:root {
    --page-background: #f4f7fb;
    --surface-primary: #ffffff;
    --surface-secondary: #f8fafc;
    --surface-accent: #eef4ff;
    --surface-success: #eefaf2;
    --surface-warning: #fff8e8;
    --surface-danger: #fff1f0;
    --border-soft: #d9e2ec;
    --border-strong: #c4d1df;
    --text-primary: #172232;
    --text-secondary: #5b6b7f;
    --text-muted: #74839a;
    --brand-700: #1f3a5b;
    --brand-600: #28507c;
    --brand-500: #2f6fb2;
    --accent-500: #8f6a2a;
    --success-600: #20724d;
    --danger-600: #bb3f3f;
    --shadow-soft: 0 14px 34px rgba(20, 38, 63, 0.08);
    --shadow-subtle: 0 6px 18px rgba(20, 38, 63, 0.06);
    --radius-lg: 18px;
    --radius-md: 12px;
    --radius-sm: 8px;
    --content-width: 1120px;
    --transition-fast: 0.18s ease;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background:
        radial-gradient(circle at top, rgba(47, 111, 178, 0.1), transparent 34%),
        linear-gradient(180deg, #f8fbff 0%, var(--page-background) 38%, #eef3f8 100%);
    color: var(--text-primary);
    font-family: "Segoe UI", Tahoma, Arial, sans-serif;
    line-height: 1.6;
}

a {
    color: var(--brand-600);
}

img,
video {
    max-width: 100%;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    backdrop-filter: blur(14px);
    background:
        linear-gradient(135deg, rgba(21, 39, 61, 0.96), rgba(33, 56, 86, 0.92)),
        rgba(24, 42, 66, 0.9);
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow: 0 10px 24px rgba(17, 30, 48, 0.12);
}

.site-header__inner {
    max-width: calc(var(--content-width) + 48px);
    margin: 0 auto;
    padding: 14px 24px 16px;
    display: grid;
    gap: 14px;
}

.site-header__top {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: space-between;
    gap: 14px 20px;
}

.site-brand {
    display: inline-grid;
    gap: 2px;
    color: #ffffff;
    text-decoration: none;
    align-self: center;
}

.site-brand__title {
    font-size: 1.08rem;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.site-brand__subtitle {
    color: rgba(219, 231, 245, 0.78);
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.site-nav {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    justify-content: center;
    width: 100%;
    padding: 0;
    border-radius: 0;
    background: transparent;
    border: 0;
}

.site-nav__link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.95);
    text-decoration: none;
    padding: 3px 14px;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.08);
    font-size: 0.95rem;
    font-weight: 600;
    white-space: nowrap;
    transition:
        background-color var(--transition-fast),
        border-color var(--transition-fast),
        color var(--transition-fast),
        transform var(--transition-fast);
}

.site-nav__link:hover,
.site-nav__link:focus-visible {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.22);
    transform: translateY(-1px);
}

.site-nav__link.is-active {
    background: rgba(255, 255, 255, 0.92);
    color: var(--brand-700);
    border-color: rgba(255, 255, 255, 0.92);
    box-shadow: 0 10px 18px rgba(16, 31, 50, 0.16);
}

.site-nav__label--short {
    display: none;
}

.site-header__account {
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
    color: rgba(255, 255, 255, 0.88);
    font-size: 0.95rem;
    margin-left: auto;
}

.site-header__identity {
    display: grid;
    gap: 1px;
    text-align: right;
}

.site-header__account-label {
    color: rgba(219, 231, 245, 0.74);
    font-size: 0.76rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.site-header__account-name {
    color: #ffffff;
    font-weight: 700;
    line-height: 1.2;
}

.site-header__form {
    margin: 0;
}

main {
    max-width: var(--content-width);
    margin: 0 auto;
    padding: 28px 14px 48px;
}

.page-stack {
    display: grid;
    gap: 20px;
}

.page-hero {
    position: relative;
    overflow: hidden;
    padding: 28px 30px;
    border-radius: 22px;
    background:
        linear-gradient(135deg, rgba(255, 255, 255, 0.98), rgba(241, 247, 255, 0.98)),
        var(--surface-primary);
    border: 1px solid rgba(36, 72, 114, 0.1);
    box-shadow: var(--shadow-soft);
}

.page-hero::after {
    content: "";
    position: absolute;
    top: -40px;
    right: -30px;
    width: 180px;
    height: 180px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(47, 111, 178, 0.16), transparent 70%);
    pointer-events: none;
}

.page-hero__content {
    position: relative;
    z-index: 1;
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: space-between;
    gap: 18px;
}

.page-hero h1,
.card h1 {
    margin: 0 0 10px;
    font-size: clamp(1.85rem, 2.4vw, 2.3rem);
    line-height: 1.2;
    color: var(--brand-700);
}

.page-hero p {
    margin: 0;
    max-width: 760px;
    color: var(--text-secondary);
    font-size: 1.02rem;
}

.page-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.section-heading {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 10px 16px;
    margin-bottom: 14px;
}

.section-heading h2,
.card h2 {
    margin: 0;
    font-size: 1.28rem;
    line-height: 1.3;
    color: var(--brand-700);
}

.section-heading p {
    margin: 4px 0 0;
    color: var(--text-secondary);
}

.card {
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid rgba(29, 56, 91, 0.08);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-subtle);
    margin-bottom: 18px;
}

.card:last-child {
    margin-bottom: 0;
}

.card--flat {
    box-shadow: none;
}

.grid {
    display: grid;
    gap: 18px;
}

.grid--cards {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid--stats {
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.info-list {
    display: grid;
    gap: 14px;
}

.info-list__item {
    padding: 16px 18px;
    background: var(--surface-secondary);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-md);
}

.info-list__label {
    display: block;
    margin-bottom: 6px;
    color: var(--text-muted);
    font-size: 0.88rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.info-list__value {
    color: var(--text-primary);
    font-size: 1.02rem;
    font-weight: 600;
}

.summary-card,
.resource-card {
    display: grid;
    gap: 14px;
    height: 100%;
}

.summary-card__header,
.resource-card__header {
    display: grid;
    gap: 8px;
}

.summary-card__title,
.resource-card__title {
    margin: 0;
    font-size: 1.08rem;
    line-height: 1.35;
}

.summary-card__meta,
.resource-card__meta,
.resource-card__body,
.text-flow {
    color: var(--text-secondary);
}

.resource-card__body {
    margin: 0;
}

.summary-card__actions,
.resource-card__actions,
.table-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.summary-card__actions form,
.resource-card__actions form,
.page-actions form,
.table-actions form {
    margin: 0;
}

.badge-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

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

.eyebrow {
    display: inline-block;
    margin-bottom: 8px;
    color: var(--brand-600);
    font-size: 0.88rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.badge,
.status-pill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    min-height: 30px;
    padding: 5px 12px;
    border-radius: 999px;
    font-size: 0.89rem;
    font-weight: 700;
    line-height: 1.2;
}

.badge {
    background: var(--surface-accent);
    color: var(--brand-600);
    border: 1px solid rgba(47, 111, 178, 0.12);
}

.status-pill {
    background: #eef3f8;
    color: var(--text-secondary);
    border: 1px solid rgba(116, 131, 154, 0.16);
}

.status-pill--success {
    background: var(--surface-success);
    color: var(--success-600);
    border-color: rgba(32, 114, 77, 0.18);
}

.status-pill--warning {
    background: var(--surface-warning);
    color: var(--accent-500);
    border-color: rgba(143, 106, 42, 0.18);
}

.status-pill--danger {
    background: var(--surface-danger);
    color: var(--danger-600);
    border-color: rgba(187, 63, 63, 0.18);
}

.status-pill--brand {
    background: rgba(47, 111, 178, 0.12);
    color: var(--brand-600);
    border-color: rgba(47, 111, 178, 0.15);
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    /* min-height: 42px; */
    padding: 2px 18px;
    border: 1px solid transparent;
    border-radius: 4px;
    background: linear-gradient(135deg, var(--brand-500), #23568e);
    color: #ffffff;
    text-decoration: none;
    cursor: pointer;
    font-family: inherit;
    font-size: 0.96rem;
    font-weight: 700;
    transition:
        transform var(--transition-fast),
        box-shadow var(--transition-fast),
        background-color var(--transition-fast);
    box-shadow: 0 10px 20px rgba(35, 86, 142, 0.18);
}

.button:hover,
.button:focus-visible {
    transform: translateY(-1px);
    box-shadow: 0 14px 24px rgba(35, 86, 142, 0.22);
}

.button-submit {
    font-family: inherit;
}

.button-secondary {
    background: linear-gradient(135deg, #eef3f8, #dce7f3);
    color: var(--brand-700);
    border-color: rgba(36, 72, 114, 0.1);
    box-shadow: none;
}

.button-ghost {
    min-height: 38px;
    padding: 8px 14px;
    background: rgba(255, 255, 255, 0.12);
    color: #ffffff;
    border-color: rgba(255, 255, 255, 0.18);
    box-shadow: none;
}

.button-ghost:hover,
.button-ghost:focus-visible {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.26);
    box-shadow: none;
}

.button-success {
    background: linear-gradient(135deg, #2f9364, #20724d);
}

.button-danger {
    background: linear-gradient(135deg, #d46652, #bb3f3f);
}

.button[disabled] {
    background: #b8c6d6;
    border-color: #b8c6d6;
    color: #f5f7fa;
    box-shadow: none;
    cursor: not-allowed;
    transform: none;
}

.table-card {
    overflow: hidden;
}

.table-scroll {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 720px;
}

.data-table th,
.data-table td {
    padding: 14px 12px;
    vertical-align: middle;
}

.data-table thead th {
    color: var(--text-secondary);
    font-size: 0.88rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    text-align: left;
    text-transform: uppercase;
    background: var(--surface-secondary);
    border-bottom: 1px solid var(--border-strong);
}

.data-table tbody tr {
    border-bottom: 1px solid #ebf0f5;
}

.data-table tbody tr:hover {
    background: rgba(238, 244, 255, 0.45);
}

.table-primary {
    font-weight: 700;
    color: var(--text-primary);
}

.table-secondary {
    display: block;
    margin-top: 4px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.table-score {
    font-weight: 700;
    color: var(--brand-700);
}

.empty-state {
    padding: 28px;
    border: 1px dashed var(--border-strong);
    border-radius: var(--radius-lg);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.88), rgba(248, 250, 252, 0.98));
    text-align: center;
}

.empty-state p {
    margin: 0;
    color: var(--text-secondary);
}

.split-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 18px;
}

.split-meta__item {
    color: var(--text-secondary);
}

.option-list,
.image-list {
    padding-left: 20px;
}

.question-meta {
    margin-bottom: 12px;
}

.option-stack {
    display: flex;
    flex-direction: column;
    gap: 0;
    margin-top: 8px;
}

.option-item {
    display: block;
    background: transparent;
    border: 0;
    border-bottom: 1px dotted #b9c4d1;
    border-radius: 0;
    padding: 14px 0;
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.option-item input {
    margin-right: 10px;
}

.option-correct {
    color: #2f8f2f;
}

.option-incorrect {
    color: #d94841;
}

.option-correct.option-selected,
.option-correct.option-reveal {
    background: #edf8e8;
}

.option-incorrect.option-selected {
    background: #fff1f0;
}

.option-feedback {
    display: inline-block;
    margin-left: 10px;
    font-size: 0.9rem;
    color: #4c5d73;
}

.result-correct {
    background: #ebfbee;
    color: #2b8a3e;
}

.result-incorrect {
    background: #fff5f5;
    color: #c92a2a;
}

.practice-progress {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    align-items: center;
}

.practice-progress p {
    margin: 0;
}

.practice-question-panel {
    display: none;
}

.practice-question-panel.is-active {
    display: block;
}

.question-counter {
    font-size: 2rem;
    margin: 0 0 14px;
    font-weight: 500;
}

.question-counter .question-sequence {
    color: #d94841;
}

.question-stem {
    background: #f5f7fa;
    border: 1px solid #d7dee8;
    border-radius: 10px;
    padding: 16px 18px;
    margin: 0 0 20px;
    line-height: 1.65;
}

.question-languages p {
    margin: 0 0 12px;
}

.question-runner-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 20px;
}

.answer-panel {
    display: none;
    margin-top: 18px;
}

.answer-panel.is-open {
    display: block;
}

.answer-status {
    border-radius: 10px;
    padding: 14px 16px;
    margin-bottom: 14px;
    font-weight: 700;
}

.answer-status.is-correct {
    background: #ebf7e8;
    color: #2f8f2f;
}

.answer-status.is-wrong {
    background: #fff1ef;
    color: #d94841;
}

.explanation-box {
    background: #fff8dd;
    border: 1px solid #ece0a8;
    border-radius: 10px;
    padding: 16px 18px;
}

.explanation-box p {
    margin: 0 0 10px;
}

.explanation-box p:last-child {
    margin-bottom: 0;
}

.helper-text {
    margin-top: 12px;
    color: var(--text-secondary);
}

.compact-meta {
    margin-bottom: 12px;
}

.compact-meta p {
    margin: 0 0 8px;
}

.media-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-top: 12px;
}

.question-media-figure {
    margin: 0;
    background: #f7f9fc;
    border: 1px solid #d7dee8;
    border-radius: 12px;
    overflow: hidden;
}

.question-media-figure.is-hidden {
    display: none;
}

.question-media-image {
    display: block;
    width: 100%;
    max-height: 320px;
    object-fit: contain;
    background: #fff;
}

.question-media-meta {
    padding: 12px 14px 14px;
}

.question-media-meta p {
    margin: 0 0 6px;
}

.question-media-meta p:last-child {
    margin-bottom: 0;
}

.question-media-code {
    font-size: 0.88rem;
    color: var(--text-secondary);
}

.bilingual-block {
    display: grid;
    gap: 14px;
}

.bilingual-block__entry {
    padding: 14px 16px;
    background: rgba(255, 255, 255, 0.54);
    border: 1px solid rgba(116, 131, 154, 0.14);
    border-radius: var(--radius-md);
}

.bilingual-block__label {
    display: inline-block;
    margin-bottom: 8px;
    color: var(--brand-700);
    font-size: 0.92rem;
    font-weight: 700;
}

.text-ar,
[lang="ar"],
[dir="rtl"] {
    direction: rtl;
    text-align: right;
    font-family: "Tahoma", "Segoe UI", Arial, sans-serif;
    font-size: 1.05rem;
    line-height: 1.85;
}

.text-en,
[lang="en"] {
    direction: ltr;
    text-align: left;
}

.text-ar strong,
[lang="ar"] strong,
[dir="rtl"] strong {
    letter-spacing: normal;
}

.bilingual-block__entry p:last-child {
    margin-bottom: 0;
}

@media (max-width: 860px) {
    .site-header__inner,
    .page-hero__content {
        align-items: flex-start;
    }

    .site-header__top {
        flex-direction: column;
    }

    .site-nav {
        width: 100%;
        justify-content: flex-start;
    }

    .site-header__account {
        flex-wrap: wrap;
        justify-content: flex-start;
        margin-left: 0;
    }

    .site-header__identity {
        text-align: left;
    }

    .card,
    .page-hero {
        padding: 20px;
    }
}

@media (max-width: 980px) {
    .site-nav__label--short {
        display: inline;
    }

    .site-nav__link .site-nav__label:not(.site-nav__label--short) {
        display: none;
    }
}

@media (max-width: 640px) {
    .site-header {
        position: static;
    }

    main {
        padding: 20px 12px 36px;
    }

    .site-header__inner {
        padding: 12px 14px 14px;
        gap: 12px;
    }

    .site-header__top {
        gap: 12px;
    }

    .site-nav {
        gap: 8px;
    }

    .site-nav__label--short {
        display: none;
    }

    .site-nav__link .site-nav__label:not(.site-nav__label--short) {
        display: inline;
    }

    .page-hero h1,
    .card h1 {
        font-size: 1.7rem;
    }

    .button,
    .site-nav__link {
        width: 100%;
    }

    .site-header__account {
        width: 100%;
    }

    .site-header__form,
    .site-header__form .button {
        width: 100%;
    }

    .page-actions,
    .summary-card__actions,
    .resource-card__actions,
    .table-actions,
    .question-runner-actions {
        flex-direction: column;
    }

    .data-table {
        min-width: 640px;
    }
}