/* Цвета и темы */
:root{
  /* Apple Human Interface tokens (dark) */
  --bg:#1c1c1e;             /* systemBackground dark */
  --panel:#2c2c2e;          /* secondarySystemBackground dark */
  --card:#1f1f22;           /* tertiarySystemBackground dark */
  --text:#f5f5f7;           /* label color */
  --muted:#a1a1a6;          /* secondary label */
  --border:#3a3a3c;         /* separator */
  --brand:#0a84ff;          /* systemBlue */
  --ok:#34c759;             /* systemGreen */
  --shadow:0 8px 24px rgba(0,0,0,.28);
  --radius:12px;
  color-scheme:dark light;
  --header-h:56px;
}
:root.light{
  --bg:#f5f5f7;             /* systemBackground */
  --panel:#ffffff;           /* secondarySystemBackground */
  --card:#ffffff;            /* tertiarySystemBackground */
  --text:#1d1d1f;            /* label */
  --muted:#6e6e73;           /* secondary label */
  --border:#d2d2d7;          /* separator */
  --brand:#007aff;           /* systemBlue (light) */
  --ok:#34c759;              /* systemGreen */
  --shadow:0 6px 18px rgba(0,0,0,.08);
}

/* Базовая типографика + фон */
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0; font:16px/1.6 system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,'Noto Sans',Arial;
  color:var(--text);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
:root.light body{ background-color: var(--bg); }
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}

/* Контейнеры */
.wrap{max-width:1080px;margin:0 auto;padding:24px 20px}
header{
  position:sticky;top:0;z-index:10;
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  background:color-mix(in oklab, var(--panel) 70%, transparent);
  border-bottom:1px solid var(--border);
}
.wrap.bar{padding-left:20px;padding-right:20px}

/* Навигация/кнопки */
.bar{display:flex;align-items:center;gap:12px;justify-content:space-between;padding:10px 0}
.bar-left{display:flex;align-items:center;gap:12px}
.bar-right{display:flex;align-items:center;gap:12px}
.brand{display:flex;align-items:center;gap:12px}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 16px;border:1px solid color-mix(in oklab, var(--border) 70%, transparent);
  border-radius:999px; /* iOS pill */
  background:color-mix(in oklab, var(--panel) 92%, transparent);
  box-shadow:none;font-weight:600;line-height:1.2;
  transition:transform .12s ease, background .12s ease, border-color .12s ease;
}
.btn:hover{transform:translateY(-1px);background:color-mix(in oklab, var(--panel) 86%, transparent)}
.btn:active{transform:translateY(0)}
.ghost{background:transparent;border-color:var(--border)}
.ghost:hover{background:color-mix(in oklab, var(--panel) 90%, transparent)}
.btn:focus{outline:2px solid color-mix(in oklab, var(--brand) 45%, transparent); outline-offset:2px}

nav.main-nav a{margin:0 10px;font-weight:600;opacity:.92}
.menu-btn{display:none;min-width:44px;min-height:44px;justify-content:center}
@media (max-width:960px){
  .menu-btn{margin-right:8px}
}

/* Мобильное меню (оверлей) */
.mobile-menu{
  position:fixed; background:var(--panel); width: 100%;
  border-top:1px solid var(--border); display:none; padding:12px 20px; overflow:auto; z-index:9;
}
.mobile-menu a{display:block;padding:14px 6px;border-bottom:1px solid var(--border)}
body.menu-open{overflow:hidden}
body.menu-open .mobile-menu{display:block}

/* Герой/карточки/сетки */
.hero{display:grid;grid-template-columns:1.1fr .5fr;gap:28px;align-items:center;padding:52px 0 28px}
.tag{display:inline-block;padding:6px 10px;border:1px solid var(--border);border-radius:999px;font-size:13px;color:var(--muted)}
h1{font-size:44px;line-height:1.1;margin:12px 0 10px;letter-spacing:-.01em;font-weight:700}
h2{margin:6px 0 14px;font-size:22px;letter-spacing:-.01em}
h3{margin:0 0 8px;font-size:17px;font-weight:600}
.lead{font-size:18px;color:var(--muted);margin:10px 0 22px}
.card{
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:none;
  padding:20px;
}
.glass{background:linear-gradient(180deg, color-mix(in oklab, var(--panel) 80%, transparent), color-mix(in oklab, var(--panel) 94%, transparent))}
.grid{display:grid;gap:18px}
.grid.cols-3{grid-template-columns:repeat(3,1fr)}
.grid.cols-2{grid-template-columns:repeat(2,1fr)}
section{padding:26px 0}
.divider{height:1px;background:linear-gradient(90deg, transparent, var(--border), transparent);margin:14px 0}

.chips{display:flex;flex-wrap:wrap;gap:10px}
.chip{border:1px solid var(--border);padding:6px 12px;border-radius:999px;font-weight:600;background:color-mix(in oklab, var(--panel) 94%, transparent)}
.project{display:flex;flex-direction:column;gap:12px}
.muted{color:var(--muted)}
.footer{padding:22px 0 40px;color:var(--muted);font-size:14px}

/* Таймлайн */
.timeline{
  position: relative;
  padding: 6px 0 6px 28px; /* место под линию и точки */
  margin-left: 0;
}
/* вертикальная линия с градиентом */
.timeline::before{
  content:""; position:absolute; left:12px; top:0; bottom:0; width:2px;
  background: linear-gradient(180deg, color-mix(in oklab, var(--brand) 55%, transparent), color-mix(in oklab, var(--ok) 55%, transparent));
  opacity:.7;
}
.tl-item{
  position:relative;
  margin:0 0 22px 0;
  padding:14px 14px 12px 16px;
  border:1px solid var(--border);
  border-radius:12px;
  background: color-mix(in oklab, var(--panel) 92%, transparent);
  box-shadow: 0 6px 16px rgba(0,0,0,.12);
  transition: transform .18s ease, border-color .18s ease, background .18s ease;
}
.tl-item:hover{ transform: translateY(-2px); border-color: color-mix(in oklab, var(--brand) 40%, var(--border)); }
/* точка-узел */
.tl-item::before{
  content:""; position:absolute; left:-22px; top:20px; width:12px; height:12px; border-radius:50%;
  background: radial-gradient(circle at 35% 35%, #fff, color-mix(in oklab, var(--brand) 35%, var(--panel)) 60%);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--brand) 25%, transparent), 0 8px 18px rgba(0,0,0,.25);
}
/* мини-плашки и мета */
.tl-item h3{ margin:0 0 6px; font-size:18px; line-height:1.3 }
.tl-item .muted{ font-size:14px; opacity:.9; margin-bottom:6px }
.tl-item ul{ margin:8px 0 0 18px }
.badge{
  display:inline-block;
  background: color-mix(in oklab, var(--panel) 88%, transparent);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.2;
  white-space: nowrap;
  box-shadow: 0 2px 6px rgba(0,0,0,.08);
  transition: background .15s ease, transform .15s ease;
}
.badge:hover{
  background: color-mix(in oklab, var(--brand) 15%, var(--panel));
  transform: translateY(-1px);
}

/* компактнее на мобилке */
@media (max-width:640px){
  .timeline{ padding-left:24px }
  .tl-item{ padding:12px }
  .tl-item::before{ left:-18px }
}

/* Эффекты */
.pulse{position:relative}
.pulse::after{content:"";position:absolute;inset:-2px;border-radius:inherit;border:2px solid color-mix(in oklab, var(--brand) 60%, transparent);filter:blur(6px);opacity:.55;animation:pulse 2.4s infinite ease-out}
@keyframes pulse{0%{opacity:.7;transform:scale(1)}100%{opacity:0;transform:scale(1.12)}}
.toast{position:fixed;bottom:18px;left:50%;transform:translateX(-50%);background:var(--panel);border:1px solid var(--border);padding:10px 14px;border-radius:10px;display:none;box-shadow:var(--shadow)}

/* Адаптив */
@media (max-width:960px){
  .wrap{padding:18px 16px}
  .wrap.bar{padding-left:16px;padding-right:16px}
  nav.main-nav{display:none}
  .menu-btn{display:inline-flex}
  .hero{grid-template-columns:1fr}
  .grid.cols-3{grid-template-columns:1fr 1fr}
  .hide-mobile { display: none !important; }
}
@media (max-width:640px){
  .grid.cols-3,.grid.cols-2{grid-template-columns:1fr}
  h1{font-size:36px}
}

/* Focus visible helper */
:focus-visible{outline:2px solid color-mix(in oklab, var(--brand) 45%, transparent);outline-offset:2px;border-radius:8px}