/* ISP Manager — app.css v3 */
:root{
  --bg:#0d1117;--surface:#161b22;--surface2:#1c2333;--surface3:#21262d;
  --border:#21262d;--border-l:#30363d;
  --primary:#3b82f6;--primary-d:#2563eb;--primary-glow:rgba(59,130,246,.15);
  --success:#10b981;--success-bg:rgba(16,185,129,.1);
  --danger:#ef4444;--danger-bg:rgba(239,68,68,.1);
  --warning:#f59e0b;--warning-bg:rgba(245,158,11,.1);
  --info:#8b5cf6;--info-bg:rgba(139,92,246,.1);
  --text:#e6edf3;--text-2:#7d8590;--text-3:#484f58;
  --sidebar-w:220px;--topbar-h:52px;
  --radius:.5rem;--radius-lg:.75rem;
  --font:-apple-system,BlinkMacSystemFont,'Segoe UI',system-ui,sans-serif;
  --font-mono:'SFMono-Regular',Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{background:var(--bg);color:var(--text);font-family:var(--font);font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased}
a{color:var(--primary);text-decoration:none}
a:hover{color:#60a5fa}

/* Shell */
.app-wrap{display:flex;height:100vh;overflow:hidden}

/* Sidebar */
.sidebar{width:var(--sidebar-w);background:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column;flex-shrink:0;overflow-y:auto}
.sidebar-logo{display:flex;align-items:center;gap:.6rem;padding:.9rem 1rem;border-bottom:1px solid var(--border);flex-shrink:0}
.logo-mark{width:28px;height:28px;background:var(--primary);border-radius:.4rem;display:flex;align-items:center;justify-content:center;font-size:.8rem;font-weight:700;color:#fff;flex-shrink:0}
.logo-text{font-weight:600;font-size:.85rem;color:var(--text);line-height:1.2}
.logo-sub{font-size:.67rem;color:var(--text-2);line-height:1.2}
.sidebar-nav{flex:1;padding:.5rem 0}
.nav-group{margin-top:.4rem}
.nav-group-label{font-size:.62rem;font-weight:700;letter-spacing:.09em;text-transform:uppercase;color:var(--text-3);padding:.4rem .9rem .15rem}
.nav-item{display:flex;align-items:center;gap:.5rem;padding:.4rem .8rem;color:var(--text-2);font-size:.8rem;font-weight:500;border-radius:.35rem;margin:1px .4rem;transition:background .1s,color .1s;white-space:nowrap}
.nav-item:hover{background:var(--surface2);color:var(--text);text-decoration:none}
.nav-item.active{background:var(--primary-glow);color:var(--primary)}
.nav-icon{font-size:.78rem;width:14px;text-align:center;flex-shrink:0}
.sidebar-footer{border-top:1px solid var(--border);padding:.4rem 0;flex-shrink:0}
.nav-logout:hover{color:var(--danger);background:var(--danger-bg)}

/* Main column */
.main-col{flex:1;display:flex;flex-direction:column;min-width:0;overflow:hidden}

/* Topbar */
.topbar{height:var(--topbar-h);background:var(--surface);border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 1.5rem;flex-shrink:0;gap:1rem}
.topbar-left{display:flex;align-items:center}
.topbar-right{display:flex;align-items:center;gap:.6rem;flex-shrink:0}
.breadcrumb{display:flex;align-items:center;gap:.35rem;font-size:.8rem;color:var(--text-2)}
.breadcrumb-sep{color:var(--text-3)}
.breadcrumb-current{color:var(--text);font-weight:500}
.topbar-user{display:flex;align-items:center;gap:.5rem;font-size:.8rem;color:var(--text-2)}
.topbar-avatar{width:27px;height:27px;background:var(--primary);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.65rem;font-weight:700;color:#fff;flex-shrink:0}

/* Page body */
.page-body{flex:1;overflow-y:auto;padding:1.5rem}

/* Page header */
.page-header{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:1.4rem;gap:1rem;flex-wrap:wrap}
.page-title{font-size:1.2rem;font-weight:700;color:var(--text);letter-spacing:-.02em}
.page-subtitle{font-size:.77rem;color:var(--text-2);margin-top:.15rem}
.header-actions{display:flex;gap:.5rem;flex-shrink:0;flex-wrap:wrap}

/* Stat grid — KEY FIX: explicit display:grid */
.stats-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(165px,1fr));gap:.85rem;margin-bottom:1.25rem}
.stat-card{display:block;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:1rem 1.1rem}
.stat-label{display:block;font-size:.68rem;font-weight:600;text-transform:uppercase;letter-spacing:.07em;color:var(--text-2);margin-bottom:.45rem}
.stat-value{display:block;font-size:1.6rem;font-weight:700;color:var(--text);line-height:1;letter-spacing:-.03em}
.stat-denom{font-size:.95rem;font-weight:400;color:var(--text-2)}
.stat-meta{display:flex;align-items:center;gap:.3rem;font-size:.72rem;color:var(--text-2);margin-top:.4rem}

/* Dots */
.dot{width:6px;height:6px;border-radius:50%;display:inline-block;flex-shrink:0}
.dot-green{background:var(--success)}
.dot-blue{background:var(--primary)}
.dot-amber{background:var(--warning)}
.dot-red{background:var(--danger)}
.dot-purple{background:var(--info)}

/* Cards */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden}
.card.mb-4{margin-bottom:1.1rem}
.card.mt-4{margin-top:1.1rem}
.card-header{display:flex;align-items:center;justify-content:space-between;padding:.85rem 1.1rem;border-bottom:1px solid var(--border);gap:.75rem;flex-wrap:wrap}
.card-title{font-size:.86rem;font-weight:600;color:var(--text)}
.card-subtitle{font-size:.73rem;color:var(--text-2);margin-top:.1rem}

/* Two-col layout */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.col-stack{display:flex;flex-direction:column;gap:1rem}

/* Tables */
.table-wrap{overflow-x:auto}
.table{width:100%;border-collapse:collapse}
.table th{padding:.55rem 1rem;text-align:left;font-size:.67rem;font-weight:600;text-transform:uppercase;letter-spacing:.07em;color:var(--text-2);border-bottom:1px solid var(--border)}
.table td{padding:.65rem 1rem;border-bottom:1px solid var(--border);font-size:.81rem;vertical-align:middle}
.table tr:last-child td{border-bottom:none}
.table tbody tr:hover td{background:var(--surface2)}
.table code{font-family:var(--font-mono);font-size:.75rem;background:var(--surface3);padding:.15rem .4rem;border-radius:.3rem;color:#79c0ff}

/* Badges */
.badge{display:inline-flex;align-items:center;gap:.22rem;padding:.17rem .52rem;border-radius:9999px;font-size:.68rem;font-weight:600;letter-spacing:.02em}
.badge-success{background:var(--success-bg);color:#3fb950}
.badge-danger{background:var(--danger-bg);color:#f85149}
.badge-warning{background:var(--warning-bg);color:#d29922}
.badge-secondary{background:var(--surface3);color:var(--text-2);border:1px solid var(--border-l)}
.badge-info{background:var(--info-bg);color:#bc8cff}
.badge-primary{background:var(--primary-glow);color:#58a6ff}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:.35rem;padding:.44rem .9rem;border-radius:var(--radius);border:1px solid transparent;cursor:pointer;font-size:.79rem;font-weight:500;font-family:var(--font);transition:all .11s;white-space:nowrap;line-height:1.4}
.btn:disabled{opacity:.4;cursor:not-allowed}
.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary)}
.btn-primary:hover{background:var(--primary-d);border-color:var(--primary-d);color:#fff}
.btn-danger{background:var(--danger);color:#fff;border-color:var(--danger)}
.btn-danger:hover{background:#dc2626;color:#fff}
.btn-success{background:var(--success);color:#fff;border-color:var(--success)}
.btn-outline{background:transparent;border-color:var(--border-l);color:var(--text-2)}
.btn-outline:hover{border-color:var(--primary);color:var(--primary)}
.btn-ghost{background:transparent;border-color:transparent;color:var(--text-2)}
.btn-ghost:hover{background:var(--surface2);color:var(--text)}
.btn-sm{padding:.28rem .6rem;font-size:.74rem}
.btn-block{display:flex;width:100%;justify-content:center}

/* Forms */
.form-group{margin-bottom:1rem}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
label{display:block;font-size:.73rem;font-weight:600;color:var(--text-2);margin-bottom:.32rem}
.form-control{display:block;width:100%;padding:.5rem .75rem;background:var(--surface2);border:1px solid var(--border-l);border-radius:var(--radius);color:var(--text);font-size:.81rem;font-family:var(--font);transition:border-color .11s,box-shadow .11s}
.form-control:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-glow)}
.form-control::placeholder{color:var(--text-3)}
select.form-control{cursor:pointer}
.form-hint{font-size:.7rem;color:var(--text-2);margin-top:.28rem}
.input-group{display:flex;gap:.35rem}
.input-group .form-control{flex:1}

/* Modals */
.modal{position:fixed;inset:0;z-index:1000;display:flex;align-items:center;justify-content:center;padding:1rem}
.modal-backdrop{position:fixed;inset:0;background:rgba(0,0,0,.7);backdrop-filter:blur(3px)}
.modal-dialog{background:var(--surface);border:1px solid var(--border-l);border-radius:var(--radius-lg);width:100%;max-width:500px;position:relative;z-index:1;box-shadow:0 20px 50px rgba(0,0,0,.6)}
.modal-header{display:flex;align-items:center;justify-content:space-between;padding:.95rem 1.1rem;border-bottom:1px solid var(--border)}
.modal-header h3{font-size:.88rem;font-weight:600}
.modal-close{background:none;border:none;cursor:pointer;color:var(--text-2);font-size:1rem;padding:.2rem .35rem;border-radius:.3rem;line-height:1}
.modal-close:hover{background:var(--surface2);color:var(--text)}
.modal-body{padding:1.1rem}
.modal-footer{padding:.85rem 1.1rem;border-top:1px solid var(--border);display:flex;justify-content:flex-end;gap:.5rem}

/* Alerts */
.alert{padding:.65rem .9rem;border-radius:var(--radius);font-size:.79rem;display:flex;align-items:flex-start;gap:.5rem;margin-bottom:1rem}
.alert-success{background:var(--success-bg);color:#3fb950;border:1px solid rgba(16,185,129,.2)}
.alert-danger{background:var(--danger-bg);color:#f85149;border:1px solid rgba(239,68,68,.2)}
.alert-warning{background:var(--warning-bg);color:#d29922;border:1px solid rgba(245,158,11,.2)}
.alert-info{background:var(--info-bg);color:#bc8cff;border:1px solid rgba(139,92,246,.2)}
.alert-close{background:none;border:none;cursor:pointer;color:inherit;margin-left:auto;opacity:.6;font-size:.9rem}
.alert-close:hover{opacity:1}

/* Step list */
.step-list{display:flex;flex-direction:column;gap:.3rem}
.step-item{display:flex;align-items:center;gap:.6rem;padding:.52rem .8rem;border-radius:var(--radius);background:var(--surface2);font-size:.79rem}
.step-item.ok{background:var(--success-bg)}
.step-item.fail{background:var(--danger-bg)}
.step-icon{font-size:.82rem;flex-shrink:0;width:15px;text-align:center}
.step-label{font-weight:500;min-width:145px;flex-shrink:0}
.step-detail{color:var(--text-2);font-size:.74rem}

/* Router rows */
.router-row{display:flex;align-items:center;justify-content:space-between;padding:.58rem .9rem;border-bottom:1px solid var(--border);font-size:.81rem}
.router-row:last-child{border-bottom:none}
.router-name{font-weight:500}
.router-ip{font-size:.71rem;color:var(--text-2);margin-top:.05rem}

/* Tabs */
.tabs{display:flex;border-bottom:1px solid var(--border);margin-bottom:1.1rem}
.tab-btn{padding:.52rem .85rem;font-size:.79rem;font-weight:500;color:var(--text-2);background:none;border:none;border-bottom:2px solid transparent;cursor:pointer;transition:all .11s;margin-bottom:-1px}
.tab-btn:hover{color:var(--text)}
.tab-btn.active{color:var(--primary);border-bottom-color:var(--primary)}

/* Utility */
.text-center{text-align:center}
.text-right{text-align:right}
.text-muted{color:var(--text-2)}
.text-success{color:var(--success)}
.text-danger{color:var(--danger)}
.text-warning{color:var(--warning)}
.mono{font-family:var(--font-mono);font-size:.77rem}
.flex{display:flex}
.flex-center{display:flex;align-items:center}
.gap-1{gap:.35rem}
.gap-2{gap:.65rem}
.mt-4{margin-top:1.25rem}
.mb-4{margin-bottom:1.25rem}
.empty-state{padding:2rem;text-align:center;color:var(--text-2);font-size:.8rem}

/* Login — KEY FIX: full page centering */
.login-page{min-height:100vh;width:100%;display:flex;align-items:center;justify-content:center;background:var(--bg)}
.login-card{width:100%;max-width:360px;background:var(--surface);border:1px solid var(--border-l);border-radius:var(--radius-lg);padding:1.75rem;box-shadow:0 16px 40px rgba(0,0,0,.4)}
.login-logo{display:flex;align-items:center;gap:.65rem;margin-bottom:1.5rem}
.login-logo .logo-mark{width:34px;height:34px;font-size:.85rem}
.login-logo h1{font-size:.95rem;font-weight:700;color:var(--text)}
.login-logo p{font-size:.73rem;color:var(--text-2)}

/* Scrollbar */
::-webkit-scrollbar{width:4px;height:4px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--border-l);border-radius:99px}

/* Responsive */
@media(max-width:860px){
  .sidebar{display:none}
  .two-col{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .page-body{padding:1rem}
}