:root{--bg-primary:#0f1117;--bg-secondary:#1a1d27;--bg-card:#232730;--bg-input:#181b20;--border:#313544;--border-focus:#5b7fff;--text-primary:#e8eaed;--text-secondary:#9aa0b0;--text-muted:#666b7a;--accent:#5b7fff;--accent-hover:#4a6be8;--accent-subtle:rgba(91,127,255,0.12);--danger:#ff4d6a;--danger-hover:#e63e58;--success:#34d399;--success-bg:rgba(52,211,153,0.12);--warning:#fbbf24;--sidebar-width:260px;--radius:12px;--radius-sm:8px;--shadow:0 4px 24px rgba(0,0,0,0.25);--shadow-sm:0 2px 8px rgba(0,0,0,0.15)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg-primary);color:var(--text-primary);min-height:100vh;-webkit-font-smoothing:antialiased}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.app-layout{display:flex;min-height:100vh}.sidebar{width:var(--sidebar-width);background:var(--bg-secondary);border-right:1px solid var(--border);padding:24px 0;position:fixed;top:0;left:0;bottom:0;overflow-y:auto;z-index:100}.sidebar-logo{padding:0 24px 28px;border-bottom:1px solid var(--border);margin-bottom:16px}.sidebar-logo h1{font-size:18px;font-weight:700;background:linear-gradient(135deg,var(--accent),#a78bfa);-webkit-background-clip:text;-webkit-text-fill-color:transparent;letter-spacing:-.3px}.sidebar-logo p{font-size:12px;color:var(--text-muted);margin-top:4px}.sidebar-nav{list-style:none;padding:0 12px}.sidebar-nav li{margin-bottom:2px}.sidebar-nav a,.sidebar-nav button{display:flex;align-items:center;gap:12px;padding:11px 16px;border-radius:var(--radius-sm);color:var(--text-secondary);text-decoration:none;font-size:14px;font-weight:500;transition:all .15s ease;cursor:pointer;border:none;background:none;width:100%;text-align:left}.sidebar-nav a:hover,.sidebar-nav button:hover{background:var(--accent-subtle);color:var(--text-primary)}.sidebar-nav a.active,.sidebar-nav button.active{background:var(--accent-subtle);color:var(--accent);font-weight:600}.sidebar-nav .nav-icon{width:20px;height:20px;display:flex;align-items:center;justify-content:center;font-size:16px}.sidebar-section{padding:16px 24px 8px;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.8px;color:var(--text-muted)}.main-content{margin-left:var(--sidebar-width);flex:1 1;padding:32px 40px;min-height:100vh}.page-header{margin-bottom:32px}.page-header h2{font-size:28px;font-weight:700;letter-spacing:-.5px;margin-bottom:8px}.page-header p{color:var(--text-secondary);font-size:15px}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;margin-bottom:20px;box-shadow:var(--shadow-sm)}.card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.card-header h3{font-size:16px;font-weight:600}.form-group{margin-bottom:20px}.form-group label{display:block;font-size:13px;font-weight:500;color:var(--text-secondary);margin-bottom:8px}input[type=email],input[type=password],input[type=text],input[type=url],select,textarea{width:100%;padding:10px 14px;background:var(--bg-input);border:1.5px solid var(--border);border-radius:var(--radius-sm);color:var(--text-primary);font-size:14px;font-family:inherit;transition:border-color .2s;outline:none}input:focus,select:focus,textarea:focus{border-color:var(--border-focus)}textarea{min-height:80px;resize:vertical}.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 20px;border-radius:var(--radius-sm);font-size:14px;font-weight:500;font-family:inherit;cursor:pointer;border:none;transition:all .15s ease}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-hover)}.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover{background:var(--danger-hover)}.btn-secondary{background:var(--bg-input);color:var(--text-primary);border:1.5px solid var(--border)}.btn-secondary:hover{border-color:var(--text-muted)}.btn-sm{padding:6px 14px;font-size:13px}.btn-icon{width:36px;height:36px;padding:0;justify-content:center;border-radius:var(--radius-sm)}.btn-icon,.toggle-wrapper{display:flex;align-items:center}.toggle-wrapper{gap:12px}.toggle{position:relative;width:44px;height:24px;cursor:pointer}.toggle input{opacity:0;width:0;height:0}.toggle-slider{position:absolute;top:0;left:0;right:0;bottom:0;background:var(--border);border-radius:12px;transition:.3s}.toggle-slider:before{content:"";position:absolute;height:18px;width:18px;left:3px;bottom:3px;background:#fff;border-radius:50%;transition:.3s}.toggle input:checked+.toggle-slider{background:var(--accent)}.toggle input:checked+.toggle-slider:before{transform:translateX(20px)}.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:20px;font-size:12px;font-weight:600}.badge-success{background:var(--success-bg);color:var(--success)}.badge-danger{background:rgba(255,77,106,.12);color:var(--danger)}.badge-warning{background:rgba(251,191,36,.12);color:var(--warning)}.grid-2{grid-template-columns:1fr 1fr;grid-gap:20px}.grid-2,.grid-3{display:grid;gap:20px}.grid-3{grid-template-columns:1fr 1fr 1fr;grid-gap:20px}.grid-4{display:grid;grid-template-columns:repeat(4,1fr);grid-gap:20px;gap:20px}.table-wrapper{overflow-x:auto}table{width:100%;border-collapse:collapse}td,th{padding:12px 16px;text-align:left;border-bottom:1px solid var(--border)}th{font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;color:var(--text-muted)}td{font-size:14px}tr:hover td{background:rgba(255,255,255,.02)}.toast{position:fixed;bottom:24px;right:24px;padding:14px 24px;border-radius:var(--radius-sm);font-size:14px;font-weight:500;z-index:1000;animation:slideIn .3s ease}.toast-success{background:var(--success);color:#000}.toast-error{background:var(--danger);color:#fff}@keyframes slideIn{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--bg-primary) 0,#1a1040 50%,var(--bg-primary) 100%)}.login-card{background:var(--bg-card);border:1px solid var(--border);border-radius:20px;padding:48px 40px;width:100%;max-width:400px;box-shadow:0 24px 64px rgba(0,0,0,.4)}.login-card h2{font-size:24px;font-weight:700;text-align:center;margin-bottom:8px}.login-card .subtitle{text-align:center;color:var(--text-muted);font-size:14px;margin-bottom:32px}.login-card .form-group{margin-bottom:16px}.login-card .btn{width:100%;justify-content:center;padding:12px;font-size:15px;margin-top:8px}.login-error{color:var(--danger);font-size:13px;text-align:center;margin-top:12px}.image-upload-area{border:2px dashed var(--border);border-radius:var(--radius);padding:24px;text-align:center;cursor:pointer;transition:border-color .2s;background:var(--bg-input)}.image-upload-area:hover{border-color:var(--accent)}.image-upload-area img{max-width:100%;max-height:200px;border-radius:var(--radius-sm);object-fit:contain}.image-upload-area .placeholder{color:var(--text-muted);font-size:14px}.kiosk-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:20px 24px;display:flex;align-items:center;gap:20px;transition:border-color .2s;cursor:pointer}.kiosk-card:hover{border-color:var(--accent)}.kiosk-card .kiosk-icon{width:48px;height:48px;border-radius:12px;background:var(--accent-subtle);display:flex;align-items:center;justify-content:center;font-size:22px;flex-shrink:0}.kiosk-card .kiosk-info{flex:1 1}.kiosk-card .kiosk-info h4{font-size:15px;font-weight:600;margin-bottom:4px}.kiosk-card .kiosk-info p{font-size:13px;color:var(--text-secondary)}.empty-state{text-align:center;padding:60px 20px;color:var(--text-muted)}.empty-state .icon{font-size:48px;margin-bottom:16px}.empty-state p{font-size:15px}.flex-row{gap:12px}.flex-between,.flex-row{display:flex;align-items:center}.flex-between{justify-content:space-between}.mt-8{margin-top:8px}.mt-12{margin-top:12px}.mt-16{margin-top:16px}.mt-20{margin-top:20px}.mb-8{margin-bottom:8px}.mb-16{margin-bottom:16px}.mb-20{margin-bottom:20px}.gap-8{gap:8px}.gap-16{gap:16px}.screensaver-grid{display:grid;grid-template-columns:repeat(2,1fr);grid-gap:20px;gap:20px}.screensaver-slot{aspect-ratio:9/16;border:2px dashed var(--border);border-radius:var(--radius);overflow:hidden;position:relative;cursor:pointer;background:var(--bg-input);display:flex;align-items:center;justify-content:center}.screensaver-slot img{width:100%;height:100%;object-fit:cover}.screensaver-slot .overlay{position:absolute;inset:0;background:rgba(0,0,0,.5);display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .2s}.screensaver-slot:hover .overlay{opacity:1}.screensaver-slot .slot-label{color:var(--text-muted);font-size:14px}