:root{color-scheme:light dark;font-family:system-ui,-apple-system,Segoe UI,sans-serif;--bg: #f5f6f8;--surface: #ffffff;--text: #1a1d23;--muted: #667085;--border: #e2e5ea;--accent: #4f7cff;--accent-contrast: #ffffff;--danger: #d1453b}@media (prefers-color-scheme: dark){:root{--bg: #14161a;--surface: #1d2026;--text: #eceef1;--muted: #9aa1ac;--border: #2c3038}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text)}.app-shell{min-height:100vh;display:flex;flex-direction:column}.topbar{display:flex;align-items:center;gap:24px;padding:12px 24px;background:var(--surface);border-bottom:1px solid var(--border)}.topbar .brand{font-weight:700;text-decoration:none;color:var(--text)}.topbar nav{display:flex;gap:16px;flex:1}.topbar nav a{color:var(--muted);text-decoration:none}.topbar nav a:hover{color:var(--text)}.topbar-user{display:flex;align-items:center;gap:12px;color:var(--muted)}.content{flex:1;width:100%;max-width:720px;margin:0 auto;padding:24px 16px 64px}h1{margin-top:0}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center}.auth-form{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:32px;width:320px;display:flex;flex-direction:column;gap:12px}.auth-form label{display:flex;flex-direction:column;gap:4px;font-size:14px;color:var(--muted)}input,select,button{font:inherit}input,select{padding:8px 10px;border-radius:8px;border:1px solid var(--border);background:var(--bg);color:var(--text)}button{padding:8px 14px;border-radius:8px;border:1px solid var(--border);background:var(--surface);color:var(--text);cursor:pointer}button.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-contrast)}button.link-button{border:none;background:none;padding:0;color:var(--accent);text-decoration:underline}.error{color:var(--danger)}.inline-form{display:flex;gap:8px;margin-bottom:20px;flex-wrap:wrap}.card-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}.card{background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:14px 16px}.card a{color:inherit;text-decoration:none}.badge{margin-left:8px;font-size:12px;color:var(--muted);border:1px solid var(--border);border-radius:6px;padding:1px 6px}.plan-item-row,.session-item-row{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:8px}.plan-item label,.session-item label{display:flex;flex-direction:column;gap:4px;font-size:13px;color:var(--muted)}.session-item-row{font-size:16px}.card.session-item.done{opacity:.6}.chart-wrap{margin-top:12px}.target-line{color:var(--muted);font-size:13px;margin:0 0 8px}