:root{--primary-color: #10b981;--primary-light: #e6f4ea;--bg-color: #f7fee7;--card-bg: #ffffff;--text-main: #1e293b;--text-muted: #64748b;--radius-lg: 24px;--radius-md: 16px;--shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, .05), 0 2px 4px -1px rgba(0, 0, 0, .03);--shadow-md: 0 10px 15px -3px rgba(0, 0, 0, .05), 0 4px 6px -2px rgba(0, 0, 0, .02)}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background-color:var(--bg-color);color:var(--text-main)}.app-container{max-width:1000px;margin:0 auto;padding:20px;min-height:100vh;display:flex;flex-direction:column;gap:20px}.app-header{background:var(--card-bg);padding:16px 28px;border-radius:var(--radius-lg);display:flex;justify-content:space-between;align-items:center;box-shadow:var(--shadow-md)}.logo-area{display:flex;align-items:center;gap:12px}.logo-icon{font-size:32px}.logo-area h1{margin:0;font-size:20px;font-weight:800;color:#047857}.logo-area p{margin:2px 0 0;font-size:13px;color:var(--text-muted)}.streak-badge{background:#fef3c7;color:#92400e;padding:8px 16px;border-radius:50px;display:flex;align-items:center;gap:8px;font-size:14px;font-weight:600}.tab-navigation{display:flex;background:#f1f5f9;padding:6px;border-radius:var(--radius-md);gap:6px}.tab-btn{flex:1;display:flex;align-items:center;justify-content:center;gap:8px;padding:12px;border:none;background:transparent;border-radius:12px;font-size:15px;font-weight:600;color:var(--text-muted);cursor:pointer;transition:all .2s ease}.tab-btn.active{background:var(--card-bg);color:var(--primary-color);box-shadow:var(--shadow-sm)}.main-content{flex:1}.tab-pane{display:flex;flex-direction:column;gap:20px}.welcome-banner{background:linear-gradient(135deg,#ecfdf5,#d1fae5);padding:28px;border-radius:var(--radius-lg);border:1px solid #a7f3d0}.secure-tag{display:inline-block;background:#10b9811a;color:#047857;padding:4px 12px;border-radius:50px;font-size:12px;font-weight:600;margin-bottom:12px}.welcome-banner h2{margin:0 0 8px;font-size:24px;color:#065f46}.welcome-banner p{margin:0;font-size:15px;color:#047857;line-height:1.6}.guide-selector{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.selector-card{background:var(--card-bg);border:2px solid transparent;border-radius:var(--radius-md);padding:16px;display:flex;align-items:center;gap:14px;cursor:pointer;transition:all .2s ease;box-shadow:var(--shadow-sm)}.selector-card.active{border-color:var(--primary-color);background:var(--primary-light)}.icon-box{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center}.selector-card h4{margin:0;font-size:16px;font-weight:700}.selector-card p{margin:2px 0 0;font-size:12px;color:var(--text-muted)}.guide-details-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.tip-card{background:var(--card-bg);padding:20px;border-radius:var(--radius-md);box-shadow:var(--shadow-sm);border-left:5px solid var(--primary-color)}.tip-card h3{margin:0 0 8px;font-size:16px;color:#0f172a}.tip-card p{margin:0;font-size:14px;color:var(--text-muted);line-height:1.6}.warm-tips-box{background:#fffbeb;border:1px solid #fef3c7;padding:16px;border-radius:var(--radius-md);display:flex;gap:12px;align-items:flex-start}.warm-tips-box p{margin:0;font-size:14px;color:#b45309;line-height:1.5}.grid-layout{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}.card{background:var(--card-bg);padding:24px;border-radius:var(--radius-lg);box-shadow:var(--shadow-md)}.full-width{grid-column:span 2}.card-header{display:flex;align-items:center;gap:8px;margin-bottom:8px}.card-header h3{margin:0;font-size:18px;font-weight:700}.card-desc{margin:0 0 20px;font-size:13px;color:var(--text-muted)}.input-group-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px}.input-field{display:flex;flex-direction:column;gap:6px}.input-field label{font-size:13px;font-weight:600;color:var(--text-muted)}.input-field input{padding:12px;border:1.5px solid #e2e8f0;border-radius:12px;font-size:15px;outline:none;transition:border-color .2s}.input-field input:focus{border-color:var(--primary-color)}.primary-btn{width:100%;padding:12px;background:var(--primary-color);color:#fff;border:none;border-radius:12px;font-size:15px;font-weight:600;cursor:pointer;transition:opacity .2s}.primary-btn:hover{opacity:.9}.bmi-result-box{margin-top:16px;padding:16px;border-radius:var(--radius-md);display:flex;align-items:center;gap:16px}.bmi-num-badge{display:flex;flex-direction:column;align-items:center;justify-content:center;background:#fff;padding:10px;border-radius:12px;min-width:60px;box-shadow:var(--shadow-sm)}.bmi-num-badge span{font-size:10px;color:var(--text-muted)}.bmi-num-badge strong{font-size:20px;font-weight:800}.bmi-text h4{margin:0 0 4px;font-size:16px;font-weight:700}.bmi-text p{margin:0;font-size:13px;line-height:1.4}.tracker-items{display:flex;flex-direction:column;gap:14px;margin-bottom:20px}.tracker-row{display:flex;justify-content:space-between;align-items:center;padding:12px;background:#f8fafc;border-radius:12px}.tracker-label{display:flex;align-items:center;gap:12px}.tracker-label span{font-size:14px;font-weight:600}.tracker-label .sub{margin:2px 0 0;font-size:12px;color:var(--text-muted)}.circle-add-btn{width:32px;height:32px;border-radius:50%;border:1.5px solid #cbd5e1;background:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--text-muted);transition:all .2s}.circle-add-btn:hover{border-color:var(--primary-color);color:var(--primary-color)}.circle-add-btn.completed{background:var(--primary-color);border-color:var(--primary-color);color:#fff}.range-selector input{width:100px;accent-color:var(--primary-color)}.small-input{width:70px;padding:6px;border:1.5px solid #cbd5e1;border-radius:8px;text-align:center;font-size:13px}.styled-checkbox{width:20px;height:20px;accent-color:var(--primary-color);cursor:pointer}.submit-tracker-btn{width:100%;padding:14px;background:#0f172a;color:#fff;border:none;border-radius:12px;font-size:15px;font-weight:600;cursor:pointer}.svg-chart-container{width:100%;height:200px;background:#fafafa;border-radius:var(--radius-md);padding:10px;box-sizing:border-box}.chart-dot-group{transition:transform .2s;cursor:pointer}.chart-dot-group:hover{transform:scale(1.1)}.ai-chat-container{background:var(--card-bg);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow-md);display:flex;flex-direction:column;height:550px}.ai-intro-banner{display:flex;gap:16px;align-items:center;padding-bottom:16px;border-bottom:1px solid #f1f5f9}.avatar-large{font-size:40px}.ai-intro-banner h3{margin:0 0 4px;font-size:18px;color:#0f172a}.ai-intro-banner p{margin:0;font-size:13px;color:var(--text-muted);line-height:1.4}.chat-window{flex:1;overflow-y:auto;padding:16px 0;display:flex;flex-direction:column;gap:16px}.chat-bubble-wrapper{display:flex;gap:12px;max-width:80%}.chat-bubble-wrapper.ai{align-self:flex-start}.chat-bubble-wrapper.user{align-self:flex-end;flex-direction:row-reverse}.chat-avatar{font-size:24px}.chat-bubble{padding:12px 16px;border-radius:16px;font-size:14px;line-height:1.5}.ai .chat-bubble{background:#f1f5f9;color:var(--text-main);border-top-left-radius:4px}.user .chat-bubble{background:var(--primary-color);color:#fff;border-top-right-radius:4px}.chat-bubble.loading{display:flex;gap:4px;align-items:center;padding:12px 20px}.chat-bubble.loading .dot{width:8px;height:8px;background:#94a3b8;border-radius:50%;animation:bounce 1.4s infinite ease-in-out both}.chat-bubble.loading .dot:nth-child(1){animation-delay:-.32s}.chat-bubble.loading .dot:nth-child(2){animation-delay:-.16s}@keyframes bounce{0%,80%,to{transform:scale(0)}40%{transform:scale(1)}}.chat-input-area{display:flex;gap:12px;background:#f8fafc;padding:8px;border-radius:var(--radius-md);border:1.5px solid #e2e8f0}.chat-input-area input{flex:1;border:none;background:transparent;padding:12px;outline:none;font-size:14px}.send-btn{background:var(--primary-color);color:#fff;border:none;border-radius:12px;width:44px;height:44px;display:flex;align-items:center;justify-content:center;cursor:pointer}.send-btn:disabled{opacity:.5}.quick-prompts{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;align-items:center}.quick-prompts .label{font-size:12px;color:var(--text-muted)}.quick-prompts button{background:#f1f5f9;border:none;padding:6px 12px;border-radius:50px;font-size:12px;color:var(--text-main);cursor:pointer;transition:background .2s}.quick-prompts button:hover{background:#e2e8f0}.success-toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%);background:#ecfdf5;border:1.5px solid #10b981;padding:12px 24px;border-radius:50px;box-shadow:var(--shadow-md);display:flex;align-items:center;gap:10px;z-index:100;font-size:14px;color:#047857;font-weight:600}