/* ==========================================================================
   CSS Tools Hub — Design System v2
   Modern, dev-grade UI. Dark-first, gradient accents, glass surfaces.
   Class contracts are kept stable so all generated pages benefit at once.
   ========================================================================== */

/* ---------- Design Tokens ---------- */
:root {
  /* Brand */
  --brand-50:#eff6ff; --brand-100:#dbeafe; --brand-200:#bfdbfe; --brand-300:#93c5fd;
  --brand-400:#60a5fa; --brand-500:#3b82f6; --brand-600:#2563eb; --brand-700:#1d4ed8;
  --brand-800:#1e40af; --brand-900:#1e3a8a;
  --accent-400:#a78bfa; --accent-500:#8b5cf6; --accent-600:#7c3aed;
  --cyan-400:#22d3ee;

  /* Neutrals */
  --gray-50:#f8fafc; --gray-100:#f1f5f9; --gray-200:#e2e8f0; --gray-300:#cbd5e1;
  --gray-400:#94a3b8; --gray-500:#64748b; --gray-600:#475569; --gray-700:#334155;
  --gray-800:#1e293b; --gray-900:#0f172a; --gray-950:#020617;

  /* Semantic — light */
  --bg:#ffffff;
  --bg-2:#f6f8fc;
  --bg-elevated:#ffffff;
  --bg-subtle:var(--gray-100);
  --surface:#ffffff;
  --surface-2:var(--gray-50);
  --surface-glass:rgba(255,255,255,.72);
  --border:#e6eaf2;
  --border-strong:var(--gray-300);
  --text:var(--gray-900);
  --text-muted:var(--gray-500);
  --text-soft:var(--gray-600);
  --primary:var(--brand-600);
  --primary-hover:var(--brand-700);
  --primary-soft:var(--brand-50);
  --on-primary:#ffffff;
  --success:#16a34a; --danger:#dc2626; --warning:#d97706;

  --grad-brand:linear-gradient(135deg,var(--brand-500),var(--accent-500));
  --grad-text:linear-gradient(120deg,#1d4ed8,#7c3aed 60%,#2563eb);
  --glow:0 0 0 1px rgba(37,99,235,.15), 0 8px 30px rgba(37,99,235,.18);

  --ring:0 0 0 3px rgba(37,99,235,.35);
  --shadow-sm:0 1px 2px rgba(15,23,42,.06);
  --shadow-md:0 6px 18px rgba(15,23,42,.08);
  --shadow-lg:0 1px 2px rgba(15,23,42,.06), 0 18px 48px rgba(15,23,42,.14);

  --radius-sm:10px; --radius:14px; --radius-lg:20px; --radius-full:999px;
  --container:1200px; --header-h:66px;

  --font-sans:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --ease:cubic-bezier(.4,0,.2,1);
  --ease-out:cubic-bezier(.16,1,.3,1);

  --dot:rgba(15,23,42,.05);
}

[data-theme="dark"] {
  --bg:#070b14;
  --bg-2:#0a0f1c;
  --bg-elevated:#0b1120;
  --bg-subtle:#111a2e;
  --surface:#0c1322;
  --surface-2:#0a1120;
  --surface-glass:rgba(12,19,34,.66);
  --border:#1b2740;
  --border-strong:#2a3a59;
  --text:#eef2f9;
  --text-muted:#8a99b5;
  --text-soft:#aebaccd6;
  --text-soft:#b6c2d8;
  --primary:var(--brand-500);
  --primary-hover:var(--brand-400);
  --primary-soft:rgba(59,130,246,.12);
  --on-primary:#ffffff;
  --grad-text:linear-gradient(120deg,#60a5fa,#a78bfa 55%,#22d3ee);
  --glow:0 0 0 1px rgba(96,165,250,.18), 0 10px 40px rgba(59,130,246,.22);
  --shadow-sm:0 1px 2px rgba(0,0,0,.5);
  --shadow-md:0 6px 18px rgba(0,0,0,.5);
  --shadow-lg:0 1px 2px rgba(0,0,0,.5), 0 24px 60px rgba(0,0,0,.6);
  --dot:rgba(148,163,184,.07);
}

/* ---------- Reset / Base ---------- */
*,*::before,*::after{box-sizing:border-box}
*{margin:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-sans);
  background:var(--bg);
  color:var(--text);
  line-height:1.65;
  font-size:16px;
  min-height:100vh;
  display:flex;flex-direction:column;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  transition:background-color .3s var(--ease),color .3s var(--ease);
  background-image:
    radial-gradient(60% 50% at 50% -10%, rgba(59,130,246,.10), transparent 60%),
    radial-gradient(40% 40% at 100% 0%, rgba(139,92,246,.08), transparent 60%);
  background-repeat:no-repeat;
}
[data-theme="dark"] body{
  background-image:
    radial-gradient(60% 50% at 50% -10%, rgba(59,130,246,.14), transparent 60%),
    radial-gradient(40% 40% at 100% 0%, rgba(139,92,246,.12), transparent 60%);
}
img,svg{display:block;max-width:100%}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
::selection{background:rgba(59,130,246,.28)}

h1,h2,h3,h4{line-height:1.15;font-weight:800;letter-spacing:-.025em}
h1{font-size:clamp(2.1rem,1.3rem+3vw,3.6rem)}
h2{font-size:clamp(1.5rem,1.1rem+1.6vw,2.25rem)}
h3{font-size:1.2rem}
p{color:var(--text-soft)}

:focus-visible{outline:none;box-shadow:var(--ring);border-radius:var(--radius-sm)}

.skip-link{position:absolute;left:8px;top:-60px;z-index:200;background:var(--primary);color:#fff;padding:10px 16px;border-radius:var(--radius-sm);transition:top .2s var(--ease)}
.skip-link:focus{top:8px}

/* ---------- Layout ---------- */
.container{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:clamp(1rem,.5rem+2vw,2rem)}
main{flex:1 0 auto}
.section{padding-block:clamp(2.5rem,1.5rem+4vw,5.5rem)}
.stack>*+*{margin-top:1rem}
.grid{display:grid;gap:1.25rem}
.muted{color:var(--text-muted)}
.center{text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:.5rem;
  color:var(--primary);font-weight:700;font-size:.8rem;letter-spacing:.04em;text-transform:uppercase;
}
.eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:currentColor;opacity:.6}
.gradient-text{background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent}

/* dotted backdrop helper */
.dotted{background-image:radial-gradient(var(--dot) 1px,transparent 1px);background-size:22px 22px}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:var(--surface-glass);
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--border);
  transition:box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.site-header.scrolled{box-shadow:var(--shadow-md)}
.nav{display:flex;align-items:center;gap:1rem;height:var(--header-h)}
.brand{display:inline-flex;align-items:center;gap:.6rem;font-weight:800;font-size:1.06rem;color:var(--text);letter-spacing:-.02em}
.brand:hover{text-decoration:none}
.brand .logo{
  width:32px;height:32px;border-radius:10px;background:var(--grad-brand);
  display:grid;place-items:center;color:#fff;font-size:.95rem;font-weight:900;font-family:var(--font-mono);
  box-shadow:0 4px 14px rgba(59,130,246,.45)
}
.nav-links{display:flex;align-items:center;gap:.15rem;margin-left:auto;list-style:none;padding:0}
.nav-links li{display:inline-flex;margin:0}
.nav-links a{
  color:var(--text-soft);font-weight:600;font-size:.92rem;
  padding:.5rem .85rem;border-radius:var(--radius-sm);
  transition:background-color .15s,color .15s
}
.nav-links a:hover{background:var(--bg-subtle);color:var(--text);text-decoration:none}
.nav-actions{display:flex;align-items:center;gap:.5rem;margin-left:.5rem}
.lang-switch{display:inline-flex;gap:.15rem;border:1px solid var(--border);border-radius:var(--radius-sm);padding:.2rem;background:var(--surface)}
.lang-switch a{font-size:.78rem;font-weight:700;color:var(--text-soft);padding:.3rem .55rem;border-radius:7px;line-height:1}
.lang-switch a:hover{background:var(--bg-subtle);text-decoration:none;color:var(--text)}
.lang-switch a[aria-current]{background:var(--primary);color:#fff}
.icon-btn{
  display:inline-grid;place-items:center;width:40px;height:40px;
  border:1px solid var(--border);background:var(--surface);color:var(--text);
  border-radius:var(--radius-sm);cursor:pointer;
  transition:background-color .15s,transform .15s,border-color .15s
}
.icon-btn:hover{background:var(--bg-subtle);border-color:var(--border-strong)}
.icon-btn:active{transform:scale(.94)}
.theme-toggle .sun{display:none}
[data-theme="dark"] .theme-toggle .sun{display:block}
[data-theme="dark"] .theme-toggle .moon{display:none}
.nav-toggle{display:none}

@media (max-width:880px){
  .nav-links{
    position:fixed;inset:var(--header-h) 0 auto 0;flex-direction:column;align-items:stretch;gap:.2rem;
    background:var(--bg-elevated);border-bottom:1px solid var(--border);padding:1rem;box-shadow:var(--shadow-lg);
    transform:translateY(-12px);opacity:0;pointer-events:none;transition:.22s var(--ease)
  }
  .nav-links.open{transform:none;opacity:1;pointer-events:auto}
  .nav-toggle{display:inline-grid;order:3}
}

/* ---------- Buttons ---------- */
.btn{
  position:relative;display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  min-height:2.85rem;padding:0 1.35rem;border-radius:var(--radius-full);
  font-weight:700;font-size:.95rem;cursor:pointer;border:1px solid transparent;font-family:inherit;
  transition:transform .18s var(--ease),box-shadow .22s var(--ease),background-color .18s,border-color .18s,color .18s;
  text-decoration:none;white-space:nowrap
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:0 10px 24px rgba(59,130,246,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 36px rgba(59,130,246,.45);text-decoration:none}
.btn-ghost{background:var(--surface);color:var(--text);border-color:var(--border)}
.btn-ghost:hover{background:var(--bg-subtle);border-color:var(--border-strong);text-decoration:none;transform:translateY(-1px)}
.btn-sm{min-height:2.3rem;padding:0 .95rem;font-size:.85rem}
.btn-block{width:100%}

/* ---------- Cards ---------- */
.card{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-lg);padding:1.6rem;box-shadow:var(--shadow-sm)
}

/* Tool cards (homepage) */
.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(264px,1fr));gap:1rem}
.tool-card{
  position:relative;display:flex;flex-direction:column;gap:.5rem;
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius);padding:1.3rem;box-shadow:var(--shadow-sm);
  transition:transform .2s var(--ease-out),box-shadow .2s var(--ease-out),border-color .2s;
  color:var(--text);overflow:hidden;isolation:isolate
}
.tool-card::after{
  content:"";position:absolute;inset:0;z-index:-1;opacity:0;transition:opacity .25s var(--ease);
  background:radial-gradient(120% 80% at 100% 0%, rgba(59,130,246,.10), transparent 55%)
}
.tool-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:rgba(59,130,246,.45);text-decoration:none}
.tool-card:hover::after{opacity:1}
.tool-card .ico{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:var(--primary-soft);color:var(--primary);font-size:1.3rem;
  border:1px solid var(--border)
}
.tool-card h3{font-size:1.04rem;display:flex;align-items:center;justify-content:space-between;gap:.5rem}
.tool-card h3::after{content:"→";color:var(--primary);opacity:0;transform:translateX(-6px);transition:.2s var(--ease)}
.tool-card:hover h3::after{opacity:1;transform:translateX(0)}
.tool-card p{font-size:.88rem;color:var(--text-muted);margin:0}
.tool-card .tag{font-size:.7rem;font-weight:700;color:var(--primary);text-transform:uppercase;letter-spacing:.06em}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding-block:clamp(3rem,2rem+6vw,6.5rem)}
.hero .container{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:3rem;align-items:center}
@media (max-width:920px){.hero-grid{grid-template-columns:1fr;gap:2rem;text-align:center}}
.hero h1{max-width:16ch;margin-bottom:0}
@media (max-width:920px){.hero h1{margin-inline:auto}}
.hero p.lead{max-width:54ch;margin-top:1.1rem;font-size:1.12rem;color:var(--text-soft)}
@media (max-width:920px){.hero p.lead{margin-inline:auto}}
.hero-actions{display:flex;gap:.75rem;flex-wrap:wrap;margin-top:1.9rem}
@media (max-width:920px){.hero-actions{justify-content:center}}
.hero::before{
  content:"";position:absolute;inset:0;z-index:0;
  background:radial-gradient(45% 45% at 18% 12%, rgba(59,130,246,.16), transparent 60%),
             radial-gradient(40% 40% at 85% 30%, rgba(139,92,246,.16), transparent 60%);
  pointer-events:none
}

.badge-row{display:flex;gap:.5rem;flex-wrap:wrap;margin-top:1.6rem}
@media (max-width:920px){.badge-row{justify-content:center}}
.pill{
  display:inline-flex;align-items:center;gap:.4rem;
  font-size:.8rem;font-weight:600;color:var(--text-soft);
  background:var(--surface);border:1px solid var(--border);padding:.4rem .85rem;border-radius:var(--radius-full)
}

/* Hero code/preview card */
.hero-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-lg);overflow:hidden
}
.hero-card .bar{display:flex;align-items:center;gap:.45rem;padding:.8rem 1rem;border-bottom:1px solid var(--border);background:var(--surface-2)}
.hero-card .bar i{width:11px;height:11px;border-radius:50%;display:block}
.dot-r{background:#ff5f57}.dot-y{background:#febc2e}.dot-g{background:#28c840}
.hero-card .bar span{margin-left:.5rem;font-family:var(--font-mono);font-size:.78rem;color:var(--text-muted)}
.hero-card .demo{padding:1.6rem;display:grid;place-items:center;min-height:170px;background:var(--bg-2)}
.hero-card pre{margin:0;padding:1.1rem 1.2rem;font-family:var(--font-mono);font-size:.82rem;line-height:1.7;color:var(--text-soft);overflow:auto;border-top:1px solid var(--border)}
.hero-card .tok-k{color:#c084fc}.hero-card .tok-p{color:#60a5fa}.hero-card .tok-v{color:#34d399}.hero-card .tok-c{color:var(--text-muted)}

/* ---------- Stats strip ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem}
@media (max-width:680px){.stats{grid-template-columns:repeat(2,1fr)}}
.stat{text-align:center;padding:1.2rem 1rem;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface)}
.stat b{display:block;font-size:1.8rem;font-weight:800;background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{font-size:.82rem;color:var(--text-muted);font-weight:600}

/* ---------- Tool Page Layout ---------- */
.breadcrumb{font-size:.85rem;color:var(--text-muted);padding-block:1rem}
.breadcrumb a{color:var(--text-muted)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb [aria-current]{color:var(--text-soft)}

.tool-header{padding-block:.5rem 1.5rem}
.tool-header h1{margin-bottom:.6rem;font-size:clamp(1.8rem,1.3rem+1.8vw,2.6rem)}
.tool-header p{max-width:72ch;font-size:1.06rem}

.tool-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:1.5rem;align-items:start}
@media (max-width:900px){.tool-layout{grid-template-columns:1fr}}

.panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.6rem;box-shadow:var(--shadow-sm)}
.panel-title{font-size:.78rem;font-weight:700;margin-bottom:1.1rem;color:var(--text-muted);letter-spacing:.08em;text-transform:uppercase}

/* Preview surface */
.preview{
  min-height:280px;border-radius:var(--radius);border:1px solid var(--border);
  display:grid;place-items:center;padding:2rem;overflow:hidden;
  background:
    linear-gradient(45deg,var(--bg-subtle) 25%,transparent 25%) -10px 0/22px 22px,
    linear-gradient(-45deg,var(--bg-subtle) 25%,transparent 25%) -10px 0/22px 22px,
    linear-gradient(45deg,transparent 75%,var(--bg-subtle) 75%) -10px 0/22px 22px,
    linear-gradient(-45deg,transparent 75%,var(--bg-subtle) 75%) -10px 0/22px 22px,
    var(--surface-2)
}
.preview-box{width:180px;height:120px;background:var(--surface);border-radius:var(--radius);display:grid;place-items:center;color:var(--text-muted);font-weight:600}

/* Controls */
.control{margin-bottom:1.15rem}
.control:last-child{margin-bottom:0}
.control label{display:flex;justify-content:space-between;align-items:center;font-size:.85rem;font-weight:600;color:var(--text-soft);margin-bottom:.45rem}
.control label .val{font-family:var(--font-mono);color:var(--primary);font-weight:700}

input[type="range"]{-webkit-appearance:none;appearance:none;width:100%;height:6px;background:var(--bg-subtle);border-radius:var(--radius-full);cursor:pointer;outline-offset:4px}
input[type="range"]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:18px;height:18px;border-radius:50%;background:var(--primary);border:2px solid var(--surface);box-shadow:var(--shadow-sm);cursor:pointer;transition:transform .12s}
input[type="range"]::-webkit-slider-thumb:hover{transform:scale(1.15)}
input[type="range"]::-moz-range-thumb{width:18px;height:18px;border-radius:50%;background:var(--primary);border:2px solid var(--surface);cursor:pointer}

input[type="text"],input[type="number"],input[type="email"],select,textarea{
  width:100%;padding:.7rem .85rem;font-family:inherit;font-size:.92rem;
  background:var(--surface-2);color:var(--text);border:1px solid var(--border);border-radius:var(--radius-sm);
  transition:border-color .15s,box-shadow .15s
}
input:focus,select:focus,textarea:focus{border-color:var(--primary);box-shadow:var(--ring);outline:none}
textarea{resize:vertical;min-height:200px;font-family:var(--font-mono);font-size:.85rem;line-height:1.55}
input[type="color"]{width:100%;height:44px;padding:4px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface-2);cursor:pointer}

.field-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(110px,1fr));gap:.75rem}
.seg{display:inline-flex;flex-wrap:wrap;gap:.3rem;background:var(--bg-subtle);padding:.3rem;border-radius:var(--radius-sm)}
.seg button{flex:1;min-width:max-content;padding:.45rem .7rem;border:none;background:transparent;color:var(--text-soft);font-family:inherit;font-weight:600;font-size:.85rem;border-radius:8px;cursor:pointer;transition:background-color .15s,color .15s}
.seg button.active{background:var(--surface);color:var(--primary);box-shadow:var(--shadow-sm)}

/* ---------- Code output + tabs ---------- */
.code-block{position:relative;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;background:#0a0f1c}
.code-tabs{display:flex;gap:0;background:#0d1426;border-bottom:1px solid #1b2740;padding:.4rem .4rem 0}
.code-tabs button{padding:.55rem .95rem;border:none;background:transparent;color:#8a99b5;font-family:var(--font-mono);font-weight:600;font-size:.8rem;border-radius:8px 8px 0 0;cursor:pointer;transition:background-color .15s,color .15s}
.code-tabs button:hover{color:#cbd5e1}
.code-tabs button.active{background:#0a0f1c;color:#60a5fa}
pre.code{background:#0a0f1c;color:#e2e8f0;border:none;padding:1.15rem 1.2rem;overflow:auto;font-family:var(--font-mono);font-size:.85rem;line-height:1.65;margin:0;max-height:420px}
.code-toolbar{display:flex;justify-content:flex-end;gap:.5rem;padding:.7rem;background:#0d1426;border-top:1px solid #1b2740}
/* standalone output blocks (converters/minifiers) keep editor look */
#output.code{border:1px solid var(--border);border-radius:var(--radius)}
.copy-btn{position:relative}
.copy-btn.copied{background:var(--success);color:#fff;border-color:var(--success)}

/* ---------- Toast ---------- */
.toast{
  position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(20px);
  background:var(--gray-900);color:#fff;padding:.85rem 1.25rem;border-radius:var(--radius-full);
  font-weight:600;font-size:.9rem;box-shadow:var(--shadow-lg);z-index:300;
  opacity:0;pointer-events:none;transition:.25s var(--ease-out);display:flex;align-items:center;gap:.5rem
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
[data-theme="dark"] .toast{background:#fff;color:var(--gray-900)}
.toast svg{color:var(--success)}

/* ---------- Ad slots ---------- */
.ad-slot{
  display:flex;align-items:center;justify-content:center;min-height:90px;margin-block:1.5rem;
  background:var(--surface-2);border:1px dashed var(--border-strong);border-radius:var(--radius);
  color:var(--text-muted);font-size:.75rem;text-transform:uppercase;letter-spacing:.1em;font-weight:600
}
.ad-slot::before{content:"Publicité"}
.ad-sidebar{min-height:600px;flex-direction:column}
@media (max-width:900px){.ad-sidebar{min-height:120px}}

/* ---------- Related tools (internal linking / SEO) ---------- */
.related{margin-top:2rem}
.related h2{margin-bottom:1rem}
.related-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:.85rem}
.related-grid a{
  display:flex;align-items:center;gap:.65rem;padding:.85rem 1rem;border:1px solid var(--border);
  border-radius:var(--radius);background:var(--surface);color:var(--text);font-weight:600;font-size:.92rem;
  transition:border-color .18s,transform .18s,box-shadow .18s
}
.related-grid a:hover{border-color:rgba(59,130,246,.45);transform:translateY(-2px);box-shadow:var(--shadow-md);text-decoration:none}
.related-grid .ri{width:34px;height:34px;border-radius:9px;display:grid;place-items:center;background:var(--primary-soft);color:var(--primary);font-size:1.05rem;flex:none}

/* ---------- Content sections (guide / faq) ---------- */
.prose{max-width:75ch}
.prose h2{margin-top:2.5rem;margin-bottom:.75rem}
.prose h3{margin-top:1.5rem;margin-bottom:.5rem}
.prose p,.prose li{color:var(--text-soft)}
.prose ul,.prose ol{padding-left:1.4rem}
.prose li+li{margin-top:.35rem}
.prose code{background:var(--bg-subtle);padding:.15em .4em;border-radius:6px;font-family:var(--font-mono);font-size:.85em;color:var(--primary)}
.prose pre.code{border:1px solid var(--border);border-radius:var(--radius);margin:1rem 0}

.faq-item{border:1px solid var(--border);border-radius:var(--radius);margin-bottom:.75rem;background:var(--surface);overflow:hidden}
.faq-item summary{cursor:pointer;padding:1rem 1.25rem;font-weight:700;list-style:none;display:flex;justify-content:space-between;gap:1rem;align-items:center}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:1.4rem;color:var(--primary);transition:transform .2s}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item[open]{border-color:rgba(59,130,246,.35)}
.faq-item .faq-body{padding:0 1.25rem 1.1rem}
.faq-item .faq-body p{margin:0}

/* ---------- Footer ---------- */
.site-footer{background:var(--bg-elevated);border-top:1px solid var(--border);padding-block:3.2rem 2rem;margin-top:3.5rem}
.footer-grid{display:grid;grid-template-columns:1.6fr repeat(3,1fr);gap:2rem}
@media (max-width:760px){.footer-grid{grid-template-columns:1fr 1fr}}
.footer-col h4{font-size:.8rem;text-transform:uppercase;letter-spacing:.07em;color:var(--text-muted);margin-bottom:.9rem;font-weight:700}
.footer-col a{display:block;color:var(--text-soft);font-size:.9rem;padding:.25rem 0}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;margin-top:2.5rem;padding-top:1.5rem;border-top:1px solid var(--border);color:var(--text-muted);font-size:.85rem}

/* ---------- Section heading helper ---------- */
.section-head{text-align:center;max-width:62ch;margin:0 auto 2.5rem}
.section-head p{margin-top:.6rem}

/* ---------- Reveal on scroll (progressive enhancement only) ---------- */
/* Hidden only when JS is active; never hides content for no-JS or if the
   observer fails to fire — JS also force-reveals everything as a fallback. */
.js .reveal{opacity:0;transform:translateY(18px);transition:opacity .6s var(--ease-out),transform .6s var(--ease-out)}
.js .reveal.in{opacity:1;transform:none}

/* ---------- Utilities ---------- */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}
.mt-0{margin-top:0}.mt-1{margin-top:1rem}.mt-2{margin-top:2rem}
.flex{display:flex}.gap-1{gap:1rem}.wrap{flex-wrap:wrap}.items-center{align-items:center}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}