:root{--bg: #f5f5f7;--surface: #fff;--text: #1d1d1f;--text-secondary: #6e6e73;--accent: #0071e3;--accent-hover: #0077ed;--danger: #ff3b30;--success: #34c759;--border: #d2d2d7;--radius: 12px;--shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06)}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);line-height:1.5}.container{max-width:640px;margin:0 auto;padding:0 20px}.header{background:var(--surface);border-bottom:1px solid var(--border);padding:16px 0;position:sticky;top:0;z-index:10}.header-inner{display:flex;align-items:center;justify-content:space-between}.header h1{font-size:20px;font-weight:700}.header-phone{font-size:14px;color:var(--text-secondary)}.card{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px;margin-bottom:12px}.card-title{font-size:17px;font-weight:600;margin-bottom:4px}.card-meta{font-size:13px;color:var(--text-secondary)}.input{width:100%;padding:12px 16px;border:1px solid var(--border);border-radius:10px;font-size:16px;background:var(--surface);color:var(--text);outline:none;transition:border-color .15s}.input:focus{border-color:var(--accent)}.input-group{margin-bottom:16px}.input-label{display:block;font-size:13px;font-weight:600;color:var(--text-secondary);margin-bottom:6px;text-transform:uppercase;letter-spacing:.5px}.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 24px;border:none;border-radius:10px;font-size:16px;font-weight:600;cursor:pointer;transition:background-color .15s,opacity .15s;width:100%}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover:not(:disabled){background:var(--accent-hover)}.btn-danger{background:var(--danger);color:#fff}.btn-outline{background:transparent;border:1px solid var(--border);color:var(--text)}.btn-sm{padding:8px 16px;font-size:14px;width:auto}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center}.login-card{width:100%;max-width:400px;padding:40px 32px}.login-title{font-size:28px;font-weight:700;text-align:center;margin-bottom:8px}.login-subtitle{text-align:center;color:var(--text-secondary);margin-bottom:32px}.page-title{font-size:28px;font-weight:700;margin:24px 0 16px}.empty-state{text-align:center;padding:48px 20px;color:var(--text-secondary)}.empty-state p{margin-bottom:16px}.device-card{display:flex;align-items:center;gap:16px;cursor:pointer;text-decoration:none;color:inherit}.device-card:hover{opacity:.7}.device-icon{width:44px;height:44px;background:var(--bg);border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:22px;flex-shrink:0}.device-info{flex:1;min-width:0}.device-status{display:inline-flex;align-items:center;gap:4px;font-size:12px;color:var(--text-secondary)}.status-dot{width:6px;height:6px;border-radius:50%;background:var(--border)}.status-dot.online{background:var(--success)}.section{margin-bottom:24px}.section-title{font-size:13px;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px;margin-bottom:8px}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;display:flex;align-items:center;justify-content:center;z-index:100;padding:20px}.modal{background:var(--surface);border-radius:var(--radius);padding:24px;width:100%;max-width:400px;box-shadow:0 20px 60px #0003}.modal-title{font-size:20px;font-weight:700;margin-bottom:16px}.modal-actions{display:flex;gap:8px;margin-top:20px}.modal-actions .btn{flex:1}.contact-row{display:flex;align-items:center;justify-content:space-between;padding:12px 0;border-bottom:1px solid var(--border)}.contact-row:last-child{border-bottom:none}.contact-name{font-weight:500}.contact-number{font-size:13px;color:var(--text-secondary)}.error{background:#fef2f2;color:var(--danger);padding:12px 16px;border-radius:10px;font-size:14px;margin-bottom:16px}.spinner{display:flex;align-items:center;justify-content:center;padding:48px}.spinner:after{content:"";width:24px;height:24px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .6s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.back-link{display:inline-flex;align-items:center;gap:4px;color:var(--accent);text-decoration:none;font-size:14px;font-weight:500;margin:16px 0 8px}