:root{
  --bg:#050810;--panel:#0c1222;--panel2:#111a2e;--line:rgba(148,163,184,.14);
  --text:#f0f6ff;--muted:#8fa3c4;--accent:#4da3ff;--accent2:#7c3aed;
  --sale:#ef4444;--ok:#22c55e;--warn:#f59e0b;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:Inter,system-ui,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;line-height:1.5}
body:before{content:"";position:fixed;inset:0;z-index:-1;background:
  radial-gradient(circle at 15% 10%,rgba(77,163,255,.18),transparent 35%),
  radial-gradient(circle at 85% 0%,rgba(124,58,237,.15),transparent 30%),
  var(--bg)}
a{color:var(--accent);text-decoration:none}
.shell{width:min(1200px,calc(100% - 28px));margin:0 auto;padding:24px 0 64px}

/* login */
.login-wrap{min-height:80vh;display:grid;place-items:center}
.login-card{width:min(440px,100%);background:linear-gradient(180deg,rgba(17,26,46,.95),rgba(12,18,34,.98));border:1px solid var(--line);border-radius:28px;padding:36px;box-shadow:0 30px 90px rgba(0,0,0,.45)}
.login-card h1{font-size:28px;margin-bottom:8px}
.login-card p{color:var(--muted);font-size:14px;margin-bottom:24px}
.status-pill{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;font-size:12px;font-weight:800;margin-bottom:18px;border:1px solid var(--line);background:rgba(255,255,255,.03)}
.status-pill.ok{border-color:rgba(34,197,94,.35);color:#86efac}
.status-pill.bad{border-color:rgba(239,68,68,.35);color:#fca5a5}

/* header */
.hdr{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:22px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:14px}
.logo{width:48px;height:48px;border-radius:16px;background:linear-gradient(135deg,var(--accent),var(--accent2));display:grid;place-items:center;font-weight:900;font-size:20px;box-shadow:0 12px 40px rgba(77,163,255,.25)}
.hdr h1{font-size:26px}
.hdr small{color:var(--muted)}
.hdr-actions{display:flex;gap:10px;flex-wrap:wrap}

/* layout */
.layout{display:grid;grid-template-columns:1.1fr .9fr;gap:18px}
@media(max-width:960px){.layout{grid-template-columns:1fr}}

.panel{background:var(--panel);border:1px solid var(--line);border-radius:24px;padding:22px;box-shadow:0 24px 70px rgba(0,0,0,.22)}
.panel h2{font-size:18px;margin-bottom:6px}
.panel .sub{color:var(--muted);font-size:13px;margin-bottom:18px}

.tabs{display:flex;gap:8px;margin-bottom:16px;flex-wrap:wrap}
.tab{padding:11px 16px;border-radius:14px;border:1px solid var(--line);background:rgba(255,255,255,.03);color:#fff;font-weight:800;cursor:pointer;font-size:14px}
.tab.active{background:linear-gradient(135deg,rgba(77,163,255,.2),rgba(124,58,237,.15));border-color:rgba(77,163,255,.45)}

/* forms */
.grid{display:grid;gap:14px}
.card{background:var(--panel2);border:1px solid var(--line);border-radius:20px;padding:18px}
.card h3{font-size:16px;margin-bottom:12px}
.row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media(max-width:600px){.row{grid-template-columns:1fr}}
label{display:grid;gap:6px;font-size:12px;font-weight:700;color:var(--muted)}
input,textarea{width:100%;border:1px solid var(--line);background:rgba(255,255,255,.04);color:#fff;border-radius:12px;padding:12px 14px;font-size:15px}
textarea{min-height:84px;resize:vertical}
.check{display:flex;align-items:center;gap:8px;font-size:13px;color:#dbeafe;margin-top:8px;font-weight:600}
.check input{width:auto}
.hint{font-size:12px;color:var(--muted);margin-top:10px;line-height:1.5}

.btn{border:0;cursor:pointer;padding:12px 18px;border-radius:14px;font-weight:800;font-size:14px;display:inline-flex;align-items:center;justify-content:center;gap:8px}
.btn:disabled{opacity:.55;cursor:not-allowed}
.btn-primary{background:linear-gradient(135deg,var(--accent),#2563eb);color:#fff;box-shadow:0 12px 30px rgba(37,99,235,.25)}
.btn-ghost{background:rgba(255,255,255,.05);border:1px solid var(--line);color:#fff}
.btn-danger{background:rgba(239,68,68,.12);border:1px solid rgba(239,68,68,.3);color:#fca5a5}
.btn-block{width:100%;margin-top:14px}
.preview-img{width:100%;max-height:140px;object-fit:cover;border-radius:14px;margin-top:10px;border:1px solid var(--line)}

/* preview */
.preview-box{background:var(--panel2);border:1px solid var(--line);border-radius:18px;padding:16px;margin-bottom:12px}
.preview-label{font-size:11px;font-weight:900;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-bottom:10px}
.p-price{position:relative;border:1px solid var(--line);border-radius:16px;padding:16px;background:rgba(255,255,255,.02)}
.p-price.sale{border-color:rgba(239,68,68,.4);box-shadow:-4px 0 0 0 var(--sale)}
.p-sale-badge{position:absolute;top:12px;left:12px;background:linear-gradient(135deg,#ef4444,#f97316);color:#fff;font-size:10px;font-weight:900;padding:6px 10px;border-radius:999px;text-transform:uppercase}
.p-old{text-decoration:line-through;color:#94a3b8;font-weight:800;font-size:18px}
.p-new{font-size:28px;font-weight:900;color:#fecaca;margin-top:4px}
.p-new.normal{color:#fff}
.p-project{display:grid;grid-template-columns:96px 1fr;gap:12px;align-items:center}
.p-project img{width:96px;height:72px;object-fit:cover;border-radius:12px;border:1px solid var(--line)}
.p-project h4{font-size:15px;margin-bottom:4px}
.p-project p{font-size:12px;color:var(--muted)}

.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%) translateY(120px);background:#111a2e;border:1px solid var(--line);padding:14px 20px;border-radius:14px;font-weight:700;z-index:99;opacity:0;transition:.25s;max-width:min(92vw,520px);text-align:center}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.toast.ok{border-color:rgba(34,197,94,.4)}
.toast.bad{border-color:rgba(239,68,68,.4)}

@media(max-width:720px){
  .shell{width:calc(100% - 20px);padding:16px 0 48px}
  .login-card{padding:24px;border-radius:22px}
  .login-card h1{font-size:24px}
  .hdr h1{font-size:20px}
  .logo{width:42px;height:42px;font-size:17px}
  .hdr-actions{width:100%;justify-content:stretch}
  .hdr-actions .btn,.hdr-actions a.btn{flex:1;text-align:center;font-size:13px;padding:11px 12px}
  .hdr-actions .status-pill{flex:1 1 100%;justify-content:center}
  .panel{padding:16px;border-radius:20px}
  .tabs{gap:6px}
  .tab{flex:1;text-align:center;padding:10px 8px;font-size:13px}
  .card{padding:14px}
  input,textarea,select{font-size:16px}
  .preview-box{padding:12px}
  .p-project{grid-template-columns:72px 1fr}
  .p-project img{width:72px;height:56px}
  .toast{bottom:16px;font-size:13px;padding:12px 16px}
}