/* Requirements Grid */
.req-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 16px;
}

.req-item {
    background: #f9fafb;
    border: 1px solid #e5e7eb;
    padding: 12px 16px;
    border-radius: 8px;
    display: flex; align-items: center; gap: 10px;
    font-weight: 500; font-size: 0.95rem; color: var(--text-main);
}
.req-item.success {
    background: #ecfdf5; border-color: #a7f3d0; color: #065f46;
}
.req-item .check { color: #10b981; font-size: 1.1rem; }

/* Timeline UI */
.timeline-wrapper {
    position: relative;
    padding-left: 20px;
}

.timeline-wrapper::before {
    content: '';
    position: absolute;
    left: 45px;
    top: 20px;
    bottom: 50px;
    width: 2px;
    background: #e5e7eb;
    z-index: 0;
}

.timeline-item {
    display: flex;
    gap: 30px;
    position: relative;
    margin-bottom: 30px;
    z-index: 1;
}

.timeline-marker {
    flex-shrink: 0;
    width: 50px; height: 50px;
    background: var(--primary);
    color: #fff;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 1.2rem;
    box-shadow: 0 0 0 8px var(--bg-body);
}

.timeline-content {
    flex-grow: 1;
}

.timeline-content h4 {
    font-size: 1.1rem; font-weight: 700; margin-bottom: 10px; color: var(--text-main);
}
.timeline-content p {
    color: var(--text-muted); margin-bottom: 15px;
}

/* Alerts and Code */
.alert-box {
    background: #fffbeb;
    border-left: 4px solid #f59e0b;
    padding: 15px;
    border-radius: 4px;
    color: #92400e;
    font-size: 0.95rem;
}

.code-block {
    background: #1e293b;
    border-radius: 8px;
    overflow: hidden;
}

.code-header {
    background: #0f172a;
    color: #94a3b8;
    padding: 10px 16px;
    font-size: 0.8rem; font-weight: 600; text-transform: uppercase;
}

.code-block pre {
    color: #e2e8f0;
    padding: 20px;
    margin: 0;
    font-family: 'Courier New', monospace;
}