:root{--bg-color:#ffffff;--text-color:#333333;--header-bg:#ffffff;--header-border:#eeeeee;--linenum-bg:#f9f9f9;--linenum-color:#cccccc;--linenum-border:#eeeeee;--badge-bg:#f0f0f0;--badge-text:#666666;--btn-hover:#f5f5f5;--footer-text:#999999;--footer-bg:#ffffff;--modal-bg:#ffffff;--modal-overlay:rgba(0,0,0,0.5)}
body.dark-mode{--bg-color:#1e1e1e;--text-color:#e0e0e0;--header-bg:#252526;--header-border:#333333;--linenum-bg:#252526;--linenum-color:#555555;--linenum-border:#333333;--badge-bg:#333333;--badge-text:#aaaaaa;--btn-hover:#333333;--footer-text:#666666;--footer-bg:#252526;--modal-bg:#252526;--modal-overlay:rgba(0,0,0,0.7)}
html,body{height:100vh;width:100%;margin:0;padding:0;overflow:hidden;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;background-color:var(--bg-color);color:var(--text-color)}
.wrapper{height:100%;width:100%;display:flex;flex-direction:column}
.header{padding:0 15px;height:50px;flex-shrink:0;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--header-border);background:var(--header-bg);box-sizing:border-box}
.address-bar-area{display:flex;align-items:center;font-size:14px;cursor:pointer;flex:1;min-width:0;margin-right:10px}
.address-bar-area a{color:var(--text-color);text-decoration:none;font-weight:bold;white-space:nowrap}
.address-bar-area .sep{margin:0 8px;flex-shrink:0}
.address-bar-area .note-id-text{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.url-copy-btn{background:transparent;border:1px solid var(--linenum-color);border-radius:4px;color:var(--text-color);cursor:pointer;padding:2px 4px;display:flex;align-items:center}
.url-copy-btn:hover{background:var(--btn-hover)}
.url-copy-btn svg{width:12px;height:12px}
.user-count-badge{background:var(--badge-bg);color:var(--badge-text);padding:2px 8px;border-radius:12px;font-size:11px;display:flex;align-items:center;margin-left:8px;white-space:nowrap;flex-shrink:0}
.user-count-icon{width:6px;height:6px;border-radius:50%;margin-right:5px;background:#f44336;flex-shrink:0}
.user-count-badge.connected .user-count-icon{background:#4caf50}
.menu-tools{display:flex;gap:5px;align-items:center}
.abutton{background:none;border:1px solid transparent;cursor:pointer;color:var(--badge-text);padding:6px 8px;border-radius:4px;display:flex;align-items:center;justify-content:center}
.abutton:hover{color:var(--text-color);background:var(--btn-hover)}
.abutton svg{width:18px;height:18px;display:block;flex-shrink:0}
.abutton.disabled{color:#ccc;cursor:not-allowed}
.btn-label{display:none}
#mobileMenuBtn{display:none;padding:6px;background:none;border:none;cursor:pointer;color:var(--text-color)}
#mobileMenuBtn svg{width:24px;height:24px}
#btnMode .mode-icon-single{display:inline}
#btnMode .mode-icon-multi{display:none}
#btnMode.multi .mode-icon-single{display:none}
#btnMode.multi .mode-icon-multi{display:inline}
#btnBurn .icon-burn-open{display:inline}
#btnBurn .icon-burn-closed{display:none}
#btnBurn.active .icon-burn-open{display:none}
#btnBurn.active .icon-burn-closed{display:inline}
#btnSeal .icon-seal-open{display:inline}
#btnSeal .icon-seal-closed{display:none}
#btnSeal.active .icon-seal-open{display:none}
#btnSeal.active .icon-seal-closed{display:inline}
.tool-dropdown-wrapper{position:relative}
.dropdown-menu{position:absolute;top:100%;right:0;margin-top:5px;background:var(--modal-bg);border:1px solid var(--header-border);border-radius:6px;box-shadow:0 4px 12px rgba(0,0,0,0.15);display:none;flex-direction:column;z-index:2000;min-width:100px}
.dropdown-menu::before{content:'';position:absolute;top:-10px;left:0;right:0;height:10px}
.tool-dropdown-wrapper:hover .dropdown-menu{display:flex}
.dropdown-item{padding:8px 15px;cursor:pointer;font-size:13px;color:var(--text-color);text-align:left;border-bottom:1px solid var(--header-border);white-space:nowrap}
.dropdown-item:last-child{border-bottom:none}
.dropdown-item:hover{background:var(--btn-hover)}
.tooltip-wrapper{position:relative;display:inline-flex;align-items:center;justify-content:center}
.tooltip-content{visibility:hidden;background-color:#333;color:#fff;text-align:center;border-radius:4px;padding:5px 8px;position:absolute;z-index:2000;top:130%;left:50%;transform:translateX(-50%);opacity:0;transition:opacity 0.2s;font-size:10px;white-space:nowrap;pointer-events:none;box-shadow:0 4px 6px rgba(0,0,0,0.3)}
.tooltip-content::after{content:"";position:absolute;bottom:100%;left:50%;margin-left:-4px;border-width:4px;border-style:solid;border-color:transparent transparent #333 transparent}
.tooltip-wrapper:hover .tooltip-content{visibility:visible;opacity:1}
.editor-wrapper{flex:1;display:flex;flex-direction:column;overflow:hidden;position:relative}
#textarea-container{flex:1;display:flex;position:relative;height:100%}
.notice-bar{width:100%;padding:8px 15px;text-align:center;font-size:12px;font-weight:bold;display:none;flex-shrink:0;line-height:1.4;box-sizing:border-box}
.notice-burn{background-color:#ffebee;color:#c62828;border-bottom:1px solid #ffcdd2;background-image:repeating-linear-gradient(45deg,transparent,transparent 10px,rgba(255,255,255,0.5) 10px,rgba(255,255,255,0.5) 20px)}
.notice-seal{background-color:#fffde7;color:#f57f17;border-bottom:1px solid #fff9c4;background-image:repeating-linear-gradient(45deg,transparent,transparent 10px,rgba(255,255,255,0.5) 10px,rgba(255,255,255,0.5) 20px)}
#save-status{opacity:0;transition:opacity 0.5s;color:#999;font-size:10px;position:absolute;top:5px;right:15px;z-index:10;pointer-events:none;background:rgba(255,255,255,0.9);padding:2px 6px;border-radius:4px;white-space:nowrap}
body.dark-mode #save-status{background:rgba(30,30,30,0.9)}
#save-status.show{opacity:1}
#line-numbers{width:50px;background:var(--linenum-bg);border-right:1px solid var(--linenum-border);text-align:right;padding:4px 5px 4px 0;color:var(--linenum-color);font-family:'Consolas',monospace;font-size:16px;line-height:1.6;overflow:hidden;user-select:none;flex-shrink:0}
#contenttext{flex:1;border:none;resize:none;outline:none;padding:4px 10px;font-size:16px;line-height:1.6;font-family:'Consolas',monospace;color:var(--text-color);background:var(--bg-color);white-space:pre;overflow-x:auto}
body.readonly-mode #contenttext{color:#555}
#contenttext.bg-burn{background-image:repeating-linear-gradient(45deg,rgba(255,71,87,0.05) 0px,rgba(255,71,87,0.05) 20px,transparent 20px,transparent 40px)}
#contenttext.bg-seal{background-image:repeating-linear-gradient(45deg,rgba(255,159,67,0.08) 0px,rgba(255,159,67,0.08) 20px,transparent 20px,transparent 40px)}
body.dark-mode #contenttext.bg-burn{background-image:repeating-linear-gradient(45deg,rgba(255,71,87,0.15) 0px,rgba(255,71,87,0.15) 20px,transparent 20px,transparent 40px)}
body.dark-mode #contenttext.bg-seal{background-image:repeating-linear-gradient(45deg,rgba(255,159,67,0.15) 0px,rgba(255,159,67,0.15) 20px,transparent 20px,transparent 40px)}
.footer{flex-shrink:0;height:auto;min-height:30px;border-top:1px solid var(--header-border);display:flex;align-items:center;justify-content:center;flex-wrap:wrap;font-size:11px;color:var(--footer-text);background:var(--footer-bg);overflow:hidden;padding:4px 0}
.footer a{color: var(--text-color); text-decoration: none;}
.footer span{cursor:pointer;}
.ad-container{display:block;width:100%;flex-basis:100%;margin:5px auto 0;text-align:center;min-height:0;overflow:hidden}
.dialog-overlay,.modal-overlay,.burn-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,0.5);z-index:10001;display:none;justify-content:center;align-items:center}
.burn-overlay{background:rgba(30,30,30,0.98);z-index:9999;flex-direction:column;color:#fff;text-align:center}
.dialog-box,.modal-box{background:var(--modal-bg);color:var(--text-color);padding:20px;border-radius:8px;width:300px;box-shadow:0 4px 12px rgba(0,0,0,0.2);text-align:center;position:relative}
.burn-box{background:#2d2d2d;padding:30px;border-radius:8px;box-shadow:0 10px 25px rgba(0,0,0,0.5);border:1px solid #ff4757;max-width:90%;width:350px}
.modal-close{position:absolute;top:10px;right:15px;cursor:pointer;font-size:20px}
.modal-title{font-weight:bold;margin-bottom:15px;font-size:18px;border-bottom:1px solid var(--header-border);padding-bottom:10px}
.history-list{list-style:none;padding:0;margin:0;text-align:left}
.history-item{padding:8px 0;border-bottom:1px solid var(--header-border)}
.history-item a{color:var(--text-color);text-decoration:none}
.dialog-buttons{display:flex;justify-content:center;gap:10px;margin-top:20px}
.dialog-btn{padding:6px 15px;border:1px solid #ccc;background:transparent;border-radius:4px;cursor:pointer;color:inherit}
.dialog-btn.primary{background:#2196f3;color:white;border:none}
.burn-btn{background:#ff4757;color:white;border:none;padding:10px 20px;font-size:14px;border-radius:4px;cursor:pointer;margin-top:15px;width:100%;box-sizing:border-box}
.burn-btn.secondary{background:transparent;border:1px solid #666;color:#ccc;margin-top:10px}
.help-container { padding: 5px 0; text-align: left; font-size: 13px; line-height: 1.6; }
.help-group { margin-bottom: 15px; }
.help-group:last-child { margin-bottom: 0; }
.help-head { font-weight: bold; border-bottom: 1px solid var(--header-border, #eee); margin-bottom: 6px; padding-bottom: 2px; color: var(--text-color); }
.help-list { margin: 0; padding-left: 20px; color: var(--footer-text, #666); }
.help-list li { margin-bottom: 4px; }
body.dark-mode .help-list { color: #aaa; }
#toast{visibility:hidden;min-width:200px;background-color:#333;color:#fff;text-align:center;border-radius:4px;padding:10px 15px;position:fixed;z-index:10000;left:50%;top:60px;transform:translateX(-50%);font-size:13px;box-shadow:0 4px 12px rgba(0,0,0,0.15)}
#toast.show{visibility:visible;animation:fadein 0.5s,fadeout 0.5s 2.5s}
@keyframes fadein{from{top:40px;opacity:0}
to{top:60px;opacity:1}}
@keyframes fadeout{from{top:60px;opacity:1}
to{top:40px;opacity:0}}
@media (max-width:600px){.header{padding:0 10px}
.address-bar-area{font-size:13px}
#mobileMenuBtn{display:block}
.menu-tools{display:none;position:absolute;top:50px;right:0;width:180px;background:var(--modal-bg);border:1px solid var(--header-border);box-shadow:0 4px 12px rgba(0,0,0,0.15);flex-direction:column;padding:5px 0;z-index:3000}
.menu-tools.show{display:flex}
.tooltip-wrapper{width:100%;display:block}
.abutton{width:100%;justify-content:flex-start;padding:12px 15px;box-sizing:border-box;font-size:14px}
.abutton svg{margin-right:12px}
.btn-label{display:inline-block}
.tooltip-content{display:none !important}}