.chat-area{flex:1;display:flex;flex-direction:column;height:100vh;height:100dvh;height:var(--app-height,100dvh);overflow:hidden;overflow-x:hidden;position:relative;min-width:0;max-width:100vw}
.welcome-screen{flex:1;display:flex;align-items:center;justify-content:center}
.welcome-content{text-align:center;color:var(--text-secondary)}
.welcome-icon{font-size:80px;filter:drop-shadow(0 0 30px var(--accent))}
.welcome-content h2{font-size:28px;color:var(--accent);margin-bottom:8px}
.active-chat{display:flex;flex-direction:column;height:100vh;height:100dvh;height:var(--app-height,100dvh);position:relative;overflow:hidden;overflow-x:hidden;max-width:100vw}
.chat-header{display:flex;align-items:center;gap:12px;padding:12px 16px;background:var(--bg-secondary);border-bottom:1px solid var(--border);flex-shrink:0;z-index:5}
.back-btn{display:none;background:none;border:none;color:var(--accent);font-size:22px;cursor:pointer;padding:4px 8px}
.chat-header-info{flex:1;display:flex;align-items:center;gap:12px;cursor:pointer;min-width:0}
.chat-avatar-wrapper{position:relative;flex-shrink:0}
.chat-header-avatar{width:40px;height:40px;border-radius:50%;object-fit:cover;background:var(--bg-tertiary)}
.online-dot{position:absolute;bottom:0;right:0;width:10px;height:10px;background:var(--success);border-radius:50%;border:2px solid var(--bg-secondary)}
.chat-header-title{font-size:16px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.chat-header-status{font-size:12px;color:var(--text-secondary)}
.chat-header-actions{display:flex;gap:4px;flex-shrink:0}
.messages-container{flex:1;overflow-y:auto;overflow-x:hidden;padding:16px 16px 8px;background:var(--bg-primary);overscroll-behavior-x:none;-webkit-overflow-scrolling:touch;max-width:100%}
.messages-list{display:flex;flex-direction:column;gap:4px;overflow-x:hidden;max-width:100%}
.message-wrapper{display:flex;flex-direction:column;max-width:75%;min-width:0;position:relative;margin-bottom:4px}
.message-wrapper.outgoing{align-self:flex-end;align-items:flex-end}
.message-wrapper.incoming{align-self:flex-start;align-items:flex-start}
.message-sender-name{font-size:12px;color:var(--accent);font-weight:600;margin-bottom:2px;padding:0 12px}
.message-bubble{padding:8px 12px;position:relative}
.message-wrapper.outgoing .message-bubble{background:var(--bg-message-out);border-radius:18px 18px 4px 18px;color:white}
.message-wrapper.incoming .message-bubble{background:var(--bg-message-in);border-radius:18px 18px 18px 4px;color:var(--text-primary);border:1px solid var(--border)}
.message-wrapper .sticker-message,.message-wrapper .message-image,.message-wrapper .message-video{margin:0;display:block}
.msg-text{white-space:pre-wrap;word-break:break-word}
.msg-text a{color:#a78bfa;text-decoration:underline;word-break:break-all}
.message-meta{display:flex;align-items:center;gap:4px;margin-top:2px;padding:0 4px;font-size:11px;color:var(--text-muted)}
.message-edited{font-style:italic}
.message-reply-bubble{display:flex;background:rgba(0,0,0,.15);border-radius:10px;margin-bottom:6px;cursor:pointer;overflow:hidden}
.reply-bubble-line{width:3px;background:var(--accent);flex-shrink:0;border-radius:2px}
.reply-bubble-content{display:flex;flex-direction:column;padding:6px 10px;min-width:0}
.reply-bubble-name{font-size:12px;font-weight:700;color:var(--accent);margin-bottom:2px}
.reply-bubble-text{font-size:12px;color:rgba(255,255,255,.7);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:200px}
.reply-sticker{width:40px;height:40px;object-fit:contain;border-radius:4px}
.message-reactions{display:flex;flex-wrap:wrap;gap:4px;margin-top:4px}
.reaction-badge{background:var(--bg-secondary);border:1px solid var(--border);border-radius:12px;padding:2px 8px;font-size:13px;cursor:pointer;transition:all .15s;display:flex;align-items:center;gap:3px;color:var(--text-primary);user-select:none}
.reaction-badge:hover{background:var(--bg-tertiary);transform:scale(1.05)}
.reaction-picker{position:fixed;display:flex;gap:2px;background:var(--bg-secondary);border:1px solid var(--border);border-radius:30px;padding:6px 10px;box-shadow:0 8px 30px rgba(0,0,0,.5);z-index:2000}
.reaction-picker-btn{background:none;border:none;font-size:22px;cursor:pointer;padding:4px 5px;border-radius:50%;transition:transform .15s,background .15s;line-height:1}
.reaction-picker-btn:hover{transform:scale(1.4);background:var(--bg-tertiary)}
/* Hover reaction bar for images/stickers on desktop */
.hover-reaction-bar{position:absolute;display:flex;gap:2px;background:var(--bg-secondary);border:1px solid var(--border);border-radius:20px;padding:4px 8px;box-shadow:0 4px 20px rgba(0,0,0,.5);z-index:100;opacity:0;transition:opacity .2s;pointer-events:none;white-space:nowrap}
.message-wrapper:hover .hover-reaction-bar{opacity:1;pointer-events:auto}
.hover-reaction-bar button{background:none;border:none;font-size:18px;cursor:pointer;padding:2px 4px;border-radius:50%;transition:transform .15s;line-height:1}
.hover-reaction-bar button:hover{transform:scale(1.3)}
.delete-menu{position:fixed;background:var(--bg-secondary);border:1px solid var(--border);border-radius:14px;z-index:2000;box-shadow:0 8px 30px rgba(0,0,0,.5);overflow:hidden;min-width:180px}
.delete-menu-btn{display:block;width:100%;padding:13px 18px;background:none;border:none;border-bottom:1px solid var(--border);text-align:left;cursor:pointer;font-size:14px;color:var(--text-primary);transition:background .15s;font-family:inherit}
.delete-menu-btn:last-child{border-bottom:none}
.delete-menu-btn:hover{background:var(--bg-tertiary)}
.delete-menu-btn.danger{color:var(--danger)}
.message-image{max-width:280px;max-height:320px;border-radius:12px;object-fit:cover;cursor:pointer}
.message-video{max-width:300px;max-height:360px;border-radius:12px;background:#000}
.sticker-message{width:140px;height:140px;object-fit:contain}
.voice-message-wrap{display:flex;align-items:center;gap:10px;padding:4px 2px;min-width:180px;max-width:260px}
.voice-play-btn{width:42px;height:42px;border-radius:50%;border:none;background:var(--accent);color:white;cursor:pointer;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.voice-waveform{display:flex;align-items:center;gap:2px;height:28px}
.wave-bar{width:3px;border-radius:2px;background:rgba(255,255,255,.3);flex-shrink:0;min-height:3px}
.voice-duration{font-size:11px;color:rgba(255,255,255,.6)}
.message-file{display:flex;align-items:center;gap:12px;padding:4px 0;cursor:pointer;min-width:180px;max-width:260px}
.file-icon-wrap{width:42px;height:42px;background:rgba(176,110,243,.2);border-radius:12px;display:flex;flex-direction:column;align-items:center;justify-content:center;flex-shrink:0}
.file-icon{font-size:20px}.file-ext{font-size:9px;font-weight:700;color:var(--accent);text-transform:uppercase}
.file-info{flex:1;min-width:0}
.file-name{font-size:13px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.file-size{font-size:11px;color:rgba(255,255,255,.6);margin-top:2px}
.message-input-area{display:flex;align-items:flex-end;gap:8px;padding:12px;background:var(--bg-secondary);border-top:1px solid var(--border);position:relative;z-index:40;flex-shrink:0;width:100%;max-width:100%;overflow:visible}
.attach-btn{background:none;border:none;cursor:pointer;font-size:20px;padding:8px;border-radius:50%;transition:background .2s;flex-shrink:0;color:var(--text-secondary);line-height:1}
.attach-btn:hover{background:var(--bg-tertiary)}
.attach-menu{position:absolute;bottom:70px;left:12px;background:var(--bg-secondary);border:1px solid var(--border);border-radius:14px;z-index:100;box-shadow:0 8px 30px var(--shadow);min-width:200px}
.attach-item{display:flex;align-items:center;gap:10px;padding:13px 18px;cursor:pointer;font-size:14px;color:var(--text-primary);transition:background .15s}
.attach-item:hover{background:var(--bg-tertiary)}
.message-input{flex:1;background:var(--bg-tertiary);border:1px solid var(--border);border-radius:20px;padding:10px 16px;color:var(--text-primary);font-size:15px;outline:none;resize:none;max-height:120px;line-height:1.45;transition:border-color .2s;font-family:inherit}
.message-input:focus{border-color:var(--accent)}
.send-btn{background:linear-gradient(135deg,var(--accent),var(--accent-hover));border:none;border-radius:50%;width:42px;height:42px;cursor:pointer;color:white;transition:all .2s;flex-shrink:0;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 10px rgba(176,110,243,.4)}
.voice-btn{background:var(--bg-tertiary);border:1px solid var(--border);border-radius:50%;width:42px;height:42px;font-size:18px;cursor:pointer;transition:all .2s;flex-shrink:0;display:flex;align-items:center;justify-content:center;color:var(--text-primary)}
.voice-btn.recording{background:var(--danger)!important;border-color:var(--danger)!important;animation:recPulse 1s infinite}
@keyframes recPulse{0%,100%{box-shadow:0 0 0 0 rgba(239,68,68,.4)}50%{box-shadow:0 0 0 8px rgba(239,68,68,0)}}
.reply-preview,.edit-preview{display:flex;align-items:center;gap:10px;padding:8px 16px;background:var(--bg-secondary);border-top:1px solid var(--border)}
.reply-bar{width:3px;height:36px;background:var(--accent);border-radius:2px;flex-shrink:0}
.reply-content{flex:1;min-width:0}
.reply-name{font-size:12px;font-weight:700;color:var(--accent);display:block;margin-bottom:2px}
.cancel-reply{background:none;border:none;color:var(--text-muted);cursor:pointer;font-size:18px;padding:4px 8px;border-radius:6px;flex-shrink:0}
.cancel-reply:hover{color:var(--text-primary);background:var(--bg-tertiary)}
.voice-record-bar{display:flex;align-items:center;justify-content:space-between;padding:10px 16px;background:var(--bg-secondary);border-top:1px solid var(--border)}
.voice-record-info{display:flex;align-items:center;gap:10px;color:var(--danger);min-width:0;flex:1}
.voice-record-info span{font-size:14px;font-weight:600}
.voice-record-actions{display:flex;gap:8px;flex-shrink:0}
.voice-record-btn{width:42px;height:42px;border-radius:50%;border:none;font-size:20px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s}
.voice-record-btn.cancel{background:var(--bg-tertiary);color:var(--text-primary)}
.voice-record-btn.stop{background:rgba(239,68,68,.16);color:var(--danger);border:1px solid rgba(239,68,68,.35);font-size:16px}
.voice-record-btn.stop:hover{background:rgba(239,68,68,.25)}
.voice-record-btn.send{background:var(--accent);color:white}
.voice-preview{display:flex;align-items:center;gap:8px;background:var(--bg-tertiary);border:1px solid var(--border);border-radius:18px;padding:4px 10px;color:var(--text-primary);min-width:120px}
.voice-preview-play{width:28px;height:28px;border-radius:50%;border:none;background:var(--accent);color:white;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:13px}
#voice-status{color:var(--text-primary);font-weight:600}
.sticker-picker{position:absolute;bottom:70px;right:12px;width:320px;max-height:380px;background:var(--bg-secondary);border:1px solid var(--border);border-radius:16px;z-index:100;box-shadow:0 8px 30px var(--shadow);display:flex;flex-direction:column}
.sticker-header{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;border-bottom:1px solid var(--border);font-weight:600;font-size:14px}
.sticker-content{overflow-y:auto;padding:12px;flex:1}
.sticker-pack-name{font-size:11px;color:var(--text-secondary);margin-bottom:8px;font-weight:600;text-transform:uppercase;letter-spacing:.5px}
.stickers-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin-bottom:16px}
.sticker-item{cursor:pointer;border-radius:10px;padding:6px;transition:background .15s;aspect-ratio:1;display:flex;align-items:center;justify-content:center}
.sticker-item:hover{background:var(--bg-tertiary)}
.sticker-item img{width:60px;height:60px;object-fit:contain}
.typing-indicator{height:20px;padding:4px 0;font-size:12px;color:var(--accent);font-style:italic}
.post-bubble{min-width:190px;overflow:visible}.post-bubble .msg-image-wrap,.post-bubble .message-image,.post-bubble .message-video{max-width:min(420px,70vw)}.post-bubble .sticker-message{width:160px;height:160px}
.post-meta-footer{display:flex;justify-content:space-between;align-items:center;margin-top:8px;padding-top:8px;border-top:1px solid rgba(255,255,255,.1);font-size:13px;gap:16px}
.post-comments-btn{background:none;border:none;color:var(--accent);cursor:pointer;font-weight:600;white-space:nowrap}
.post-comments-btn:hover{text-decoration:underline}
.post-reaction-menu{position:fixed;left:var(--reaction-left,8px);top:var(--reaction-top,8px);display:flex;gap:2px;background:var(--bg-secondary);border:1px solid var(--border);border-radius:24px;padding:5px 8px;box-shadow:0 8px 24px rgba(0,0,0,.45);opacity:0;transform:translateY(6px) scale(.98);pointer-events:none;transition:opacity .16s,transform .16s;z-index:3000;white-space:nowrap}
.post-bubble:hover .post-reaction-menu,.post-bubble.show-reactions .post-reaction-menu{opacity:1;transform:translateY(0) scale(1);pointer-events:auto}
.post-reaction-menu button{background:none;border:none;font-size:20px;cursor:pointer;padding:3px 5px;border-radius:50%;line-height:1;transition:transform .15s,background .15s}
.post-reaction-menu button:hover{transform:scale(1.28);background:var(--bg-tertiary)}
.post-reactions{display:flex;flex-wrap:wrap;gap:4px;margin-top:6px}
.post-reaction-badge{background:rgba(176,110,243,.15);border:1px solid var(--border);border-radius:12px;padding:2px 8px;font-size:13px;cursor:pointer;transition:all .15s;display:flex;align-items:center;gap:3px;color:var(--text-primary);user-select:none}
.post-reaction-badge:hover{background:var(--bg-tertiary);transform:scale(1.05)}
@media(max-width:768px){
.back-btn{display:block}.message-wrapper{max-width:88%}.sticker-picker{width:calc(100vw - 24px);right:12px;left:12px}.chat-area,.active-chat{width:100vw;max-width:100vw}.messages-container{padding:12px 10px 6px}.message-input-area{position:relative;bottom:auto;left:auto;right:auto;padding:8px 10px calc(8px + env(safe-area-inset-bottom));gap:6px;background:var(--bg-secondary);box-shadow:0 -2px 12px rgba(0,0,0,.25)}.message-input{min-height:40px;max-height:96px;font-size:16px;border-radius:18px;padding:9px 12px}.attach-btn,.send-btn,.voice-btn{width:40px;height:40px;min-width:40px;padding:0;display:flex;align-items:center;justify-content:center}.message-image{max-width:min(280px,82vw)}.message-video{max-width:min(300px,82vw)}.post-bubble .msg-image-wrap,.post-bubble .message-image,.post-bubble .message-video{max-width:min(360px,82vw)}
}