:root{
  --primary:#1e40af; --primary-fg:#fff;
  --panel:#0f172a; --panel-fg:#fff;
  --bg:#f6f7fb; --card:#fff; --fg:#0f172a; --muted:#64748b;
  --border:#e5e7eb; --accent:#f59e0b; --accent-fg:#111827;
  --success:#16a34a; --success-fg:#fff;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--fg);font-family:Rubik,system-ui,-apple-system,Segoe UI,Roboto,sans-serif}
a{color:inherit;text-decoration:none}
.container{max-width:960px;margin:0 auto;padding:0 16px}
.main{padding:24px 16px 48px}

.site-header{background:var(--primary);color:var(--primary-fg)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:16px 16px}
.brand{font-weight:900;font-size:28px;letter-spacing:-.02em}

.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 16px;border-radius:8px;font-weight:600;font-size:14px;border:0;cursor:pointer}
.btn-light{background:#fff;color:var(--fg)}
.btn-primary{background:var(--primary);color:#fff}
.btn-success{background:var(--success);color:var(--success-fg);padding:16px;font-size:16px;font-weight:800;text-transform:uppercase;letter-spacing:.02em;width:100%;justify-content:center}
.btn-danger{background:#dc2626;color:#fff}
.btn-ghost{background:transparent;color:var(--primary)}
.btn:disabled{opacity:.6;cursor:not-allowed}

.card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:20px}
.panel{background:var(--panel);color:var(--panel-fg);border-radius:12px;padding:24px}

.hero h1{font-size:clamp(28px,5vw,44px);font-weight:900;line-height:1.1;margin:0}
.hero p{color:#cbd5e1;max-width:640px;margin-top:12px}

.features{display:grid;gap:12px;margin-top:24px}
@media(min-width:640px){.features{grid-template-columns:repeat(3,1fr)}}

.file-hero{background:var(--panel);color:#fff;border-radius:12px;padding:20px}
.file-hero-top{display:flex;gap:16px;align-items:flex-start}
.file-badge{position:relative;flex:0 0 auto;width:64px;height:80px;background:var(--accent);color:var(--accent-fg);border-radius:6px;display:flex;align-items:flex-end;justify-content:center;padding-bottom:6px;font-size:10px;font-weight:800;letter-spacing:.03em}
.file-badge::before{content:"";position:absolute;top:0;right:0;width:16px;height:16px;background:rgba(0,0,0,.2);border-bottom-left-radius:6px}
.file-hero h1{font-size:20px;font-weight:800;margin:0;word-break:break-word}
.file-hero .meta{color:rgba(255,255,255,.7);font-size:14px;margin-top:8px}
.file-hero-bar{background:rgba(15,23,42,.95);color:rgba(255,255,255,.8);padding:12px 20px;font-size:14px;display:flex;justify-content:space-between;gap:8px;flex-wrap:wrap;border-bottom-left-radius:12px;border-bottom-right-radius:12px;margin-top:-2px}

.meta-list{background:#fff;border:1px solid var(--border);border-radius:12px;margin-top:20px;overflow:hidden}
.meta-row{display:flex;justify-content:space-between;gap:16px;padding:14px 20px;font-size:14px;border-top:1px solid var(--border)}
.meta-row:first-child{border-top:0}
.meta-row .k{font-weight:700;text-transform:uppercase}
.meta-row .v{color:var(--muted);text-align:right}
.meta-row .v .brand-inline{color:var(--primary);font-weight:700}

.share{background:rgba(30,64,175,.08);border:1px solid var(--border);border-radius:12px;padding:20px;margin-top:20px}
.share-input{display:flex;background:#fff;border:1px solid var(--border);border-radius:8px;overflow:hidden;margin-top:12px}
.share-input input{flex:1;border:0;padding:10px 12px;font-size:14px;outline:0;min-width:0;background:transparent}
.share-input button{border:0;border-left:1px solid var(--border);background:#f9fafb;padding:0 16px;font-weight:600;cursor:pointer;font-size:14px}

.form-row{margin-bottom:14px}
.form-row label{display:block;font-size:14px;font-weight:600;margin-bottom:4px}
.form-row input, .form-row select, .form-row textarea{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:8px;font-size:14px;font-family:inherit;background:#fff}
.form-row textarea{min-height:160px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px}
.two-col{display:grid;gap:12px}
@media(min-width:640px){.two-col{grid-template-columns:1fr 1fr}}

.site-footer{border-top:1px solid var(--border);color:var(--muted);font-size:14px;padding:20px 0;text-align:center;margin-top:40px}

.toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);background:#111827;color:#fff;padding:10px 16px;border-radius:8px;font-size:14px;opacity:0;transition:opacity .2s;z-index:100}
.toast.show{opacity:1}

.flash{padding:12px 16px;border-radius:8px;margin-bottom:16px;font-size:14px}
.flash-err{background:#fee2e2;color:#991b1b}
.flash-ok{background:#dcfce7;color:#166534}

/* Admin table + mobile cards */
.admin-table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--border);border-radius:12px;overflow:hidden;font-size:14px}
.admin-table th,.admin-table td{padding:12px;text-align:left;border-top:1px solid var(--border)}
.admin-table thead th{background:#f9fafb;font-weight:700;border-top:0}
.admin-table td.name{max-width:280px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.mobile-only{display:block}
.desktop-only{display:none}
@media(min-width:640px){
  .mobile-only{display:none}
  .desktop-only{display:block}
}
.file-card{background:#fff;border:1px solid var(--border);border-radius:12px;padding:14px;margin-bottom:12px}
.file-card .fname{font-weight:600;word-break:break-all}
.file-card .fmeta{color:var(--muted);font-size:13px;margin-top:4px}
.file-card .facts{display:flex;gap:8px;margin-top:10px}
.file-card .facts .btn{flex:1;justify-content:center}

.h1{font-size:24px;font-weight:800;margin:0 0 4px}
.muted{color:var(--muted)}
.section-title{font-size:18px;font-weight:700;margin:28px 0 12px}