*{box-sizing:border-box}
body{margin:0;font-family:tahoma,Arial,sans-serif;background:#f5f6f8;color:#222;min-height:100vh}
a{color:inherit}
.app-shell{min-height:100vh;display:flex;flex-direction:row}
.sidebar{width:265px;background:#111827;color:#fff;position:fixed;right:0;top:0;bottom:0;display:flex;flex-direction:column;padding:18px 14px;z-index:10;box-shadow:-10px 0 30px rgba(0,0,0,.08)}
.sidebar-brand{display:flex;gap:12px;align-items:center;padding:8px 8px 22px;border-bottom:1px solid rgba(255,255,255,.08);margin-bottom:14px}
.logo{width:42px;height:42px;border-radius:14px;background:#2563eb;display:flex;align-items:center;justify-content:center;font-weight:bold;letter-spacing:.5px}
.sidebar-brand strong{display:block;font-size:15px}.sidebar-brand span{display:block;color:#9ca3af;font-size:12px;margin-top:3px}
.side-nav{display:flex;flex-direction:column;gap:6px;flex:1}.side-nav a{display:flex;align-items:center;gap:10px;text-decoration:none;color:#d1d5db;padding:12px 12px;border-radius:12px;transition:.15s background,.15s color}.side-nav a:hover,.side-nav a.active{background:#1f2937;color:#fff}.side-nav a.active{box-shadow:inset -3px 0 0 #3b82f6}.side-nav a.disabled{opacity:.45;cursor:not-allowed}.nav-icon{width:24px;text-align:center}
.sidebar-footer{border-top:1px solid rgba(255,255,255,.08);padding-top:14px}.user-box{background:#1f2937;border-radius:12px;padding:10px 12px;margin-bottom:10px}.user-box strong{display:block;font-size:13px}.user-box span{display:block;color:#9ca3af;font-size:12px;margin-top:3px}.logout-link{display:block;text-align:center;text-decoration:none;background:#dc2626;color:#fff;border-radius:10px;padding:10px 12px}
.content-area{margin-right:265px;width:calc(100% - 265px);min-height:100vh}.mobile-topbar{display:none;background:#111827;color:#fff;padding:12px 16px;justify-content:space-between;align-items:center}.brand{font-weight:bold}.container{max-width:1200px;margin:24px auto;padding:0 16px}.card{background:#fff;border:1px solid #e5e7eb;border-radius:14px;padding:18px;margin-bottom:18px;box-shadow:0 8px 24px rgba(0,0,0,.04)}.alert{padding:12px 14px;border-radius:10px;margin-bottom:16px}.success{background:#ecfdf5;color:#065f46;border:1px solid #a7f3d0}.error{background:#fef2f2;color:#991b1b;border:1px solid #fecaca}table{width:100%;border-collapse:collapse;background:#fff}th,td{padding:12px;border-bottom:1px solid #eee;text-align:right;vertical-align:middle}th{background:#f9fafb;color:#6b7280}.btn{display:inline-block;background:#2563eb;color:#fff;border:0;border-radius:9px;padding:9px 14px;text-decoration:none;cursor:pointer}.btn.gray{background:#6b7280}.btn.red{background:#dc2626}.input{width:100%;padding:10px;border:1px solid #d1d5db;border-radius:9px}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.thumb{width:56px;height:56px;border-radius:10px;object-fit:cover;background:#eee}.muted{color:#6b7280;font-size:13px}.ltr{direction:ltr;text-align:left}.actions{display:flex;gap:8px;align-items:center}.searchbox{display:flex;gap:8px}.searchbox input{max-width:420px}.table-wrap{overflow-x:auto}
@media(max-width:900px){.app-shell{display:block}.sidebar{position:static;width:100%;height:auto;border-radius:0}.sidebar-brand{padding-bottom:14px}.side-nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.sidebar-footer{display:flex;gap:10px;align-items:center;justify-content:space-between}.user-box{margin-bottom:0;flex:1}.logout-link{min-width:90px}.content-area{margin-right:0;width:100%}.mobile-topbar{display:none}.container{margin:16px auto}.grid{grid-template-columns:1fr}.searchbox{display:block}.searchbox .btn{margin-top:8px}table{min-width:760px}}