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12px}}:root{--color-primary:#4f46e5;--color-primary-dark:#4338ca;--color-primary-light:#ede9fe;--color-primary-muted:#a5b4fc;--color-bg:#f0f2f5;--color-surface:#fff;--color-surface-2:#f8fafc;--color-border:#e2e8f0;--color-text:#1e293b;--color-text-muted:#64748b;--color-text-light:#94a3b8;--color-online:#22c55e;--color-offline:#cbd5e1;--color-error:#ef4444;--color-warning:#f59e0b;--bubble-own-bg:var(--color-primary);--bubble-own-text:#fff;--bubble-other-bg:#f1f5f9;--bubble-other-text:var(--color-text);--sidebar-width:280px;--header-height:56px;--radius-sm:6px;--radius-md:10px;--radius-lg:18px;--radius-full:9999px;--shadow-sm:0 1px 3px #00000014;--shadow-md:0 4px 16px #0000001a;--shadow-lg:0 8px 32px #0000001f;--transition:.15s ease;--transition-slide:.25s ease}.chat-page{background:var(--color-bg);height:100vh;display:flex;overflow:hidden}.chat-panel{flex-direction:column;flex:1;min-width:0;height:100%;display:flex}.chat-panel-header{height:var(--header-height);background:var(--color-surface);border-bottom:1px solid var(--color-border);flex-shrink:0;align-items:center;gap:12px;padding:0 20px;display:flex}.chat-panel-header .avatar{width:34px;height:34px;font-size:.8rem}.chat-panel-name{color:var(--color-text);font-size:.95rem;font-weight:700}.chat-panel-status{color:var(--color-text-muted);font-size:.78rem}.chat-panel-status.online{color:var(--color-online)}.no-conversation{color:var(--color-text-muted);flex-direction:column;flex:1;justify-content:center;align-items:center;gap:12px;display:flex}.no-conversation-icon{opacity:.3;font-size:3rem}.no-conversation p{font-size:.95rem}.message-list{flex-direction:column;flex:1;gap:4px;padding:16px 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.chat-panel{transition:transform var(--transition-slide);z-index:1;position:absolute;inset:0;transform:translate(100%)}.chat-page.show-chat .sidebar{transform:translate(-100%)}.chat-page.show-chat .chat-panel{transform:translate(0)}.message-bubble-inner{max-width:85%}.message-input-area{padding:10px 12px;padding-bottom:max(10px, env(safe-area-inset-bottom))}.message-input-area input{padding:12px 16px;font-size:1rem}.send-btn{width:44px;height:44px}}