:root {
    --bg-color: #0b0f19;
    --card-bg: #111827;
    --card-hover: #1a2234;
    --border-color: #1f293d;
    --text-main: #e2e8f0;
    --text-muted: #94a3b8;
    --accent: #38bdf8;
    --accent-hover: #7dd3fc;
    --badge-bg: rgba(56, 189, 248, 0.1);
    --badge-border: rgba(56, 189, 248, 0.25);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
}

header {
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 1.1rem 1.5rem;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    max-width: 1140px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.brand a {
    color: #f8fafc;
    font-size: 1.3rem;
    font-weight: 700;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

nav {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

nav a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.92rem;
    transition: color 0.15s ease;
}

nav a:hover, nav a.active {
    color: var(--accent);
}

main {
    max-width: 1140px;
    margin: 2rem auto;
    padding: 0 1.5rem;
}

.hero {
    background: linear-gradient(180deg, rgba(56, 189, 248, 0.09) 0%, rgba(11, 15, 25, 0) 100%);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2.2rem;
    margin-bottom: 2.5rem;
}

.hero h1 {
    font-size: 1.95rem;
    color: #f8fafc;
    margin-bottom: 0.75rem;
    font-weight: 800;
}

.hero p {
    color: var(--text-muted);
    font-size: 1.05rem;
    max-width: 850px;
}

.categories-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin: 1.5rem 0 2rem;
}

.cat-chip {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 0.45rem 1rem;
    border-radius: 24px;
    text-decoration: none;
    font-size: 0.88rem;
    transition: all 0.15s ease;
}

.cat-chip:hover, .cat-chip.active {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--badge-bg);
}

.section-title {
    font-size: 1.35rem;
    color: #f8fafc;
    margin: 2.5rem 0 1.25rem;
    border-left: 4px solid var(--accent);
    padding-left: 0.85rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.25rem;
}

.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 1.35rem;
    transition: transform 0.15s ease, border-color 0.15s ease;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.card:hover {
    transform: translateY(-2px);
    border-color: var(--accent);
    background-color: var(--card-hover);
}

.card-title {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    line-height: 1.45;
}

.card-title a {
    color: var(--text-main);
    text-decoration: none;
    word-break: break-word;
    transition: color 0.15s ease;
}

.card-title a:hover {
    color: var(--accent);
}

.card-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.badge {
    background: var(--badge-bg);
    border: 1px solid var(--badge-border);
    color: var(--accent);
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
}

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.4rem;
    margin: 3rem 0;
    flex-wrap: wrap;
}

.pagination a, .pagination span {
    padding: 0.45rem 0.9rem;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background: var(--card-bg);
    color: var(--text-main);
    text-decoration: none;
    font-size: 0.88rem;
}

.pagination a:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.pagination .active {
    background: var(--accent);
    color: #0b0f19;
    font-weight: 700;
    border-color: var(--accent);
}

.article-view {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2.2rem;
    margin-bottom: 2.5rem;
}

.article-view h1 {
    color: #f8fafc;
    margin-bottom: 1rem;
    font-size: 1.95rem;
}

.article-content {
    font-size: 1.05rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
    line-height: 1.7;
}

footer {
    border-top: 1px solid var(--border-color);
    background-color: var(--card-bg);
    color: var(--text-muted);
    text-align: center;
    padding: 2.5rem 1.5rem;
    margin-top: 5rem;
    font-size: 0.88rem;
}

footer a {
    color: var(--text-muted);
    text-decoration: underline;
    margin: 0 0.5rem;
}

footer a:hover {
    color: var(--accent);
}