:root {
    --bg: #ffffff;
    --bg-soft: #f5f8fc;
    --panel: rgba(255, 255, 255, 0.94);
    --panel-strong: #ffffff;
    --text: #0d2038;
    --muted: #65758a;
    --line: rgba(22, 52, 86, 0.14);
    --blue: #0b63ce;
    --blue-dark: #084b9c;
    --blue-soft: #e9f2ff;
    --cyan: #20c4df;
    --green: #14a46c;
    --red: #d14b57;
    --gold: #d99a21;
    --shadow: 0 10px 28px rgba(22, 52, 86, 0.12);
    --radius: 8px;
    --fast: 160ms ease;
}

* {
    box-sizing: border-box;
}

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

body {
    margin: 0;
    font-family: Georgia, "Times New Roman", serif;
    color: var(--text);
    background: #ffffff;
}

button,
select,
input {
    font: inherit;
}

button {
    border: 0;
    cursor: pointer;
}

button:disabled {
    cursor: not-allowed;
    opacity: 0.55;
}

a {
    color: inherit;
}

.eqsy-page-shell {
    width: min(1540px, 100%);
    margin: 0 auto;
    padding: 0;
}

.game-container {
    position: relative;
    min-height: auto;
    overflow: hidden;
    border: 1px solid rgba(22, 52, 86, 0.12);
    border-radius: 8px;
    padding: clamp(10px, 1.35vw, 18px);
    background:
        radial-gradient(circle at 60% 22%, rgba(11, 99, 206, 0.08), transparent 24rem),
        linear-gradient(180deg, #ffffff 0%, #f7fbff 100%);
    box-shadow: var(--shadow);
}

.aurora {
    position: absolute;
    pointer-events: none;
    filter: blur(2px);
    opacity: 0.42;
}

.aurora-one {
    inset: -18% auto auto -10%;
    width: 46rem;
    height: 46rem;
    background: radial-gradient(circle, rgba(11, 99, 206, 0.22), transparent 65%);
}

.aurora-two {
    right: -12%;
    bottom: -25%;
    width: 44rem;
    height: 44rem;
    background: radial-gradient(circle, rgba(32, 196, 223, 0.2), transparent 66%);
}

.topbar,
.mode-panel,
.leaderboard-strip,
.play-layout {
    position: relative;
    z-index: 1;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: clamp(8px, 1.1vw, 14px);
}

.eyebrow {
    margin: 0 0 4px;
    color: var(--blue);
    font-size: clamp(0.68rem, 0.9vw, 0.82rem);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0;
}

h1,
h2,
p {
    margin-top: 0;
}

h1 {
    margin-bottom: 0;
    color: #07192f;
    font-size: clamp(1.35rem, 2.45vw, 2.45rem);
    line-height: 1;
    letter-spacing: 0;
}

h2 {
    margin-bottom: 0;
    font-size: clamp(1rem, 1.35vw, 1.2rem);
}

.topbar-actions,
.question-actions,
.panel-heading {
    display: flex;
    align-items: center;
    gap: 10px;
}

.icon-button,
.secondary-action,
.text-button,
.primary-action,
.segment {
    min-height: 42px;
    border-radius: var(--radius);
    transition: transform var(--fast), box-shadow var(--fast), background var(--fast), color var(--fast);
}

.icon-button,
.secondary-action,
.text-button {
    padding: 0 14px;
    border: 1px solid var(--line);
    color: #173455;
    background: rgba(255, 255, 255, 0.72);
}

.icon-button:hover,
.secondary-action:hover,
.text-button:hover {
    transform: translateY(-1px);
    background: #ffffff;
}

.mode-panel {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 14px;
    margin-bottom: clamp(8px, 1vw, 12px);
}

.segmented-control,
.setup-grid,
.question-card,
.insight-card,
.leaderboard-strip {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.72);
    box-shadow: 0 14px 30px rgba(23, 52, 85, 0.08);
}

.leaderboard-strip {
    margin-bottom: clamp(8px, 1vw, 12px);
    padding: 9px 10px;
    background: rgba(255, 255, 255, 0.86);
}

.leaderboard-controls {
    display: flex;
    align-items: center;
    gap: 8px;
}

.leaderboard-controls select {
    width: auto;
    min-height: 32px;
    padding: 0 8px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: #f2f7fd;
}

.segmented-control {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    padding: 5px;
    gap: 5px;
}

.segment {
    padding: 0 10px;
    color: #173455;
    background: transparent;
    white-space: nowrap;
}

.segment.is-active {
    color: #ffffff;
    background: linear-gradient(135deg, var(--blue), var(--blue-dark));
    box-shadow: 0 10px 20px rgba(11, 99, 206, 0.26);
}

.setup-grid {
    display: grid;
    grid-template-columns: 1fr 1fr auto;
    align-items: stretch;
    gap: 8px;
    padding: 8px;
}

.select-card {
    display: grid;
    gap: 3px;
    min-width: 0;
    padding: 7px 10px;
    border-radius: var(--radius);
    background: rgba(240, 247, 255, 0.84);
}

.select-card span,
.status-label {
    color: var(--muted);
    font-size: 0.73rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0;
}

select,
input {
    width: 100%;
    border: 0;
    color: var(--text);
    background: transparent;
    outline: 0;
}

input::placeholder {
    color: var(--muted);
}

.primary-action {
    padding: 0 20px;
    color: #ffffff;
    background: linear-gradient(135deg, var(--blue), var(--cyan));
    box-shadow: 0 12px 26px rgba(11, 99, 206, 0.28);
    font-weight: 700;
}

.primary-action:hover {
    transform: translateY(-1px);
    box-shadow: 0 16px 34px rgba(11, 99, 206, 0.34);
}

.play-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.55fr) minmax(310px, 0.75fr);
    gap: clamp(8px, 1vw, 12px);
}

.question-card {
    display: flex;
    flex-direction: column;
    min-height: 0;
    padding: clamp(10px, 1.35vw, 16px);
    background: rgba(255, 255, 255, 0.88);
}

.status-strip {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 8px;
    margin-bottom: clamp(8px, 1vw, 12px);
}

.status-strip > div {
    min-width: 0;
    padding: 8px;
    border-radius: var(--radius);
    background: #f1f7ff;
}

.status-strip strong {
    display: block;
    margin-top: 4px;
    font-size: clamp(0.96rem, 1.35vw, 1.15rem);
}

.question-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 10px;
}

.question-meta span {
    padding: 7px 10px;
    border-radius: var(--radius);
    color: var(--blue-dark);
    background: var(--blue-soft);
    font-weight: 700;
}

.question-body {
    flex: 0 1 auto;
    min-height: clamp(92px, 13dvh, 140px);
    margin-bottom: 10px;
    padding: clamp(10px, 1.45vw, 16px);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: linear-gradient(180deg, #ffffff, #f7fbff);
}

#question-text {
    margin-bottom: 10px;
    font-size: clamp(1.05rem, 1.8vw, 1.55rem);
    line-height: 1.2;
    color: #07192f;
}

.question-detail {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    color: #2b4562;
}

.detail-pill {
    padding: 7px 10px;
    border-radius: var(--radius);
    background: #ecf5ff;
    font-weight: 700;
}

.answer-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    margin-bottom: 10px;
}

.answer-button {
    min-height: clamp(46px, 6dvh, 64px);
    padding: 10px;
    border: 1px solid rgba(11, 99, 206, 0.14);
    border-radius: var(--radius);
    color: #102c4c;
    background: #ffffff;
    box-shadow: 0 10px 20px rgba(23, 52, 85, 0.08);
    font-size: clamp(0.95rem, 1.25vw, 1.08rem);
    font-weight: 700;
    line-height: 1.18;
    text-align: left;
}

.answer-button:hover:not(:disabled),
.answer-button:focus-visible {
    transform: translateY(-1px);
    border-color: rgba(11, 99, 206, 0.42);
    outline: 0;
    box-shadow: 0 14px 28px rgba(11, 99, 206, 0.14);
}

.answer-button.is-correct {
    border-color: rgba(20, 164, 108, 0.55);
    background: #e9fbf3;
    color: #0c6f48;
}

.answer-button.is-incorrect {
    border-color: rgba(209, 75, 87, 0.55);
    background: #fff0f2;
    color: #9b2632;
}

.feedback-panel {
    margin-top: 0;
    margin-bottom: 10px;
    padding: 10px 12px;
    border-left: 4px solid var(--blue);
    border-radius: var(--radius);
    background: #f3f8ff;
    color: #183756;
    animation: riseIn 180ms ease both;
}

.feedback-panel.is-hidden {
    display: none;
}

.feedback-panel strong {
    color: #07192f;
}

.feedback-panel.correct {
    border-left-color: var(--green);
    background: #ebfbf4;
}

.feedback-panel.incorrect {
    border-left-color: var(--red);
    background: #fff2f3;
}

.question-actions {
    justify-content: flex-end;
}

.side-panel {
    display: grid;
    gap: 10px;
    align-content: start;
}

.insight-card {
    padding: 11px;
    background: rgba(255, 255, 255, 0.86);
}

.result-card strong {
    display: block;
    margin: 4px 0 6px;
    font-size: clamp(1.15rem, 1.55vw, 1.45rem);
    color: #07192f;
}

.result-card p {
    margin-bottom: 0;
    color: #425d78;
    line-height: 1.35;
}

.category-breakdown {
    display: grid;
    gap: 6px;
    margin-top: 10px;
}

.category-row {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 8px;
    align-items: center;
    padding: 7px 8px;
    border-radius: var(--radius);
    background: #f2f7fd;
    color: #173455;
    font-size: 0.86rem;
}

.category-row strong {
    margin: 0;
    font-size: 0.9rem;
}

.score-dialog {
    width: min(420px, calc(100% - 28px));
    padding: 0;
    border: 0;
    border-radius: var(--radius);
    color: var(--text);
    background: transparent;
}

.score-dialog::backdrop {
    background: rgba(7, 16, 31, 0.38);
}

.score-dialog-card {
    display: grid;
    gap: 12px;
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: #ffffff;
    box-shadow: var(--shadow);
}

.score-dialog-card h2,
.score-dialog-card p {
    margin: 0;
}

.score-name-field {
    display: grid;
    gap: 5px;
    padding: 10px;
    border-radius: var(--radius);
    background: #f2f7fd;
}

.score-name-field span {
    color: var(--muted);
    font-size: 0.73rem;
    font-weight: 700;
    text-transform: uppercase;
}

.score-dialog-error {
    min-height: 1.1rem;
    color: var(--red);
    font-size: 0.9rem;
    font-weight: 700;
}

.score-dialog-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
}

.panel-heading {
    justify-content: space-between;
    margin-bottom: 9px;
}

.text-button {
    min-height: 32px;
    padding: 0 10px;
    font-size: 0.86rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 7px;
    margin: 0;
}

.stats-grid div {
    padding: 7px;
    border-radius: var(--radius);
    background: #f2f7fd;
}

.stats-grid dt {
    color: var(--muted);
    font-size: 0.76rem;
    font-weight: 700;
    text-transform: uppercase;
}

.stats-grid dd {
    margin: 3px 0 0;
    font-size: 1rem;
    font-weight: 700;
}

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

.leaderboard-list li {
    display: grid;
    grid-template-columns: auto 1fr auto auto;
    gap: 8px;
    align-items: center;
    padding: 9px;
    border-radius: var(--radius);
    background: #f2f7fd;
}

.leaderboard-rank {
    display: grid;
    place-items: center;
    width: 28px;
    height: 28px;
    border-radius: var(--radius);
    color: #ffffff;
    background: var(--blue);
    font-weight: 700;
}

.leaderboard-meta {
    display: block;
    color: var(--muted);
    font-size: 0.78rem;
}

.leaderboard-scope-pill {
    padding: 5px 8px;
    border-radius: var(--radius);
    color: var(--blue-dark);
    background: var(--blue-soft);
    font-size: 0.78rem;
    font-weight: 700;
}

.internal-links {
    margin-top: 16px;
    padding: clamp(14px, 2vw, 22px);
    border-radius: 8px;
    color: #dfeeff;
    background: rgba(4, 12, 25, 0.72);
}

.is-embedded .internal-links {
    display: none;
}

.internal-links h2 {
    margin-bottom: 12px;
}

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

.link-grid a {
    padding: 11px 12px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.07);
    text-decoration: none;
    transition: background var(--fast), transform var(--fast);
}

.link-grid a:hover {
    transform: translateY(-1px);
    background: rgba(255, 255, 255, 0.13);
}

@keyframes riseIn {
    from {
        opacity: 0;
        transform: translateY(6px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}