:root {
    --bg-dark: #0D1117;
    --bg-secondary: #161B22;
    --border-color: #30363D;
    --text-primary: #C9D1D9;
    --text-secondary: #8B949E;
    --premium-gradient: linear-gradient(45deg, #FC4A1A, #F7B733);
}

body {
    font-family: 'Vazirmatn', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    padding-top: 56px;
}

.section-title {
    font-weight: 700;
    color: white;
}

.hero-section {
    position: relative;
    height: 75vh;
    background-image: url('images/hero-background.jpg');
    background-size: cover;
    background-position: center;
}
.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(13, 17, 23, 0.7);
}
.hero-section .container {
    position: relative;
    z-index: 2;
}

.course-title {
    color: white;
    font-weight: bold;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #8958FA;
    display: inline-block;
}

.accordion {
    --bs-accordion-bg: var(--bg-secondary);
    --bs-accordion-color: var(--text-primary);
    --bs-accordion-border-color: var(--border-color);
    --bs-accordion-btn-focus-box-shadow: 0 0 0 .25rem rgba(137, 88, 250, 0.5);
    --bs-accordion-active-bg: #1f2530;
    --bs-accordion-active-color: white;
}
.accordion-button:not(.collapsed) {
    font-weight: 700;
}
.accordion-body i {
    margin-left: 8px;
}

/* استایل بخش تماس با من */
#contact .form-label {
    color: var(--text-secondary);
}
#contact .form-control {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-primary);
}
#contact .form-control:focus {
    background-color: var(--bg-secondary);
    border-color: #8958FA;
    color: var(--text-primary);
    box-shadow: 0 0 0 .25rem rgba(137, 88, 250, 0.5);
}

.btn-premium-gradient {
    background-image: var(--premium-gradient);
    color: white;
    font-weight: 700;
    border: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.btn-premium-gradient:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 15px rgba(252, 74, 26, 0.4);
    color: white;
}

footer {
    background-color: var(--bg-secondary);
}