/* css/global.css */
@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@400;600;700;800&display=swap');

:root {
    --focus-ring-outer: #ffb300;
    --focus-ring-inner: #ffffff;
    --focus-ring-outer-hc: #7dd3ff;
    --focus-ring-inner-hc: #000000;
    --color-border-soft-purple: #d5cdef;
    --color-border-soft-blue: #d7e2f1;
    --color-surface-card: #fafcff;
    --color-surface-summary: #eef4ff;
    --color-callout-tips-bg: #e6f7ff;
    --color-callout-tips-accent: #1890ff;
    --color-callout-tips-heading: #0050b3;
    --color-callout-tip-bg: #d9edf0;
    --color-callout-tip-accent: #57c2bd;
    --color-callout-task-bg: #fffbe6;
    --color-callout-task-accent: #ffa500;
}

html.a11y-high-contrast {
    --focus-ring-outer: var(--focus-ring-outer-hc);
    --focus-ring-inner: var(--focus-ring-inner-hc);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

.a11y-high-contrast .modal-overlay {
    background: rgba(0,0,0,0.4);
}

.a11y-high-contrast .modal-overlay .help-content {
    background: #000 !important;
    color: #fff !important;
    border: 2px solid #fff !important;
}
.a11y-high-contrast .modal-overlay .help-content h2 {
    color: #ffe082 !important;
}
.a11y-high-contrast .modal-overlay .help-content button {
    background: #000 !important;
    color: #fff !important;
    border: 2px solid #ffe082 !important;
    box-shadow: none !important;
}


html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Nunito', 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    background-color: #f0f8ff;
    color: #333;
    line-height: 1.6;
    padding: 15px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.page-wrapper { /* Додано для lessons.html та resources.html */
    max-width: 900px;
    width: 100%;
    margin: 0 auto; /* Центрування */
    flex: 1; /* Щоб футер притискався донизу */
    display: flex;
    flex-direction: column;
}


header.main-header { /* Змінено для уникнення конфлікту з header в page-wrapper */
    text-align: center;
    margin-bottom: 0;
    color: #4b0082;
}

header.main-header h1 {
    font-size: clamp(2rem, 5vw, 3rem); /* Адаптивний розмір */
    margin-bottom: 5px;
    white-space: nowrap;
}

header.main-header h2 {
    font-size: clamp(1rem, 3vw, 1.2rem);
    color: #555;
}

main.content-container { /* Для index.html, manual.html */
    display: flex;
    flex-direction: column;
    flex: 1;
    gap: 15px;
}


footer.main-footer {
    text-align: center;
    margin-top: 30px; /* Збільшено відступ */
    padding-top: 15px;
    border-top: 1px solid #ddd;
    color: #666;
    font-size: 0.9rem;
    width: 100%;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: bold;
    font-size: 1rem;
    font-family: inherit;
    text-decoration: none;
    transition: background-color 0.2s, transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.btn :is(i, .ui-icon) {
    margin-right: 8px;
    width: 1.2em;
    height: 1.2em;
}

.btn :is(i, .ui-icon).icon-right {
    margin-right: 0;
    margin-left: 8px;
}

.ui-icon {
    display: inline-block;
    width: 1em;
    height: 1em;
    flex: 0 0 auto;
    vertical-align: -0.125em;
    background-color: currentColor;
    background-repeat: no-repeat;
    background-position: center;
    background-size: contain;
    mask-repeat: no-repeat;
    mask-position: center;
    mask-size: contain;
    -webkit-mask-repeat: no-repeat;
    -webkit-mask-position: center;
    -webkit-mask-size: contain;
}

.icon-arrow-left {
    mask-image: url('../assets/icons/arrow-left.svg');
    -webkit-mask-image: url('../assets/icons/arrow-left.svg');
}

.icon-arrow-right {
    mask-image: url('../assets/icons/arrow-right.svg');
    -webkit-mask-image: url('../assets/icons/arrow-right.svg');
}

.icon-book-open {
    mask-image: url('../assets/icons/book-open.svg');
    -webkit-mask-image: url('../assets/icons/book-open.svg');
}

.icon-check {
    mask-image: url('../assets/icons/check.svg');
    -webkit-mask-image: url('../assets/icons/check.svg');
}

.icon-check-circle {
    mask-image: url('../assets/icons/check-circle.svg');
    -webkit-mask-image: url('../assets/icons/check-circle.svg');
}

.icon-copy {
    mask-image: url('../assets/icons/copy.svg');
    -webkit-mask-image: url('../assets/icons/copy.svg');
}

.icon-download {
    mask-image: url('../assets/icons/download.svg');
    -webkit-mask-image: url('../assets/icons/download.svg');
}

.icon-exclamation-triangle {
    mask-image: url('../assets/icons/exclamation-triangle.svg');
    -webkit-mask-image: url('../assets/icons/exclamation-triangle.svg');
}

.icon-graduation-cap {
    mask-image: url('../assets/icons/graduation-cap.svg');
    -webkit-mask-image: url('../assets/icons/graduation-cap.svg');
}

.icon-info-circle {
    mask-image: url('../assets/icons/info-circle.svg');
    -webkit-mask-image: url('../assets/icons/info-circle.svg');
}

.icon-link {
    mask-image: url('../assets/icons/link.svg');
    -webkit-mask-image: url('../assets/icons/link.svg');
}

.icon-paint-brush {
    mask-image: url('../assets/icons/paint-brush.svg');
    -webkit-mask-image: url('../assets/icons/paint-brush.svg');
}

.icon-play {
    mask-image: url('../assets/icons/play.svg');
    -webkit-mask-image: url('../assets/icons/play.svg');
}

.icon-puzzle-piece {
    mask-image: url('../assets/icons/puzzle-piece.svg');
    -webkit-mask-image: url('../assets/icons/puzzle-piece.svg');
}

.icon-question-circle {
    mask-image: url('../assets/icons/question-circle.svg');
    -webkit-mask-image: url('../assets/icons/question-circle.svg');
}

.icon-stop-circle {
    mask-image: url('../assets/icons/stop-circle.svg');
    -webkit-mask-image: url('../assets/icons/stop-circle.svg');
}

.icon-th {
    mask-image: url('../assets/icons/th.svg');
    -webkit-mask-image: url('../assets/icons/th.svg');
}

.icon-times {
    mask-image: url('../assets/icons/times.svg');
    -webkit-mask-image: url('../assets/icons/times.svg');
}

.icon-trash-alt {
    mask-image: url('../assets/icons/trash-alt.svg');
    -webkit-mask-image: url('../assets/icons/trash-alt.svg');
}

.icon-universal-access {
    mask-image: url('../assets/icons/universal-access.svg');
    -webkit-mask-image: url('../assets/icons/universal-access.svg');
}


.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

a.btn,
a.btn:hover,
a.btn:focus-visible,
a.btn:active {
    text-decoration: none;
}

.btn:active {
    transform: translateY(0px) scale(0.98);
    box-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.btn-primary {
    background-color: #6a5acd; /* Ліловий */
    color: white;
}
.btn-primary:hover,
.btn-primary:focus-visible,
.btn-primary:active {
    background-color: #5849a9;
    color: white;
}

.btn-success {
    background-color: #32cd32; /* Зелений */
    color: white;
}
.btn-success:hover,
.btn-success:focus-visible,
.btn-success:active {
    background-color: #28a428;
    color: white;
}

.btn-warning {
    background-color: #ffb300; /* Жовтий/Помаранчевий */
    color: #333;
}
.btn-warning:hover,
.btn-warning:focus-visible,
.btn-warning:active {
    background-color: #e6a100;
    color: #333;
}

.btn:disabled, .btn[disabled] {
    opacity: 0.5;
    cursor: not-allowed;
    filter: grayscale(0.2);
    pointer-events: none;
}

.btn-danger {
    background-color: #c0392b; /* Темніший червоний для кращого контрасту */
    color: white;
}
.btn-danger:hover,
.btn-danger:focus-visible,
.btn-danger:active {
    background-color: #a93226;
    color: white;
}

.btn-info {
    background-color: #2f6fbf; /* Темніший синій для кращого контрасту */
    color: white;
}
.btn-info:hover,
.btn-info:focus-visible,
.btn-info:active {
    background-color: #275fa4;
    color: white;
}

.site-links-uniform {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
}

.site-links-uniform .btn {
    min-height: 52px;
    padding: 12px 22px;
    font-size: 1rem;
    white-space: nowrap;
}

.footer-site-nav {
    margin-top: 24px;
}

.footer-site-nav .btn {
    min-width: min(100%, 220px);
}

/* --- Tables --- */
.manual-table-wrap {
    margin: 20px 0;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border: 1px solid #cbd5e1;
    border-radius: 12px;
    background: #fff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.manual-table {
    width: max(100%, 560px);
    margin: 0;
    border-collapse: separate;
    border-spacing: 0;
    background: transparent;
}

.manual-table thead th {
    padding: 14px 16px;
    text-align: left;
    vertical-align: bottom;
    color: #1f2937;
    font-size: clamp(1rem, 2.5vw, 1.08rem);
    font-weight: 800;
    background: var(--color-surface-summary);
    border-bottom: 2px solid #cbd5e1;
}

.manual-table tbody td {
    padding: 12px 16px;
    vertical-align: top;
    color: #1f2937;
    background: #fff;
    border-top: 1px solid #e5e7eb;
}

.manual-table tbody tr:first-child td {
    border-top: none;
}

.manual-table :is(th, td) + :is(th, td) {
    border-left: 1px solid #e5e7eb;
}

.manual-table tbody tr:nth-child(even) td {
    background: #fafbff;
}

.manual-table tbody tr:hover td {
    background: #f3efff;
}

.manual-table code {
    white-space: nowrap;
}

.manual-table th:first-child,
.manual-table td:first-child {
    min-width: 88px;
}

.manual-table th:last-child,
.manual-table td:last-child {
    min-width: 130px;
}

.a11y-high-contrast .manual-table-wrap {
    background: #000 !important;
    border-color: #fff !important;
    box-shadow: none !important;
}

.a11y-high-contrast .manual-table thead th,
.a11y-high-contrast .manual-table tbody td {
    color: #fff !important;
    background: #000 !important;
    border-color: #fff !important;
}

.a11y-high-contrast .manual-table tbody tr:hover td {
    background: #111 !important;
}


/* --- Headings --- */
h1, h2, h3, h4, h5, h6 {
    color: #4b0082; /* Фіолетовий за замовчуванням для заголовків */
}

/* --- Links --- */
a:not(.btn) {
    color: #6a5acd;
    text-decoration: none;
    transition: color 0.2s;
}
a:not(.btn):hover {
    color: #ff6347;
    text-decoration: underline;
}

/* Accessibility */
:focus-visible {
  outline: 3px solid var(--focus-ring-outer);
  outline-offset: 2px;
  box-shadow: 0 0 0 2px var(--focus-ring-inner);
  border-radius: 6px;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[role="button"]:focus-visible,
[tabindex]:not([tabindex="-1"]):focus-visible {
    outline: 3px solid var(--focus-ring-outer);
    outline-offset: 2px;
    box-shadow: 0 0 0 2px var(--focus-ring-inner);
}

.btn:focus-visible,
.commands-tab:focus-visible,
.tab-button:focus-visible,
.example-block:focus-visible,
.manual-page-btn:focus-visible,
.main-btn:focus-visible,
.toc-list a:focus-visible,
.navigation-buttons__btn:focus-visible {
    outline: 3px solid var(--focus-ring-outer);
    outline-offset: 2px;
    box-shadow: 0 0 0 2px var(--focus-ring-inner), 0 0 0 5px rgba(0, 0, 0, 0.18);
}

.skip-link {
    position: absolute;
    left: 10px;
    top: -60px;
    background: #111;
    color: #fff;
    padding: 10px 14px;
    border-radius: 8px;
    border: 2px solid #ffb300;
    z-index: 30000;
    text-decoration: none;
    font-weight: 700;
}

.skip-link:focus,
.skip-link:focus-visible {
    top: 10px;
    outline: 3px solid #7dd3ff;
}

/* Utility classes */
.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }

/* Specific global styles for Ravlyk if any element is shared across pages and not fitting in components */
/* Глобальний контейнер для повідомлень - специфічний селектор */
body > #global-message-display {
    position: fixed !important;
    top: 20px !important;
    left: 50% !important;
    transform: translateX(-50%) !important;
    z-index: 9999 !important;
    width: 90% !important;
    max-width: 500px !important;
    animation: message-fade-in 0.3s ease-in-out !important;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2) !important;
    border-radius: 8px !important;
    margin: 0 !important;
    pointer-events: none !important;
}

@keyframes message-fade-in {
    from { opacity: 0; transform: translate(-50%, -10px); }
    to { opacity: 1; transform: translate(-50%, 0); }
}

/* Стилі для всіх типів повідомлень з високою специфічністю */
body #global-message-display,
body #global-message-display.message-global,
body #global-message-display.message-error-global,
body #global-message-display.message-success-global,
body #global-message-display.message-info-global {
    font-size: 1.1rem !important;
    font-weight: bold !important;
    border-radius: 8px !important;
    padding: 15px 20px !important;
    border-left-width: 6px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    gap: 15px !important;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15) !important;
    width: 100% !important;
    letter-spacing: 0.2px !important;
}

/* Стилі для повідомлень про помилки */
body #global-message-display.message-error-global {
    background: #ffebee !important;
    color: #d50000 !important;
    border-left-style: solid !important;
    border-left-color: #d50000 !important;
    background-image: linear-gradient(to right, rgba(255, 0, 0, 0.1), rgba(255, 0, 0, 0.02)) !important;
}

/* Стилі для успішних повідомлень */
body #global-message-display.message-success-global {
    background: #e8f5e9 !important;
    color: #1b5e20 !important;
    border-left-style: solid !important;
    border-left-color: #1b5e20 !important;
    background-image: linear-gradient(to right, rgba(27, 94, 32, 0.12), rgba(27, 94, 32, 0.03)) !important;
}

/* Стилі для інформаційних повідомлень */
body #global-message-display.message-info-global {
    background: #fff8e1 !important;
    color: #8a3b00 !important;
    border-left-style: solid !important;
    border-left-color: #8a3b00 !important;
    background-image: linear-gradient(to right, rgba(138, 59, 0, 0.12), rgba(138, 59, 0, 0.03)) !important;
}

/* Стилі для повідомлень про доступність */
body #global-message-display.message-a11y-global {
    background: #f5f5f5 !important;
    color: #333333 !important;
    border-left-style: solid !important;
    border-left-color: #333333 !important;
    background-image: linear-gradient(to right, rgba(0, 0, 0, 0.1), rgba(0, 0, 0, 0.02)) !important;
    font-weight: 500 !important;
}

/* Стилі для тексту повідомлення */
body #global-message-display .message-text-global {
    flex: 1 !important;
    display: flex !important;
    align-items: center !important;
    gap: 10px !important;
}

/* Стилі для іконок з захистом від перезаписування */
body #global-message-display .message-text-global :is(i, .ui-icon),
html.a11y-high-contrast body #global-message-display .message-text-global :is(i, .ui-icon),
html.a11y-sans-serif-font body #global-message-display .message-text-global :is(i, .ui-icon),
html.a11y-larger-text body #global-message-display .message-text-global :is(i, .ui-icon),
html.a11y-increased-spacing body #global-message-display .message-text-global :is(i, .ui-icon),
html.a11y-reduce-animations body #global-message-display .message-text-global :is(i, .ui-icon) {
    font-size: 1.3rem !important;
    width: 1.3rem !important;
    height: 1.3rem !important;
}

/* Іконка для помилок */
body #global-message-display.message-error-global :is(i, .ui-icon) {
    color: #d50000 !important;
}

/* Іконка для успішних повідомлень */
body #global-message-display.message-success-global :is(i, .ui-icon) {
    color: #1b5e20 !important;
}

/* Іконка для інформаційних повідомлень */
body #global-message-display.message-info-global :is(i, .ui-icon) {
    color: #8a3b00 !important;
}

/* Стилі для кнопки закриття */
body #global-message-display .message-close-btn-global {
    background: transparent !important;
    color: inherit !important;
    border: none !important;
    border-radius: 50% !important;
    width: 26px !important;
    height: 26px !important;
    font-size: 16px !important;
    font-weight: bold !important;
    cursor: pointer !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    transition: all 0.2s ease !important;
    padding: 0 !important;
    margin: 0 !important;
    opacity: 0.7 !important;
    pointer-events: auto !important;
}

/* Ефект при наведенні на кнопку закриття */
body #global-message-display .message-close-btn-global:hover {
    background-color: rgba(0, 0, 0, 0.1) !important;
    transform: scale(1.1) !important;
    opacity: 1 !important;
}

/* Ефекти наведення для кнопок закриття різних типів повідомлень */
body #global-message-display.message-error-global .message-close-btn-global:hover {
    background-color: rgba(213, 0, 0, 0.1) !important;
}
body #global-message-display.message-success-global .message-close-btn-global:hover {
    background-color: rgba(0, 200, 83, 0.1) !important;
}
body #global-message-display.message-info-global .message-close-btn-global:hover {
    background-color: rgba(255, 109, 0, 0.1) !important;
}
body #global-message-display.message-a11y-global .message-close-btn-global:hover {
    background-color: rgba(0, 0, 0, 0.1) !important;
}

html.a11y-high-contrast body #global-message-display,
html.a11y-high-contrast body #global-message-display.message-global,
html.a11y-high-contrast body #global-message-display.message-error-global,
html.a11y-high-contrast body #global-message-display.message-success-global,
html.a11y-high-contrast body #global-message-display.message-info-global,
html.a11y-high-contrast body #global-message-display.message-a11y-global {
    background: #000 !important;
    color: #fff !important;
    border: 2px solid #fff !important;
    border-left-width: 6px !important;
    background-image: none !important;
    box-shadow: none !important;
}

html.a11y-high-contrast body #global-message-display.message-error-global {
    border-left-color: #ff6b6b !important;
}

html.a11y-high-contrast body #global-message-display.message-success-global {
    border-left-color: #7CFC00 !important;
}

html.a11y-high-contrast body #global-message-display.message-info-global,
html.a11y-high-contrast body #global-message-display.message-a11y-global {
    border-left-color: #7dd3ff !important;
}

html.a11y-high-contrast body #global-message-display .message-text-global,
html.a11y-high-contrast body #global-message-display .message-text-global :is(i, .ui-icon),
html.a11y-high-contrast body #global-message-display .message-close-btn-global {
    color: #fff !important;
}

html.a11y-high-contrast body #global-message-display .message-close-btn-global:hover {
    background: #222 !important;
}

.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.55); /* Темніший фон */
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    padding: 15px;
    opacity: 0; /* Для анімації появи */
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0s linear 0.3s;
}
.modal-overlay:not(.hidden) {
    opacity: 1;
    visibility: visible;
    transition: opacity 0.3s ease;
}

.modal-content {
    background: #fff;
    padding: 25px 30px;
    border-radius: 12px;
    min-width: 300px;
    max-width: 500px;
    width: 90%;
    box-shadow: 0 8px 30px rgba(0,0,0,0.2);
    text-align: left;
    transform: scale(0.95); /* Для анімації появи */
    transition: transform 0.3s ease;
}
.modal-overlay:not(.hidden) .modal-content {
    transform: scale(1);
}

.modal-title {
    margin-top: 0;
    margin-bottom: 18px;
    font-size: 1.5rem; /* Адаптуйте */
    color: var(--header-color, #4b0082); /* Приклад змінної CSS */
}
.modal-content p {
    margin-bottom: 20px;
    line-height: 1.6;
}

.modal-content,
.modal-content p,
.modal-content li,
.modal-content label,
.modal-content strong,
.modal-content small {
    color: #1f2937;
}

.modal-content .modal-title {
    color: #2f1364;
}
.modal-actions {
    display: flex;
    justify-content: flex-end; /* Або center */
    gap: 10px;
    margin-top: 25px;
}
.modal-actions .btn {
    min-width: 100px; /* Для кращого вигляду кнопок */
}

/* Accessibility panel - ensure IDs/classes match JS/HTML */
/* ... */
.accessibility-panel-title { /* If you changed h3 id to class for styling */
    margin: 0;
    color: white;
    font-size: 1.2rem;
}

/* Footer styling */
.footer-link {
    margin-left: 8px; /* Removed inline style */
    /* Add other styles if needed */
}

/* Keep modal actions resilient when accessibility settings increase text size. */
.modal-content {
    overflow-wrap: anywhere;
}

.modal-actions {
    flex-wrap: wrap;
}

.modal-actions .btn {
    flex: 1 1 150px;
    max-width: 100%;
    white-space: normal;
    overflow-wrap: anywhere;
    line-height: 1.25;
    text-align: center;
}

@media (max-width: 560px) {
    .modal-content {
        min-width: 0;
        width: min(92vw, 500px);
        padding: 22px 18px;
    }

    .modal-actions {
        justify-content: stretch;
    }

    .modal-actions .btn {
        flex-basis: 100%;
    }

    .manual-table-wrap {
        margin-inline: -4px;
    }

    .manual-table {
        width: max(100%, 520px);
    }

    .site-links-uniform .btn {
        width: min(100%, 320px);
    }

    .footer-site-nav .btn {
        min-width: 0;
    }
}