.site-header {
    background: rgba(18, 18, 18, 0.7);
    backdrop-filter: blur(15px) saturate(180%);
    -webkit-backdrop-filter: blur(15px) saturate(180%);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: var(--transition);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px var(--container-padding);
    max-width: 1400px;
    margin: 0 auto;
}

.logo a {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: white;
    font-size: 1.6rem;
    font-weight: 700;
    transition: var(--transition);
}

.logo i {
    color: var(--secondary-color);
    margin-left: 12px;
    font-size: 2.2rem;
    filter: drop-shadow(0 0 5px rgba(255, 152, 0, 0.3));
}

.logo strong {
    color: var(--secondary-color);
    font-weight: 800;
}

.logo a:hover {
    transform: translateY(-2px);
}

.main-nav {
    display: flex;
    align-items: center;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 5px;
}

.nav-link {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    padding: 12px 20px;
    border-radius: 30px;
    transition: var(--transition);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    position: relative;
    overflow: hidden;
}

.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 152, 0, 0.1), rgba(26, 115, 232, 0.1));
    border-radius: 30px;
    z-index: -1;
    opacity: 0;
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: white;
    transform: translateY(-2px);
}

.nav-link:hover::before,
.nav-link.active::before {
    opacity: 1;
}

.nav-link.active {
    background: rgba(255, 152, 0, 0.15);
    box-shadow: 0 4px 15px rgba(255, 152, 0, 0.2);
}

.nav-link i {
    font-size: 1.1rem;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.btn-secondary {
    background: linear-gradient(135deg, var(--secondary-color), #ff6b00);
    color: white;
    border: none;
    border-radius: 30px;
    padding: 12px 25px;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(255, 152, 0, 0.3);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-secondary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #ff6b00, var(--secondary-color));
    border-radius: 30px;
    z-index: -1;
    opacity: 0;
    transition: var(--transition);
}

.btn-secondary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(255, 152, 0, 0.4);
}

.btn-secondary:hover::before {
    opacity: 1;
}

/* دکمه منوی موبایل - طراحی مدرن */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 50px;
    height: 50px;
    background: rgba(255, 152, 0, 0.1);
    border-radius: 12px;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid rgba(255, 152, 0, 0.2);
    position: relative;
    z-index: 1001;
}

.mobile-menu-btn:hover {
    background: rgba(255, 152, 0, 0.2);
    transform: scale(1.05);
}

.mobile-menu-btn span {
    display: block;
    height: 3px;
    width: 25px;
    background-color: var(--secondary-color);
    border-radius: 3px;
    transition: var(--transition);
    position: absolute;
}

.mobile-menu-btn span:nth-child(1) {
    transform: translateY(-8px);
}

.mobile-menu-btn span:nth-child(2) {
    opacity: 1;
}

.mobile-menu-btn span:nth-child(3) {
    transform: translateY(8px);
}

/* منوی موبایل - باز شدن از سمت چپ */
.mobile-nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.mobile-nav-overlay.active {
    opacity: 1;
    visibility: visible;
}

.mobile-nav {
    position: fixed;
    top: 0;
    left: -100%;
    width: 85%;
    max-width: 350px;
    height: 100vh;
    background: rgba(30, 30, 30, 0.95);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-right: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 10px 0 40px rgba(0, 0, 0, 0.5);
    z-index: 1000;
    padding: 100px 25px 40px;
    transition: left 0.4s cubic-bezier(0.68, -0.55, 0.27, 1.55);
    overflow-y: auto;
}

.mobile-nav.active {
    left: 0;
}

.mobile-nav-header {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    padding: 20px 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(26, 115, 232, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.mobile-nav-logo {
    display: flex;
    align-items: center;
    color: white;
    font-size: 1.4rem;
    font-weight: 700;
    text-decoration: none;
}

.mobile-nav-logo i {
    color: var(--secondary-color);
    margin-left: 10px;
    font-size: 1.8rem;
}

.mobile-nav-close {
    background: rgba(255, 152, 0, 0.1);
    border: 1px solid rgba(255, 152, 0, 0.2);
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
}

.mobile-nav-close:hover {
    background: rgba(255, 152, 0, 0.2);
    transform: rotate(90deg);
}

.mobile-nav-close i {
    color: var(--secondary-color);
    font-size: 1.5rem;
}

.mobile-nav-list {
    list-style: none;
    margin-top: 20px;
}

.mobile-nav-item {
    margin-bottom: 10px;
}

.mobile-nav-link {
    display: flex;
    align-items: center;
    padding: 18px 20px;
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    border-radius: 12px;
    transition: var(--transition);
    font-weight: 500;
    gap: 15px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid transparent;
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
    background: rgba(255, 152, 0, 0.1);
    color: white;
    border-color: rgba(255, 152, 0, 0.2);
    transform: translateX(5px);
    box-shadow: 0 5px 15px rgba(255, 152, 0, 0.1);
}

.mobile-nav-link i {
    width: 24px;
    font-size: 1.2rem;
    color: var(--secondary-color);
}

.mobile-nav-link.active i {
    color: white;
}

.mobile-nav-actions {
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.mobile-nav-actions .btn {
    width: 100%;
    margin-bottom: 15px;
    justify-content: center;
}

/* حالت فعال برای دکمه منو */
.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

@media (max-width: 1100px) {
    .nav-list {
        gap: 0;
    }
    
    .nav-link {
        padding: 10px 15px;
        font-size: 0.95rem;
    }
}

@media (max-width: 1300px) {
    .main-nav {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .btn-secondary {
        display: none;
    }
}

.mobile-nav.active {
    left: 0;
}

.mobile-nav-overlay.active {
    opacity: 1;
    visibility: visible;
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

@media (max-width: 576px) {
    .header-container {
        padding: 8px var(--container-padding);
    }
    
    .logo a {
        font-size: 1.3rem;
    }
    
    .logo i {
        font-size: 1.6rem;
    }
    
    .mobile-menu-btn {
        width: 45px;
        height: 45px;
    }
    
    .mobile-nav {
        width: 90%;
        padding: 90px 20px 30px;
    }
}