*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg-primary:    #0f1117;
  --bg-secondary:  #1a1d27;
  --bg-card:       #1e2130;
  --bg-hover:      #252840;
  --accent:        #4f6ef7;
  --accent-hover:  #3d5ce0;
  --success:       #27ae60;
  --danger:        #e55039;
  --warning:       #f39c12;
  --text-primary:  #e8eaf6;
  --text-secondary:#9da5c9;
  --border:        #2d3148;
  --sidebar-w:     220px;
}

body { font-family: 'Segoe UI', system-ui, sans-serif; background: var(--bg-primary); color: var(--text-primary); min-height: 100vh; display: flex; font-size: 14px; }

/* Sidebar */
.sidebar { width: var(--sidebar-w); background: var(--bg-secondary); border-right: 1px solid var(--border); display: flex; flex-direction: column; position: fixed; height: 100vh; z-index: 100; }
.sidebar-brand { display: flex; align-items: center; gap: 10px; padding: 20px 16px; border-bottom: 1px solid var(--border); font-size: 16px; font-weight: 600; }
.brand-icon { font-size: 22px; }
.nav-links { list-style: none; padding: 12px 0; flex: 1; }
.nav-item { display: flex; align-items: center; gap: 10px; padding: 10px 16px; color: var(--text-secondary); text-decoration: none; border-radius: 6px; margin: 2px 8px; transition: all .2s; }
.nav-item:hover, .nav-item.active { background: var(--bg-hover); color: var(--text-primary); }
.sidebar-footer { padding: 16px; border-top: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; font-size: 13px; color: var(--text-secondary); }
.btn-logout { color: var(--danger); text-decoration: none; font-size: 12px; }

/* Main */
.main-content { margin-left: var(--sidebar-w); flex: 1; padding: 24px; }
.page-header { margin-bottom: 20px; }
.page-header h1 { font-size: 20px; font-weight: 600; }

/* Cards */
.cards-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; margin-bottom: 24px; }
.card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px; padding: 20px; }
.card-title { font-size: 13px; color: var(--text-secondary); margin-bottom: 8px; }
.card-value { font-size: 28px; font-weight: 600; }
.card-sub { font-size: 12px; color: var(--text-secondary); margin-top: 4px; }

/* Server cards */
.server-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px; padding: 20px; margin-bottom: 16px; }
.server-header { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.server-icon { font-size: 28px; }
.server-name { font-size: 16px; font-weight: 600; }
.server-actions { display: flex; gap: 8px; margin-top: 16px; flex-wrap: wrap; }

/* Badges */
.badge { display: inline-flex; align-items: center; gap: 5px; padding: 4px 10px; border-radius: 20px; font-size: 12px; font-weight: 500; }
.badge-active  { background: rgba(39,174,96,.15);  color: var(--success); }
.badge-stopped { background: rgba(229,80,57,.15);  color: var(--danger); }
.badge-unknown { background: rgba(157,165,201,.15); color: var(--text-secondary); }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 8px 16px; border-radius: 6px; border: none; cursor: pointer; font-size: 13px; font-weight: 500; text-decoration: none; transition: all .2s; }
.btn-primary  { background: var(--accent);   color: #fff; }
.btn-primary:hover  { background: var(--accent-hover); }
.btn-success  { background: var(--success);  color: #fff; }
.btn-success:hover  { background: #219a52; }
.btn-danger   { background: var(--danger);   color: #fff; }
.btn-danger:hover   { background: #c0392b; }
.btn-warning  { background: var(--warning);  color: #fff; }
.btn-warning:hover  { background: #d68910; }
.btn-secondary { background: var(--bg-hover); color: var(--text-primary); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--border); }
.btn-sm { padding: 5px 10px; font-size: 12px; }

/* Forms */
.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: 13px; color: var(--text-secondary); margin-bottom: 6px; }
.form-control { width: 100%; padding: 9px 12px; background: var(--bg-secondary); border: 1px solid var(--border); border-radius: 6px; color: var(--text-primary); font-size: 14px; }
.form-control:focus { outline: none; border-color: var(--accent); }

/* Table */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th { text-align: left; padding: 10px 12px; font-size: 12px; text-transform: uppercase; letter-spacing: .05em; color: var(--text-secondary); border-bottom: 1px solid var(--border); }
td { padding: 12px; border-bottom: 1px solid var(--border); color: var(--text-primary); font-size: 13px; }
tr:hover td { background: var(--bg-hover); }

/* Log viewer */
.log-viewer { background: #0a0c12; border: 1px solid var(--border); border-radius: 8px; padding: 16px; font-family: 'Courier New', monospace; font-size: 12px; height: 500px; overflow-y: auto; color: #a8ff78; white-space: pre-wrap; word-break: break-all; }

/* File manager */
.file-row { display: flex; align-items: center; gap: 12px; padding: 10px 12px; border-bottom: 1px solid var(--border); cursor: pointer; }
.file-row:hover { background: var(--bg-hover); }
.file-icon { font-size: 18px; width: 24px; text-align: center; }
.file-name { flex: 1; font-size: 13px; }
.file-size { font-size: 12px; color: var(--text-secondary); min-width: 80px; text-align: right; }
.file-actions { display: flex; gap: 6px; }

/* Editor */
.code-editor { width: 100%; height: 500px; background: #0a0c12; border: 1px solid var(--border); border-radius: 8px; padding: 16px; font-family: 'Courier New', monospace; font-size: 13px; color: #e8eaf6; resize: vertical; }

/* Alerts */
.alert { padding: 12px 16px; border-radius: 8px; margin-bottom: 16px; font-size: 13px; }
.alert-success { background: rgba(39,174,96,.1);  border: 1px solid rgba(39,174,96,.3);  color: #2ecc71; }
.alert-danger   { background: rgba(229,80,57,.1);  border: 1px solid rgba(229,80,57,.3);  color: #e74c3c; }
.alert-info     { background: rgba(79,110,247,.1); border: 1px solid rgba(79,110,247,.3); color: #6c8ff8; }

/* Stat row */
.stat-row { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 12px; }
.stat-item { font-size: 12px; color: var(--text-secondary); }
.stat-item strong { color: var(--text-primary); }

/* Login */
.login-wrap { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: var(--bg-primary); }
.login-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 40px; width: 360px; }
.login-title { font-size: 22px; font-weight: 600; text-align: center; margin-bottom: 8px; }
.login-sub { font-size: 13px; color: var(--text-secondary); text-align: center; margin-bottom: 28px; }

/* Breadcrumb */
.breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--text-secondary); margin-bottom: 16px; flex-wrap: wrap; }
.breadcrumb a { color: var(--accent); text-decoration: none; }
.breadcrumb-sep { color: var(--border); }

/* Progress */
.progress { background: var(--bg-secondary); border-radius: 4px; height: 6px; overflow: hidden; margin-top: 6px; }
.progress-bar { height: 100%; border-radius: 4px; background: var(--accent); transition: width .3s; }

/* Disk usage */
.disk-info { font-size: 12px; color: var(--text-secondary); margin-top: 4px; }