:root {
    --main: #1f2c9c;
    --main-light: #2f80ed;
    --bg: #f8fafc;
    --white: #ffffff;
    --text-dark: #0f172a;
    --text-muted: #64748b;
    --card-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.05), 0 10px 10px -5px rgba(0, 0, 0, 0.02);
    --primary-gradient: linear-gradient(135deg, #1f2c9c 0%, #2f80ed 100%);
}

body {
    font-family: 'Cairo', sans-serif;
    background: var(--bg);
    padding-top: 80px;
    color: var(--text-dark);
}

/* Page Header with sophisticated design */
.page-header {
    background: var(--primary-gradient);
    color: white;
    padding: 100px 0;
    border-radius: 0 0 60px 60px;
    margin-bottom: 80px;
    box-shadow: 0 15px 40px rgba(31, 44, 156, 0.2);
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: -50px;
    right: -50px;
    width: 200px;
    height: 200px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
}

.page-header::after {
    content: '';
    position: absolute;
    bottom: -30px;
    left: 10%;
    width: 120px;
    height: 120px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 50%;
}

.page-header h1 {
    font-weight: 900;
    letter-spacing: -1px;
}

/* Instructor Card - Premium Design */
.instructor-card {
    background: var(--white);
    border-radius: 32px;
    padding: 40px 25px;
    text-align: center;
    box-shadow: var(--card-shadow);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(226, 232, 240, 0.8);
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    z-index: 1;
}

.instructor-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--primary-gradient);
    border-radius: 32px;
    opacity: 0;
    z-index: -1;
    transition: opacity 0.5s ease;
}

.instructor-card:hover {
    transform: translateY(-15px) scale(1.02);
    box-shadow: 0 30px 60px rgba(31, 44, 156, 0.15);
}

.instructor-photo-wrapper {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    padding: 8px;
    background: var(--white);
    margin-bottom: 25px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
    position: relative;
    transition: transform 0.5s ease;
}

.instructor-card:hover .instructor-photo-wrapper {
    transform: rotate(5deg);
}

.instructor-photo {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid #f1f5f9;
}

.instructor-name {
    font-weight: 800;
    font-size: 1.4rem;
    margin-bottom: 8px;
    color: var(--text-dark);
    transition: color 0.3s ease;
}

.instructor-title {
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 25px;
    padding: 4px 15px;
    background: #f1f5f9;
    border-radius: 20px;
}

.instructor-bio {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 30px;
    max-width: 200px;
}

.instructor-actions {
    margin-top: auto;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.btn-instructor {
    width: 100%;
    border-radius: 16px;
    font-weight: 800;
    padding: 14px;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    border: none;
}

.btn-contact {
    background: #f8fafc;
    color: var(--main);
    border: 1px solid #e2e8f0;
}

.btn-contact:hover {
    background: var(--main);
    color: white;
    border-color: var(--main);
}

.btn-courses {
    background: var(--primary-gradient);
    color: white;
    box-shadow: 0 8px 20px rgba(31, 44, 156, 0.2);
}

.btn-courses:hover {
    box-shadow: 0 12px 25px rgba(31, 44, 156, 0.3);
    transform: scale(1.02);
}

/* Decoration for grid */
.instructors-section {
    padding-bottom: 100px;
}

@media (max-width: 768px) {
    .page-header {
        padding: 70px 0;
        border-radius: 0 0 40px 40px;
    }
    .page-header h1 {
        font-size: 2rem;
    }
}