/**
 * LMS IMTA Shortcodes CSS
 * CSS cho các shortcodes của plugin
 */

/* ==========================================================================
   COURSES BY CATEGORY SHORTCODE
   ========================================================================== */

.lms-courses-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

/* Khung thẻ khóa học */
.course-item {
    width: 100%;
    background-color: #ffffff;
    border: 2px solid #f58532;
    border-radius: 12px;
    position: relative;
    overflow: visible;
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.08);
    transition: transform 0.2s ease;
    padding: 8px;
}

.course-item:hover {
    transform: translateY(-5px);
}

/* Hình ảnh trang trí (Bánh chưng) */
.course-item .theme-decoration {
    position: absolute;
    bottom: -15px;
    left: -8px;
    width: 56px;
    height: 70px;
    z-index: 10;
    pointer-events: none;
}

.course-item .theme-decoration img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

/* Phần ảnh đại diện (Avatar) */
.course-item-avatar {
    position: relative;
    width: 100%;
    padding-top: 56.25%;
    border-radius: 10px;
    overflow: hidden;
}

.course-item-avatar>a {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: block;
}

.course-item-avatar>a img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.course-item:hover .course-item-avatar>a img {
    transform: scale(1.05);
}

/* Lớp phủ Hover */
.hover-actions {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 10px;
    opacity: 0;
    transition: opacity 0.3s ease;
    backdrop-filter: blur(2px);
}

.course-item-avatar:hover .hover-actions {
    opacity: 1;
}

.action-btn {
    background: #fff;
    border: none;
    padding: 8px 20px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    color: #333;
    transition: all 0.2s;
    min-width: 120px;
    text-decoration: none;
    text-align: center;
}

.action-btn:hover {
    background: #f58532;
    color: #fff;
}

/* Phần thông tin (Info) */
.course-item-info {
    padding: 16px;
}

.course-title {
    font-size: 16px;
    font-weight: 700;
    color: #222;
    margin-bottom: 10px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    height: 50px;
}

.course-title a {
    color: inherit;
    text-decoration: none;
}

.course-title a:hover {
    color: #f58532;
}

/* Tag (Video) */
.course-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background-color: red;
    color: #fff;
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 12px;
}

.course-tag svg {
    width: 14px;
    height: 14px;
    fill: currentColor;
}

/* Footer */
.course-footer {
    border-top: 1px dashed #ddd;
    padding-top: 12px;
    text-align: right;
    margin-top: 8px;
}

/* Nút Xem ngay */
.btn-view-now {
    display: inline-block;
    background: #f58532;
    color: #fff;
    padding: 5px 19px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
}

.btn-view-now:hover {
    background: #e67520;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(245, 133, 50, 0.4);
    color: #fff;
}

/* No Courses Message */
.lms-no-courses {
    text-align: center;
    padding: 40px;
    color: #666;
    font-size: 16px;
}

/* Grid column variations */
.lms-courses-grid.columns-2 {
    grid-template-columns: repeat(2, 1fr);
}

.lms-courses-grid.columns-3 {
    grid-template-columns: repeat(3, 1fr);
}

.lms-courses-grid.columns-4 {
    grid-template-columns: repeat(4, 1fr);
}

.lms-courses-grid.columns-5 {
    grid-template-columns: repeat(5, 1fr);
}

.lms-courses-grid.columns-6 {
    grid-template-columns: repeat(6, 1fr);
}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */

/* Tablet (<=1024px) - 3 cột */
@media (max-width: 1500px) {

    .lms-courses-grid,
    .lms-courses-grid.columns-4,
    .lms-courses-grid.columns-5,
    .lms-courses-grid.columns-6 {
        grid-template-columns: repeat(3, 1fr);
    }

    .course-title {
        font-size: 16px;;
    }
}

/* Mobile (<=768px) - 2 cột */
@media (max-width: 768px) {

    .lms-courses-grid,
    .lms-courses-grid.columns-2,
    .lms-courses-grid.columns-3,
    .lms-courses-grid.columns-4,
    .lms-courses-grid.columns-5,
    .lms-courses-grid.columns-6 {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }

    .course-item-info {
        padding: 12px;
    }

    .course-title {
        font-size: 15px;
        height: 42px;
    }

    .course-item .theme-decoration {
        width: 50px;
        height: 50px;
        bottom: 0px;
        left: -3px;
    }

    .btn-view-now {
        padding: 5px 16px;
        font-size: 13px;
    }
}

/* Small Mobile (<=480px) - 1 cột (tuỳ chọn) */
@media (max-width: 480px) {

    .lms-courses-grid,
    .lms-courses-grid.columns-2,
    .lms-courses-grid.columns-3,
    .lms-courses-grid.columns-4,
    .lms-courses-grid.columns-5,
    .lms-courses-grid.columns-6 {
        grid-template-columns: repeat(2, 1fr);
    }
}