.app-container{display:flex;width:100vw;height:100vh;background-color:#d1d7db;overflow:hidden}.left-panel{flex:1;min-width:300px;background-color:#fff;border-right:1px solid #d1d7db;display:flex;flex-direction:column}.panel-header{height:60px;background-color:#f0f2f5;border-bottom:1px solid #d1d7db;display:flex;align-items:center;padding:0 16px;font-weight:700;color:#41525d}.panel-content{padding:16px;overflow-y:auto}.right-panel{flex:0 0 500px;flex:2;display:flex;justify-content:center;align-items:center;background-color:#d1d7db;padding:20px}.right-panel.preview-container{padding:0;background-color:transparent;flex:1;width:100vw;height:100vh;position:fixed;top:0;left:0;justify-content:stretch;align-items:stretch}.phone-wrapper{width:375px;height:90vh;max-height:850px;background-color:#fff;border-radius:40px;box-shadow:0 20px 50px #00000026;overflow:hidden;position:relative;display:flex;flex-direction:column;border:8px solid #333}.phone-wrapper.preview-mode{border:none;border-radius:0;box-shadow:none;width:100%;height:100%;max-height:none}.phone-screen{flex:1;display:flex;flex-direction:column;background-color:#efeae2;position:relative;overflow:hidden}.whatsapp-header{height:60px;background-color:var(--wa-teal);display:flex;align-items:center;padding:0 10px;color:#fff;z-index:10}.back-arrow{margin-right:8px;font-size:1.2rem;cursor:pointer}.avatar-circle{width:36px;height:36px;border-radius:50%;background-color:#ccc;margin-right:10px}.header-info{display:flex;flex-direction:column}.contact-name{font-weight:600;font-size:16px;line-height:1.2}.contact-status{font-size:12px;opacity:.8}.chat-background{flex:1;overflow-y:auto;background-image:url(https://user-images.githubusercontent.com/15075759/28719144-86dc0f70-73b1-11e7-911d-60d70fcded21.png);background-repeat:repeat;background-size:400px;background-color:var(--wa-light-bg);display:flex;flex-direction:column;padding:10px}.message-list{display:flex;flex-direction:column;gap:8px}.message-bubble{max-width:80%;padding:6px 7px 8px 9px;border-radius:7.5px;box-shadow:0 1px .5px 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#0000001a}.header-left{display:flex;align-items:center;flex:1;overflow:hidden}.header-right{display:flex;align-items:center;gap:15px;padding-right:5px}.header-icon{cursor:pointer;padding:2px}.back-btn{margin-right:5px}.avatar-container{margin-right:10px}.avatar-placeholder{width:38px;height:38px;border-radius:50%;background-color:#cfd8dc}.avatar-img{width:38px;height:38px;border-radius:50%;object-fit:cover}.header-info{display:flex;flex-direction:column;overflow:hidden}.contact-name{font-weight:500;font-size:17px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.contact-status{font-size:13px;opacity:.9;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat-input-bar{min-height:60px;background-color:#f0f2f5;display:flex;align-items:center;padding:5px 10px;gap:10px}.input-icon{color:#54656f;cursor:pointer}.input-wrapper{flex:1;background-color:#fff;min-height:40px;border-radius:20px;display:flex;align-items:center;padding:5px 15px;position:relative}.chat-input-field{flex:1;border:none;outline:none;font-size:16px;background:transparent;padding-right:30px}.sticker-icon{color:#8696a0;cursor:pointer}.send-btn{background-color:var(--wa-teal);color:#fff;border-radius:50%;width:40px;height:40px;border:none;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:18px}.message-bubble{max-width:80%;padding:6px 7px 8px 9px;border-radius:7.5px;box-shadow:0 1px .5px #0b141a21;font-size:14.5px;line-height:19px;color:#111b21;position:relative;margin-bottom:2px;border:2px solid transparent;transition:all .2s 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solid #e9ecef}.highlight-section{background:#e3f2fd;border:1px solid #90caf9}.panel-section h3{margin-bottom:8px;font-size:13px;color:#54656f;text-transform:uppercase;font-weight:700}.gap-2{gap:8px}.mb-2{margin-bottom:8px}.mr-1{margin-right:4px}.flex-1{flex:1}.text-xs{font-size:11px;color:#666;margin-bottom:2px}.text-input,.sender-select,.msg-textarea,.text-input-small{padding:6px 8px;border:1px solid #ddd;border-radius:6px;background:#fff;width:100%}.text-input-small{padding:4px;font-size:13px}.msg-textarea{resize:vertical;margin-bottom:10px}.action-btn{display:flex;align-items:center;justify-content:center;padding:6px;border:none;border-radius:4px;cursor:pointer;font-weight:500;font-size:13px}.save-btn{background:var(--wa-teal);color:#fff}.save-btn:hover{background:var(--wa-teal-dark)}.delete-full-btn{background:#dc3545;color:#fff}.delete-full-btn:hover{background:#bb2d3b}.icon-btn-small{background:transparent;border:none;cursor:pointer;opacity:.6;padding:4px}.icon-btn-small:hover{opacity:1;background:#0000000d;border-radius:4px}.participants-list{display:flex;flex-direction:column;gap:6px;margin-bottom:8px}.participant-item{display:flex;justify-content:space-between;background:#fff;padding:6px;border-radius:6px;border:1px solid #eee}.edit-name-input{border:1px solid transparent;width:100%;padding:2px}.edit-name-input:hover{border-color:#eee}.add-user-row{display:flex;gap:6px}.icon-btn{width:28px;height:28px;border-radius:4px;border:none;display:flex;align-items:center;justify-content:center;cursor:pointer}.add-btn{background:var(--wa-teal);color:#fff}.delete-btn{color:#dc3545;background:#dc35451a}.composer-row{margin-bottom:8px}.composer-row label{font-size:11px;color:#666;display:block;margin-bottom:2px}.send-action-btn{width:100%;padding:8px;background:var(--wa-teal);color:#fff;border:none;border-radius:6px;cursor:pointer;display:flex;align-items:center;justify-content:center}.danger-btn{width:100%;padding:8px;background:#dc3545;color:#fff;border:none;border-radius:6px;cursor:pointer}:root{--wa-teal: #008069;--wa-teal-dark: #005c4b;--wa-light-bg: #efeae2;--wa-panel-header-bg: #f0f2f5;--wa-primary: #00a884;--wa-incoming-bg: #ffffff;--wa-outgoing-bg: #d9fdd3;--wa-message-primary: #111b21;--wa-message-secondary: #667781;--wa-blue-tick: #53bdeb;--wa-gray-tick: #8696a0;--wa-system-message-bg: rgba(225, 245, 254, .92);--wa-input-bg: #ffffff;--app-height: 100vh}*{box-sizing:border-box;margin:0;padding:0;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background-color:#d1d7db;display:flex;justify-content:center;align-items:center;min-height:100vh}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#0003;border-radius:3px}.flex-column{display:flex;flex-direction:column}.flex-row{display:flex;flex-direction:row}.items-center{align-items:center}.justify-between{justify-content:space-between}