*{box-sizing:border-box;margin:0;padding:0}
body{font-family:system-ui,-apple-system,sans-serif;background:#0d0d1a;color:#e0e0e0;min-height:100vh}
a{color:#00d4ff;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;outline:none}
input{font-family:inherit;outline:none}

/* ── Login ── */
.screen{display:none}
.screen.active{display:flex}
#login-screen{align-items:center;justify-content:center;min-height:100vh}
.login-card{background:#16161e;border:1px solid #2a2a3e;border-radius:12px;padding:40px;width:100%;max-width:380px;text-align:center}
.login-logo{font-size:48px;margin-bottom:12px}
.login-card h1{font-size:22px;font-weight:700;margin-bottom:6px;color:#fff}
.login-sub{font-size:14px;color:#888;margin-bottom:28px}
.field{text-align:left;margin-bottom:16px}
.field label{font-size:12px;color:#888;display:block;margin-bottom:6px}
.field input{width:100%;background:#0d0d1a;border:1px solid #2a2a3e;border-radius:8px;padding:10px 14px;color:#e0e0e0;font-size:15px;transition:border 0.2s}
.field input:focus{border-color:#00d4ff}
.login-card button{width:100%;background:#00d4ff;color:#0d0d1a;font-weight:700;font-size:15px;padding:12px;border-radius:8px;margin-top:8px;transition:opacity 0.2s}
.login-card button:hover{opacity:0.85}
.msg{font-size:13px;margin-top:10px;min-height:18px}
.msg.error{color:#ff4d6a}
.msg.ok{color:#00d4ff}

/* ── Dashboard ── */
#dashboard-screen{flex-direction:column;min-height:100vh}
.topbar{background:#16161e;border-bottom:1px solid #2a2a3e;padding:0 24px;height:60px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:10}
.topbar-left{display:flex;align-items:center;gap:10px}
.logo-icon{font-size:24px}
.logo-text{font-size:18px;font-weight:700;color:#fff}
.topbar-right{display:flex;align-items:center;gap:12px}
.user-name{font-size:14px;color:#888}
.btn-icon{background:#1e1e2e;border:1px solid #2a2a3e;color:#e0e0e0;padding:7px 10px;border-radius:8px;font-size:16px;transition:background 0.2s}
.btn-icon:hover{background:#2a2a3e}
main{padding:24px;max-width:1200px;width:100%;margin:0 auto}
.section-title{font-size:13px;color:#888;text-transform:uppercase;letter-spacing:1px;margin-bottom:16px}
.instances-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}
.instance-card{background:#16161e;border:1px solid #2a2a3e;border-radius:10px;padding:20px;transition:border-color 0.2s}
.instance-card:hover{border-color:#3a3a4e}
.card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.card-name{font-size:16px;font-weight:600;color:#fff;word-break:break-all}
.card-status{font-size:12px;padding:3px 10px;border-radius:20px;font-weight:600}
.card-status.online{background:rgba(0,212,255,0.15);color:#00d4ff}
.card-status.offline{background:rgba(255,77,106,0.15);color:#ff4d6a}
.card-info{font-size:13px;color:#888;margin-bottom:14px}
.card-info div{margin-top:4px}
.card-actions{display:flex;gap:8px}
.card-actions button{flex:1;padding:8px;border-radius:7px;font-size:13px;font-weight:600;transition:opacity 0.2s}
.card-actions button:hover{opacity:0.85}
.btn-connect{background:#00d4ff;color:#0d0d1a}
.btn-disconnect{background:#1e1e2e;border:1px solid #2a2a3e;color:#e0e0e0}
.btn-status{background:#1e1e2e;border:1px solid #2a2a3e;color:#e0e0e0}

/* ── Modal ── */
.modal{position:fixed;inset:0;background:rgba(0,0,0,0.7);display:none;align-items:center;justify-content:center;z-index:100}
.modal.active{display:flex}
.modal-box{background:#16161e;border:1px solid #2a2a3e;border-radius:12px;padding:32px;width:100%;max-width:400px}
.modal-box h2{font-size:18px;margin-bottom:20px;color:#fff}
.modal-actions{display:flex;gap:10px;margin-top:20px}
.modal-actions button{flex:1;padding:10px;border-radius:8px;font-weight:600;transition:opacity 0.2s}
.modal-actions button:hover{opacity:0.85}
.btn-cancel{background:#1e1e2e;border:1px solid #2a2a3e;color:#e0e0e0}
.modal-box button[type="submit"]{background:#00d4ff;color:#0d0d1a}
.loading{opacity:0.6;pointer-events:none}