@font-face {
    font-family: "MathBlog Lispako";
    src: url("../fonts/MathBlog_Lispako.ttf") format("truetype");
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}

/* Палитра: тёплый нейтраль + чёрный хедер + лайм #F4FF67 */
:root {
    --bg-page: #f1efeb;
    --bg-elevated: #ffffff;
    --bg-elevated-2: #ebe8e2;
    --border-subtle: #e0ddd6;
    --border-strong: #d0ccc3;

    --text: #1c1917;
    --text-muted: #5c5852;
    --text-soft: #8a8478;

    --header-bg: #0b0b0b;
    --accent: #f4ff67;
    --accent-hover: #fcffa8;
    --accent-muted: #dfe88a;
    --nav-text: #f1efeb;

    --btn-bg: #2c2925;
    --btn-bg-hover: #181614;
    --btn-text: #faf7f1;

    --link: #5c4f2e;
    --link-hover: #2a2415;

    --radius: 12px;
    --radius-lg: 16px;
    --shadow-card: 0 4px 24px rgba(11, 11, 11, 0.08);
    --shadow-soft: 0 2px 8px rgba(11, 11, 11, 0.05);

    --badge-bg: #f0ebe2;
    --badge-text: #4a453d;
    --answer-bg: #e8f2ea;
    --answer-border: #9cc9a8;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
    background: var(--bg-page);
    color: var(--text);
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

.site-header {
    background: var(--header-bg);
    border-bottom: 1px solid rgba(244, 255, 103, 0.12);
    margin-bottom: 28px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
}

.site-header .header-bar {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
    align-items: center;
    padding-top: 16px;
    padding-bottom: 16px;
    gap: 12px 16px;
}

.brand {
    justify-self: start;
}

.header-center-title {
    justify-self: center;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.14em;
    font-family: "MathBlog Lispako", "Times New Roman", serif;
    font-size: clamp(11px, 2vw, 15px);
    font-weight: normal;
    color: #f4ff67;
    letter-spacing: 0.06em;
    line-height: 1;
    pointer-events: none;
}

.header-center-line {
    display: block;
    line-height: 1.05;
}

.site-header .nav {
    justify-self: end;
}

.brand-title {
    font-family: "MathBlog Lispako", "Times New Roman", serif;
    font-size: clamp(11px, 2vw, 15px);
    font-weight: normal;
    text-decoration: none;
    color: #f1efeb;
    letter-spacing: 0.06em;
    line-height: 1;
    display: inline-flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.14em;
}

.brand-line {
    display: block;
    line-height: 1.05;
    font-size: inherit;
}

.brand-title:hover {
    color: #fafaf8;
}

.nav {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px 22px;
}

.nav a {
    text-decoration: none;
    color: var(--nav-text);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.02em;
    padding: 6px 0;
    border-bottom: 2px solid transparent;
    transition: color 0.15s ease, border-color 0.15s ease;
}

.nav a:hover {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

.hero {
    background: var(--bg-elevated);
    border-radius: var(--radius-lg);
    padding: 28px;
    margin-bottom: 28px;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border-subtle);
}

.lead {
    font-size: 18px;
    color: var(--text-muted);
}

.search-form,
.filters-form {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 16px;
}

input[type="text"],
select {
    padding: 12px 14px;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius);
    background: var(--bg-elevated);
    color: var(--text);
    min-width: 220px;
}

input[type="text"]:focus,
select:focus {
    outline: 2px solid var(--accent-muted);
    outline-offset: 1px;
    border-color: var(--text-soft);
}

button {
    padding: 12px 18px;
    border: none;
    border-radius: var(--radius);
    background: var(--btn-bg);
    color: var(--btn-text);
    cursor: pointer;
    font-weight: 600;
    transition: background 0.15s ease, transform 0.1s ease;
}

button:hover {
    background: var(--btn-bg-hover);
}

button:active {
    transform: translateY(1px);
}

.sections-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 16px;
    margin-bottom: 32px;
}

.section-card {
    display: block;
    background: var(--bg-elevated);
    border-radius: var(--radius-lg);
    padding: 18px;
    text-decoration: none;
    color: inherit;
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--border-subtle);
    transition: border-color 0.15s ease, box-shadow 0.15s ease, transform 0.12s ease;
}

.section-card:hover {
    border-color: var(--accent-muted);
    box-shadow: var(--shadow-card);
    transform: translateY(-2px);
}

.section-title {
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text);
}

.section-count {
    color: var(--text-muted);
}

.filters,
.task-card {
    background: var(--bg-elevated);
    border-radius: var(--radius-lg);
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--border-subtle);
}

.task-head {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: flex-start;
    margin-bottom: 16px;
}

.task-body {
    line-height: 1.65;
    font-size: 17px;
}

/* Таблицы из выгрузки Word/ФИПИ (часто width="0" — растягиваем на карточку) */
.task-body table,
.task-body .MsoNormalTable {
    width: 100%;
    max-width: 100%;
    border-collapse: collapse;
    margin: 12px 0;
    table-layout: auto;
}

.task-body table[width="0"],
.task-body table[width='0'] {
    width: 100%;
}

.task-body td,
.task-body th {
    border: 1px solid var(--border-strong, #cbd5e1);
    padding: 6px 10px;
    vertical-align: middle;
}

.option-content table,
.option-content .MsoNormalTable {
    width: 100%;
    max-width: 100%;
    border-collapse: collapse;
    margin: 8px 0;
}

.option-content table[width="0"],
.option-content table[width='0'] {
    width: 100%;
}

.option-content td,
.option-content th {
    border: 1px solid var(--border-strong, #cbd5e1);
    padding: 4px 8px;
    vertical-align: middle;
}

.task-images {
    margin-top: 16px;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.task-images img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    border: 1px solid var(--border-subtle);
    background: var(--bg-elevated);
    padding: 6px;
}

.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 999px;
    background: var(--badge-bg);
    color: var(--badge-text);
    font-size: 12px;
    margin-left: 8px;
    border: 1px solid var(--border-subtle);
}

.options ul {
    padding-left: 20px;
}

.options li {
    margin-bottom: 12px;
}

.answer-box {
    margin-top: 20px;
    padding: 14px 16px;
    border-radius: var(--radius);
    background: var(--answer-bg);
    border: 1px solid var(--answer-border);
}

.pagination {
    display: flex;
    justify-content: center;
    gap: 16px;
    align-items: center;
    margin: 24px 0 40px;
}

.pagination a {
    text-decoration: none;
    color: var(--link);
    font-weight: 600;
    padding: 6px 12px;
    border-radius: 8px;
    transition: color 0.15s ease, background 0.15s ease;
}

.pagination a:hover {
    color: var(--link-hover);
    background: var(--bg-elevated-2);
}

.meta {
    color: var(--text-muted);
    margin-top: 12px;
}

/* MathJax */
.task-body mjx-container {
    font-size: 1.08em !important;
}

.task-body mjx-container[display="true"] {
    display: block;
    margin: 16px 0 !important;
    padding: 10px 0;
    overflow-x: auto;
    overflow-y: hidden;
}

.task-body p {
    margin: 10px 0;
}

.task-body .MathJax,
.task-body mjx-container[jax="SVG"] {
    color: var(--text);
}

.matching-block {
    margin: 20px 0;
}

.matching-title {
    margin: 18px 0 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-muted);
}

.matching-row {
    display: grid;
    gap: 16px;
    margin-bottom: 18px;
}

.matching-row-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.matching-cell {
    background: var(--bg-elevated-2);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    padding: 14px;
}

.matching-label {
    font-weight: 700;
    margin-bottom: 8px;
}

.matching-value {
    line-height: 1.6;
    font-size: 17px;
}

.graph-cell img {
    display: block;
    width: 100%;
    max-width: 260px;
    height: auto;
    margin-top: 8px;
    border-radius: 8px;
    border: 1px solid var(--border-subtle);
    background: var(--bg-elevated);
    padding: 6px;
}

@media (max-width: 900px) {
    .matching-row-3 {
        grid-template-columns: 1fr;
    }
}

.graphs-row {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
    margin: 12px 0 20px;
    align-items: start;
}

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

.graph-label {
    font-weight: 700;
    margin-bottom: 8px;
}

.graph-item img {
    display: block;
    width: 100%;
    max-width: 220px;
    height: auto;
    margin: 0 auto;
}

@media (max-width: 900px) {
    .graphs-row {
        grid-template-columns: 1fr;
    }
}

/* Авторизация */
.nav-sep {
    display: inline-block;
    width: 1px;
    height: 1em;
    margin: 0 6px;
    background: rgba(241, 239, 235, 0.25);
    vertical-align: middle;
}

.nav-user-link {
    font-weight: 700;
    color: var(--accent) !important;
    border-bottom-color: rgba(244, 255, 103, 0.45) !important;
}

.nav-user-link:hover {
    color: var(--accent-hover) !important;
}

.user-menu {
    position: relative;
    display: flex;
    align-items: center;
}

.user-menu-trigger {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    border: 1px solid rgba(241, 239, 235, 0.35);
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.06);
    color: var(--nav-text);
    cursor: pointer;
    transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.user-menu-trigger:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(244, 255, 103, 0.45);
    color: var(--accent);
}

.user-menu-trigger[aria-expanded="true"] {
    background: rgba(244, 255, 103, 0.12);
    border-color: var(--accent);
    color: var(--accent);
}

.user-menu--topbar-dark .user-menu-trigger {
    background: #0b0b0b;
    border: 1px solid #2a2a2a;
    color: #edede6;
}

.user-menu--topbar-dark .user-menu-trigger:hover {
    background: #1a1a1a;
    border-color: #3d3d38;
    color: #ffffff;
}

.user-menu--topbar-dark .user-menu-trigger[aria-expanded="true"] {
    background: #1a1a1a;
    border-color: var(--accent);
    color: var(--accent);
}

.user-menu-icon {
    width: 22px;
    height: 22px;
    display: block;
}

/* Хедер: кнопка и иконка пользователя −30% от базового размера */
.site-header .user-menu-trigger {
    width: 28px;
    height: 28px;
    border-radius: 7px;
}

.site-header .user-menu-icon {
    width: 15.4px;
    height: 15.4px;
}

.user-menu-dropdown {
    position: absolute;
    right: 0;
    top: calc(100% + 8px);
    min-width: 260px;
    padding: 8px 0;
    margin: 0;
    background: var(--bg-elevated);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius);
    box-shadow: var(--shadow-card);
    z-index: 200;
    color: #000000;
}

.user-menu-name {
    display: block;
    padding: 14px 20px 12px;
    font-size: 13px;
    font-weight: 700;
    color: #000000;
    border-bottom: 1px solid var(--border-subtle);
    margin-bottom: 6px;
    text-decoration: none;
    cursor: pointer;
}

.user-menu-name:hover {
    background: var(--bg-elevated-2);
    color: #000000;
}

.user-menu-item {
    display: block;
    padding: 12px 20px;
    font-size: 14px;
    font-weight: 600;
    color: #000000;
    text-decoration: none;
    transition: background 0.12s ease;
}

.user-menu-item:hover {
    background: var(--bg-elevated-2);
    color: #000000;
}

.user-menu-item--danger {
    color: #991b1b;
}

.user-menu-item--danger:hover {
    background: #fef2f2;
    color: #7f1d1d;
}

/* Пункты меню: не наследуют стиль ссылок хедера (.nav a) */
.user-menu .user-menu-dropdown .user-menu-item {
    color: #000000;
    padding: 12px 20px;
    border-bottom: none;
    letter-spacing: normal;
}

.user-menu .user-menu-dropdown .user-menu-item:hover {
    color: #000000;
    border-bottom: none;
}

.user-menu .user-menu-dropdown .user-menu-item.user-menu-item--danger {
    color: #991b1b;
}

.user-menu .user-menu-dropdown .user-menu-item.user-menu-item--danger:hover {
    color: #7f1d1d;
}

.edit-auth-bar .user-menu-trigger {
    border-color: rgba(241, 239, 235, 0.35);
}

.edit-auth-bar .user-menu-dropdown {
    top: calc(100% + 6px);
}

.auth-card-wrap {
    max-width: 420px;
    margin: 0 auto;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: 20px;
}

.auth-label {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-muted);
}

.auth-label input,
.auth-label select {
    min-width: 0;
    width: 100%;
}

/* Логин и пароль — одинаковый вид (глобально стилизован только type=text) */
.auth-label input[type="text"],
.auth-label input[type="password"] {
    padding: 12px 14px;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius);
    background: var(--bg-elevated);
    color: var(--text);
    font-size: 16px;
    line-height: 1.35;
    -webkit-appearance: none;
    appearance: none;
    box-sizing: border-box;
}

.auth-label input[type="text"]:focus,
.auth-label input[type="password"]:focus {
    outline: 2px solid var(--accent-muted);
    outline-offset: 1px;
    border-color: var(--text-soft);
}

.site-header--auth .header-bar {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 12px 20px;
}

.site-header--auth .nav {
    display: none;
}

.site-header--auth .brand {
    justify-self: auto;
}

.site-header--auth .header-center-title {
    justify-self: auto;
    text-align: right;
    align-items: flex-end;
    margin-left: auto;
}

.auth-error {
    color: #b91c1c;
    font-weight: 600;
    margin: 12px 0 0;
}

.auth-ok {
    color: #15803d;
    font-weight: 600;
    margin: 12px 0 0;
}

.account-dl {
    margin: 16px 0 0;
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 8px 24px;
}

.account-dl dt {
    margin: 0;
    font-weight: 600;
    color: var(--text-muted);
}

.account-dl dd {
    margin: 0;
}

.edit-auth-bar {
    background: var(--header-bg);
    border-bottom: 1px solid rgba(244, 255, 103, 0.12);
    margin: -8px 0 20px;
    padding: 10px 0;
}

.edit-auth-bar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px 16px;
}

.edit-auth-right {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px 18px;
}

.edit-auth-link {
    color: var(--nav-text);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    border-bottom: 2px solid transparent;
}

.edit-auth-link:hover {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

.edit-auth-user {
    color: var(--accent);
    text-decoration: none;
    font-size: 14px;
    font-weight: 700;
    border-bottom: 2px solid rgba(244, 255, 103, 0.45);
}

.edit-auth-user:hover {
    color: var(--accent-hover);
}