/* Genel Stiller */
.rt-egitim-sistemi {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
}

.rt-main-title {
    font-size: 32px;
    font-weight: 600;
    margin-bottom: 30px;
    color: #333;
    position: relative;
    padding-bottom: 15px;
    text-align: center;
}

.rt-main-title:after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: #0073aa;
}

/* Kategori Listesi */
.rt-kategori-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.rt-kategori-item {
    background: #fff;
    border-radius: 10px;
    padding: 25px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid #eee;
    position: relative;
    overflow: hidden;
}

.rt-kategori-item:before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 5px;
    height: 100%;
    background: #0073aa;
    transition: all 0.3s ease;
}

.rt-kategori-item:hover {
    transform: translateY(-7px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.12);
}

.rt-kategori-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 15px;
    color: #333;
    position: relative;
    display: flex;
    align-items: center;
}

.rt-kategori-title i {
    margin-right: 10px;
    color: #0073aa;
    font-size: 24px;
}

.rt-kategori-description {
    font-size: 14px;
    color: #666;
    margin-bottom: 20px;
    line-height: 1.6;
}

.rt-kategori-action {
    display: flex;
    justify-content: flex-end;
}

.rt-kategori-view {
    display: inline-flex;
    align-items: center;
    font-size: 14px;
    font-weight: 500;
    color: #0073aa;
    transition: all 0.3s ease;
}

.rt-kategori-view i {
    margin-left: 5px;
    transition: transform 0.3s ease;
}

.rt-kategori-item:hover .rt-kategori-view i {
    transform: translateX(5px);
}

/* Video Listesi */
.rt-video-list {
    margin-top: 30px;
}

.rt-navigation {
    margin-bottom: 20px;
}

.rt-back-to-categories {
    display: inline-flex;
    align-items: center;
    padding: 10px 15px;
    background: #0073aa;
    color: #fff;
    text-decoration: none;
    border-radius: 5px;
    transition: all 0.3s ease;
    font-weight: 500;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.rt-back-to-categories i {
    margin-right: 8px;
    font-size: 18px;
}

.rt-back-to-categories:hover {
    background: #005d8c;
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.rt-video-list-title {
    font-size: 26px;
    margin-bottom: 25px;
    color: #333;
    position: relative;
    padding-bottom: 10px;
}

.rt-video-list-title:after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 3px;
    background: #0073aa;
}

.rt-video-items {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 25px;
}

.rt-video-item {
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid #eee;
}

.rt-video-item:hover {
    transform: translateY(-7px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.12);
}

.rt-video-thumbnail {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    height: 0;
    overflow: hidden;
}

.rt-video-thumbnail img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.rt-video-play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: rgba(0, 115, 170, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.rt-video-play-button i {
    color: #fff;
    font-size: 24px;
}

.rt-video-item:hover .rt-video-play-button {
    background: rgba(0, 115, 170, 1);
    transform: translate(-50%, -50%) scale(1.1);
}

.rt-video-info {
    padding: 20px;
}

.rt-video-info h4 {
    font-size: 18px;
    margin-bottom: 10px;
    color: #333;
    font-weight: 600;
}

.rt-video-info p {
    font-size: 14px;
    color: #666;
    margin-bottom: 15px;
    line-height: 1.5;
}

.rt-video-meta {
    display: flex;
    align-items: center;
    color: #888;
    font-size: 13px;
}

.rt-video-meta i {
    margin-right: 5px;
}

/* Video Detay */
.rt-video-detail {
    margin-top: 30px;
    background: #fff;
    border-radius: 10px;
    padding: 25px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
}

.rt-back-to-list {
    display: inline-flex;
    align-items: center;
    padding: 8px 16px;
    background: #0073aa;
    color: #fff;
    text-decoration: none;
    border-radius: 5px;
    margin-bottom: 20px;
    transition: all 0.3s ease;
    font-weight: 500;
    border: 1px solid #ddd;
}

.rt-back-to-list:before {
    content: "←";
    margin-right: 8px;
}

.rt-back-to-list:hover {
    background: #e6e6e6;
    color: #000;
}

.rt-video-player {
    width: 100%;
    margin-bottom: 30px;
    position: relative;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    height: 0;
    overflow: hidden;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.rt-video-player iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.rt-video-title {
    font-size: 26px;
    margin-bottom: 15px;
    color: #333;
    font-weight: 600;
}

.rt-video-description {
    font-size: 16px;
    color: #666;
    margin-bottom: 30px;
    line-height: 1.7;
}

.rt-video-navigation {
    display: flex;
    justify-content: space-between;
    margin: 25px 0;
}

.rt-prev-video,
.rt-next-video {
    display: flex;
    align-items: center;
    padding: 10px 20px;
    background: #0073aa;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
}

.rt-prev-video:before {
    content: "←";
    margin-right: 8px;
}

.rt-next-video:after {
    content: "→";
    margin-left: 8px;
}

.rt-prev-video:hover,
.rt-next-video:hover {
    background: #005d8c;
}

.rt-anket-link {
    margin-top: 30px;
    text-align: center;
}

.rt-anket-link .button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 25px;
    background: #4CAF50;
    color: #fff;
    text-decoration: none;
    border-radius: 5px;
    transition: all 0.3s ease;
    font-weight: 500;
    font-size: 16px;
}

.rt-anket-link .button i {
    margin-right: 8px;
}

.rt-anket-link .button:hover {
    background: #3d8b40;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(76, 175, 80, 0.3);
}

/* Responsive */
@media (max-width: 768px) {
    .rt-kategori-list,
    .rt-video-items {
        grid-template-columns: 1fr;
    }
    
    .rt-video-title {
        font-size: 22px;
    }
    
    .rt-video-description {
        font-size: 14px;
    }
    
    .rt-video-navigation {
        flex-direction: column;
        gap: 10px;
    }
    
    .rt-prev-video,
    .rt-next-video {
        width: 100%;
        justify-content: center;
    }
}