@import "https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap";:root{--bg-primary:#faf9f7;--bg-secondary:#f2f0ec;--bg-card:#fff;--bg-card-hover:#fbf8f4;--bg-input:#fff;--bg-overlay:#201c1880;--border-primary:#e5e0da;--border-secondary:#ede9e3;--border-focus:#c47b47;--text-primary:#2d2a26;--text-secondary:#6b645b;--text-muted:#9b9389;--text-inverse:#fff;--accent:#c47b47;--accent-hover:#b06a38;--accent-light:#c47b471a;--accent-glow:#c47b4733;--success:#3d8b52;--success-bg:#3d8b5214;--danger:#c4413a;--danger-hover:#a83832;--danger-bg:#c4413a0f;--warning:#c08a30;--warning-bg:#c08a3014;--offline:#9b9389;--offline-bg:#9b938914;--radius:12px;--radius-sm:8px;--radius-xs:6px;--radius-full:9999px;--shadow-sm:0 1px 3px #2d2a260f;--shadow-md:0 4px 12px #2d2a2614;--shadow-lg:0 8px 32px #2d2a261f;--transition:all .2s ease;--transition-fast:all .15s ease;--font:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif}*,:before,:after{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font);background:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;min-height:100vh;font-size:16px;line-height:1.6}#root{flex-direction:column;min-height:100vh;display:flex}.login-page{background:linear-gradient(160deg,#faf9f7 0%,#f2ede6 40%,#eae1d6 100%);justify-content:center;align-items:center;min-height:100vh;display:flex;position:relative;overflow:hidden}.login-page:before{content:"";background:radial-gradient(circle,#c47b4714 0%,#0000 70%);width:500px;height:500px;animation:10s ease-in-out infinite float;position:absolute;top:10%;right:15%}.login-page:after{content:"";background:radial-gradient(circle,#c08a300f 0%,#0000 70%);width:400px;height:400px;animation:8s ease-in-out infinite reverse float;position:absolute;bottom:15%;left:10%}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-20px)}}.login-card{background:var(--bg-card);border:1px solid var(--border-primary);z-index:1;width:100%;max-width:400px;box-shadow:var(--shadow-lg);border-radius:16px;padding:48px 40px;position:relative}.login-card h1{text-align:center;color:var(--text-primary);margin-bottom:6px;font-size:28px;font-weight:700}.login-card .subtitle{text-align:center;color:var(--text-secondary);margin-bottom:36px;font-size:14px}.form-group{margin-bottom:20px}.form-group label{color:var(--text-secondary);margin-bottom:6px;font-size:13px;font-weight:500;display:block}.form-input{background:var(--bg-input);border:1px solid var(--border-primary);border-radius:var(--radius-sm);width:100%;color:var(--text-primary);font-size:15px;font-family:var(--font);transition:var(--transition);outline:none;padding:12px 16px}.form-input:focus{border-color:var(--border-focus);box-shadow:0 0 0 3px var(--accent-glow)}.form-input::placeholder{color:var(--text-muted)}.btn{border-radius:var(--radius-sm);font-size:14px;font-weight:600;font-family:var(--font);cursor:pointer;transition:var(--transition);border:none;outline:none;justify-content:center;align-items:center;gap:8px;min-height:44px;padding:12px 24px;display:inline-flex}.btn:disabled{opacity:.45;cursor:not-allowed}.btn-primary{background:var(--accent);color:var(--text-inverse);width:100%}.btn-primary:hover:not(:disabled){background:var(--accent-hover);box-shadow:0 4px 12px var(--accent-glow);transform:translateY(-1px)}.btn-primary:active:not(:disabled){transform:translateY(0)}.btn-accent{background:var(--accent);color:var(--text-inverse)}.btn-accent:hover:not(:disabled){background:var(--accent-hover)}.btn-danger{color:var(--danger);border:1px solid var(--danger);background:0 0}.btn-danger:hover:not(:disabled){background:var(--danger);color:var(--text-inverse)}.btn-ghost{color:var(--text-secondary);border:1px solid var(--border-primary);background:0 0}.btn-ghost:hover:not(:disabled){background:var(--bg-secondary);color:var(--text-primary)}.btn-sm{min-height:36px;padding:8px 16px;font-size:13px}.app-layout{min-height:100vh;display:flex}.sidebar{background:var(--bg-card);border-right:1px solid var(--border-secondary);flex-direction:column;flex-shrink:0;width:240px;padding:24px 12px;display:flex}.sidebar-logo{color:var(--text-primary);border-bottom:1px solid var(--border-secondary);margin-bottom:20px;padding:0 12px 20px;font-size:20px;font-weight:700}.sidebar-nav{flex-direction:column;flex:1;gap:2px;display:flex}.nav-item{border-radius:var(--radius-sm);color:var(--text-secondary);cursor:pointer;transition:var(--transition-fast);text-align:left;width:100%;font-size:14px;font-weight:500;font-family:var(--font);background:0 0;border:none;align-items:center;gap:10px;min-height:44px;padding:10px 12px;display:flex}.nav-item:hover{background:var(--bg-secondary);color:var(--text-primary)}.nav-item.active{background:var(--accent-light);color:var(--accent);font-weight:600}.sidebar-footer{border-top:1px solid var(--border-secondary);padding-top:12px}.main-content{background:var(--bg-primary);flex:1;padding:32px 40px;overflow-y:auto}.page-header{justify-content:space-between;align-items:center;margin-bottom:28px;display:flex}.page-header h2{color:var(--text-primary);font-size:24px;font-weight:700}.stats-grid{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:32px;display:grid}.stat-card{background:var(--bg-card);border:1px solid var(--border-secondary);border-radius:var(--radius);transition:var(--transition);box-shadow:var(--shadow-sm);padding:20px 24px}.stat-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}.stat-card .stat-label{color:var(--text-muted);margin-bottom:8px;font-size:13px;font-weight:500}.stat-card .stat-value{color:var(--text-primary);font-size:28px;font-weight:700}.stat-card .stat-value.online{color:var(--success)}.stat-card .stat-value.offline{color:var(--text-muted)}.device-grid{grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:16px;display:grid}.device-card{background:var(--bg-card);border:1px solid var(--border-secondary);border-radius:var(--radius);transition:var(--transition);box-shadow:var(--shadow-sm);cursor:default;padding:24px}.device-card:hover{box-shadow:var(--shadow-md);border-color:var(--border-primary)}.device-card-header{justify-content:space-between;align-items:flex-start;margin-bottom:16px;display:flex}.device-name{color:var(--text-primary);font-size:16px;font-weight:600}.device-id{color:var(--text-muted);margin-top:4px;font-family:JetBrains Mono,Fira Code,monospace;font-size:12px}.status-badge{border-radius:var(--radius-full);align-items:center;gap:6px;padding:4px 12px;font-size:12px;font-weight:600;display:inline-flex}.status-badge.online{background:var(--success-bg);color:var(--success)}.status-badge.offline{background:var(--offline-bg);color:var(--offline)}.status-dot{border-radius:50%;width:6px;height:6px}.status-dot.online{background:var(--success);animation:2s ease-in-out infinite pulse;box-shadow:0 0 6px #3d8b5266}.status-dot.offline{background:var(--offline)}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.device-meta{flex-direction:column;gap:8px;display:flex}.device-meta-row{justify-content:space-between;font-size:13px;display:flex}.device-meta-row .label{color:var(--text-muted)}.device-meta-row .value{color:var(--text-secondary);font-weight:500}.device-actions{border-top:1px solid var(--border-secondary);gap:8px;margin-top:16px;padding-top:16px;display:flex}.modal-overlay{background:var(--bg-overlay);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:100;justify-content:center;align-items:center;animation:.15s fadeIn;display:flex;position:fixed;inset:0}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal{background:var(--bg-card);border:1px solid var(--border-primary);border-radius:var(--radius);width:100%;max-width:440px;box-shadow:var(--shadow-lg);padding:32px;animation:.2s slideUp}@keyframes slideUp{0%{opacity:0;transform:translateY(16px)scale(.98)}to{opacity:1;transform:translateY(0)scale(1)}}.modal h3{color:var(--text-primary);margin-bottom:6px;font-size:20px;font-weight:700}.modal p{color:var(--text-secondary);margin-bottom:24px;font-size:14px;line-height:1.5}.modal-actions{justify-content:flex-end;gap:12px;margin-top:24px;display:flex}.auth-code-input{justify-content:center;gap:10px;margin:24px 0;display:flex}.auth-code-input input{text-align:center;background:var(--bg-primary);border:2px solid var(--border-primary);border-radius:var(--radius-sm);width:48px;height:56px;color:var(--text-primary);transition:var(--transition);outline:none;font-family:JetBrains Mono,Fira Code,monospace;font-size:24px;font-weight:700}.auth-code-input input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow)}.alert{border-radius:var(--radius-sm);margin-bottom:16px;padding:12px 16px;font-size:14px;line-height:1.5}.alert-error{background:var(--danger-bg);color:var(--danger);border:1px solid #c4413a33}.alert-success{background:var(--success-bg);color:var(--success);border:1px solid #3d8b5233}.empty-state{text-align:center;color:var(--text-muted);padding:64px 24px}.empty-state .icon{opacity:.6;margin-bottom:16px;font-size:48px}.empty-state h3{color:var(--text-secondary);margin-bottom:8px;font-size:18px;font-weight:600}.empty-state p{color:var(--text-muted);margin-bottom:24px;font-size:14px}.admin-badge{background:var(--accent);color:var(--text-inverse);border-radius:var(--radius-full);margin-left:8px;padding:2px 8px;font-size:11px;font-weight:600}@media (width<=768px){.sidebar{display:none}.main-content{padding:16px}.device-grid{grid-template-columns:1fr}.stats-grid{grid-template-columns:1fr 1fr}}.auth-switch{text-align:center;color:var(--text-muted);margin-top:20px;font-size:14px}.auth-switch-btn{color:var(--accent);cursor:pointer;font-size:14px;font-weight:600;font-family:var(--font);transition:var(--transition-fast);background:0 0;border:none;margin-left:4px;padding:0}.auth-switch-btn:hover{color:var(--accent-hover);text-decoration:underline}.captcha-row{align-items:center;gap:10px;display:flex}.captcha-input{text-transform:uppercase;letter-spacing:4px;flex:1;font-weight:600}.captcha-img{cursor:pointer;border-radius:var(--radius-xs);border:1px solid var(--border-secondary);transition:var(--transition-fast);flex-shrink:0;line-height:0;overflow:hidden}.captcha-img:hover{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent-light)}.captcha-img svg{display:block}.user-table-container{background:var(--bg-card);border:1px solid var(--border-secondary);border-radius:var(--radius);box-shadow:var(--shadow-sm);overflow:hidden}.user-table{border-collapse:collapse;width:100%;font-size:14px}.user-table thead{background:var(--bg-secondary)}.user-table th{text-align:left;color:var(--text-secondary);border-bottom:1px solid var(--border-secondary);padding:14px 20px;font-size:13px;font-weight:600}.user-table td{color:var(--text-primary);border-bottom:1px solid var(--border-secondary);padding:14px 20px}.user-table tbody tr:last-child td{border-bottom:none}.user-table tbody tr:hover{background:var(--bg-card-hover)}.user-table .admin-badge{vertical-align:middle}.modal-overlay{background:var(--bg-overlay);z-index:100;justify-content:center;align-items:center;animation:.15s fadeIn;display:flex;position:fixed;inset:0}.modal,.modal-content{background:var(--bg-card);border-radius:var(--radius);box-shadow:var(--shadow-lg);width:90vw;max-width:480px;max-height:90vh;padding:28px;animation:.2s slideUp;overflow-y:auto}.modal h3,.modal-content h3{color:var(--text-primary);margin-bottom:8px;font-size:18px;font-weight:600}.modal p,.modal-content p{color:var(--text-secondary);margin-bottom:16px;font-size:14px}.app-grid{grid-template-columns:repeat(5,1fr);gap:20px;display:grid}.app-card{background:var(--bg-card);border:1px solid var(--border-secondary);border-radius:var(--radius);transition:var(--transition);cursor:pointer;align-items:center;gap:14px;padding:20px 16px;display:flex}.app-card:hover:not(.disabled){border-color:var(--accent);box-shadow:var(--shadow-md);transform:translateY(-3px)}.app-card.disabled{opacity:.45;cursor:not-allowed}.app-card-icon{background:var(--accent-light);border-radius:12px;flex-shrink:0;justify-content:center;align-items:center;width:48px;height:48px;display:flex}.app-card-info{flex:1;min-width:0}.app-card-name{color:var(--text-primary);font-size:15px;font-weight:600}.app-card-desc{color:var(--text-secondary);font-size:12px;line-height:1.4}.app-card-tags{flex-wrap:wrap;gap:6px;margin-top:auto;display:flex}.app-card-tag{color:var(--accent);background:var(--accent-light);border-radius:var(--radius-full);white-space:nowrap;padding:2px 8px;font-size:11px;font-weight:500}.app-card-coming{color:var(--text-muted);font-size:11px;font-style:italic}.app-card-left{flex-direction:column;flex-shrink:0;align-items:center;gap:8px;min-width:64px;display:flex}.app-card-right{flex-direction:column;flex:1;justify-content:space-between;gap:6px;min-width:0;min-height:70px;display:flex}.app-card-actions{align-items:center;gap:8px;margin-top:4px;display:flex}.app-docs{max-width:720px}.app-docs h3{color:var(--text-primary);margin-bottom:8px;font-size:18px}.docs-section{margin-bottom:24px}.docs-section h4{color:var(--text-primary);margin-bottom:8px;font-size:14px;font-weight:600}.code-block{background:var(--bg-secondary);border:1px solid var(--border-secondary);border-radius:var(--radius-xs);white-space:pre;color:var(--text-primary);padding:14px 18px;font-family:Fira Code,Consolas,monospace;font-size:13px;line-height:1.6;overflow-x:auto}.docs-table{border-collapse:collapse;width:100%;font-size:13px}.docs-table th,.docs-table td{text-align:left;border-bottom:1px solid var(--border-secondary);padding:10px 14px}.docs-table th{color:var(--text-primary);background:var(--bg-secondary);font-weight:600}.docs-table td code{background:var(--accent-light);color:var(--accent);border-radius:4px;padding:2px 6px;font-size:12px}.app-detail{max-width:600px}.detail-info{background:var(--bg-card);border:1px solid var(--border-secondary);border-radius:var(--radius);margin-bottom:24px;padding:20px}.detail-row{border-bottom:1px solid var(--border-secondary);justify-content:space-between;padding:8px 0;font-size:14px;display:flex}.detail-row:last-child{border-bottom:none}.detail-row span{color:var(--text-secondary)}.detail-row strong{color:var(--text-primary)}.detail-desc{background:var(--bg-card);border:1px solid var(--border-secondary);border-radius:var(--radius);padding:20px}.detail-desc h4{color:var(--text-primary);margin-bottom:12px;font-size:15px}.detail-desc p{color:var(--text-secondary);margin-bottom:12px;font-size:14px;line-height:1.6}.detail-desc ul{padding:0;list-style:none}.detail-desc li{color:var(--text-secondary);padding:4px 0 4px 18px;font-size:14px;position:relative}.detail-desc li:before{content:"•";color:var(--accent);position:absolute;left:0}.device-switcher{align-items:center;gap:8px;display:flex}.device-switcher label{color:var(--text-secondary);white-space:nowrap;font-size:13px}.device-switcher .form-input{min-width:180px}.category-tabs{border-bottom:1px solid var(--border-secondary);gap:4px;margin-bottom:20px;padding-bottom:0;display:flex}.category-tab{color:var(--text-secondary);cursor:pointer;transition:var(--transition-fast);background:0 0;border:none;border-bottom:2px solid #0000;padding:8px 16px;font-size:14px;font-weight:500}.category-tab:hover{color:var(--text-primary)}.category-tab.active{color:var(--accent);border-bottom-color:var(--accent)}.toggle-switch{cursor:pointer;width:40px;height:22px;display:inline-block;position:relative}.toggle-switch input{opacity:0;width:0;height:0}.toggle-slider{background:var(--border-primary);transition:var(--transition-fast);border-radius:11px;position:absolute;inset:0}.toggle-slider:before{content:"";width:16px;height:16px;transition:var(--transition-fast);background:#fff;border-radius:50%;position:absolute;bottom:3px;left:3px}.toggle-switch input:checked+.toggle-slider{background:var(--accent)}.toggle-switch input:checked+.toggle-slider:before{transform:translate(18px)}.album-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px;display:grid}.album-card{background:var(--bg-card);border:1px solid var(--border-secondary);border-radius:var(--radius);transition:var(--transition);padding:20px}.album-card:hover{border-color:var(--border-primary);box-shadow:var(--shadow-sm)}.album-card.active{border-color:var(--accent);background:var(--accent-light)}.album-card-header{justify-content:space-between;align-items:center;margin-bottom:8px;display:flex}.album-card-name{color:var(--text-primary);font-size:16px;font-weight:600}.album-card-meta{color:var(--text-secondary);gap:8px;margin-bottom:8px;font-size:13px;display:flex}.album-card-device{color:var(--text-muted);margin-bottom:12px;font-size:12px}.album-card-actions{gap:8px;display:flex}.ppt-editor{background:var(--bg-card);border-radius:var(--radius);width:92vw;max-width:1100px;height:80vh;box-shadow:var(--shadow-lg);flex-direction:column;animation:.2s slideUp;display:flex;overflow:hidden}.ppt-editor-header{border-bottom:1px solid var(--border-secondary);flex-shrink:0;justify-content:space-between;align-items:center;padding:16px 24px;display:flex}.ppt-editor-header h3{color:var(--text-primary);margin:0;font-size:17px;font-weight:600}.modal-close{cursor:pointer;color:var(--text-secondary);border-radius:var(--radius-xs);transition:var(--transition-fast);background:0 0;border:none;padding:4px 8px;font-size:24px}.modal-close:hover{background:var(--bg-secondary);color:var(--text-primary)}.ppt-editor-body{flex:1;min-height:0;display:flex}.ppt-filmstrip{border-right:1px solid var(--border-secondary);background:var(--bg-secondary);flex-direction:column;flex-shrink:0;width:160px;display:flex}.filmstrip-list{flex-direction:column;flex:1;gap:8px;padding:12px 10px;display:flex;overflow-y:auto}.filmstrip-item{border-radius:var(--radius-xs);cursor:pointer;transition:var(--transition-fast);border:2px solid #0000;padding:4px}.filmstrip-item:hover{background:var(--bg-card);border-color:var(--border-primary)}.filmstrip-item.active{border-color:var(--accent);background:var(--accent-light)}.filmstrip-item.dragging{opacity:.5}.filmstrip-item img{aspect-ratio:4/3;object-fit:cover;border-radius:4px;width:100%;display:block}.filmstrip-upload{cursor:pointer;border-radius:var(--radius-xs);flex-shrink:0;justify-content:center;align-items:center;gap:6px;margin:8px 10px 10px;padding:10px;font-size:13px;display:flex}.ppt-preview{flex-direction:column;flex:1;min-width:0;padding:16px 20px;display:flex;overflow-y:auto}.preview-header{flex-shrink:0;justify-content:space-between;align-items:center;margin-bottom:12px;display:flex}.preview-header span{color:var(--text-secondary);font-size:13px;font-weight:500}.preview-main{background:var(--bg-secondary);border-radius:var(--radius);border:1px solid var(--border-secondary);flex:1;justify-content:center;align-items:center;min-height:0;display:flex;overflow:hidden}.preview-original{object-fit:contain;max-width:100%;max-height:100%}.preview-label{color:var(--text-muted);text-align:center;flex-shrink:0;margin-top:8px;font-size:11px;display:block}.preview-empty{color:var(--text-muted);flex-direction:column;flex:1;justify-content:center;align-items:center;display:flex}.preview-empty p{color:var(--text-muted);margin-top:8px}.ppt-settings{border-left:1px solid var(--border-secondary);flex-direction:column;flex-shrink:0;width:220px;padding:20px 16px;display:flex;overflow-y:auto}.ppt-settings-divider{background:var(--border-secondary);height:1px;margin:16px 0}.ppt-settings-info{flex-direction:column;gap:8px;margin-bottom:16px;display:flex}.info-row{justify-content:space-between;font-size:13px;display:flex}.info-row span{color:var(--text-secondary)}.info-row strong{color:var(--text-primary)}.ppt-settings-actions{flex-direction:column;gap:8px;margin-top:auto;display:flex}.app-page{max-width:960px}.app-page-header{align-items:center;gap:16px;margin-bottom:24px;display:flex}.app-page-header h2{color:var(--text-primary);font-size:24px;font-weight:700}.btn-back{border:1px solid var(--border-primary);border-radius:var(--radius-xs);color:var(--text-secondary);font-size:14px;font-family:var(--font);cursor:pointer;transition:var(--transition-fast);background:0 0;align-items:center;gap:6px;padding:8px 14px;display:inline-flex}.btn-back:hover{background:var(--bg-secondary);color:var(--text-primary)}.door-sign-container{grid-template-columns:1fr 1fr;gap:24px;padding:20px 0;display:grid}.door-sign-preview h3,.door-sign-manage h3{color:var(--text-primary);margin:0 0 16px;font-size:16px}.door-sign-screen{aspect-ratio:400/300;border:2px solid var(--border-primary);border-radius:var(--radius-sm);background:#fff;justify-content:center;align-items:center;width:100%;display:flex;overflow:hidden}.door-sign-screen img{object-fit:contain;width:100%;height:100%;image-rendering:pixelated}.door-sign-placeholder{color:var(--text-muted);font-size:14px}.door-sign-hint{color:var(--text-muted);margin:8px 0 0;font-size:12px}.door-sign-add{gap:8px;margin-bottom:16px;display:flex}.door-sign-add input{border:1px solid var(--border-primary);border-radius:var(--radius-xs);transition:border-color var(--transition-fast);outline:none;flex:1;padding:8px 12px;font-size:14px}.door-sign-add input:focus{border-color:var(--accent)}.door-sign-add button{background:var(--accent);color:#fff;border-radius:var(--radius-xs);cursor:pointer;white-space:nowrap;border:none;padding:8px 16px;font-size:14px}.door-sign-add button:disabled{opacity:.5;cursor:not-allowed}.door-sign-list{flex-direction:column;gap:8px;max-height:300px;display:flex;overflow-y:auto}.door-sign-empty{text-align:center;color:var(--text-muted);padding:24px;font-size:14px}.door-sign-item{background:var(--bg-secondary);border:1px solid var(--border-primary);border-radius:var(--radius-xs);cursor:pointer;transition:all var(--transition-fast);justify-content:space-between;align-items:center;padding:10px 14px;display:flex}.door-sign-item:hover{border-color:var(--accent);background:var(--bg-primary)}.door-sign-item.active{border-color:var(--accent);background:var(--accent-light,#c47b4714)}.door-sign-item-text{color:var(--text-primary);font-size:15px;font-weight:500}.door-sign-item-actions{gap:6px;display:flex}.door-sign-item-actions .btn-sm{border-radius:var(--radius-xs);cursor:pointer;transition:opacity var(--transition-fast);border:none;padding:4px 10px;font-size:12px}.door-sign-item-actions .btn-sm:hover{opacity:.85}.door-sign-item-actions .btn-sm.btn-accent{background:var(--accent);color:#fff}.door-sign-item-actions .btn-sm.btn-danger{background:var(--danger,#e53e3e);color:#fff}.door-sign-save{width:100%;margin-top:20px;padding:12px;font-size:15px}@media (width<=768px){.door-sign-container{grid-template-columns:1fr}}