/* ============================================================
   MUBASHIR — BASE / DESIGN SYSTEM
   Shared tokens, reset, typography, and core atoms.
   Loaded first on every page. Page-specific styles live in
   home.css / article.css / styleguide.css.
============================================================ */

:root{
  /* warm sunrise accent — shared across both themes */
  --brand:#F97316;
  --brand-2:#FBBF24;
  --brand-3:#FF6B4A;
  --grad:linear-gradient(135deg,#FDBB2D 0%,#F97316 52%,#FF5E4D 120%);
  --glow:rgba(249,115,22,.30);
  --radius:18px;
  --radius-lg:26px;
  --radius-sm:12px;
  --maxw:1180px;
  --nav-h:70px;
  --ease:cubic-bezier(.22,1,.36,1);
  /* dark theme surfaces (warm charcoal) */
  --bg:#0A0908;
  --bg-2:#100E0C;
  --surface:rgba(255,255,255,.04);
  --surface-2:rgba(255,255,255,.07);
  --surface-solid:#17140F;
  --border:rgba(255,255,255,.10);
  --border-strong:rgba(255,255,255,.18);
  --text:#F5F1EC;
  --muted:#ADA79E;
  --faint:#7A736A;
  --grad-text:linear-gradient(120deg,#FFD98A 0%,#FFAE63 45%,#FF8A7A 100%);
  --shadow-sm:0 1px 2px rgba(0,0,0,.4);
  --shadow:0 20px 50px -20px rgba(0,0,0,.7);
  --shadow-glow:0 0 0 1px var(--border), 0 30px 60px -25px rgba(220,120,40,.5);
  --code-bg:#16120d;
}
[data-theme="light"]{
  /* light theme — clean warm white + sun accent (default) */
  --bg:#FFFDFB;
  --bg-2:#FFFFFF;
  --surface:#FFFFFF;
  --surface-2:#FBF3EA;
  --surface-solid:#FFFFFF;
  --border:rgba(60,40,15,.12);
  --border-strong:rgba(60,40,15,.20);
  --text:#1B140D;
  --muted:#6E6357;
  --faint:#A99C8C;
  --glow:rgba(249,115,22,.16);
  --code-bg:#17130D;
  --grad-text:linear-gradient(120deg,#F59E0B 0%,#F9731A 45%,#EA4E33 100%);
  --shadow:0 24px 60px -28px rgba(120,70,20,.28);
  --shadow-glow:0 0 0 1px var(--border), 0 26px 55px -30px rgba(230,140,50,.30);
}

/* ---------- Reset & base ---------- */
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + 20px)}
body{
  font-family:'Inter',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  background:var(--bg);color:var(--text);
  line-height:1.6;-webkit-font-smoothing:antialiased;
  overflow-x:hidden;transition:background .5s var(--ease),color .5s var(--ease);
}
h1,h2,h3,h4,.display{font-family:'Space Grotesk','Inter',sans-serif;font-weight:600;letter-spacing:-.02em;line-height:1.08}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
::selection{background:rgba(249,115,22,.32);color:#fff}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.grad-text{background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- Global ambient gradient (violet base + warm sunrise) ---------- */
/* Fixed, full-page wash applied to every page. */
body::before{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:
    radial-gradient(55% 42% at 50% -4%, rgba(249,115,22,.18), transparent 70%),
    radial-gradient(42% 34% at 88% 16%, rgba(251,191,36,.12), transparent 70%),
    radial-gradient(95% 60% at 50% 104%, rgba(255,94,77,.14), transparent 72%);
}
[data-theme="light"] body::before{
  background:
    radial-gradient(60% 46% at 50% -2%, rgba(251,191,36,.22), transparent 70%),
    radial-gradient(45% 35% at 90% 14%, rgba(249,115,22,.14), transparent 70%),
    radial-gradient(100% 64% at 50% 106%, rgba(255,138,92,.20), transparent 72%);
}

/* ---------- Animated starfield canvas (behind gradient) ---------- */
#stars{position:fixed;inset:0;width:100%;height:100%;z-index:-2;pointer-events:none}

/* ---------- Brand ---------- */
.brand{display:flex;align-items:center;gap:11px;font-family:'Space Grotesk';font-weight:700;font-size:1.12rem;letter-spacing:-.02em}
.brand .mark{width:32px;height:32px;border-radius:9px;background:var(--grad);display:grid;place-items:center;
  box-shadow:0 6px 18px -4px var(--glow);position:relative;flex:0 0 auto}
.brand .mark svg{width:18px;height:18px}

/* ---------- Nav (fixed variant, used by home + article) ---------- */
.nav{position:fixed;top:0;left:0;right:0;height:var(--nav-h);z-index:100;display:flex;align-items:center;
  transition:background .4s var(--ease),border-color .4s var(--ease),box-shadow .4s var(--ease)}
.nav.scrolled{background:color-mix(in srgb,var(--bg) 72%,transparent);backdrop-filter:blur(16px) saturate(160%);
  -webkit-backdrop-filter:blur(16px) saturate(160%);border-bottom:1px solid var(--border)}
.nav .container{display:flex;align-items:center;justify-content:space-between;gap:20px}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{position:relative;padding:8px 14px;border-radius:10px;color:var(--muted);font-size:.92rem;font-weight:500;transition:color .2s,background .2s}
.nav-links a:hover{color:var(--text);background:var(--surface)}
.nav-links a.active{color:var(--text)}
.nav-links a.active::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--grad)}
.nav-cta{display:flex;align-items:center;gap:10px}
.icon-btn{width:38px;height:38px;border-radius:10px;border:1px solid var(--border);background:var(--surface);color:var(--text);
  display:grid;place-items:center;cursor:pointer;transition:transform .2s,border-color .2s,background .2s}
.icon-btn:hover{border-color:var(--border-strong);transform:translateY(-1px)}
.icon-btn svg{width:18px;height:18px}
.theme-toggle .sun{display:none}
[data-theme="light"] .theme-toggle .sun{display:block}
[data-theme="light"] .theme-toggle .moon{display:none}
.hamburger{display:none}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:9px;font-weight:600;font-size:.95rem;padding:13px 24px;border-radius:12px;
  cursor:pointer;border:1px solid transparent;transition:transform .2s var(--ease),box-shadow .3s,background .3s,border-color .3s;white-space:nowrap}
.btn svg{width:17px;height:17px}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 12px 30px -10px var(--glow)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 40px -12px var(--glow)}
.btn-ghost{background:var(--surface);color:var(--text);border-color:var(--border)}
.btn-ghost:hover{border-color:var(--border-strong);transform:translateY(-2px);background:var(--surface-2)}
.btn-sm{padding:9px 16px;font-size:.86rem}

/* ---------- Shared atoms ---------- */
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.78rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;
  color:var(--brand);padding:6px 14px;border-radius:999px;border:1px solid var(--border);background:var(--surface);margin-bottom:20px}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 8px var(--brand)}

.chip{font-size:.82rem;font-weight:500;padding:7px 13px;border-radius:9px;border:1px solid var(--border);background:var(--surface);color:var(--muted);transition:all .25s}
.chip:hover{color:var(--text);border-color:var(--brand);transform:translateY(-2px)}
.badge{font-size:.76rem;font-family:'JetBrains Mono';padding:5px 11px;border-radius:8px;border:1px solid var(--border);color:var(--muted)}
.pill{font-size:.85rem;font-weight:500;padding:9px 15px;border-radius:10px;border:1px solid var(--border);background:var(--surface);color:var(--muted);cursor:pointer;transition:all .2s}
.pill:hover{color:var(--text);border-color:var(--border-strong)}
.pill.active{background:var(--grad);color:#fff;border-color:transparent}

/* ---------- Card ---------- */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:26px;position:relative;overflow:hidden;
  transition:transform .35s var(--ease),border-color .35s,box-shadow .35s,background .35s}
.card:hover{transform:translateY(-5px);border-color:var(--border-strong);box-shadow:var(--shadow)}
.card::before{content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;pointer-events:none;
  background:linear-gradient(130deg,var(--brand),transparent 40%);
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;opacity:0;transition:opacity .35s}
.card:hover::before{opacity:.7}