/* Base */
:root{
  --bg:#0b0c10;
  --panel:#12131a;
  --muted:#aab2c8;
  --text:#e6ebf5;
  --brand:#5b8cff;
  --brand-2:#7a5bff;
  --border:#1f2230;
  --card:#161925;
  --ok: #21c197;
  --warn:#f7b955;
}

:root.light{
  --bg:#f7f9fc;
  --panel:#ffffff;
  --muted:#5a6275;
  --text:#0e1320;
  --brand:#3b6cff;
  --brand-2:#5b3bff;
  --border:#e7ebf3;
  --card:#ffffff;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
  background:linear-gradient(160deg, var(--bg), #0f1022 60%, #0e0f1a 100%);
  color:var(--text);
  letter-spacing: .2px;
}

.container{max-width:1100px;margin:0 auto;padding:0 20px}

/* Header */
.site-header{position:sticky;top:0;background:rgba(18,19,26,.7);backdrop-filter:saturate(1.3) blur(10px);border-bottom:1px solid var(--border);z-index:10}
:root.light .site-header{background:rgba(255,255,255,.7)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:14px 0}
.brand{display:flex;align-items:center;gap:14px}
.brand .logo{width:40px;height:40px}
.brand h1{font-size:20px;margin:0}
.subtitle{margin:2px 0 0;color:var(--muted);font-size:12px}
.header-actions{display:flex;align-items:center;gap:10px}

/* Hero */
.hero{padding:32px 0}
.hero h2{margin:0 0 8px;font-size:28px}
.hero p{margin:0 0 16px;color:var(--muted)}
.quick-actions{display:flex;gap:10px;flex-wrap:wrap}
.quick-actions input[type="search"]{flex:1;min-width:260px;padding:12px 12px;border-radius:10px;border:1px solid var(--border);background:var(--panel);color:var(--text)}
.quick-actions .btn{padding:12px 16px}

/* Section */
.section-title{margin:8px 0 14px;font-size:16px;color:var(--muted);text-transform:uppercase;letter-spacing:.8px}
.grid{display:grid;grid-template-columns:repeat(12,1fr);gap:14px}
@media (max-width: 880px){.grid{grid-template-columns:repeat(6,1fr)}}
@media (max-width: 520px){.grid{grid-template-columns:repeat(2,1fr)}}

/* Card */
.card{grid-column:span 3;background:var(--card);border:1px solid var(--border);border-radius:14px;padding:14px;display:flex;flex-direction:column;gap:10px;box-shadow:0 10px 30px rgba(0,0,0,.25)}
@media (max-width: 880px){.card{grid-column:span 6}}
@media (max-width: 520px){.card{grid-column:span 2}}
.card .title{font-weight:600;margin:0}
.card .desc{margin:2px 0 10px;color:var(--muted);font-size:13px;line-height:1.4}
.card .tags{display:flex;gap:8px;flex-wrap:wrap}
.tag{font-size:11px;padding:4px 8px;border-radius:999px;border:1px solid var(--border);color:var(--muted)}
.card .actions{display:flex;gap:8px;margin-top:auto}

/* Buttons */
.btn{appearance:none;border:none;background:linear-gradient(135deg, var(--brand), var(--brand-2));color:#fff;border-radius:10px;padding:10px 14px;font-weight:600;cursor:pointer;transition:transform .06s ease, box-shadow .2s}
.btn:hover{transform:translateY(-1px);box-shadow:0 8px 18px rgba(91,140,255,.25)}
.btn.secondary{background:transparent;color:var(--text);border:1px solid var(--border)}
.btn.ghost{background:transparent;color:var(--muted)}
.btn.icon{width:36px;height:36px;display:inline-grid;place-items:center;border-radius:10px}

/* Footer */
.site-footer{border-top:1px solid var(--border);margin-top:32px}
.footer-inner{display:flex;align-items:center;justify-content:space-between;padding:18px 0;color:var(--muted)}
.footer-inner a{color:inherit;text-decoration:none}
.footer-inner .dot{margin:0 8px}

/* Modal */
dialog{border:none;border-radius:14px;background:var(--panel);color:var(--text);padding:0;box-shadow:0 20px 80px rgba(0,0,0,.45)}
.modal-head{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-bottom:1px solid var(--border)}
.qr-wrap{display:grid;place-items:center;padding:16px}
/* Ensure qr image matches canvas size visually */
#qrImg{width:256px;height:256px;object-fit:contain}
.modal-actions{padding:0 16px 16px}

/* Utilities */
.hidden{display:none !important}
.highlight{outline:2px solid var(--ok)}