:root{--bg-primary: #0a0813;--bg-secondary: #131126;--card-bg: rgba(25, 22, 49, .65);--card-border: rgba(255, 255, 255, .07);--primary: #6366f1;--primary-glow: rgba(99, 102, 241, .35);--secondary: #a855f7;--accent: #06b6d4;--text-main: #f3f4f6;--text-muted: #9ca3af;--text-inverse: #ffffff;--success: #10b981;--warning: #f59e0b;--danger: #ef4444;--danger-glow: rgba(239, 68, 68, .2);--font-family: "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--transition-speed: .25s}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-primary);background-image:radial-gradient(circle at 10% 10%,rgba(99,102,241,.08) 0%,transparent 40%),radial-gradient(circle at 90% 90%,rgba(168,85,247,.08) 0%,transparent 40%);color:var(--text-main);font-family:var(--font-family);-webkit-font-smoothing:antialiased;min-height:100vh;padding-bottom:80px}.app-container{max-width:600px;margin:0 auto;padding:16px}.app-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;padding:8px 4px}.brand{display:flex;align-items:center;gap:8px}.brand h1{font-size:1.25rem;font-weight:700;letter-spacing:-.5px;background:linear-gradient(135deg,var(--text-main),var(--text-muted));-webkit-background-clip:text;-webkit-text-fill-color:transparent}.quick-stats{display:flex;align-items:center;gap:12px}.mini-balance{background:#ffffff0d;border:1px solid rgba(255,255,255,.05);padding:6px 12px;border-radius:99px;font-size:.85rem;font-weight:600;color:var(--text-main)}.navbar{position:fixed;bottom:0;left:0;right:0;background:#131126d9;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-top:1px solid var(--card-border);display:flex;justify-content:space-around;padding:10px 0;z-index:100}.nav-item{background:none;border:none;color:var(--text-muted);display:flex;flex-direction:column;align-items:center;gap:4px;font-size:.75rem;font-weight:500;cursor:pointer;width:20%;transition:color var(--transition-speed)}.nav-item.active{color:var(--primary);font-weight:600}.nav-icon{width:20px;height:20px}.card{background:var(--card-bg);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border:1px solid var(--card-border);border-radius:16px;padding:20px;margin-bottom:16px;box-shadow:0 10px 30px #0003}.card-header{display:flex;align-items:center;gap:10px;margin-bottom:16px}.header-icon{width:24px;height:24px}.card-header h2{font-size:1.15rem;font-weight:700}.description{color:var(--text-muted);font-size:.85rem;line-height:1.4;margin-bottom:16px}.input-field{background:#0003;border:1px solid var(--card-border);border-radius:10px;color:var(--text-main);padding:12px;font-size:.9rem;font-family:var(--font-family);outline:none;width:100%;transition:border var(--transition-speed)}.input-field:focus{border-color:var(--primary)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:10px;font-size:.9rem;font-weight:600;padding:12px 18px;cursor:pointer;border:none;outline:none;font-family:var(--font-family);transition:all var(--transition-speed)}.btn-primary{background:linear-gradient(135deg,var(--primary),var(--secondary));color:var(--text-inverse);box-shadow:0 4px 14px var(--primary-glow)}.btn-primary:hover:not(:disabled){opacity:.9;transform:translateY(-1px)}.btn-secondary{background:#ffffff0f;border:1px solid var(--card-border);color:var(--text-main)}.btn-secondary:hover:not(:disabled){background:#ffffff1a}.btn-danger{background:#ef444426;border:1px solid rgba(239,68,68,.25);color:var(--danger)}.btn-danger:hover:not(:disabled){background:#ef444440}.btn-icon{padding:10px;border-radius:8px}.btn:disabled{opacity:.5;cursor:not-allowed}.full-width{width:100%}.add-device-form{display:flex;gap:10px;margin-bottom:20px}.device-list{display:flex;flex-direction:column;gap:12px}.device-item{background:#ffffff05;border:1px solid rgba(255,255,255,.04);border-radius:12px;padding:16px;display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px}.device-info h3{font-size:.95rem;font-weight:600;margin-bottom:4px}.added-at{font-size:.75rem;color:var(--text-muted)}.cooldown-badge{display:inline-flex;align-items:center;gap:4px;background:var(--danger-glow);color:var(--danger);border:1px solid rgba(239,68,68,.2);padding:3px 8px;border-radius:6px;font-size:.72rem;font-weight:600;margin-top:6px}.device-actions{display:flex;gap:8px}.device-config-expanded{width:100%;border-top:1px solid rgba(255,255,255,.05);margin-top:14px;padding-top:14px;display:flex;flex-direction:column;align-items:center;gap:14px}.qr-container{display:flex;flex-direction:column;align-items:center;text-align:center}.qr-caption{font-size:.75rem;color:var(--text-muted);margin-top:8px;max-width:250px;line-height:1.3}.raw-config-container{width:100%}.config-header{display:flex;justify-content:space-between;align-items:center;font-size:.8rem;color:var(--text-muted);margin-bottom:6px}.btn-link{background:none;border:none;color:var(--primary);display:inline-flex;align-items:center;gap:4px;font-size:.8rem;cursor:pointer}.raw-config-text{background:#0006;border:1px solid rgba(255,255,255,.05);border-radius:8px;padding:10px;font-family:monospace;font-size:.75rem;overflow-x:auto;white-space:pre-wrap;word-break:break-all;width:100%}.balance-display-box{background:linear-gradient(135deg,#6366f126,#a855f726);border:1px solid rgba(99,102,241,.25);border-radius:12px;padding:24px;text-align:center;margin-bottom:20px}.balance-label{font-size:.85rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:1px;display:block;margin-bottom:6px}.balance-amount{font-size:2.25rem;font-weight:800;color:var(--text-main);text-shadow:0 4px 12px rgba(99,102,241,.2)}.topup-section{background:#ffffff05;border:1px solid rgba(255,255,255,.04);border-radius:12px;padding:16px;margin-bottom:20px}.topup-section h3{font-size:.95rem;font-weight:700;margin-bottom:4px}.subtext{font-size:.75rem;color:var(--text-muted);margin-bottom:12px}.quick-select-row{display:flex;gap:8px;margin-bottom:14px}.quick-btn{flex:1;padding:10px;font-size:.85rem}.input-group{display:flex;gap:10px}.transactions-section h3{font-size:.95rem;margin-left:6px}.section-title{display:flex;align-items:center;color:var(--text-muted);margin-bottom:12px}.transaction-list{display:flex;flex-direction:column;gap:8px;max-height:200px;overflow-y:auto;padding-right:4px}.transaction-item{display:flex;justify-content:space-between;align-items:center;padding:10px 0;border-bottom:1px solid rgba(255,255,255,.05)}.transaction-item:last-child{border:none}.tx-details{display:flex;flex-direction:column;gap:2px}.tx-title{font-size:.85rem;font-weight:600}.tx-date{font-size:.7rem;color:var(--text-muted)}.tx-amount{font-size:.9rem;font-weight:700}.tx-amount.positive{color:var(--success)}.tx-amount.negative{color:var(--danger)}.subscription-status-box{background:#ffffff05;border:1px solid rgba(255,255,255,.04);border-radius:12px;padding:16px;margin-bottom:20px}.status-row{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.status-indicator{display:flex;align-items:center;gap:12px}.status-title{display:block;font-size:.95rem;font-weight:700}.status-subtitle{font-size:.78rem;color:var(--text-muted)}.expiry-row{display:flex;justify-content:space-between;border-top:1px solid rgba(255,255,255,.05);padding-top:12px;font-size:.82rem}.expiry-row .label{color:var(--text-muted)}.tariff-grid{display:grid;grid-template-columns:1fr;gap:14px;margin-top:14px}@media (min-width: 480px){.tariff-grid{grid-template-columns:1fr 1fr}}.tariff-card{background:#ffffff05;border:1px solid rgba(255,255,255,.04);border-radius:14px;padding:20px;display:flex;flex-direction:column;position:relative}.tariff-card.featured{background:#6366f10f;border-color:#6366f140;box-shadow:0 4px 20px #6366f11a}.badge-featured{position:absolute;top:10px;right:10px;background:var(--primary);color:var(--text-inverse);font-size:.65rem;font-weight:700;padding:3px 8px;border-radius:4px;text-transform:uppercase}.tariff-name{font-size:1rem;font-weight:700;margin-bottom:8px}.tariff-price-box{margin-bottom:16px}.tariff-price-box .price{font-size:1.5rem;font-weight:800}.tariff-price-box .period{font-size:.78rem;color:var(--text-muted)}.tariff-features{list-style:none;margin-bottom:20px;display:flex;flex-direction:column;gap:8px;flex-grow:1}.tariff-features li{display:flex;align-items:center;gap:6px;font-size:.8rem}.feature-icon{color:var(--secondary)}.constructor-controls{display:flex;flex-direction:column;gap:20px;margin-bottom:24px}.control-group{display:flex;flex-direction:column;gap:6px}.control-labels{display:flex;justify-content:space-between;font-size:.85rem;font-weight:600}.control-value{color:var(--primary);font-weight:700}.slider{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:100%;height:6px;border-radius:99px;background:#ffffff1a;outline:none;transition:background var(--transition-speed)}.slider::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:18px;height:18px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--secondary));cursor:pointer;box-shadow:0 2px 8px var(--primary-glow)}.slider-limits{display:flex;justify-content:space-between;font-size:.7rem;color:var(--text-muted)}.constructor-summary{background:#ffffff05;border:1px solid rgba(255,255,255,.04);border-radius:12px;padding:18px}.constructor-summary h3{font-size:.95rem;margin-bottom:12px}.price-breakdown{display:flex;flex-direction:column;gap:8px;margin-bottom:18px}.breakdown-item{display:flex;justify-content:space-between;font-size:.82rem;color:var(--text-muted)}.divider{border:none;border-top:1px solid rgba(255,255,255,.05);margin:6px 0}.breakdown-total{display:flex;justify-content:space-between;align-items:center;font-weight:700}.total-price{font-size:1.35rem;color:var(--accent)}.constructor-btn{margin-top:8px}.error-banner{background:#ef44441a;border:1px solid rgba(239,68,68,.2);border-radius:10px;color:var(--danger);padding:12px;font-size:.82rem;display:flex;align-items:center;gap:8px;margin-bottom:16px}.info-banner{border-radius:10px;padding:12px;font-size:.82rem;display:flex;align-items:center;gap:8px;margin-bottom:16px}.info-banner.warning{background:#f59e0b1a;border:1px solid rgba(245,158,11,.2);color:var(--warning)}.loader,.empty-state{text-align:center;color:var(--text-muted);font-size:.85rem;padding:20px 0}.spinner{animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}