:root {
    --bg-dark: #0a0a0c;
    --card-dark: #121216;
    --text-light: #e4e4e7;
    --text-muted: #a1a1aa;
    --accent-blue: #2563eb;
    --accent-hover: #3b82f6;
    --border-color: #27272a;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-light);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--border-color);
    background-color: rgba(10, 10, 12, 0.8);
    backdrop-filter: blur(8px);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

nav a {
    color: var(--text-muted);
    text-decoration: none;
    margin-left: 1.5rem;
    font-size: 0.95rem;
    transition: color 0.2s ease;
}

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

.container {
    max-width: 900px;
    margin: 4rem auto;
    padding: 0 2rem;
}

h1 {
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-top: 3rem;
    margin-bottom: 1rem;
    border-left: 3px solid var(--accent-blue);
    padding-left: 0.75rem;
}

p {
    color: var(--text-muted);
    font-size: 1.05rem;
    margin-bottom: 1.5rem;
}

strong {
    color: var(--text-light);
}

.btn {
    display: inline-block;
    background-color: var(--accent-blue);
    color: #ffffff;
    text-decoration: none;
    padding: 0.75rem 1.5rem;
    border-radius: 4px;
    font-weight: 600;
    transition: background-color 0.2s ease;
    border: none;
    cursor: pointer;
}

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

.grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin: 2rem 0;
}

@media (min-width: 768px) {
    .grid { grid-template-columns: 1fr 1fr; }
}

.card {
    background-color: var(--card-dark);
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    border-radius: 6px;
}

.card h3 {
    margin-top: 0;
    color: var(--text-light);
}

form {
    background-color: var(--card-dark);
    border: 1px solid var(--border-color);
    padding: 2rem;
    border-radius: 6px;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

input, select, textarea {
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    color: var(--text-light);
    padding: 0.75rem;
    border-radius: 4px;
    font-size: 1rem;
}

input:focus, select:focus, textarea:focus {
    outline: 1px solid var(--accent-blue);
    border-color: var(--accent-blue);
}

footer {
    text-align: center;
    padding: 4rem 2rem 2rem;
    color: var(--text-muted);
    font-size: 0.85rem;
    border-top: 1px solid var(--border-color);
    margin-top: 6rem;
}