/* ============================================
   Header Component
   ============================================ */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border-light);
    transition: box-shadow var(--transition-base), background-color var(--transition-base);
}

.header--scrolled {
    box-shadow: var(--shadow-md);
    background-color: rgba(255, 255, 255, 0.98);
}

.header__content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

/* Logo */
.header__logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-xl);
    font-weight: var(--font-bold);
    color: var(--color-primary);
    transition: transform var(--transition-base);
}

.header__logo:hover {
    transform: translateY(-2px);
}

.logo__icon {
    font-size: 1.75rem;
}

.logo__text {
    background: var(--gradient-blue);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Navigation */
.header__nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav__link {
    position: relative;
    font-size: var(--font-size-base);
    font-weight: var(--font-medium);
    color: var(--color-text-secondary);
    padding: var(--spacing-xs) 0;
    transition: color var(--transition-base);
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-blue);
    transition: width var(--transition-base);
}

.nav__link:hover {
    color: var(--color-primary);
}

.nav__link:hover::after {
    width: 100%;
}

.nav__link--cta {
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--gradient-blue);
    color: var(--color-text-inverse);
    border-radius: var(--radius-full);
    font-weight: var(--font-semibold);
}

.nav__link--cta::after {
    display: none;
}

.nav__link--cta:hover {
    color: var(--color-text-inverse);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Mobile Menu Toggle */
.header__menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    padding: var(--spacing-xs);
    background: none;
    border: none;
    cursor: pointer;
}

.header__menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-text-primary);
    transition: all var(--transition-base);
}

.header__menu-toggle--active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

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

.header__menu-toggle--active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* Responsive */
@media (max-width: 768px) {
    .header__content {
        height: 64px;
    }

    .header__menu-toggle {
        display: flex;
    }

    .header__nav {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        flex-direction: column;
        gap: 0;
        background-color: var(--color-bg-primary);
        border-bottom: 1px solid var(--color-border);
        box-shadow: var(--shadow-lg);
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition-slow);
    }

    .header__nav--open {
        max-height: 400px;
    }

    .nav__link {
        width: 100%;
        padding: var(--spacing-md) var(--spacing-lg);
        border-bottom: 1px solid var(--color-border-light);
    }

    .nav__link::after {
        display: none;
    }

    .nav__link--cta {
        margin: var(--spacing-md);
        text-align: center;
    }

    .logo__text {
        font-size: var(--font-size-lg);
    }
}