:root{--bg-primary: #f4f6f9;--bg-secondary: #ffffff;--bg-tertiary: #eef1f6;--bg-hover: #e3e8f0;--border: #d0d7e2;--text-primary: #1a2332;--text-secondary: #4a5568;--text-muted: #718096;--accent: #2563eb;--accent-hover: #1d4ed8;--success: #059669;--warning: #d97706;--danger: #dc2626;--radius: 8px;--font: "IBM Plex Sans", system-ui, sans-serif;--font-mono: "IBM Plex Mono", monospace}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font);background:var(--bg-primary);color:var(--text-primary);line-height:1.5;min-height:100vh}a{color:var(--accent);text-decoration:none}a:hover{color:var(--accent-hover)}.app-layout{display:flex;min-height:100vh}.sidebar{width:240px;background:var(--bg-secondary);border-right:1px solid var(--border);display:flex;flex-direction:column;flex-shrink:0}.sidebar-brand{padding:1.25rem 1.5rem;border-bottom:1px solid var(--border);font-weight:700;font-size:1.1rem;display:flex;align-items:center;gap:.5rem}.sidebar-brand svg{color:var(--accent)}.sidebar-nav{flex:1;padding:1rem .75rem;display:flex;flex-direction:column;gap:.25rem}.nav-link{display:flex;align-items:center;gap:.75rem;padding:.625rem .875rem;border-radius:var(--radius);color:var(--text-secondary);font-size:.9rem;font-weight:500;transition:all .15s}.nav-link:hover{background:var(--bg-hover);color:var(--text-primary)}.nav-link.active{background:var(--bg-tertiary);color:var(--accent)}.sidebar-footer{padding:1rem 1.5rem;border-top:1px solid var(--border);font-size:.8rem;color:var(--text-muted)}.main-content{flex:1;padding:2rem;overflow-y:auto}.page-header{margin-bottom:2rem}.page-header h1{font-size:1.75rem;font-weight:700;margin-bottom:.25rem}.page-header p{color:var(--text-secondary);font-size:.95rem}.card{background:var(--bg-secondary);border:1px solid 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label{display:block;font-size:.85rem;font-weight:500;margin-bottom:.375rem;color:var(--text-secondary)}input,select,textarea{width:100%;padding:.625rem .875rem;background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius);color:var(--text-primary);font-family:var(--font);font-size:.9rem;transition:border-color .15s}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent)}.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.625rem 1.25rem;border:none;border-radius:var(--radius);font-family:var(--font);font-size:.875rem;font-weight:600;cursor:pointer;transition:all .15s}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-hover)}.btn-secondary{background:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border)}.btn-secondary:hover{background:var(--bg-hover)}.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover{opacity:.9}.btn-sm{padding:.375rem 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1rem;border-radius:var(--radius);margin-bottom:1rem;font-size:.85rem}.success-message{background:#05966914;border:1px solid rgba(5,150,105,.25);color:var(--success);padding:.75rem 1rem;border-radius:var(--radius);margin-bottom:1rem;font-size:.85rem}.mono{font-family:var(--font-mono);font-size:.85rem}.qr-container{text-align:center;margin:1.5rem 0}.qr-container img{max-width:200px;border-radius:var(--radius);background:#fff;padding:.5rem}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0f172a66;display:flex;align-items:center;justify-content:center;z-index:100}.modal{background:var(--bg-secondary);border:1px solid var(--border);border-radius:12px;padding:2rem;width:100%;max-width:520px;max-height:90vh;overflow-y:auto}.modal-wide{max-width:min(960px,95vw)}.modal-wide .vpn-ip-table input{width:100%;min-width:7.5rem;font-size:.85rem;padding:.5rem .625rem}.modal-wide .vpn-ip-table td:nth-child(2){font-size:.75rem;line-height:1.4;white-space:nowrap}.modal-wide 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