:root{
  --bg:#eef2f7;
  --card:#ffffff;
  --line:#dbe3ee;
  --line-dark:#c7d2e2;
  --text:#0f172a;
  --muted:#64748b;
  --primary:#0f172a;
  --primary-2:#1d4ed8;
  --success:#166534;
  --success-bg:#dcfce7;
  --error:#991b1b;
  --error-bg:#fee2e2;
  --danger:#7f1d1d;
  --shadow:0 18px 45px rgba(15,23,42,.08);
  --radius:24px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:Arial,Helvetica,sans-serif;background:linear-gradient(135deg,#f8fafc,#e8eef7);color:var(--text)}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit}
button{cursor:pointer}

.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:32px}
.card{background:var(--card);border:1px solid rgba(203,213,225,.7);border-radius:var(--radius);box-shadow:var(--shadow)}
.auth-card{width:min(460px,100%);padding:28px}
.auth-card h1{margin:0 0 10px;font-size:32px}
.auth-card p{margin:0 0 20px;color:var(--muted);line-height:1.5}
.badge{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:#eff6ff;color:#1e3a8a;font-weight:700;font-size:12px;margin-bottom:14px;text-transform:uppercase;letter-spacing:.05em}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:14px}
.field-grid{display:grid;gap:12px}
.field-grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}
.field-grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}
.field label{font-weight:700;font-size:14px}
.field input,.field select,.field textarea{border:1px solid var(--line-dark);border-radius:16px;padding:12px 14px;background:#fff;outline:none;transition:border-color .15s ease, box-shadow .15s ease}
.field input:focus,.field select:focus,.field textarea:focus{border-color:#60a5fa;box-shadow:0 0 0 4px rgba(96,165,250,.18)}
.field textarea{resize:vertical;min-height:96px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 16px;border-radius:999px;border:1px solid #cbd5e1;background:#fff;color:var(--text);font-weight:700}
.btn.primary{background:var(--primary);color:#fff;border-color:var(--primary)}
.btn.danger{color:var(--danger);border-color:#fecaca;background:#fff5f5}
.btn.full{width:100%}
.flash{padding:14px 16px;border-radius:18px;margin:0 0 18px;font-weight:700}
.flash.error{background:var(--error-bg);color:var(--error)}
.flash.success{background:var(--success-bg);color:var(--success)}
.muted-small{font-size:12px;color:var(--muted);line-height:1.4}

.app-shell{max-width:1680px;margin:0 auto;padding:22px}
.hero{display:flex;justify-content:space-between;gap:18px;align-items:flex-start;padding:24px 28px;margin-bottom:18px}
.hero h1{margin:4px 0 10px;font-size:38px;line-height:1.1}
.hero p{margin:0;max-width:900px;color:var(--muted);line-height:1.55}
.toolbar{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:flex-end}
.info-box{padding:12px 14px;border-radius:16px;background:#f8fafc;border:1px solid var(--line);font-size:14px}

.layout{display:grid;grid-template-columns:420px minmax(0,1fr);gap:18px;align-items:start}
.sidebar,.section{padding:20px}
.main-content{display:flex;flex-direction:column;gap:18px}
.section-header{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
.section-header h2{margin:0;font-size:24px}
.mini-note{font-size:12px;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.06em}
.stack-form{display:flex;flex-direction:column;gap:0}
.button-row{display:flex;gap:10px;flex-wrap:wrap}
.top-gap{margin-top:12px}
.project-list{display:flex;flex-direction:column;gap:10px;margin-top:16px}
.project-item{display:block;border:1px solid var(--line);border-radius:18px;padding:14px;background:#fff;transition:border-color .15s ease, transform .15s ease, box-shadow .15s ease}
.project-item:hover{transform:translateY(-1px);border-color:#93c5fd;box-shadow:0 10px 25px rgba(59,130,246,.08)}
.project-item.active{border-color:#1d4ed8;background:#eff6ff}
.project-title-row{display:flex;justify-content:space-between;gap:8px;align-items:flex-start;margin-bottom:6px}
.project-tag{display:inline-flex;padding:5px 10px;border-radius:999px;background:#e2e8f0;color:#334155;font-size:12px;font-weight:700}
.project-meta{font-size:13px;color:var(--muted);line-height:1.45}
.empty-box,.note-box,.profile-box{padding:14px 16px;border-radius:18px;background:#f8fafc;border:1px solid var(--line);color:var(--muted);line-height:1.5}
.divider{height:1px;background:var(--line);margin:20px 0}

.admin-form{margin-bottom:14px}
.user-table-wrap{overflow:auto}
.user-table,.piece-table{width:100%;border-collapse:collapse}
.user-table th,.user-table td,.piece-table th,.piece-table td{padding:11px 10px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.user-table th,.piece-table th{font-size:13px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}
.table-actions{display:flex;flex-direction:column;gap:8px;min-width:200px}
.link-btn{border:0;background:none;padding:0;color:#1d4ed8;font-weight:700;text-align:left}
.reset-inline{display:flex;gap:6px;align-items:center}
.reset-inline input{min-width:120px;padding:8px 10px;border-radius:12px;border:1px solid var(--line-dark)}

.tab-row{display:flex;gap:8px;flex-wrap:wrap}
.tab{border:1px solid var(--line-dark);background:#fff;padding:10px 14px;border-radius:999px;font-weight:700}
.tab.active{background:var(--primary);color:#fff;border-color:var(--primary)}
.config-grid{display:grid;grid-template-columns:380px minmax(0,1fr);gap:16px}
.card-soft{background:#f8fafc;border:1px solid var(--line);border-radius:22px;padding:16px}
.card-soft h3{margin:0 0 14px;font-size:18px}
.control{border:1px solid var(--line);background:#fff;border-radius:18px;padding:14px;margin-bottom:12px}
.control-head{display:flex;justify-content:space-between;gap:12px;align-items:flex-start}
.control-head label{font-weight:700;font-size:14px}
.control-head small{display:block;color:var(--muted);margin-top:4px}
.inline-input{display:flex;align-items:center;gap:8px}
.inline-input input{width:92px;padding:8px 10px;border:1px solid var(--line-dark);border-radius:12px;text-align:right}
.control input[type="range"]{width:100%;margin-top:10px}
.control-range-meta{display:flex;justify-content:space-between;margin-top:6px;font-size:12px;color:var(--muted)}
.check-grid{display:grid;gap:10px;margin-top:10px}
.check-grid label{display:flex;gap:10px;align-items:flex-start;padding:12px 14px;border:1px solid var(--line);background:#fff;border-radius:16px;color:#334155}
.views-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.view-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:12px}
.view-head{font-weight:700;margin-bottom:8px}
.view-box{height:265px;background:linear-gradient(180deg,#fff,#f8fafc);border:1px solid var(--line);border-radius:16px;display:flex;align-items:center;justify-content:center;overflow:hidden}
.view-box svg{width:100%;height:100%}

.stats-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.stats-grid.four{grid-template-columns:repeat(4,minmax(0,1fr))}
.stat-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:18px 20px;box-shadow:var(--shadow)}
.stat-card span{display:block;color:var(--muted);margin-bottom:10px;font-size:14px}
.stat-card strong{font-size:32px;line-height:1.1}

.bottom-grid{display:grid;grid-template-columns:1.15fr .95fr;gap:18px}
.table-scroll{overflow:auto}
.piece-table td{font-size:14px}
.row-note{color:var(--muted);font-size:12px;margin-top:4px;line-height:1.35}
.summary-pill{display:inline-flex;margin-top:14px;padding:10px 14px;border-radius:999px;background:#eff6ff;color:#1d4ed8;font-weight:700}
.quote-grid{display:grid;gap:10px}
.quote-row{display:flex;justify-content:space-between;align-items:center;padding:14px 16px;border:1px solid var(--line);border-radius:16px;background:#fff}
.quote-row.total{background:#0f172a;color:#fff;border-color:#0f172a}

@media (max-width: 1400px){
  .layout{grid-template-columns:1fr}
  .config-grid,.bottom-grid{grid-template-columns:1fr}
}
@media (max-width: 980px){
  .field-grid.two,.field-grid.three,.views-grid,.stats-grid.four{grid-template-columns:1fr}
}
@media (max-width: 860px){
  .hero{flex-direction:column}
  .stats-grid{grid-template-columns:1fr}
  .app-shell{padding:14px}
  .hero h1{font-size:30px}
}