:root{--background-dark: #0a0a0a;--background-card: #1a1a1a;--background-gray: #2a2a2a;--text-primary: #ffffff;--text-secondary: #a0a0a0;--primary-color: #00d4ff;--primary-dark: #0099cc;--secondary-color: #00ff88;--accent-color: #ff4757;--border-color: #333333;--shadow-light: 0 4px 12px rgba(0, 0, 0, .3);--shadow-heavy: 0 8px 32px rgba(0, 0, 0, .5);--border-radius-small: 12px;--border-radius-medium: 16px;--border-radius-large: 24px;--transition: all .3s cubic-bezier(.4, 0, .2, 1);font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.6;font-weight:400;color-scheme:dark;color:var(--text-primary);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;padding:0;background:url(/dashboard-bg.gif) no-repeat right -10px bottom -30px fixed;background-size:250px auto;background-blend-mode:lighten;min-height:100vh;width:100%;overflow-x:hidden}#root{min-height:100vh;display:flex;flex-direction:column;width:100%}h1,h2,h3,h4,h5,h6{margin:0;font-weight:700;line-height:1.2;color:var(--text-primary)}h1{font-size:clamp(2rem,5vw,3.5rem);font-weight:800}h2{font-size:clamp(1.5rem,4vw,2.5rem)}h3{font-size:clamp(1.25rem,3vw,2rem)}p{margin:0 0 1rem;color:var(--text-secondary)}a,a:visited,a:hover,a:active,a:focus{text-decoration:none!important}a:hover{color:var(--secondary-color)}button{border-radius:var(--border-radius-small);border:1px solid transparent;padding:.75em 1.5em;font-size:1em;font-weight:600;font-family:inherit;background-color:var(--background-gray);color:var(--text-primary);cursor:pointer;transition:var(--transition);position:relative;overflow:hidden}button:hover{background-color:var(--primary-color);color:var(--background-dark);transform:translateY(-1px);box-shadow:var(--shadow-light)}button:focus,button:focus-visible{outline:2px solid 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no-repeat right -25px bottom -12px fixed;background-size:110px auto}h1{font-size:clamp(1.4rem,3.8vw,2.2rem)}h2{font-size:clamp(1.2rem,2.8vw,1.7rem)}h3{font-size:clamp(.95rem,2.3vw,1.4rem)}}@media (max-width: 375px){body{background:url(/dashboard-bg.gif) no-repeat right -20px bottom -10px fixed;background-size:100px auto}h1{font-size:clamp(1.3rem,3.5vw,2rem)}h2{font-size:clamp(1.1rem,2.8vw,1.6rem)}h3{font-size:clamp(.9rem,2.2vw,1.3rem)}}@media (max-width: 320px){body{background:url(/dashboard-bg.gif) no-repeat right -15px bottom -8px fixed;background-size:80px auto}}.main-nav{background:var(--background-gray);padding:.75rem 1.5rem;box-shadow:0 4px 32px #60b5ff1f;display:flex;justify-content:space-between;align-items:center;position:sticky;top:0;z-index:1000;border-radius:28px;margin:1rem auto;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);max-width:800px;width:90%}.nav-brand{display:flex;align-items:center}.brand-link{text-decoration:none;color:inherit}.nav-brand 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375px){.main-nav{padding:.5rem;width:100%;margin:.5rem}.nav-links{flex-direction:column;gap:.5rem;width:100%}.nav-link{width:100%;text-align:center;padding:.75rem;font-size:.9rem;border-radius:12px}.page-brand{top:.1rem;left:.25rem;padding:.3rem .6rem}.page-brand h1{font-size:.9rem}}@media (max-width: 320px){.main-nav{padding:.5rem;width:100%;margin:.5rem}.nav-links{flex-direction:column;gap:.5rem}.nav-link{width:100%;text-align:center;padding:.5rem}}.dashboard-container{padding:2rem;max-width:1400px;margin:0 auto;min-height:calc(100vh - 80px);display:flex;flex-direction:column;justify-content:flex-start}.dashboard-header{text-align:center;margin-bottom:1.5rem;animation:fadeInUp .8s ease-out}.dashboard-header h1{font-size:2.5rem;font-weight:700;background:linear-gradient(135deg,var(--primary-color),var(--secondary-color));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:1rem;letter-spacing:-.02em}.dashboard-header 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var(--border-color)}@media (max-width: 768px){.hydration-tracker{margin:1rem;padding:2rem;width:98%;max-width:none}.tracker-header h1{font-size:2rem}.add-buttons{grid-template-columns:repeat(2,1fr);gap:1rem}.goal-setter{flex-direction:column}.time-greeting{font-size:1rem}.progress-bar{height:25px}.progress-text{font-size:1rem}}@media (max-width: 480px){.hydration-tracker{padding:1.5rem;margin:.5rem;width:100%}.tracker-header h1{font-size:1.8rem}.add-buttons{grid-template-columns:repeat(2,1fr);gap:.8rem}.add-buttons button{padding:1.2rem}.time-greeting{font-size:.9rem}.progress-bar{height:20px}.progress-text{font-size:.9rem}.chart-container{padding:1.5rem}}@media (max-width: 412px){.hydration-tracker{padding:1.2rem;margin:.3rem;width:100%}.tracker-header h1{font-size:1.7rem}.time-greeting{font-size:.85rem}.add-buttons{grid-template-columns:repeat(2,1fr);gap:.6rem}.add-buttons 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var(--primary-color);outline-offset:2px}.history-list::-webkit-scrollbar{width:6px}.history-list::-webkit-scrollbar-track{background:var(--background-card);border-radius:3px}.history-list::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:3px}.history-list::-webkit-scrollbar-thumb:hover{background:var(--primary-color)}.profile-container{max-width:1400px;margin:0 auto;padding:2rem;min-height:calc(100vh - 80px);display:flex;flex-direction:column;justify-content:flex-start}.profile-header{text-align:center;margin-bottom:3rem;animation:fadeInUp .8s ease-out}.profile-header h1{font-size:2.5rem;font-weight:700;background:linear-gradient(135deg,var(--primary-color),var(--secondary-color));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:1rem;letter-spacing:-.02em}.profile-header p{color:var(--text-secondary);font-size:1.2rem;font-weight:400}.profile-grid{display:flex;flex-direction:column;gap:2rem;width:100%;align-items:center}.profile-card{background:var(--background-card);border-radius:24px;padding:3rem;box-shadow:var(--shadow-heavy);border:1px solid var(--border-color);position:relative;overflow:hidden;min-height:70vh;display:flex;flex-direction:column;justify-content:flex-start}.profile-card:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--primary-color),var(--secondary-color));border-radius:24px 24px 0 0}.profile-card h2{color:var(--text-primary);font-size:2rem;margin-bottom:2rem;font-weight:700;position:relative;border-bottom:none;position:static}.profile-card 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