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32px;gap:40px;position:relative;z-index:1}.header-container,.header-left{display:flex;align-items:center}.header-left{gap:24px;flex-shrink:0}.menu-button{display:flex;align-items:center;justify-content:center;width:48px;height:48px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);border-radius:16px;cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1);position:relative;overflow:hidden}.menu-button:before{content:"";position:absolute;inset:0;background:linear-gradient(45deg,rgba(255,255,255,.1),rgba(255,255,255,.05));opacity:0;transition:opacity .3s ease}.menu-button:hover:before{opacity:1}.menu-button:hover{background:rgba(255,255,255,.15);border-color:rgba(255,255,255,.2);transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,0,0,.2)}.menu-button:active{transform:translateY(0)}.menu-burger{display:flex;flex-direction:column;gap:4px;width:22px;height:18px}.menu-burger 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ease;display:flex;align-items:center;justify-content:center}.search-clear:hover{background:rgba(255,255,255,.2);color:#f1f5f9;transform:scale(1.1)}.search-clear svg{width:14px;height:14px}.suggestions-dropdown{position:absolute;top:calc(100% + 12px);left:0;right:0;background:rgba(255,255,255,.95);border:1px solid rgba(0,0,0,.1);border-radius:20px;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);box-shadow:0 20px 60px rgba(0,0,0,.15);overflow:hidden;z-index:1001;animation:slideDown .3s cubic-bezier(.4,0,.2,1)}.modern-header.dark .suggestions-dropdown{background:rgba(30,41,59,.95);border-color:rgba(255,255,255,.1)}@keyframes slideDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.suggestions-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px 12px;border-bottom:1px solid rgba(0,0,0,.06)}.modern-header.dark .suggestions-header{border-bottom-color:rgba(255,255,255,.1)}.suggestions-header span{font-size:14px;font-weight:600;color:#475569}.modern-header.dark .suggestions-header span{color:#cbd5e1}.suggestions-count{background:linear-gradient(135deg,#60a5fa,#3b82f6);color:white;font-size:11px;font-weight:600;padding:4px 8px;border-radius:8px}.suggestions-list{max-height:400px;overflow-y:auto;padding:8px 0}.suggestion-item{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;cursor:pointer;transition:all .2s cubic-bezier(.4,0,.2,1);border-left:4px solid transparent}.suggestion-item:hover{background:rgba(96,165,250,.08);border-left-color:#60a5fa;transform:translateX(4px)}.modern-header.dark .suggestion-item:hover{background:rgba(96,165,250,.15)}.suggestion-content{display:flex;align-items:center;gap:16px}.teacher-avatar{width:40px;height:40px;background:linear-gradient(135deg,#60a5fa,#3b82f6);border-radius:12px;display:flex;align-items:center;justify-content:center;color:white;font-weight:600;font-size:16px;box-shadow:0 4px 12px 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(max-width:768px){.modern-header{height:70px}.header-container{padding:0 20px;gap:16px}.header-center{margin:0 16px}.search-input{font-size:16px;height:48px;padding:0 48px}.search-icon-wrapper{left:16px}.search-clear{right:16px}.user-details{display:none}.user-profile{padding:8px}.logo-text{font-size:28px}.logo-badge{display:none}.action-button{width:40px;height:40px}}@media (max-width:480px){.header-container{padding:0 16px;gap:12px}.header-center{margin:0 12px}.menu-button{width:44px;height:44px}.avatar-image{width:36px;height:36px;font-size:14px}.suggestions-dropdown{margin-top:8px;border-radius:16px}.suggestion-item{padding:10px 16px}.teacher-avatar{width:36px;height:36px;font-size:14px}}.suggestions-list::-webkit-scrollbar{width:6px}.suggestions-list::-webkit-scrollbar-track{background:rgba(0,0,0,.05)}.suggestions-list::-webkit-scrollbar-thumb{background:rgba(96,165,250,.3);border-radius:3px}.suggestions-list::-webkit-scrollbar-thumb:hover{background:rgba(96,165,250,.5)}.action-button:focus,.menu-button:focus,.user-profile:focus{outline:2px solid #60a5fa;outline-offset:2px}.search-input:focus{outline:none}