:root{--bg:#000;--panel:#111;--panel-light:#1c1c1e;--accent:#007aff;--accent-glow:#007aff4d;--success:#34c759;--danger:#ff3b30;--text:#fff;--text-dim:#8e8e93;--glass:#ffffff0d;--glass-border:#ffffff1a}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;overflow-x:hidden}.app-container{flex-direction:column;min-height:100vh;display:flex}.glass-nav{z-index:100;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-bottom:1px solid var(--glass-border);background:#000000b3;justify-content:space-between;align-items:center;padding:16px 32px;display:flex;position:sticky;top:0}.brand h1{letter-spacing:2px;background:linear-gradient(135deg,#fff 0%,#888 100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text;font-size:18px}.brand span{color:var(--text-dim);text-transform:uppercase;letter-spacing:1px;font-size:10px}.nav-tabs{background:var(--glass);border-radius:12px;gap:8px;padding:4px;display:flex}.nav-tabs button{color:var(--text-dim);cursor:pointer;background:0 0;border:none;border-radius:8px;padding:8px 16px;font-size:12px;font-weight:600;transition:all .2s}.nav-tabs button.active{background:var(--panel-light);color:var(--text);box-shadow:0 4px 12px #00000080}.content{flex:1;width:100%;max-width:1200px;margin:0 auto;padding:32px}.sensor-grid{grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px;display:grid}.sensor-card{background:var(--panel);border:1px solid var(--glass-border);border-radius:24px;padding:32px;transition:transform .3s}.sensor-card:hover{border-color:var(--accent);transform:translateY(-5px)}.sensor-card h3{color:var(--text-dim);text-transform:uppercase;letter-spacing:1px;margin-bottom:16px;font-size:12px}.sensor-card .value{letter-spacing:-2px;font-size:48px;font-weight:700}.sensor-card .value span{color:var(--text-dim);margin-left:8px;font-size:18px}.card{background:var(--panel);border:1px solid var(--glass-border);border-radius:24px;margin-bottom:24px;padding:32px}.card-header{justify-content:space-between;align-items:center;margin-bottom:24px;display:flex}.rtc-info-grid,.sys-info-grid{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;display:grid}.rtc-item,.info-row{background:var(--panel-light);border-radius:16px;flex-direction:column;gap:8px;padding:20px;display:flex}.rtc-item span,.info-row span{color:var(--text-dim);text-transform:uppercase;font-size:10px}.rtc-item strong,.info-row strong{font-family:SF Mono,monospace;font-size:14px}.relay-grid{grid-template-columns:repeat(2,1fr);gap:16px;display:grid}.relay-grid button{background:var(--panel-light);border:1px solid var(--glass-border);color:var(--text-dim);cursor:pointer;border-radius:16px;padding:24px;font-weight:700}.relay-grid button.active{background:var(--accent);color:#fff;box-shadow:0 0 20px var(--accent-glow)}.input-grid{grid-template-columns:repeat(4,1fr);gap:12px;display:grid}.input-item{background:var(--panel-light);text-align:center;color:var(--text-dim);border-radius:12px;padding:12px;font-size:10px;font-weight:700}.input-item.active{color:var(--success);border-color:var(--success);background:#34c7591a;border:1px solid}.device-list{background:var(--bg);border-radius:16px;overflow:hidden}.device-item{border-bottom:1px solid var(--glass-border);grid-template-columns:1fr 2fr 2fr 1fr;padding:16px;font-size:13px;display:grid}.device-item.header{background:var(--panel-light);color:var(--text-dim);font-size:11px;font-weight:700}.device-item .online{color:var(--success);font-weight:700}.wifi-setup{flex-direction:column;gap:16px;margin-top:24px;display:flex}.wifi-setup input,.wifi-setup select,.wifi-setup button{background:var(--panel-light);border:1px solid var(--glass-border);color:#fff;border-radius:12px;padding:12px}.wifi-setup button{background:var(--accent);cursor:pointer;font-weight:700}.connect-btn{background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:100px;padding:10px 24px;font-weight:700}.scan-btn{background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:8px;padding:8px 16px;font-size:12px;font-weight:700}.empty-state{text-align:center;color:var(--text-dim);padding:40px;font-size:14px}.status-msg{color:var(--accent);margin-top:12px;font-size:12px;font-weight:600}