:root {
    --bg-color: #0f172a;
    --text-color: #e2e8f0;
    --accent-color: #38bdf8;
    --accent-hover: #0ea5e9;
    --card-bg: #1e293b;
    --header-height: 70px;
    --container-width: 1000px;
    --font-primary: 'Inter', sans-serif;
}

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

body {
    font-family: var(--font-primary);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

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

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

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.site-header {
    height: var(--header-height);
    display: flex;
    align-items: center;
    position: sticky;
    top: 0;
    background-color: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(10px);
    z-index: 100;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.site-title {
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--text-color);
}

.site-nav a {
    margin-left: 20px;
    font-weight: 600;
    color: var(--text-color);
}

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

/* Hero Section */
.hero {
    padding: 100px 0;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    background: linear-gradient(to right, #38bdf8, #818cf8);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.25rem;
    color: #94a3b8;
    max-width: 600px;
    margin: 0 auto 40px;
}

.cta-button {
    display: inline-block;
    background-color: var(--accent-color);
    color: #0f172a;
    padding: 12px 30px;
    border-radius: 5px;
    font-weight: 700;
    transition: transform 0.2s, background-color 0.2s;
}

.cta-button:hover {
    transform: translateY(-2px);
    background-color: var(--accent-hover);
    color: #0f172a;
}

/* Projects Grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.project-card {
    background-color: var(--card-bg);
    border-radius: 10px;
    padding: 30px;
    transition: transform 0.2s, box-shadow 0.2s;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    border-color: var(--accent-color);
}

.project-card h3 {
    margin-bottom: 15px;
    font-size: 1.5rem;
}

.project-card p {
    color: #94a3b8;
    margin-bottom: 20px;
}

/* Footer */
.site-footer {
    padding: 50px 0;
    text-align: center;
    color: #64748b;
    margin-top: 100px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
}