.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--bg-color);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
    transition: var(--transition);
}

[data-theme="dark"] .header {
    background: rgba(0, 0, 0, 0.95);
    border-bottom-color: var(--gray-600);
}

.navbar {
    position: fixed;
    top: 1rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 50;
    width: 95%;
    max-width: 1100px;
    background: var(--bg-color);
    border-radius: 2rem;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(20px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
    min-height: var(--header-height);
}

[data-theme="dark"] .navbar {
    background: rgba(0, 0, 0, 0.95);
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(20px);
}

.navbar-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    min-height: var(--header-height);
}

.navbar-logo {
    display: flex;
    align-items: center;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-color);
    text-decoration: none;
    transition: var(--transition);
}

.logo-link:hover {
    opacity: 0.8;
}

.logo-image {
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 0.75rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.logo-name {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-color);
}

/* Modern Navigation */
.navbar-nav {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    background: rgba(var(--text-rgb), 0.03);
    border: 1px solid rgba(var(--text-rgb), 0.08);
    backdrop-filter: blur(16px);
    padding: 0.375rem;
    border-radius: 1.5rem;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

[data-theme="dark"] .navbar-nav {
    background: rgba(0, 0, 0, 0.8);
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.nav-item {
    position: relative;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    padding: 0.625rem 1rem;
    border-radius: 1rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--gray-600);
    white-space: nowrap;
}

.nav-item:hover {
    color: var(--text-color);
    background: rgba(var(--text-rgb), 0.05);
}

.nav-item.active {
    background: var(--primary-color);
    color: white;
    box-shadow: 0 4px 12px rgba(var(--primary-rgb), 0.3);
    font-weight: 600;
}

[data-theme="dark"] .nav-item:hover {
    background: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .nav-item.active {
    box-shadow: 0 4px 12px rgba(var(--primary-rgb), 0.4);
}

.nav-text {
    display: none;
}

@media (min-width: 768px) {
    .nav-text {
        display: inline;
    }
}

.nav-item i {
    font-size: 1.125rem;
    width: 1.125rem;
    height: 1.125rem;
}

/* Tubelight Effect */
.nav-lamp {
    position: absolute;
    inset: 0;
    width: 100%;
    background: rgba(37, 99, 235, 0.05);
    border-radius: 9999px;
    z-index: -1;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.nav-item.active .nav-lamp {
    opacity: 1;
}

.nav-item.active .nav-lamp::before {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: 2rem;
    height: 0.25rem;
    background: var(--primary-color);
    border-radius: 0 0 9999px 9999px;
}

.nav-item.active .nav-lamp::after {
    content: '';
    position: absolute;
    bottom: -0.75rem;
    left: 50%;
    transform: translateX(-50%);
    width: 3rem;
    height: 1.5rem;
    background: var(--primary-color);
    border-radius: 9999px;
    filter: blur(8px);
    opacity: 0.3;
}

/* Language Toggle */
.language-toggle {
    background: rgba(var(--text-rgb), 0.05);
    border: 1px solid rgba(var(--text-rgb), 0.1);
    cursor: pointer;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: var(--text-color);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    margin-left: 0.75rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] .language-toggle {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.language-toggle:hover {
    background: rgba(var(--text-rgb), 0.1);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    color: var(--primary-color);
}

/* Language Text Styling */
.language-toggle .lang-text {
    font-size: 0.9rem;
    font-weight: 600;
    transition: all 0.3s ease;
    display: block;
    line-height: 1;
    color: var(--primary-color);
}

.language-toggle:hover .lang-text {
    transform: scale(1.1);
    color: var(--text-color);
}

/* Theme Toggle */
.theme-toggle {
    background: rgba(var(--text-rgb), 0.05);
    border: 1px solid rgba(var(--text-rgb), 0.1);
    cursor: pointer;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: var(--text-color);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    margin-left: 0.75rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] .theme-toggle {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.theme-toggle:hover {
    background: rgba(var(--text-rgb), 0.1);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    color: var(--primary-color);
}

/* Mobile Controls */
.mobile-controls {
    display: none;
    align-items: center;
    gap: 0.75rem;
}

/* Mobile Language Toggle */
.language-toggle-mobile {
    background: rgba(var(--text-rgb), 0.05);
    border: 1px solid rgba(var(--text-rgb), 0.1);
    cursor: pointer;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: var(--text-color);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] .language-toggle-mobile {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.language-toggle-mobile:hover {
    background: rgba(var(--text-rgb), 0.1);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    color: var(--primary-color);
}

/* Mobile Language Text Styling */
.language-toggle-mobile .lang-text {
    font-size: 0.9rem;
    font-weight: 600;
    transition: all 0.3s ease;
    display: block;
    line-height: 1;
    color: var(--primary-color);
}

.language-toggle-mobile:hover .lang-text {
    transform: scale(1.1);
    color: var(--text-color);
}

/* Mobile Theme Toggle */
.theme-toggle-mobile {
    background: rgba(var(--text-rgb), 0.05);
    border: 1px solid rgba(var(--text-rgb), 0.1);
    cursor: pointer;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    padding: 0.5rem;
    color: var(--text-color);
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    transition: all 0.3s ease;
}

.theme-toggle-mobile:hover {
    background: rgba(var(--text-rgb), 0.1);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    color: var(--primary-color);
}

/* Mobile Menu */
.mobile-menu-btn {
    display: none;
    background: var(--bg-color);
    border: 1px solid var(--gray-200);
    cursor: pointer;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    padding: 0.5rem;
    color: var(--text-color);
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
}

[data-theme="dark"] .mobile-menu-btn {
    border-color: var(--gray-600);
}

/* Using icon now; keep spans styles removed */

/* Mobile Navigation */
@media (max-width: 767px) {
    .navbar {
        left: 0;
        right: 0;
        transform: none;
        width: calc(100% - 1.5rem);
        margin: 0 0.75rem;
    }

    .navbar-nav {
        display: none;
        position: absolute;
        top: calc(var(--header-height) + 1rem);
        left: 0.75rem;
        right: 0.75rem;
        flex-direction: column;
        background: var(--bg-color);
        padding: 1rem;
        gap: 0.5rem;
        border-radius: 1rem;
        box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
        border: 1px solid rgba(var(--text-rgb), 0.1);
    }

    [data-theme="dark"] .navbar-nav {
        background: rgba(0, 0, 0, 0.95);
        border-color: rgba(255, 255, 255, 0.2);
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
        backdrop-filter: blur(20px);
    }

    .navbar-nav.active {
        display: flex;
    }

    .nav-item {
        width: 100%;
        justify-content: center;
    }

    .nav-text {
        display: inline;
    }

    .language-toggle {
        display: none !important;
    }

    .theme-toggle {
        display: none !important;
    }

    .mobile-controls {
        display: flex;
        gap: 0.5rem;
    }

    .theme-toggle-mobile {
        display: flex;
    }

    .mobile-menu-btn {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
    }

    .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(5px, -5px);
    }
}