/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.logo-img {
    width: 100px;
    transition: transform 0.3s ease;
}

.logo:hover .logo-img {
    transform: scale(1.1);
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-light);
    background: linear-gradient(135deg, var(--text-light) 0%, var(--primary-start) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-list {
    display: flex;
    list-style: none;
    gap: 2rem;
    margin: 0;
    padding: 0;
}

.nav-list li {
    position: relative;
}

.nav-list a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    transition: color 0.3s ease;
    display: flex;
    align-items: center;
    padding: 0.5rem 0;
}

.nav-list a:hover {
    color: var(--primary-start);
}

.arrow {
    font-size: 0.8rem;
    margin-left: 0.5rem;
    transition: transform 0.3s ease;
}

.dropdown:hover .arrow {
    transform: rotate(180deg);
}

.header-buttons {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.contact-btn {
    background: transparent;
    border: 2px solid var(--text-light);
    color: var(--text-light);
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.contact-btn:hover {
    background: var(--text-light);
    color: var(--bg-dark);
    transform: translateY(-2px);
}

.lang-btn {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: var(--text-light);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.lang-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-light);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 4px;
    transition: background 0.3s ease;
}

.menu-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* Mobile Sidebar */
.mobile-sidebar {
    position: fixed;
    top: 0;
    right: -100%;
    height: 100vh;
    width: 280px;
    background: var(--card-bg);
    color: var(--text-light);
    padding: 2rem 1.5rem;
    box-shadow: -2px 0 20px rgba(0, 0, 0, 0.5);
    transition: right 0.3s ease;
    z-index: 1001;
    overflow-y: auto;
}

.mobile-sidebar.open {
    right: 0;
}

.mobile-sidebar ul {
    list-style: none;
    padding: 0;
    margin-top: 2rem;
}

.mobile-sidebar li {
    margin-bottom: 1rem;
}

.mobile-sidebar a {
    display: block;
    padding: 0.75rem 0;
    color: var(--text-light);
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: 500;
    transition: color 0.3s ease;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.mobile-sidebar a:hover {
    color: var(--primary-start);
}

.close-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--text-light);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: background 0.2s ease;
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.close-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* Header scroll effect */
.header.scrolled {
    background: rgba(10, 10, 10, 0.98);
    backdrop-filter: blur(25px);
    border-bottom-color: rgba(255, 255, 255, 0.2);
}

/* Responsive behavior */
@media (max-width: 768px) {
    .nav {
        display: none;
    }

    .menu-toggle {
        display: block;
    }

    .header-container {
        padding: 1rem 1rem;
    }

    .contact-btn {
        display: none;
    }

    .lang-btn {
        padding: 0.4rem 0.8rem;
        font-size: 0.8rem;
    }

    .logo-text {
        font-size: 1.3rem;
    }
}

@media (max-width: 480px) {

    .logo-text {
        font-size: 1.2rem;
    }

    .header-container {
        padding: 0.75rem 0;
    }
}

/* Dropdown hover effects (for future use) */
.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--card-bg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 0.5rem 0;
    min-width: 200px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu a {
    padding: 0.75rem 1rem;
    font-size: 0.9rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.dropdown-menu a:last-child {
    border-bottom: none;
}

.dropdown-menu a:hover {
    background: rgba(255, 255, 255, 0.05);
}