:root {
    --bg-start: #071126;
    --bg-end: #01040a;
    --panel: rgba(9, 23, 48, 0.8);
    --panel-soft: rgba(17, 32, 63, 0.7);
    --panel-border: rgba(113, 180, 255, 0.2);
    --primary: #3d8bff;
    --primary-strong: #1d5fe2;
    --accent: #f6b43c;
    --success: #2ac27b;
    --danger: #ef5f70;
    --text: #f5f8ff;
    --muted: #a9b8d4;
    --shadow: 0 18px 48px rgba(0, 0, 0, 0.35);
    --radius-xl: 28px;
    --radius-lg: 20px;
    --radius-md: 14px;
    --radius-sm: 10px;
    --font-base: "Tajawal", "Segoe UI", "Tahoma", sans-serif;
}

* {
    box-sizing: border-box;
}

[hidden] {
    display: none !important;
}

html,
body {
    min-height: 100%;
}

body {
    margin: 0;
    color: var(--text);
    font-family: var(--font-base);
    overflow-x: hidden;
    background:
        radial-gradient(circle at top left, rgba(61, 139, 255, 0.3), transparent 28%),
        radial-gradient(circle at top right, rgba(246, 180, 60, 0.12), transparent 24%),
        linear-gradient(160deg, var(--bg-start), var(--bg-end));
}

body.settings-open {
    overflow: hidden;
}

button,
select {
    font: inherit;
}

button {
    border: none;
}

.app-shell {
    min-height: 100vh;
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(230px, 300px);
    grid-template-areas: "main prize";
    gap: 24px;
    width: min(100%, 1500px);
    margin: 0 auto;
    padding: clamp(16px, 2.5vw, 28px);
    padding-top: clamp(72px, 8vw, 88px);
    direction: ltr;
}

.sidebar,
.main-stage,
.prize-rail {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.main-stage,
.prize-rail {
    direction: rtl;
}

[data-dir="ltr"] .main-stage,
[data-dir="ltr"] .prize-rail {
    direction: ltr;
}

[data-dir="rtl"] .main-stage,
[data-dir="rtl"] .prize-rail {
    direction: rtl;
}

.settings-toggle-btn {
    position: fixed;
    top: max(16px, env(safe-area-inset-top));
    right: max(16px, env(safe-area-inset-right));
    z-index: 50;
    width: 54px;
    height: 54px;
    display: inline-grid;
    place-items: center;
    color: var(--text);
    font-size: 1.28rem;
    cursor: pointer;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--primary), var(--primary-strong));
    border: 1px solid rgba(255, 255, 255, 0.18);
    box-shadow: 0 16px 32px rgba(0, 0, 0, 0.28);
    transition: transform 160ms ease, box-shadow 160ms ease, opacity 160ms ease;
}

.settings-toggle-btn:hover,
.settings-toggle-btn:focus-visible {
    transform: translateY(-2px);
    box-shadow: 0 20px 36px rgba(0, 0, 0, 0.34);
}

body.settings-open .settings-toggle-btn {
    opacity: 0;
    pointer-events: none;
}

.sidebar {
    position: fixed;
    inset: 0 0 0 auto;
    z-index: 40;
    width: min(390px, 100vw);
    max-width: 100vw;
    padding: 20px;
    overflow-y: auto;
    visibility: hidden;
    transform: translateX(105%);
    background:
        radial-gradient(circle at top right, rgba(61, 139, 255, 0.18), transparent 36%),
        linear-gradient(180deg, rgba(7, 17, 38, 0.98), rgba(2, 7, 17, 0.98));
    border-left: 1px solid var(--panel-border);
    box-shadow: -24px 0 60px rgba(0, 0, 0, 0.42);
    transition: transform 220ms ease, visibility 220ms ease;
}

.sidebar.is-open {
    visibility: visible;
    transform: translateX(0);
}

.settings-backdrop {
    position: fixed;
    inset: 0;
    z-index: 35;
    cursor: pointer;
    background: rgba(2, 8, 20, 0.58);
    backdrop-filter: blur(4px);
}

.drawer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 2px 2px 0;
}

.drawer-header .eyebrow {
    margin: 0;
}

.drawer-close-btn {
    width: 42px;
    height: 42px;
    color: var(--text);
    font-size: 1.55rem;
    line-height: 1;
    cursor: pointer;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.drawer-close-btn:hover,
.drawer-close-btn:focus-visible {
    transform: translateY(-1px);
    background: rgba(255, 255, 255, 0.12);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.22);
}

.brand-block,
.panel,
.hero-card,
.status-card,
.question-card {
    backdrop-filter: blur(20px);
    background: var(--panel);
    border: 1px solid var(--panel-border);
    box-shadow: var(--shadow);
}

.brand-block,
.panel {
    border-radius: var(--radius-xl);
    padding: 22px;
}

.hero-card,
.question-card {
    border-radius: 32px;
}

.brand-block {
    position: relative;
    overflow: hidden;
}

.brand-block::after,
.hero-card::after,
.question-card::after {
    content: "";
    position: absolute;
    inset: auto auto -40px -40px;
    width: 160px;
    height: 160px;
    border-radius: 999px;
    background: radial-gradient(circle, rgba(61, 139, 255, 0.25), transparent 68%);
    pointer-events: none;
}

.eyebrow {
    margin: 0 0 10px;
    color: var(--accent);
    font-size: 0.86rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

#app-title,
#menu-title,
#question-text {
    margin: 0;
    line-height: 1.2;
}

#app-title {
    font-size: clamp(2rem, 4vw, 2.9rem);
}

#menu-title {
    font-size: clamp(1.7rem, 3.2vw, 2.5rem);
}

.support-copy,
.note,
.question-meta,
.question-explainer,
.label {
    color: var(--muted);
}

.support-copy,
.note {
    margin: 10px 0 0;
    line-height: 1.7;
}

.panel-heading,
.question-header,
.status-strip,
.jokers-row,
.hero-card {
    display: flex;
    gap: 14px;
}

.panel-heading,
.question-header {
    align-items: center;
    justify-content: space-between;
}

.field {
    display: grid;
    gap: 8px;
    margin-bottom: 14px;
}

.field label {
    color: var(--muted);
    font-size: 0.94rem;
}

select,
.primary-btn,
.secondary-btn,
.lesson-btn,
.answer-btn,
.joker-btn {
    border-radius: var(--radius-md);
    transition: transform 160ms ease, box-shadow 160ms ease, opacity 160ms ease, background 160ms ease;
}

select {
    width: 100%;
    padding: 12px 14px;
    color: var(--text);
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.primary-btn,
.secondary-btn,
.lesson-btn,
.answer-btn,
.joker-btn {
    cursor: pointer;
}

.primary-btn,
.lesson-btn,
.answer-btn {
    color: var(--text);
    background: linear-gradient(135deg, var(--primary), var(--primary-strong));
    box-shadow: 0 12px 24px rgba(29, 95, 226, 0.28);
}

.secondary-btn,
.joker-btn {
    color: var(--text);
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.primary-btn:hover,
.secondary-btn:hover,
.lesson-btn:hover,
.answer-btn:hover,
.joker-btn:hover,
select:hover {
    transform: translateY(-2px);
    box-shadow: 0 16px 28px rgba(0, 0, 0, 0.22);
}

.primary-btn,
.secondary-btn {
    min-height: 46px;
    padding: 12px 18px;
}

.inline-btn {
    width: 100%;
}

.screen {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.hero-card {
    position: relative;
    justify-content: space-between;
    align-items: flex-end;
    padding: 26px 28px;
    overflow: hidden;
    overflow-wrap: anywhere;
}

.hero-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
}

.lesson-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 18px;
}

.lesson-btn {
    text-align: start;
    padding: 22px;
    min-height: 180px;
    display: grid;
    gap: 14px;
    align-content: space-between;
    overflow-wrap: anywhere;
}

.lesson-btn small {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.55;
}

.chip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 30px;
    padding: 6px 12px;
    border-radius: 999px;
    background: rgba(246, 180, 60, 0.12);
    color: var(--accent);
    font-size: 0.85rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    margin-top: 12px;
}

.stat-card {
    padding: 14px;
    border-radius: var(--radius-md);
    background: var(--panel-soft);
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.stat-card strong {
    display: block;
    margin-top: 6px;
    font-size: 1.2rem;
}

.gains-list {
    list-style: none;
    margin: 14px 0 0;
    padding: 0;
    display: grid;
    gap: 8px;
}

.gains-list li {
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    color: var(--muted);
    background: rgba(255, 255, 255, 0.04);
}

.gains-list li.active {
    color: var(--text);
    background: linear-gradient(135deg, rgba(246, 180, 60, 0.2), rgba(61, 139, 255, 0.28));
    border: 1px solid rgba(246, 180, 60, 0.35);
}

.prize-rail {
    grid-area: prize;
    min-width: 0;
    position: sticky;
    top: 76px;
    align-self: start;
    max-height: calc(100vh - 104px);
    overflow: auto;
}

.prize-rail .gains-panel {
    position: relative;
    overflow: hidden;
}

.session-chip {
    width: 100%;
    justify-content: center;
    margin-top: 12px;
}

.session-chip:empty {
    display: none;
}

.prize-emoji {
    display: inline-grid;
    width: 44px;
    height: 44px;
    place-items: center;
    font-size: 1.8rem;
    border-radius: 999px;
    background: radial-gradient(circle, rgba(246, 180, 60, 0.3), rgba(61, 139, 255, 0.12));
    filter: drop-shadow(0 10px 18px rgba(246, 180, 60, 0.24));
    transform-origin: center;
}

.prize-emoji.is-zooming {
    animation: prize-pop 620ms cubic-bezier(0.17, 0.9, 0.26, 1.35);
}

.main-stage {
    grid-area: main;
    min-width: 0;
    width: 100%;
    margin: 0;
}

@keyframes prize-pop {
    0% {
        transform: scale(1) rotate(0deg);
    }

    38% {
        transform: scale(1.55) rotate(-8deg);
    }

    70% {
        transform: scale(0.92) rotate(5deg);
    }

    100% {
        transform: scale(1) rotate(0deg);
    }
}

.status-strip {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.status-card {
    padding: 18px 20px;
    border-radius: var(--radius-lg);
    display: grid;
    gap: 10px;
}

.status-card strong {
    font-size: clamp(1.2rem, 2vw, 1.5rem);
}

.timer-card strong {
    color: var(--accent);
}

.timer-bar {
    height: 10px;
    border-radius: 999px;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.08);
}

#timer-bar-fill {
    display: block;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, var(--accent), #ffde78);
    transform-origin: center left;
}

.session-banner {
    padding: 14px 18px;
    border-radius: var(--radius-md);
    border: 1px solid rgba(113, 180, 255, 0.24);
    background: rgba(33, 77, 146, 0.24);
    color: var(--text);
}

.session-banner.warning {
    border-color: rgba(246, 180, 60, 0.32);
    background: rgba(246, 180, 60, 0.12);
}

.jokers-row {
    flex-wrap: wrap;
}

.joker-btn {
    min-height: 54px;
    min-width: 114px;
    padding: 12px 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.joker-btn.used,
.joker-btn[disabled] {
    opacity: 0.45;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.question-card {
    position: relative;
    padding: 28px;
    overflow: hidden;
}

.question-meta {
    margin: 0;
}

#question-text {
    margin-top: 14px;
    font-size: clamp(1.6rem, 3vw, 2.3rem);
}

.question-explainer {
    margin-top: 12px;
    padding: 12px 14px;
    line-height: 1.7;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.answers-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    margin-top: 26px;
}

.answer-btn {
    min-height: 92px;
    padding: 18px 20px;
    text-align: start;
    display: grid;
    gap: 10px;
    overflow-wrap: anywhere;
}

.answer-btn .answer-key {
    display: inline-flex;
    width: 2rem;
    height: 2rem;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.16);
}

.answer-btn.is-hidden {
    visibility: hidden;
    pointer-events: none;
}

.answer-btn.is-correct {
    background: linear-gradient(135deg, #34c488, #23895f);
}

.answer-btn.is-wrong {
    background: linear-gradient(135deg, #ff6f80, #ba3348);
}

.answer-btn[disabled] {
    cursor: not-allowed;
    opacity: 0.84;
    transform: none;
}

.overlay {
    position: fixed;
    inset: 0;
    display: grid;
    place-items: center;
    padding: 24px;
    background: rgba(2, 8, 20, 0.78);
    backdrop-filter: blur(12px);
    z-index: 30;
}

.overlay[hidden] {
    display: none;
}

.overlay-card {
    width: min(100%, 560px);
    padding: 28px;
    border-radius: 30px;
    background: linear-gradient(180deg, rgba(8, 20, 40, 0.96), rgba(6, 13, 28, 0.96));
    border: 1px solid rgba(113, 180, 255, 0.2);
    box-shadow: var(--shadow);
    text-align: center;
}

.overlay-icon {
    margin: 0 0 12px;
    font-size: 3rem;
}

.overlay-actions {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 24px;
}

[data-dir="ltr"] .lesson-btn,
[data-dir="ltr"] .answer-btn {
    text-align: left;
}

[data-dir="rtl"] .lesson-btn,
[data-dir="rtl"] .answer-btn {
    text-align: right;
}

[data-dir="rtl"] #timer-bar-fill {
    transform-origin: center right;
}

@media (max-width: 1100px) {
    .status-strip {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (max-width: 900px) {
    .app-shell {
        grid-template-columns: minmax(0, 1fr) minmax(104px, 140px);
        grid-template-areas: "main prize";
        gap: 12px;
    }

    .prize-rail {
        position: sticky;
        top: 76px;
        max-height: calc(100vh - 92px);
        overflow: auto;
    }

    .gains-list {
        grid-template-columns: 1fr;
        gap: 6px;
    }

    .gains-list li {
        padding: 8px 10px;
        font-size: 0.86rem;
    }
}

@media (max-width: 760px) {
    .app-shell {
        padding: 76px 16px 16px;
    }

    .sidebar {
        width: min(390px, 100vw);
        padding: 16px;
    }

    .brand-block,
    .panel,
    .hero-card,
    .question-card {
        padding: 20px;
        border-radius: 24px;
    }

    .hero-card,
    .question-header {
        flex-direction: column;
        align-items: stretch;
    }

    .answers-grid {
        grid-template-columns: 1fr;
    }

    .lesson-grid {
        grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr));
    }

    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 520px) {
    .app-shell {
        grid-template-columns: minmax(0, 1fr) clamp(68px, 22vw, 84px);
        padding: 70px 8px 12px;
        gap: 8px;
    }

    .settings-toggle-btn {
        width: 48px;
        height: 48px;
        font-size: 1.15rem;
    }

    .sidebar {
        width: 100vw;
        padding: 14px;
    }

    .lesson-grid,
    .stats-grid {
        grid-template-columns: 1fr;
    }

    .prize-rail {
        top: 68px;
        max-height: calc(100vh - 80px);
    }

    .prize-rail .gains-panel {
        padding: 8px;
        border-radius: 18px;
    }

    .prize-rail .panel-heading {
        justify-content: center;
    }

    .prize-rail h2,
    .session-chip {
        position: absolute;
        width: 1px;
        height: 1px;
        overflow: hidden;
        clip: rect(0 0 0 0);
        white-space: nowrap;
    }

    .prize-emoji {
        width: 34px;
        height: 34px;
        font-size: 1.35rem;
    }

    .gains-list {
        grid-template-columns: 1fr;
        margin-top: 8px;
        gap: 5px;
    }

    .gains-list li {
        padding: 7px 4px;
        text-align: center;
        font-size: clamp(0.62rem, 2.45vw, 0.75rem);
        line-height: 1.15;
        border-radius: 10px;
    }

    .status-strip {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 8px;
    }

    .status-card {
        gap: 8px;
        padding: 12px 10px;
        border-radius: 16px;
    }

    .status-card strong {
        font-size: 1rem;
    }

    .label {
        font-size: 0.76rem;
    }

    .timer-bar {
        height: 7px;
    }

    .lesson-btn {
        min-height: 150px;
        padding: 18px;
    }

    .question-card {
        padding: 18px;
    }

    .answers-grid {
        gap: 12px;
        margin-top: 18px;
    }

    .answer-btn {
        min-height: 78px;
        padding: 14px 16px;
    }

    .jokers-row {
        display: grid;
        grid-template-columns: 1fr 1fr;
    }

    .joker-btn {
        min-width: 0;
        width: 100%;
    }

    .overlay {
        padding: 12px;
    }

    .overlay-card {
        width: 100%;
        padding: 22px 18px;
        border-radius: 22px;
    }
}