:root{--bg:#0a0a0b;--surface:#141416;--border:#2a2a2e;--text:#f5f5f7;--muted:#8e8e93;--accent:#c9a227;--green:#10b981;--danger:#ef4444}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button{cursor:pointer}.card{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:1.25rem}.btn{display:inline-block;background:var(--accent);color:#000;border:none;border-radius:8px;padding:.625rem 1rem;font-weight:600;white-space:nowrap;text-align:center;vertical-align:middle}.btn-secondary{background:transparent;color:var(--text);border:1px solid var(--border)}.btn-danger{background:var(--danger);color:#fff}.input{width:100%;background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:.625rem .75rem;color:var(--text)}.table{width:100%;border-collapse:collapse}.table td,.table th{text-align:left;padding:.75rem;border-bottom:1px solid var(--border)}.table th{color:var(--muted);font-size:.875rem;font-weight:500}.badge{display:inline-block;padding:.25rem .5rem;border-radius:999px;font-size:.75rem;font-weight:600}.badge-pending{background:#374151;color:#d1d5db}.badge-confirmed{background:#065f46;color:#6ee7b7}.badge-declined{background:#7f1d1d;color:#fca5a5}.layout{display:grid;grid-template-columns:240px 1fr;min-height:100vh}.sidebar{background:var(--surface);border-right:1px solid var(--border);padding:1.5rem 1rem}.sidebar h1{font-size:1.125rem;margin:0 0 1.5rem;color:var(--accent)}.sidebar nav,.sidebar-section{display:flex;flex-direction:column;gap:.25rem}.sidebar-section+.sidebar-section{margin-top:1rem;padding-top:1rem;border-top:1px solid var(--border)}.sidebar-section-label{padding:0 .75rem .35rem;font-size:.7rem;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--muted)}.sidebar a{padding:.625rem .75rem;border-radius:8px;color:var(--muted)}.sidebar a.active,.sidebar a:hover{background:var(--bg);color:var(--text)}.main{padding:2rem}.page-header{display:flex;justify-content:space-between;align-items:center;gap:.75rem;flex-wrap:wrap;margin-bottom:1.5rem}.page-header h2{margin:0;font-size:1.5rem}.grid-2{display:grid;grid-template-columns:repeat(2,1fr);grid-gap:1rem;gap:1rem}.form-group{margin-bottom:1rem}.form-group label{display:block;margin-bottom:.375rem;color:var(--muted);font-size:.875rem}.alert{padding:.75rem 1rem;border-radius:8px;margin-bottom:1rem}.alert-error{background:#450a0a;border:1px solid #7f1d1d;color:#fca5a5}.alert-success{background:#064e3b;border:1px solid #065f46;color:#6ee7b7}