/* =========================================================
   QRForge — design tokens
   Concept: a QR code is a printed, permanent artifact — like
   a plate etched at a workshop — while the destination behind
   it is a live pointer that can be redrawn at any time. The
   visual language borrows from technical drafting paper:
   blueprint navy, crop marks, dashed measurement lines, and a
   brass "stamp" accent for the one thing that's fixed forever
   (the QR ID) versus the thing that flows (the destination).
   ========================================================= */

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

:root{
  --ink-900:#0f1b33;      /* blueprint navy, deep */
  --ink-800:#16264a;
  --ink-700:#203058;
  --line:#3a4d82;         /* blueprint gridlines */
  --paper:#f6f5f0;        /* drafting paper, light mode bg */
  --paper-dim:#eceae2;
  --brass:#c89b3c;        /* the one fixed thing: stamped brass */
  --brass-bright:#e0b654;
  --ok:#4f9d69;
  --warn:#c8703c;
  --danger:#c1483f;
  --text-on-dark:#eef1fb;
  --text-on-dark-dim:#aab4d6;
  --text-on-light:#141b2e;
  --text-on-light-dim:#4d5670;
  --radius:10px;
  --radius-sm:6px;
  --font-display:'Space Grotesk', system-ui, sans-serif;
  --font-body:'Inter', system-ui, sans-serif;
  --font-mono:'IBM Plex Mono', ui-monospace, monospace;
  --shadow:0 8px 30px -12px rgba(15,27,51,.35);
  color-scheme: light;
}

[data-theme="dark"]{
  color-scheme: dark;
  --paper:#0f1b33;
  --paper-dim:#0c1529;
  --text-on-light:#eef1fb;
  --text-on-light-dim:#aab4d6;
  --line:#2a3a68;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:
    linear-gradient(var(--line) 1px, transparent 1px) 0 0/40px 40px,
    linear-gradient(90deg, var(--line) 1px, transparent 1px) 0 0/40px 40px,
    var(--paper);
  background-attachment:fixed;
  color:var(--text-on-light);
  font-family:var(--font-body);
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
}
[data-theme="dark"] body{
  background:
    linear-gradient(rgba(58,77,130,.35) 1px, transparent 1px) 0 0/40px 40px,
    linear-gradient(90deg, rgba(58,77,130,.35) 1px, transparent 1px) 0 0/40px 40px,
    var(--paper);
}

h1,h2,h3,.display{ font-family:var(--font-display); letter-spacing:-0.01em; margin:0 0 .4em; }
h1{ font-size:clamp(2rem, 4.2vw, 3.4rem); font-weight:700; line-height:1.05; }
h2{ font-size:clamp(1.4rem, 2.4vw, 2rem); font-weight:600; }
h3{ font-size:1.15rem; font-weight:600; }
p{ margin:0 0 1em; color:var(--text-on-light-dim); }
code, .mono, .qr-id{ font-family:var(--font-mono); }
a{ color:inherit; }

:focus-visible{ outline:2px solid var(--brass); outline-offset:2px; }

.container{ max-width:1080px; margin:0 auto; padding:0 24px; }

/* ---------- top nav ---------- */
.topbar{
  position:sticky; top:0; z-index:20;
  backdrop-filter:blur(8px);
  background:color-mix(in srgb, var(--paper) 88%, transparent);
  border-bottom:1px solid var(--line);
}
.topbar-inner{ display:flex; align-items:center; justify-content:space-between; padding:14px 24px; max-width:1080px; margin:0 auto; }
.brand{ display:flex; align-items:center; gap:10px; text-decoration:none; font-family:var(--font-display); font-weight:700; font-size:1.15rem; color:var(--text-on-light); }
.brand-mark{
  width:30px; height:30px; border-radius:6px;
  background:
    linear-gradient(135deg, var(--brass), var(--brass-bright));
  display:grid; place-items:center; color:var(--ink-900); font-weight:700; font-size:.8rem;
  box-shadow:inset 0 0 0 2px rgba(15,27,51,.25);
}
.nav-links{ display:flex; gap:22px; align-items:center; font-size:.92rem; font-weight:500; }
.nav-links a{ text-decoration:none; color:var(--text-on-light-dim); transition:color .15s; }
.nav-links a:hover, .nav-links a[aria-current="page"]{ color:var(--text-on-light); }
.theme-toggle{
  border:1px solid var(--line); background:transparent; color:var(--text-on-light);
  border-radius:999px; width:34px; height:34px; cursor:pointer; font-size:.95rem;
  display:grid; place-items:center;
}
.nav-mobile-toggle{ display:none; }

/* ---------- buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  font-family:var(--font-body); font-weight:600; font-size:.95rem;
  padding:12px 22px; border-radius:var(--radius-sm); border:1px solid transparent;
  cursor:pointer; text-decoration:none; transition:transform .12s, box-shadow .12s, background .15s;
}
.btn:active{ transform:translateY(1px); }
.btn-primary{ background:var(--brass); color:var(--ink-900); box-shadow:var(--shadow); }
.btn-primary:hover{ background:var(--brass-bright); }
.btn-outline{ background:transparent; border-color:var(--line); color:var(--text-on-light); }
.btn-outline:hover{ border-color:var(--brass); color:var(--brass); }
.btn-ghost{ background:transparent; color:var(--text-on-light-dim); }
.btn-danger{ background:transparent; border-color:var(--danger); color:var(--danger); }
.btn-danger:hover{ background:var(--danger); color:#fff; }
.btn[disabled]{ opacity:.5; cursor:not-allowed; }
.btn-sm{ padding:8px 14px; font-size:.85rem; }
.btn-block{ width:100%; }

/* ---------- hero ---------- */
.hero{ padding:88px 0 60px; }
.hero-grid{ display:grid; grid-template-columns:1.1fr 0.9fr; gap:56px; align-items:center; }
.eyebrow{
  display:inline-flex; align-items:center; gap:8px; font-family:var(--font-mono);
  font-size:.75rem; letter-spacing:.08em; text-transform:uppercase; color:var(--brass);
  border:1px dashed var(--brass); border-radius:999px; padding:5px 12px; margin-bottom:18px;
}
.hero-actions{ display:flex; gap:12px; flex-wrap:wrap; margin-top:28px; }
.hero-features{ list-style:none; padding:0; margin:32px 0 0; display:grid; grid-template-columns:1fr 1fr; gap:10px 20px; }
.hero-features li{ font-size:.92rem; color:var(--text-on-light-dim); display:flex; gap:8px; align-items:baseline; }
.hero-features li::before{ content:"✓"; color:var(--ok); font-weight:700; }

/* ---------- signature: the stamp plate ---------- */
.plate{
  position:relative; background:var(--ink-900); border-radius:16px; padding:32px;
  box-shadow:var(--shadow); color:var(--text-on-dark);
  border:1px solid var(--ink-700);
}
.plate::before{
  content:""; position:absolute; inset:10px; border:1px dashed rgba(238,241,251,.25); border-radius:10px; pointer-events:none;
}
.plate-crop{ position:absolute; width:14px; height:14px; }
.plate-crop.tl{ top:-1px; left:-1px; border-top:2px solid var(--brass); border-left:2px solid var(--brass); }
.plate-crop.tr{ top:-1px; right:-1px; border-top:2px solid var(--brass); border-right:2px solid var(--brass); }
.plate-crop.bl{ bottom:-1px; left:-1px; border-bottom:2px solid var(--brass); border-left:2px solid var(--brass); }
.plate-crop.br{ bottom:-1px; right:-1px; border-bottom:2px solid var(--brass); border-right:2px solid var(--brass); }
.plate-qr{ background:#fff; border-radius:8px; padding:14px; display:grid; place-items:center; }
.plate-qr img, .plate-qr canvas, .plate-qr svg{ display:block; width:100%; height:auto; max-width:220px; }
.plate-meta{ display:flex; justify-content:space-between; align-items:center; margin-top:18px; font-size:.8rem; }
.plate-id{ color:var(--brass-bright); font-family:var(--font-mono); }
.plate-flow{ display:flex; align-items:center; gap:8px; margin-top:14px; font-family:var(--font-mono); font-size:.78rem; color:var(--text-on-dark-dim); }
.plate-flow .dest{ color:var(--text-on-dark); transition:opacity .25s; }
.plate-dash{ flex:1; border-top:1px dashed rgba(238,241,251,.3); }

/* ---------- sections ---------- */
.section{ padding:60px 0; }
.section-head{ max-width:640px; margin:0 auto 36px; text-align:center; }
.section-head p{ margin:0; }

.card{
  background:color-mix(in srgb, var(--paper) 92%, var(--ink-900) 3%);
  border:1px solid var(--line); border-radius:var(--radius);
  padding:24px;
}
[data-theme="dark"] .card{ background:var(--ink-800); }

.grid-3{ display:grid; grid-template-columns:repeat(3,1fr); gap:18px; }
.grid-2{ display:grid; grid-template-columns:1fr 1fr; gap:18px; }

.feature-num{ font-family:var(--font-mono); color:var(--brass); font-size:.8rem; margin-bottom:10px; display:block; }

/* ---------- generator layout ---------- */
.gen-layout{ display:grid; grid-template-columns:1fr 380px; gap:32px; align-items:start; margin-top:32px; }
.gen-preview{ position:sticky; top:90px; }
.field{ margin-bottom:18px; }
.field label{ display:block; font-size:.85rem; font-weight:600; margin-bottom:6px; }
.field .hint{ font-size:.8rem; color:var(--text-on-light-dim); margin-top:6px; }
input[type="text"], input[type="url"], input[type="number"], input[type="password"], select{
  width:100%; padding:11px 13px; border-radius:var(--radius-sm); border:1px solid var(--line);
  background:var(--paper); color:var(--text-on-light); font-family:var(--font-body); font-size:.95rem;
}
input[type="color"]{ width:100%; height:42px; border-radius:var(--radius-sm); border:1px solid var(--line); background:none; padding:2px; }
input:focus, select:focus{ border-color:var(--brass); }
.row-2{ display:grid; grid-template-columns:1fr 1fr; gap:12px; }
.status-pill{
  display:inline-flex; align-items:center; gap:6px; font-size:.75rem; font-weight:600;
  padding:4px 10px; border-radius:999px; font-family:var(--font-mono);
}
.status-active{ background:color-mix(in srgb, var(--ok) 18%, transparent); color:var(--ok); }
.status-draft{ background:color-mix(in srgb, var(--warn) 18%, transparent); color:var(--warn); }
.status-error{ background:color-mix(in srgb, var(--danger) 18%, transparent); color:var(--danger); }

/* ---------- tables ---------- */
table{ width:100%; border-collapse:collapse; font-size:.9rem; }
th, td{ text-align:left; padding:12px 10px; border-bottom:1px solid var(--line); }
th{ font-family:var(--font-mono); font-size:.72rem; text-transform:uppercase; letter-spacing:.05em; color:var(--text-on-light-dim); }
tr:last-child td{ border-bottom:none; }
.table-actions{ display:flex; gap:8px; flex-wrap:wrap; }

/* ---------- stats ---------- */
.stat-card{ padding:22px; }
.stat-value{ font-family:var(--font-display); font-size:2.1rem; font-weight:700; }
.stat-label{ font-size:.8rem; color:var(--text-on-light-dim); text-transform:uppercase; letter-spacing:.05em; font-family:var(--font-mono); }

/* ---------- misc ---------- */
.footer{ border-top:1px solid var(--line); padding:36px 0; margin-top:80px; }
.footer-inner{ display:flex; justify-content:space-between; flex-wrap:wrap; gap:16px; font-size:.85rem; color:var(--text-on-light-dim); }
.footer a{ text-decoration:none; margin-right:16px; }
.badge-free{ font-family:var(--font-mono); font-size:.7rem; color:var(--brass); }
.empty-state{ text-align:center; padding:60px 20px; color:var(--text-on-light-dim); }
.toast{
  position:fixed; bottom:24px; left:50%; transform:translateX(-50%) translateY(20px);
  background:var(--ink-900); color:var(--text-on-dark); padding:12px 20px; border-radius:var(--radius-sm);
  font-size:.88rem; opacity:0; transition:opacity .2s, transform .2s; pointer-events:none; z-index:50;
  box-shadow:var(--shadow); border:1px solid var(--ink-700);
}
.toast.show{ opacity:1; transform:translateX(-50%) translateY(0); }
.modal-backdrop{ position:fixed; inset:0; background:rgba(15,27,51,.55); display:none; align-items:center; justify-content:center; z-index:40; padding:20px; }
.modal-backdrop.show{ display:flex; }
.modal{ background:var(--paper); border:1px solid var(--line); border-radius:var(--radius); padding:26px; max-width:420px; width:100%; box-shadow:var(--shadow); }
.divider{ border:none; border-top:1px solid var(--line); margin:20px 0; }
.warning-box{
  border:1px dashed var(--warn); background:color-mix(in srgb, var(--warn) 10%, transparent);
  border-radius:var(--radius-sm); padding:14px 16px; font-size:.85rem; color:var(--text-on-light);
}
.scan-video{ width:100%; border-radius:var(--radius); border:1px solid var(--line); background:#000; }
.center-page{ min-height:60vh; display:flex; align-items:center; justify-content:center; text-align:center; padding:60px 20px; }

@media (max-width: 860px){
  .hero-grid{ grid-template-columns:1fr; }
  .gen-layout{ grid-template-columns:1fr; }
  .gen-preview{ position:static; }
  .grid-3{ grid-template-columns:1fr; }
  .grid-2{ grid-template-columns:1fr; }
  .nav-links{ display:none; }
  .hero-features{ grid-template-columns:1fr; }
}