.site-header {
    height: var(--header-height);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: transparent;
    border-bottom: 1px solid transparent;
    transition: background-color 0.4s ease, box-shadow 0.4s ease, height 0.4s ease, border-color 0.4s ease;
}

.site-header.scrolled {
    background-color: var(--color-bg);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.07);
    height: 70px;
    border-bottom-color: var(--color-border);
}

.site-header .container, .site-header__inner {
    height: 100%;
}

.site-header__inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-header__logo img {
    height: 40px;
    display: block;
    transition: transform 0.3s ease;
}

.site-header__logo:hover img {
    transform: scale(1.05);
}

.site-header__menu {
    display: flex;
    align-items: center;
    gap: 40px;
}

.site-header__nav ul {
    margin: 0;
    padding: 0;
    list-style: none;
    display: flex;
    align-items: center;
    gap: 30px;
}

.site-header__nav a {
    color: var(--color-text-secondary);
    font-weight: 500;
    font-size: 15px;
    position: relative;
    padding: 10px 0;
    transition: color 0.3s ease;
}

.site-header__nav-icon {
    font-size: 18px;
}

.site-header__nav a::after {
    content: '';
    position: absolute;
    bottom: 5px;
    left: 0;
    width: 100%;
    height: 1.5px;
    background: var(--color-gradient);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform 0.4s cubic-bezier(0.19, 1, 0.22, 1);
}

.site-header__nav a:hover {
    color: var(--color-primary);
}

.site-header__nav a:hover::after {
    transform: scaleX(1);
}

.site-header__actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

.btn-auth {
    padding: 8px 18px;
    font-size: 14px;
    border-radius: 50px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    background-color: var(--color-white);
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
    transition: all 0.3s ease;
}

.btn-cta {
    padding: 8px 18px;
    font-size: 14px;
    border-radius: 50px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    background-image: var(--color-gradient);
    color: var(--color-white);
    border: 1px solid transparent;
    transition: all 0.3s ease;
}

.btn-auth:hover {
    background-color: var(--color-surface);
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-2px);
}

.btn-cta:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: var(--color-white);
}

.btn-auth i,
.btn-cta i {
    transition: transform 0.3s ease;
}

.btn-cta:hover i {
    transform: translateX(3px);
}

.site-header__mobile-toggle, .site-header__menu-close {
    display: none;
    background: none;
    border: none;
    color: var(--color-text-primary);
    font-size: 24px;
    cursor: pointer;
}
@media (max-width: 1024px) {
    .site-header__menu {
        position: fixed;
        top: 0;
        left: 0;
        width: 100vw;
        height: 100vh;
        background-color: rgba(17, 24, 39, 0.95);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 50px;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: transform 0.4s cubic-bezier(0.23, 1, 0.32, 1), opacity 0.4s ease, visibility 0.4s ease;
    }
    .site-header__menu.is-open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    .site-header__nav {
        flex-grow: 0;
        overflow-y: visible;
    }
    .site-header__nav ul {
        flex-direction: column;
        align-items: center;
        gap: 20px;
    }
    .site-header__nav a {
        font-size: 22px;
        padding: 10px;
        color: rgba(255, 255, 255, 0.8);
        font-weight: 500;
        transition: color 0.3s ease, transform 0.3s ease;
    }
    .site-header__nav a:hover {
        color: var(--color-white);
        transform: scale(1.1);
    }
    .site-header__nav a::after {
        display: none;
    }
    .site-header__actions {
        flex-direction: column;
        align-items: center;
        gap: 15px;
        padding: 0;
        margin-top: 0;
        border-top: none;
        width: 100%;
        max-width: 280px;
    }
    .site-header__actions .user-actions, .site-header__actions .user-welcome, .site-header__actions a {
        width: 100%;
        text-align: center;
        justify-content: center;
    }
    .btn-auth,
    .btn-cta {
        padding: 14px;
        font-size: 1rem;
    }
    .site-header__mobile-toggle {
        display: block;
    }
    .site-header__menu-close {
        display: block;
        position: absolute;
        top: 30px;
        right: 30px;
        font-size: 30px;
        color: var(--color-white);
        opacity: 0.8;
        transition: opacity 0.3s ease, transform 0.3s ease;
    }
    .site-header__menu-close:hover {
        opacity: 1;
        transform: rotate(90deg);
    }
    .site-header__actions .user-actions {
        flex-direction: column;
        align-items: center;
        gap: 15px;
    }
    .site-header__actions .user-welcome {
        color: rgba(255, 255, 255, 0.7);
        margin-bottom: 10px;
        font-size: 1rem;
        order: -1; 
    }
     .site-header__actions .user-welcome span {
        color: var(--color-white);
    }
}
.site-header__actions .btn-auth,
.site-header__actions .btn-cta {
    position: relative;
    z-index: 1;
    border: 1px solid rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    transition: all 0.3s ease;
}

.site-header__actions .btn-auth {
    background-color: rgba(255, 255, 255, 0.7);
    color: var(--color-primary);
}

.site-header__actions .btn-auth:hover {
    background-color: rgba(255, 255, 255, 1);
}

.site-header__actions .btn-cta {
    background-color: rgba(138, 77, 171, 0.6);
}

.site-header__actions .btn-cta:hover {
    background-color: rgba(138, 77, 171, 0.9);
}

.site-header__actions .btn-auth::before,
.site-header__actions .btn-cta::before {
    content: '';
    position: absolute;
    z-index: -1;
    top: -3px;
    left: -3px;
    right: -3px;
    bottom: -3px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 50px;
    border: 1px solid rgba(255, 255, 255, 0.3);
}
.site-header__actions .profile-dropdown {
    position: relative;
    z-index: 10;
}

.profile-dropdown__toggle {
    display: flex;
    align-items: center;
    gap: 10px;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 50px;
    padding: 5px 15px 5px 5px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.profile-dropdown__toggle:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    transform: translateY(-2px);
}

.profile-dropdown__toggle .avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: var(--color-primary);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    object-fit: cover;
}

.profile-dropdown__toggle span {
    font-weight: 600;
    font-size: 14px;
    color: var(--color-text-primary);
}

.profile-dropdown__menu {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    width: 220px;
    background-color: var(--color-white);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    padding: 10px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease;
}

.profile-dropdown.is-open .profile-dropdown__menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.profile-dropdown__menu a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: 6px;
    font-size: 15px;
    color: var(--color-text-secondary);
    transition: background-color 0.2s, color 0.2s;
}

.profile-dropdown__menu a:hover {
    background-color: var(--color-surface);
    color: var(--color-text-primary);
}

.profile-dropdown__menu a i {
    width: 20px;
    text-align: center;
    color: var(--color-primary);
}

.profile-dropdown__footer {
    border-top: 1px solid var(--color-border);
    margin-top: 10px;
    padding-top: 10px;
}

@media (max-width: 1024px) {
    .profile-dropdown__toggle {
        background-color: transparent;
        border: 1px solid rgba(255,255,255,0.2);
        padding: 5px;
        width: auto;
    }
    .profile-dropdown__toggle span {
        display: none;
    }
     .profile-dropdown__menu {
        position: fixed;
        width: 90%;
        max-width: 280px;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%) translateY(10px);
        opacity: 0;
        visibility: hidden;
    }
    .profile-dropdown.is-open .profile-dropdown__menu {
        transform: translate(-50%, -50%) translateY(0);
    }
    .site-header__actions .user-actions {
        order: 10;
    }
}