:root{--brand-turquoise: #25EFC8;--brand-blue: #4D57FC;--color-primary: #16b9a7;--color-primary-hover: #14a596;--color-primary-light: #d9fffb;--color-primary-bg: #d5eeeb;--color-primary-alpha: rgba(22, 185, 167, .28);--color-success: #16b9a7;--color-error: #da0707;--color-error-light: #fee2e2;--color-warning: #f5a623;--color-warning-light: #fef3c7;--color-chart-normal: #7560ef;--color-chart-accent: #16b9a7;--color-chart-critical: #05322d;--color-chart-hypo: #da0707;--color-chart-grid: #d6dedd;--color-text-primary: #333737;--color-text-secondary: #7f8786;--color-text-muted: #b9c0bf;--color-text-inverse: #ffffff;--color-text-on-dark: #e1f7f4;--color-bg-page: #fafafa;--color-bg-card: #ffffff;--color-bg-input: #f0f4f4;--color-bg-hover: #f5f5f5;--color-border: #e3e3e3;--color-border-light: #d6dedd;--color-border-focus: #16b9a7;--font-brand: "Nexa Bold", -apple-system, BlinkMacSystemFont, sans-serif;--font-primary: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--font-mono: "SF Mono", "Fira Code", Consolas, monospace;--text-xs: .75rem;--text-sm: .875rem;--text-base: 1rem;--text-lg: 1.25rem;--text-xl: 1.5rem;--text-2xl: 2rem;--text-3xl: 2.5rem;--text-4xl: 3rem;--leading-none: 1;--leading-tight: 1.25;--leading-normal: 1.5;--leading-relaxed: 1.625;--tracking-tight: -.025em;--tracking-normal: 0;--tracking-wide: .05em;--tracking-wider: .063em;--tracking-widest: .083em;--font-normal: 400;--font-medium: 500;--font-semibold: 600;--font-bold: 700;--space-0: 0;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-8: 2rem;--space-10: 2.5rem;--space-12: 3rem;--space-16: 4rem;--radius-none: 0;--radius-sm: .625rem;--radius-md: .875rem;--radius-lg: 1.3125rem;--radius-xl: 1.5rem;--radius-full: 9999px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-card: 0 2px 24px rgba(0, 0, 0, .039);--shadow-navbar: 0 2px 24px rgba(0, 0, 0, .122);--shadow-dropdown: 0 4px 16px rgba(0, 0, 0, .1);--shadow-modal: 0 8px 32px rgba(0, 0, 0, .15);--transition-fast: .15s ease;--transition-normal: .2s ease;--transition-slow: .3s ease;--z-dropdown: 100;--z-sticky: 200;--z-navbar: 300;--z-modal-backdrop: 400;--z-modal: 500;--z-toast: 600;--z-tooltip: 700}*,*:before,*:after{box-sizing:border-box}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{margin:0;padding:0;font-family:var(--font-primary);font-size:var(--text-base);line-height:var(--leading-normal);color:var(--color-text-primary);background-color:var(--color-bg-page)}#app{display:flex;flex-direction:column;min-height:100vh}header{background:var(--color-bg-card);padding:var(--space-4) var(--space-6);display:flex;justify-content:space-between;align-items:center;box-shadow:var(--shadow-navbar);position:sticky;top:0;z-index:var(--z-navbar)}.logo{display:flex;align-items:center;gap:var(--space-3)}.logo h1{font-size:var(--text-xl);font-weight:var(--font-bold);margin:0;background:linear-gradient(135deg,var(--brand-turquoise),var(--brand-blue));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}nav{display:flex;align-items:center;gap:var(--space-4)}#user-name{font-weight:var(--font-medium);color:var(--color-text-primary)}main{flex:1;padding:var(--space-6);max-width:1400px;margin:0 auto;width:100%}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);padding:var(--space-3) var(--space-6);font-family:var(--font-primary);font-size:var(--text-xs);font-weight:var(--font-medium);letter-spacing:var(--tracking-widest);text-transform:uppercase;text-decoration:none;border:none;border-radius:var(--radius-full);cursor:pointer;transition:all var(--transition-normal)}.btn-primary{background-color:var(--color-primary);color:var(--color-text-inverse)}.btn-primary:hover{background-color:var(--color-primary-hover);transform:translateY(-1px)}.btn-primary:disabled{background-color:var(--color-text-muted);cursor:not-allowed;transform:none}.btn-secondary{background-color:transparent;color:var(--color-primary);border:2px solid var(--color-primary)}.btn-secondary:hover{background-color:var(--color-primary-light)}.btn-large{padding:var(--space-4) var(--space-8);font-size:var(--text-sm)}.card{background:var(--color-bg-card);border-radius:var(--radius-md);padding:var(--space-6);box-shadow:var(--shadow-card)}#login-section{max-width:500px;margin:var(--space-16) auto;text-align:center}#login-section h2{font-size:var(--text-2xl);font-weight:var(--font-bold);color:var(--color-text-primary);margin-bottom:var(--space-2)}#login-section p{color:var(--color-text-secondary);margin-bottom:var(--space-8)}.demo-info{margin-top:var(--space-8);padding:var(--space-4);background:var(--color-primary-light);border-radius:var(--radius-md);border-left:4px solid var(--color-primary);text-align:left}.demo-info p{margin:0 0 var(--space-2) 0;color:var(--color-text-primary)}.demo-info code{display:block;font-family:var(--font-mono);color:var(--color-primary);font-size:var(--text-sm)}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:var(--space-6)}.glucose-card{text-align:center;background:linear-gradient(135deg,var(--color-bg-card) 0%,var(--color-primary-light) 100%)}.glucose-card h3{font-size:var(--text-sm);font-weight:var(--font-medium);letter-spacing:var(--tracking-wider);color:var(--color-text-secondary);text-transform:uppercase;margin:0 0 var(--space-4) 0}.glucose-value{font-size:var(--text-4xl);font-weight:var(--font-bold);letter-spacing:var(--tracking-tight);color:var(--color-chart-normal);line-height:var(--leading-none);margin:var(--space-4) 0}.glucose-value.low{color:var(--color-warning)}.glucose-value.very-low{color:var(--color-error)}.glucose-value.high{color:var(--color-warning)}.glucose-value.very-high{color:var(--color-error)}.glucose-value.in-range{color:var(--color-primary)}.glucose-unit{font-size:var(--text-sm);letter-spacing:var(--tracking-widest);color:var(--color-text-muted);text-transform:uppercase}.glucose-time{margin-top:var(--space-4);font-size:var(--text-sm);color:var(--color-text-secondary)}.glucose-trend{font-size:var(--text-2xl);margin-top:var(--space-2)}.stats-card h3{font-size:var(--text-sm);font-weight:var(--font-medium);letter-spacing:var(--tracking-wider);color:var(--color-text-secondary);text-transform:uppercase;margin:0 0 var(--space-4) 0}.stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--space-4)}.stat{text-align:center;padding:var(--space-4);background:var(--color-bg-input);border-radius:var(--radius-md)}.stat-value{display:block;font-size:var(--text-xl);font-weight:var(--font-semibold);color:var(--color-chart-normal)}.stat-label{font-size:var(--text-xs);letter-spacing:var(--tracking-widest);color:var(--color-text-secondary);text-transform:uppercase;margin-top:var(--space-1)}.chart-card{grid-column:span 2}.chart-card h3{font-size:var(--text-sm);font-weight:var(--font-medium);letter-spacing:var(--tracking-wider);color:var(--color-text-secondary);text-transform:uppercase;margin:0 0 var(--space-4) 0}.chart-container{height:300px;position:relative}#chart-canvas{width:100%;height:100%}.status-card h3{font-size:var(--text-sm);font-weight:var(--font-medium);letter-spacing:var(--tracking-wider);color:var(--color-text-secondary);text-transform:uppercase;margin:0 0 var(--space-4) 0}.status-item{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-3) 0;border-bottom:1px solid var(--color-border-light)}.status-item:last-of-type{border-bottom:none}.status-dot{width:12px;height:12px;border-radius:var(--radius-full);background:var(--color-text-muted);flex-shrink:0}.status-dot.connected{background:var(--color-success)}.status-dot.disconnected{background:var(--color-error)}.status-dot.connecting{background:var(--color-warning);animation:pulse 1s infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.connection-log{margin-top:var(--space-4);max-height:150px;overflow-y:auto;font-family:var(--font-mono);font-size:var(--text-xs);background:var(--color-chart-critical);color:var(--color-text-on-dark);padding:var(--space-3);border-radius:var(--radius-sm)}.connection-log .log-entry{margin-bottom:var(--space-1)}.connection-log .log-time{color:var(--color-primary)}.connection-log .log-error{color:var(--color-error)}.connection-log .log-success{color:var(--brand-turquoise)}.range-bar{display:flex;height:8px;border-radius:var(--radius-full);overflow:hidden;margin-bottom:var(--space-2)}.range-low{background:var(--color-warning)}.range-target{background:var(--color-primary)}.range-high{background:var(--color-error)}.range-labels{display:flex;justify-content:space-between;font-size:var(--text-xs);color:var(--color-text-muted)}footer{text-align:center;padding:var(--space-6);color:var(--color-text-secondary);font-size:var(--text-sm)}@media (max-width: 768px){header{flex-direction:column;gap:var(--space-4);padding:var(--space-4)}main{padding:var(--space-4)}.chart-card{grid-column:span 1}.glucose-value{font-size:var(--text-3xl)}.stats-grid{grid-template-columns:repeat(2,1fr)}}.text-primary{color:var(--color-text-primary)}.text-secondary{color:var(--color-text-secondary)}.text-muted{color:var(--color-text-muted)}.text-accent{color:var(--color-primary)}.text-error{color:var(--color-error)}.bg-page{background-color:var(--color-bg-page)}.bg-card{background-color:var(--color-bg-card)}.bg-primary{background-color:var(--color-primary)}.bg-primary-light{background-color:var(--color-primary-light)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}