:root{
  --bg1:#667eea; --bg2:#8155c9; --bg3:#f093fb;
  --glass-bg:rgba(255,255,255,0.55); --glass-bg-solid:rgba(255,255,255,0.78);
  --glass-border:rgba(255,255,255,0.45);
  --text:#1c1f2b; --sub:#565f75;
  --accent:#7c3aed; --accent2:#db2777; --accent-ink:#ffffff;
  --danger:#e0335c; --chip:rgba(124,58,237,0.14);
  --line:rgba(20,20,40,0.10);
  padding-top:env(safe-area-inset-top,0px); padding-bottom:env(safe-area-inset-bottom,0px);
  box-sizing:border-box;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg1:#161233; --bg2:#2c1f5e; --bg3:#4c1d7a;
    --glass-bg:rgba(30,28,48,0.55); --glass-bg-solid:rgba(28,26,44,0.85);
    --glass-border:rgba(255,255,255,0.10);
    --text:#eef0f6; --sub:#a9aec2; --chip:rgba(167,139,250,0.18); --line:rgba(255,255,255,0.10);
  }
}
:root[data-theme="dark"]{
  --bg1:#161233; --bg2:#2c1f5e; --bg3:#4c1d7a;
  --glass-bg:rgba(30,28,48,0.55); --glass-bg-solid:rgba(28,26,44,0.85);
  --glass-border:rgba(255,255,255,0.10);
  --text:#eef0f6; --sub:#a9aec2; --chip:rgba(167,139,250,0.18); --line:rgba(255,255,255,0.10);
}
*{box-sizing:border-box;}
html{scroll-padding-top:env(safe-area-inset-top,0px); height:100%;}
body{
  margin:0; min-height:100%; color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
  background:
    radial-gradient(circle at 15% 15%, rgba(255,255,255,0.18), transparent 40%),
    radial-gradient(circle at 85% 30%, rgba(255,255,255,0.12), transparent 45%),
    linear-gradient(135deg, var(--bg1), var(--bg2) 55%, var(--bg3));
  background-attachment:fixed;
}
header{
  position:sticky; top:env(safe-area-inset-top,0px); z-index:5;
  padding:14px 20px calc(14px + env(safe-area-inset-top,0px));
  background:var(--glass-bg); backdrop-filter:blur(22px); -webkit-backdrop-filter:blur(22px);
  border-bottom:1px solid var(--glass-border);
  box-shadow:0 4px 30px rgba(20,10,50,0.12);
}
h1{font-size:17px;margin:0 0 10px;letter-spacing:.2px;}
.tabs{display:flex;gap:8px;}
.tab{
  padding:8px 16px;border-radius:10px;border:1px solid var(--glass-border);
  background:rgba(255,255,255,0.22); backdrop-filter:blur(8px); -webkit-backdrop-filter:blur(8px);
  color:var(--text);cursor:pointer;font-size:13.5px;font-weight:600;transition:.15s ease;
}
.tab:hover{background:rgba(255,255,255,0.32);}
.tab.active{
  background:linear-gradient(135deg, var(--accent), var(--accent2));
  color:#fff;border-color:transparent;box-shadow:0 6px 18px rgba(124,58,237,0.4);
}
main{max-width:960px;margin:0 auto;padding:22px 20px 60px;}
.card{
  background:var(--glass-bg); backdrop-filter:blur(18px); -webkit-backdrop-filter:blur(18px);
  border:1px solid var(--glass-border); border-radius:18px; padding:18px;margin-bottom:18px;
  box-shadow:0 10px 40px rgba(20,10,50,0.12);
}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center;}
input[type=text],input[type=number],input[type=url],textarea,select{
  background:rgba(255,255,255,0.35); backdrop-filter:blur(6px); -webkit-backdrop-filter:blur(6px);
  border:1px solid var(--glass-border);color:var(--text);border-radius:10px;padding:9px 11px;font-size:13.5px;width:100%;
}
:root[data-theme="dark"] input, :root:not([data-theme="light"]) input, textarea, select{color:var(--text);}
input::placeholder, textarea::placeholder{color:var(--sub);opacity:.85;}
textarea{min-height:50px;resize:vertical;}
label{font-size:12px;color:var(--sub);display:block;margin-bottom:4px;font-weight:600;}
.field{flex:1;min-width:160px;}
button{cursor:pointer;border:none;border-radius:10px;padding:9px 15px;font-size:13px;font-weight:700;transition:.15s ease;}
.btn-primary{background:linear-gradient(135deg, var(--accent), var(--accent2));color:#fff;box-shadow:0 6px 18px rgba(124,58,237,0.35);}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);}
.btn-ghost{background:rgba(255,255,255,0.3);backdrop-filter:blur(6px);border:1px solid var(--glass-border);color:var(--text);}
.btn-ghost:hover{background:rgba(255,255,255,0.45);}
.btn-danger{background:rgba(224,51,92,0.12);color:var(--danger);border:1px solid rgba(224,51,92,0.4);}
.btn-sm{padding:6px 11px;font-size:12px;}
table{width:100%;border-collapse:collapse;font-size:13px;}
th,td{text-align:left;padding:9px 7px;border-bottom:1px solid var(--line);vertical-align:top;}
th{color:var(--sub);font-weight:700;font-size:11.5px;text-transform:uppercase;letter-spacing:.4px;}
.chip{display:inline-block;background:var(--chip);color:var(--accent);padding:3px 9px;border-radius:20px;font-size:11.5px;margin-right:4px;font-weight:600;}
.play{color:var(--accent);text-decoration:none;font-weight:700;font-size:12.5px;}
.muted{color:var(--sub);font-size:12.5px;}
.hidden{display:none !important;}
.overlay{position:fixed;inset:0;background:rgba(10,5,30,.45);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:50;padding:16px;}
.modal{
  background:var(--glass-bg-solid); backdrop-filter:blur(24px); -webkit-backdrop-filter:blur(24px);
  border:1px solid var(--glass-border); border-radius:18px;padding:20px;width:100%;max-width:480px;max-height:85vh;overflow:auto;
  box-shadow:0 20px 60px rgba(10,5,30,0.35);
}
.pdf-line{display:flex;justify-content:space-between;gap:8px;padding:7px 4px;border-bottom:1px solid var(--line);font-size:13px;}
.constr{
  background:var(--glass-bg); backdrop-filter:blur(14px); -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--glass-border);border-radius:14px;padding:14px;margin-bottom:14px;
  box-shadow:0 6px 24px rgba(20,10,50,0.10);
}
.sol-item{display:flex;gap:8px;align-items:flex-start;padding:6px 0;border-bottom:1px dashed var(--line);font-size:13px;}
.sol-item:last-child{border-bottom:none;}
.overflow{overflow-x:auto;}
.lib-search{width:100%;}
.ai-conf{font-size:11px;padding:2px 8px;border-radius:20px;background:var(--chip);color:var(--accent);white-space:nowrap;font-weight:700;}
.spin{display:inline-block;width:12px;height:12px;border:2px solid var(--line);border-top-color:var(--accent);border-radius:50%;animation:spin 0.8s linear infinite;margin-right:6px;vertical-align:-1px;}
@keyframes spin{to{transform:rotate(360deg);}}
.top-actions{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px;flex-wrap:wrap;gap:8px;}
/* Glassmorphism panel for the auto-match results */
.glass-panel{border-radius:14px;overflow:hidden;border:1px solid var(--glass-border);
  background:rgba(255,255,255,0.14); backdrop-filter:blur(16px); -webkit-backdrop-filter:blur(16px);
  box-shadow:0 8px 30px rgba(20,10,50,0.15);}
.ai-row.glass{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:11px 15px;border-bottom:1px solid var(--line);font-size:13px;}
.ai-row.glass:last-child{border-bottom:none;}
.muted.glass{border-radius:12px;padding:11px 15px;border:1px solid var(--glass-border);background:rgba(255,255,255,0.14);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);}