:root {
    --bg-color: #121212;
    --surface-color: #1e1e1e;
    --primary-color: #03dac6;
    --on-primary-color: #000;
    --text-color: #e0e0e0;
    --border-color: #333;
}

body {
    margin: 0;
    font-family: 'Roboto', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1.5rem;
    background-color: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
}

.app-header h1 {
    font-size: 1.5rem;
    margin: 0;
    font-weight: 500;
}

.nav-btn {
    background: var(--primary-color);
    color: var(--on-primary-color);
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    cursor: pointer;
    text-decoration: none;
    font-weight: 500;
    transition: background-color 0.2s ease;
}

.nav-btn:hover {
    text-decoration: none;
    filter: brightness(0.9);
}

.container {
    max-width: 800px;
    margin: 2rem auto;
    padding: 2rem;
}

.container h1,
.container h2 {
    color: var(--primary-color);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.container h1 {
    font-size: 2rem;
}

.container a {
    color: var(--primary-color);
    text-decoration: none;
}

.container a:hover {
    text-decoration: underline;
}

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

a:hover {
    text-decoration: underline;
}

footer {
    text-align: center;
    padding: 3rem 1rem 2rem 1rem;
}

.footer-home-btn {
    display: inline-block;
    background: var(--primary-color);
    color: var(--on-primary-color);
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 500;
    transition: filter 0.2s ease;
}

.footer-home-btn:hover {
    text-decoration: none;
    filter: brightness(0.9);
}