/* =================================================================
   HEADER - Transparent Header with White Logo
   ================================================================= */

/* ===== MAIN HEADER ===== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    background-color: transparent;
    transition: all var(--transition-base);
    padding: var(--space-4) 0;
}

.header--scrolled {
    background-color: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    box-shadow: 0 2px 30px rgba(0, 0, 0, 0.2);
    padding: var(--space-2) 0;
}

/* ===== HEADER CONTAINER ===== */

.header__container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
}

/* ===== LOGO ===== */

.header__logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    text-decoration: none;
    flex-shrink: 0;
}

.header__logo img {
    height: 50px;
    width: auto;
    filter: brightness(0) invert(1);
    transition: all var(--transition-base);
}

.header__logo:hover img {
    filter: brightness(0) invert(1) drop-shadow(0 0 8px rgba(255, 255, 255, 0.4));
    transform: scale(1.05);
}

/* ===== NAVIGATION ===== */

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

.nav__list {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav__link {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    white-space: nowrap;
    position: relative;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--color-white);
    border-radius: 2px;
    transition: width var(--transition-base);
}

.nav__link:hover {
    color: #ffffff;
}

.nav__link:hover::after {
    width: 60%;
}

.nav__link--active {
    color: #ffffff;
}

.nav__link--active::after {
    width: 60%;
}

/* ===== HEADER ACTIONS ===== */

.header__actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex-shrink: 0;
}

.lang-toggle {
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.25);
    padding: var(--space-1-5) var(--space-3);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    cursor: pointer;
    transition: all var(--transition-base);
    font-weight: var(--font-medium);
    white-space: nowrap;
}

.lang-toggle:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
}

/* CTA Button in Header - White background */
.header .header__actions .btn.btn--primary {
    background-color: #ffffff;
    color: #111111;
    border-color: #ffffff;
    font-weight: var(--font-semibold);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

.header .header__actions .btn.btn--primary:hover {
    background-color: rgba(255, 255, 255, 0.9);
    border-color: rgba(255, 255, 255, 0.9);
    color: #111111;
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(255, 255, 255, 0.3);
}

/* ===== MOBILE MENU TOGGLE ===== */

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-2);
    cursor: pointer;
    background: none;
    border: none;
    z-index: calc(var(--z-modal) + 1);
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background-color: #ffffff;
    transition: all var(--transition-base);
    border-radius: 2px;
}

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

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

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== MOBILE MENU ===== */

.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--space-6);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-slow);
    z-index: var(--z-modal);
    padding: var(--space-8);
}

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

.mobile-menu .nav__list {
    flex-direction: column;
    gap: var(--space-4);
    align-items: center;
}

.mobile-menu .nav__link {
    font-size: var(--text-xl);
    padding: var(--space-3) var(--space-6);
    color: rgba(255, 255, 255, 0.9);
}

.mobile-menu .nav__link:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.1);
}

.mobile-menu .btn--primary {
    margin-top: var(--space-4);
    font-size: var(--text-lg);
    padding: var(--space-3) var(--space-8);
}

/* ===== RESPONSIVE - TABLET ===== */

@media (max-width: 1024px) {
    .header__logo img {
        height: 40px;
    }

    .nav__link {
        font-size: var(--text-xs);
        padding: var(--space-1-5) var(--space-2);
    }
}

/* ===== RESPONSIVE - MOBILE ===== */

@media (max-width: 768px) {
    .header {
        padding: var(--space-3) 0;
    }

    .header--scrolled {
        padding: var(--space-2) 0;
    }

    .header__logo img {
        height: 36px;
    }

    .nav {
        display: none;
    }

    .header__actions .btn--primary,
    .header__actions .btn--sm {
        display: none;
    }

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

/* ===== RTL SUPPORT ===== */

html[dir="rtl"] .header__container {
    flex-direction: row-reverse;
}

html[dir="rtl"] .nav__list {
    flex-direction: row-reverse;
}

html[dir="rtl"] .header__actions {
    flex-direction: row-reverse;
}

html[dir="rtl"] .mobile-menu .nav__list {
    flex-direction: column;
}