/* Contribute Hero Section */
/* Contribute Hero Section */
.contribute-hero {
    padding: 6rem 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); /* رنگ‌بندی اصلاح شد */
    color: var(--white);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.contribute-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><circle cx="50" cy="50" r="1" fill="white" opacity="0.1"/></svg>');
    opacity: 0.3;
}

.contribute-hero-content {
    max-width: 52rem;
    margin: 0 auto;
}
.contribute-label {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
}
.contribute-hero h1 {
    font-size: 3rem;
    font-weight: 900;
    margin-bottom: 1.5rem;
}
.contribute-lead {
    font-size: 1.25rem;
    opacity: 0.85;
    line-height: 1.7;
}

/* Contribution Paths Grid */
.contribution-grid {
    display: grid;
    gap: 2rem;
    max-width: 72rem;
    margin: 0 auto;
    grid-template-columns: 1fr;
}

.contribution-card {
    background: linear-gradient(135deg, #f5f3ff 0%, #eff6ff 100%); /* گرادیان پس‌زمینه اضافه شد */
    padding: 3rem;
    border-radius: 1rem;
    position: relative;
    overflow: hidden;
    border: none; /* حذف border قبلی */
}

.contribution-card:hover {
    transform: none; /* حذف افکت هاور قبلی */
    box-shadow: none;
}

.contribution-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(124, 58, 237, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    transform: translate(30%, -30%);
}

.contrib-icon {
    width: 4rem;
    height: 4rem;
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.contrib-icon {
    width: 3.5rem;
    height: 3.5rem;
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}
.contrib-icon .material-symbols-outlined {
    font-size: 2rem;
    color: var(--white);
}
.icon-innovate { background: linear-gradient(135deg, var(--purple-600), var(--indigo-600)); }
.icon-code { background: linear-gradient(135deg, var(--blue-600), #60a5fa); }
.icon-feedback { background: linear-gradient(135deg, var(--orange-600), #fb923c); }
.icon-design { background: linear-gradient(135deg, var(--rose-600), #f472b6); }

.contribution-card h2 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
}
.contribution-card p {
    color: var(--gray-600);
    margin-bottom: 1.5rem;
}
.contrib-details h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--gray-200);
    padding-bottom: 0.5rem;
}
.contrib-details ul {
    list-style: none;
    padding: 0;
    font-size: 0.9rem;
}
.contrib-details li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    color: var(--gray-700);
}
.contrib-details .material-symbols-outlined {
    font-size: 1.25rem;
    color: var(--purple-600);
}

/* How to Start Section */
.how-to-start-section {
    background-color: var(--gray-50);
}
.start-steps-grid {
    display: grid;
    gap: 2rem;
    grid-template-columns: 1fr;
    max-width: 72rem;
    margin: 0 auto;
}
.step-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 1rem;
    border: 1px solid var(--gray-200);
    position: relative;
}
.step-number {
    position: absolute;
    top: -1.25rem;
    right: 2rem;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--purple-600), var(--blue-600));
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 700;
}
.step-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    margin-top: 1rem;
}
.step-card p {
    color: var(--gray-600);
}

/* Responsive */
@media (min-width: 768px) {
    .contribution-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .start-steps-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}
@media (min-width: 1024px) {
    .contribute-hero h1 { font-size: 4rem; }
}