:root{--primary:#2563eb;--primary-hover:#1d4ed8;--success:#16a34a;--success-hover:#15803d;--danger:#dc2626;--text:#374151;--text-light:#6b7280;--bg:#f9fafb;--card-bg:#fff;--border:#e5e7eb;--sans:system-ui, "Segoe UI", Roboto, sans-serif;--mono:ui-monospace, Consolas, monospace;font:16px/1.5 var(--sans);color:var(--text);background:var(--bg)}*{box-sizing:border-box;margin:0;padding:0}body{min-height:100vh}#root{max-width:480px;margin:0 auto;padding:24px 16px}button{cursor:pointer;font-size:16px;font-family:var(--sans);border:none;border-radius:8px;padding:12px 24px;transition:background .2s}.header{text-align:center;margin-bottom:32px}.header h1{color:var(--text);font-size:24px;font-weight:600}.header .date{color:var(--text-light);margin-top:4px;font-size:14px}.clock{text-align:center;font-size:48px;font-family:var(--mono);color:var(--text);margin-bottom:32px;font-weight:600}.punch-buttons{gap:16px;margin-bottom:32px;display:flex}.punch-buttons button{color:#fff;flex:1;padding:16px;font-size:18px;font-weight:600}.btn-clock-in{background:var(--primary)}.btn-clock-in:hover{background:var(--primary-hover)}.btn-clock-in:disabled{cursor:not-allowed;background:#93c5fd}.btn-clock-out{background:var(--danger)}.btn-clock-out:hover{background:#b91c1c}.btn-clock-out:disabled{cursor:not-allowed;background:#fca5a5}.status-card{background:var(--card-bg);border:1px solid var(--border);border-radius:12px;margin-bottom:24px;padding:20px}.status-card h2{color:var(--text-light);margin-bottom:12px;font-size:14px}.status-row{border-bottom:1px solid var(--border);justify-content:space-between;padding:8px 0;display:flex}.status-row:last-child{border-bottom:none}.status-row .label{color:var(--text-light);font-size:14px}.status-row .value{font-weight:600;font-family:var(--mono)}.status-badge{border-radius:12px;padding:2px 10px;font-size:13px;font-weight:600;display:inline-block}.status-badge.working{color:var(--success);background:#dcfce7}.status-badge.off{color:var(--text-light);background:#f3f4f6}