/* Custom UX/UI Improvements for Hugo Course Portal */

:root {
    --accent-color: #0056b3;
    --card-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-blur: blur(8px);
}

/* Glassmorphism for Sidebar */
#sidebar {
    background: var(--glass-bg) !important;
    backdrop-filter: var(--glass-blur);
    border-right: 1px solid rgba(255, 255, 255, 0.3);
}

/* Premium Cards for Course Grid */
.course-card {
    background: white;
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: var(--card-shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #e0e0e0;
}

.course-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    border-color: var(--accent-color);
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.main-content {
    animation: fadeIn 0.8s ease-out;
}

/* Typography */
body {
    font-family: 'Inter', sans-serif;
}

h1, h2, h3 {
    color: #1a1a1a;
    font-weight: 700;
}

/* Improved PDF and Slides buttons */
.btn-slide {
    display: inline-block;
    padding: 10px 20px;
    background: var(--accent-color);
    color: white !important;
    border-radius: 8px;
    text-decoration: none !important;
    font-weight: 600;
    margin-top: 10px;
    transition: background 0.3s;
}

.btn-slide:hover {
    background: #004494;
}