body {
    margin: 0;
    font-family: "Vazirmatn", sans-serif;
    color: #fff;
    overflow-x: hidden;
}

/* پس زمینه canvas */
#bgCanvas {
    position: fixed;
    inset: 0;
    z-index: -1;
}

/* هدر */
.page-header {
    text-align: center;
    padding: 60px 20px 30px;
}

.page-header h1 {
    font-size: 2.4rem;
    margin-bottom: 10px;
}

.subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* گرید کارت‌ها */
.portfolio-grid {
    display: grid;
    gap: 20px;
    padding: 20px;
    width: min(1200px, 90%);
    margin: auto;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* کارت نمونه */
.card {
    background: rgba(255, 255, 255, 0.07);
    backdrop-filter: blur(10px);
    border-radius: 14px;
    padding: 15px;
    text-align: center;
    transition: 0.3s ease;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

.card:hover {
    transform: translateY(-8px);
    background: rgba(255, 255, 255, 0.12);
}

.card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-radius: 10px;
}

.card h3 {
    margin: 12px 0 6px;
    font-size: 1.2rem;
}

.card p {
    font-size: 0.9rem;
    opacity: 0.9;
}