.mission-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}
@media (max-width: 768px) {
    .mission-grid {
        grid-template-columns: 1fr;
    }
}
.role-card {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    border-top: 5px solid #ccc;
    display: flex;
    flex-direction: column;
}
.role-card.hack { border-top-color: #e53e3e; }
.role-card.fix { border-top-color: #3182ce; }
.role-card h3 { 
    margin-bottom: 1rem; 
    display: flex; 
    align-items: center; 
    gap: 10px;
    font-size: 1.4rem;
}
.role-card.hack h3 { color: #e53e3e; }
.role-card.fix h3 { color: #3182ce; }

.vulnerable-code {
    background: #2d3748;
    color: #e2e8f0;
    padding: 1.5rem;
    border-radius: 6px;
    font-family: 'Fira Code', 'Courier New', Courier, monospace;
    overflow-x: auto;
    margin-top: 1rem;
    position: relative;
    font-size: 0.9rem;
    line-height: 1.4;
    width: 100%;
    box-sizing: border-box;
}
.vulnerable-code pre {
    margin: 0;
    white-space: pre;
}
.vulnerable-code code {
    display: block;
    width: max-content;
    min-width: 100%;
}
.copy-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    font-size: 0.75rem;
    background: rgba(255,255,255,0.1);
    color: #fff;
    padding: 4px 8px;
    border-radius: 4px;
    cursor: pointer;
    border: 1px solid rgba(255,255,255,0.2);
    transition: all 0.2s;
}
.copy-badge:hover {
    background: rgba(255,255,255,0.2);
}
.mission-objective {
    background: #fff5f5;
    border-left: 4px solid #e53e3e;
    padding: 1rem;
    margin-bottom: 1rem;
    border-radius: 0 4px 4px 0;
}
.fix-objective {
    background: #ebf8ff;
    border-left: 4px solid #3182ce;
    padding: 1rem;
    margin-bottom: 1rem;
    border-radius: 0 4px 4px 0;
}

/* Sandbox Banner */
.sandbox-banner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    background: #f0fff4;
    border: 1px solid #c6f6d5;
    border-left: 4px solid #38a169;
    border-radius: 8px;
    padding: 12px 20px;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    margin-top: -1rem;
}

.sandbox-banner__text {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
    color: #22543d;
}

.sandbox-banner__icon {
    font-size: 1.4rem;
    flex-shrink: 0;
}

.sandbox-banner__text strong { color: #2f855a; }

.sandbox-banner__link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #38a169;
    color: #fff;
    text-decoration: none;
    font-weight: 700;
    font-size: 0.95rem;
    padding: 10px 20px;
    border-radius: 8px;
    white-space: nowrap;
    transition: all 0.15s;
    flex-shrink: 0;
    box-shadow: 0 2px 6px rgba(56,161,105,0.2);
}

.sandbox-banner__link:hover {
    background: #2f855a;
    transform: translateY(-1px);
    box-shadow: 0 4px 10px rgba(56,161,105,0.3);
}

@media (max-width: 500px) {
    .sandbox-banner { flex-direction: column; align-items: flex-start; }
}