/* Alpha X — autonomous AI agent on X. Dark, technical, kinetic. */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --bg:        #06080d;
  --bg-alt:    #0c1220;
  --bg-soft:   #111826;
  --surface:   #131b2c;
  --border:    #1d2a44;
  --border-strong: #2c3e64;
  --text:      #eef2ff;
  --text-mid:  #aab4cf;
  --text-soft: #6c7896;
  --accent:    #00b4ff;
  --accent-2:  #5b8cff;
  --accent-glow: rgba(0, 180, 255, 0.35);
  --good:      #21d07a;
  --warn:      #ffb938;
  --radius:    10px;
  --radius-lg: 16px;
  --sans: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  background: var(--bg);
  background-image:
    radial-gradient(ellipse at top, rgba(0,180,255,0.08) 0%, transparent 50%),
    radial-gradient(ellipse at bottom right, rgba(91,140,255,0.05) 0%, transparent 50%);
  color: var(--text);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-decoration: none; transition: color .15s; }
a:hover { color: var(--accent-2); text-decoration: underline; }
em { font-style: italic; color: var(--accent); font-weight: 500; }
strong { color: var(--text); font-weight: 600; }

h1, h2, h3 { font-weight: 600; letter-spacing: -0.02em; line-height: 1.15; color: var(--text); }
h1 { font-size: clamp(2.4rem, 5vw, 4.2rem); font-weight: 700; }
h2 { font-size: clamp(1.7rem, 3.5vw, 2.4rem); }
h3 { font-size: 1.1rem; }
p  { color: var(--text-mid); }

.container { max-width: 1180px; margin: 0 auto; padding: 0 28px; }
@media (max-width: 720px) { .container { padding: 0 18px; } }
section { padding: 96px 0; position: relative; }
section.dark { background: var(--bg-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(6, 8, 13, 0.85);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1180px; margin: 0 auto;
  padding: 12px 28px;
  display: flex; align-items: center; gap: 32px;
}
.nav .logo {
  display: flex; align-items: center; gap: 10px;
  font-weight: 700; font-size: 1.1rem; letter-spacing: 0.04em;
  color: var(--text);
}
.nav .logo img { border-radius: 50%; }
.nav .logo .accent { color: var(--accent); }
.nav .links { display: flex; gap: 26px; margin-left: auto; align-items: center; }
.nav .links a:not(.btn) {
  color: var(--text-mid); font-size: 0.92rem; font-weight: 500;
  text-decoration: none;
}
.nav .links a:not(.btn):hover { color: var(--text); }
@media (max-width: 720px) {
  .nav-inner { padding: 12px 18px; gap: 14px; }
  .nav .links { gap: 12px; }
  .nav .links a:not(.btn) { display: none; }
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 11px 22px;
  border-radius: var(--radius);
  font-family: var(--sans);
  font-weight: 600;
  font-size: 0.93rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background .15s ease, color .15s ease, border-color .15s ease, transform .08s ease, box-shadow .15s ease;
  white-space: nowrap;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn-lg { padding: 14px 28px; font-size: 1rem; }
.btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  color: #00121d;
  border-color: transparent;
  box-shadow: 0 0 0 0 var(--accent-glow);
}
.btn-primary:hover {
  color: #00121d;
  box-shadow: 0 0 32px 0 var(--accent-glow);
}
.btn-outline {
  background: transparent; color: var(--text); border-color: var(--border-strong);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }

/* Hero */
.hero { padding-top: 60px; padding-bottom: 40px; overflow: hidden; }
.hero-glow {
  position: absolute; inset: -10% -10% auto -10%; height: 60%;
  background: radial-gradient(ellipse at 50% 0%, rgba(0,180,255,0.18) 0%, transparent 60%);
  pointer-events: none; z-index: 0;
}
.hero .container { position: relative; z-index: 1; text-align: center; }
.status-row {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--text-mid);
  background: rgba(33, 208, 122, 0.08);
  border: 1px solid rgba(33, 208, 122, 0.25);
  padding: 6px 14px; border-radius: 999px;
  margin-bottom: 28px;
}
.status-row .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--good);
  box-shadow: 0 0 0 0 rgba(33, 208, 122, 0.5);
  animation: pulse 1.8s ease-in-out infinite;
}
.status-row strong { color: var(--good); font-weight: 600; }
.status-row .status-meta { color: var(--text-soft); }
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(33, 208, 122, 0.5); }
  50%      { box-shadow: 0 0 0 8px rgba(33, 208, 122, 0); }
}
.hero h1 { margin-bottom: 22px; max-width: 18ch; margin-left: auto; margin-right: auto; }
.hero h1 em { font-style: normal; background: linear-gradient(135deg, var(--accent), var(--accent-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero .lede {
  font-size: clamp(1.05rem, 1.6vw, 1.2rem); max-width: 620px;
  margin: 0 auto 36px; color: var(--text-mid);
}
.cta-row { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-bottom: 56px; }
.hero-banner {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: 0 30px 80px -20px rgba(0,0,0,0.6), 0 0 60px -20px var(--accent-glow);
  max-width: 1100px; margin: 0 auto;
}
.hero-banner img { width: 100%; }

/* Section heads */
.section-head { max-width: 720px; margin: 0 auto 56px; text-align: center; }
.section-head .eyebrow {
  display: inline-block; font-family: var(--mono); font-size: 0.78rem;
  letter-spacing: 0.16em; text-transform: uppercase; color: var(--accent);
  margin-bottom: 14px;
}
.section-head h2 { margin-bottom: 18px; }
.section-head p { color: var(--text-mid); font-size: 1.05rem; }

/* Grids */
.grid { display: grid; gap: 22px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-5 { grid-template-columns: repeat(5, 1fr); gap: 16px; }
@media (max-width: 940px) {
  .grid-3 { grid-template-columns: 1fr; }
  .grid-5 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 540px) {
  .grid-5 { grid-template-columns: 1fr; }
}

/* Cards (process steps) */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 26px;
  transition: border-color .2s, transform .2s;
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); }
.card .num {
  font-family: var(--mono); font-size: 0.8rem; color: var(--accent);
  letter-spacing: 0.1em; margin-bottom: 14px;
}
.card h3 { margin-bottom: 8px; font-size: 1.15rem; color: var(--text); }
.card p { font-size: 0.95rem; }

/* Capability tiles (5 across) */
.capability {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 18px;
  text-align: left;
  transition: border-color .2s, background .2s;
}
.capability:hover { border-color: var(--accent); background: var(--surface); }
.capability .cap-icon { font-size: 1.6rem; margin-bottom: 12px; }
.capability h3 { font-size: 0.98rem; margin-bottom: 6px; color: var(--text); }
.capability p { font-size: 0.85rem; color: var(--text-soft); line-height: 1.5; }

/* Stack grid */
.stack-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  max-width: 900px; margin: 0 auto;
}
@media (max-width: 720px) { .stack-grid { grid-template-columns: 1fr; } }
.stack-item {
  display: flex; justify-content: space-between; align-items: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  font-size: 0.92rem;
}
.stack-item .stack-label {
  font-family: var(--mono); color: var(--text-soft);
  text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.74rem;
}
.stack-item .stack-value { color: var(--text); font-weight: 500; }

/* CTA section */
.cta { padding: 96px 0; text-align: center; background: linear-gradient(180deg, transparent 0%, var(--bg-alt) 100%); }
.cta h2 { margin-bottom: 14px; }
.cta .lede { color: var(--text-mid); margin-bottom: 32px; font-size: 1.08rem; }

/* Footer */
footer {
  border-top: 1px solid var(--border);
  padding: 48px 0 32px;
  background: var(--bg-alt);
}
.footer-inner {
  display: flex; align-items: center; gap: 24px; flex-wrap: wrap;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
}
.footer-inner .brand { display: flex; align-items: center; gap: 12px; }
.footer-inner .brand img { border-radius: 50%; }
.footer-inner .brand-name { font-weight: 600; color: var(--text); }
.footer-inner .brand-meta { font-size: 0.85rem; color: var(--text-soft); }
.footer-links { display: flex; gap: 22px; margin-left: auto; flex-wrap: wrap; }
.footer-links a { color: var(--text-mid); font-size: 0.9rem; }
.footer-links a:hover { color: var(--accent); }
.footer-bottom { color: var(--text-soft); font-size: 0.82rem; padding-top: 0; }
@media (max-width: 720px) {
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .footer-links { margin-left: 0; }
}