:root{--bg: #0f1115;--card: #1b1f27;--border: #2c323d;--text: #e8ebf0;--muted: #9aa4b2;--accent: #3b82f6;--danger: #ef4444;--warn: #f59e0b;--radius: 10px}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);-webkit-text-size-adjust:100%}.app-header{position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:center;padding:10px 12px;background:var(--card);border-bottom:1px solid var(--border)}.header-center{display:flex;flex-direction:column;align-items:center;gap:6px}.title{font-weight:600;font-size:15px;text-align:center}.date-bar{display:flex;align-items:center;gap:6px}.date-display{font-variant-numeric:tabular-nums;min-width:104px;text-align:center}.icon-btn{width:34px;height:34px;border-radius:var(--radius);border:1px solid var(--border);background:var(--bg);color:var(--text);font-size:20px;line-height:1;cursor:pointer}.text-btn{background:none;border:none;color:var(--muted);cursor:pointer;font-size:14px}.text-btn.danger{color:var(--danger)}.logout{position:absolute;right:12px;top:12px}.rows{padding:12px;display:flex;flex-direction:column;gap:12px}.row-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:12px;display:flex;flex-direction:column;gap:10px}.row-head{display:flex;align-items:center;justify-content:space-between}.row-num{color:var(--muted);font-size:13px}label{display:flex;flex-direction:column;gap:4px;font-size:12px;color:var(--muted)}input,select,textarea{width:100%;padding:10px;font-size:16px;font-family:inherit;line-height:1.3;color:var(--text);background:var(--bg);border:1px solid var(--border);border-radius:8px}input:focus,select:focus,textarea:focus{outline:2px solid var(--accent);outline-offset:-1px}textarea.autogrow{display:block;resize:none;overflow:hidden;white-space:pre-wrap;word-break:break-word}.distance-line{display:flex;gap:8px;align-items:flex-end}.distance-line .grow{flex:1}.calc{white-space:nowrap}.calc.needs-calc{background:var(--warn);border-color:var(--warn);color:#1b1f27;font-weight:600;animation:needs-calc-pulse 1.6s ease-in-out infinite}input.stale{border-color:var(--warn)}@keyframes needs-calc-pulse{0%,to{box-shadow:0 0 #f59e0b8c}50%{box-shadow:0 0 0 5px #f59e0b00}}@media (prefers-reduced-motion: reduce){.calc.needs-calc{animation:none}}.actions{position:sticky;bottom:0;display:flex;gap:10px;padding:12px;background:linear-gradient(to top,var(--bg) 60%,transparent)}.primary-btn,.secondary-btn{padding:12px 16px;font-size:15px;border-radius:var(--radius);cursor:pointer;border:1px solid var(--border)}.primary-btn{background:var(--accent);border-color:var(--accent);color:#fff;flex:1}.secondary-btn{background:var(--card);color:var(--text)}.secondary-btn:disabled{opacity:.45;cursor:not-allowed}#add-row{flex:1}.login-body{display:flex;min-height:100vh;align-items:center;justify-content:center;padding:16px}.login-card{width:100%;max-width:340px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;display:flex;flex-direction:column;gap:14px}.login-card h1{margin:0 0 4px;font-size:20px}.error{color:var(--danger);font-size:13px;margin:0}