/* assets/css/index.css */

/* Base Styles */
body { 
    font-family: 'Kanit', sans-serif; 
    background-color: #f8fafc; 
    color: #333;
}

/* Teacher Navbar */
.teacher-nav {
    background-color: #ffffff;
    box-shadow: 0 2px 15px rgba(0,0,0,0.05);
    padding: 15px 0;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    color: white;
    padding: 60px 20px;
    border-radius: 0 0 40px 40px;
    margin-bottom: 50px;
    box-shadow: 0 10px 30px rgba(79, 70, 229, 0.3);
}

/* Modern Lesson Card Design */
.lesson-card {
    background: #ffffff;
    border-radius: 24px;
    border: none;
    overflow: hidden;
    box-shadow: 0 10px 20px rgba(0,0,0,0.04);
    transition: all 0.3s ease;
    position: relative;
}

.lesson-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

/* Cover Image Wrapper */
.card-img-wrapper {
    position: relative;
    padding-top: 56.25%; /* 16:9 Aspect Ratio */
    overflow: hidden;
    background-color: #000; 
}

.card-img-top {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.lesson-card:hover .card-img-top {
    transform: scale(1.05); /* Zoom effect on hover */
}

/* Play Action Button */
.btn-play {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    border-radius: 12px;
    padding: 12px 20px;
    font-weight: 600;
    font-size: 1.1rem;
    border: none;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
    transition: all 0.2s ease;
}

.btn-play:hover {
    background: linear-gradient(135deg, #059669 0%, #047857 100%);
    color: white;
    transform: scale(1.02);
}