:root{--color-bg-primary: #1f3a6a;--color-bg-secondary: #172d54;--color-bg-card: #142847;--color-bg-card-hover: #1a3358;--color-bg-elevated: #1e3c66;--color-text-primary: #e8ecf4;--color-text-secondary: #8ea3c4;--color-text-muted: #5a7399;--color-accent: #3b82f6;--color-accent-glow: rgba(59, 130, 246, .25);--color-accent-hover: #60a5fa;--color-risk-low: #10b981;--color-risk-elevated: #f59e0b;--color-risk-high: #f97316;--color-risk-critical: #ef4444;--color-risk-low-bg: rgba(16, 185, 129, .12);--color-risk-elevated-bg: rgba(245, 158, 11, .12);--color-risk-high-bg: rgba(249, 115, 22, .12);--color-risk-critical-bg: rgba(239, 68, 68, .12);--color-ch-turbidity: #06b6d4;--color-ch-uv254: #a855f7;--color-ch-cdom: #22d3ee;--color-ch-tryptophan: #e879f9;--color-ch-scatter: #facc15;--color-border: rgba(255, 255, 255, .08);--color-border-active: rgba(59, 130, 246, .4);--glass-bg: rgba(18, 34, 64, .75);--glass-blur: 16px;--font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-size-xs: .75rem;--font-size-sm: .875rem;--font-size-base: 1rem;--font-size-lg: 1.125rem;--font-size-xl: 1.25rem;--font-size-2xl: 1.5rem;--font-size-3xl: 2rem;--font-size-4xl: 2.5rem;--font-size-hero: 4rem;--space-xs: .25rem;--space-sm: .5rem;--space-md: 1rem;--space-lg: 1.5rem;--space-xl: 2rem;--space-2xl: 3rem;--space-3xl: 4rem;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--radius-xl: 24px;--radius-full: 9999px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .3);--shadow-md: 0 4px 12px rgba(0, 0, 0, .4);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .5);--shadow-glow: 0 0 20px var(--color-accent-glow);--transition-fast: .15s ease;--transition-normal: .25s ease;--transition-slow: .4s ease}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:var(--color-bg-primary)}body{font-family:var(--font-family);background:var(--color-bg-primary);color:var(--color-text-primary);line-height:1.6;min-height:100vh}a{color:var(--color-accent);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-accent-hover)}.app-layout{display:flex;min-height:100vh;background:var(--color-bg-primary)}.app-sidebar{width:260px;background:var(--color-bg-secondary);border-right:1px solid var(--color-border);display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;z-index:100;transition:transform var(--transition-normal)}.app-main{flex:1;margin-left:260px;display:flex;flex-direction:column;min-height:100vh;background:var(--color-bg-primary)}.app-topbar{height:64px;background:var(--glass-bg);backdrop-filter:blur(var(--glass-blur));-webkit-backdrop-filter:blur(var(--glass-blur));border-bottom:1px solid var(--color-border);display:flex;align-items:center;justify-content:space-between;padding:0 var(--space-xl);position:sticky;top:0;z-index:50}.app-content{flex:1;padding:var(--space-xl);max-width:1400px;width:100%;margin:0 auto;background:var(--color-bg-primary)}.card{background:var(--color-bg-card);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--space-lg);transition:all var(--transition-normal)}.card:hover{background:var(--color-bg-card-hover);border-color:var(--color-border-active);box-shadow:var(--shadow-md)}.card-glass{background:var(--glass-bg);backdrop-filter:blur(var(--glass-blur));-webkit-backdrop-filter:blur(var(--glass-blur));border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--space-lg)}.dashboard-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:var(--space-lg)}.dashboard-grid-wide{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-lg)}.risk-score-value{font-size:var(--font-size-hero);font-weight:800;line-height:1;letter-spacing:-2px}.risk-score-value.low{color:var(--color-risk-low)}.risk-score-value.elevated{color:var(--color-risk-elevated)}.risk-score-value.high{color:var(--color-risk-high)}.risk-score-value.critical{color:var(--color-risk-critical)}.badge{display:inline-flex;align-items:center;gap:var(--space-xs);padding:2px 10px;border-radius:var(--radius-full);font-size:var(--font-size-xs);font-weight:600;text-transform:uppercase;letter-spacing:.5px}.badge-low{background:var(--color-risk-low-bg);color:var(--color-risk-low)}.badge-elevated{background:var(--color-risk-elevated-bg);color:var(--color-risk-elevated)}.badge-high{background:var(--color-risk-high-bg);color:var(--color-risk-high)}.badge-critical{background:var(--color-risk-critical-bg);color:var(--color-risk-critical)}.badge-confidence{background:#3b82f61f;color:var(--color-accent)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-sm);padding:10px 20px;border:none;border-radius:var(--radius-md);font-family:var(--font-family);font-size:var(--font-size-sm);font-weight:600;cursor:pointer;transition:all var(--transition-fast)}.btn-primary{background:var(--color-accent);color:#fff}.btn-primary:hover{background:var(--color-accent-hover);box-shadow:var(--shadow-glow)}.btn-ghost{background:transparent;color:var(--color-text-secondary);border:1px solid var(--color-border)}.btn-ghost:hover{background:var(--color-bg-elevated);color:var(--color-text-primary)}.sidebar-brand{padding:var(--space-lg) var(--space-lg);display:flex;align-items:center;gap:var(--space-sm);border-bottom:1px solid var(--color-border)}.sidebar-brand h1{font-size:var(--font-size-xl);font-weight:700;background:linear-gradient(135deg,#3b82f6,#06b6d4);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.sidebar-brand .brand-dot{width:8px;height:8px;border-radius:50%;background:var(--color-risk-low);animation:pulse-dot 2s ease-in-out infinite}@keyframes pulse-dot{0%,to{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(1.3)}}.sidebar-nav{flex:1;padding:var(--space-md) 0;display:flex;flex-direction:column;gap:2px}.sidebar-link{display:flex;align-items:center;gap:var(--space-sm);padding:10px var(--space-lg);color:var(--color-text-secondary);font-size:var(--font-size-sm);font-weight:500;border-radius:0;transition:all var(--transition-fast);position:relative}.sidebar-link:hover{color:var(--color-text-primary);background:#ffffff0a}.sidebar-link.active{color:var(--color-accent);background:#3b82f614}.sidebar-link.active:before{content:"";position:absolute;left:0;top:4px;bottom:4px;width:3px;border-radius:0 3px 3px 0;background:var(--color-accent)}.sidebar-link svg{width:18px;height:18px;flex-shrink:0}.input-field{width:100%;padding:10px 14px;background:var(--color-bg-primary);border:1px solid var(--color-border);border-radius:var(--radius-md);color:var(--color-text-primary);font-family:var(--font-family);font-size:var(--font-size-sm);transition:border-color var(--transition-fast)}.input-field:focus{outline:none;border-color:var(--color-accent);box-shadow:0 0 0 3px var(--color-accent-glow)}.stat-label{font-size:var(--font-size-xs);color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.5px;font-weight:600}.stat-value{font-size:var(--font-size-2xl);font-weight:700;color:var(--color-text-primary)}.event-card{display:flex;gap:var(--space-md);padding:var(--space-md);border-left:3px solid var(--color-border);transition:all var(--transition-fast)}.event-card:hover{background:#ffffff05}.event-card.severity-critical{border-left-color:var(--color-risk-critical)}.event-card.severity-high{border-left-color:var(--color-risk-high)}.event-card.severity-elevated{border-left-color:var(--color-risk-elevated)}.event-card.severity-low{border-left-color:var(--color-risk-low)}.health-flag{display:inline-flex;align-items:center;gap:var(--space-xs);padding:4px 10px;background:#ef44441a;border:1px solid rgba(239,68,68,.2);border-radius:var(--radius-sm);font-size:var(--font-size-xs);color:#fca5a5}.health-flag.warning{background:#f59e0b1a;border-color:#f59e0b33;color:#fcd34d}@keyframes fade-in{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes slide-in-left{0%{opacity:0;transform:translate(-16px)}to{opacity:1;transform:translate(0)}}@keyframes scale-in{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}.animate-fade-in{animation:fade-in .4s ease forwards}.animate-slide-in{animation:slide-in-left .3s ease forwards}.animate-scale-in{animation:scale-in .3s ease forwards}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#ffffff1a;border-radius:3px}::-webkit-scrollbar-thumb:hover{background:#fff3}@media(max-width:1024px){.app-sidebar{transform:translate(-100%)}.app-sidebar.open{transform:translate(0)}.app-main{margin-left:0}.dashboard-grid-wide{grid-template-columns:1fr}}@media(max-width:640px){.app-content{padding:var(--space-md)}.risk-score-value{font-size:var(--font-size-3xl)}.dashboard-grid{grid-template-columns:1fr}}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-between{justify-content:space-between}.gap-sm{gap:var(--space-sm)}.gap-md{gap:var(--space-md)}.gap-lg{gap:var(--space-lg)}.text-secondary{color:var(--color-text-secondary)}.text-muted{color:var(--color-text-muted)}.text-sm{font-size:var(--font-size-sm)}.text-xs{font-size:var(--font-size-xs)}.font-semibold{font-weight:600}.font-bold{font-weight:700}.mt-md{margin-top:var(--space-md)}.mt-lg{margin-top:var(--space-lg)}.mb-md{margin-bottom:var(--space-md)}.mb-lg{margin-bottom:var(--space-lg)}.page-header{margin-bottom:var(--space-xl)}.page-header h2{font-size:var(--font-size-2xl);font-weight:700}.page-header p{color:var(--color-text-secondary);font-size:var(--font-size-sm);margin-top:var(--space-xs)}.spinner{width:32px;height:32px;border:3px solid var(--color-border);border-top-color:var(--color-accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.loading-container{display:flex;align-items:center;justify-content:center;min-height:300px}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#172d54,#1f3a6a,#172d54)}.login-card{width:100%;max-width:420px;padding:var(--space-2xl)}.login-card h1{font-size:var(--font-size-2xl);text-align:center;margin-bottom:var(--space-xl);background:linear-gradient(135deg,#3b82f6,#06b6d4);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.login-card .form-group{margin-bottom:var(--space-md)}.login-card label{display:block;font-size:var(--font-size-sm);color:var(--color-text-secondary);margin-bottom:var(--space-xs)}