:root {
    color-scheme: light dark;
    font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --bg: #f5f6fb;
    --bg-alt: #ecf0f6;
    --card-bg: #ffffff;
    --text: #0f172a;
    --text-muted: #4f5d75;
    --accent: #2563eb;
    --shadow: 0 12px 30px -20px rgba(15, 23, 42, 0.3);
    --surface-translucent: rgba(255, 255, 255, 0.95);
    --border-subtle: rgba(15, 23, 42, 0.08);
    --profile-trigger-bg: rgba(15, 23, 42, 0.05);
    --profile-popover-bg: rgba(255, 255, 255, 0.97);
}

body[data-theme="dark"] {
    color-scheme: dark;
    --bg: #0f172a;
    --bg-alt: #1a2740;
    --card-bg: #141f33;
    --text: #e2e8f0;
    --text-muted: #94a3b8;
    --accent: #60a5fa;
    --shadow: 0 12px 30px -20px rgba(8, 47, 73, 0.45);
    --surface-translucent: rgba(17, 31, 52, 0.92);
    --border-subtle: rgba(148, 163, 184, 0.18);
    --profile-trigger-bg: rgba(17, 31, 52, 0.92);
    --profile-popover-bg: rgba(17, 31, 52, 0.92);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background: var(--bg);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 3rem 1.5rem;
    color: var(--text);
}

[hidden] {
    display: none !important;
}

body[data-terms-accepted="true"] [data-terms-overlay] {
    display: none !important;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

body.layout {
    align-items: flex-start;
    justify-content: flex-start;
    padding: 0;
}

.page {
    width: min(960px, 100%);
}

.page--challenge {
    width: 100%;
    max-width: none;
    min-height: 100vh;
    padding: 0 2.5rem 3rem;
    display: grid;
    grid-template-rows: auto 1fr auto;
    gap: 2rem;
}

@media (max-width: 768px) {
    .page--challenge {
        padding: 0 1.25rem 2rem;
    }

    .site-nav {
        padding: 1rem 1.25rem;
        margin-left: -1.25rem;
        margin-right: -1.25rem;
        width: calc(100% + 2.5rem);
    }
}

.brand {
    display: flex;
    align-items: baseline;
    gap: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.4rem;
    text-transform: uppercase;
    font-size: 1rem;
    color: var(--accent);
    margin-bottom: 2rem;
}

.brand .mark {
    color: inherit;
}

.brand .accent {
    color: var(--text);
}

.card {
    background: var(--card-bg);
    border-radius: 20px;
    padding: clamp(2.5rem, 4vw, 3.5rem);
    box-shadow: var(--shadow);
    backdrop-filter: blur(16px);
    display: grid;
    gap: 2rem;
}

.card__header h1 {
    font-size: clamp(2.25rem, 4vw, 2.8rem);
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.card__header p {
    font-size: 1.05rem;
    color: var(--text-muted);
    max-width: 28ch;
}

.card__content {
    display: grid;
    gap: 1.75rem;
}

.detail-grid {
    display: grid;
    gap: 1.25rem;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.detail-grid .label {
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.detail-grid p {
    font-size: 1.05rem;
    font-weight: 500;
}

.alert {
    border-radius: 18px;
    padding: 1.25rem 1.5rem;
    background: rgba(250, 176, 5, 0.12);
    border: 1px solid rgba(251, 191, 36, 0.4);
}

.alert h2 {
    font-size: 1.15rem;
    margin-bottom: 0.65rem;
}

.alert p {
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.alert ul {
    list-style-type: disc;
    padding-left: 1.5rem;
    display: grid;
    gap: 0.25rem;
}

.alert code {
    font-family: "JetBrains Mono", "SFMono-Regular", ui-monospace, "Menlo", monospace;
    font-size: 0.9rem;
}

.cta {
    display: grid;
    gap: 0.75rem;
}

.cta h2 {
    font-size: 1.35rem;
    font-weight: 600;
}

.cta .muted {
    color: var(--text-muted);
    max-width: 32ch;
}

.challenge-placeholder {
    display: grid;
    gap: 1rem;
}

.challenge-placeholder h2 {
    font-size: 1.5rem;
    font-weight: 600;
}

.challenge-placeholder h3 {
    font-size: 1.35rem;
    font-weight: 600;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: 12px;
    background: var(--accent);
    color: white;
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    box-shadow: 0 12px 25px -18px var(--accent);
}

.button--disabled {
    background: rgba(148, 163, 184, 0.4);
    color: rgba(71, 85, 105, 0.7);
    cursor: not-allowed;
    box-shadow: none;
}

.footer {
    margin-top: clamp(2rem, 4vw, 2.5rem);
    text-align: center;
    color: var(--text-muted);
}

.footer a {
    color: inherit;
    text-decoration: underline;
}

.site-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    isolation: isolate;
    display: flex;
    justify-content: center;
    padding: 1.25rem 2.5rem;
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-subtle);
    margin-left: -2.5rem;
    margin-right: -2.5rem;
    width: calc(100% + 5rem);
}

.site-nav__inner {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    justify-content: space-between;
}

.site-nav__left {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
}

.site-nav__center {
    display: flex;
    align-items: center;
    justify-content: center;
}

.site-nav__right {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
}

.logo {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: rgba(37, 99, 235, 0.12);
    display: grid;
    place-items: center;
    font-size: 1.5rem;
}

.logo__image {
    width: 68%;
    height: 68%;
    object-fit: contain;
    display: block;
}

.site-nav__title {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.title-main {
    font-size: 1.2rem;
    font-weight: 600;
}

.title-sub {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.countdown,
.countdown--inactive {
    font-family: "JetBrains Mono", "SFMono-Regular", ui-monospace, "Menlo", monospace;
    font-size: 0.95rem;
    padding: 0.6rem 1.1rem;
    border-radius: 10px;
    background: rgba(15, 23, 42, 0.06);
    color: var(--text);
}

.icon-button {
    border: none;
    background: rgba(37, 99, 235, 0.12);
    color: var(--accent);
    border-radius: 12px;
    padding: 0.6rem 0.85rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s ease, background 0.2s ease;
}

.icon-button__icon svg {
    width: 20px;
    height: 20px;
}

.profile-menu {
    position: relative;
}

.profile-menu__trigger {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    border-radius: 999px;
    border: 1px solid transparent;
    background: var(--profile-trigger-bg);
    color: var(--text);
    padding: 0.35rem 0.7rem 0.35rem 0.4rem;
    cursor: pointer;
    transition: background 0.2s ease;
    box-shadow: 0 8px 18px -12px rgba(15, 23, 42, 0.4);
}

.profile-menu__trigger:hover,
.profile-menu__trigger[aria-expanded="true"] {
    background: rgba(37, 99, 235, 0.16);
    border-color: rgba(37, 99, 235, 0.25);
}

.profile-menu__avatar {
    width: 28px;
    height: 28px;
    border-radius: 10px;
    background: var(--accent);
    color: white;
    display: grid;
    place-items: center;
    font-weight: 600;
}

.profile-menu__label {
    font-size: 0.9rem;
    font-weight: 500;
}

.profile-menu__popover {
    position: absolute;
    right: 0;
    top: calc(100% + 0.5rem);
    min-width: 220px;
    background: var(--profile-popover-bg);
    color: var(--text);
    backdrop-filter: blur(18px);
    border-radius: 16px;
    box-shadow: 0 16px 40px -30px rgba(15, 23, 42, 0.4);
    padding: 1rem;
    display: none;
    font-size: 0.9rem;
    border: 1px solid var(--border-subtle);
}

.profile-menu__popover[data-open] {
    display: block;
}

.profile-menu__hint {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
}

.profile-menu__hint strong {
    color: var(--text);
}

.profile-menu__actions {
    display: grid;
    gap: 0.5rem;
}

.profile-menu__button {
    width: 100%;
    border: none;
    border-radius: 10px;
    padding: 0.65rem 0.85rem;
    font-weight: 600;
    cursor: pointer;
    background: rgba(37, 99, 235, 0.12);
    color: var(--accent);
    transition: background 0.2s ease, transform 0.2s ease;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-family: inherit;
    font-size: inherit;
    line-height: normal;
}

.profile-menu__button:hover {
    background: rgba(37, 99, 235, 0.2);
    transform: translateY(-1px);
}

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.55);
    backdrop-filter: blur(12px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    z-index: 200;
}

.terms-modal {
    width: min(640px, 100%);
    background: var(--card-bg);
    border-radius: 20px;
    padding: clamp(1.75rem, 3vw, 2.25rem);
    box-shadow: 0 30px 60px -40px rgba(15, 23, 42, 0.6);
    display: grid;
    gap: 1.5rem;
    border: 1px solid var(--border-subtle);
}

.terms-modal__header {
    display: grid;
    gap: 0.75rem;
}

.terms-modal__intro {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.terms-modal__content {
    max-height: min(50vh, 420px);
    overflow-y: auto;
    padding-right: 0.5rem;
    display: grid;
    gap: 1rem;
    color: var(--text);
    line-height: 1.6;
}

.terms-modal__content ol {
    display: grid;
    gap: 0.75rem;
    padding-left: 1.25rem;
}

.terms-modal__footer {
    display: grid;
    gap: 0.75rem;
}

.terms-modal__helper {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.terms-modal__button {
    border: none;
    border-radius: 12px;
    padding: 0.75rem 1.25rem;
    font-weight: 600;
    background: rgba(37, 99, 235, 0.12);
    color: var(--accent);
    cursor: not-allowed;
    transition: background 0.2s ease, transform 0.2s ease, color 0.2s ease;
}

.terms-modal__button[aria-live] {
    display: none;
}

.terms-modal__button:not(:disabled) {
    cursor: pointer;
    background: var(--accent);
    color: white;
}

.terms-modal__button:not(:disabled):hover {
    transform: translateY(-1px);
    box-shadow: 0 16px 34px -26px var(--accent);
}

.terms-modal__button:disabled {
    opacity: 0.6;
}

.challenge-layout {
    display: grid;
    gap: 2rem;
}

@media (min-width: 1024px) {
    .challenge-layout {
        grid-template-columns: 320px 1fr;
        align-items: start;
    }
}

.challenge-categories {
    display: grid;
    gap: 2rem;
}

.challenge-category {
    display: grid;
    gap: 1.5rem;
}

.challenge-category__header {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.challenge-category__header h3 {
    font-size: 1.2rem;
    font-weight: 600;
}

.challenge-category__description {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.challenge-category__empty {
    color: var(--text-muted);
    font-style: italic;
}

.challenge-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    width: 100%;
}

.challenge-card {
    flex: 1 1 100%;
}

@media (min-width: 720px) {
    .challenge-grid {
        justify-content: flex-start;
    }

    .challenge-card {
        flex: 0 0 380px;
    }
}

.challenge-card {
    border-radius: 16px;
    padding: 1.35rem;
    background: var(--card-bg);
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow);
    display: grid;
    gap: 1rem;
    position: relative;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
    min-width: 0;
}

.challenge-card,
.challenge-card * {
    overflow-wrap: anywhere;
    word-break: break-word;
}

.challenge-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 16px 48px -36px rgba(15, 23, 42, 0.5);
}

.challenge-card--admin {
    cursor: pointer;
}

.challenge-card__admin-actions {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.25rem 0.3rem;
    border-radius: 999px;
    background: rgba(15, 23, 42, 0.08);
    border: 1px solid var(--border-subtle);
    z-index: 2;
}

body[data-theme="dark"] .challenge-card__admin-actions {
    background: rgba(148, 163, 184, 0.16);
}

.challenge-card__admin-form {
    margin: 0;
}

.challenge-card__admin-button,
.challenge-card__admin-link {
    width: 28px;
    height: 28px;
    border-radius: 8px;
    border: none;
    background: transparent;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.95rem;
    color: var(--accent);
    cursor: pointer;
    transition: background 0.2s ease, transform 0.2s ease;
    text-decoration: none;
}

.challenge-card__admin-button:hover,
.challenge-card__admin-link:hover {
    background: rgba(37, 99, 235, 0.12);
    transform: translateY(-1px);
}

.challenge-card__admin-button[disabled],
.challenge-card__admin-button[aria-disabled="true"] {
    cursor: not-allowed;
    opacity: 0.45;
    transform: none;
    background: transparent;
}

.challenge-card__admin-button svg,
.challenge-card__admin-link svg {
    width: 16px;
    height: 16px;
    display: block;
}

.challenge-card--locked {
    opacity: 0.85;
}

.challenge-card--exclusive {
    border-style: double;
}

.challenge-card__header {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
}

.challenge-card__header h4 {
    font-size: 1.1rem;
    font-weight: 600;
    overflow-wrap: anywhere;
}

.challenge-card__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-muted);
    overflow-wrap: anywhere;
}

.challenge-card__badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.25rem 0.6rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.challenge-card__badge--regular {
    background: rgba(37, 99, 235, 0.15);
    color: var(--accent);
}

.challenge-card__badge--exclusive {
    background: rgba(239, 68, 68, 0.18);
    color: rgb(185, 28, 28);
}

.challenge-card__badge--decreasing {
    background: rgba(249, 115, 22, 0.18);
    color: rgb(154, 52, 18);
}

.challenge-card__badge--dependent {
    background: rgba(16, 185, 129, 0.18);
    color: rgb(5, 122, 85);
}

.challenge-card__points {
    font-weight: 600;
    color: var(--text);
}


.challenge-card__note {
    color: var(--text-muted);
    overflow-wrap: anywhere;
}

.challenge-card__description {
    color: var(--text-muted);
    line-height: 1.6;
    overflow-wrap: anywhere;
}

.challenge-card__description a {
    color: var(--accent);
    text-decoration: underline;
}

/* TODO: Remove temporary snow effect styles after the holiday event */
.snow-overlay {
    position: fixed;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
    z-index: 20;
}

.snowflake {
    --size: 6px;
    --duration: 10s;
    --delay: 0s;
    --opacity: 0.75;
    --x-position: 50%;
    --drift: 0.5rem;
    position: absolute;
    top: -12vh;
    left: var(--x-position);
    width: var(--size);
    height: var(--size);
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.9);
    box-shadow: 0 0 12px rgba(255, 255, 255, 0.35);
    opacity: var(--opacity);
    animation: snowfall var(--duration) linear var(--delay) infinite;
    transform: translate3d(0, -12vh, 0);
}

body[data-theme="dark"] .snowflake {
    background: rgba(226, 232, 240, 0.85);
    box-shadow: 0 0 16px rgba(148, 163, 184, 0.45);
}

@keyframes snowfall {
    0% {
        transform: translate3d(0, -12vh, 0);
    }
    100% {
        transform: translate3d(var(--drift), 110vh, 0);
    }
}

.challenge-card__prereqs {
    border-radius: 12px;
    padding: 0.75rem 0.9rem;
    background: rgba(37, 99, 235, 0.08);
    display: grid;
    gap: 0.5rem;
    overflow-wrap: anywhere;
}

.challenge-card__prereqs-label {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
}

.challenge-card__prereqs ul {
    list-style: none;
    display: grid;
    gap: 0.4rem;
}

.challenge-card__prereq--met {
    color: rgb(21, 128, 61);
}

.challenge-card__prereq--unmet {
    color: rgb(185, 28, 28);
}

.challenge-card__solves {
    display: grid;
    gap: 0.45rem;
    overflow-wrap: anywhere;
}

.challenge-card__solves-label {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
}

.challenge-card__solves ul {
    list-style: none;
    display: grid;
    gap: 0.35rem;
    font-size: 0.9rem;
}

.challenge-card__solve--team {
    font-weight: 600;
    color: var(--accent);
}

.challenge-card__actions {
    display: grid;
    gap: 0.75rem;
}

.challenge-card__form {
    display: grid;
    gap: 0.65rem;
}

.challenge-card__form-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.challenge-card__form-row {
    display: flex;
    gap: 0.75rem;
}

.challenge-card__input {
    flex: 1;
    border-radius: 12px;
    border: 1px solid var(--border-subtle);
    padding: 0.65rem 0.9rem;
    font-size: 0.95rem;
    background: var(--bg);
    color: var(--text);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.challenge-card__input:focus {
    outline: none;
    border-color: rgba(37, 99, 235, 0.55);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.challenge-card__submit {
    border: none;
    border-radius: 12px;
    padding: 0.65rem 1.25rem;
    font-weight: 600;
    background: var(--accent);
    color: white;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.challenge-card__status {
    border-radius: 12px;
    padding: 0.75rem 0.9rem;
    background: rgba(148, 163, 184, 0.12);
    color: var(--text-muted);
    height: 43px;
    overflow-wrap: anywhere;
}

.challenge-card__status-line {
    font-size: 0.9rem;
}
.panel {
    background: var(--card-bg);
    border-radius: 18px;
    padding: 1.75rem;
    box-shadow: var(--shadow);
    display: grid;
    gap: 1.4rem;
    border: 1px solid var(--border-subtle);
}

.panel__header {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.panel__header h2 {
    font-size: 1.35rem;
    font-weight: 600;
}

.panel__hint {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.toast-container {
    position: fixed;
    top: 1.5rem;
    right: 1.5rem;
    display: grid;
    gap: 0.75rem;
    z-index: 1000;
    max-width: min(320px, calc(100vw - 2rem));
    pointer-events: none;
}

.toast-container[data-position="bottom"] {
    top: auto;
    bottom: 1.5rem;
}

.toast {
    border-radius: 14px;
    padding: 0.95rem 1.1rem;
    font-weight: 500;
    border: 1px solid transparent;
    background: rgba(37, 99, 235, 0.12);
    color: var(--text);
    box-shadow: 0 18px 32px -28px rgba(15, 23, 42, 0.55);
    backdrop-filter: blur(18px);
    display: grid;
    gap: 0.4rem;
    pointer-events: auto;
    position: relative;
    overflow: hidden;
    animation: toast-enter 0.28s ease-out;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.toast--closing {
    opacity: 0;
    transform: translateX(40px);
}

.toast__content {
    line-height: 1.4;
}

.toast__close {
    position: absolute;
    top: 0.4rem;
    right: 0.55rem;
    background: transparent;
    border: none;
    color: inherit;
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0.15rem;
    line-height: 1;
}

.toast--success {
    background: rgba(34, 197, 94, 0.18);
    border-color: rgba(34, 197, 94, 0.4);
    color: rgb(21, 128, 61);
}

.toast--error {
    background: rgba(239, 68, 68, 0.18);
    border-color: rgba(239, 68, 68, 0.45);
    color: rgb(185, 28, 28);
}

.toast--warning {
    background: rgba(250, 204, 21, 0.22);
    border-color: rgba(250, 204, 21, 0.45);
    color: rgb(161, 98, 7);
}

.toast--info {
    background: rgba(37, 99, 235, 0.15);
    border-color: rgba(37, 99, 235, 0.32);
    color: rgb(30, 64, 175);
}

body[data-theme="dark"] .toast {
    background: rgba(30, 41, 59, 0.85);
    border-color: rgba(148, 163, 184, 0.18);
    color: #e2e8f0;
}

body[data-theme="dark"] .toast--success {
    background: rgba(22, 163, 74, 0.25);
    border-color: rgba(34, 197, 94, 0.45);
    color: rgb(187, 247, 208);
}

body[data-theme="dark"] .toast--error {
    background: rgba(220, 38, 38, 0.25);
    border-color: rgba(248, 113, 113, 0.5);
    color: rgb(252, 165, 165);
}

body[data-theme="dark"] .toast--warning {
    background: rgba(234, 179, 8, 0.28);
    border-color: rgba(250, 204, 21, 0.45);
    color: rgb(254, 240, 138);
}

body[data-theme="dark"] .toast--info {
    background: rgba(37, 99, 235, 0.28);
    border-color: rgba(59, 130, 246, 0.45);
    color: rgb(191, 219, 254);
}

@keyframes toast-enter {
    0% {
        opacity: 0;
        transform: translateX(40px);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

.leaderboard-grid {
    display: grid;
    gap: 1rem;
}

@media (min-width: 640px) {
    .leaderboard-grid {
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    }
}

.leaderboard-card {
    border-radius: 14px;
    padding: 1.35rem;
    background: rgba(37, 99, 235, 0.08);
    display: grid;
    gap: 0.75rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.leaderboard-card header {
    display: flex;
    justify-content: space-between;
    font-weight: 600;
}

.leaderboard-rank {
    font-size: 1.1rem;
}

.leaderboard-team {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.leaderboard-score {
    font-size: 2rem;
    font-weight: 700;
}

.leaderboard-meta {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.leaderboard-meta--badge {
    margin-left: 0.6rem;
    padding: 0.25rem 0.55rem;
    border-radius: 999px;
    background: rgba(37, 99, 235, 0.2);
    color: var(--accent);
    font-weight: 600;
}

.leaderboard-card--highlight {
    background: rgba(37, 99, 235, 0.14);
    box-shadow: 0 16px 32px -28px rgba(37, 99, 235, 0.4);
}

.challenge-panel .challenge-placeholder {
    border: 1px dashed rgba(37, 99, 235, 0.3);
    border-radius: 14px;
    padding: 1.35rem;
}