:root {
    color-scheme: dark;
    --bg: #060811;
    --surface: #0c1220;
    --surface-2: #111928;
    --line: #263246;
    --text: #edf6ff;
    --muted: #9fb2c8;
    --cyan: #34e7ff;
    --lime: #8cff8c;
    --magenta: #ff4fd8;
    --amber: #ffcb5b;
    --danger: #ff6b6b;
    --shadow: 0 20px 70px rgba(0, 0, 0, 0.35);
}

* {
    box-sizing: border-box;
}

html {
    min-width: 320px;
}

body {
    margin: 0;
    min-height: 100vh;
    background:
        linear-gradient(rgba(52, 231, 255, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(140, 255, 140, 0.045) 1px, transparent 1px),
        radial-gradient(circle at 18% 0%, rgba(52, 231, 255, 0.18), transparent 34%),
        #060811;
    background-size: 34px 34px, 34px 34px, auto, auto;
    color: var(--text);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    letter-spacing: 0;
}

a {
    color: inherit;
    text-decoration: none;
}

button,
input,
select,
textarea {
    font: inherit;
}

.topbar {
    position: sticky;
    top: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    gap: 18px;
    min-height: 72px;
    padding: 14px clamp(16px, 3vw, 42px);
    border-bottom: 1px solid rgba(52, 231, 255, 0.18);
    background: rgba(6, 8, 17, 0.88);
    backdrop-filter: blur(18px);
}

.auth-shell .topbar {
    justify-content: center;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    min-width: max-content;
    color: var(--text);
    font-weight: 800;
}

.brand-mark {
    display: grid;
    place-items: center;
    width: 38px;
    height: 38px;
    border: 1px solid var(--cyan);
    border-radius: 8px;
    color: var(--cyan);
    box-shadow: 0 0 24px rgba(52, 231, 255, 0.25);
}

.main-nav {
    display: flex;
    flex: 1;
    align-items: center;
    gap: 6px;
    overflow-x: auto;
}

.main-nav a,
.logout-form button,
.button {
    min-height: 40px;
    border: 1px solid rgba(52, 231, 255, 0.32);
    border-radius: 8px;
    background: rgba(12, 18, 32, 0.8);
    color: var(--text);
    cursor: pointer;
}

.main-nav a {
    display: inline-flex;
    align-items: center;
    padding: 0 14px;
    color: var(--muted);
    white-space: nowrap;
}

.main-nav a[aria-current="page"],
.main-nav a:hover {
    border-color: var(--cyan);
    color: var(--cyan);
    background: rgba(52, 231, 255, 0.09);
}

.logout-form {
    margin: 0;
}

.logout-form button {
    padding: 0 14px;
    color: var(--muted);
}

.page-wrap {
    width: min(1680px, calc(100% - 32px));
    margin: 0 auto;
    padding: 32px 0 72px;
}

.auth-shell .page-wrap {
    width: min(1180px, calc(100% - 32px));
}

.app-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    width: min(1680px, calc(100% - 32px));
    margin: 0 auto;
    padding: 18px 0 28px;
    border-top: 1px solid rgba(52, 231, 255, 0.16);
    color: var(--muted);
    font-size: 0.86rem;
}

.auth-shell .app-footer {
    width: min(1180px, calc(100% - 32px));
}

.app-footer div {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
}

.app-footer strong {
    color: var(--cyan);
    letter-spacing: 0.04em;
}

.app-footer span {
    color: var(--muted);
}

.app-footer p {
    margin: 0;
    text-align: right;
}

.auth-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(320px, 420px);
    gap: 24px;
    align-items: stretch;
    min-height: calc(100vh - 150px);
}

.auth-visual,
.about-hero,
.dashboard-head,
.section-head,
.panel,
.auth-panel,
.answer-sheet,
.leaderboard,
.problem-statement,
.submit-panel,
.comment-item {
    border: 1px solid rgba(52, 231, 255, 0.18);
    border-radius: 8px;
    background: rgba(12, 18, 32, 0.86);
    box-shadow: var(--shadow);
}

.auth-visual {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: clamp(28px, 6vw, 70px);
    background:
        linear-gradient(135deg, rgba(52, 231, 255, 0.18), rgba(255, 79, 216, 0.08)),
        rgba(12, 18, 32, 0.9);
}

.auth-panel {
    align-self: center;
    padding: clamp(24px, 4vw, 38px);
}

.eyebrow {
    margin: 0 0 12px;
    color: var(--lime);
    font-size: 0.8rem;
    font-weight: 800;
    text-transform: uppercase;
}

h1,
h2,
h3,
p {
    margin-top: 0;
}

h1 {
    margin-bottom: 16px;
    font-size: clamp(2rem, 5vw, 4.4rem);
    line-height: 1.06;
}

.auth-panel h2,
.panel h2,
.leaderboard h2,
.submit-panel h2,
.problem-statement h2 {
    margin-bottom: 16px;
    font-size: 1.2rem;
}

.hero-copy,
.body-copy,
.problem-card p,
.problem-statement p,
.comment-item p,
.feedback-card p {
    color: var(--muted);
    line-height: 1.7;
}

.form-field {
    margin-bottom: 16px;
}

.form-field label,
.submit-panel label {
    display: block;
    margin-bottom: 8px;
    color: var(--muted);
    font-size: 0.9rem;
    font-weight: 700;
}

input,
select,
textarea,
.control-input,
.code-editor,
.comment-input {
    width: 100%;
    min-height: 44px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: rgba(6, 8, 17, 0.9);
    color: var(--text);
    padding: 11px 12px;
    outline: none;
}

textarea {
    resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--cyan);
    box-shadow: 0 0 0 3px rgba(52, 231, 255, 0.14);
}

.help-text {
    margin: 6px 0 0;
    color: var(--muted);
    font-size: 0.82rem;
}

.form-errors,
.field-errors,
.message {
    border-radius: 8px;
    padding: 10px 12px;
    margin-bottom: 12px;
}

.form-errors,
.field-errors {
    border: 1px solid rgba(255, 107, 107, 0.36);
    color: #ffd1d1;
    background: rgba(255, 107, 107, 0.09);
}

.form-errors ul,
.field-errors ul {
    margin: 0;
    padding-left: 18px;
}

.messages {
    margin-bottom: 18px;
}

.message {
    border: 1px solid rgba(140, 255, 140, 0.34);
    color: #dfffe0;
    background: rgba(140, 255, 140, 0.08);
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 18px;
    font-weight: 800;
    background: linear-gradient(135deg, rgba(52, 231, 255, 0.28), rgba(140, 255, 140, 0.16));
}

.button:hover {
    border-color: var(--lime);
    color: var(--lime);
}

.button.secondary {
    background: rgba(12, 18, 32, 0.85);
}

.button-wide {
    width: 100%;
}

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

.compact-form {
    margin: 0;
}

.button-compact {
    min-height: 28px;
    padding: 4px 10px;
    font-size: 0.8rem;
}

.solved-badge {
    float: right;
    color: var(--lime);
}

.empty-wide {
    grid-column: 1 / -1;
}

.auth-switch {
    margin: 16px 0 0;
    color: var(--muted);
}

.auth-switch a {
    color: var(--cyan);
    font-weight: 800;
}

.dashboard-head,
.section-head,
.about-hero {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding: clamp(20px, 4vw, 34px);
    margin-bottom: 22px;
}

.about-hero-clean {
    justify-content: flex-start;
}

.about-hero-clean > div {
    max-width: 860px;
}

.dashboard-head h1,
.section-head h1,
.about-hero h1 {
    font-size: clamp(1.8rem, 4vw, 3.4rem);
}

.dashboard-grid,
.timeline-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}

.panel {
    padding: 22px;
}

.span-2 {
    grid-column: span 2;
}

.panel-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 16px;
}

.panel-title h2 {
    margin: 0;
}

.panel-title span,
.score-chip,
.difficulty {
    display: inline-flex;
    align-items: center;
    min-height: 28px;
    border: 1px solid rgba(255, 203, 91, 0.32);
    border-radius: 999px;
    padding: 0 10px;
    color: var(--amber);
    font-size: 0.8rem;
    font-weight: 800;
    white-space: nowrap;
}

.rank-list,
.stack-list,
.submission-log,
.comment-stream {
    display: grid;
    gap: 10px;
}

.rank-row {
    display: grid;
    grid-template-columns: 34px minmax(80px, 1fr) minmax(100px, 1.4fr) 48px;
    align-items: center;
    gap: 10px;
    min-height: 42px;
    color: var(--muted);
}

.rank-row strong,
.rank-row b {
    color: var(--text);
}

.bar {
    height: 10px;
    border-radius: 999px;
    background: rgba(159, 178, 200, 0.14);
    overflow: hidden;
}

.bar i {
    display: block;
    width: var(--bar);
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--cyan), var(--lime));
}

.stack-list a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    min-height: 42px;
    border: 1px solid rgba(159, 178, 200, 0.14);
    border-radius: 8px;
    padding: 10px 12px;
    color: var(--muted);
    background: rgba(6, 8, 17, 0.35);
}

.stack-list b {
    color: var(--cyan);
    white-space: nowrap;
}

.empty-state {
    margin: 0;
    color: var(--muted);
}

.signal-board {
    display: grid;
    grid-template-columns: repeat(2, minmax(120px, 1fr));
    gap: 10px;
    width: min(360px, 100%);
}

.signal-board span,
.neon-list li,
.career-list span {
    border: 1px solid rgba(52, 231, 255, 0.22);
    border-radius: 8px;
    padding: 12px;
    background: rgba(6, 8, 17, 0.36);
    color: var(--muted);
}

.neon-list {
    display: grid;
    gap: 10px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.career-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.career-list span {
    display: inline-flex;
    align-items: center;
    min-height: 42px;
    max-width: 100%;
    overflow-wrap: anywhere;
}

.honors-panel {
    overflow: hidden;
}

.honors-timeline {
    position: relative;
    display: grid;
    gap: 18px;
    padding-left: 8px;
}

.honors-timeline::before {
    content: "";
    position: absolute;
    top: 8px;
    bottom: 8px;
    left: 68px;
    width: 2px;
    background: linear-gradient(180deg, var(--cyan), var(--magenta), var(--lime));
    box-shadow: 0 0 18px rgba(52, 231, 255, 0.35);
}

.timeline-year {
    position: relative;
    display: grid;
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 18px;
    align-items: start;
}

.year-marker {
    position: sticky;
    top: 96px;
    display: grid;
    place-items: center;
    width: 68px;
    min-height: 40px;
    border: 1px solid rgba(52, 231, 255, 0.36);
    border-radius: 8px;
    background: rgba(6, 8, 17, 0.9);
    color: var(--cyan);
    font-weight: 900;
    box-shadow: 0 0 22px rgba(52, 231, 255, 0.16);
}

.year-events {
    display: grid;
    gap: 10px;
}

.year-events article {
    position: relative;
    display: grid;
    gap: 6px;
    border: 1px solid rgba(159, 178, 200, 0.16);
    border-radius: 8px;
    padding: 14px 16px;
    background:
        linear-gradient(90deg, rgba(52, 231, 255, 0.1), transparent 42%),
        rgba(6, 8, 17, 0.42);
}

.year-events article::before {
    content: "";
    position: absolute;
    left: -25px;
    top: 20px;
    width: 10px;
    height: 10px;
    border: 2px solid var(--cyan);
    border-radius: 999px;
    background: var(--bg);
    box-shadow: 0 0 16px rgba(52, 231, 255, 0.7);
}

.year-events strong {
    color: var(--text);
    line-height: 1.45;
}

.year-events span {
    color: var(--muted);
    line-height: 1.55;
}

.members-layout,
.comments-console {
    display: grid;
    grid-template-columns: minmax(260px, 0.42fr) minmax(0, 1fr);
    gap: 18px;
    align-items: start;
}

.goal-panel {
    position: sticky;
    top: 92px;
}

.member-board {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.member-card,
.selected-brief {
    border: 1px solid rgba(52, 231, 255, 0.18);
    border-radius: 8px;
    background: rgba(12, 18, 32, 0.86);
    box-shadow: var(--shadow);
}

.member-card {
    display: grid;
    gap: 12px;
    padding: 18px;
}

.member-topline {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
}

.member-topline strong,
.member-list-item strong {
    display: block;
    margin-bottom: 4px;
}

.member-topline span,
.member-list-item span,
.member-list-item small,
.member-goal,
.ai-note {
    color: var(--muted);
}

.member-stats,
.analysis-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.member-stats span,
.analysis-grid span {
    display: inline-flex;
    align-items: center;
    min-height: 30px;
    border: 1px solid rgba(159, 178, 200, 0.16);
    border-radius: 999px;
    padding: 0 10px;
    color: var(--cyan);
    font-size: 0.82rem;
    font-weight: 800;
}

.member-goal,
.ai-note {
    margin: 0;
    line-height: 1.6;
}

.ai-note {
    color: var(--lime);
}

.member-bar {
    height: 8px;
}

.mini-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 34px;
    border: 1px solid rgba(52, 231, 255, 0.32);
    border-radius: 8px;
    padding: 0 10px;
    color: var(--cyan);
    font-size: 0.82rem;
    font-weight: 800;
    white-space: nowrap;
}

.member-sidebar {
    position: sticky;
    top: 92px;
}

.member-list {
    display: grid;
    gap: 10px;
}

.member-list-item {
    display: grid;
    gap: 6px;
    border: 1px solid rgba(159, 178, 200, 0.16);
    border-radius: 8px;
    padding: 14px;
    background: rgba(6, 8, 17, 0.36);
}

.member-list-item[aria-current="page"],
.member-list-item:hover {
    border-color: var(--cyan);
    background: rgba(52, 231, 255, 0.08);
}

.conversation-panel {
    display: grid;
    gap: 14px;
}

.selected-brief {
    display: grid;
    gap: 14px;
    padding: 20px;
}

.analysis-summary {
    margin: 0;
    color: var(--muted);
    line-height: 1.7;
}

.target-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.target-actions span,
.analysis-meta {
    display: inline-flex;
    align-items: center;
    width: fit-content;
    min-height: 30px;
    border: 1px solid rgba(140, 255, 140, 0.22);
    border-radius: 999px;
    padding: 0 10px;
    color: var(--lime);
    font-size: 0.82rem;
    font-weight: 800;
    background: rgba(140, 255, 140, 0.07);
}

.analysis-refresh-form {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
}

.analysis-refresh-form span {
    color: var(--muted);
    font-size: 0.84rem;
}

.comment-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
}

.comment-actions form {
    margin: 0;
}

.reaction-button {
    min-height: 32px;
    border: 1px solid rgba(159, 178, 200, 0.18);
    border-radius: 999px;
    padding: 0 10px;
    color: var(--muted);
    background: rgba(6, 8, 17, 0.48);
    cursor: pointer;
}

.reaction-button:hover,
.reaction-button.is-active {
    border-color: var(--cyan);
    color: var(--cyan);
    background: rgba(52, 231, 255, 0.1);
}

.week-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.week-tabs a {
    display: inline-flex;
    align-items: center;
    min-height: 38px;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 0 13px;
    color: var(--muted);
}

.week-tabs a[aria-current="page"] {
    border-color: var(--cyan);
    color: var(--cyan);
    background: rgba(52, 231, 255, 0.1);
}

.exam-layout,
.comments-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.45fr) minmax(300px, 0.8fr);
    gap: 18px;
    align-items: start;
}

.coding-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
    align-items: stretch;
}

.judge-layout {
    min-height: calc(100vh - 220px);
}

.judge-pane {
    max-height: calc(100vh - 220px);
    min-height: 560px;
    overflow-y: auto;
}

.answer-sheet,
.leaderboard,
.exam-paper-panel,
.accuracy-panel,
.exam-status-card,
.problem-statement,
.submit-panel,
.comment-form {
    padding: 22px;
}

.exam-status-card,
.exam-workspace,
.exam-insights {
    margin-bottom: 18px;
}

.exam-status-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    border: 1px solid rgba(52, 231, 255, 0.18);
    border-radius: 8px;
    background: rgba(12, 18, 32, 0.86);
    box-shadow: var(--shadow);
}

.exam-status-card > div:first-child {
    display: grid;
    gap: 6px;
}

.exam-status-card > div:first-child span {
    color: var(--lime);
    font-size: 0.84rem;
    font-weight: 900;
    text-transform: uppercase;
}

.exam-status-card > div:first-child strong {
    font-size: 1.25rem;
}

.exam-status-card dl {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 0;
}

.exam-status-card dl div {
    min-width: 132px;
    border: 1px solid rgba(159, 178, 200, 0.16);
    border-radius: 8px;
    padding: 10px 12px;
    background: rgba(6, 8, 17, 0.42);
}

.exam-status-card dt {
    margin-bottom: 5px;
    color: var(--muted);
    font-size: 0.76rem;
    font-weight: 800;
}

.exam-status-card dd {
    margin: 0;
    color: var(--text);
    font-weight: 800;
}

.status-open {
    border-color: rgba(140, 255, 140, 0.36);
}

.status-closed {
    border-color: rgba(255, 203, 91, 0.28);
}

.status-scheduled,
.status-not_configured {
    border-color: rgba(52, 231, 255, 0.26);
}

.admin-schedule-panel {
    display: grid;
    grid-template-columns: minmax(220px, 0.45fr) minmax(0, 1fr);
    gap: 18px;
    align-items: center;
    margin-bottom: 18px;
    padding: 22px;
    border: 1px solid rgba(52, 231, 255, 0.18);
    border-radius: 8px;
    background: rgba(12, 18, 32, 0.86);
    box-shadow: var(--shadow);
}

.admin-schedule-panel h2 {
    margin: 4px 0 0;
    font-size: 1.2rem;
}

.schedule-form {
    display: grid;
    gap: 12px;
}

.schedule-fields {
    display: grid;
    grid-template-columns: minmax(170px, 1fr) minmax(170px, 1fr) auto;
    gap: 12px;
    align-items: end;
}

.schedule-fields .form-field {
    margin-bottom: 0;
}

.switch-row {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    width: fit-content;
    color: var(--muted);
    font-weight: 800;
}

.switch-input {
    width: 20px;
    min-height: 20px;
    accent-color: var(--cyan);
}

.exam-workspace {
    display: grid;
    --exam-pane-height: min(78vh, 820px);
    grid-template-columns: minmax(0, 8fr) minmax(320px, 2fr);
    gap: 18px;
    align-items: stretch;
}

.essay-layout {
    display: grid;
    grid-template-columns: minmax(280px, 0.78fr) minmax(0, 1.22fr);
    gap: 18px;
    align-items: start;
}

.essay-guide,
.essay-submit-panel,
.essay-grade-card {
    padding: 22px;
}

.essay-part-list {
    display: grid;
    gap: 10px;
    margin-bottom: 18px;
}

.essay-part-list div,
.essay-result,
.essay-ai-box {
    border: 1px solid rgba(159, 178, 200, 0.16);
    border-radius: 8px;
    padding: 14px;
    background: rgba(6, 8, 17, 0.38);
}

.essay-part-list strong {
    display: block;
    margin-bottom: 4px;
    color: var(--cyan);
}

.essay-part-list span,
.essay-result p,
.essay-ai-box p {
    margin: 0;
    color: var(--muted);
    line-height: 1.7;
}

.essay-downloads {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 16px;
}

.essay-result {
    display: grid;
    gap: 10px;
    margin-top: 16px;
}

.essay-grading-list {
    display: grid;
    gap: 18px;
}

.essay-grade-card {
    display: grid;
    gap: 16px;
}

.essay-review-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(320px, 0.65fr);
    gap: 18px;
    align-items: start;
}

.essay-pdf-column,
.essay-grading-column {
    display: grid;
    gap: 14px;
}

.essay-grading-column {
    position: sticky;
    top: 92px;
}

.essay-pdf-panel {
    display: grid;
    gap: 10px;
}

.essay-pdf-panel .panel-title {
    margin-bottom: 0;
}

.essay-pdf-viewer {
    height: min(72vh, 760px);
    min-height: 520px;
}

.essay-ai-box {
    display: grid;
    gap: 10px;
}

.essay-ai-box .panel-title {
    margin-bottom: 0;
}

.essay-grade-form {
    display: grid;
    gap: 12px;
    border-top: 1px solid rgba(159, 178, 200, 0.14);
    padding-top: 16px;
}

.essay-grade-form .form-field {
    margin-bottom: 0;
}

.essay-comment-field {
    min-width: 0;
}

.exam-paper-panel,
.accuracy-panel {
    border: 1px solid rgba(52, 231, 255, 0.18);
    border-radius: 8px;
    background: rgba(12, 18, 32, 0.86);
    box-shadow: var(--shadow);
}

.pdf-viewer {
    display: block;
    width: 100%;
    height: var(--exam-pane-height);
    min-height: 560px;
    border: 1px solid rgba(159, 178, 200, 0.18);
    border-radius: 8px;
    background: #05070c;
}

.exam-placeholder {
    display: grid;
    place-items: center;
    min-height: 560px;
    border: 1px dashed rgba(52, 231, 255, 0.28);
    border-radius: 8px;
    padding: 28px;
    text-align: center;
    background: rgba(6, 8, 17, 0.42);
}

.exam-placeholder strong {
    color: var(--cyan);
    font-size: 1.15rem;
}

.exam-placeholder p {
    max-width: 380px;
    color: var(--muted);
    line-height: 1.7;
}

.exam-insights {
    display: grid;
    grid-template-columns: minmax(320px, 0.9fr) minmax(0, 1.1fr);
    gap: 18px;
    align-items: start;
}

.answer-section {
    margin-bottom: 24px;
}

.exam-workspace .answer-sheet {
    min-width: 0;
    height: calc(var(--exam-pane-height) + 82px);
    min-height: 642px;
    overflow: hidden;
    padding: 18px;
    display: flex;
    flex-direction: column;
}

.answer-columns {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    flex: 1;
    min-height: 0;
}

.exam-workspace .answer-columns .answer-grid,
.exam-workspace .answer-columns .ox-grid {
    grid-template-columns: 1fr;
}

.exam-workspace .answer-columns .answer-section {
    min-height: 0;
    overflow-y: auto;
    padding-right: 4px;
    margin-bottom: 0;
}

.locked-banner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    border: 1px solid rgba(140, 255, 140, 0.28);
    border-radius: 8px;
    padding: 12px;
    margin-bottom: 18px;
    color: var(--lime);
    background: rgba(140, 255, 140, 0.08);
}

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

.accuracy-card {
    display: grid;
    gap: 10px;
    border: 1px solid rgba(159, 178, 200, 0.16);
    border-radius: 8px;
    padding: 14px;
    background: rgba(6, 8, 17, 0.42);
}

.accuracy-card > div:first-child {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.accuracy-card > div:first-child span {
    color: var(--amber);
    font-size: 0.82rem;
    font-weight: 800;
}

.accuracy-card p {
    margin: 0;
    color: var(--muted);
}

.answer-distribution {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.answer-distribution span {
    display: inline-flex;
    align-items: center;
    min-height: 26px;
    border: 1px solid rgba(52, 231, 255, 0.16);
    border-radius: 999px;
    padding: 0 8px;
    color: var(--muted);
    font-size: 0.78rem;
}

.locked-banner span {
    color: var(--muted);
    font-size: 0.86rem;
}

.button:disabled {
    cursor: not-allowed;
    opacity: 0.58;
}

.answer-grid {
    display: grid;
    grid-template-columns: repeat(10, minmax(58px, 1fr));
    gap: 8px;
}

.ox-grid {
    grid-template-columns: repeat(10, minmax(58px, 1fr));
}

.answer-cell {
    display: grid;
    gap: 6px;
    min-width: 0;
}

.answer-cell span {
    color: var(--muted);
    font-size: 0.78rem;
    font-weight: 800;
}

.answer-select {
    width: 100%;
    max-width: 100%;
    min-width: 0;
    height: 40px;
    min-height: 40px;
    padding: 0 8px;
}

.exam-workspace .answer-cell {
    min-width: 0;
}

.exam-workspace .answer-sheet .panel-title h2 {
    font-size: clamp(1.08rem, 1.4vw, 1.35rem);
}

.podium {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
    margin-bottom: 16px;
}

.podium-card {
    display: grid;
    gap: 8px;
    min-height: 116px;
    border: 1px solid rgba(52, 231, 255, 0.18);
    border-radius: 8px;
    padding: 14px;
    background: rgba(6, 8, 17, 0.48);
}

.podium-card span {
    color: var(--amber);
    font-size: 1.6rem;
    font-weight: 900;
}

.podium-card strong {
    min-width: 0;
    overflow-wrap: anywhere;
}

.podium-card b {
    color: var(--lime);
}

.rank-1 {
    border-color: rgba(255, 203, 91, 0.55);
}

.rank-2 {
    border-color: rgba(52, 231, 255, 0.45);
}

.rank-3 {
    border-color: rgba(255, 79, 216, 0.38);
}

.compact {
    margin-top: 24px;
}

.rank-list.mini .rank-row {
    grid-template-columns: minmax(80px, 1fr) minmax(90px, 1fr) 42px;
}

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

.problem-card,
.feedback-card {
    border: 1px solid rgba(159, 178, 200, 0.16);
    border-radius: 8px;
    padding: 16px;
    background: rgba(6, 8, 17, 0.42);
}

.problem-card {
    display: grid;
    gap: 8px;
}

.problem-card span {
    color: var(--amber);
    font-size: 0.78rem;
    font-weight: 800;
}

.problem-card strong {
    font-size: 1.04rem;
}

.problem-card:hover {
    border-color: var(--cyan);
}

.problem-statement h3 {
    margin: 22px 0 8px;
    color: var(--cyan);
    font-size: 1rem;
}

pre {
    overflow-x: auto;
    border: 1px solid rgba(159, 178, 200, 0.16);
    border-radius: 8px;
    padding: 14px;
    background: #05070c;
    color: #dfffe0;
    white-space: pre-wrap;
}

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

.code-editor {
    min-height: 360px;
    margin-bottom: 12px;
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
    line-height: 1.55;
}

.judge-form {
    display: grid;
    gap: 10px;
    margin-bottom: 24px;
}

.judge-form .code-editor {
    min-height: 420px;
}

.submission-log {
    margin-top: 24px;
}

.feedback-card > div,
.comment-item > div {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 10px;
}

.feedback-card span,
.comment-item span {
    color: var(--muted);
    font-size: 0.84rem;
}

.comment-item {
    padding: 18px;
}

.comment-item p,
.feedback-card p {
    margin-bottom: 0;
}

.feedback-card.status-score-100 {
    border-color: rgba(140, 255, 140, 0.55);
}

.feedback-card.status-score-100 strong,
.score-chip.score-success,
.feedback-snapshot.is-success p {
    color: var(--lime);
}

.feedback-card.status-error {
    border-color: rgba(255, 107, 107, 0.55);
}

.feedback-card.status-error strong,
.score-chip.score-error,
.feedback-snapshot.is-error p {
    color: var(--danger);
}

.review-timeline {
    display: grid;
    gap: 18px;
}

.review-card {
    border: 1px solid rgba(52, 231, 255, 0.18);
    border-radius: 8px;
    padding: 22px;
    background: rgba(12, 18, 32, 0.86);
    box-shadow: var(--shadow);
}

.review-head,
.review-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.review-head {
    margin-bottom: 16px;
}

.review-head h2 {
    margin: 0 0 6px;
    color: var(--cyan);
    font-size: 1.1rem;
}

.review-head span {
    color: var(--muted);
    font-size: 0.9rem;
}

.review-body {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.code-snapshot,
.feedback-snapshot {
    border: 1px solid rgba(159, 178, 200, 0.16);
    border-radius: 8px;
    padding: 16px;
    background: rgba(6, 8, 17, 0.42);
}

.code-snapshot h3,
.feedback-snapshot h3 {
    margin: 0 0 12px;
    color: var(--muted);
    font-size: 0.9rem;
}

.code-snapshot pre {
    max-height: 360px;
    margin: 0;
    border: 0;
    padding: 0;
    background: transparent;
}

.feedback-snapshot p {
    margin: 0;
    color: var(--text);
    line-height: 1.7;
}

@media (max-width: 1100px) {
    .topbar {
        flex-wrap: wrap;
    }

    .main-nav {
        order: 3;
        flex-basis: 100%;
    }

    .auth-layout,
    .exam-layout,
    .exam-workspace,
    .exam-insights,
    .essay-layout,
    .essay-review-layout,
    .essay-grade-form,
    .admin-schedule-panel,
    .schedule-fields,
    .coding-layout,
    .review-body,
    .comments-layout,
    .members-layout,
    .comments-console {
        grid-template-columns: 1fr;
    }

    .dashboard-grid,
    .timeline-grid,
    .member-board {
        grid-template-columns: 1fr 1fr;
    }

    .goal-panel,
    .member-sidebar {
        position: static;
    }

    .span-2 {
        grid-column: 1 / -1;
    }

    .answer-grid,
    .ox-grid {
        grid-template-columns: repeat(5, minmax(58px, 1fr));
    }

    .exam-status-card {
        align-items: flex-start;
        flex-direction: column;
    }

    .judge-pane {
        max-height: none;
        min-height: 0;
    }

    .essay-grading-column {
        position: static;
    }
}

@media (max-width: 640px) {
    .answer-columns {
        grid-template-columns: 1fr;
    }
    
    .page-wrap {
        width: min(100% - 24px, 1180px);
        padding-top: 20px;
    }

    .app-footer {
        width: min(100% - 24px, 1180px);
        align-items: flex-start;
        flex-direction: column;
    }

    .app-footer p {
        text-align: left;
    }

    .topbar {
        padding: 12px;
    }

    .brand {
        font-size: 0.95rem;
    }

    .logout-form {
        margin-left: auto;
    }

    .auth-visual,
    .auth-panel,
    .dashboard-head,
    .section-head,
    .about-hero,
    .panel,
    .answer-sheet,
    .leaderboard,
    .problem-statement,
    .submit-panel,
    .comment-form,
    .comment-item {
        padding: 18px;
    }

    .dashboard-head,
    .section-head,
    .about-hero {
        align-items: flex-start;
        flex-direction: column;
    }

    .dashboard-grid,
    .timeline-grid,
    .problem-grid,
    .sample-grid,
    .podium,
    .signal-board,
    .member-board,
    .accuracy-grid {
        grid-template-columns: 1fr;
    }

    .pdf-viewer,
    .exam-placeholder {
        min-height: 420px;
        height: 62vh;
    }

    .rank-row {
        grid-template-columns: 30px minmax(70px, 1fr) minmax(80px, 1fr) 40px;
        gap: 8px;
    }

    .rank-row span {
        overflow-wrap: anywhere;
    }

    .honors-timeline {
        padding-left: 0;
    }

    .honors-timeline::before {
        left: 34px;
    }

    .timeline-year {
        grid-template-columns: 68px minmax(0, 1fr);
        gap: 12px;
    }

    .year-marker {
        width: 56px;
        min-height: 36px;
        font-size: 0.86rem;
    }

    .year-events article::before {
        left: -17px;
    }

    .answer-grid,
    .ox-grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }

    .feedback-card > div,
    .comment-item > div,
    .review-head,
    .review-actions {
        display: grid;
    }
}

@media (max-width: 420px) {
    .answer-grid,
    .ox-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .rank-row,
    .rank-list.mini .rank-row {
        grid-template-columns: 1fr;
    }
}