:root{--bg-primary:#f8f6f1;--bg-secondary:#fff;--bg-tertiary:#f0ece4;--text-primary:#2c2520;--text-secondary:#6b5e52;--text-muted:#9b8f83;--accent:#c9a96e;--accent-hover:#b8943d;--accent-light:#f5eedd;--border:#e8e0d4;--shadow-sm:0 1px 3px #2c25200f;--shadow-md:0 4px 12px #2c252014;--shadow-lg:0 8px 30px #2c25201f;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--chat-bg:#efe8dc;--chat-sent:#c9a96e;--chat-sent-text:#fff;--chat-received:#fff;--chat-received-text:#2c2520;--chat-input-bg:#fff;--online-color:#4caf50}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;overflow-x:hidden}button{cursor:pointer;background:0 0;border:none;font-family:inherit}input,textarea{border:none;outline:none;font-family:inherit}a{color:inherit;text-decoration:none}ul{list-style:none}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.app{max-width:100vw;min-height:100vh;position:relative}.library-view{min-height:100vh;animation:.3s fadeIn}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.library-header{background:var(--bg-secondary);border-bottom:1px solid var(--border);z-index:100;padding:16px 20px;position:sticky;top:0}.header-top{justify-content:space-between;align-items:center;margin-bottom:16px;display:flex}.logo{align-items:center;gap:10px;display:flex}.logo-icon{background:var(--accent);border-radius:var(--radius-sm);color:#fff;justify-content:center;align-items:center;width:36px;height:36px;display:flex}.logo h1{color:var(--text-primary);font-family:Playfair Display,serif;font-size:22px;font-weight:600}.header-actions{gap:8px;display:flex}.icon-btn{width:40px;height:40px;color:var(--text-secondary);border-radius:50%;justify-content:center;align-items:center;transition:all .2s;display:flex}.icon-btn:hover{background:var(--bg-tertiary);color:var(--text-primary)}.search-container{position:relative}.search-bar{background:var(--bg-tertiary);border-radius:var(--radius-md);width:100%;color:var(--text-primary);padding:12px 16px 12px 44px;font-size:15px;transition:all .2s}.search-bar::placeholder{color:var(--text-muted)}.search-bar:focus{background:var(--bg-secondary);box-shadow:0 0 0 2px var(--accent)}.search-icon{color:var(--text-muted);pointer-events:none;position:absolute;top:50%;left:14px;transform:translateY(-50%)}.tabs{background:var(--bg-secondary);gap:4px;padding:12px 20px 0;display:flex}.tab{color:var(--text-muted);border-bottom:2px solid #0000;padding:10px 20px;font-size:14px;font-weight:500;transition:all .2s}.tab:hover{color:var(--text-secondary)}.tab.active{color:var(--accent);border-bottom-color:var(--accent)}.section-header{justify-content:space-between;align-items:center;padding:24px 20px 12px;display:flex}.section-header h2{font-family:Playfair Display,serif;font-size:20px;font-weight:600}.see-all{color:var(--accent);font-size:14px;font-weight:500}.see-all:hover{color:var(--accent-hover)}.book-scroll{scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;gap:16px;padding:8px 20px 20px;display:flex;overflow-x:auto}.book-scroll::-webkit-scrollbar{display:none}.book-card{scroll-snap-align:start;cursor:pointer;flex:0 0 140px;transition:transform .2s}.book-card:hover{transform:translateY(-4px)}.book-cover{border-radius:var(--radius-md);width:140px;height:200px;box-shadow:var(--shadow-md);margin-bottom:10px;position:relative;overflow:hidden}.book-cover img{object-fit:cover;width:100%;height:100%}.book-cover-placeholder{text-align:center;color:#fff;flex-direction:column;justify-content:center;align-items:center;width:100%;height:100%;padding:16px;font-size:12px;font-weight:600;line-height:1.3;display:flex}.book-rating{color:#ffc107;background:#000000b3;border-radius:12px;align-items:center;gap:3px;padding:2px 8px;font-size:12px;font-weight:600;display:flex;position:absolute;bottom:8px;right:8px}.book-title{color:var(--text-primary);white-space:nowrap;text-overflow:ellipsis;margin-bottom:2px;font-size:14px;font-weight:600;overflow:hidden}.book-author{color:var(--text-muted);white-space:nowrap;text-overflow:ellipsis;font-size:12px;overflow:hidden}.book-grid{grid-template-columns:repeat(3,1fr);gap:16px;padding:8px 20px 20px;display:grid}.book-grid .book-card{flex:unset}.book-grid .book-cover{width:100%;height:160px}.progress-bar-container{background:#ffffff4d;border-radius:2px;width:100%;height:4px;margin-top:8px;overflow:hidden}.progress-bar-fill{background:#fff;border-radius:2px;height:100%;transition:width .3s}.currently-reading{background:linear-gradient(135deg, var(--accent), #a0844a);border-radius:var(--radius-lg);color:#fff;align-items:center;gap:16px;margin:0 20px;padding:20px;display:flex}.currently-reading-cover{border-radius:var(--radius-sm);flex-shrink:0;width:70px;height:100px;overflow:hidden;box-shadow:0 4px 12px #0003}.currently-reading-cover img{object-fit:cover;width:100%;height:100%}.currently-reading-cover .book-cover-placeholder{font-size:10px}.currently-reading-info{flex:1;min-width:0}.currently-reading-info h3{white-space:nowrap;text-overflow:ellipsis;margin-bottom:4px;font-size:16px;font-weight:600;overflow:hidden}.currently-reading-info p{opacity:.85;margin-bottom:4px;font-size:13px}.currently-reading-info .progress-text{opacity:.7;font-size:12px}.bottom-nav{background:var(--bg-secondary);border-top:1px solid var(--border);padding:8px 0;padding-bottom:max(8px, env(safe-area-inset-bottom));z-index:100;justify-content:space-around;display:flex;position:fixed;bottom:0;left:0;right:0}.nav-item{color:var(--text-muted);flex-direction:column;align-items:center;gap:4px;padding:4px 12px;font-size:11px;font-weight:500;transition:color .2s;display:flex}.nav-item.active{color:var(--accent)}.nav-item:hover{color:var(--text-secondary)}.chat-view{background:var(--chat-bg);flex-direction:column;height:100vh;animation:.3s fadeIn;display:flex}.chat-header{background:var(--bg-secondary);border-bottom:1px solid var(--border);flex-shrink:0;align-items:center;gap:12px;padding:12px 16px;display:flex}.chat-back-btn{color:var(--accent);justify-content:center;align-items:center;padding:4px;display:flex}.chat-avatar{background:linear-gradient(135deg, var(--accent), #e8c88a);color:#fff;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:40px;height:40px;font-size:16px;font-weight:600;display:flex}.chat-contact-info{flex:1;min-width:0}.chat-contact-name{color:var(--text-primary);font-size:16px;font-weight:600}.chat-contact-status{color:var(--online-color);align-items:center;gap:4px;font-size:12px;display:flex}.chat-contact-status.offline{color:var(--text-muted)}.chat-contact-status .dot{background:var(--online-color);border-radius:50%;width:6px;height:6px;animation:2s infinite pulse;display:inline-block}@keyframes pulse{0%,to{opacity:1}50%{opacity:.4}}.messages-area{flex-direction:column;flex:1;gap:8px;padding:16px;display:flex;overflow-y:auto}.message{word-wrap:break-word;border-radius:18px;max-width:78%;padding:10px 14px;font-size:15px;line-height:1.4;animation:.25s messageIn;position:relative}@keyframes messageIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.message.sent{background:var(--chat-sent);color:var(--chat-sent-text);border-bottom-right-radius:6px;align-self:flex-end}.message.received{background:var(--chat-received);color:var(--chat-received-text);box-shadow:var(--shadow-sm);border-bottom-left-radius:6px;align-self:flex-start}.message-meta{justify-content:flex-end;align-items:center;gap:4px;margin-top:4px;display:flex}.message-time{opacity:.65;font-size:11px}.message-status{opacity:.6;align-items:center;display:flex}.message-status.seen{opacity:1;color:#4fc3f7}.message.sent .message-status.seen{color:#4fc3f7}.message-image{cursor:pointer;border-radius:12px;max-width:240px;max-height:300px;margin-bottom:4px;transition:transform .2s}.message-image:hover{transform:scale(1.02)}.date-separator{text-align:center;padding:8px 0}.date-separator span{color:var(--text-muted);background:#00000014;border-radius:12px;padding:4px 14px;font-size:12px;font-weight:500}.chat-input-area{background:var(--bg-secondary);border-top:1px solid var(--border);padding:10px 12px;padding-bottom:max(10px, env(safe-area-inset-bottom));flex-shrink:0;align-items:flex-end;gap:8px;display:flex}.chat-input-wrapper{background:var(--bg-tertiary);border-radius:24px;flex:1;align-items:center;gap:8px;padding:10px 16px;display:flex}.chat-input{color:var(--text-primary);resize:none;background:0 0;flex:1;max-height:100px;font-size:15px;line-height:1.4}.chat-input::placeholder{color:var(--text-muted)}.emoji-btn,.attach-btn{color:var(--text-muted);flex-shrink:0;justify-content:center;align-items:center;transition:color .2s;display:flex}.emoji-btn:hover,.attach-btn:hover{color:var(--accent)}.send-btn{background:var(--accent);color:#fff;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:44px;height:44px;transition:all .2s;display:flex}.send-btn:hover{background:var(--accent-hover);transform:scale(1.05)}.send-btn:active{transform:scale(.95)}.emoji-picker-overlay{z-index:200;position:fixed;inset:0}.emoji-picker{background:var(--bg-secondary);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);z-index:201;padding:16px;animation:.25s slideUp;position:fixed;bottom:70px;left:12px;right:12px}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.emoji-picker-header{justify-content:space-between;align-items:center;margin-bottom:12px;display:flex}.emoji-picker-header h3{font-size:16px;font-weight:600}.emoji-grid{grid-template-columns:repeat(8,1fr);gap:4px;max-height:200px;display:grid;overflow-y:auto}.emoji-item{border-radius:var(--radius-sm);cursor:pointer;justify-content:center;align-items:center;padding:6px;font-size:24px;transition:background .15s;display:flex}.emoji-item:hover{background:var(--bg-tertiary)}.image-preview-overlay{z-index:300;background:#000000d9;flex-direction:column;justify-content:center;align-items:center;animation:.2s fadeIn;display:flex;position:fixed;inset:0}.image-preview-overlay img{border-radius:var(--radius-md);max-width:90%;max-height:70vh}.image-preview-actions{gap:16px;margin-top:20px;display:flex}.image-preview-actions button{border-radius:24px;padding:12px 32px;font-size:15px;font-weight:600;transition:all .2s}.image-preview-cancel{color:#fff;background:#ffffff26}.image-preview-cancel:hover{background:#ffffff40}.image-preview-send{background:var(--accent);color:#fff}.image-preview-send:hover{background:var(--accent-hover)}.typing-indicator{background:var(--chat-received);box-shadow:var(--shadow-sm);border-radius:18px 18px 18px 6px;align-self:flex-start;gap:4px;padding:12px 18px;display:flex}.typing-dot{background:var(--text-muted);border-radius:50%;width:8px;height:8px;animation:1.4s infinite typingBounce}.typing-dot:nth-child(2){animation-delay:.2s}.typing-dot:nth-child(3){animation-delay:.4s}@keyframes typingBounce{0%,60%,to{transform:translateY(0)}30%{transform:translateY(-6px)}}.empty-chat{color:var(--text-muted);text-align:center;flex-direction:column;flex:1;justify-content:center;align-items:center;gap:12px;padding:40px;display:flex}.empty-chat-icon{background:var(--accent-light);width:80px;height:80px;color:var(--accent);border-radius:50%;justify-content:center;align-items:center;margin-bottom:8px;display:flex}.empty-chat h3{color:var(--text-secondary);font-family:Playfair Display,serif;font-size:20px}.empty-chat p{max-width:240px;font-size:14px}.upload-indicator{background:var(--chat-sent);color:var(--chat-sent-text);opacity:.8;border-radius:18px 18px 6px;align-self:flex-end;align-items:center;gap:8px;padding:10px 18px;font-size:14px;display:flex}.upload-spinner{border:2px solid #ffffff4d;border-top-color:#fff;border-radius:50%;width:16px;height:16px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}@media (width>=768px){.library-view,.chat-view{border-left:1px solid var(--border);border-right:1px solid var(--border);max-width:480px;margin:0 auto}.bottom-nav{max-width:480px;left:50%;transform:translate(-50%)}}