:root {
    --bg-color: #0b0f19;
    --card-bg: #151b2c;
    --text-color: #f3f4f6;
    --text-muted: #9ca3af;
    --accent-color: #3b82f6;
    --accent-hover: #2563eb;
    --border-color: #232d45;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    border-bottom: 1px solid var(--border-color);
    padding: 20px 0;
    background-color: rgba(11, 15, 25, 0.8);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    display: flex;
    align-items: center;
    font-weight: 700;
    font-size: 1.2rem;
    letter-spacing: -0.5px;
}

.logo-icon {
    width: 28px;
    height: 28px;
    margin-right: 10px;
}

nav a {
    color: var(--text-muted);
    text-decoration: none;
    margin-left: 24px;
    font-size: 0.95rem;
    transition: color 0.2s ease;
}

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

main {
    flex: 1;
    padding: 60px 0;
}

.hero {
    max-width: 800px;
    margin-bottom: 80px;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -1px;
    margin-bottom: 20px;
    background: linear-gradient(to right, #ffffff, #9ca3af);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 35px;
}

.cta-group {
    display: flex;
    gap: 15px;
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 6px;
    font-weight: 600;
    text-decoration: none;
    font-size: 0.95rem;
    transition: all 0.2s ease;
}

.btn-primary {
    background-color: var(--accent-color);
    color: #ffffff;
}

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

.btn-secondary {
    background-color: transparent;
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.05);
    border-color: var(--text-muted);
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
}

.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 30px;
    border-radius: 8px;
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.card:hover {
    transform: translateY(-2px);
    border-color: rgba(59, 130, 246, 0.4);
}

.card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.project-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.project-item {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 25px;
    border-radius: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.project-info h3 {
    margin-bottom: 5px;
}

.tag {
    display: inline-block;
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--accent-color);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 4px;
    margin-left: 10px;
}

.content-text {
    max-width: 700px;
    font-size: 1.1rem;
    color: var(--text-muted);
}

.content-text p {
    margin-bottom: 20px;
}

footer {
    border-top: 1px solid var(--border-color);
    padding: 30px 0;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.fade-in {
    animation: fadeIn 0.5s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 768px) {
    .nav-container { flex-direction: column; gap: 15px; }
    nav a { margin: 0 10px; }
    .hero h1 { font-size: 2.2rem; }
    .project-item { flex-direction: column; align-items: flex-start; }
}