@import url('https://fonts.googleapis.com/css2?family=Instrument+Sans:wdth,wght@75..100,400..700&display=swap');
body {
    font-family: "Instrument Sans", sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-weight: 450;
}
p {
    font-size: 16px;
    line-height: 24px;
}
#sidebar {
    width: 360px;
    background-color: #000000;
    background-image: url('img/sidebar-bg.png');
    background-size: cover;
    background-position: center;
    color: #ffffff;
    padding: 20px;
    height: 100vh;
    overflow-y: auto;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    box-sizing: border-box;
}
#content {
    flex-grow: 1;
}
#navbar {
    border-bottom: 1px solid #E4E7ED;
    padding: 14px 20px;
    box-sizing: border-box;
    display: flex;
    justify-content: space-between;
    margin-bottom: 60px;
}
#lesson-details {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}
.lesson-name {
    font-size: 16px;
    line-height: 20px;
    font-weight: 600;
}
.module-name {
    font-size: 12px;
    line-height: 16px;
    font-weight: 600;
    color: #5F677A;
}
.avatar {
    width: 36px;
    height: 36px;
}
.logo {
    width: 238px;
    margin-bottom: 20px;
}
.course-image {
    width: calc(100% + 20px);
    margin-left: -10px;
    height: 140px;
    object-fit: cover;
    border-radius: 12px;
}
.course-title {
    font-size: 1.5em;
    line-height: 1em;
    font-weight: 550;
    text-align: left;
    margin-bottom: 20px;
    color: #ffffff;
    letter-spacing: -0.48px;
}
.provider {
    height: 24px;
    width: 106px;
    margin-top: -36px;
    margin-bottom: 8px;
}
.lesson {
    cursor: pointer;
    padding: 10px;
    background-color: transparent;
    display: flex;
    gap: 12px;
    align-items: center;
    color: #ffffff;
    border-radius: 8px;
    font-size: 12px;
    line-height: 14px;
    position: relative;
}
.lesson::after {
    content: ' ';
    height: calc(100% - 12px);
    width: 1px;
    position: absolute;
    left: 17.5px;
    top: 24px;
    background-color: rgba(255, 255, 255, 0.24);
}
.lesson:last-child::after {
    display: none;
}
.lesson.active {
    background-color: rgba(255, 255, 255, 0.2);
}
.lesson.locked {
    cursor: not-allowed;
}
.lesson.locked  {
    color: rgba(255,255,255,0.6);
}
.lesson-icon img {
    display: block;
}
#video-container {
    max-width: 956px;
    margin: 0 auto;
}
#video-player {
    aspect-ratio: 16 / 9;
    background-color: #000;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    border-radius: 12px;
    overflow: hidden;
}
#video {
    width: 100%;
}
#quiz {
    max-width: 956px;
    margin: 0 auto;
}
#quiz-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 14px;
    line-height: 16px;
    padding: 12px;
    border-radius: 8px;
    border: 1px solid #E4E7ED;
    font-weight: 500;
    margin-bottom: 40px;
}
#quiz-title {
    display: flex;
    align-items: center;
    gap: 8px;
}
#quiz p {
    padding: 0 12px;
    margin: 24px 0;
}
.quiz-option {
    padding: 16px;
    background-color: #fff;
    border: 1px solid #E4E7ED;
    border-top: 0;
    cursor: pointer;
    font-size: 16px;
    line-height: 24px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}
#quiz .quiz-option .explanation {
    width: 100%;
    flex-shrink: 0;
    padding-left: 32px;
    padding-right: 0;
    font-size: 14px;
    line-height: 20px;
    font-weight: 450;
    margin: 0;
    box-sizing: border-box;
}
.quiz-option::before {
    content: ' ';
    width: 20px;
    height: 20px;
    background-image: url('img/radio.svg');
}
.quiz-option:first-child {
    border-top: 1px solid #E4E7ED;
    border-top-left-radius: 8px;
    border-top-right-radius: 8px;
}
.quiz-option:last-child {
    border-bottom-left-radius: 8px;
    border-bottom-right-radius: 8px;
}
.quiz-option:hover::before {
    background-image: url('img/radio--hover.svg');
}
.quiz-option.selected {
    background-color: #EFF6FF;
    border-color: #1D4ED8;
    border-top: 1px solid #1D4ED8;
    margin-top: -1px;
}
.quiz-option:first-child.selected {
    margin-top: 0;
}
.quiz-option.selected::before {
    background-image: url('img/radio--selected.svg');
}
.quiz-option.correct {
    background-color: #EEF8F2;
    border-color: #2EA259;
    border-top: 1px solid #2EA259;
    margin-top: -1px;
}
.quiz-option:first-child.correct {
    margin-top: 0;
}
.quiz-option.correct::before {
    background-image: url('img/radio--correct.svg');
}
.quiz-option.incorrect {
    background-color: #FCF1F1;
    border-color: #DE4A4A;
    border-top: 1px solid #DE4A4A;
    margin-top: -1px;
}
.quiz-option:first-child.incorrect {
    margin-top: 0;
}
.quiz-option.incorrect::before {
    background-image: url('img/radio--incorrect.svg');
}
button {
    padding: 6px 12px;
    background-color: #1D4ED8;
    color: #fff;
    border: none;
    cursor: pointer;
    margin-top: 10px;
    font-family: "Instrument Sans", sans-serif;
    font-weight: 600;
    border-radius: 12px;
    line-height: 24px;
    font-size: 14px;
}
button:disabled {
    background-color: #cccccc;
    cursor: not-allowed;
}
#reset-progress {
    margin-top: auto;
    background-color: transparent;
    border: 1px solid #fff;
}
#view-certificate {
    text-align: center;
}
#view-certificate a {
    padding: 6px 12px;
    color: #fff;
    border: none;
    cursor: pointer;
    margin-top: 10px;
    font-family: "Instrument Sans", sans-serif;
    font-weight: 600;
    border-radius: 12px;
    line-height: 24px;
    font-size: 14px;
    background-color: #1D4ED8;
    display: block;
    text-decoration: none;
}
.module-container {
  margin-top: 20px;
  margin-bottom: -20px;
}
.module-title {
    width: calc(100% + 40px);
    margin-left: -20px;
    cursor: pointer;
    padding: 15px 20px;
    background-color: transparent;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-sizing: border-box;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    font-size: 14px;
    line-height: 16px;
    font-weight: 550;
}
.module-title::after {
    content: ' ';
    width: 16px;
    height: 16px;
    background-image: url('img/chevron-up.svg');
    transition: transform 0.4s ease;
}
.module-title.collapsed::after {
    transform: rotate(-180deg);
}
.module-lessons {
    max-height: 1000px;
    width: calc(100% + 20px);
    margin-left: -10px;
    overflow: hidden;
    transition: max-height 0.3s ease, margin-bottom 0.3s ease;
    margin-bottom: 15px;
}
.module-lessons.collapsed {
    max-height: 0;
    margin-bottom: 0;
}
.progress-bar-container {
    width: 100%;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    margin: 10px 0 5px 0;
}
.progress-bar {
    height: 12px;
    background-color: #4ADE80;
    border-radius: 10px;
    transition: width 0.5s ease-in-out;
}
.progress-text {
    text-align: left;
    color: #fff;
    font-size: 14px;
    font-weight: 600;
}
#simulate-completion {
    background-color: #4CAF50;
    color: white;
    margin-top: 10px;
}