*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg-primary: #f5f5f7;--bg-secondary: #ffffff;--bg-card: #ffffff;--bg-card-hover: #fafafa;--bg-elevated: #ffffff;--text-primary: #1d1d1f;--text-secondary: #6e6e73;--text-tertiary: #aeaeb2;--border: rgba(0, 0, 0, .06);--border-strong: rgba(0, 0, 0, .1);--shadow-sm: 0 1px 2px rgba(0, 0, 0, .04);--shadow-md: 0 2px 8px rgba(0, 0, 0, .06), 0 1px 2px rgba(0, 0, 0, .04);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .08), 0 2px 8px rgba(0, 0, 0, .04);--red: #ff3b30;--red-soft: rgba(255, 59, 48, .12);--green: #34c759;--green-soft: rgba(52, 199, 89, .12);--blue: #007aff;--blue-soft: rgba(0, 122, 255, .12);--orange: #ff9500;--orange-soft: rgba(255, 149, 0, .12);--purple: #af52de;--purple-soft: rgba(175, 82, 222, .12);--yellow: #ffcc00;--yellow-soft: rgba(255, 204, 0, .12);--cyan: #5ac8fa;--cyan-soft: rgba(90, 200, 250, .12);--teal: #64d2ff;--pink: #ff2d55;--glow-red: 0 0 16px rgba(255, 59, 48, .3);--glow-green: 0 0 16px rgba(52, 199, 89, 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var(--space-lg);height:56px;display:flex;align-items:center;justify-content:space-between}.header__left{flex:1}.header__title{font-size:1.15rem;font-weight:700;color:var(--text-primary);letter-spacing:-.01em}.header__tabs{display:flex;gap:4px;background:var(--bg-primary);padding:3px;border-radius:var(--radius-md);border:1px solid var(--border)}.header__tab{padding:6px 18px;border:none;background:none;border-radius:var(--radius-sm);font-size:.8rem;font-weight:500;color:var(--text-secondary);cursor:pointer;transition:all .2s ease;font-family:var(--font-sans)}.header__tab:hover{color:var(--text-primary)}.header__tab--active{background:var(--bg-card);color:var(--text-primary);box-shadow:var(--shadow-sm);font-weight:600}.header__right{flex:1;display:flex;justify-content:flex-end}.header__theme-toggle{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border:1px solid 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var(--border)}.stat-card__value{display:flex;align-items:center;gap:8px;font-size:1.5rem;font-weight:700;color:var(--text-primary)}.stat-card__dot{width:10px;height:10px;border-radius:50%;flex-shrink:0}.stat-card__unit{font-size:.85rem;font-weight:500;color:var(--text-tertiary);font-family:var(--font-sans)}.stat-card__label{font-size:.75rem;font-weight:500;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.04em}.month{display:flex;flex-direction:column;gap:var(--space-md)}.month__averages{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--space-md)}.month__chart{margin-top:var(--space-sm)}.month__placeholder{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--space-2xl) var(--space-lg);text-align:center}.month__placeholder-text{font-size:.9rem;font-weight:500;color:var(--text-secondary)}.month__placeholder-sub{font-size:.78rem;color:var(--text-tertiary);margin-top:6px}@media(max-width:768px){.month__averages{grid-template-columns:1fr 1fr}}@media(max-width:480px){.month__averages{grid-template-columns:1fr}}.app{min-height:100vh;display:flex;flex-direction:column}.app__main{max-width:1200px;width:100%;margin:0 auto;padding:var(--space-lg);flex:1}@media(max-width:600px){.app__main{padding:var(--space-md)}}