.glass-card {
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 24px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.6), inset 0 -1px 0 rgba(255, 255, 255, 0.2);
    overflow: hidden;
    margin-bottom: 2rem;
    position: relative;
}

.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.8) 50%, transparent 100%);
}

.glass-header {
    background: linear-gradient(135deg, rgba(74, 108, 247, 0.9) 0%, rgba(74, 108, 247, 0.7) 100%);
    backdrop-filter: blur(10px);
    padding: 1.5rem 2rem;
    position: relative;
    overflow: hidden;
}

    .glass-header::after {
        content: '';
        position: absolute;
        top: -50%;
        right: -50%;
        width: 100%;
        height: 200%;
        background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    }

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    z-index: 1;
}

.title-section {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.header-icon {
    font-size: 2rem;
    color: rgba(255, 255, 255, 0.9);
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
}

.glass-title {
    color: white;
    font-weight: 700;
    margin: 0;
    font-size: 1.5rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.glass-subtitle {
    color: rgba(255, 255, 255, 0.8);
    margin: 0;
    font-size: 0.9rem;
    font-weight: 400;
}

.status-badge {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.status-dot {
    width: 8px;
    height: 8px;
    background: #00ff88;
    border-radius: 50%;
    box-shadow: 0 0 10px #00ff88;
    animation: pulse 2s infinite;
}

.glass-body {
    padding: 2.5rem;
}

.course-hero {
    text-align: center;
    margin-bottom: 2.5rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
}

.course-name {
    font-size: 2rem;
    font-weight: 800;
    background: linear-gradient(135deg, #2c3e50 0%, #3498db 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.course-intro {
    font-size: 1.1rem;
    color: #6c757d;
    line-height: 1.6;
    max-width: 600px;
    margin: 0 auto;
}

.details-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.detail-column {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.glass-tile {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 16px;
    padding: 1.5rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

    .glass-tile::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 1px;
        background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.6) 50%, transparent 100%);
    }

    .glass-tile:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.8);
        border-color: rgba(255, 255, 255, 0.4);
    }

    .glass-tile.highlight {
        background: linear-gradient(135deg, rgba(52, 152, 219, 0.15) 0%, rgba(155, 89, 182, 0.15) 100%);
        border: 1px solid rgba(52, 152, 219, 0.3);
    }

.detail-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.detail-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    flex-shrink: 0;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.glass-tile.highlight .detail-icon {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.detail-content {
    flex: 1;
}

    .detail-content label {
        font-size: 0.8rem;
        text-transform: uppercase;
        color: #6c757d;
        font-weight: 600;
        letter-spacing: 0.5px;
        margin-bottom: 0.5rem;
        display: block;
    }

.date-range {
    display: flex;
    align-items: center;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.venue-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.venue-name {
    font-weight: 600;
    color: #2c3e50;
    font-size: 1.1rem;
}

.venue-location {
    font-size: 0.9rem;
    color: #6c757d;
}

.price-display {
    margin-bottom: 0.5rem;
}

.price-amount {
    font-size: 1.8rem;
    font-weight: 800;
    background: linear-gradient(135deg, #27ae60 0%, #2ecc71 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.price-unit {
    font-size: 0.9rem;
    color: #6c757d;
    margin-left: 0.5rem;
}

.capacity-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.capacity-count {
    font-size: 1.5rem;
    font-weight: 700;
    color: #2c3e50;
}

.capacity-unlimited {
    font-size: 1.3rem;
    font-weight: 700;
    color: #27ae60;
}

.capacity-label {
    font-size: 0.9rem;
    color: #6c757d;
}

.detail-meta {
    font-size: 0.8rem;
    color: #6c757d;
    margin-top: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.additional-info {
    border-top: 1px solid rgba(255, 255, 255, 0.3);
    padding-top: 1.5rem;
}

.info-tags {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.info-tag {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: #2c3e50;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 500;
    display: flex;
    align-items: center;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }

    50% {
        opacity: 0.7;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .details-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .glass-body {
        padding: 1.5rem;
    }

    .header-content {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }

    .course-name {
        font-size: 1.5rem;
    }

    .info-tags {
        justify-content: flex-start;
    }
}

@media (max-width: 480px) {
    .detail-item {
        flex-direction: column;
        text-align: center;
    }

    .detail-icon {
        align-self: center;
    }

    .date-range {
        flex-direction: column;
        gap: 0.5rem;
    }
}