/* === 深色科技仪表盘主题 === */
*{margin:0;padding:0;box-sizing:border-box}
:root{--bg:#0a0f1a;--card:rgba(30,41,59,.92);--card-border:rgba(71,85,105,.35);--cyan:#06b6d4;--cyan-light:#22d3ee;--amber:#f59e0b;--violet:#8b5cf6;--red:#ef4444;--green:#10b981;--text-1:#f1f5f9;--text-2:#e2e8f0;--text-3:#94a3b8;--text-4:#64748b;--text-5:#475569;--input-bg:rgba(15,23,42,.8);--input-border:rgba(71,85,105,.5);--font-mono:'SF Mono','Roboto Mono',Menlo,monospace}
html,body{height:100%;background:var(--bg);color:var(--text-1);font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;font-size:14px;overflow:hidden}
.app-container{display:flex;flex-direction:column;height:100vh;max-width:480px;margin:0 auto;position:relative}

/* 蓝牙状态栏 */
.bt-bar{display:flex;align-items:center;justify-content:space-between;padding:10px 14px;background:linear-gradient(145deg,rgba(30,41,59,.95),rgba(15,23,42,.98));border-bottom:1px solid rgba(6,182,212,.2);flex-shrink:0}
.bt-bar-left{display:flex;align-items:center;gap:8px}
.bt-icon{font-size:16px}
.bt-device-name{color:var(--text-2);font-size:13px;font-weight:600}
.bt-bar-right{display:flex;align-items:center;gap:10px}
.bt-frame-label{color:var(--text-4);font-size:12px}
.bt-frame-value{color:var(--cyan-light);font-family:var(--font-mono);font-size:13px;font-weight:700}
.bt-btn{background:linear-gradient(135deg,var(--cyan),#0891b2);border:none;border-radius:6px;color:#fff;font-size:12px;font-weight:600;padding:6px 12px;cursor:pointer;box-shadow:0 2px 8px rgba(6,182,212,.3)}
.bt-btn:hover{opacity:.9}
.bt-btn.connected{background:linear-gradient(135deg,var(--red),#dc2626);box-shadow:0 2px 8px rgba(239,68,68,.3)}

/* 页面内容 */
.page-content{flex:1;overflow-y:auto;padding:10px 12px;padding-bottom:70px}
.page-title{color:var(--text-2);font-size:16px;font-weight:700;letter-spacing:1px;margin-bottom:10px;text-shadow:0 0 12px rgba(6,182,212,.3)}

/* 卡片 */
.tech-card{background:linear-gradient(145deg,var(--card),rgba(15,23,42,.95));border:1px solid var(--card-border);border-radius:12px;padding:14px;margin-bottom:12px;box-shadow:0 4px 20px rgba(0,0,0,.4)}
.section-header{margin-bottom:10px}
.section-title{color:var(--text-2);font-size:14px;font-weight:700;display:block}
.section-subtitle{color:var(--text-4);font-size:11px;display:block;margin-top:2px}

/* HUD 仪表网格 */
.hud-grid{display:grid;gap:10px;grid-template-areas:"volt curr" "rpm rpm";grid-template-columns:1fr 1fr}
.hud-tile{background:linear-gradient(145deg,rgba(30,41,59,.8),rgba(15,23,42,.9));border:1px solid var(--input-border);border-radius:10px;padding:12px}
.hud-tile:nth-child(1){grid-area:volt}
.hud-tile:nth-child(2){grid-area:curr}
.hud-tile:nth-child(3){grid-area:rpm}
.hud-accent-cyan{border-color:rgba(6,182,212,.35);box-shadow:inset 0 1px 0 rgba(6,182,212,.1),0 0 12px rgba(6,182,212,.08)}
.hud-accent-amber{border-color:rgba(245,158,11,.35);box-shadow:inset 0 1px 0 rgba(245,158,11,.1),0 0 12px rgba(245,158,11,.08)}
.hud-accent-violet{border-color:rgba(139,92,246,.35);box-shadow:inset 0 1px 0 rgba(139,92,246,.1),0 0 12px rgba(139,92,246,.08)}
.hud-tile-en{color:var(--text-4);font-size:10px;font-weight:600;letter-spacing:1.5px;display:block;margin-bottom:2px}
.hud-tile-cn{color:var(--text-3);font-size:12px;display:block;margin-bottom:6px}
.hud-tile-value-row{display:flex;align-items:baseline;gap:4px}
.hud-num{color:var(--text-1);font-family:var(--font-mono);font-size:24px;font-weight:700;text-shadow:0 0 10px rgba(6,182,212,.3)}
.hud-num-xl{font-size:32px}
.hud-suffix{color:var(--text-4);font-size:12px;font-weight:600}
.hud-rpm-track{background:rgba(30,41,59,.8);border:1px solid rgba(71,85,105,.4);border-radius:999px;height:10px;margin-top:10px;overflow:hidden}
.hud-rpm-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,#fda4af,#fb923c,#f97316);transition:width .35s cubic-bezier(.4,0,.2,1)}
.hud-rpm-scale{display:flex;justify-content:space-between;color:var(--text-5);font-size:10px;margin-top:4px}

/* 元信息行 */
.hud-meta-row{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin-top:12px;padding-top:12px;border-top:1px solid rgba(71,85,105,.4)}
.hud-meta-item{display:flex;align-items:center;gap:6px}
.hud-meta-label{color:var(--text-4);font-size:11px}
.hud-meta-num{color:var(--text-2);font-family:var(--font-mono);font-size:16px;font-weight:700}
.hud-meta-throttle{background:rgba(16,185,129,.08);border:1px solid rgba(16,185,129,.3);border-radius:8px;padding:4px 10px;flex-direction:column;gap:2px}
.hud-throttle-v{color:#34d399;font-family:var(--font-mono);font-size:14px;font-weight:700}
.hud-throttle-suf{color:var(--green);font-size:10px}
.gear-text{border:1px solid rgba(6,182,212,.4);border-radius:6px;padding:3px 8px;font-size:16px;font-weight:800;color:var(--cyan-light);background:rgba(6,182,212,.1)}
.car-status-value{color:var(--green);font-size:14px;font-weight:700}

/* 温度仪表 */
.telemetry-body{display:flex;align-items:center;gap:10px}
.temp-gauges-row{display:flex;gap:10px;flex:1}
.temp-gauge{display:flex;flex-direction:column;align-items:center;gap:4px}
.temp-gauge-head{display:flex;align-items:baseline;gap:4px;flex-wrap:wrap;justify-content:center}
.temp-car-lab{color:var(--text-4);font-size:11px}
.temp-readout{font-family:var(--font-mono);font-size:16px;font-weight:700}
.temp-readout.amber{color:var(--amber);text-shadow:0 0 8px rgba(245,158,11,.3)}
.temp-readout.cyan{color:var(--cyan);text-shadow:0 0 8px rgba(6,182,212,.3)}
.temp-unit{color:var(--text-4);font-size:11px}
.temp-arc{width:70px;height:35px;border-top-left-radius:70px;border-top-right-radius:70px;overflow:hidden;position:relative}
.temp-arc-mos{background:linear-gradient(180deg,rgba(245,158,11,.08),rgba(245,158,11,.15));border:1px solid rgba(245,158,11,.3)}
.temp-arc-motor{background:linear-gradient(180deg,rgba(6,182,212,.08),rgba(6,182,212,.15));border:1px solid rgba(6,182,212,.3)}
.temp-needle{position:absolute;bottom:0;left:50%;width:2px;height:30px;border-radius:1px;transform-origin:bottom center;transition:transform .3s ease}
.temp-needle-mos{background:linear-gradient(180deg,#fbbf24,#f59e0b);box-shadow:0 0 4px rgba(245,158,11,.5)}
.temp-needle-motor{background:linear-gradient(180deg,#22d3ee,#06b6d4);box-shadow:0 0 4px rgba(6,182,212,.5)}
.phase-strip{background:rgba(30,41,59,.6);border:1px solid rgba(71,85,105,.4);border-radius:8px;padding:8px 10px;display:flex;flex-direction:column;gap:6px;min-width:90px}
.phase-line{display:flex;align-items:baseline;gap:6px;justify-content:space-between}
.phase-tag{color:var(--text-4);font-size:11px;font-weight:600}
.phase-val{color:var(--text-2);font-family:var(--font-mono);font-size:14px;font-weight:700}
.phase-unit{color:var(--text-5);font-size:11px}

/* 故障卡 */
.fault-card{border-color:rgba(239,68,68,.2)}
.status-bar{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.status-pill{background:rgba(30,41,59,.6);border:1px solid rgba(71,85,105,.4);border-radius:999px;color:var(--text-3);font-size:11px;padding:4px 10px;display:inline-flex;align-items:center;gap:4px;transition:all .2s}
.status-pill::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--text-5)}
.status-pill.active{background:rgba(6,182,212,.1);border-color:rgba(6,182,212,.45);color:var(--cyan-light)}
.status-pill.active::before{background:var(--cyan);box-shadow:0 0 4px rgba(6,182,212,.6)}
.fault-list{margin-top:8px;display:flex;flex-wrap:wrap;gap:6px}
.fault-item{color:#fca5a5;font-size:11px;font-weight:500;background:rgba(239,68,68,.08);border:1px solid rgba(239,68,68,.2);border-radius:4px;padding:2px 8px}

/* 参数页 */
.top-action-row{display:flex;gap:10px;margin-bottom:12px}
.top-action-btn{flex:1;background:rgba(6,182,212,.1);border:1px solid rgba(6,182,212,.3);border-radius:8px;color:var(--cyan-light);font-size:13px;font-weight:600;padding:10px;cursor:pointer}
.top-action-btn:hover{background:rgba(6,182,212,.2)}
.accordion-card{background:linear-gradient(145deg,var(--card),rgba(15,23,42,.95));border:1px solid var(--card-border);border-radius:12px;margin-bottom:10px;overflow:hidden}
.accordion-head{display:flex;align-items:center;justify-content:space-between;padding:14px;cursor:pointer;border-bottom:1px solid transparent}
.accordion-head:hover{background:rgba(6,182,212,.03)}
.accordion-title{color:var(--text-2);font-size:14px;font-weight:600}
.accordion-arrow{color:var(--text-4);font-size:10px;transition:transform .2s}
.accordion-body{padding:12px 14px;border-top:1px solid rgba(71,85,105,.3)}
.param-group{display:flex;flex-direction:column;gap:10px}
.param-item{display:flex;align-items:center;gap:10px;padding:6px 0;border-bottom:1px solid rgba(71,85,105,.2)}
.param-item:last-child{border-bottom:none}
.param-label{color:var(--text-3);font-size:13px;flex:1;min-width:100px}
.param-value{color:var(--text-1);font-size:13px;font-weight:500;text-align:right}
.param-input{background:var(--input-bg);border:1px solid var(--input-border);border-radius:6px;color:var(--text-1);font-size:13px;padding:6px 10px;width:100px;text-align:right;outline:none}
.param-input:focus{border-color:var(--cyan)}
.param-unit{color:var(--text-4);font-size:12px;min-width:30px}
.gear-section{margin-bottom:14px;padding:10px;background:rgba(15,23,42,.5);border:1px solid rgba(6,182,212,.15);border-radius:8px}
.gear-title{color:var(--text-2);font-size:13px;font-weight:700;margin-bottom:8px;padding-bottom:6px;border-bottom:1px solid rgba(71,85,105,.3)}
.action-buttons{display:flex;gap:10px;margin-top:14px;padding-top:12px;border-top:1px solid rgba(71,85,105,.3)}
.bottom-action-bar{display:flex;gap:8px;padding:10px 14px;background:rgba(15,23,42,.9);border-top:1px solid rgba(71,85,105,.3);margin-top:14px;border-radius:10px}

/* 按钮 */
.btn{border:none;border-radius:8px;font-size:13px;font-weight:600;padding:10px 16px;cursor:pointer;flex:1;text-align:center}
.btn-primary{background:linear-gradient(135deg,var(--cyan),#0891b2);color:#fff;box-shadow:0 2px 10px rgba(6,182,212,.3)}
.btn-save{background:linear-gradient(135deg,var(--cyan),#0891b2);color:#fff;box-shadow:0 2px 10px rgba(6,182,212,.3)}
.btn-reset{background:rgba(71,85,105,.4);color:var(--text-3)}
.btn-danger{background:linear-gradient(135deg,var(--red),#dc2626);color:#fff;box-shadow:0 2px 10px rgba(239,68,68,.3)}
.btn-warning{background:linear-gradient(135deg,var(--amber),#d97706);color:#fff;box-shadow:0 2px 10px rgba(245,158,11,.3)}
.btn-block{width:100%;display:block}
.btn:hover{opacity:.9}
.btn:active{transform:translateY(1px)}

/* Tab 栏 */
.tab-bar{position:fixed;bottom:0;left:50%;transform:translateX(-50%);width:100%;max-width:480px;display:flex;background:linear-gradient(180deg,rgba(15,23,42,.97),rgba(10,15,26,.99));border-top:1px solid rgba(6,182,212,.15);padding:8px 0;padding-bottom:calc(8px + env(safe-area-inset-bottom,0px));z-index:100}
.tab-item{flex:1;display:flex;flex-direction:column;align-items:center;gap:3px;text-decoration:none;color:var(--text-4);font-size:11px;padding:4px 0;transition:color .2s}
.tab-item.active{color:var(--cyan-light)}
.tab-item .tab-icon{width:22px;height:22px;fill:currentColor}
.tab-item.active .tab-icon{filter:drop-shadow(0 0 4px rgba(6,182,212,.5))}

/* Profile 页 */
.user-card{display:flex;align-items:center;gap:14px}
.user-avatar{width:56px;height:56px;border-radius:50%;background:rgba(15,23,42,.6);border:2px solid rgba(6,182,212,.3);display:flex;align-items:center;justify-content:center}
.user-info{display:flex;flex-direction:column;gap:2px}
.user-name{color:var(--text-1);font-size:18px;font-weight:700}
.user-role{color:var(--cyan-light);font-size:12px;font-weight:600}
.info-list{display:flex;flex-direction:column;gap:8px}
.info-item{display:flex;justify-content:space-between;align-items:center;padding:6px 0;border-bottom:1px solid rgba(71,85,105,.25)}
.info-item:last-child{border-bottom:none}
.info-label{color:var(--text-4);font-size:12px}
.info-value{color:var(--text-2);font-size:12px;font-weight:500}
.info-value.mono{font-family:var(--font-mono);font-size:11px;color:var(--text-3)}
.log-area{background:rgba(15,23,42,.8);border:1px solid var(--input-border);border-radius:8px;padding:10px;min-height:100px;max-height:200px;overflow-y:auto;font-family:var(--font-mono);font-size:11px;color:var(--cyan-light);line-height:1.6}
.log-empty{color:var(--text-4);font-family:sans-serif}
.disclaimer{color:var(--text-5);font-size:10px;text-align:center;margin-top:16px;line-height:1.5}

/* 弹窗 */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.7);display:flex;align-items:center;justify-content:center;z-index:1000}
.modal-card{background:linear-gradient(145deg,rgba(30,41,59,.98),rgba(15,23,42,.99));border:1px solid rgba(6,182,212,.25);border-radius:16px;padding:24px;width:85%;max-width:360px;box-shadow:0 10px 40px rgba(0,0,0,.5)}
.modal-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}
.modal-header h3{color:var(--text-1);font-size:16px}
.modal-close{background:none;border:none;color:var(--text-3);font-size:24px;cursor:pointer;padding:4px 8px}
.modal-body{margin-bottom:16px}
.scan-hint{color:var(--text-3);font-size:13px;margin-bottom:10px}
.scan-mode-group{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:10px}
.scan-mode-option{display:flex;align-items:center;gap:4px;background:rgba(30,41,59,.6);border:1px solid rgba(71,85,105,.4);border-radius:6px;padding:6px 10px;cursor:pointer;font-size:12px;color:var(--text-3);transition:all .2s}
.scan-mode-option:has(input:checked){background:rgba(6,182,212,.12);border-color:rgba(6,182,212,.4);color:var(--cyan-light)}
.scan-mode-option input[type=radio]{accent-color:var(--cyan);width:14px;height:14px}
.scan-name-input{margin-bottom:10px}
.scan-compat-info{color:var(--text-5);font-size:11px;margin-top:8px;line-height:1.5}
.scan-status{color:var(--cyan-light);font-size:13px;font-weight:600}
.modal-footer{text-align:right}

/* 开关 Toggle Switch */
.switch-label{position:relative;display:inline-block;width:44px;height:24px;cursor:pointer;flex-shrink:0}
.switch-label input{opacity:0;width:0;height:0}
.switch-slider{position:absolute;inset:0;background:rgba(71,85,105,.5);border-radius:24px;transition:all .25s}
.switch-slider::before{content:'';position:absolute;width:18px;height:18px;left:3px;bottom:3px;background:#fff;border-radius:50%;transition:transform .25s}
.switch-label input:checked+.switch-slider{background:var(--cyan);box-shadow:0 0 8px rgba(6,182,212,.4)}
.switch-label input:checked+.switch-slider::before{transform:translateX(20px)}

/* 预设按钮行 */
.preset-row{display:flex;gap:8px;margin-bottom:12px}
.preset-row .btn{padding:6px 12px;font-size:12px;min-width:50px;flex:none}

/* RPM 回馈网格 */
.rpm-feedback-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.rpm-feedback-item{display:flex;align-items:center;gap:6px;padding:4px 0}
.rpm-feedback-item .param-label{font-size:12px;flex:1}
.rpm-feedback-item .param-input{width:60px;font-size:12px;padding:4px 6px}

/* SPA 页面视图 */
.page-view{display:block;animation:fadeIn .2s ease}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}

/* 响应式 */
@media(min-width:481px){.app-container{border-left:1px solid rgba(6,182,212,.1);border-right:1px solid rgba(6,182,212,.1)}}