/* === Layout System === */
/* Container, grid, and responsive breakpoints */

/* --- Container --- */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* --- Sections --- */
section {
    padding: var(--space-2xl) 0;
}

/* --- Portfolio Grid --- */
.portfolio-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
}

/* --- Nav Layout --- */
.main-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--win-surface);
    border-bottom: 2px solid var(--win-darker);
    border-top: 2px solid var(--win-light);
    box-shadow:
        inset 0 1px 0 var(--win-lighter),
        inset 0 -1px 0 var(--win-dark);
}

.main-nav .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 32px;
}

.nav-logo {
    font-family: var(--font-pixel);
    font-size: 18px;
    color: var(--text-primary);
    text-decoration: none;
    white-space: nowrap;
}

.nav-logo:visited {
    color: var(--text-primary);
}

.nav-links {
    display: none;
    flex-wrap: wrap;
    align-items: center;
    gap: 0;
}

.nav-links.nav--open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--win-surface);
    border-bottom: 2px solid var(--win-darker);
    padding: var(--space-sm);
    box-shadow: 2px 2px 0 rgba(0,0,0,0.2);
    z-index: 99;
}

.nav-links a {
    display: block;
    padding: var(--space-xs) var(--space-sm);
    color: var(--text-primary);
    text-decoration: none;
    font-size: 13px;
    white-space: nowrap;
}

.nav-links a:hover {
    background: var(--titlebar-active);
    color: var(--text-on-dark);
}

.nav-links a.active {
    background: var(--titlebar-active);
    color: var(--text-on-dark);
}

.nav-divider {
    display: none;
    color: var(--win-dark);
    font-size: 13px;
    user-select: none;
}

.nav-toggle {
    display: block;
    padding: 2px 8px;
    font-family: var(--font-mono);
    font-size: 14px;
    cursor: pointer;
    background: var(--win-surface);
    border-top:    2px solid var(--win-light);
    border-left:   2px solid var(--win-light);
    border-bottom: 2px solid var(--win-darker);
    border-right:  2px solid var(--win-darker);
    color: var(--text-primary);
}

.nav-toggle:active {
    border-top:    2px solid var(--win-darker);
    border-left:   2px solid var(--win-darker);
    border-bottom: 2px solid var(--win-light);
    border-right:  2px solid var(--win-light);
}

/* --- Footer Layout --- */
.site-footer {
    text-align: center;
    padding: var(--space-xl) 0 var(--space-lg);
    font-size: 13px;
    color: var(--text-secondary);
}

.footer-badges {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-sm);
    margin: var(--space-md) 0;
}

.hit-counter {
    font-family: var(--font-mono);
    font-size: 14px;
    background: #000;
    color: #0f0;
    padding: 2px 8px;
    border: 1px solid var(--win-darker);
    display: inline-block;
    letter-spacing: 2px;
}

/* --- Social Links Layout --- */
.social-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-sm);
}

/* --- Blog Post Layout --- */
.blog-post {
    padding: var(--space-md);
    border-bottom: 1px dashed var(--win-dark);
}

.blog-post:last-child {
    border-bottom: none;
}

.blog-post__date {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: var(--space-xs);
}

.blog-post__title {
    font-family: var(--font-pixel);
    font-size: 24px;
    font-weight: normal;
    margin-bottom: var(--space-sm);
}

.blog-post p {
    margin-bottom: var(--space-sm);
    line-height: 1.6;
}

/* --- Roadmap Tree Layout --- */
.roadmap-quarter {
    margin-bottom: var(--space-lg);
}

.roadmap-quarter__title {
    font-family: var(--font-pixel);
    font-size: 22px;
    font-weight: normal;
    margin-bottom: var(--space-sm);
    padding: var(--space-xs) var(--space-sm);
    background: #FFD700;
    border: 1px solid #B8860B;
    display: inline-block;
}

.roadmap-tree {
    padding-left: var(--space-lg);
    border-left: 2px solid var(--win-dark);
    margin-left: var(--space-sm);
}

.roadmap-tree li {
    position: relative;
    padding: var(--space-xs) 0 var(--space-xs) var(--space-md);
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-sm);
}

.roadmap-tree li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    width: 12px;
    height: 2px;
    background: var(--win-dark);
}

/* --- News Item Layout --- */
.news-item {
    padding: var(--space-sm) var(--space-md);
    margin-bottom: var(--space-sm);
}

.news-item__date {
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: bold;
    color: var(--text-secondary);
}

.news-item__text {
    font-size: 14px;
    margin-top: var(--space-xs);
}

/* --- About Section Layout --- */
.about-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.about-photo {
    width: 150px;
    height: 150px;
    background: var(--win-lighter);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-secondary);
    flex-shrink: 0;
    overflow: hidden;
}

.about-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.about-bio {
    flex: 1;
}

.about-bio h3 {
    font-family: var(--font-pixel);
    font-size: 24px;
    font-weight: normal;
}

.about-bio .subtitle {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
}

.about-info-table {
    width: 100%;
    font-family: var(--font-mono);
    font-size: 13px;
    border-collapse: collapse;
}

.about-info-table td {
    padding: var(--space-xs) var(--space-sm);
    border-bottom: 1px solid var(--win-dark);
}

.about-info-table td:first-child {
    font-weight: bold;
    white-space: nowrap;
    width: 120px;
}

/* === Responsive: Tablet (640px+) === */
@media (min-width: 640px) {
    .container {
        padding: 0 var(--space-lg);
    }

    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .about-content {
        flex-direction: row;
        align-items: flex-start;
    }

    .about-photo {
        width: 150px;
        height: 150px;
    }
}

/* === Responsive: Desktop (1024px+) === */
@media (min-width: 1024px) {
    .nav-toggle {
        display: none;
    }

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

    .nav-divider {
        display: inline;
    }

    .portfolio-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}