body {
    font-family: Arial, sans-serif;
    max-width: 1000px;
    margin: 0 auto;
    padding: 40px 20px;
    background-color: #1a1a2e;
    color: #e0e0e0;
    min-height: 100vh;
}

.header {
    margin-bottom: 40px;
    text-align: center;
    background: linear-gradient(135deg, #16213e, #0f3460);
    padding: 40px 20px;
    border-radius: 10px;
    border: 1px solid #2a2a4a;
}

.team-info {
    background-color: #16213e;
    padding: 20px;
    margin-bottom: 30px;
    border-radius: 10px;
    border: 1px solid #2a2a4a;
}

.homework-section {
    background-color: #16213e;
    padding: 20px;
    margin-bottom: 20px;
    border-radius: 10px;
    border: 1px solid #2a2a4a;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.homework-section:hover {
    border-color: #e94560;
    box-shadow: 0 0 12px rgba(233, 69, 96, 0.15);
}

h1 {
    margin: 0;
    color: #ffffff;
    font-size: 2.4em;
    letter-spacing: -1px;
}

h2 {
    font-size: 1.5em;
    margin: 0 0 10px 0;
    color: #e94560;
}

h3 {
    margin: 14px 0 6px 0;
    color: #a8a8b3;
    font-size: 0.9em;
    text-transform: uppercase;
    letter-spacing: 1px;
}

ul {
    margin: 8px 0;
    padding-left: 0;
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

a {
    color: #c9d1d9;
    text-decoration: none;
    background: rgba(233, 69, 96, 0.1);
    padding: 5px 12px;
    border-radius: 15px;
    border: 1px solid rgba(233, 69, 96, 0.25);
    font-size: 0.9em;
    transition: background 0.2s, border-color 0.2s, color 0.2s;
}

a:hover {
    background: rgba(233, 69, 96, 0.25);
    border-color: #e94560;
    color: #ffffff;
    text-decoration: none;
}

/* ── 404 Page ── */
.error-container {
    text-align: center;
    padding: 50px 20px;
    min-height: 60vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.error-code {
    font-size: 120px;
    font-weight: bold;
    color: #e94560;
    margin: 0;
    line-height: 1;
}

.error-message {
    font-size: 24px;
    color: #ffffff;
    margin-top: 20px;
}

.error-container p {
    margin: 10px 0;
    font-size: 16px;
    color: #a8a8b3;
}

.error-container a {
    color: #e94560;
    text-decoration: none;
    font-weight: bold;
}

.error-container a:hover {
    color: #ffffff;
    text-decoration: none;
}