*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",sans-serif;background:#f5f5f7;color:#1d1d1f;min-height:100vh;-webkit-font-smoothing:antialiased}
.app-header{background:rgba(255,255,255,0.85);backdrop-filter:blur(20px);border-bottom:1px solid rgba(0,0,0,0.06);position:sticky;top:0;z-index:100;padding:0 16px;height:56px;display:flex;align-items:center;justify-content:space-between}
.app-header h1{font-size:20px;font-weight:700;background:linear-gradient(135deg,#007aff,#5856d6);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.app-main{max-width:480px;margin:0 auto;padding:12px 16px 100px}
.calorie-card{background:linear-gradient(135deg,#007aff,#5856d6);border-radius:20px;padding:20px;color:#fff;margin-bottom:16px;position:relative;overflow:hidden}
.calorie-date{font-size:14px;opacity:0.85;margin-bottom:12px;font-weight:500}
.calorie-main{display:flex;align-items:center;justify-content:space-between;position:relative;z-index:1}
.calorie-ring{width:100px;height:100px;position:relative}
.calorie-ring svg{transform:rotate(-90deg)}
.calorie-ring circle{fill:none;stroke-width:8}
.calorie-ring .bg{stroke:rgba(255,255,255,0.15)}
.calorie-ring .progress{stroke:#fff;stroke-linecap:round;transition:stroke-dashoffset .8s ease}
.calorie-ring-text{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center}
.calorie-ring-text .num{font-size:24px;font-weight:700}
.calorie-ring-text .label{font-size:11px;opacity:0.75}
.calorie-info{text-align:right}
.calorie-info .big{font-size:32px;font-weight:700}
.calorie-info .small{font-size:14px;opacity:0.8}
.nutrient-row{display:flex;gap:8px;margin-top:14px;position:relative;z-index:1}
.nutrient-item{flex:1;background:rgba(255,255,255,0.12);border-radius:12px;padding:8px 10px;text-align:center}
.nutrient-item .value{font-size:16px;font-weight:600}
.nutrient-item .label{font-size:11px;opacity:0.75}
.action-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:16px}
.action-btn{background:#fff;border:none;border-radius:16px;padding:16px;display:flex;flex-direction:column;align-items:center;gap:4px;cursor:pointer;box-shadow:0 1px 3px rgba(0,0,0,0.04);transition:all .2s;font-size:13px;color:#555;font-weight:500}
.action-btn:hover{transform:translateY(-2px);box-shadow:0 4px 12px rgba(0,0,0,0.08)}
.action-btn .icon{font-size:28px;margin-bottom:2px}
.action-btn.primary{background:linear-gradient(135deg,#007aff,#5856d6);color:#fff}
.tab-bar{background:rgba(255,255,255,0.92);backdrop-filter:blur(20px);border-top:1px solid rgba(0,0,0,0.06);position:fixed;bottom:0;left:0;right:0;display:flex;justify-content:space-around;padding:6px 0;z-index:100}
.tab-item{flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;padding:6px 0;cursor:pointer;border:none;background:none;font-size:11px;color:#8e8e93;transition:color .2s}
.tab-item .icon{font-size:22px;line-height:1}
.tab-item.active{color:#007aff}
.section-title{font-size:16px;font-weight:600;margin:16px 0 8px;display:flex;justify-content:space-between;align-items:center}
.meal-card{background:#fff;border-radius:14px;padding:12px 14px;margin-bottom:8px;display:flex;align-items:center;gap:12px;box-shadow:0 1px 3px rgba(0,0,0,0.04);cursor:pointer}
.meal-card:hover{transform:translateX(4px)}
.meal-icon{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:22px;flex-shrink:0}
.meal-icon.breakfast{background:#fff3e0}
.meal-icon.lunch{background:#e3f2fd}
.meal-icon.dinner{background:#fce4ec}
.meal-icon.snack{background:#f3e5f5}
.meal-info{flex:1;min-width:0}
.meal-info .name{font-weight:600;font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.meal-info .detail{font-size:12px;color:#8e8e93;margin-top:2px}
.meal-cal{text-align:right;flex-shrink:0}
.meal-cal .num{font-weight:700;font-size:16px;color:#007aff}
.meal-cal .unit{font-size:11px;color:#8e8e93}
.empty-state{text-align:center;padding:40px 0;color:#8e8e93}
.empty-state .icon{font-size:48px;margin-bottom:8px}
.weekly-chart{background:#fff;border-radius:16px;padding:16px;box-shadow:0 1px 3px rgba(0,0,0,0.04);margin-bottom:16px}
.weekly-chart h3{font-size:15px;font-weight:600;margin-bottom:12px}
.chart-bars{display:flex;gap:4px;align-items:flex-end;height:100px}
.chart-bar-wrap{flex:1;display:flex;flex-direction:column;align-items:center;gap:4px}
.chart-bar{width:100%;max-width:36px;border-radius:6px 6px 0 0;background:linear-gradient(180deg,#007aff,#5ac8fa);transition:height .6s ease;min-height:4px}
.chart-bar.under{background:linear-gradient(180deg,#34c759,#30d158)}
.chart-bar-label{font-size:10px;color:#8e8e93}
.chart-bar-value{font-size:10px;font-weight:600;color:#1d1d1f}
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,0.4);backdrop-filter:blur(8px);display:none;align-items:flex-end;justify-content:center;z-index:200}
.modal-overlay.show{display:flex}
.modal-content{background:#fff;border-radius:20px 20px 0 0;width:100%;max-width:480px;max-height:90vh;overflow-y:auto;padding:20px}
.modal-title{font-size:18px;font-weight:700;margin-bottom:16px;text-align:center}
.form-group{margin-bottom:14px}
.form-group label{display:block;font-size:13px;font-weight:500;color:#555;margin-bottom:4px}
.form-group input,.form-group select,.form-group textarea{width:100%;padding:10px 12px;border:1.5px solid #e5e5ea;border-radius:10px;font-size:15px;background:#f9f9fb;font-family:inherit}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:#007aff;background:#fff}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.btn{width:100%;padding:12px;border:none;border-radius:12px;font-size:16px;font-weight:600;cursor:pointer}
.btn-primary{background:linear-gradient(135deg,#007aff,#5856d6);color:#fff}
.btn-secondary{background:#f0f0f5;color:#555}
.btn-danger{background:#ff3b30;color:#fff}
.upload-area{border:2px dashed #c7c7cc;border-radius:16px;padding:40px 20px;text-align:center;cursor:pointer;background:#f9f9fb}
.upload-area:hover{border-color:#007aff;background:#f0f0ff}
.upload-area .icon{font-size:48px;margin-bottom:8px}
.upload-area input{display:none}
.preview-area{position:relative;border-radius:16px;overflow:hidden;margin-bottom:12px;display:none}
.preview-area.show{display:block}
.preview-area img{width:100%;max-height:280px;object-fit:cover;border-radius:16px}
.preview-area .retake{position:absolute;top:8px;right:8px;background:rgba(0,0,0,0.5);color:#fff;border:none;border-radius:20px;padding:6px 14px;font-size:13px;cursor:pointer}
.loading-spinner{text-align:center;padding:20px;display:none}
.loading-spinner.show{display:block}
.spinner{width:36px;height:36px;border:3px solid #e5e5ea;border-top-color:#007aff;border-radius:50%;margin:0 auto 8px}
.result-card{background:linear-gradient(135deg,#e8f5e9,#f1f8e9);border-radius:14px;padding:14px;margin:12px 0;display:none}
.result-card.show{display:block}
.result-card .food-name{font-size:18px;font-weight:700;margin-bottom:8px}
.result-nutrients{display:grid;grid-template-columns:1fr 1fr;gap:6px}
.result-nutrients .item{background:rgba(255,255,255,0.7);border-radius:8px;padding:6px 10px;display:flex;justify-content:space-between;font-size:13px}
.result-nutrients .item .val{font-weight:600}
.goal-display{background:#fff;border-radius:14px;padding:14px;margin-bottom:8px;display:flex;justify-content:space-between;align-items:center}
.goal-display .label{color:#8e8e93;font-size:13px}
.goal-display .value{font-weight:600;font-size:16px}
.date-nav{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.date-nav button{background:none;border:none;font-size:20px;cursor:pointer;padding:4px 12px;color:#007aff}
.date-nav .date-text{font-size:15px;font-weight:500}
.toast{position:fixed;top:80px;left:50%;transform:translateX(-50%);background:rgba(0,0,0,0.8);color:#fff;padding:10px 20px;border-radius:12px;font-size:14px;z-index:300;display:none;max-width:90%;text-align:center}
.toast.show{display:block}
#camera-view{width:100%;max-height:300px;border-radius:16px;background:#000;display:none}
#camera-view.show{display:block}

.header-left{display:flex;align-items:center}
.header-right{display:flex;align-items:center;gap:8px}
.u-btn{display:flex;align-items:center;gap:6px;padding:7px 16px;border-radius:20px;border:1.5px solid #e5e5ea;background:#fff;cursor:pointer;font-size:13px;font-weight:500;color:#555;transition:all .2s;text-decoration:none}
.u-btn:hover{border-color:#007aff;color:#007aff;background:#f0f4ff}
.u-btn.pri{background:#007aff;color:#fff;border-color:#007aff}
.u-btn.pri:hover{background:#0056cc}
.u-av{width:28px;height:28px;border-radius:50%;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:600}
.u-dd{position:relative;display:inline-block}
.u-dm{display:none;position:absolute;top:100%;right:0;margin-top:4px;background:#fff;border-radius:12px;box-shadow:0 4px 20px rgba(0,0,0,0.1);min-width:140px;z-index:50;overflow:hidden}
.u-dm.s{display:block}
.u-dm a,.u-dm button{display:block;width:100%;padding:10px 16px;border:none;background:none;text-align:left;font-size:13px;cursor:pointer;color:#333;text-decoration:none}
.u-dm a:hover,.u-dm button:hover{background:#f5f5f7}
.u-dm .d{color:#ff3b30}
.u-dm .dv{border-top:1px solid #f0f0f0;margin:4px 0}