*{box-sizing:border-box}:root{--sidebar:245px;--border:#dfe3e8;--text:#1f2937;--muted:#667085;--bg:#f5f7fa;--panel:#fff;--nav:#162232}
html,body{margin:0;min-height:100%;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text)}a{color:inherit}
.app-shell{min-height:100vh}.sidebar{position:fixed;inset:0 auto 0 0;width:var(--sidebar);background:var(--nav);color:#fff;padding:20px 14px;display:flex;flex-direction:column;z-index:50}
.brand{font-size:27px;font-weight:800;letter-spacing:2px;padding:8px 12px 22px}.side-nav{display:flex;flex-direction:column;gap:5px}
.side-nav a,.sidebar-bottom a{display:block;text-decoration:none;padding:12px 13px;border-radius:8px;color:#f3f4f6}.side-nav a:hover,.sidebar-bottom a:hover{background:rgba(255,255,255,.09)}
.sidebar-bottom{margin-top:auto;border-top:1px solid rgba(255,255,255,.15);padding-top:14px}.user-name{padding:8px 13px;font-weight:700}
.main-column{margin-left:var(--sidebar);min-height:100vh}.content{max-width:1250px;margin:0 auto;padding:28px}.mobile-header{display:none}
.page-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}h1{font-size:28px;margin:0}
.card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:20px;margin-bottom:18px;box-shadow:0 1px 2px rgba(16,24,40,.04)}
.grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.metric{font-size:28px;font-weight:800;margin-top:6px}.label{font-size:13px;color:var(--muted)}
.form-row{margin-bottom:14px}label{display:block;font-weight:700;margin-bottom:6px}input{width:100%;max-width:520px;padding:11px 12px;border:1px solid #cbd5e1;border-radius:8px;font-size:16px}
button,.button{display:inline-block;padding:10px 14px;border-radius:8px;border:0;background:#162232;color:#fff;text-decoration:none;font-size:15px;cursor:pointer}
.error{background:#fee2e2;color:#991b1b;padding:11px 13px;border-radius:8px;margin-bottom:14px}.success{background:#dcfce7;color:#166534;padding:11px 13px;border-radius:8px;margin-bottom:14px}.small{font-size:13px;color:var(--muted)}
.auth-wrap{max-width:460px;margin:8vh auto;padding:20px}.auth-brand{text-align:center;font-size:34px;font-weight:800;letter-spacing:2px;margin-bottom:18px}.code-box{font-family:monospace;font-size:18px;word-break:break-all;background:#f3f4f6;padding:12px;border-radius:8px}.recovery{font-family:monospace;line-height:1.8}
@media(max-width:1000px){.grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:820px){.sidebar{transform:translateX(-102%);transition:transform .2s ease;width:min(82vw,290px);box-shadow:8px 0 24px rgba(0,0,0,.2)}.sidebar.open{transform:translateX(0)}.main-column{margin-left:0}.mobile-header{display:flex;position:sticky;top:0;z-index:40;align-items:center;gap:12px;height:58px;padding:0 16px;background:#fff;border-bottom:1px solid var(--border)}.menu-btn{background:transparent;color:#111827;padding:8px 10px;font-size:22px}.content{padding:18px 14px}h1{font-size:24px}}
@media(max-width:560px){.grid{grid-template-columns:1fr}.card{padding:16px}.auth-wrap{margin:3vh auto;padding:14px}}