/* ========================================
   Header - Metasoft Solutions
   Refactored with simplified structure
   ======================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    z-index: var(--z-header, 1000);
    background-color: rgba(2, 8, 20, 0.95);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-bottom: 1px solid rgba(35, 66, 95, 0.3);
    transition: all 0.3s ease;
    transition: var(--transition-base, all 0.3s ease);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 6rem;
    padding: 0 1rem;
    max-width: 1280px;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .header-content {
        height: 6.5rem;
    }
}

/* ========================================
   Logo
   ======================================== */

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.logo:hover {
    transform: scale(1.05);
    opacity: 0.9;
}

.logo:active {
    transform: scale(0.98);
}

.logo-icon {
    width: 5rem;
    height: 5rem;
    object-fit: contain;
    border-radius: 0.75rem;
    border-radius: var(--border-radius-lg, 0.75rem);
}

@media (min-width: 768px) {
    .logo-icon {
        width: 5rem;
        height: 5rem;
    }
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-name {
    color: #E5F3F8;
    color: var(--text-light, #E5F3F8);
    font-size: 1.125rem;
    font-weight: 600;
    letter-spacing: -0.025em;
    line-height: 1.2;
}

@media (min-width: 768px) {
    .logo-name {
        font-size: 1.25rem;
    }
}

.logo-subtitle {
    color: #8D9AA2;
    color: var(--text-muted, #8D9AA2);
    font-size: 0.75rem;
    margin-top: -0.125rem;
}

/* ========================================
   Desktop Navigation
   ======================================== */

.nav-desktop {
    display: none;
    align-items: center;
    gap: 0.25rem;
}

@media (min-width: 1024px) {
    .nav-desktop {
        display: flex;
    }
}

.nav-link {
    padding: 0.5rem 1rem;
    border-radius: 0.75rem;
    border-radius: var(--border-radius-lg, 0.75rem);
    background: none;
    border: none;
    color: #8D9AA2;
    color: var(--text-muted, #8D9AA2);
    font-size: 0.9375rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
}

.nav-link:hover {
    color: #E5F3F8;
    color: var(--text-light, #E5F3F8);
    background-color: rgba(35, 66, 95, 0.5);
}

.nav-link.active {
    background: linear-gradient(135deg, #1A6BC2, #4BBBEC);
    background: linear-gradient(135deg, var(--primary-color, #1A6BC2), var(--primary-light, #4BBBEC));
    color: #E5F3F8;
    color: var(--text-light, #E5F3F8);
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(26, 107, 194, 0.3);
}

/* ========================================
   Language Selector Desktop
   ======================================== */

.language-selector {
    display: none;
    align-items: center;
    gap: 0.25rem;
    margin-left: 1rem;
    padding-left: 1rem;
    border-left: 1px solid rgba(255, 255, 255, 0.1);
}

@media (min-width: 1024px) {
    .language-selector {
        display: flex;
    }
}

.lang-button {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.375rem 0.75rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 0.75rem;
    border-radius: var(--border-radius-lg, 0.75rem);
    background: transparent;
    color: #8D9AA2;
    color: var(--text-muted, #8D9AA2);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.lang-button:hover {
    background: rgba(26, 107, 194, 0.1);
    border-color: rgba(26, 107, 194, 0.3);
    color: #E5F3F8;
    color: var(--text-light, #E5F3F8);
}

.lang-button.active {
    background: linear-gradient(135deg, #1A6BC2, #4BBBEC);
    background: linear-gradient(135deg, var(--primary-color, #1A6BC2), var(--primary-light, #4BBBEC));
    border-color: #4BBBEC;
    border-color: var(--primary-light, #4BBBEC);
    color: #E5F3F8;
    color: var(--text-light, #E5F3F8);
    box-shadow: 0 2px 8px rgba(26, 107, 194, 0.3);
}

.lang-text {
    font-weight: 600;
    letter-spacing: 0.025em;
}

/* ========================================
   Mobile Menu Button
   ======================================== */

.mobile-menu-button {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    background: transparent;
    border: none;
    color: #E5F3F8;
    color: var(--text-light, #E5F3F8);
    cursor: pointer;
    border-radius: 0.75rem;
    border-radius: var(--border-radius-lg, 0.75rem);
    transition: all 0.3s ease;
    transition: var(--transition-base, all 0.3s ease);
    flex-shrink: 0;
    position: relative;
    z-index: 10;
}

.mobile-menu-button svg {
    width: 24px;
    height: 24px;
    display: block;
}

.mobile-menu-button:hover {
    background-color: rgba(35, 66, 95, 0.5);
}

.mobile-menu-button:active {
    transform: scale(0.95);
}

@media (min-width: 1024px) {
    .mobile-menu-button {
        display: none;
    }
}

.mobile-menu-button .close-icon {
    display: none;
}

.mobile-menu-button[aria-expanded="true"] .menu-icon {
    display: none;
}

.mobile-menu-button[aria-expanded="true"] .close-icon {
    display: block;
}

/* ========================================
   Mobile Navigation
   ======================================== */

.nav-mobile {
    display: none;
    flex-direction: column;
    gap: 0.25rem;
    padding: 1rem 0;
}

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

@media (min-width: 1024px) {
    .nav-mobile {
        display: none !important;
    }
}

.nav-link-mobile {
    width: 100%;
    text-align: left;
    padding: 0.75rem 1rem;
    border-radius: 0.75rem;
    border-radius: var(--border-radius-lg, 0.75rem);
    background: none;
    border: none;
    color: #8D9AA2;
    color: var(--text-muted, #8D9AA2);
    font-size: 0.9375rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
}

.nav-link-mobile:hover {
    color: #E5F3F8;
    color: var(--text-light, #E5F3F8);
    background-color: rgba(35, 66, 95, 0.5);
}

.nav-link-mobile.active {
    background: linear-gradient(135deg, #1A6BC2, #4BBBEC);
    background: linear-gradient(135deg, var(--primary-color, #1A6BC2), var(--primary-light, #4BBBEC));
    color: #E5F3F8;
    color: var(--text-light, #E5F3F8);
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(26, 107, 194, 0.3);
}

/* ========================================
   Language Selector Mobile
   ======================================== */

.language-selector-mobile {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.language-selector-mobile .lang-button {
    flex: 1;
    justify-content: center;
    padding: 0.75rem 1rem;
}

.language-selector-mobile .lang-flag {
    font-size: 1.125rem;
    line-height: 1;
}

.language-selector-mobile .lang-text {
    display: inline;
}

@media (min-width: 1024px) {
    .language-selector-mobile {
        display: none;
    }
}

/* ========================================
   Accessibility & Focus Styles
   ======================================== */

.logo:focus-visible,
.nav-link:focus-visible,
.nav-link-mobile:focus-visible,
.lang-button:focus-visible,
.mobile-menu-button:focus-visible {
    outline: 2px solid var(--primary-light);
    outline-offset: 2px;
}

/* ========================================
   Animations
   ======================================== */

.nav-mobile {
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}