:root{--bg:#f4f6f8;--panel:#fff;--line:#d9dee6;--text:#1f2937;--muted:#6b7280;--accent:#1f6feb;--ok:#15803d;--sidebar:#111827}
*{box-sizing:border-box}
body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text)}
a{color:inherit;text-decoration:none}
a:visited{color:inherit}
a:hover{color:var(--accent)}

.view-nav{position:sticky;top:0;z-index:1000;min-height:58px;background:#0b1220;border-bottom:1px solid #334155;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:8px 18px;color:#fff}
.view-nav .nav-title{font-weight:700;white-space:nowrap}
.view-nav .nav-actions{display:flex;gap:8px;flex-wrap:wrap}
.view-nav button,.view-nav a.nav-link{padding:9px 14px;background:#172033;border:1px solid #334155;color:#dbeafe;border-radius:10px;text-decoration:none;font-weight:700;cursor:pointer;display:inline-block}
.view-nav button.active,.view-nav a.nav-link.active{background:var(--accent);border-color:var(--accent);color:#fff}
.view-section{min-height:calc(100vh - 58px)}

.app{display:grid;grid-template-columns:390px 1fr;min-height:calc(100vh - 58px)}
aside{background:var(--sidebar);color:#fff;padding:20px;display:flex;flex-direction:column;gap:14px;position:sticky;top:58px;height:calc(100vh - 58px);overflow:hidden}
main{padding:22px}
.brand h1{margin:0 0 6px 0;font-size:22px}
.brand p{margin:0;color:#cbd5e1;font-size:15.5px;line-height:1.5;text-align:justify}
.meta{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
.meta .box{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.08);border-radius:12px;padding:10px 12px}
.meta strong{display:block;font-size:22px}
.meta span{font-size:12px;color:#cbd5e1}
.group-label{padding:9px 10px 4px;color:#93c5fd;font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.04em}

.header{display:flex;justify-content:space-between;gap:16px;align-items:flex-start;margin-bottom:16px}
.header h2{margin:0 0 8px 0;font-size:28px}
.header p{margin:0;color:var(--muted)}
.actions{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}
button{border:1px solid var(--line);background:var(--panel);border-radius:10px;padding:10px 14px;cursor:pointer;font-weight:700;color:var(--text);font:inherit}
button.primary{background:var(--accent);border-color:var(--accent);color:#fff}

.cards{display:grid;grid-template-columns:repeat(2,minmax(320px,1fr));gap:16px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:16px}
.card.full{grid-column:1/-1}
.card h3{margin:0 0 14px 0;font-size:18px}

.form-grid{display:grid;grid-template-columns:180px 1fr;gap:10px 14px;align-items:center}
.form-grid input[type="text"],.form-grid input[type="number"],.form-grid select{width:100%;padding:9px 12px;border-radius:10px;border:1px solid var(--line);font:inherit;background:var(--panel);color:var(--text)}
.unit{font-weight:400;color:var(--muted)}
.hint{display:inline-flex;align-items:center;justify-content:center;width:14px;height:14px;border-radius:50%;background:#eef2ff;color:var(--accent);font-size:10px;font-weight:700;cursor:help;margin-left:4px}

.dual-slider{position:relative;height:26px;display:flex;align-items:center}
.dual-slider-track{position:absolute;left:0;right:0;height:4px;border-radius:2px;background:var(--line)}
.dual-slider-fill{position:absolute;height:4px;border-radius:2px;background:var(--accent)}
.dual-slider input[type="range"]{position:absolute;left:0;right:0;width:100%;margin:0;background:transparent;pointer-events:none;-webkit-appearance:none;appearance:none}
.dual-slider input[type="range"]::-webkit-slider-runnable-track{background:transparent}
.dual-slider input[type="range"]::-moz-range-track{background:transparent}
.dual-slider input[type="range"]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;pointer-events:auto;width:16px;height:16px;border-radius:50%;background:var(--accent);border:2px solid #fff;box-shadow:0 0 0 1px var(--line);cursor:pointer;margin-top:-6px}
.dual-slider input[type="range"]::-moz-range-thumb{pointer-events:auto;width:16px;height:16px;border-radius:50%;background:var(--accent);border:2px solid #fff;box-shadow:0 0 0 1px var(--line);cursor:pointer}
.dual-slider-values{margin-top:4px}

.detail-grid{display:grid;grid-template-columns:170px 1fr;gap:10px 14px}
.label{color:var(--muted);font-weight:700}
.tiny{font-size:12px;color:var(--muted)}
.footer{display:flex;justify-content:space-between;gap:8px;align-items:center;flex-wrap:wrap;margin-top:10px}
.empty{padding:20px;text-align:center;color:var(--muted)}

.notification{padding:12px 14px;margin-bottom:16px;border-radius:10px;border:1px solid var(--line);font-weight:600}
.notification.is-danger{background:#fee2e2;color:#991b1b;border-color:#fca5a5}
.notification.is-success{background:#eaf7ee;color:#166534;border-color:#bbf0c8}

.loading-overlay{position:fixed;inset:0;background:rgba(17,24,39,.55);display:flex;align-items:center;justify-content:center;z-index:2000}
.loading-overlay[hidden]{display:none}
.loading-box{background:var(--panel);border-radius:16px;padding:28px 36px;display:flex;flex-direction:column;align-items:center;gap:14px;box-shadow:0 10px 30px rgba(0,0,0,.25)}
.loading-box p{margin:0;font-weight:700;color:var(--text)}
.spinner{width:34px;height:34px;border-radius:50%;border:4px solid var(--line);border-top-color:var(--accent);animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

.result-card pre{background:var(--sidebar);color:#dbeafe;padding:16px;overflow:auto;border-radius:10px;font-size:12px;margin:0}
.table-wrap{overflow:auto}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{border-bottom:1px solid var(--line);padding:10px 8px;text-align:left;vertical-align:top}
th{background:#f8fafc}

@media (max-width:1200px){
  .app{grid-template-columns:1fr}
  .cards{grid-template-columns:1fr}
  .view-nav{position:relative;height:auto;align-items:flex-start}
  aside{position:relative;height:auto;max-height:none;overflow:visible;top:0}
}
@media (max-width:640px){
  .header{display:block}
  .actions{margin-top:12px;justify-content:flex-start}
  .actions button{width:100%}
  .form-grid{grid-template-columns:1fr}
  .form-grid .label{padding-top:4px}
  .footer{display:block}
  .footer button.primary{width:100%;margin-top:10px}
}