:root{--bg: #dbe8e0;--card: #dbe8e0;--shadow-light: #ffffff;--shadow-dark: #becfc4;--accent: #388e3c;--text: #2c4233;--text-dim: #64826d;--success: #4caf50;--danger: #ef5350;--warning: #ff9800}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.landing-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:16px}.landing-card{padding:32px 24px;width:100%;max-width:360px;text-align:center;border-radius:20px;background:var(--card);box-shadow:8px 8px 16px var(--shadow-dark),-8px -8px 16px var(--shadow-light)}.landing-icon{font-size:48px}.landing-subtitle{color:var(--text-dim);margin-bottom:20px}.landing-input{width:100%;padding:14px;font-size:16px;margin-bottom:12px;min-height:44px;color:var(--text);background:var(--bg);border:none;border-radius:12px;box-shadow:inset 4px 4px 8px var(--shadow-dark),inset -4px -4px 8px var(--shadow-light)}.landing-input:focus{outline:none;box-shadow:inset 6px 6px 10px var(--shadow-dark),inset -6px -6px 10px var(--shadow-light)}.landing-button{width:100%;min-height:44px;border-radius:12px;font-size:16px;border:none;cursor:pointer;color:var(--accent);font-weight:700;transition:.2s;background:var(--card);box-shadow:6px 6px 12px var(--shadow-dark),-6px -6px 12px var(--shadow-light)}.landing-button:active{box-shadow:inset 4px 4px 8px var(--shadow-dark),inset -4px -4px 8px var(--shadow-light)}.landing-button:disabled{opacity:.6}.landing-error{color:var(--danger);margin-bottom:10px;font-size:14px}.dashboard{max-width:1200px;margin:0 auto;padding:16px 16px 80px}.dashboard-header h1{font-size:20px;margin:8px 0 16px;color:var(--text)}.status-bar{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:20px}.status-pill{padding:8px 16px;border-radius:20px;font-size:12px;color:var(--text-dim);font-weight:600;background:var(--card);box-shadow:4px 4px 8px var(--shadow-dark),-4px -4px 8px var(--shadow-light)}.conn-online{color:var(--success)}.conn-connecting{color:var(--warning)}.conn-offline,.conn-error{color:var(--danger)}.sensor-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:20px;margin-bottom:28px}.sensor-card{padding:18px;border-radius:16px;transition:.3s;background:var(--card);box-shadow:6px 6px 12px var(--shadow-dark),-6px -6px 12px var(--shadow-light)}.sensor-card.status-warning{box-shadow:inset 4px 4px 10px #ff98001a,6px 6px 12px var(--shadow-dark),-6px -6px 12px var(--shadow-light)}.sensor-card.status-critical{box-shadow:inset 4px 4px 10px #ef53501a,6px 6px 12px var(--shadow-dark),-6px -6px 12px var(--shadow-light);color:var(--danger)}.sensor-card-header{display:flex;align-items:center;gap:8px;margin-bottom:12px;color:var(--text-dim);font-size:13px;font-weight:700}.sensor-icon{font-size:20px}.sensor-value{font-size:28px;font-weight:800;color:var(--text);text-shadow:1px 1px 2px var(--shadow-light)}.sensor-unit{font-size:14px;margin-left:4px;color:var(--text-dim);font-weight:400}.sensor-status-row{display:flex;align-items:center;gap:6px;margin-top:10px;font-size:12px;font-weight:600}.status-dot{width:10px;height:10px;border-radius:50%;box-shadow:inset 1px 1px 3px #0003;background:var(--success)}.status-dot.status-warning{background:var(--warning)}.status-dot.status-critical{background:var(--danger)}.status-dot.status-unknown{background:#999}.sensor-timestamp{font-size:11px;color:var(--text-dim);margin-top:6px}.relay-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:16px;margin-bottom:28px}.relay-button{min-height:64px;border-radius:16px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;font-weight:700;transition:.2s;border:none;cursor:pointer;color:var(--text);background:var(--card);box-shadow:6px 6px 12px var(--shadow-dark),-6px -6px 12px var(--shadow-light)}.relay-button:active{box-shadow:inset 4px 4px 8px var(--shadow-dark),inset -4px -4px 8px var(--shadow-light)}.relay-on{color:var(--accent);box-shadow:inset 4px 4px 8px var(--shadow-dark),inset -4px -4px 8px var(--shadow-light)}.relay-off{color:var(--text-dim)}.relay-button:disabled{opacity:.5;cursor:not-allowed}.charts-section{padding:24px;margin-bottom:24px;border-radius:20px;background:var(--card);box-shadow:8px 8px 16px var(--shadow-dark),-8px -8px 16px var(--shadow-light)}.charts-header{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;margin-bottom:16px}.range-selector{display:flex;gap:8px;padding:6px;border-radius:12px;background:var(--bg);box-shadow:inset 4px 4px 8px var(--shadow-dark),inset -4px -4px 8px var(--shadow-light)}.range-btn{border:none;background:transparent;color:var(--text-dim);border-radius:8px;padding:6px 14px;cursor:pointer;font-weight:700;transition:.2s}.range-btn.active{background:var(--card);color:var(--accent);box-shadow:3px 3px 6px var(--shadow-dark),-3px -3px 6px var(--shadow-light)}.chart-stats{display:flex;gap:16px;flex-wrap:wrap;font-size:12px;color:var(--text-dim);margin-bottom:16px;font-weight:600}.chart-loading{text-align:center;padding:40px;color:var(--text-dim)}.app-footer{position:fixed;bottom:0;left:0;right:0;display:flex;justify-content:space-between;align-items:center;padding:14px 24px;font-size:14px;font-weight:700;color:var(--text-dim);z-index:10;border-radius:20px 20px 0 0;background:var(--card);box-shadow:0 -6px 16px #becfc466}.gear-btn{background:var(--card);border:none;font-size:20px;cursor:pointer;min-width:44px;min-height:44px;border-radius:50%;transition:.2s;display:flex;align-items:center;justify-content:center;box-shadow:4px 4px 8px var(--shadow-dark),-4px -4px 8px var(--shadow-light)}.gear-btn:active{box-shadow:inset 2px 2px 5px var(--shadow-dark),inset -2px -2px 5px var(--shadow-light)}.settings-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#dbe8e0b3;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:flex-end;justify-content:center;z-index:100}.settings-panel{width:100%;max-width:480px;max-height:90vh;overflow-y:auto;border-radius:24px 24px 0 0;padding:28px;background:var(--card);box-shadow:0 -10px 30px #becfc4b3}.settings-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.close-btn{background:var(--card);border:none;color:var(--text);font-size:18px;cursor:pointer;width:44px;height:44px;border-radius:50%;transition:.2s;box-shadow:4px 4px 8px var(--shadow-dark),-4px -4px 8px var(--shadow-light)}.close-btn:active{box-shadow:inset 2px 2px 5px var(--shadow-dark),inset -2px -2px 5px var(--shadow-light)}.settings-panel section{margin-bottom:28px}.settings-panel h3{font-size:16px;margin-bottom:16px;color:var(--text);font-weight:800}.settings-panel label{display:block;font-size:13px;font-weight:700;color:var(--text-dim);margin-bottom:14px}.settings-panel input{display:block;width:100%;margin-top:8px;padding:14px;border-radius:12px;border:none;color:var(--text);min-height:44px;font-weight:600;background:var(--bg);box-shadow:inset 4px 4px 8px var(--shadow-dark),inset -4px -4px 8px var(--shadow-light)}.settings-panel input:focus{outline:none;box-shadow:inset 6px 6px 12px var(--shadow-dark),inset -6px -6px 12px var(--shadow-light)}.settings-panel button{min-height:44px;margin:8px 8px 8px 0;border-radius:12px;border:none;padding:0 24px;cursor:pointer;font-weight:700;transition:.2s;color:var(--text);background:var(--card);box-shadow:4px 4px 8px var(--shadow-dark),-4px -4px 8px var(--shadow-light)}.settings-panel button:active{box-shadow:inset 2px 2px 5px var(--shadow-dark),inset -2px -2px 5px var(--shadow-light)}.save-btn{color:var(--accent);width:100%;font-size:16px;margin-bottom:16px}.danger-btn{color:var(--danger)}.export-btn{display:inline-flex;align-items:center;justify-content:center;text-decoration:none;padding:0 24px;border-radius:12px;min-height:44px;font-weight:700;margin-top:8px;color:var(--text);background:var(--card);box-shadow:4px 4px 8px var(--shadow-dark),-4px -4px 8px var(--shadow-light)}.export-btn:active{box-shadow:inset 2px 2px 5px var(--shadow-dark),inset -2px -2px 5px var(--shadow-light)}.settings-status{text-align:center;margin-top:20px;color:var(--accent);font-size:14px;font-weight:700}@media (min-width: 640px){.settings-overlay{align-items:center}.settings-panel{border-radius:24px}}