:root {
    --bg-color: #f8fafc;
    --text-color: #0f172a;
    --card-bg: #ffffff;
    --card-border: #e2e8f0;
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --muted-text: #64748b;
    --nav-bg: rgba(248, 250, 252, 0.85);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

[data-theme="dark"] {
    --bg-color: #0f172a;
    --text-color: #f8fafc;
    --card-bg: #1e293b;
    --card-border: #334155;
    --primary-color: #60a5fa;
    --primary-hover: #3b82f6;
    --muted-text: #94a3b8;
    --nav-bg: rgba(15, 23, 42, 0.85);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--nav-bg);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--card-border);
    z-index: 1000;
}

.nav-container {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 2rem;
}

.logo-link {
    display: flex;
    align-items: center;
}

.nav-logo {
    height: 60px;
    width: auto;
    object-fit: contain;
    transition: transform 0.2s ease;
}

.nav-logo:hover {
    transform: scale(1.5);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    color: var(--muted-text);
    font-weight: 500;
    font-size: 0.95rem;
}

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

.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.2rem;
    padding: 0.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

main {
    max-width: 1000px;
    margin: 0 auto;
    padding: 8rem 2rem 4rem 2rem;
}

.blog-header {
    text-align: center;
    margin-bottom: 4rem;
}

.blog-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.blog-header p {
    color: var(--muted-text);
    font-size: 1.1rem;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.blog-card {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
}

.blog-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.blog-card-img {
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 600;
    font-size: 1.1rem;
    padding: 1rem;
    text-align: center;
}

.blog-card-content {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.blog-date {
    font-size: 0.85rem;
    color: var(--muted-text);
    margin-bottom: 0.5rem;
}

.blog-card-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-color);
}

.blog-card-content p {
    font-size: 0.95rem;
    color: var(--muted-text);
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.read-more {
    text-decoration: none;
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.95rem;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

footer {
    text-align: center;
    padding: 3rem 2rem;
    color: var(--muted-text);
    font-size: 0.9rem;
    border-top: 1px solid var(--card-border);
    margin-top: 4rem;
}