/**
 * Header Styles
 * Clean, minimalistic header design
 */

header {
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-md) 0 var(--spacing-sm) 0;
    margin-bottom: var(--spacing-lg);
    position: relative;
}

/* Subtle shadow on header for depth */
header::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--color-border), transparent);
}

header > div {
    max-width: 850px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

header h1 {
    font-size: 2rem;
    font-weight: 250;
    letter-spacing: -0.04em;
    margin: 0 0 var(--spacing-xs) 0;
    color: var(--color-text-primary);
}

@media (min-width: 768px) {
    header h1 {
        font-size: 2.5rem;
    }
}

.site-tagline {
    font-size: 0.95rem;
    font-weight: 400;
    color: var(--color-text-muted);
    margin: 0 0 var(--spacing-sm) 0;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    font-family: var(--font-mono);
}

.header-icons {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-sm);
    flex-wrap: wrap;
}

.header-icons a {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    font-weight: 400;
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    transition: all var(--transition-base);
    position: relative;
}

.header-icons a::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 6px;
    background-color: var(--color-bg-alt);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.header-icons a:hover {
    color: var(--color-accent);
}

.header-icons a:hover::before {
    opacity: 1;
}

.header-icons a i,
.header-icons a .icon-text {
    position: relative;
    z-index: 1;
}

.header-icons a i {
    font-size: 1.1rem;
}

.icon-text, .icon-text-no-disappear {
    font-size: 0.95rem;
    font-weight: 400;
}

/* Hide icon text on small screens */
@media (max-width: 640px) {
    .icon-text {
        display: none;
    }
}

.header-icons-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    align-items: flex-start;
}

.header-icons-list a {
    justify-content: flex-start;
}

/* Navigation Menu */
.minimal-menu {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-sm);
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--color-border-light);
}

.menu-item {
    margin: 0;
}

.menu-item a {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    font-weight: 400;
    padding: 0.5rem 0;
    display: inline-block;
    position: relative;
    transition: color var(--transition-fast);
}

.menu-item a:hover {
    color: var(--color-text-primary);
}

.menu-item a span {
    position: relative;
    padding-bottom: 0.25rem;
}

/* Active state */
.menu-item a span[style*="border-bottom"] {
    border-bottom: 2px solid var(--color-accent) !important;
    color: var(--color-text-primary);
    font-weight: 500;
}

/* Hover underline effect */
.menu-item a span::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: width var(--transition-base);
}

.menu-item a:hover span::after {
    width: 100%;
}

.menu-item a span[style*="border-bottom"]::after {
    display: none;
}