:root {
    --bg-color: #0d1117;
    --text-color: #c9d1d9;
    --primary-color: #58a6ff;
    --secondary-color: #8b949e;
    --accent-color: #238636;
    --card-bg: #161b22;
    --border-color: #30363d;
    --font-heading: 'Inter', sans-serif;
    --font-body: 'Inter', sans-serif;
}

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

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

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #79c0ff;
}

/* Header */
header {
    background-color: var(--card-bg);
    border-bottom: 2px solid var(--border-color);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    background-color: rgba(22, 27, 34, 0.9);
}

.logo {
    font-weight: 800;
    font-size: 1.5rem;
    color: #fff;
    letter-spacing: -0.5px;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 1.5rem;
}

nav a {
    color: var(--secondary-color);
    font-weight: 500;
    font-size: 0.95rem;
}

nav a:hover, nav a.active {
    color: #fff;
}

/* Main Content */
main {
    flex: 1;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    padding: 2rem;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 4rem 1rem;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #fff 0%, #8b949e 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -1px;
}

.hero p {
    font-size: 1.25rem;
    color: var(--secondary-color);
    margin-bottom: 2rem;
}

.cta-button {
    display: inline-block;
    background-color: var(--accent-color);
    color: #fff;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    font-weight: 600;
    transition: background-color 0.2s;
}

.cta-button:hover {
    background-color: #2ea043;
    color: #fff;
}

/* Grid Layout for Content */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    transition: transform 0.2s, border-color 0.2s;
}

.card:hover {
    transform: translateY(-4px);
    border-color: var(--secondary-color);
}

.card h2 {
    margin-bottom: 0.5rem;
    font-size: 1.25rem;
    color: #fff;
}

.card p {
    color: var(--secondary-color);
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.card .date {
    font-size: 0.8rem;
    color: var(--secondary-color);
    display: block;
    margin-bottom: 0.5rem;
}

/* Page Header */
.page-header {
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1rem;
}

.page-header h1 {
    font-size: 2.5rem;
    color: #fff;
}

/* Form Styles */
form {
    max-width: 500px;
    margin: 0 auto;
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.form-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

input[type="email"],
input[type="text"] {
    width: 100%;
    padding: 0.75rem;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-color);
    color: #fff;
    font-family: inherit;
}

input:focus {
    outline: 2px solid var(--primary-color);
    border-color: transparent;
}

button[type="submit"] {
    width: 100%;
    padding: 0.75rem;
    border: none;
    border-radius: 6px;
    background-color: var(--primary-color);
    color: #fff;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s;
}

button[type="submit"]:hover {
    opacity: 0.9;
}

/* Footer */
footer {
    margin-top: auto;
    border-top: 1px solid var(--border-color);
    padding: 2rem;
    text-align: center;
    color: var(--secondary-color);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    header {
        flex-direction: column;
        gap: 1rem;
    }
    
    nav ul {
        gap: 1rem;
    }
}