:root{--tg-blue: #0088cc;--tg-dark-blue: #006ba3;--tg-light-blue: #e8f5fd;--bg-primary: #ffffff;--bg-secondary: #f4f4f5;--bg-chat: #e5ddd5;--text-primary: #000000;--text-secondary: #707579;--text-muted: #aaaaaa;--border-color: #dadce0;--message-out: #dcf8c6;--message-in: #ffffff;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .08);--shadow-md: 0 2px 8px rgba(0, 0, 0, .12);--shadow-lg: 0 4px 16px rgba(0, 0, 0, .15)}*{box-sizing:border-box;margin:0;padding:0}html,body{height:100%;overflow:hidden;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#app{height:100vh;display:grid;grid-template-columns:380px 1fr;background:var(--bg-secondary)}.sidebar{background:var(--bg-primary);border-right:1px solid var(--border-color);display:flex;flex-direction:column;height:100vh}.sidebar-header{padding:12px 16px;border-bottom:1px solid var(--border-color);display:flex;align-items:center;gap:12px}.menu-btn{width:40px;height:40px;border:none;background:transparent;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;color:var(--text-secondary);font-size:20px;transition:all .2s}.menu-btn:hover{background:var(--bg-secondary)}.search-wrapper{flex:1;position:relative;display:flex;align-items:center;gap:8px}.search-action-btn{width:36px;height:36px;border:none;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:18px;transition:all .2s;flex-shrink:0}.search-action-btn:hover{transform:scale(1.05);box-shadow:var(--shadow-md)}.search-results{position:absolute;top:calc(100% + 8px);left:0;right:0;background:var(--bg-primary);border:1px solid 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#0c121c0a}.contact:hover{transform:translateY(-2px);box-shadow:0 10px 26px #0c121c0f}.contact.active{background:linear-gradient(180deg,#fff,#fbfdff);border-left:4px solid var(--tg-blue);box-shadow:0 12px 30px #667eea0f}.contact.active{background:var(--tg-light-blue);border-left:3px solid var(--tg-blue)}.avatar-sm{width:56px;height:56px;border-radius:50%;overflow:visible;flex-shrink:0;background:linear-gradient(135deg,#667eea,#764ba2);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:600;font-size:18px;position:relative;border:3px solid rgba(255,255,255,.9);box-shadow:0 6px 20px #08101c0f}.avatar-sm 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24px;text-align:center;position:relative;overflow:hidden}.payment-header:before{content:"";position:absolute;top:-50%;right:-50%;width:200%;height:200%;background:radial-gradient(circle,rgba(255,255,255,.1) 0%,transparent 70%);animation:float 6s ease-in-out infinite}.payment-header i{font-size:36px;margin-bottom:12px;display:block;position:relative;z-index:1}.payment-header h2{font-size:22px;font-weight:700;margin:0 0 8px;position:relative;z-index:1}.payment-header p{font-size:14px;opacity:.9;margin:0;position:relative;z-index:1}.payment-content{padding:24px;overflow-y:auto;flex:1;max-height:70vh}.payment-info{background:#f9fafb;border-radius:12px;padding:16px;margin-bottom:24px;border:1px solid var(--border-color)}.payment-item{display:flex;justify-content:space-between;align-items:center;padding:12px 0;font-size:14px;color:var(--text-primary)}.payment-item span:last-child{font-weight:600;color:#667eea}.payment-divider{height:1px;background:var(--border-color);margin:12px 0}.payment-item.total{padding-top:16px;font-size:16px;font-weight:700}.payment-item.total span:last-child{font-size:18px;background:linear-gradient(135deg,#667eea,#764ba2);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.payment-form{display:flex;flex-direction:column;gap:16px}.card-element{border:2px solid var(--border-color);border-radius:8px;padding:12px;background:#fff;transition:all .3s ease}.card-element:focus{border-color:#667eea;box-shadow:0 0 0 3px #667eea1a}.payment-input{border:2px solid var(--border-color);border-radius:8px;padding:12px 16px;font-size:14px;font-family:inherit;transition:all .3s ease}.payment-input:focus{outline:none;border-color:#667eea;box-shadow:0 0 0 3px #667eea1a}.payment-btn{margin-top:8px;gap:8px;font-size:14px;padding:12px 24px;transition:all .3s ease;position:relative;overflow:hidden}.payment-btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 12px 24px #667eea66}.payment-btn:disabled{opacity:.6;cursor:not-allowed}.payment-btn.loading{pointer-events:none}.payment-btn.loading span{display:none}.payment-btn.loading:after{content:"";display:inline-block;width:16px;height:16px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .6s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.card-error{color:#ff6b6b;font-size:13px;margin-top:-12px;display:none}.card-error.show{display:block}.payment-secure{font-size:12px;color:var(--text-secondary);text-align:center;margin:12px 0 0;display:flex;align-items:center;justify-content:center;gap:6px}.payment-secure i{font-size:11px;color:#51cf66}@media(max-width:600px){.payment-modal{width:90%;max-width:100%}.payment-header{padding:24px 16px}.payment-header i{font-size:28px}.payment-header h2{font-size:18px}.payment-content{padding:16px;max-height:60vh}.payment-info{padding:12px}.payment-item{padding:10px 0;font-size:13px}.payment-form{gap:12px}.payment-input,.card-element{font-size:13px;padding:10px 12px}}