/* ===== 3D Printing Hub — Admin panel styles ===== */
:root{
  --primary:#2563EB;--secondary:#7C3AED;--accent:#FF6B00;
  --bg:#080B16;--bg2:#0B0F1E;--card:#121826;--line:rgba(255,255,255,.1);
  --line2:rgba(255,255,255,.18);--white:#fff;--grey:#A7B0C0;--grey-light:#D5DBE6;--dim:#6B7488;
  --grad:linear-gradient(120deg,#2563EB,#7C3AED 55%,#FF6B00);
  --radius:16px;--font:'Inter',system-ui,sans-serif;--head:'Poppins','Inter',sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:var(--font);background:var(--bg);color:var(--grey-light);line-height:1.55;-webkit-font-smoothing:antialiased}
body::before{content:"";position:fixed;inset:0;z-index:-1;background:
  radial-gradient(50vw 50vw at 10% 5%,rgba(37,99,235,.14),transparent 60%),
  radial-gradient(45vw 45vw at 90% 15%,rgba(124,58,237,.14),transparent 60%),var(--bg)}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--head);color:#fff;line-height:1.2}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
input,textarea,select{font-family:inherit}
img{display:block;max-width:100%}
.hidden{display:none!important}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-family:var(--head);font-weight:600;font-size:.9rem;padding:11px 20px;border-radius:100px;color:#fff;border:1px solid var(--line);background:rgba(255,255,255,.05);transition:.25s}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--grad);border:none;box-shadow:0 10px 26px -12px rgba(124,58,237,.8)}
.btn-ghost{background:rgba(255,255,255,.06);border:1px solid var(--line2)}
.btn-danger{background:rgba(239,68,68,.15);border:1px solid rgba(239,68,68,.4);color:#ff9a9a}
.btn-danger:hover{background:rgba(239,68,68,.25)}
.btn-sm{padding:7px 14px;font-size:.82rem}
.btn-block{width:100%}

/* Login */
.login-wrap{min-height:100vh;display:grid;place-items:center;padding:20px}
.login-card{width:min(420px,100%);background:linear-gradient(160deg,var(--card),var(--bg2));border:1px solid var(--line);border-radius:24px;padding:38px 34px;box-shadow:0 30px 80px -30px rgba(0,0,0,.9)}
.login-card .brand{display:flex;align-items:center;gap:12px;margin-bottom:8px}
.login-card .brand img{height:40px}
.login-card h1{font-size:1.4rem;margin-bottom:4px}
.login-card p.sub{color:var(--grey);font-size:.9rem;margin-bottom:26px}

/* Field */
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:16px}
.field label{font-size:.82rem;font-family:var(--head);font-weight:500;color:var(--grey-light)}
.field input,.field textarea,.field select{background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:11px;padding:12px 14px;color:#fff;font-size:.92rem;transition:.2s;width:100%}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--secondary);box-shadow:0 0 0 3px rgba(124,58,237,.18)}
.field textarea{resize:vertical;min-height:90px}
.field .range-row{display:flex;align-items:center;gap:12px}
.field input[type=range]{padding:0;accent-color:var(--secondary)}
.field .rv{font-family:var(--head);color:#fff;min-width:38px;text-align:right}
.err{background:rgba(239,68,68,.12);border:1px solid rgba(239,68,68,.35);color:#ff9a9a;padding:10px 14px;border-radius:10px;font-size:.86rem;margin-bottom:14px}
.ok{background:rgba(37,211,102,.12);border:1px solid rgba(37,211,102,.35);color:#7ff0aa;padding:10px 14px;border-radius:10px;font-size:.86rem;margin-bottom:14px}

/* Layout */
.app{display:grid;grid-template-columns:250px 1fr;min-height:100vh}
.sidebar{background:linear-gradient(180deg,var(--bg2),var(--bg));border-right:1px solid var(--line);padding:24px 18px;display:flex;flex-direction:column;gap:6px;position:sticky;top:0;height:100vh}
.sidebar .brand{display:flex;align-items:center;gap:10px;margin-bottom:24px;padding:0 6px}
.sidebar .brand img{height:34px}
.nav-item{display:flex;align-items:center;gap:11px;padding:11px 14px;border-radius:12px;color:var(--grey-light);font-family:var(--head);font-weight:500;font-size:.92rem;transition:.2s;text-align:left;width:100%}
.nav-item .ico{font-size:1.1rem}
.nav-item:hover{background:rgba(255,255,255,.05);color:#fff}
.nav-item.active{background:var(--grad);color:#fff}
.sidebar .spacer{flex:1}
.sidebar .who{font-size:.8rem;color:var(--dim);padding:0 8px 8px}

.main{padding:28px 34px;overflow-x:hidden}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:26px;flex-wrap:wrap}
.topbar h2{font-size:1.5rem}
.topbar .sub{color:var(--grey);font-size:.9rem}
.topbar-actions{display:flex;gap:10px}

/* Cards / list */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}
.item{background:linear-gradient(160deg,var(--card),var(--bg2));border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.25s}
.item:hover{border-color:var(--line2);transform:translateY(-3px)}
.item .thumb{aspect-ratio:16/10;background:linear-gradient(135deg,#1f2a52,#241a3d);display:grid;place-items:center;color:#fff;font-family:var(--head);font-size:.9rem;text-align:center;padding:10px;background-size:cover;background-position:center}
.item .body{padding:14px 16px}
.item .body h4{font-size:1rem;margin-bottom:3px}
.item .body .meta{font-size:.78rem;color:var(--grey);text-transform:capitalize}
.item .body p{font-size:.84rem;color:var(--grey);margin-top:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.item .actions{display:flex;gap:8px;padding:0 16px 16px}
.chip{display:inline-flex;align-items:center;gap:6px;font-size:.72rem;padding:3px 9px;border-radius:100px;background:rgba(255,255,255,.06);border:1px solid var(--line);color:var(--grey-light)}

/* Table (settings preview) */
.panel{background:linear-gradient(160deg,var(--card),var(--bg2));border:1px solid var(--line);border-radius:var(--radius);padding:26px;max-width:760px}
.panel h3{margin-bottom:4px}
.panel .sub{color:var(--grey);font-size:.88rem;margin-bottom:20px}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:16px}

/* Modal */
.modal-back{position:fixed;inset:0;background:rgba(4,6,12,.75);backdrop-filter:blur(6px);display:grid;place-items:center;padding:20px;z-index:100}
.modal{width:min(560px,100%);max-height:90vh;overflow:auto;background:linear-gradient(160deg,var(--card),var(--bg2));border:1px solid var(--line2);border-radius:22px;padding:28px}
.modal h3{margin-bottom:18px}
.modal .row{display:flex;gap:10px;justify-content:flex-end;margin-top:8px}

/* Upload */
.upload{border:1.5px dashed var(--line2);border-radius:12px;padding:16px;text-align:center;color:var(--grey);font-size:.86rem;cursor:pointer;transition:.2s}
.upload:hover{border-color:var(--secondary);background:rgba(124,58,237,.06)}
.preview{margin-top:10px;border-radius:10px;overflow:hidden;border:1px solid var(--line);max-height:160px;display:none}
.preview.show{display:block}
.preview img{width:100%;object-fit:cover;max-height:160px}

.empty{text-align:center;padding:60px 20px;color:var(--grey)}
.empty .big{font-size:2.4rem;margin-bottom:10px}
.spin{display:inline-block;width:18px;height:18px;border:2px solid rgba(255,255,255,.25);border-top-color:#fff;border-radius:50%;animation:sp .7s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}
.loading{padding:50px;text-align:center;color:var(--grey)}

.view-site{font-size:.85rem;color:var(--grey-light)}
.view-site:hover{color:#fff}

@media(max-width:820px){
  .app{grid-template-columns:1fr}
  .sidebar{position:static;height:auto;flex-direction:row;flex-wrap:wrap;gap:6px}
  .sidebar .brand{width:100%}
  .sidebar .spacer{display:none}
  .two-col{grid-template-columns:1fr}
  .main{padding:20px}
}