/* General styles */
html {
    font-size: 62.5%;
    height: 100%;
}

body {
    height: 100%;
    min-height: 100vh;
    padding: var(--spacing-400) var(--spacing-400) var(--spacing-1800) var(--spacing-400);
    background: var(--body-background);
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: var(--font-rubik), sans-serif;
    color: var(--primary-font-color);
}

/* Global main app styles */
.main-app {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-800);
    max-width: 116rem;
    width: 116rem;
}

.main-app__top-box {
    display: flex;
    justify-content: flex-start;
    width: 100%;
}

.main-app__topic-box {
    display: flex;
    gap: var(--spacing-300);
    align-items: center;
}

.main-app__topic-icon {
    width: 40px;
    height: 40px;
}

.main-app__topic-icon-box {
    border-radius: 8px;
    width: 56px;
    height: 56px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.main-app__theme-box {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: var(--spacing-200);
}

.main-app__theme-box-icon {
    width: 24px;
}

.main-app__theme-button {
    width: 48px;
    height: 28px;
    padding: 4px;
    background: var(--purple-600);
    border-radius: 100px;
    border: none;
}

.main-app__theme-button-thumb {
    display: block;
    width: 20px;
    height: 20px;
    background-color: var(--white);
    border-radius: 50%;
    transition: transform 0.3s;
}

.right-sided {
    transform: translateX(100%);
}

.main-app__view {
    display: flex;
    gap: var(--spacing-1600);
}

.main-app__left-top-content {
    width: 50%;
    max-width: 50%;
}

.main-app__right-bottom-content {
    position: relative;
    width: 50%;
    max-width: 50%;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-200);
}

/* =================== Start view =================== */
/* Welcome section */
.main-app__quiz-welcome {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-600);
}

.fe-quiz-text {
    display: block;
    margin-top: var(--spacing-100);
}

.pick-subj-text {
    color: var(--secondary-font-color);
}

.start-view .main-app__quiz-question-box,
.start-view .main-app--answer-option,
.start-view .multi-function-btn,
.start-view .main-app__quiz-score-box,
.start-view .main-app__final-score,
.start-view .main-app__topic-box{
    display: none;
}

/* =================== Buttons =================== */
.main-app__buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-200);
}

.main-app__button {
    position: relative;
    padding: var(--spacing-300);
    border-radius: 24px;
    border: none;
    display: flex;
    align-items: center;
    gap: var(--spacing-400);
    color: var(--primary-font-color);
    background-color: var(--background-color-btn);
    box-shadow: var(--box-shadow);
}

.main-app__topic-icon-box.btn-HTML {
    background-color: var(--orange-50);
}

.main-app__topic-icon-box.btn-CSS {
    background-color: var(--green-100);
}

.main-app__topic-icon-box.btn-JavaScript {
    background-color: var(--blue-50);
}

.main-app__topic-icon-box.btn-Accessibility {
    background-color: var(--purple-100);
}

.main-app__topic-btn-text {
    flex: 1;
    text-align: start;
}

.multi-function-btn {
    position: absolute;
    bottom: 0;
    transform: translateY(calc(100% + var(--spacing-400)));
    width: 100%;
    display: block;
    padding: var(--spacing-400);
    text-align: center;
    color: var(--white);
    background-color: var(--purple-600);
}

.multi-function-btn.not-selected {
    background: #bf7fbf;
}

.main-app__button.selected-option {
    box-shadow: inset 0 0 0 3px var(--purple-600);
}

.main-app__button.wrong-option {
    box-shadow: inset 0 0 0 3px var(--red-500);
}

.main-app__button.correct-option {
    box-shadow: inset 0 0 0 3px var(--green-500);
}

.main-app__button::before {
    content: '';
    position: absolute;
    right: var(--spacing-300);
    display: inline-block;
    width: 40px;
    height: 40px;
    background-size: contain;
    background-repeat: no-repeat;
}

.main-app__button.correct-option::before {
    background-image: url('../img/icon-correct.svg');
}

.main-app__button.wrong-option::before {
    background-image: url('../img/icon-error.svg');
}

/* =================== Quiz view =================== */
.main-app__quiz-question-num {
    color: var(--secondary-font-color);
    margin-bottom: var(--spacing-200);
}

.main-app__quiz-question {
    margin-bottom: var(--spacing-2300);
}

.main-app__quiz-progress-bar {
    width: 100%;
    height: 16px;
    padding: 4px;
    border-radius: 100px;
    background-color: var(--background-color-btn);
}

.main-app__quiz-current-progress {
    height: 8px;
    width: 60%;
    border-radius: 100px;
    background-color: var(--purple-600);
}

.quiz-view .main-app__button-side-content {
    background-color: var(--grey-50);
}

.main-app--answer-option {
    color: var(--grey-500);
}

.quiz-view .main-app__topic-icon-btn,
.quiz-view .main-app__quiz-welcome,
.quiz-view .main-app__quiz-score-box,
.quiz-view .main-app__final-score {
    display: none;
}


/* =================== Score view =================== */
/* Score view */
.main-app__final-score {
    width: 100%;
    padding: var(--spacing-600);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-500);
    background-color: var(--secondary-background);
    box-shadow: var(--box-shadow);
    border-radius: 24px;
}

.score-view .main-app__quiz-welcome,
.score-view .main-app__quiz-question-box,
.score-view .main-app__buttons
{
    display: none;
}

.text-block {
    display: block;
}

.score-max-text {
    color: var(--secondary-font-color);
}

/* ============== Error message ================  */
.main-app__error {
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 100%;
    transform: translate(-50%, calc(100% + var(--spacing-1800)));
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-100);
    color: var(--red-500);
}

.main-app__error.hidden {
    display: none;
}
/* =================== Base text presets =================== */
.text-1 {
    font-size: var(--text-1-size);
    line-height: var(--text-1-line-height);
    letter-spacing: var(--text-1-letter-spacing);
}
.text-2 {
    font-size: var(--text-2-size);
    line-height: var(--text-2-line-height);
    letter-spacing: var(--text-2-letter-spacing);
}
.text-3 {
    font-size: var(--text-3-size);
    line-height: var(--text-3-line-height);
    letter-spacing: var(--text-3-letter-spacing);
}
.text-4 {
    font-size: var(--text-4-size);
    line-height: var(--text-4-line-height);
    letter-spacing: var(--text-4-letter-spacing);
}
.text-5 {
    font-size: var(--text-5-size);
    line-height: var(--text-5-line-height);
    letter-spacing: var(--text-5-letter-spacing);
}
.text-6 {
    font-size: var(--text-6-size);
    line-height: var(--text-6-line-height);
    letter-spacing: var(--text-6-letter-spacing);
}

/* Font weights */
.text-light {
    font-weight: var(--text-light);
}
.text-regular {
    font-weight: var(--text-regular);
}
.text-medium {
    font-weight: var(--text-medium);
}
.text-italic {
    font-style: var(--text-italic);
}

@media (hover: hover) {
    .main-app__button:hover {
        box-shadow: inset 0 0 0 3px var(--purple-600);
        cursor: pointer;
    }
}

/* Responsive sizes (mobile overrides) */
@media (max-width: 1230px) {
    html {
        font-size: 50%;
    }
}

@media (max-width: 980px) {
    html {
        font-size: 62.5%;
    }

    .main-app__left-top-content {
        width: 100%;
        max-width: 100%;
    }

    .main-app__right-bottom-content {
        width: 100%;
        max-width: 100%;
    }

    .main-app__view {
        flex-direction: column;
        gap: var(--spacing-800);
    }

    .main-app__quiz-welcome {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-200);
    }

    .main-app__quiz-question {
        margin-bottom: var(--spacing-500);
        font-size: clamp(1vw, var(--text-3-size), 5vw );
    }

    .main-app__buttons {
        gap: var(--spacing-300);
    }

    .main-app__button {
        padding: var(--spacing-200);
    }

}

@media (max-width: 500px) {
    .text-1 {
        font-size: var(--text-1-mobile-size);
    }
    .text-2 {
        font-size: var(--text-2-mobile-size);
    }
    .text-3 {
        font-size: var(--text-3-mobile-size);
    }
    .text-4 {
        font-size: var(--text-4-mobile-size);
    }
    .text-5 {
        font-size: var(--text-5-mobile-size);
    }

    .main-app__theme-box-icon {
        width: 16px;
    }

    .main-app__theme-box {
        gap: var(--spacing-100);
    }

    .main-app__theme-box-icon {
        width: 16px;
    }

    .main-app__theme-button {
        width: 32px;
        height: 20px;
    }

    .main-app__theme-button-thumb {
        width: 12px;
        height: 12px;
    }

    .main-app__view {
        gap: var(--spacing-500);
    }

    .main-app__buttons {
        gap: var(--spacing-200);
    }

    .main-app__button {
        border-radius: 12px;
        gap: var(--spacing-200);
    }

    .main-app__topic-icon-box {
        width: 40px;
        height: 40px;
    }

    .main-app__topic-icon, .main-app__topic-icon-btn {
        width: 28px;
        height: 28px;
    }

    .main-app__quiz-question-num {
        margin-bottom: var(--spacing-200);
    }

    .main-app__quiz-question {
        margin-bottom: var(--spacing-300);
    }

    .main-app__final-score {
        padding: var(--spacing-400);
        gap: var(--spacing-200);
    }

    .multi-function-btn {
        transform: translateY(calc(100% + var(--spacing-200)));
    }

}