/* Prestige Creative Studio — luxury dark theme */
:root{
  --bg:#0a0a0b; --panel:#131316; --panel-2:#1a1a1f; --line:#26262c;
  --ink:#f4f1ea; --muted:#9a958c; --dim:#6b675f;
  --gold:#c9a24b; --gold-soft:#e6c877; --gold-dim:#8a6f2f;
  --ok:#4caf7f; --danger:#e0655f;
  --radius:14px; --radius-sm:10px;
  --serif:"Cormorant Garamond",Georgia,serif;
  --sans:"Inter",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:15px;line-height:1.5;-webkit-font-smoothing:antialiased}
a{color:var(--gold-soft);text-decoration:none}
img{max-width:100%;display:block}

/* ---------- Login gate ---------- */
.gate{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;background:radial-gradient(120% 80% at 50% -10%,#1a160c 0%,#0a0a0b 55%);z-index:50;padding:20px}
.gate-card{width:100%;max-width:360px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:34px 28px;text-align:center;box-shadow:0 30px 80px rgba(0,0,0,.6)}
.gate-mark{font-family:var(--serif);font-size:30px;letter-spacing:.5px;color:var(--gold-soft);font-weight:600}
.gate-sub{color:var(--muted);font-size:13px;margin:6px 0 24px}
.gate input{width:100%;padding:13px 14px;background:var(--panel-2);border:1px solid var(--line);border-radius:var(--radius-sm);color:var(--ink);font-size:15px;text-align:center;letter-spacing:2px}
.gate input:focus{outline:none;border-color:var(--gold-dim)}
.gate .err{color:var(--danger);font-size:12.5px;min-height:16px;margin:10px 0 0}

/* ---------- App shell ---------- */
.app{display:none;min-height:100vh}
.app.on{display:grid;grid-template-columns:238px 1fr}
.sidebar{background:linear-gradient(180deg,#101014,#0b0b0d);border-right:1px solid var(--line);padding:22px 16px;position:sticky;top:0;height:100vh;overflow:auto}
.brand{display:flex;align-items:center;gap:11px;margin-bottom:26px}
.brand .mark{width:38px;height:38px;border-radius:10px;background:linear-gradient(135deg,var(--gold),var(--gold-dim));display:grid;place-items:center;font-family:var(--serif);font-weight:700;color:#1a1508;font-size:20px}
.brand-name{font-family:var(--serif);font-size:19px;font-weight:600;line-height:1.05;color:var(--ink)}
.brand-sub{font-size:11px;color:var(--dim);letter-spacing:1.5px;text-transform:uppercase}
.nav-label{font-size:10.5px;letter-spacing:1.6px;text-transform:uppercase;color:var(--dim);margin:18px 8px 8px}
.nav-item{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:var(--radius-sm);color:var(--muted);cursor:pointer;font-size:14px;font-weight:500;transition:.15s}
.nav-item:hover{background:var(--panel-2);color:var(--ink)}
.nav-item.active{background:linear-gradient(90deg,rgba(201,162,75,.16),rgba(201,162,75,.02));color:var(--gold-soft);box-shadow:inset 2px 0 0 var(--gold)}
.nav-item .ico{width:18px;text-align:center;opacity:.9}

.main{min-height:100vh;overflow:auto}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:20px 28px;border-bottom:1px solid var(--line);position:sticky;top:0;background:rgba(10,10,11,.82);backdrop-filter:blur(10px);z-index:10}
.topbar h1{font-family:var(--serif);font-size:26px;font-weight:600;margin:0}
.topbar .sub{color:var(--muted);font-size:13px}
.menu-toggle{display:none;background:var(--panel-2);border:1px solid var(--line);color:var(--ink);width:38px;height:38px;border-radius:10px;font-size:18px;cursor:pointer}
.content{padding:26px 28px 80px;max-width:1080px}

/* ---------- Components ---------- */
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.card + .card{margin-top:16px}
.grid{display:grid;gap:16px}
.grid.cols-2{grid-template-columns:1fr 1fr}
.grid.cols-3{grid-template-columns:1fr 1fr 1fr}
.row{display:flex;gap:12px;flex-wrap:wrap}
.between{display:flex;align-items:center;justify-content:space-between;gap:12px}

label.fld{display:block;margin-bottom:14px}
label.fld .lab{display:block;font-size:12px;color:var(--muted);margin-bottom:6px;letter-spacing:.3px}
input,select,textarea{width:100%;padding:11px 12px;background:var(--panel-2);border:1px solid var(--line);border-radius:var(--radius-sm);color:var(--ink);font-size:14px;font-family:var(--sans)}
textarea{min-height:78px;resize:vertical}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--gold-dim)}
select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M2 4l4 4 4-4' stroke='%239a958c' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding-right:32px}

.btn{display:inline-flex;align-items:center;gap:8px;padding:11px 18px;border-radius:var(--radius-sm);border:1px solid var(--line);background:var(--panel-2);color:var(--ink);font-size:14px;font-weight:600;cursor:pointer;transition:.15s;font-family:var(--sans)}
.btn:hover{border-color:var(--gold-dim)}
.btn.primary{background:linear-gradient(135deg,var(--gold),var(--gold-dim));border:none;color:#1a1508}
.btn.primary:hover{filter:brightness(1.07)}
.btn.ghost{background:transparent}
.btn.sm{padding:7px 12px;font-size:12.5px}
.btn.danger{color:var(--danger);border-color:#3a2626}

.chip{display:inline-flex;align-items:center;gap:6px;padding:5px 11px;border-radius:999px;background:var(--panel-2);border:1px solid var(--line);font-size:12px;color:var(--muted)}
.chip.gold{color:var(--gold-soft);border-color:var(--gold-dim)}
.tag{font-size:11px;letter-spacing:1px;text-transform:uppercase;color:var(--dim)}

.empty{text-align:center;padding:48px 20px;color:var(--muted)}
.empty .big{font-family:var(--serif);font-size:22px;color:var(--ink);margin-bottom:6px}

.list-item{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 16px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--panel-2);margin-bottom:10px}
.list-item .t{font-weight:600}
.list-item .d{font-size:12.5px;color:var(--muted)}

/* angle picker */
.angle-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.angle{padding:13px 14px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--panel-2);cursor:pointer;transition:.15s}
.angle:hover{border-color:var(--gold-dim)}
.angle.sel{border-color:var(--gold);background:linear-gradient(135deg,rgba(201,162,75,.14),transparent)}
.angle .an{font-family:var(--serif);font-size:16px;color:var(--gold-soft)}
.angle .ad{font-size:12px;color:var(--muted);margin-top:3px}

/* packet output */
.packet{background:#0c0c0e;border:1px solid var(--gold-dim);border-radius:var(--radius);overflow:hidden}
.packet-head{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px 16px;background:linear-gradient(90deg,rgba(201,162,75,.14),transparent);border-bottom:1px solid var(--line)}
.packet pre{margin:0;padding:18px;font-family:ui-monospace,"SF Mono",Menlo,Consolas,monospace;font-size:12.5px;line-height:1.65;color:#d8d3c8;white-space:pre-wrap;word-break:break-word;max-height:520px;overflow:auto}
.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:var(--gold);color:#1a1508;padding:11px 20px;border-radius:999px;font-weight:600;font-size:13.5px;box-shadow:0 12px 40px rgba(0,0,0,.5);opacity:0;pointer-events:none;transition:.25s;z-index:60}
.toast.on{opacity:1;bottom:34px}

.hint{font-size:12px;color:var(--dim);margin-top:4px}
.divider{height:1px;background:var(--line);margin:18px 0}
.section-title{font-family:var(--serif);font-size:19px;margin:0 0 4px}
.section-sub{color:var(--muted);font-size:13px;margin:0 0 16px}

/* mobile */
@media(max-width:860px){
  .app.on{grid-template-columns:1fr}
  .sidebar{position:fixed;left:-260px;top:0;z-index:40;width:238px;transition:.25s;box-shadow:0 0 60px rgba(0,0,0,.6)}
  .sidebar.open{left:0}
  .menu-toggle{display:grid;place-items:center}
  .grid.cols-2,.grid.cols-3{grid-template-columns:1fr}
  .angle-grid{grid-template-columns:1fr}
  .content{padding:18px 16px 80px}
  .topbar{padding:16px}
}
.scrim{display:none;position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:35}
.scrim.on{display:block}