:root{--bg: #1f1d31;--card: #39364f;--accent: #633efa;--accent-soft: #9b7bff;--success: #4ade80;--warning: #fbbf24;--danger: #f87171;--text-primary: #ffffff;--text-secondary: rgba(255, 255, 255, .65);--text-muted: rgba(255, 255, 255, .4);--card-border: rgba(255, 255, 255, .08);--card-radius: 16px;--content-padding: clamp(16px, 3vw, 24px);--sidebar-width: 220px;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;color:var(--text-primary);background:var(--bg)}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:var(--bg)}a{color:var(--accent-soft)}button{font:inherit}.app-shell{min-height:100vh;display:grid;grid-template-columns:1fr}@media(min-width:1024px){.app-shell{grid-template-columns:var(--sidebar-width) 1fr}}.sidebar{display:none;flex-direction:column;gap:8px;padding:24px 16px;border-right:1px solid var(--card-border);background:#00000026;min-height:100vh}.sidebar-sign-out{margin-top:auto}@media(min-width:1024px){.sidebar{display:flex}}.bottom-nav{position:fixed;bottom:0;left:0;right:0;display:grid;grid-template-columns:repeat(3,1fr);gap:4px;padding:8px 12px calc(8px + env(safe-area-inset-bottom));background:#1f1d31f5;border-top:1px solid var(--card-border);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);z-index:20}@media(min-width:1024px){.bottom-nav,.mobile-sign-out{display:none}}.mobile-sign-out{position:fixed;bottom:calc(56px + env(safe-area-inset-bottom));left:0;right:0;padding:8px var(--content-padding);z-index:19}.mobile-sign-out .btn{width:100%}.main-content{padding:var(--content-padding);padding-bottom:calc(120px + var(--content-padding))}@media(min-width:1024px){.main-content{padding-bottom:var(--content-padding)}}.nav-link{display:flex;align-items:center;gap:10px;padding:12px 14px;border-radius:12px;color:var(--text-secondary);text-decoration:none;border:none;background:transparent;cursor:pointer;width:100%;text-align:left}.nav-link.active,.bottom-nav .nav-link.active{background:#633efa33;color:var(--text-primary)}.dashboard-card{background:var(--card);border:1px solid var(--card-border);border-radius:var(--card-radius);padding:20px}.dashboard-card h2,.dashboard-card h3{margin:0 0 16px;font-size:1rem}.metric-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:12px}.metric-tile{background:#00000026;border-radius:12px;padding:14px}.metric-tile .label{font-size:.75rem;color:var(--text-secondary)}.metric-tile .value{font-size:clamp(1.1rem,2.5vw,1.5rem);font-weight:600;margin-top:6px}.status-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 12px;border-radius:999px;background:#ffffff0f;font-size:.85rem}.status-dot{width:8px;height:8px;border-radius:50%}.btn{border:none;border-radius:12px;padding:12px 16px;cursor:pointer;font-weight:600}.btn-accent{background:var(--accent);color:#fff}.btn-secondary{background:#ffffff14;color:var(--text-primary)}.btn:disabled{opacity:.5;cursor:not-allowed}.hero-glucose{display:flex;flex-wrap:wrap;align-items:flex-end;gap:16px}.hero-glucose .value{font-size:clamp(2.5rem,8vw,4rem);font-weight:700;line-height:1}.hero-glucose .in-range{color:var(--success)}.hero-glucose .low,.hero-glucose .high{color:var(--danger)}.hero-glucose .warn{color:var(--warning)}.dashboard-grid,.dashboard-split{display:grid;gap:20px}@media(min-width:900px){.dashboard-split{grid-template-columns:1fr minmax(280px,360px)}}.error-banner{background:#f8717126;border:1px solid rgba(248,113,113,.35);color:#fecaca;padding:12px 16px;border-radius:12px}.live-indicator{display:inline-flex;align-items:center;gap:8px;color:var(--success);font-size:.85rem}.live-indicator .pulse{width:8px;height:8px;border-radius:50%;background:var(--success);animation:pulse 1.5s ease-in-out infinite}@media(prefers-reduced-motion:reduce){.live-indicator .pulse{animation:none}}@keyframes pulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(.85)}}.timeline{display:flex;flex-direction:column;gap:12px;max-height:420px;overflow-y:auto}.timeline-item{display:flex;gap:12px;align-items:flex-start}.timeline-icon{width:32px;height:32px;border-radius:8px;display:grid;place-items:center;background:#633efa33;flex-shrink:0}.btn-secondary.active{background:var(--accent);border-color:var(--accent);color:#fff}.auth-mode-toggle{display:grid;grid-template-columns:1fr 1fr;gap:8px}.auth-mode-toggle .btn{width:100%}.form-field{display:flex;flex-direction:column;gap:6px;margin-bottom:16px}.form-field input,.form-field textarea,.form-field select{background:#0003;border:1px solid var(--card-border);border-radius:10px;padding:12px;color:var(--text-primary)}.security-notice{margin-top:12px;padding:12px 14px;border-radius:10px;border:1px solid rgba(251,191,36,.35);background:#fbbf241a;color:var(--text-secondary);font-size:.9rem;line-height:1.45}.page-header{display:flex;flex-wrap:wrap;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:20px}.page-header h1{margin:0;font-size:clamp(1.25rem,3vw,1.75rem)}.muted{color:var(--text-muted)}.brand{font-weight:700;font-size:1.1rem;margin-bottom:24px;color:var(--accent-soft)}