.language-modal-overlay{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:9999;background-color:#000000b3;justify-content:center;align-items:center;padding:16px;display:flex;position:fixed;inset:0}.language-modal-content{background-color:#2d2d2d;border:2px solid #4a4a4a;border-radius:16px;flex-direction:column;width:100%;max-width:500px;height:600px;max-height:calc(100vh - 32px);display:flex;overflow:hidden;box-shadow:0 25px 50px -12px #00000080}.language-modal-header{border-bottom:1px solid #4a4a4a;flex-shrink:0;padding:16px}.language-modal-header-row{justify-content:space-between;align-items:center;margin-bottom:12px;display:flex}.language-modal-title{color:#fff;margin:0;font-size:20px;font-weight:700}.language-modal-close{color:#9ca3af;cursor:pointer;background:0 0;border:none;border-radius:8px;justify-content:center;align-items:center;padding:6px;transition:all .15s;display:flex}.language-modal-close:hover{color:#fff;background-color:#3a3a3a}.language-search-input{color:#fff;box-sizing:border-box;background-color:#1a1a1a;border:1px solid #4a4a4a;border-radius:8px;outline:none;width:100%;padding:10px 16px;font-size:14px}.language-search-input::placeholder{color:#6b7280}.language-list{flex:1;min-height:0;overflow-y:auto}.country-section{border-bottom:1px solid #3a3a3a}.country-header{background-color:#252525;align-items:center;gap:10px;padding:10px 16px;display:flex}.country-flag{flex-shrink:0}.country-name{color:#e0e0e0;font-size:14px;font-weight:600}.language-item{text-align:left;cursor:pointer;color:#fff;background:0 0;border:none;align-items:center;gap:12px;width:100%;padding:10px 16px 10px 52px;transition:background-color .15s;display:flex}.language-item:hover{background-color:#3a3a3a}.language-item.selected,.language-item.selected:hover{background-color:#282828}.language-item.selected .language-native-name{color:#fff}.language-item.selected .language-english-name{color:#aaa}.language-item-text{flex:1;min-width:0}.language-native-name{font-size:14px;font-weight:500}.language-english-name{color:#9ca3af;font-size:12px}.language-no-results{text-align:center;color:#9ca3af;padding:48px 16px;font-size:14px}.signup-modal-overlay{background-color:var(--overlay-bg);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:9999;justify-content:center;align-items:center;padding:16px;display:flex;position:fixed;inset:0}.signup-modal-content{background-color:var(--sidebar-bg);border:1px solid var(--border-color);width:100%;max-width:440px;box-shadow:0 25px 50px -12px var(--shadow-color);border-radius:16px;transition:background-color .3s,border-color .3s;overflow:hidden}.signup-modal-header{padding:24px 24px 0}.signup-modal-header-row{justify-content:space-between;align-items:center;margin-bottom:16px;display:flex}.signup-modal-title{color:var(--sidebar-text);margin:0;font-size:24px;font-weight:700;transition:color .3s}.signup-modal-close{cursor:pointer;width:32px;height:32px;color:var(--gray-medium);background:0 0;border:none;border-radius:8px;justify-content:center;align-items:center;transition:all .15s;display:flex}.signup-modal-close:hover{background-color:var(--button-hover-bg);color:var(--sidebar-text)}.signup-modal-body{padding:0 24px 24px}.confirm-modal-overlay{background-color:var(--overlay-bg);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:9999;justify-content:center;align-items:center;padding:16px;display:flex;position:fixed;inset:0}.confirm-modal-content{background-color:var(--background);box-shadow:0 25px 50px -12px var(--shadow-color);border-radius:16px;width:100%;max-width:400px;padding:24px;transition:background-color .3s}.confirm-modal-title{color:var(--foreground);margin:0 0 12px;font-size:20px;font-weight:700;transition:color .3s}.confirm-modal-message{color:var(--gray-dark);margin-bottom:24px;font-size:14px;line-height:1.5;transition:color .3s}.confirm-modal-buttons{justify-content:flex-end;gap:12px;display:flex}.confirm-modal-btn{cursor:pointer;border:2px solid;border-radius:8px;padding:10px 20px;font-size:14px;font-weight:500;transition:all .15s}.confirm-modal-btn.cancel{background-color:var(--background);color:var(--gray-dark);border-color:var(--border-color)}.confirm-modal-btn.cancel:hover{background-color:var(--button-hover-bg);border-color:var(--gray-medium)}.confirm-modal-btn.confirm{background-color:var(--sidebar-bg);color:var(--sidebar-text);border-color:var(--sidebar-bg)}.confirm-modal-btn.confirm:hover{background-color:var(--button-hover-bg)}.confirm-modal-btn.confirm.danger{background-color:#dc2626;border-color:#dc2626}.confirm-modal-btn.confirm.danger:hover{background-color:#b91c1c}.session-menu-dropdown{z-index:9999;background-color:#fff;border:1px solid #ddd;border-radius:.5rem;min-width:160px;position:fixed;overflow:hidden;box-shadow:0 20px 25px -5px #0000001a}.dark .session-menu-dropdown{background-color:#1a1a1a;border:1px solid #333}.session-menu-item{text-align:left;cursor:pointer;color:#000;background:0 0;border:none;align-items:center;gap:8px;width:100%;padding:12px 16px;font-size:14px;transition:background-color .2s;display:flex}.dark .session-menu-item{color:#fff}.session-menu-item:hover{background-color:#e5e5e5}.dark .session-menu-item:hover{background-color:#2d2d2d}.session-menu-item.delete{color:#dc2626}.dark .session-menu-item.delete{color:#f87171}.session-menu-item.delete:hover{background-color:#fef2f2}.dark .session-menu-item.delete:hover{background-color:#f871711a}.chat-input-container{-webkit-tap-highlight-color:transparent;z-index:10;background-color:#f9f9f9;border-top:1px solid #eee;align-items:center;padding:15px;transition:background-color .3s,border-color .3s;display:flex;position:relative}.dark .chat-input-container{background-color:#1a1a1a;border-top:1px solid #333}.chat-input-textarea{border:1px solid var(--input-border);resize:none;color:#000;appearance:none;-webkit-tap-highlight-color:transparent;background:#fff;border-radius:20px;outline:none;flex:1;order:1;min-height:48px;max-height:72px;padding:12px 16px;font-family:inherit;font-size:1rem;line-height:1.4;transition:height .1s,border-color .2s;overflow-y:hidden}.dark .chat-input-textarea{color:#fff;background:#1a1a1a;border-color:#333}.dark .chat-input-textarea:focus{border-color:#fff}.chat-input-textarea:focus{border-color:var(--foreground)}.chat-input-textarea:disabled{opacity:1;cursor:not-allowed;background-color:#f5f5f5}.dark .chat-input-textarea:disabled{background-color:#0d0d0d}.chat-input-textarea[dir=rtl]{text-align:right;direction:rtl}.chat-input-textarea[dir=ltr]{text-align:left;direction:ltr}.chat-input-button{color:#fff;cursor:pointer;-webkit-tap-highlight-color:transparent;touch-action:manipulation;background-color:#000;border:2px solid #fff;border-radius:20px;order:2;min-width:48px;min-height:48px;margin:0 15px;padding:12px 24px;font-weight:500;transition:background-color .2s}.chat-input-button:hover,.dark .chat-input-button:hover{background-color:#333}.chat-input-button:disabled{cursor:not-allowed}.chat-input-button.streaming{opacity:.5;background-color:#666}.dark .chat-input-button.streaming{opacity:.6;background-color:#333}@media (max-width:768px){.chat-input-container{height:calc(80px + env(safe-area-inset-bottom,0));min-height:calc(80px + env(safe-area-inset-bottom,0));padding:15px 12px;padding-bottom:calc(15px + env(safe-area-inset-bottom,0));z-index:10;flex:none;position:relative;transform:translateZ(0)}.chat-input-textarea{-webkit-appearance:none;-webkit-user-modify:read-write-plaintext-only;z-index:1000;-webkit-tap-highlight-color:#fff0;border-radius:25px;min-height:50px;max-height:60px;padding:14px 18px;font-size:16px;position:relative}.chat-input-button{-webkit-tap-highlight-color:transparent;touch-action:manipulation;border-radius:25px;min-width:80px;min-height:50px;padding:14px 20px;font-size:14px}}