@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700&display=swap');

:root {
    --primary-color: #e53935; /* A shade of red from the logo */
    --background-color: #121212;
    --surface-color: #1e1e1e;
    --text-color: #e0e0e0;
    --text-color-light: #b0b0b0;
    --border-radius: 8px;
    --transition-speed: 0.3s;
}

body {
    margin: 0;
    font-family: 'Noto Sans SC', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    font-size: 16px;
}

.container {
    text-align: center;
    padding: 40px;
    max-width: 1200px;
    width: 90%;
}

header {
    margin-bottom: 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.logo {
    max-width: 120px;
    height: auto;
    border-radius: var(--border-radius);
}

h1 {
    font-size: 2.5rem;
    font-weight: 500;
    margin: 0;
    letter-spacing: 2px;
}

.navigation-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin-bottom: 40px;
}

.nav-button {
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: var(--surface-color);
    color: var(--text-color);
    text-decoration: none;
    padding: 25px 20px;
    border-radius: var(--border-radius);
    font-size: 1.25rem;
    font-weight: 400;
    border: 1px solid transparent;
    transition: all var(--transition-speed) ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.nav-button:hover {
    transform: translateY(-5px);
    background-color: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
    box-shadow: 0 6px 20px rgba(229, 57, 53, 0.4);
}

footer {
    margin-top: 40px;
    color: var(--text-color-light);
    font-size: 0.9rem;
}

/* Responsive design */
@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }
    .navigation-grid {
        grid-template-columns: 1fr;
    }
    .nav-button {
        font-size: 1.1rem;
        padding: 20px;
    }
}

/* 404 Page Specific Styles */
.error-content {
    margin: 40px 0;
}

.error-content h2 {
    font-size: 6rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 0;
}

.error-content p {
    font-size: 1.5rem;
    margin: 10px 0 30px;
}

.error-content .nav-button {
    display: inline-block;
    width: auto;
    padding: 15px 40px;
}