden;
  min-height: 80vh;
  display: flex; align-items: center;
}
.space-video-wrap {
  position: absolute; inset: 0; z-index: 0;
}
.space-video {
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0.45;
}
.space-overlay {
  position: absolute; inset: 0;
  background:
    linear-gradient(180deg, var(--bg) 0%, rgba(10,14,23,0.55) 18%, rgba(10,14,23,0.45) 80%, var(--bg) 100%),
    linear-gradient(90deg, rgba(10,14,23,0.6) 0%, transparent 55%);
}
.space-content {
  position: relative; z-index: 1;
  max-width: 720px;
}
.space-badge {
  display: inline-block; padding: 6px 16px; border-radius: 999px;
  border: 1px solid rgba(63,185,80,0.3);
  background: rgba(63,185,80,0.08);
  font-size: 0.78rem; font-weight: 600; color: var(--green);
  letter-spacing: 0.04em; margin-bottom: 20px;
}
.space-desc {
  font-size: 1.05rem; color: rgba(230,237,243,0.85); line-height: 1.75;
  margin-bottom: 40px;
  text-shadow: 0 1px 4px rgba(0,0,0,0.6);
}
.space-stats {
  display: flex; gap: 48px; margin-bottom: 44px; flex-wrap: wrap;
}
.space-stat-value {
  font-size: 2.4rem; font-weight: 800; color: #fff;
  letter-spacing: -0.02em; line-height: 1.1;
  text-shadow: 0 2px 8px rgba(0,0,0,0.7);
}
.space-stat-value span { font-size: 1.2rem; font-weight: 600; color: var(--accent); margin-left: 2px; }
.space-stat-label {
  font-size: 0.78rem; color: rgba(230,237,243,0.7); font-weight: 600; margin-top: 4px;
  text-transform: uppercase; letter-spacing: 0.06em;
  text-shadow: 0 1px 4px rgba(0,0,0,0.6);
}
.space-highlights {
  display: flex; flex-direction: column; gap: 20px; margin-bottom: 40px;
}
.space-hl {
  display: flex; gap: 16px; align-items: flex-start;
  padding: 20px 24px; border-radius: var(--r);
  background: rgba(10, 14, 23, 0.85);
  border: 1px solid var(--border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: border-color 0.3s var(--ease);
}
.space-hl:hover { border-color: var(--border-hi); }
.space-hl-icon { font-size: 1.5rem; flex-shrink: 0; margin-top: 2px; }
.space-hl strong { display: block; font-size: 0.95rem; margin-bottom: 4px; color: #fff; }
.space-hl p { font-size: 0.85rem; color: rgba(230,237,243,0.8); line-height: 1.6; margin: 0; }
.space-credit {
  font-size: 0.68rem; color: rgba(230,237,243,0.4); font-style: italic;
}

/* ─── Responsive ─── */
@media (max-width: 900px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .showcase-block { grid-template-columns: 1fr; gap: 32px; }
  .showcase-block-reverse { direction: ltr; }
  .showcase-img-wrap { transform: none !important; }
  .hero-h1 { font-size: 2.4rem; }
  .space-stats { gap: 32px; }
  .space-section { min-height: auto; padding: 100px 0 80px; }
  .drift-section { margin-bottom: 80px; }
  .drift-panel { padding: 32px; }
  .drift-cards { grid-template-columns: repeat(2, 1fr); }
  .sbom-grid { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .features-grid { grid-template-columns: 1fr; }
  .nav-inner { height: 60px; }
  .nav-actions .btn-ghost { display: none; }
  .nav-actions .nav-login { display: none; }
  .hero { padding: 100px 20px 60px; }
  .hero-sub { font-size: 0.95rem; }
  .container { padding: 0 20px; }
  .arch-panel-content { padding: 24px; }
  .arch-tab { padding: 8px 16px; font-size: 0.8rem; }
  .footer-inner { flex-direction: column; text-align: center; }
  .space-stats { gap: 24px; }
  .space-stat-value { font-size: 1.8rem; }
  .space-hl { padding: 16px; }
  .space-section { padding: 80px 0 60px; }
  .drift-panel { padding: 24px; }
  .drift-cards { grid-template-columns: 1fr; }
}