:root{--bg: #f8f9fa;--paper: #ffffff;--border: #dadce0;--text: #202124;--muted: #5f6368;--primary: #1a73e8;--primary-dark: #1557b0;--green: #1e8e3e;--green-bg: #e6f4ea;--red: #d93025;--red-bg: #fce8e6}*{box-sizing:border-box}body{margin:0;font-family:Inter,Roboto,Helvetica Neue,Arial,sans-serif;background:var(--bg);color:var(--text)}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}.container{max-width:1200px;margin:0 auto;padding:24px 20px 64px}.page-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;gap:12px;flex-wrap:wrap}h1{font-size:1.75rem;font-weight:700;margin:0}h2{font-size:1.25rem;font-weight:600;margin:0 0 12px}.nav{display:flex;justify-content:space-between;align-items:center;padding:12px 20px;background:var(--paper);border-bottom:1px solid var(--border)}.nav-left,.nav-right{display:flex;align-items:center;gap:18px}.nav-brand{font-weight:700;color:var(--text)}.nav-link{color:var(--muted);font-weight:500}.nav-user{color:var(--muted);font-size:.9rem;display:flex;align-items:center;gap:8px}.btn{border:1px solid transparent;border-radius:8px;padding:8px 14px;font-weight:600;font-size:.875rem;cursor:pointer;font-family:inherit}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark)}.btn-ghost{background:transparent;color:var(--muted);border-color:var(--border)}.btn-ghost:hover{background:#f1f3f4}.btn-danger{background:transparent;color:var(--red);border-color:var(--border)}.btn-danger:hover{background:var(--red-bg)}.btn-sm{padding:4px 10px;font-size:.8rem}.btn:disabled{opacity:.5;cursor:not-allowed}.badge{background:var(--primary);color:#fff;border-radius:6px;padding:1px 7px;font-size:.7rem;font-weight:700}.badge-green{background:var(--green-bg);color:var(--green)}.badge-muted{background:#f1f3f4;color:var(--muted)}.card{background:var(--paper);border:1px solid var(--border);border-radius:12px;padding:20px;margin-bottom:16px}.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}.airplane-card{cursor:pointer;transition:box-shadow .2s ease}.airplane-card:hover{box-shadow:0 1px 3px #3c40434d,0 4px 8px 3px #3c404326}.airplane-card h3{margin:0 0 4px;font-size:1.1rem}.airplane-card .muted{color:var(--muted);font-size:.875rem}.table-wrap{overflow-x:auto;background:var(--paper);border:1px solid var(--border);border-radius:12px}table{width:100%;border-collapse:collapse;font-size:.875rem}thead th{text-align:left;padding:12px 14px;background:var(--bg);color:var(--muted);font-size:.72rem;font-weight:600;letter-spacing:.05em;text-transform:uppercase;border-bottom:2px solid var(--border);white-space:nowrap}tbody td{padding:10px 14px;border-bottom:1px solid #f1f3f5;color:var(--text);white-space:nowrap}tbody tr:hover{background:var(--bg)}.diff-pos{color:var(--green);font-weight:700}.diff-neg{color:var(--red);font-weight:700}input,select{width:100%;padding:8px 10px;border:1px solid var(--border);border-radius:8px;font-family:inherit;font-size:.875rem;background:#fff}input:focus,select:focus{outline:none;border-color:var(--primary)}.table-input{padding:6px 8px;min-width:80px}.form-row{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}.form-row label{font-size:.8rem;font-weight:600;color:var(--muted)}.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:14px}.checklist{display:flex;flex-direction:column;gap:8px;border:1px solid var(--border);border-radius:8px;padding:10px 12px;max-height:200px;overflow-y:auto}.checklist-item{display:flex;align-items:center;gap:8px;font-size:.9rem;font-weight:500;color:var(--text);cursor:pointer}.checklist-item input{width:auto;margin:0}.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}.login-box{width:100%;max-width:380px;background:var(--paper);border:1px solid var(--border);border-radius:16px;padding:32px}.login-box h1{text-align:center;margin-bottom:24px}.error{color:var(--red);background:var(--red-bg);border-radius:8px;padding:10px 12px;margin-bottom:14px;font-size:.875rem}.empty{color:var(--muted);padding:24px;text-align:center}.actions{display:flex;gap:6px}.modal-backdrop{position:fixed;inset:0;background:#0006;display:flex;align-items:center;justify-content:center;padding:20px;z-index:10}.modal{background:var(--paper);border-radius:16px;padding:24px;width:100%;max-width:560px;max-height:90vh;overflow-y:auto}.modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:18px}