.site-header{background:linear-gradient(135deg,var(--secondary-black) 0%,var(--primary-black) 100%);border-bottom:3px solid var(--primary-blue);box-shadow:0 4px 12px rgba(0,0,0,0.5);position:sticky;top:0;z-index:1000;}.header-container{display:flex;justify-content:space-between;align-items:center;padding:15px 0;gap:20px;flex-wrap:nowrap;}.site-logo{display:flex;align-items:center;gap:12px;text-decoration:none;flex-shrink:0;}.logo-icon{width:50px;height:50px;background:linear-gradient(135deg,var(--primary-red),var(--secondary-red));border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:1.5rem;font-weight:700;color:#ffffff;box-shadow:var(--shadow-md);transition:all var(--transition-medium);}.logo-icon:hover{transform:rotate(5deg) scale(1.1);box-shadow:var(--shadow-lg);}.main-nav{flex:1;display:flex;justify-content:center;max-width:600px;}.nav-list{list-style:none;display:flex;gap:5px;align-items:center;}.nav-item{position:relative;}.nav-link{display:flex;align-items:center;gap:8px;padding:12px 20px;font-size:1rem;font-weight:600;color:var(--gray-light);text-decoration:none;border-radius:var(--radius-md);transition:all var(--transition-fast);}.nav-icon{width:16px;height:16px;flex-shrink:0;display:inline-block;}.nav-link:hover,.nav-link.active{color:#ffffff;background:rgba(37,99,235,0.2);}.nav-link::after{content:'';position:absolute;bottom:0;left:50%;width:0;height:3px;background:var(--primary-red);transform:translateX(-50%);transition:width var(--transition-medium);}.nav-link:hover::after,.nav-link.active::after{width:70%;}.user-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}.user-btn{padding:10px 18px;font-size:0.9rem;font-weight:600;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-medium);text-decoration:none;display:inline-block;white-space:nowrap;}.btn-login{background:transparent;color:var(--secondary-blue);border:2px solid var(--secondary-blue);}.btn-login:hover{background:var(--secondary-blue);color:#ffffff;box-shadow:var(--shadow-md);}.btn-register{background:linear-gradient(135deg,var(--primary-red),var(--secondary-red));color:#ffffff;border:none;}.btn-register:hover{background:linear-gradient(135deg,var(--secondary-red),var(--light-red));box-shadow:var(--shadow-lg);transform:translateY(-2px);}.mobile-menu-toggle{display:none;flex-direction:column;gap:5px;background:transparent;border:none;cursor:pointer;padding:8px;}.menu-bar{width:28px;height:3px;background:#ffffff;border-radius:2px;transition:all var(--transition-medium);}.mobile-menu-toggle:hover .menu-bar{background:var(--secondary-blue);}.mobile-menu-toggle.active .menu-bar:nth-child(1){transform:rotate(45deg) translateY(10px);}.mobile-menu-toggle.active .menu-bar:nth-child(2){opacity:0;}.mobile-menu-toggle.active .menu-bar:nth-child(3){transform:rotate(-45deg) translateY(-10px);}@media screen and (max-width:1024px){.header-container{gap:20px;}.nav-link{padding:10px 15px;font-size:0.95rem;}}.auth-modal-overlay{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,0.8);z-index:2000;justify-content:center;align-items:center;animation:fadeIn 0.3s ease;}.auth-modal-overlay.active{display:flex;}.auth-modal{background:linear-gradient(145deg,var(--secondary-black),var(--light-black));border-radius:16px;padding:40px 30px;max-width:400px;width:90%;position:relative;box-shadow:0 20px 60px rgba(0,0,0,0.8);border:1px solid rgba(37,99,235,0.3);animation:slideUp 0.3s ease;}@keyframes fadeIn{from{opacity:0;}to{opacity:1;}}@keyframes slideUp{from{opacity:0;transform:translateY(30px);}to{opacity:1;transform:translateY(0);}}.modal-close-btn{position:absolute;top:15px;right:15px;background:transparent;border:none;color:#94a3b8;font-size:1.5rem;cursor:pointer;width:35px;height:35px;display:flex;align-items:center;justify-content:center;border-radius:50%;transition:all var(--transition-fast);}.modal-close-btn:hover{background:rgba(220,38,38,0.2);color:var(--primary-red);transform:rotate(90deg);}.auth-modal-content{text-align:center;}.auth-title{font-size:2rem;font-weight:700;color:#ffffff;margin-bottom:10px;}.auth-subtitle{font-size:1rem;color:#94a3b8;margin-bottom:30px;}.auth-buttons{display:flex;flex-direction:column;gap:15px;}.auth-btn{display:flex;align-items:center;justify-content:center;gap:12px;padding:15px 25px;border-radius:10px;font-size:1rem;font-weight:600;text-decoration:none;transition:all var(--transition-medium);cursor:pointer;}.auth-btn i{font-size:1.2rem;}.login-btn{background:linear-gradient(135deg,var(--primary-blue),var(--secondary-blue));color:#ffffff;box-shadow:0 4px 15px rgba(37,99,235,0.3);}.login-btn:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(37,99,235,0.4);}.register-btn{background:linear-gradient(135deg,var(--primary-red),var(--secondary-red));color:#ffffff;box-shadow:0 4px 15px rgba(220,38,38,0.3);}.register-btn:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(220,38,38,0.4);}.back-btn{position:absolute;top:15px;left:15px;background:transparent;border:none;color:#94a3b8;font-size:1.3rem;cursor:pointer;width:35px;height:35px;display:flex;align-items:center;justify-content:center;border-radius:50%;transition:all var(--transition-fast);}.back-btn:hover{background:rgba(37,99,235,0.2);color:var(--primary-blue);transform:translateX(-3px);}.auth-form{display:flex;flex-direction:column;gap:20px;}.form-group{display:flex;flex-direction:column;gap:8px;}.form-group label{display:flex;align-items:center;gap:8px;font-size:0.9rem;font-weight:600;color:#cbd5e1;}.form-group label i{font-size:0.9rem;color:var(--primary-blue);}.form-group input{padding:12px 15px;border-radius:8px;border:1px solid rgba(255,255,255,0.1);background:rgba(0,0,0,0.3);color:#ffffff;font-size:0.95rem;transition:all var(--transition-fast);}.form-group input:focus{outline:none;border-color:var(--primary-blue);background:rgba(0,0,0,0.5);box-shadow:0 0 0 3px rgba(37,99,235,0.1);}.form-group input::placeholder{color:#64748b;}.login-submit-btn{background:linear-gradient(135deg,var(--primary-blue),var(--secondary-blue));color:#ffffff;box-shadow:0 4px 15px rgba(37,99,235,0.3);margin-top:10px;}.login-submit-btn:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(37,99,235,0.4);}.register-submit-btn{background:linear-gradient(135deg,var(--primary-red),var(--secondary-red));color:#ffffff;box-shadow:0 4px 15px rgba(220,38,38,0.3);margin-top:10px;}.register-submit-btn:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(220,38,38,0.4);}.mobile-bottom-nav{display:none;}@media screen and (max-width:869px){.mobile-bottom-nav{display:flex;position:fixed;bottom:0;left:0;right:0;background:linear-gradient(180deg,#1a1a1a 0%,#0a0a0a 100%);border-top:1px solid rgba(37,99,235,0.3);box-shadow:0 -4px 12px rgba(0,0,0,0.5);padding:8px 0;z-index:1000;justify-content:space-around;}.mobile-bottom-nav .nav-item{display:flex;flex-direction:column;align-items:center;gap:4px;padding:8px 12px;color:#94a3b8;text-decoration:none;font-size:0.7rem;font-weight:600;text-transform:lowercase;transition:all var(--transition-fast);border-radius:8px;min-width:60px;}.mobile-bottom-nav .nav-item i{font-size:1.3rem;transition:all var(--transition-fast);}.mobile-bottom-nav .nav-item:hover,.mobile-bottom-nav .nav-item.active{color:var(--primary-blue);background:rgba(37,99,235,0.1);}.mobile-bottom-nav .nav-item:hover i,.mobile-bottom-nav .nav-item.active i{transform:scale(1.1);}.page-wrapper{padding-bottom:70px;}}@media screen and (max-width:869px){.header-container{flex-wrap:nowrap;padding:12px 0;gap:15px;}.site-logo{flex:1;}.user-actions{display:none;}.mobile-menu-toggle{display:none;}.main-nav{display:none !important;}.nav-list{flex-direction:column;width:100%;gap:0;padding:10px 0;}.nav-item{width:100%;}.nav-link{width:100%;padding:15px 20px;justify-content:flex-start;}.nav-link::after{display:none;}.logo-icon{width:45px;height:45px;font-size:1.3rem;}}@media screen and (max-width:480px){.header-container{padding:10px 0;}.logo-icon{width:40px;height:40px;font-size:1.2rem;}.nav-link{padding:12px 15px;font-size:0.9rem;}}