/* shared.css — общие стили для всех страниц V-SEQ */
:root{
  --bg-0: #050309;
  --bg-1: #0a0617;
  --bg-2: #100a26;
  --ink-0: #f4f1ff;
  --ink-1: #b8b0d6;
  --ink-2: #6f6890;
  --ink-3: #3a3556;
  --grid: rgba(140, 120, 255, 0.06);
  --line: rgba(180, 160, 255, 0.14);
  --line-strong: rgba(180, 160, 255, 0.28);
  --accent: oklch(0.72 0.22 280);
  --accent-2: oklch(0.78 0.20 230);
  --accent-3: oklch(0.78 0.22 320);
  --warn: oklch(0.85 0.18 90);
  --ok: oklch(0.82 0.20 165);
  --halo: color-mix(in oklch, var(--accent) 60%, transparent);
  --halo-2: color-mix(in oklch, var(--accent-2) 60%, transparent);
  --mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;
  --sans: 'Space Grotesk', ui-sans-serif, system-ui, sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg-0);color:var(--ink-0);
  font-family:var(--sans);overflow-x:hidden}
body{min-height:100vh}

.stage{
  position:relative;min-height:100vh;
  background:
    radial-gradient(1200px 800px at 80% -10%, color-mix(in oklch, var(--accent) 14%, transparent), transparent 60%),
    radial-gradient(900px 700px at -10% 110%, color-mix(in oklch, var(--accent-2) 12%, transparent), transparent 60%),
    radial-gradient(600px 600px at 50% 50%, color-mix(in oklch, var(--accent-3) 5%, transparent), transparent 70%),
    linear-gradient(180deg, var(--bg-0), var(--bg-1) 40%, var(--bg-0));
  overflow:hidden;
}
.stars,.stars-far{position:fixed;inset:0;pointer-events:none;z-index:0}
.stars-far{opacity:.55}
.grid-overlay{
  position:fixed;inset:0;pointer-events:none;z-index:1;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size:56px 56px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 50%, black 40%, transparent 100%);
}
.scanline{
  position:fixed;inset:0;pointer-events:none;z-index:2;
  background: repeating-linear-gradient(0deg, transparent 0, transparent 3px,
    rgba(255,255,255,.012) 3px, rgba(255,255,255,.012) 4px);
  mix-blend-mode: overlay;
}
.vignette{
  position:fixed;inset:0;pointer-events:none;z-index:3;
  background: radial-gradient(ellipse at center, transparent 50%, rgba(0,0,0,.55) 100%);
}
.shell{position:relative;z-index:5;max-width:1480px;margin:0 auto;padding:28px 36px 56px}

/* ── NAV ── */
.nav{
  display:grid;grid-template-columns:auto 1fr auto;gap:24px;align-items:center;
  padding-bottom:20px;border-bottom:1px solid var(--line);
}
.lockup{display:flex;align-items:center;gap:14px;text-decoration:none;color:inherit}
.mark{
  width:38px;height:38px;position:relative;border:1px solid var(--line-strong);
  border-radius:8px;display:grid;place-items:center;
  background:radial-gradient(circle at 30% 30%, color-mix(in oklch, var(--accent) 30%, transparent), transparent 70%), var(--bg-2);
  box-shadow:0 0 24px var(--halo), inset 0 0 12px rgba(0,0,0,.4);
}
.mark::before{content:"";position:absolute;inset:6px;border:1px solid var(--accent);border-radius:50%;opacity:.7}
.mark::after{content:"";position:absolute;width:6px;height:6px;border-radius:50%;
  background:var(--accent);box-shadow:0 0 12px var(--accent)}
.lockup .name{display:flex;flex-direction:column;line-height:1}
.lockup .row{display:flex;align-items:baseline;gap:8px}
.lockup .big{font-family:var(--mono);font-weight:600;letter-spacing:.04em;font-size:16px;color:var(--ink-0)}
.lockup .slash{color:var(--ink-2);font-family:var(--mono);font-size:13px}
.lockup .seq{color:var(--accent);font-family:var(--mono);font-weight:600;font-size:13px}
.lockup .sub{font-family:var(--mono);font-size:10.5px;color:var(--ink-2);
  margin-top:5px;letter-spacing:.08em;text-transform:uppercase}

.nav-links{display:flex;gap:6px;justify-content:center;flex-wrap:wrap}
.nav-links a{
  font-family:var(--mono);font-size:11px;letter-spacing:.10em;text-transform:uppercase;
  color:var(--ink-1);text-decoration:none;padding:8px 14px;border-radius:6px;
  border:1px solid transparent;transition:all .15s;
}
.nav-links a:hover{color:var(--ink-0);background:rgba(255,255,255,.03);border-color:var(--line)}
.nav-links a.active{
  color:var(--ink-0);border-color:var(--accent);
  background: color-mix(in oklch, var(--accent) 12%, transparent);
}

.nav-right{display:flex;gap:10px;align-items:center;justify-content:flex-end}
.lang-switch{
  display:flex;border:1px solid var(--line);border-radius:6px;overflow:hidden;
  font-family:var(--mono);font-size:10.5px;letter-spacing:.12em;
}
.lang-switch button{
  appearance:none;border:0;background:transparent;color:var(--ink-2);
  padding:8px 12px;cursor:pointer;text-transform:uppercase;
  border-right:1px solid var(--line);transition:all .15s;
}
.lang-switch button:last-child{border-right:0}
.lang-switch button.on{
  background: color-mix(in oklch, var(--accent) 16%, transparent);
  color:var(--ink-0);
}
.lang-switch button:hover{color:var(--ink-0)}

/* ── BUTTONS ── */
.btn{
  appearance:none;border:0;cursor:pointer;
  font-family:var(--mono);font-size:11.5px;letter-spacing:.10em;
  text-transform:uppercase;padding:14px 22px;border-radius:8px;
  display:inline-flex;align-items:center;gap:10px;
  transition:transform .15s, box-shadow .25s, background .2s;
  text-decoration:none;
}
.btn-primary{
  background:linear-gradient(180deg, color-mix(in oklch, var(--accent) 90%, white 10%), var(--accent));
  color:#0a0419;
  box-shadow:0 0 0 1px color-mix(in oklch, var(--accent) 50%, transparent),
    0 8px 28px var(--halo), inset 0 1px 0 rgba(255,255,255,.4);
  font-weight:600;
}
.btn-primary:hover{transform:translateY(-1px)}
.btn-ghost{background:rgba(255,255,255,.02);color:var(--ink-0);border:1px solid var(--line-strong)}
.btn-ghost:hover{background:rgba(255,255,255,.05);border-color:var(--accent)}
.btn .arrow{transition:transform .2s}
.btn:hover .arrow{transform:translateX(3px)}

/* ── PAGE HEAD ── */
.page-eyebrow{
  font-family:var(--mono);font-size:10.5px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--accent);
  display:flex;align-items:center;gap:10px;
}
.page-eyebrow::before{content:"";width:24px;height:1px;background:var(--accent);box-shadow:0 0 8px var(--accent)}
.page-title{
  font-family:var(--sans);font-weight:300;
  font-size:clamp(40px, 5.4vw, 68px);line-height:1.0;letter-spacing:-.025em;
  margin:14px 0 0;color:var(--ink-0);text-wrap:balance;
}
.page-title em{font-style:normal;font-weight:500;
  background:linear-gradient(95deg, var(--accent), var(--accent-3) 60%, var(--accent-2));
  -webkit-background-clip:text;background-clip:text;color:transparent}
.page-lede{
  font-family:var(--mono);font-size:13px;color:var(--ink-1);
  line-height:1.55;max-width:620px;margin-top:22px;
  border-left:1px solid var(--line-strong);padding-left:14px;
}
.page-lede b{color:var(--ink-0);font-weight:500}

.pagefoot{
  margin-top:48px;padding-top:18px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;align-items:center;
  font-family:var(--mono);font-size:10.5px;color:var(--ink-3);
  letter-spacing:.08em;text-transform:uppercase;flex-wrap:wrap;gap:10px;
}
.pagefoot a{color:var(--ink-2);text-decoration:none}
.pagefoot a:hover{color:var(--ink-0)}

/* auth slot */
.auth-slot{display:flex;gap:8px;align-items:center}
.auth-user{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--mono);font-size:11px;color:var(--ink-1);
  border:1px solid var(--line);border-radius:6px;padding:6px 10px;
  background:rgba(255,255,255,.02);
}
.auth-user b{color:var(--ink-0);font-weight:500}
.auth-user .auth-tier{color:var(--accent);letter-spacing:.08em;font-size:10px}
.auth-dot{width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 8px var(--ok)}
.auth-btn{
  appearance:none;border:1px solid var(--line);background:rgba(255,255,255,.02);
  color:var(--ink-1);font-family:var(--mono);font-size:10.5px;letter-spacing:.10em;
  text-transform:uppercase;padding:8px 12px;border-radius:6px;cursor:pointer;
  text-decoration:none;transition:all .15s;
}
.auth-btn:hover{color:var(--ink-0);border-color:var(--line-strong)}
.auth-btn.primary{
  background:linear-gradient(180deg, color-mix(in oklch, var(--accent) 90%, white 10%), var(--accent));
  color:#0a0419;border-color:transparent;font-weight:600;
  box-shadow:0 0 18px var(--halo);
}

@media (max-width: 900px){
  .nav{grid-template-columns:1fr 1fr;gap:14px}
  .nav-links{order:3;grid-column:1/-1;justify-content:flex-start}
  .shell{padding:20px 18px 40px}
}