:root{--bg: #0f1420;--surface: #171e2e;--surface-2: #1e2740;--border: #2a3550;--text: #e6ebf5;--muted: #8b96ad;--accent: #4f8cff;--green: #34c98e;--amber: #f5b83d;--red: #f06a6a}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);font-size:14px}#root{min-height:100vh}.layout{display:flex;min-height:100vh}.sidebar{position:sticky;top:0;height:100dvh;overflow-y:auto;width:240px;background:var(--surface);border-right:1px solid var(--border);padding:24px 12px;display:flex;flex-direction:column;gap:4px;flex-shrink:0}.sidebar-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.sidebar-heading .brand{padding-bottom:0}.sidebar nav{display:flex;flex-direction:column;gap:4px}.mobile-header,.menu-backdrop{display:none}.menu-icon{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;flex-shrink:0;border:1px solid var(--border);border-radius:10px;background:transparent;color:var(--text);cursor:pointer}.menu-icon:hover{background:var(--surface-2)}.menu-icon:focus-visible,.nav-item:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.sidebar-close{display:none}.app-content{flex:1;min-width:0}.brand{font-size:17px;font-weight:700;padding:0 12px 20px;letter-spacing:.3px}.brand span{color:var(--accent)}.nav-item{display:block;width:100%;text-align:left;padding:10px 12px;border:none;border-radius:8px;background:transparent;color:var(--muted);font-size:14px;cursor:pointer;transition:background .15s,color .15s}.nav-item:hover{background:var(--surface-2);color:var(--text)}.nav-item.active{background:var(--surface-2);color:var(--text);font-weight:600}.sidebar .spacer{flex:1}.sandbox-banner{background:#f5b83d26;border:1px solid var(--amber);color:var(--amber);border-radius:8px;text-align:center;font-weight:700;font-size:12px;letter-spacing:1px;padding:8px;margin:0 0 6px}.session-info{padding:10px 12px;border-top:1px solid var(--border)}.session-name{font-weight:600;font-size:13.5px}.session-email{color:var(--muted);font-size:12px;overflow:hidden;text-overflow:ellipsis;overflow-wrap:anywhere}.main{flex:1;padding:28px 32px;overflow-x:auto}.page-title{font-size:21px;font-weight:700;margin-bottom:4px}.page-subtitle{color:var(--muted);margin-bottom:24px}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:28px}.card{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:18px 20px}.card .label{color:var(--muted);font-size:12.5px;text-transform:uppercase;letter-spacing:.6px;margin-bottom:8px}.card .value{font-size:26px;font-weight:700}.card .value.green{color:var(--green)}.card .value.amber{color:var(--amber)}.card .value.red{color:var(--red)}.panel{background:var(--surface);border:1px solid var(--border);border-radius:12px;overflow-x:auto;margin-bottom:24px}.panel table th,.panel table td{white-space:nowrap}.panel table td.wrap{white-space:normal}.panel h3{font-size:14px;padding:14px 18px;border-bottom:1px solid var(--border)}table{width:100%;border-collapse:collapse}th{text-align:left;padding:10px 18px;color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.5px;border-bottom:1px solid var(--border)}td{padding:11px 18px;border-bottom:1px solid var(--border)}tr:last-child td{border-bottom:none}td.num,th.num{text-align:right;font-variant-numeric:tabular-nums}.empty{padding:36px;text-align:center;color:var(--muted)}.badge{display:inline-block;padding:3px 10px;border-radius:20px;font-size:12px;font-weight:600}.badge.green{background:#34c98e26;color:var(--green)}.badge.amber{background:#f5b83d26;color:var(--amber)}.badge.red{background:#f06a6a26;color:var(--red)}.badge.gray{background:#8b96ad26;color:var(--muted)}.toolbar{display:flex;gap:10px;margin-bottom:18px;align-items:center;flex-wrap:wrap}input,select{background:var(--surface);border:1px solid var(--border);border-radius:8px;color:var(--text);padding:9px 12px;font-size:14px;outline:none}input:focus,select:focus{border-color:var(--accent)}button.btn,a.btn{background:var(--accent);border:none;border-radius:8px;color:#fff;font-weight:600;padding:9px 16px;font-size:14px;cursor:pointer;text-decoration:none;text-align:center}button.btn:hover,a.btn:hover{filter:brightness(1.1)}button.btn:disabled{opacity:.5;cursor:default}button.btn.secondary{background:var(--surface-2);color:var(--text);border:1px solid var(--border)}button.btn.small{padding:5px 12px;font-size:12.5px}.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center}.login-box{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:36px;width:min(360px,calc(100vw - 32px));display:flex;flex-direction:column;gap:14px}@media (max-width: 700px){.mobile-header{position:sticky;top:0;z-index:10;display:flex;align-items:center;gap:12px;padding:calc(8px + env(safe-area-inset-top,0px)) 14px 8px;background:var(--surface);border-bottom:1px solid var(--border)}.mobile-header .brand{padding:0;white-space:nowrap}.mobile-page{margin-left:auto;color:var(--muted);font-size:12px}.sidebar{position:fixed;inset:0 auto 0 0;z-index:30;width:min(280px,calc(100vw - 48px));padding:calc(18px + env(safe-area-inset-top,0px)) 12px calc(12px + env(safe-area-inset-bottom,0px));transform:translate(-100%);visibility:hidden;transition:transform .2s ease,visibility 0s .2s;box-shadow:12px 0 36px #00000040}.sidebar.is-open{transform:translate(0);visibility:visible;transition:transform .2s ease,visibility 0s}.sidebar-close{display:inline-flex}.sidebar .nav-item{min-height:44px}.menu-backdrop{display:block;position:fixed;top:0;right:0;bottom:0;left:0;z-index:20;border:0;background:#0009}.main{padding:18px 14px;min-width:0}.cards{grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}}@media (prefers-reduced-motion: reduce){.sidebar{transition:none}}.login-box h1{font-size:19px}.login-box p{color:var(--muted);font-size:13px}.error-text{color:var(--red);font-size:13px}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0000008c;display:flex;align-items:center;justify-content:center;z-index:50}.modal{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:26px;width:420px;display:flex;flex-direction:column;gap:14px}.field-label{display:flex;flex-direction:column;gap:6px;font-size:13px;color:var(--muted)}.field-label input[type=file]{padding:7px;font-size:13px}.toast{position:fixed;bottom:24px;right:24px;background:var(--surface-2);border:1px solid var(--border);border-radius:10px;padding:12px 18px;max-width:380px;box-shadow:0 8px 24px #0006}