*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{--primary:#14b8a6;--secondary:#0f172a;--text:#1e293b;--text-light:#64748b;--bg:#f1f5f9;--card:#fff;--border:#e2e8f0;--radius:10px;--danger:#ef4444;--success:#22c55e;--warn:#f59e0b;}
body{font-family:'Inter',sans-serif;background:var(--bg);color:var(--text);line-height:1.6}

.login-page{display:flex;align-items:center;justify-content:center;min-height:100vh;background:linear-gradient(135deg,#0f172a,#1e293b)}
.login-card{background:#fff;border-radius:16px;padding:48px;width:100%;max-width:420px;box-shadow:0 20px 60px rgba(0,0,0,.3)}
.login-header{text-align:center;margin-bottom:32px}
.login-header h1{font-size:2rem;color:var(--secondary)}
.login-header p{color:var(--text-light);margin-top:4px}
.login-footer{text-align:center;margin-top:20px;color:var(--text-light);font-size:.85rem}
.error-msg{background:#fef2f2;color:var(--danger);padding:10px 16px;border-radius:8px;font-size:.9rem;margin-bottom:12px;border:1px solid #fecaca}
.success-msg{background:#f0fdf4;color:var(--success);padding:10px 16px;border-radius:8px;font-size:.9rem;margin-bottom:12px;border:1px solid #bbf7d0}

.form-group{margin-bottom:20px}
.form-group label{display:block;font-weight:600;font-size:.9rem;margin-bottom:6px;color:var(--text)}
.form-group input,.form-group textarea,.form-group select{width:100%;padding:10px 14px;border:1px solid var(--border);border-radius:8px;font-size:.95rem;font-family:inherit;transition:border .2s}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(20,184,166,.15)}
.form-group textarea{min-height:120px;resize:vertical}
.form-group .help{font-size:.8rem;color:var(--text-light);margin-top:4px}

.btn{display:inline-flex;align-items:center;gap:6px;padding:10px 20px;border:none;border-radius:8px;font-size:.9rem;font-weight:600;cursor:pointer;transition:all .2s;text-decoration:none}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:#0d9488}
.btn-secondary{background:var(--bg);color:var(--text);border:1px solid var(--border)}
.btn-secondary:hover{background:#e2e8f0}
.btn-danger{background:var(--danger);color:#fff}
.btn-danger:hover{background:#dc2626}
.btn-sm{padding:6px 12px;font-size:.8rem}
.btn-full{width:100%;justify-content:center;padding:12px}

.admin-layout{display:flex;min-height:100vh}
.sidebar{width:260px;background:var(--secondary);color:#fff;padding:0;flex-shrink:0;position:fixed;top:0;left:0;bottom:0;overflow-y:auto;z-index:100}
.sidebar-header{padding:24px;border-bottom:1px solid rgba(255,255,255,.1)}
.sidebar-header h2{font-size:1.2rem;display:flex;align-items:center;gap:8px}
.sidebar-header p{font-size:.8rem;color:rgba(255,255,255,.5);margin-top:2px}
.sidebar-nav{padding:12px 0}
.sidebar-nav a{display:flex;align-items:center;gap:10px;padding:10px 24px;color:rgba(255,255,255,.7);text-decoration:none;font-size:.9rem;transition:all .15s;border-left:3px solid transparent}
.sidebar-nav a:hover{background:rgba(255,255,255,.05);color:#fff}
.sidebar-nav a.active{background:rgba(20,184,166,.15);color:var(--primary);border-left-color:var(--primary)}
.sidebar-nav .nav-section{padding:8px 24px 4px;font-size:.7rem;text-transform:uppercase;letter-spacing:1px;color:rgba(255,255,255,.3);margin-top:8px}

.main-content{margin-left:260px;flex:1;padding:32px;min-height:100vh}
.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:32px}
.page-header h1{font-size:1.5rem;color:var(--secondary)}
.page-header .actions{display:flex;gap:8px}

.panel{background:var(--card);border-radius:var(--radius);border:1px solid var(--border);padding:28px;margin-bottom:24px}
.panel h3{font-size:1.1rem;margin-bottom:20px;color:var(--secondary);padding-bottom:12px;border-bottom:1px solid var(--border)}

.item-list{display:flex;flex-direction:column;gap:8px;max-height:70vh;overflow-y:auto;}
.item-row{display:flex;align-items:center;gap:12px;padding:12px 16px;background:var(--bg);border-radius:8px;border:1px solid var(--border)}
.item-row .item-info{flex:1;min-width:0}
.item-row .item-info h4{font-size:.95rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.item-row .item-info p{font-size:.8rem;color:var(--text-light)}
.item-row .item-thumb{width:48px;height:48px;border-radius:8px;object-fit:cover;flex-shrink:0}
.item-row .item-actions{display:flex;gap:4px;flex-shrink:0}

.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:1000;display:flex;align-items:center;justify-content:center;padding:20px}
.modal{background:#fff;border-radius:16px;width:100%;max-width:600px;max-height:90vh;overflow-y:auto;box-shadow:0 20px 60px rgba(0,0,0,.2)}
.modal-header{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;border-bottom:1px solid var(--border)}
.modal-header h2{font-size:1.2rem}
.modal-header .close-btn{background:none;border:none;font-size:1.4rem;cursor:pointer;color:var(--text-light);padding:4px}
.modal-body{padding:24px}
.modal-footer{padding:16px 24px;border-top:1px solid var(--border);display:flex;justify-content:flex-end;gap:8px}

.toggle-wrap{display:flex;align-items:center;gap:10px}
.toggle{position:relative;width:44px;height:24px;cursor:pointer}
.toggle input{opacity:0;width:0;height:0}
.toggle .slider{position:absolute;inset:0;background:#cbd5e1;border-radius:24px;transition:.2s}
.toggle .slider::before{content:'';position:absolute;width:18px;height:18px;border-radius:50%;background:#fff;top:3px;left:3px;transition:.2s}
.toggle input:checked+.slider{background:var(--primary)}
.toggle input:checked+.slider::before{transform:translateX(20px)}

.color-input{display:flex;align-items:center;gap:10px}
.color-input input[type=color]{width:44px;height:36px;border:1px solid var(--border);border-radius:6px;cursor:pointer;padding:2px}
.color-input input[type=text]{flex:1}

.toast{position:fixed;bottom:24px;right:24px;padding:14px 24px;background:var(--secondary);color:#fff;border-radius:10px;font-size:.9rem;font-weight:500;z-index:9999;opacity:0;transform:translateY(20px);transition:.3s;box-shadow:0 8px 25px rgba(0,0,0,.2)}
.toast.show{opacity:1;transform:translateY(0)}
.toast.success{background:var(--success)}
.toast.error{background:var(--danger)}

.tabs{display:flex;gap:4px;margin-bottom:24px;border-bottom:2px solid var(--border);padding-bottom:0}
.tabs button{background:none;border:none;padding:10px 20px;font-size:.9rem;font-weight:500;color:var(--text-light);cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-2px;transition:.2s}
.tabs button.active{color:var(--primary);border-bottom-color:var(--primary)}

.export-section{margin-top:24px;padding:24px;background:#f8fafc;border-radius:10px;border:1px solid var(--border)}
.export-section h3{margin-bottom:12px;font-size:1rem}
.export-section p{font-size:.9rem;color:var(--text-light);margin-bottom:16px}

@media(max-width:768px){
  .sidebar{transform:translateX(-100%);transition:transform .3s}
  .sidebar.open{transform:translateX(0)}
  .main-content{margin-left:0}
  .mobile-sidebar-toggle{display:block;position:fixed;top:16px;left:16px;z-index:101;background:var(--secondary);color:#fff;border:none;width:40px;height:40px;border-radius:8px;font-size:1.2rem;cursor:pointer}
}