/* Elegant Design System */
:root {
    /* Refined Color Palette */
    --elegant-primary: #1a1f36;
    --elegant-secondary: #374151;
    --elegant-accent: #d4af37;
    --elegant-light: #f8fafc;
    --elegant-text: #475569;
    --elegant-border: #e5e7eb;
    
    /* Sophisticated Typography */
    --elegant-font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --heading-weight: 600;
    --text-weight: 400;
    
    /* Refined Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 5rem;
}

/* Typography Refinements */
body {
    font-family: var(--elegant-font);
    font-weight: var(--text-weight);
    color: var(--elegant-text);
    line-height: 1.7;
    letter-spacing: -0.01em;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: var(--heading-weight);
    color: var(--elegant-primary);
    line-height: 1.2;
    letter-spacing: -0.02em;
}

/* Elegant Course Cards */
.course-card {
    border: 1px solid var(--elegant-border);
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    overflow: hidden;
}

.course-card:hover {
    box-shadow: 0 12px 24px rgba(0,0,0,0.08);
    transform: translateY(-4px);
    border-color: var(--elegant-accent);
}

.course-highlight {
    background: linear-gradient(135deg, var(--elegant-light), white);
    padding: 1.5rem;
    border-top: 1px solid var(--elegant-border);
    display: flex;
    align-items: center;
    gap: 1rem;
    font-weight: 500;
    color: var(--elegant-primary);
}

.course-highlight i {
    color: var(--elegant-accent);
    font-size: 1.25rem;
}

/* Refined Buttons */
.btn {
    font-weight: 500;
    letter-spacing: -0.01em;
    padding: 0.875rem 2rem;
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    border-radius: 0.5rem;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: rgba(255,255,255,0.2);
    transition: left 0.3s ease;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--elegant-primary);
    color: white;
    border: 2px solid var(--elegant-primary);
}

.btn-primary:hover {
    background: transparent;
    color: var(--elegant-primary);
}

.btn-secondary {
    background: transparent;
    color: var(--elegant-primary);
    border: 2px solid var(--elegant-border);
}

.btn-secondary:hover {
    border-color: var(--elegant-primary);
    background: var(--elegant-primary);
    color: white;
}

/* Elegant Timeline */
.process-timeline {
    position: relative;
    padding: 2rem 0;
}

.process-timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, transparent, var(--elegant-border), transparent);
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    align-items: center;
    margin-bottom: 3rem;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.timeline-item.active {
    opacity: 1;
    transform: translateY(0);
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
}

.timeline-icon {
    width: 60px;
    height: 60px;
    background: white;
    border: 2px solid var(--elegant-border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    z-index: 1;
    transition: all 0.3s ease;
}

.timeline-item.active .timeline-icon {
    border-color: var(--elegant-accent);
    background: var(--elegant-light);
}

.timeline-icon i {
    font-size: 1.5rem;
    color: var(--elegant-primary);
}

.timeline-content {
    flex: 1;
    padding: 0 2rem;
}

.timeline-content h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--elegant-primary);
}

.timeline-content p {
    color: var(--elegant-text);
    margin: 0;
}

/* Elegant Section Headers */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--elegant-accent);
}

.section-header p {
    font-size: 1.125rem;
    color: var(--elegant-text);
    max-width: 600px;
    margin: 1.5rem auto 0;
}

/* Elegant Form Elements */
input[type="text"],
input[type="email"],
input[type="tel"],
select,
textarea {
    border: 1px solid var(--elegant-border);
    background: white;
    padding: 0.875rem 1.25rem;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-family: var(--elegant-font);
    transition: all 0.3s ease;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--elegant-accent);
    box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.1);
}

/* Elegant Trust Badges */
.trust-badges {
    display: flex;
    justify-content: center;
    gap: 3rem;
    padding: 3rem 0;
    border-top: 1px solid var(--elegant-border);
    border-bottom: 1px solid var(--elegant-border);
}

.badge-item {
    text-align: center;
    opacity: 0.8;
    transition: all 0.3s ease;
}

.badge-item:hover {
    opacity: 1;
    transform: scale(1.05);
}

.badge-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--elegant-light);
}

.badge-icon i {
    font-size: 1.75rem;
    color: var(--elegant-accent);
}

/* Elegant Gallery */
.gallery-item {
    overflow: hidden;
    border-radius: 0.75rem;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.gallery-item:hover {
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}

.gallery-overlay {
    background: linear-gradient(to top, rgba(26, 31, 54, 0.9), transparent);
    backdrop-filter: blur(2px);
}

/* Elegant Testimonials */
.testimonial-card {
    background: white;
    border: 1px solid var(--elegant-border);
    padding: 2rem;
    border-radius: 0.75rem;
    position: relative;
}

.testimonial-card::before {
    content: '"';
    position: absolute;
    top: 1rem;
    left: 1.5rem;
    font-size: 4rem;
    color: var(--elegant-accent);
    opacity: 0.2;
    font-family: Georgia, serif;
}

/* Elegant Animations */
@keyframes elegantFadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.elegant-fade-in {
    animation: elegantFadeIn 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}

/* Subtle Hover Effects */
.hover-elegant {
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.hover-elegant:hover {
    transform: translateY(-2px);
}

/* Refined Spacing */
.elegant-spacing {
    padding: var(--spacing-xl) 0;
}

.elegant-spacing-sm {
    padding: var(--spacing-lg) 0;
}

/* Mobile Elegance */
@media (max-width: 768px) {
    :root {
        --spacing-xl: 3rem;
        --spacing-lg: 2rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .process-timeline::before {
        left: 30px;
    }
    
    .timeline-item,
    .timeline-item:nth-child(even) {
        flex-direction: row;
    }
    
    .timeline-content {
        padding-left: 1.5rem;
    }
}