:root{--color-primary: #0b3a5b;--color-primary-dark: #07263c;--color-accent: #1f7a8c;--color-bg: #f5f7fa;--color-surface: #ffffff;--color-border: #d6dce4;--color-text: #1a2230;--color-text-muted: #5c6776;--color-rag-green: #2e7d32;--color-rag-amber: #ed8a0a;--color-rag-red: #c62828;--shadow-sm: 0 1px 2px rgba(15, 28, 49, .06);--shadow-md: 0 4px 12px rgba(15, 28, 49, .08);--radius: 6px;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif}*{box-sizing:border-box}html,body,#root{height:100%;margin:0;font-family:var(--font-sans);background:var(--color-bg);color:var(--color-text)}a{color:var(--color-accent);text-decoration:none}a:hover{text-decoration:underline}button{font-family:inherit;font-size:14px;padding:8px 16px;border-radius:var(--radius);border:1px solid var(--color-border);background:var(--color-surface);color:var(--color-text);cursor:pointer}button.primary{background:var(--color-primary);color:#fff;border-color:var(--color-primary)}button.primary:hover{background:var(--color-primary-dark)}.app-shell{display:grid;grid-template-rows:56px 1fr;grid-template-columns:240px 1fr;grid-template-areas:"header header" "sidebar main";height:100vh}.app-header{grid-area:header;background:var(--color-primary);color:#fff;display:flex;align-items:center;justify-content:space-between;padding:0 24px;box-shadow:var(--shadow-sm)}.app-header .brand{font-weight:600;letter-spacing:.5px}.app-header .user-pill{font-size:13px;opacity:.9;display:flex;align-items:center;gap:12px}.app-header .header-right{display:flex;align-items:center;gap:16px}.app-header .stale-pill{background:var(--color-rag-amber);color:#fff;font-size:12px;font-weight:600;padding:4px 10px;border-radius:999px;letter-spacing:.3px;cursor:help}.app-sidebar{grid-area:sidebar;background:var(--color-surface);border-right:1px solid var(--color-border);padding:16px 0;overflow-y:auto}.app-sidebar a{display:block;padding:10px 24px;color:var(--color-text);font-size:14px}.app-sidebar a.active{background:#0b3a5b14;color:var(--color-primary);font-weight:600;border-left:3px solid var(--color-primary);padding-left:21px}.app-main{grid-area:main;padding:32px;overflow-y:auto}.login-screen{display:flex;align-items:center;justify-content:center;height:100vh;flex-direction:column;gap:24px}.login-card{background:var(--color-surface);padding:48px;border-radius:var(--radius);box-shadow:var(--shadow-md);text-align:center;max-width:400px}.login-card h1{margin:0 0 8px;color:var(--color-primary)}.login-card p{color:var(--color-text-muted);margin:0 0 24px}