/* Спільний layout «сторінка статті» — конспект уроку + блог */

.content-page-main {
    width: 100%;
    max-width: 72rem;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1rem;
    padding-right: 1rem;
}

@media (min-width: 640px) {
    .content-page-main {
        padding-left: 1.5rem;
        padding-right: 1.5rem;
    }
}

.content-page-article {
    background: #fff;
    border-radius: 2.5rem;
    border: 2px solid #e5e7eb;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.04);
    overflow: hidden;
}

.content-page-body {
    padding: 1.5rem 1.25rem 2rem;
}

@media (min-width: 640px) {
    .content-page-body {
        padding: 2.5rem 2.5rem 3rem;
    }
}

@media (min-width: 768px) {
    .content-page-body {
        padding: 3rem 3.5rem 3.5rem;
    }
}

@media (min-width: 1024px) {
    .content-page-body {
        padding: 3.5rem 4.5rem 4rem;
    }
}

.content-page-eyebrow {
    display: block;
    font-size: 0.625rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: #1cb0f6;
    margin-bottom: 0.75rem;
}

.content-page-title {
    font-size: clamp(1.875rem, 3.5vw, 3rem);
    font-weight: 900;
    line-height: 1.08;
    letter-spacing: -0.025em;
    color: #111827;
    margin: 0 0 2rem;
    text-wrap: balance;
    word-break: break-word;
}

.content-page-tabs {
    display: flex;
    gap: 0.5rem;
    padding: 0.375rem;
    margin-bottom: 2rem;
    max-width: 26rem;
    background: #f9fafb;
    border-radius: 1rem;
    border: 2px solid #f3f4f6;
}

.content-page-topbar {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid #e2e8f0;
    box-shadow: 0 1px 12px rgba(28, 176, 246, 0.06);
}

.content-page-topbar__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding-top: 0.75rem;
    padding-bottom: 0.75rem;
}

.content-page-topbar__actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
}

.content-page-action-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.875rem;
    font-size: 0.6875rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: #1cb0f6;
    background: #eff6ff;
    border: 2px solid #dbeafe;
    border-radius: 0.75rem;
    cursor: pointer;
    outline: none;
    transition: background 0.15s, border-color 0.15s, transform 0.1s;
}

.content-page-action-btn:hover {
    background: #dbeafe;
    border-color: #93c5fd;
}

.content-page-action-btn:active {
    transform: scale(0.97);
}

.content-page-prose.rich-content {
    font-size: 1.0625rem;
}

@media (min-width: 768px) {
    .content-page-prose.rich-content {
        font-size: 1.125rem;
    }
}

.content-page-prose.rich-content h1 { font-size: 2.25rem; }
.content-page-prose.rich-content h2 { font-size: 1.75rem; }
.content-page-prose.rich-content h3 { font-size: 1.35rem; }

.content-page-prose.rich-content .rc-grid {
    gap: 1.25rem;
}

@media (min-width: 768px) {
    .content-page-prose.rich-content .rc-grid--2 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

.lesson-homework-upload {
    margin-top: 2.5rem;
    padding-top: 2rem;
    border-top: 2px solid #f3f4f6;
}

/* Dark theme */
[data-theme="dark"] .content-page-article {
    background: #0f172a;
    border-color: rgba(255, 255, 255, 0.1);
    box-shadow: 0 16px 50px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .content-page-title {
    color: #f1f5f9;
}

[data-theme="dark"] .content-page-tabs {
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .content-page-topbar {
    background: rgba(15, 23, 42, 0.92) !important;
    border-color: rgba(255, 255, 255, 0.08) !important;
}

[data-theme="dark"] .content-page-action-btn {
    background: rgba(28, 176, 246, 0.12);
    border-color: rgba(28, 176, 246, 0.25);
    color: #38bdf8;
}

[data-theme="dark"] .lesson-homework-upload {
    border-top-color: rgba(255, 255, 255, 0.08);
}

/* Конспект / блог — lesson-page не має .marketing-page, тому prose лишається світлим */
[data-theme="dark"] .lesson-page .prose,
[data-theme="dark"] .lesson-page .content-page-prose.rich-content,
[data-theme="dark"] .content-page-article .content-page-prose.rich-content {
    color: var(--text-muted, #94a3b8);
}

[data-theme="dark"] .lesson-page .prose p,
[data-theme="dark"] .lesson-page .prose li,
[data-theme="dark"] .lesson-page .content-page-prose.rich-content p,
[data-theme="dark"] .lesson-page .content-page-prose.rich-content li,
[data-theme="dark"] .content-page-article .content-page-prose.rich-content p,
[data-theme="dark"] .content-page-article .content-page-prose.rich-content li {
    color: var(--text-muted, #94a3b8) !important;
}

[data-theme="dark"] .lesson-page .prose h1,
[data-theme="dark"] .lesson-page .prose h2,
[data-theme="dark"] .lesson-page .prose h3,
[data-theme="dark"] .lesson-page .prose h4,
[data-theme="dark"] .lesson-page .content-page-prose.rich-content h1,
[data-theme="dark"] .lesson-page .content-page-prose.rich-content h2,
[data-theme="dark"] .lesson-page .content-page-prose.rich-content h3,
[data-theme="dark"] .content-page-article .content-page-prose.rich-content h1,
[data-theme="dark"] .content-page-article .content-page-prose.rich-content h2,
[data-theme="dark"] .content-page-article .content-page-prose.rich-content h3 {
    color: var(--text-color, #f1f5f9) !important;
}

[data-theme="dark"] .lesson-page .prose h3,
[data-theme="dark"] .lesson-page .content-page-prose.rich-content h3,
[data-theme="dark"] .content-page-article .content-page-prose.rich-content h3 {
    color: #38bdf8 !important;
}

[data-theme="dark"] .lesson-page .prose strong,
[data-theme="dark"] .lesson-page .prose b,
[data-theme="dark"] .lesson-page .content-page-prose.rich-content strong,
[data-theme="dark"] .lesson-page .content-page-prose.rich-content b,
[data-theme="dark"] .content-page-article .content-page-prose.rich-content strong,
[data-theme="dark"] .content-page-article .content-page-prose.rich-content b {
    color: var(--text-color, #f1f5f9) !important;
    background-color: rgba(28, 176, 246, 0.18) !important;
}

[data-theme="dark"] .lesson-page .prose a,
[data-theme="dark"] .lesson-page .content-page-prose.rich-content a,
[data-theme="dark"] .content-page-article .content-page-prose.rich-content a {
    color: #7dd3fc !important;
}

[data-theme="dark"] .lesson-page .prose blockquote,
[data-theme="dark"] .lesson-page .prose blockquote p,
[data-theme="dark"] .lesson-page .content-page-prose.rich-content blockquote,
[data-theme="dark"] .lesson-page .content-page-prose.rich-content blockquote p,
[data-theme="dark"] .content-page-article .content-page-prose.rich-content blockquote,
[data-theme="dark"] .content-page-article .content-page-prose.rich-content blockquote p {
    color: #e2e8f0 !important;
}

[data-theme="dark"] .lesson-page .content-page-prose.rich-content em,
[data-theme="dark"] .lesson-page .content-page-prose.rich-content i,
[data-theme="dark"] .content-page-article .content-page-prose.rich-content em,
[data-theme="dark"] .content-page-article .content-page-prose.rich-content i {
    color: var(--text-muted, #94a3b8);
}

[data-theme="dark"] .lesson-page .text-gray-900,
[data-theme="dark"] .lesson-page .text-gray-800,
[data-theme="dark"] .lesson-page .text-gray-700,
[data-theme="dark"] .content-page-article .text-gray-900,
[data-theme="dark"] .content-page-article .text-gray-800,
[data-theme="dark"] .content-page-article .text-gray-700 {
    color: var(--text-color, #f1f5f9) !important;
}

[data-theme="dark"] .lesson-page .text-gray-600,
[data-theme="dark"] .lesson-page .text-gray-500,
[data-theme="dark"] .lesson-page .text-gray-400,
[data-theme="dark"] .content-page-article .text-gray-600,
[data-theme="dark"] .content-page-article .text-gray-500,
[data-theme="dark"] .content-page-article .text-gray-400 {
    color: var(--text-muted, #94a3b8) !important;
}

[data-theme="dark"] .lesson-page .bg-gray-100,
[data-theme="dark"] .lesson-page .bg-gray-50,
[data-theme="dark"] .content-page-article .bg-gray-100,
[data-theme="dark"] .content-page-article .bg-gray-50 {
    background-color: var(--surface-muted, #334155) !important;
}

[data-theme="dark"] .lesson-page .lesson-homework-upload {
    background: linear-gradient(135deg, rgba(28, 176, 246, 0.1) 0%, rgba(15, 23, 42, 0.6) 100%) !important;
    border-color: rgba(28, 176, 246, 0.25) !important;
}

[data-theme="dark"] .lesson-page .btn-tab.inactive {
    color: var(--text-muted, #94a3b8) !important;
}

[data-theme="dark"] .lesson-page .btn-tab.inactive:hover {
    background-color: rgba(255, 255, 255, 0.06) !important;
    color: var(--text-color, #f1f5f9) !important;
}

/* —— Article mini-test —— */
.article-test-card {
    border-radius: 1.75rem;
    border: 2px solid rgba(99, 102, 241, 0.18);
    background: rgba(238, 242, 255, 0.65);
    padding: 1.25rem 1.35rem 1.5rem;
}

@media (min-width: 640px) {
    .article-test-card {
        padding: 1.5rem 1.75rem 1.75rem;
    }
}

[data-theme="dark"] .article-test-card {
    border-color: rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.05);
}

.article-test-head {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 0.25rem;
}

@media (min-width: 640px) {
    .article-test-head {
        flex-direction: row;
        align-items: stretch;
        gap: 1.25rem;
    }
}

.article-test-head__copy {
    flex: 1 1 auto;
    min-width: 0;
    text-align: left;
}

.article-test-kicker {
    margin: 0 0 0.5rem;
    font-size: 0.7rem;
    font-weight: 900;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #6366f1;
}

[data-theme="dark"] .article-test-kicker {
    color: #818cf8;
}

.article-test-title {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 900;
    line-height: 1.25;
    color: #0f172a;
}

@media (min-width: 640px) {
    .article-test-title { font-size: 1.5rem; }
}

[data-theme="dark"] .article-test-title {
    color: #f1f5f9;
}

.article-test-reward {
    margin: 0.5rem 0 0;
    font-size: 0.875rem;
    font-weight: 700;
    color: #64748b;
}

[data-theme="dark"] .article-test-reward {
    color: #94a3b8;
}

.article-test-start-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    min-height: 3.25rem;
    padding: 0.85rem 1.25rem;
    border: none;
    border-radius: 0.9rem;
    background: #1cb0f6;
    color: #fff;
    font-weight: 900;
    font-size: 0.95rem;
    cursor: pointer;
    outline: none;
    box-shadow: 0 4px 0 #1899d6;
    transition: transform 0.18s ease, box-shadow 0.18s ease, background-color 0.18s ease, filter 0.18s ease;
}

@media (min-width: 640px) {
    .article-test-start-btn {
        flex: 1 1 42%;
        max-width: none;
        align-self: stretch;
        min-width: 12rem;
    }
}

.article-test-start-btn:hover {
    background: #0ea5e9;
    transform: translateY(-1px);
    box-shadow: 0 5px 0 #1899d6;
    filter: brightness(1.03);
}

.article-test-start-btn:active {
    transform: translateY(2px);
    box-shadow: 0 2px 0 #1899d6;
}

.article-test-start-btn--inline {
    width: auto;
    min-width: 10rem;
    text-decoration: none;
}

.article-test-start-btn.hidden,
.article-test-login-cta.hidden {
    display: none !important;
}

.article-test-login-cta {
    text-align: center;
    padding: 0.75rem 0 0.25rem;
}

.article-test-login-cta p {
    margin: 0 0 1rem;
    font-weight: 700;
    color: #475569;
}

[data-theme="dark"] .article-test-login-cta p {
    color: #cbd5e1;
}

.article-test-quiz {
    margin-top: 1.25rem;
}

.article-test-quiz:empty {
    margin-top: 0;
}

.article-test-progress {
    height: 0.35rem;
    border-radius: 999px;
    background: rgba(148, 163, 184, 0.25);
    overflow: hidden;
    margin-bottom: 1rem;
}

.article-test-progress__fill {
    height: 100%;
    width: 0;
    border-radius: inherit;
    background: linear-gradient(90deg, #1cb0f6, #58cc02);
    transform-origin: left center;
    transition: width 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

.article-test-q {
    animation: article-test-enter 0.35s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.article-test-q.is-leaving {
    animation: article-test-leave 0.22s ease forwards;
}

.article-test-meta {
    margin: 0 0 0.5rem;
    font-size: 0.7rem;
    font-weight: 900;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #94a3b8;
}

.article-test-question {
    margin: 0 0 1rem;
    font-size: 1.125rem;
    font-weight: 900;
    line-height: 1.35;
    color: #0f172a;
}

[data-theme="dark"] .article-test-question {
    color: #f8fafc;
}

.article-test-options {
    display: grid;
    gap: 0.6rem;
}

.article-test-opt {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
    text-align: left;
    padding: 0.9rem 1rem;
    border: 2px solid #e2e8f0;
    border-radius: 0.9rem;
    background: #f8fafc;
    color: #1e293b;
    font-weight: 700;
    cursor: pointer;
    outline: none;
    animation: article-test-enter 0.35s cubic-bezier(0.22, 1, 0.36, 1) both;
    transition:
        transform 0.18s ease,
        border-color 0.18s ease,
        background-color 0.18s ease,
        box-shadow 0.18s ease,
        color 0.18s ease;
}

[data-theme="dark"] .article-test-opt {
    background: rgba(45, 58, 84, 0.85);
    border-color: rgba(148, 163, 184, 0.22);
    color: #e2e8f0;
}

.article-test-opt__letter {
    flex: 0 0 auto;
    width: 1.75rem;
    height: 1.75rem;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 900;
    background: rgba(28, 176, 246, 0.12);
    color: #0284c7;
    transition: background-color 0.18s ease, color 0.18s ease, transform 0.18s ease;
}

[data-theme="dark"] .article-test-opt__letter {
    background: rgba(56, 189, 248, 0.16);
    color: #7dd3fc;
}

.article-test-opt:hover:not(:disabled) {
    transform: translateY(-2px) scale(1.01);
    border-color: #1cb0f6;
    box-shadow: 0 8px 20px rgba(28, 176, 246, 0.18);
}

.article-test-opt:hover:not(:disabled) .article-test-opt__letter {
    transform: scale(1.08);
    background: #1cb0f6;
    color: #fff;
}

.article-test-opt:active:not(:disabled) {
    transform: translateY(0) scale(0.99);
}

.article-test-opt.is-correct {
    border-color: #58cc02 !important;
    background: rgba(88, 204, 2, 0.14) !important;
    color: #166534 !important;
    box-shadow: 0 0 0 3px rgba(88, 204, 2, 0.2);
    animation: article-test-pop 0.35s ease;
}

.article-test-opt.is-wrong {
    border-color: #ef4444 !important;
    background: rgba(239, 68, 68, 0.12) !important;
    color: #991b1b !important;
    animation: article-test-shake 0.4s ease;
}

[data-theme="dark"] .article-test-opt.is-correct {
    color: #bbf7d0 !important;
}

[data-theme="dark"] .article-test-opt.is-wrong {
    color: #fecaca !important;
}

.article-test-opt:disabled {
    cursor: default;
    opacity: 0.72;
}

.article-test-opt.is-correct:disabled,
.article-test-opt.is-wrong:disabled {
    opacity: 1;
}

.article-test-result {
    text-align: center;
    padding: 1.25rem 0.5rem 0.5rem;
    animation: article-test-enter 0.4s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.article-test-result__emoji {
    font-size: 2.75rem;
    line-height: 1;
    margin-bottom: 0.65rem;
    animation: article-test-pop 0.45s ease 0.05s both;
}

.article-test-result__title {
    margin: 0;
    font-size: 1.35rem;
    font-weight: 900;
    color: #0f172a;
}

[data-theme="dark"] .article-test-result__title {
    color: #f1f5f9;
}

.article-test-result__score {
    margin: 0.5rem 0 0;
    font-weight: 700;
    color: #64748b;
}

.article-test-result__reward {
    margin: 0.65rem 0 0;
    font-weight: 900;
    color: #1cb0f6;
}

.article-test-result__hint {
    margin: 0.65rem 0 0;
    font-size: 0.875rem;
    font-weight: 700;
    color: #94a3b8;
}

.article-test-result__retry {
    margin-top: 0;
}

.article-test-result__retry-wrap {
    display: flex;
    justify-content: center;
    margin-top: 1.25rem;
    padding-top: 0.25rem;
}

.article-test-review {
    margin-top: 1.5rem;
    text-align: left;
    opacity: 1;
    transform: none;
}

.article-test-review__title {
    margin: 0 0 0.85rem;
    font-size: 1rem;
    font-weight: 900;
    color: #0f172a;
}

[data-theme="dark"] .article-test-review__title {
    color: #f1f5f9;
}

.article-test-review__list {
    display: grid;
    gap: 0.75rem;
}

.article-test-review__item {
    display: flex;
    gap: 0.75rem;
    align-items: flex-start;
    padding: 0.9rem 1rem;
    border-radius: 1rem;
    border: 2px solid #e2e8f0;
    background: #f8fafc;
}

[data-theme="dark"] .article-test-review__item {
    border-color: rgba(148, 163, 184, 0.2);
    background: rgba(255, 255, 255, 0.04);
}

.article-test-review__item.is-ok {
    border-color: rgba(88, 204, 2, 0.35);
    background: rgba(88, 204, 2, 0.08);
}

.article-test-review__item.is-miss {
    border-color: rgba(239, 68, 68, 0.3);
    background: rgba(239, 68, 68, 0.07);
}

.article-test-review__badge {
    flex: 0 0 auto;
    width: 1.75rem;
    height: 1.75rem;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 900;
    margin-top: 0.1rem;
}

.article-test-review__item.is-ok .article-test-review__badge {
    background: #58cc02;
    color: #fff;
}

.article-test-review__item.is-miss .article-test-review__badge {
    background: #ef4444;
    color: #fff;
}

.article-test-review__body {
    flex: 1 1 auto;
    min-width: 0;
}

.article-test-review__num {
    margin: 0 0 0.25rem;
    font-size: 0.65rem;
    font-weight: 900;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #94a3b8;
}

.article-test-review__q {
    margin: 0 0 0.55rem;
    font-size: 0.95rem;
    font-weight: 900;
    line-height: 1.35;
    color: #0f172a;
}

[data-theme="dark"] .article-test-review__q {
    color: #f1f5f9;
}

.article-test-review__ans {
    margin: 0.4rem 0 0;
    padding: 0.55rem 0.75rem;
    border-radius: 0.7rem;
    font-size: 0.875rem;
    font-weight: 800;
    line-height: 1.4;
    color: #334155;
    border: 1px solid transparent;
}

[data-theme="dark"] .article-test-review__ans {
    color: #e2e8f0;
}

.article-test-review__ans span {
    font-weight: 800;
    opacity: 0.78;
}

.article-test-review__ans.is-wrong {
    background: #fef2f2;
    border-color: #fecaca;
    color: #7f1d1d;
}

[data-theme="dark"] .article-test-review__ans.is-wrong {
    background: #7f1d1d;
    border-color: #991b1b;
    color: #ffffff;
}

.article-test-review__ans.is-correct {
    background: #f0fdf4;
    border-color: #bbf7d0;
    color: #14532d;
}

[data-theme="dark"] .article-test-review__ans.is-correct {
    background: #14532d;
    border-color: #166534;
    color: #ffffff;
}

[data-theme="dark"] .article-test-review__ans.is-wrong span,
[data-theme="dark"] .article-test-review__ans.is-correct span {
    color: #ffffff;
    opacity: 0.85;
}

.article-test-review__ans.is-wrong span,
.article-test-review__ans.is-correct span {
    color: inherit;
}

.article-test-review__explain {
    margin: 0.65rem 0 0;
    padding: 0.65rem 0.75rem;
    border-radius: 0.75rem;
    background: rgba(28, 176, 246, 0.1);
    border: 1px solid rgba(28, 176, 246, 0.22);
    color: #0369a1;
    font-size: 0.85rem;
    font-weight: 700;
    line-height: 1.45;
}

.article-test-review__explain i {
    margin-right: 0.35rem;
    opacity: 0.9;
}

[data-theme="dark"] .article-test-review__explain {
    background: rgba(56, 189, 248, 0.1);
    border-color: rgba(56, 189, 248, 0.22);
    color: #7dd3fc;
}

@keyframes article-test-enter {
    from {
        opacity: 0;
        transform: translateY(12px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes article-test-leave {
    to {
        opacity: 0;
        transform: translateY(-8px) scale(0.98);
    }
}

@keyframes article-test-pop {
    0% { transform: scale(0.92); }
    55% { transform: scale(1.06); }
    100% { transform: scale(1); }
}

@keyframes article-test-shake {
    0%, 100% { transform: translateX(0); }
    20% { transform: translateX(-5px); }
    40% { transform: translateX(5px); }
    60% { transform: translateX(-3px); }
    80% { transform: translateX(3px); }
}

@media (prefers-reduced-motion: reduce) {
    .article-test-q,
    .article-test-q.is-leaving,
    .article-test-opt,
    .article-test-opt.is-correct,
    .article-test-opt.is-wrong,
    .article-test-result,
    .article-test-result__emoji,
    .article-test-progress__fill,
    .article-test-start-btn {
        animation: none !important;
        transition: none !important;
    }
}