/* tasks_style.css */

/* --- Определение цветовых переменных --- */
:root {
    --page-bg: #f4f4f9; /* Изменено */
    --card-bg: #ffffff;
    --text-color: #333333;
    --header-text-color: #000033;
    --primary-accent-color: #430aaf; /* Изменено */
    --primary-accent-hover: #35088c; /* Изменено */
    --shadow-color: rgba(0, 0, 0, 0.08);
    --border-color: #f0f0f0;
    --table-border-color: #d9d1f5; /* Изменено */
    --table-header-bg: #e6e0fa; /* Изменено */
    --table-cell-bg: #fbfaff; /* Изменено */
    --table-correct-answer-bg: #dcd4f5; /* Изменено */
    --multi-answer-bg: #f8f9fa;
    --multi-answer-border: #e9ecef;
    --inserted-word-bg: #e7e1f7; /* Изменено */
    --inserted-word-border: #a99cd9; /* Изменено */
    --hidden-section-bg: #e9e4f5; /* Изменено */
    --hr-color: #f0f0f0;
}

html[data-theme="dark"] {
    --page-bg: #121212;
    --card-bg: #1e1e1e;
    --text-color: #e0e0e0;
    --header-text-color: #ffffff;
    --primary-accent-color: #9d78ff; /* Изменено */
    --primary-accent-hover: #b192ff; /* Изменено */
    --shadow-color: rgba(0, 0, 0, 0.4);
    --border-color: #333333;
    --table-border-color: #4a3e6e; /* Изменено */
    --table-header-bg: #3c325c; /* Изменено */
    --table-cell-bg: #2a253b; /* Изменено */
    --table-correct-answer-bg: #4f4375; /* Изменено */
    --multi-answer-bg: #2c2c2c;
    --multi-answer-border: #444444;
    --inserted-word-bg: #3a3153; /* Изменено */
    --inserted-word-border: #6c5b9c; /* Изменено */
    --hidden-section-bg: #1a1a1a;
    --hr-color: #2a2a2a;
}

/* --- Общие стили --- */
html, body {
    height: 100vh;
    overflow: hidden;
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color-scheme: light dark; /* Сообщает браузеру, что мы поддерживаем обе темы */
}
body {
    background-color: var(--page-bg);
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* --- Стили для верхней панели --- */
.top-panel {
    background-color: var(--card-bg);
    padding: 10px 20px;
    box-shadow: 0 2px 4px var(--shadow-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
    z-index: 200;
    transition: background-color 0.3s ease;
}
.logo-container {
    display: flex;
    align-items: center;
}
.logo {
    height: 30px;
    margin-right: 10px;
}
.site-title {
    font-family: 'Dela Gothic One', sans-serif;
    font-size: 20px;
    color: var(--header-text-color);
    transition: color 0.3s ease;
}
.menu-icon {
    width: 30px;
    height: 22px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    cursor: pointer;
    padding: 8px;
    box-sizing: content-box;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
}
.menu-icon span {
    display: block;
    height: 4px;
    width: 100%;
    background-color: var(--header-text-color);
    border-radius: 2px;
    transition: background-color 0.3s ease;
}

/* --- Основной контент --- */
main {
    flex-grow: 1;
    overflow-y: auto;
    padding: 20px;
}

/* --- Стили для заданий --- */
.container {
    max-width: 900px;
    margin: 0 auto;
}
h1 {
    text-align: center;
    color: var(--header-text-color);
    margin-bottom: 30px;
    transition: color 0.3s ease;
}
.task-box {
    background-color: var(--card-bg);
    border-radius: 15px;
    padding: 25px;
    margin-bottom: 25px;
    box-shadow: 0 4px 10px var(--shadow-color);
    overflow-wrap: break-word;
    position: relative;
    transition: transform 0.2s ease-in, opacity 0.2s ease-in, background-color 0.3s ease;
}
.task-box h2 {
    color: var(--header-text-color);
    margin-top: 0;
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--page-bg);
    font-size: 1.25em;
    padding-left: 0px;
    padding-right: 45px;
    position: relative;
    z-index: 1;
    transition: color 0.3s ease, border-color 0.3s ease;
}
.close-task-btn, .restore-task-btn {
    position: absolute;
    top: 10px;
    right: 5px;
    width: 40px;
    height: 40px;
    font-size: 30px;
    line-height: 40px;
    text-align: center;
    font-weight: bold;
    color: var(--header-text-color);
    cursor: pointer;
    transition: color 0.2s, transform 0.2s;
    -webkit-tap-highlight-color: transparent;
    z-index: 5;
}
.close-task-btn:hover, .restore-task-btn:hover {
    color: var(--text-color);
    transform: scale(1.1);
}
.restore-task-btn {
    font-size: 24px;
    top: 10px;
}
.instruction {
    line-height: 1.7;
    font-size: 1.1em;
    color: var(--text-color);
}
hr {
    border: none;
    border-top: 1px solid var(--hr-color);
    margin: 25px 0;
    transition: border-color 0.3s ease;
}
.answer {
    line-height: 1.6;
    font-size: 1.1em;
}
.answer-content {
    margin-top: 10px;
}
.answer strong {
    color: var(--primary-accent-hover);
}
b, strong {
    font-weight: 600;
}
a {
    color: var(--primary-accent-color);
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}
.image-wrapper {
    margin-top: 15px;
}
.task-image {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    display: block;
}
html[data-theme="dark"] .task-image {
    filter: brightness(0.9) contrast(1.1);
}


/* --- Стили для таблиц --- */
.content-table, .answer-content table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
    font-size: 1em;
    box-shadow: 0 2px 3px rgba(0,0,0,0.04);
    background-color: var(--table-cell-bg);
}
.content-table td, .content-table th, .answer-content td, .answer-content th {
    border: 1px solid var(--table-border-color);
    padding: 12px 15px;
    text-align: center;
    vertical-align: middle;
}
.content-table .correct-answer {
    background-color: var(--table-correct-answer-bg);
    font-weight: bold;
    color: var(--header-text-color);
}
.content-table tr:first-child, .answer-content tr:first-child {
    background-color: var(--table-header-bg);
    font-weight: bold;
    color: var(--header-text-color);
}

/* --- Стили для множественных ответов --- */
.multi-answer-item {
    background-color: var(--multi-answer-bg);
    border: 1px solid var(--multi-answer-border);
    border-left: 4px solid var(--primary-accent-color);
    padding: 10px 15px;
    border-radius: 6px;
    margin-bottom: 8px;
}
.multi-answer-item:last-child {
    margin-bottom: 0;
}

/* --- Стили для меню --- */
.menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--page-bg);
    z-index: 100;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 1;
    visibility: visible;
    transition: opacity 0.3s ease, visibility 0.3s ease, background-color 0.3s ease;
}
.menu-overlay.hidden {
    opacity: 0;
    visibility: hidden;
}
.menu-item {
    background-color: var(--card-bg);
    width: 80%;
    max-width: 400px;
    padding: 20px;
    margin-bottom: 20px;
    border-radius: 12px;
    box-shadow: 0 4px 8px var(--shadow-color);
    text-align: center;
    font-size: 24px;
    font-weight: bold;
    color: var(--header-text-color);
    -webkit-tap-highlight-color: transparent;
    user-select: none;
    cursor: pointer;
    transition: background-color 0.3s ease, color 0.3s ease;
}
.menu-item:last-child {
    margin-bottom: 0;
}

/* --- Стили для вставленных слов --- */
.inserted-word {
    background-color: var(--inserted-word-bg);
    border: 1px solid var(--inserted-word-border);
    border-radius: 5px;
    padding: 2px 6px;
    font-family: inherit;
    font-weight: 600;
    color: var(--text-color);
    white-space: nowrap;
}
.inserted-word[data-is-lowercase="true"] {
    padding-top: 0px;
    padding-bottom: 0px;
}

/* --- Адаптивные стили --- */
@media (max-width: 600px) {
    main {
        padding: 15px 15px 60px;
    }
    h1 {
        font-size: 1.5em;
    }
    .task-box {
        padding: 15px;
    }
    .top-panel {
        padding: 12px 18px;
    }
    .logo {
        height: 36px;
    }
    .site-title {
        font-size: 22px;
    }
    .menu-icon {
        width: 28px;
        height: 22px;
    }
    .menu-icon span {
        height: 4px;
    }
}

/* --- Другие стили --- */
.match-item {
    display: flex;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
}
.match-item:last-child { border-bottom: none; }
.match-source { flex: 1; padding-right: 10px; font-weight: 500; }
.match-target { flex: 1; padding-left: 10px; }
.group-heading {
    font-size: 1.1em;
    font-weight: bold;
    color: var(--header-text-color);
    margin-top: 20px;
    margin-bottom: 10px;
    padding-bottom: 5px;
    border-bottom: 2px solid var(--page-bg);
}
.group-heading:first-child { margin-top: 0; }
.image-fallback {
    border: 2px dashed #cccccc;
    border-radius: 8px;
    padding: 20px;
    text-align: center;
    background-color: #f8f8f8;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 15px;
}
.image-fallback span { font-weight: 500; color: #555555; }
.fallback-button {
    display: inline-block;
    background-color: var(--primary-accent-color);
    color: var(--card-bg);
    padding: 8px 16px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    transition: background-color 0.2s;
}
.fallback-button:hover { background-color: var(--primary-accent-hover); }
.order-item {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    background-color: var(--multi-answer-bg);
    border: 1px solid var(--multi-answer-border);
    padding: 10px;
    border-radius: 8px;
}
.order-item:last-child { margin-bottom: 0; }
.order-number {
    font-size: 1.2em;
    font-weight: bold;
    color: var(--primary-accent-color);
    margin-right: 15px;
    align-self: flex-start;
}
.order-content { flex: 1; }
.order-content .task-image { max-width: 200px; margin-top: 0; }
.string-multiple-item {
    display: inline-block;
    background-color: var(--inserted-word-bg);
    border: 1px solid var(--inserted-word-border);
    border-radius: 6px;
    padding: 6px 12px;
    margin: 5px 5px 5px 0;
    font-family: 'Courier New', Courier, monospace;
    font-weight: 500;
}
#hidden-tasks-section {
    max-width: 900px;
    margin: 40px auto 20px auto;
    padding: 20px;
    background-color: var(--hidden-section-bg);
    border-radius: 15px;
    box-shadow: 0 4px 10px var(--shadow-color);
}
#hidden-tasks-section.hidden { display: none; }
#hidden-tasks-section h2 {
    text-align: center;
    color: var(--header-text-color);
    margin-top: 0;
    margin-bottom: 25px;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 15px;
}
#hidden-tasks-container .task-box {
    opacity: 1;
    transform: none;
    margin-bottom: 15px;
}
#hidden-tasks-container .task-box:last-child { margin-bottom: 0; }