/* ============================================================
   COMMON UI COMPONENTS (GIC Design System)
   ============================================================ */

/* ── Reset & Base ── */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-inter);
    font-size: var(--text-button-label);
    line-height: var(--leading-caption);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* Skip link: первый фокус с Tab — переход к основному содержимому */
.skip-link {
    position: absolute;
    left: 0;
    top: 0;
    z-index: 10000;
    padding: 0.65rem 1rem;
    font-family: var(--font-inter);
    font-size: var(--text-caption);
    font-weight: var(--font-weight-semibold);
    color: var(--bg-primary);
    background: var(--text-primary);
    border-radius: 0 0 var(--radius-lg) 0;
    text-decoration: none;
    transform: translateY(-120%);
    transition: transform 0.15s ease;
}

.skip-link:focus {
    outline: 2px solid var(--color-accent-blue);
    outline-offset: 2px;
}

.skip-link:focus,
.skip-link:focus-visible {
    transform: translateY(0);
}

/* ── Typography ── */
h1, h2 {
    font-family: var(--font-ppmondwest);
    font-weight: var(--font-weight-regular);
    color: var(--text-primary);
    line-height: var(--leading-display);
    letter-spacing: -0.02em;
}

h3 {
    font-family: var(--font-inter);
    font-weight: var(--font-weight-semibold);
    font-size: var(--text-subheading);
    line-height: var(--leading-subheading);
    letter-spacing: var(--tracking-subheading);
    color: var(--text-primary);
}

h4 {
    font-family: var(--font-inter);
    font-weight: var(--font-weight-semibold);
    font-size: var(--text-subheading);
    line-height: var(--leading-subheading);
    letter-spacing: var(--tracking-subheading);
    color: var(--text-primary);
}

/* Design system — Subheading (Inter): блоковые заголовки, акцентные строки */
.ds-subheading {
    font-family: var(--font-inter);
    font-weight: var(--font-weight-semibold);
    font-size: var(--text-subheading);
    line-height: var(--leading-subheading);
    letter-spacing: var(--tracking-subheading);
    color: var(--text-primary);
}

/* Design system — Heading H2 (PPMondwest): секционные заголовки */
.ds-heading-h2 {
    font-family: var(--font-ppmondwest);
    font-size: var(--ds-heading-size-mobile);
    font-weight: var(--font-weight-regular);
    line-height: 1.1;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    min-width: 0;
}

/* Design system — Heading H3 (PPMondwest): карточки уровня, типа задачи и т.п. */
.ds-heading-h3,
.level-name,
.task-type-card__title {
    font-family: var(--font-ppmondwest);
    font-size: var(--text-mondwest-h3);
    font-weight: var(--font-weight-regular);
    line-height: var(--leading-mondwest-h3);
    letter-spacing: var(--tracking-mondwest-h3);
    color: var(--text-primary);
    min-width: 0;
}

/* Design system — Body (Inter): абзацы, основной текст UI */
.ds-body {
    font-family: var(--font-inter);
    font-weight: var(--font-weight-regular);
    font-size: var(--text-button-label);
    line-height: var(--leading-button-label);
    letter-spacing: var(--tracking-button-label);
}

/* Design system — Emphasis (Inter): усиление фрагментов в тексте */
.ds-emphasis {
    font-family: var(--font-inter);
    font-size: var(--text-emphasis);
    font-weight: var(--font-weight-emphasis);
    line-height: var(--leading-emphasis);
    letter-spacing: var(--tracking-emphasis);
    color: var(--text-primary);
}

/* Design system — Caption (Inter): вторичный текст, подписи */
.ds-caption {
    font-family: var(--font-inter);
    font-weight: var(--font-weight-regular);
    font-size: var(--text-caption);
    line-height: var(--leading-caption);
    letter-spacing: var(--tracking-caption);
    color: var(--text-secondary);
}

p {
    font-family: var(--font-inter);
    font-size: var(--text-caption);
    font-weight: var(--font-weight-regular);
    line-height: var(--leading-caption);
    letter-spacing: var(--tracking-caption);
    color: var(--text-secondary);
    max-width: 60ch;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ── Buttons ── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-inter);
    font-size: var(--text-button);
    font-weight: var(--font-weight-button);
    line-height: var(--leading-button-label);
    letter-spacing: var(--tracking-button-label);
    cursor: pointer;
    text-decoration: none;
    border: none;
    height: var(--height-button);
    opacity: 1;
    transition: opacity 0.15s ease, background 0.15s ease, color 0.15s ease;
}

.btn:hover  { opacity: 0.85; }
.btn:active { opacity: 1; }
.btn:focus-visible { outline: 2px solid var(--text-primary); outline-offset: 3px; }

.btn-primary {
    background: var(--bg-inverse);
    color: var(--text-inverse);
    border-radius: 4px;
    padding: 10px 20px;
    border: 1px solid var(--bg-inverse);
    opacity: 1;
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border-radius: 4px;
    padding: 10px 20px;
    border: 1px solid var(--text-primary);
}

/* ── Badges ── */
.ui-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
    width: fit-content;
    height: 22px;
    padding: 0 10px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: var(--font-inter);
    font-size: 10px;
    font-weight: var(--font-weight-semibold);
    line-height: 1;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--text-secondary);
    white-space: nowrap;
}

/* Квадратный индекс пункта (Task type card и др.) — фрагмент partials/component-step-index-badge.html */
.step-index-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
    width: 1.25rem;
    height: 1.25rem;
    flex-shrink: 0;
    padding: 0;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: var(--font-inter);
    font-size: 11px;
    font-weight: var(--font-weight-semibold);
    font-variant-numeric: tabular-nums;
    line-height: 1;
    letter-spacing: 0;
    text-transform: none;
    color: var(--text-secondary);
}

/* ── Elevated Card ── */
.ui-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.75rem;
    transition: transform 0.2s ease;
    position: relative;
    overflow: hidden;
}

.ui-card:hover {
    transform: translateY(-2px);
}

/* ── Task type card (Bonuses — Task Types; UI Kit) ── */
.task-type-card.ui-card {
    display: flex;
    flex-direction: column;
    background: var(--bg-primary);
}

.task-type-card > .ui-badge {
    margin-bottom: 1rem;
    align-self: flex-start;
}

.task-type-card__title {
    margin: 0 0 0.75rem;
}

.task-type-card__lead {
    font-family: var(--font-inter);
    font-size: var(--text-caption);
    font-weight: var(--font-weight-regular);
    line-height: var(--leading-caption);
    letter-spacing: var(--tracking-caption);
    max-width: none;
    color: var(--text-secondary);
    margin: 0;
}

.task-type-card__list {
    margin-top: 1.5rem;
    padding-left: 0;
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    flex: 1;
}

.task-type-card__list li {
    font-family: var(--font-inter);
    font-size: var(--text-caption);
    font-weight: var(--font-weight-regular);
    line-height: var(--leading-caption);
    letter-spacing: var(--tracking-caption);
    color: var(--text-secondary);
    display: flex;
    align-items: flex-start;
    gap: 0.625rem;
}

.task-type-card__list li .step-index-badge {
    margin-top: 0.125em;
}

.task-type-card__payout {
    margin-top: 1.5rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    font-family: var(--font-inter);
    font-size: var(--text-caption);
    font-weight: var(--font-weight-regular);
    line-height: var(--leading-caption);
    letter-spacing: var(--tracking-caption);
    color: var(--text-secondary);
}

.task-type-card__meta strong {
    color: var(--text-primary);
    font-weight: var(--font-weight-bold);
}

.task-type-card__amount {
    font-family: var(--font-inter);
    font-weight: var(--font-weight-semibold);
    font-size: var(--text-subheading);
    line-height: var(--leading-subheading);
    letter-spacing: var(--tracking-subheading);
    color: var(--color-success-green);
    flex-shrink: 0;
}

[data-theme="dark"] .task-type-card.ui-card {
    background: var(--bg-secondary);
    border-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .task-type-card__title {
    color: var(--text-primary);
}

[data-theme="dark"] .task-type-card__lead,
[data-theme="dark"] .task-type-card__list li {
    color: var(--text-secondary);
}

[data-theme="dark"] .task-type-card__payout {
    border-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .task-type-card__meta strong {
    color: var(--text-primary);
}

[data-theme="dark"] .task-type-card__amount {
    color: var(--color-success-green);
}

/* ── Evaluation card (Bonuses — Evaluation System; UI Kit) ── */
.evaluation-card.ui-card {
    display: flex;
    flex-direction: column;
    background: var(--bg-primary);
}

.evaluation-card__header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1rem;
}

.evaluation-card__title {
    font-family: var(--font-inter);
    font-size: var(--text-subheading);
    font-weight: var(--font-weight-semibold);
    line-height: var(--leading-subheading);
    letter-spacing: var(--tracking-subheading);
    color: var(--color-accent-purple);
    margin: 0;
    flex: 1;
    min-width: 0;
}

.evaluation-card__title--success {
    color: var(--color-success-green);
}

.evaluation-card__title--accent-blue {
    color: var(--color-accent-blue);
}

.evaluation-card__title--accent-yellow {
    color: var(--color-accent-yellow);
}

.evaluation-card__header .ui-badge {
    flex-shrink: 0;
}

.evaluation-card__list {
    padding: 0;
    margin: 0;
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.evaluation-card__list li {
    font-family: var(--font-inter);
    font-size: var(--text-caption);
    font-weight: var(--font-weight-regular);
    line-height: var(--leading-caption);
    letter-spacing: var(--tracking-caption);
    color: var(--text-secondary);
    padding-left: 1.125rem;
    position: relative;
}

.evaluation-card__list li::before {
    content: "🞂";
    position: absolute;
    left: 0;
    color: var(--text-tertiary);
    font-size: var(--text-caption);
    font-weight: var(--font-weight-regular);
}

[data-theme="dark"] .evaluation-card.ui-card {
    background: var(--bg-secondary);
    border-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .evaluation-card__title {
    color: var(--color-accent-purple);
}

[data-theme="dark"] .evaluation-card__title--success {
    color: var(--color-success-green);
}

[data-theme="dark"] .evaluation-card__title--accent-blue {
    color: var(--color-accent-blue);
}

[data-theme="dark"] .evaluation-card__title--accent-yellow {
    color: var(--color-accent-yellow);
}

[data-theme="dark"] .evaluation-card__list li {
    color: var(--text-secondary);
}

/* ── Bonus example card (Bonuses — Live Examples; UI Kit) ── */
.bonus-example-card {
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
    transition: transform 0.2s ease;
    font-family: var(--font-inter);
}

.bonus-example-card:hover {
    transform: translateY(-2px);
}

.bonus-example-card__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-bottom: 0.625rem;
}

.bonus-example-card__category {
    font-family: var(--font-inter);
    font-size: 10px;
    font-weight: var(--font-weight-semibold);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--color-accent-blue);
}

.bonus-example-card--unpaid .bonus-example-card__category {
    color: var(--text-tertiary);
}

.bonus-example-card--applied .bonus-example-card__category,
.bonus-example-card--impact .bonus-example-card__category {
    color: var(--color-accent-purple);
}

.bonus-example-card__payout {
    font-family: var(--font-inter);
    font-size: var(--text-subheading);
    font-weight: var(--font-weight-semibold);
    line-height: var(--leading-subheading);
    letter-spacing: var(--tracking-subheading);
    color: var(--color-success-green);
    flex-shrink: 0;
}

.bonus-example-card__lead {
    font-family: var(--font-inter);
    font-size: var(--text-caption);
    font-weight: var(--font-weight-regular);
    line-height: var(--leading-caption);
    letter-spacing: var(--tracking-caption);
    color: var(--text-tertiary);
    margin: 0 0 0.75rem;
    max-width: none;
}

.bonus-example-card__list {
    margin: 0;
    padding: 0;
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.bonus-example-card__list li {
    font-family: var(--font-inter);
    font-size: var(--text-caption);
    font-weight: var(--font-weight-regular);
    line-height: var(--leading-caption);
    letter-spacing: var(--tracking-caption);
    color: var(--text-secondary);
    padding-left: 1.125rem;
    position: relative;
}

.bonus-example-card__list li::before {
    content: "🟆";
    position: absolute;
    left: 0;
    color: var(--text-tertiary);
    font-size: var(--text-caption);
    font-weight: var(--font-weight-regular);
}

.bonus-example-card--unpaid {
    background: transparent;
    border-style: dashed;
}

.bonus-example-card--unpaid:hover {
    transform: none;
}

.bonus-example-card--high-impact {
    background: var(--text-primary);
    border-color: var(--text-primary);
}

.bonus-example-card--high-impact .bonus-example-card__category {
    color: var(--color-accent-yellow);
}

.bonus-example-card--high-impact .bonus-example-card__payout {
    color: var(--color-success-green);
}

.bonus-example-card--high-impact .bonus-example-card__lead {
    color: rgba(255, 255, 255, 0.55);
}

.bonus-example-card--high-impact .bonus-example-card__list li {
    color: rgba(255, 255, 255, 0.85);
}

.bonus-example-card--high-impact .bonus-example-card__list li::before {
    color: var(--color-accent-yellow);
}

[data-theme="dark"] .bonus-example-card:not(.bonus-example-card--high-impact):not(.bonus-example-card--unpaid) {
    background: var(--bg-secondary);
    border-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .bonus-example-card--unpaid {
    background: transparent;
    border-color: rgba(255, 255, 255, 0.12);
}

[data-theme="dark"] .bonus-example-card--high-impact {
    background: var(--text-primary);
    border-color: var(--text-primary);
}

[data-theme="dark"] .bonus-example-card--high-impact .bonus-example-card__category {
    color: var(--color-accent-yellow);
}

[data-theme="dark"] .bonus-example-card--high-impact .bonus-example-card__lead {
    color: var(--bg-secondary);
}

[data-theme="dark"] .bonus-example-card--high-impact .bonus-example-card__payout {
    color: var(--color-success-green);
}

[data-theme="dark"] .bonus-example-card--high-impact .bonus-example-card__list li {
    color: rgba(14, 14, 18, 0.92);
}

[data-theme="dark"] .bonus-example-card--high-impact .bonus-example-card__list li::before {
    color: var(--color-accent-yellow);
}

/* ── FAQ accordion (Bonuses — #faq; UI Kit) ── */
.faq {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-8);
    max-width: 720px;
}

.faq__item {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    background: var(--bg-secondary);
    overflow: hidden;
    transition:
        border-color 0.24s cubic-bezier(0.33, 1, 0.68, 1),
        background-color 0.24s ease,
        transform 0.32s cubic-bezier(0.33, 1, 0.68, 1);
}

.faq__item:hover {
    border-color: var(--color-steel-gray);
    background: var(--bg-primary);
    transform: translateY(-2px);
}

.faq__item:active {
    transform: translateY(-1px);
    transition-duration: 0.12s;
}

/* Анимация высоты: внешняя сетка 0fr → 1fr; закрытие — SiteCommon.setupFaqAccordion() в common.js */
.faq__panel-outer {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows 0.42s cubic-bezier(0.33, 1, 0.68, 1);
}

details.faq__item[open] > .faq__panel-outer {
    grid-template-rows: 1fr;
    border-top: 1px solid var(--border-color);
}

/* Текст вопроса — те же токены, что .ds-body (Body, Inter) */
.faq__question {
    list-style: none;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.125rem 2.75rem 1.125rem 1.25rem;
    cursor: pointer;
    font-family: var(--font-inter);
    font-weight: var(--font-weight-regular);
    font-size: var(--text-button-label);
    line-height: var(--leading-button-label);
    letter-spacing: var(--tracking-button-label);
    color: var(--text-primary);
    position: relative;
}

.faq__question::-webkit-details-marker {
    display: none;
}

/* Пиксельная стрелка (маска + цвет токена) */
.faq__question::after {
    content: "";
    position: absolute;
    right: 1rem;
    top: 50%;
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    transform: translateY(-50%);
    transition: transform 0.38s cubic-bezier(0.33, 1, 0.68, 1);
    background-color: var(--text-tertiary);
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 14 14'%3E%3Crect fill='%23fff' x='1' y='1' width='12' height='2'/%3E%3Crect fill='%23fff' x='3' y='3' width='8' height='2'/%3E%3Crect fill='%23fff' x='5' y='5' width='4' height='2'/%3E%3Crect fill='%23fff' x='6' y='7' width='2' height='2'/%3E%3C/svg%3E");
    mask-size: contain;
    mask-repeat: no-repeat;
    mask-position: center;
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 14 14'%3E%3Crect fill='%23fff' x='1' y='1' width='12' height='2'/%3E%3Crect fill='%23fff' x='3' y='3' width='8' height='2'/%3E%3Crect fill='%23fff' x='5' y='5' width='4' height='2'/%3E%3Crect fill='%23fff' x='6' y='7' width='2' height='2'/%3E%3C/svg%3E");
    -webkit-mask-size: contain;
    -webkit-mask-repeat: no-repeat;
    -webkit-mask-position: center;
    image-rendering: pixelated;
    image-rendering: crisp-edges;
}

.faq__item[open] .faq__question::after {
    transform: translateY(-50%) rotate(180deg);
}

.faq__question:focus {
    outline: none;
}

.faq__question:focus-visible {
    outline: 2px solid var(--text-primary);
    outline-offset: -2px;
}

.faq__panel {
    min-height: 0;
    overflow: hidden;
    padding: 0 1.25rem 1.25rem;
}

details.faq__item[open] > .faq__panel-outer > .faq__panel {
    padding-top: 1rem;
}

.faq__panel p {
    margin: 0;
    font-family: var(--font-inter);
    font-size: var(--text-caption);
    font-weight: var(--font-weight-regular);
    line-height: var(--leading-caption);
    letter-spacing: var(--tracking-caption);
    color: var(--text-secondary);
    max-width: none;
}

[data-theme="dark"] .faq__item {
    background: var(--bg-secondary);
    border-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .faq__item:hover {
    border-color: rgba(255, 255, 255, 0.18);
    background: rgba(255, 255, 255, 0.04);
}

[data-theme="dark"] details.faq__item[open] > .faq__panel-outer {
    border-top-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .faq__panel p {
    color: var(--text-secondary);
}

@media (prefers-reduced-motion: reduce) {
    .faq__item,
    .faq__panel-outer,
    .faq__question::after {
        transition-duration: 0.01ms !important;
    }
}

/* ── Shared Header ── */
header {
    position: fixed;
    top: 1rem;
    left: 0;
    width: 100%;
    z-index: 100;
    display: flex;
    justify-content: center;
    pointer-events: none;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 680px;
    height: 52px;
    padding: 0 13px 0 1.25rem;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.58), rgba(255, 255, 255, 0.28));
    backdrop-filter: blur(24px) saturate(190%);
    -webkit-backdrop-filter: blur(24px) saturate(190%);
    border: 1px solid rgba(255, 255, 255, 0.45);
    border-radius: 50.496px;
    box-shadow:
        rgba(0, 0, 0, 0.12) 0px 8px 28px 0px,
        rgba(255, 255, 255, 0.64) 0px 1px 0px 0px inset,
        rgba(255, 255, 255, 0.22) 0px -1px 0px 0px inset;
    pointer-events: all;
    position: relative;
    overflow: hidden;
}

.header-inner::before {
    content: "";
    position: absolute;
    inset: 1px;
    border-radius: inherit;
    background: linear-gradient(120deg, rgba(255,255,255,0.46), rgba(255,255,255,0.08) 44%, rgba(255,255,255,0.28));
    pointer-events: none;
}

.header-inner > * {
    position: relative;
    z-index: 1;
}

/*
 * Жидкое стекло (хедер / моб. таб-бар): градиенты и blur не выносим в токены — исключение для читаемости в dark.
 */
[data-theme="dark"] .header-inner {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.11), rgba(255, 255, 255, 0.04));
    border-color: rgba(255, 255, 255, 0.22);
    box-shadow:
        rgba(0, 0, 0, 0.45) 0px 12px 32px 0px,
        rgba(255, 255, 255, 0.14) 0px 1px 0px 0px inset,
        rgba(0, 0, 0, 0.35) 0px -1px 0px 0px inset;
    backdrop-filter: blur(28px) saturate(165%);
    -webkit-backdrop-filter: blur(28px) saturate(165%);
}

[data-theme="dark"] .header-inner::before {
    background: linear-gradient(
        125deg,
        rgba(255, 255, 255, 0.12),
        rgba(255, 255, 255, 0.02) 45%,
        rgba(255, 255, 255, 0.06)
    );
}

.header-left {
    display: flex;
    align-items: center;
    gap: 0.625rem;
}

.logo-horizontal { height: 20px; width: auto; display: block; transition: fill 0.25s ease, filter 0.25s ease; }
[data-theme="dark"] .logo-horizontal path[fill="black"],
[data-theme="dark"] .logo-horizontal path[fill="#161719"] { fill: #f0f0ec; }
[data-theme="dark"] a.logo img.logo-horizontal {
    filter: invert(1) brightness(1.06);
}

.header-badge { height: 18px; width: auto; display: block; }

.header-nav { display: flex; align-items: center; gap: 0.125rem; }

/* Нижнее таб-меню: на десктопе скрыто; визуал капсулы — общий (преследует UI Kit на любом viewport) */
.header-tab-bar {
    display: none;
}

.header-tab-bar-inner {
    display: flex;
    align-items: stretch;
    width: max-content;
    max-width: 100%;
    min-height: var(--nav-mobile-tab-inner-min-height);
    padding: 4px;
    pointer-events: all;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.58), rgba(255, 255, 255, 0.28));
    backdrop-filter: blur(var(--nav-mobile-tab-backdrop-blur));
    -webkit-backdrop-filter: blur(var(--nav-mobile-tab-backdrop-blur));
    border: 1px solid rgba(255, 255, 255, 0.45);
    border-radius: var(--radius-full);
    box-shadow:
        rgba(0, 0, 0, 0.12) 0px 8px 28px 0px,
        rgba(255, 255, 255, 0.64) 0px 1px 0px 0px inset,
        rgba(255, 255, 255, 0.22) 0px -1px 0px 0px inset;
    position: relative;
    overflow: hidden;
}

.header-tab-bar-inner::before {
    content: "";
    position: absolute;
    inset: 1px;
    border-radius: inherit;
    background: linear-gradient(120deg, rgba(255,255,255,0.46), rgba(255,255,255,0.08) 44%, rgba(255,255,255,0.28));
    pointer-events: none;
    z-index: 0;
}

.header-tab-bar-inner .header-nav-link {
    position: relative;
    z-index: 1;
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    white-space: nowrap;
    padding: 0.5rem 1.25rem;
    border-radius: 999px;
}

[data-theme="dark"] .header-tab-bar-inner {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.11), rgba(255, 255, 255, 0.04));
    border-color: rgba(255, 255, 255, 0.22);
    box-shadow:
        rgba(0, 0, 0, 0.45) 0px 12px 32px 0px,
        rgba(255, 255, 255, 0.14) 0px 1px 0px 0px inset,
        rgba(0, 0, 0, 0.35) 0px -1px 0px 0px inset;
    backdrop-filter: blur(28px) saturate(165%);
    -webkit-backdrop-filter: blur(28px) saturate(165%);
}

[data-theme="dark"] .header-tab-bar-inner::before {
    background: linear-gradient(
        125deg,
        rgba(255, 255, 255, 0.12),
        rgba(255, 255, 255, 0.02) 45%,
        rgba(255, 255, 255, 0.06)
    );
}

.header-nav-link {
    font-family: var(--font-inter);
    font-size: var(--text-caption);
    font-weight: var(--font-weight-regular);
    line-height: var(--leading-caption);
    letter-spacing: var(--tracking-button-label);
    color: var(--text-secondary);
    text-decoration: none;
    padding: 5px 12px;
    border-radius: 8px;
    transition: background 0.15s ease, color 0.15s ease;
}
.header-nav-link:hover {
    background: rgba(0, 0, 0, 0.05);
    color: var(--text-primary);
}
.header-nav-link.active {
    background: rgba(0, 0, 0, 0.06);
    color: var(--text-primary);
}
[data-theme="dark"] .header-nav-link:hover,
[data-theme="dark"] .header-nav-link.active {
    background: rgba(255,255,255,0.06);
    color: var(--text-primary);
}

.theme-toggle {
    background: none; border: none; cursor: pointer; padding: 0; display: flex; align-items: center;
    border-radius: 100px; margin-left: 4px;
}
.theme-toggle:focus-visible { outline: 2px solid var(--text-primary); outline-offset: 3px; }
.toggle-track {
    position: relative; display: flex; align-items: center; width: 48px; height: 26px;
    background: var(--border-subtle); border: 1px solid var(--border-color); border-radius: 100px; transition: background 0.3s ease;
}
.toggle-thumb {
    position: absolute;
    left: 3px;
    width: 20px;
    height: 20px;
    background: var(--bg-primary);
    border-radius: 50%;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1;
}
/* Тёмная тема: дорожка как приглушённый контрол, ползунок — светлый (не светлая «плашка» из --bg-inverse) */
[data-theme="dark"] .toggle-track {
    background: var(--bg-tertiary);
    border-color: rgba(255, 255, 255, 0.14);
}
[data-theme="dark"] .toggle-thumb {
    transform: translateX(22px);
    background: var(--bg-inverse);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.35);
}
.toggle-icon {
    position: absolute; display: flex; align-items: center; justify-content: center; width: 12px; height: 12px;
    color: var(--text-secondary); z-index: 2;
}
.toggle-sun { left: 6px; opacity: 1; }
.toggle-moon { right: 6px; opacity: 0.4; }
/* Солнце — на тёмной дорожке; не уводить в --text-tertiary + низкую opacity */
[data-theme="dark"] .toggle-sun {
    opacity: 0.7;
    color: var(--text-secondary);
}
/*
 * Луна рисуется поверх светлого ползунка (--bg-inverse): тот же цвет, что и --text-primary,
 * делает штрих невидимым. Контраст через «чернильный» --text-inverse на светлом круге.
 */
[data-theme="dark"] .toggle-moon {
    opacity: 1;
    color: var(--text-inverse);
}

/* ── Container ── */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ── Shared Mobile Nav ── */
@media (max-width: 768px) {
    .container {
        padding-left: var(--page-gutter-mobile);
        padding-right: var(--page-gutter-mobile);
    }

    /* Хедер в потоке документа (не перекрывает контент) */
    header {
        position: relative;
        top: auto;
        left: auto;
        padding-top: max(0.75rem, env(safe-area-inset-top, 0px));
        padding-left: var(--page-gutter-mobile);
        padding-right: var(--page-gutter-mobile);
    }

    /* Отступ снизу под фиксированное таб-меню */
    body {
        padding-bottom: calc(5.25rem + env(safe-area-inset-bottom, 0px));
    }

    .header-inner {
        width: 100%;
        max-width: none;
        height: auto;
        min-height: 48px;
        padding: 0.5rem 0;
        background: transparent;
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
        border: none;
        border-radius: 0;
        box-shadow: none;
        overflow: visible;
    }

    .header-inner::before {
        display: none;
    }

    [data-theme="dark"] .header-inner {
        background: transparent;
        border: none;
        box-shadow: none;
    }

    .header-nav--top {
        display: none;
    }

    .header-tab-bar {
        display: flex;
        justify-content: center;
        position: fixed;
        bottom: max(0.75rem, env(safe-area-inset-bottom, 0px));
        left: 0;
        right: 0;
        z-index: 100;
        pointer-events: none;
        padding: 0 var(--page-gutter-mobile);
        box-sizing: border-box;
    }
}

@media (max-width: 640px) {
    .ui-card {
        padding: 1.25rem; /* Smaller padding on mobile */
    }
}