:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --bg-dark: #ffffff;
    --bg-card: #f8fafc;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --font-heading: 'Merriweather', serif;
    --font-body: 'Inter', sans-serif;
}

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

body {
    font-family: var(--font-body);
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

main {
    flex: 1;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--text-main);
    margin-bottom: 1rem;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--primary-hover);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Header */
header {
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 1rem 0;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 800;
    font-family: var(--font-heading);
    color: var(--text-main);
    text-decoration: none;
}

.logo-highlight {
    color: var(--primary);
}

.logo-icon {
    color: var(--primary);
}

.nav-links {
    display: flex;
    gap: 1.5rem;
}

.nav-links a {
    color: var(--text-muted);
    font-weight: 500;
}

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

/* Hero Section */
.hero {
    padding: 4rem 0;
    text-align: center;
    border-bottom: 1px solid var(--border);
    background: linear-gradient(to bottom, #eff6ff 0%, #ffffff 100%);
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    background: linear-gradient(to right, #2563eb, #7c3aed);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* Newsletter */
.newsletter {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 12px;
    margin: 2rem 0;
    text-align: center;
    border: 1px solid var(--border);
}

.newsletter-form {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 1.5rem;
    flex-wrap: wrap;
}

.newsletter-input {
    padding: 0.75rem 1rem;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: #fff;
    color: var(--text-main);
    width: 300px;
    max-width: 100%;
}

.btn {
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    border: none;
    background: var(--primary);
    color: #fff;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.btn:hover {
    background: var(--primary-hover);
}

/* Grid */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    padding: 2rem 0;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    opacity: 1;
}

.card-content {
    padding: 1.5rem;
}

.card-date {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    display: block;
}

.card-title {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    line-height: 1.4;
    color: var(--text-main);
}

.card-excerpt {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Article Page */
.article-header {
    text-align: center;
    padding: 3rem 0;
}

.article-meta {
    color: var(--text-muted);
    margin-top: 1rem;
}

.article-image {
    width: 100%;
    max-height: 500px;
    object-fit: cover;
    border-radius: 12px;
    margin-bottom: 3rem;
}

.article-content {
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.1rem;
    line-height: 1.8;
}

.article-content p {
    margin-bottom: 1.5rem;
    color: var(--text-main);
}

.article-content h2 {
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-main);
}

.article-content ul {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
    color: var(--text-main);
}

.article-content li {
    margin-bottom: 0.5rem;
}

/* Footer */
footer {
    background-color: #0f172a;
    color: #f8fafc;
    padding: 4rem 0 2rem;
    margin-top: 4rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand h3 {
    color: #fff;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.footer-text {
    color: #94a3b8;
    margin-bottom: 1.5rem;
}

.footer-subscribe h4 {
    color: #fff;
    margin-bottom: 1rem;
}

.footer-form {
    display: flex;
    gap: 0.5rem;
}

.footer-input {
    padding: 0.5rem 1rem;
    border-radius: 4px;
    border: 1px solid #334155;
    background: #1e293b;
    color: #fff;
    flex: 1;
}

.footer-btn {
    padding: 0.5rem 1rem;
    border-radius: 4px;
    border: none;
    background: var(--primary);
    color: #fff;
    cursor: pointer;
    font-weight: 600;
}

.footer-btn:hover {
    background: var(--primary-hover);
}

.footer-bottom {
    border-top: 1px solid #334155;
    padding-top: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-links a {
    color: #94a3b8;
    margin-left: 1.5rem;
}

.footer-links a:hover {
    color: #fff;
}