/* OIAJ — Online Judge Stylesheet
 * Design: Warm Terminal Precision
 * Palette: Stone + Teal accent
 * Fonts: Plus Jakarta Sans / JetBrains Mono
 */

/* === Font Faces === */
@font-face {
    font-family: 'Plus Jakarta Sans';
    font-weight: 400;
    font-style: normal;
    font-display: swap;
    src: url('/static/fonts/plus-jakarta-sans-400.woff2') format('woff2');
}

@font-face {
    font-family: 'Plus Jakarta Sans';
    font-weight: 600;
    font-style: normal;
    font-display: swap;
    src: url('/static/fonts/plus-jakarta-sans-600.woff2') format('woff2');
}

@font-face {
    font-family: 'Plus Jakarta Sans';
    font-weight: 800;
    font-style: normal;
    font-display: swap;
    src: url('/static/fonts/plus-jakarta-sans-800.woff2') format('woff2');
}

@font-face {
    font-family: 'JetBrains Mono';
    font-weight: 400;
    font-style: normal;
    font-display: swap;
    src: url('/static/fonts/jetbrains-mono-400.woff2') format('woff2');
}

@font-face {
    font-family: 'JetBrains Mono';
    font-weight: 600;
    font-style: normal;
    font-display: swap;
    src: url('/static/fonts/jetbrains-mono-600.woff2') format('woff2');
}

/* === Reset & Variables === */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --stone-50: #fafaf9;
    --stone-100: #f5f5f4;
    --stone-200: #e7e5e4;
    --stone-300: #d6d3d1;
    --stone-400: #a8a29e;
    --stone-500: #78716c;
    --stone-600: #57534e;
    --stone-700: #44403c;
    --stone-800: #292524;
    --stone-900: #1c1917;

    --bg: var(--stone-50);
    --bg-card: #ffffff;
    --text: black;
    --text-muted: var(--stone-500);
    --border-dark: black;
    --border: var(--stone-400);
    --border-light: var(--stone-400);

    --brand: #0a6860;
    --brand-hover: #084640;
    --brand-light: #ccfbf1;
    --brand-50: #f0fdfa;

    --success: #047853;
    --success-bg: #d1fae5;
    --success-text: #03392a;
    --warning: #d97706;
    --warning-bg: #fef3c7;
    --warning-text: #92400e;
    --danger: #dc2626;
    --danger-bg: #fee2e2;
    --danger-text: #991b1b;

    --code-bg: black;
    --code-text: white;

    --nav-bg: black;
    --nav-text: white;

    --radius-sm: 4px;
    --radius: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;

    --shadow-sm: 0 1px 2px rgba(28, 25, 23, 0.05);
    --shadow: 0 1px 3px rgba(28, 25, 23, 0.08), 0 1px 2px rgba(28, 25, 23, 0.04);
    --shadow-md: 0 4px 6px rgba(28, 25, 23, 0.06), 0 2px 4px rgba(28, 25, 23, 0.04);
    --shadow-lg: 0 10px 15px rgba(28, 25, 23, 0.06), 0 4px 6px rgba(28, 25, 23, 0.03);

    --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', 'Consolas', monospace;

    --transition: 150ms ease;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    font-smooth: always;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--brand);
    text-decoration: none;
    transition: color var(--transition);
}

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

::selection {
    background-color: var(--brand-light);
    color: var(--stone-900);
}

/* === Page entrance animation === */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(12px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* === Navbar === */
.navbar {
    background-color: var(--nav-bg);
    color: var(--nav-text);
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 56px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.brand {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    font-weight: 600;
    color: #fff;
    letter-spacing: 0.08em;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.brand-logo {
    height: 1.5rem;
    width: auto;
}

.brand:hover {
    color: #fff;
    text-decoration: none;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.nav-links a {
    color: var(--stone-400);
    font-size: 0.875rem;
    font-weight: 400;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius);
    transition: color var(--transition), background-color var(--transition);
}

.nav-links a:hover {
    color: #fff;
    background-color: rgba(255, 255, 255, 0.08);
    text-decoration: none;
}

#nav-user {
    display: contents;
}

.nav-greeting {
    color: var(--stone-400);
    font-size: 0.875rem;
    padding: 0.5rem 0.75rem;
}

.nav-greeting strong {
    color: var(--stone-200);
    font-weight: 600;
}

.nav-divider {
    width: 1px;
    height: 20px;
    background: rgba(255, 255, 255, 0.1);
    margin: 0 0.5rem;
}

/* === Container === */
.container {
    max-width: 1080px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
    animation: fadeInUp 0.3s ease;
}

/* === Headings === */
h1 {
    font-size: 1.625rem;
    font-weight: 800;
    margin-bottom: 1.25rem;
    color: var(--text);
    letter-spacing: -0.02em;
    line-height: 1.3;
}

h2 {
    font-size: 1.15rem;
    font-weight: 600;
    margin: 2rem 0 0.75rem;
    color: var(--text);
    letter-spacing: -0.01em;
}

h3 {
    font-size: 1rem;
    font-weight: 600;
    margin: 1.5rem 0 0.5rem;
    color: var(--stone-700);
}

small {
    font-size: 0.8em;
    color: var(--text-muted);
    font-weight: 400;
}

/* === Page header === */
.page-header {
    margin-bottom: 1.5rem;
}

.page-header h1 {
    margin-bottom: 0.25rem;
}

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

/* === Card === */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition);
}

.card:hover {
    box-shadow: var(--shadow);
}

.card+.card {
    margin-top: 1rem;
}

/* === Tables === */
table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin-bottom: 1.25rem;
    background: var(--bg-card);
    border: 2px solid var(--border-dark);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    font-size: 0.875rem;
}

thead {
    background-color: var(--stone-100);
}

th {
    padding: 0.625rem 1rem;
    text-align: left;
    font-weight: 600;
    font-size: 0.75rem;
    color: white;
    background-color: black;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    border-bottom: 1px solid var(--border-dark);
    white-space: nowrap;
}

td {
    padding: 0.6rem 1rem;
    border-bottom: 1px dashed var(--border-dark);
    vertical-align: middle;
}

tr:last-child td {
    border-bottom: none;
}

tbody tr {
    transition: background-color var(--transition);
}

/* Table links */
table td a {
    font-weight: 600;
}

/* Monospace data in tables */
.tasks-table td:first-child {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    font-weight: 600;
}

.tasks-table td:first-child a {
    color: var(--brand);
}

.tasks-table td:nth-child(3) {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    font-weight: 600;
}

.submissions-table td:first-child {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
}

.testcases-table td:first-child {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    font-weight: 400;
}

.testcases-table td:nth-child(3),
.testcases-table td:nth-child(4),
.testcases-table td:nth-child(5) {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
}

.subtasks-table td:first-child {
    font-family: var(--font-mono);
    font-weight: 600;
}

.subtasks-table td:nth-child(2) {
    font-family: var(--font-mono);
    font-weight: 600;
}

/* Tags */
.tag {
    display: inline-flex;
    align-items: center;
    vertical-align: middle;
    background: var(--stone-100);
    color: var(--stone-700);
    border-radius: var(--radius);
    font-size: 0.7rem;
    font-weight: 600;
    margin: 0.1rem 0.15rem;
    overflow: hidden;
    border: 1px solid var(--stone-600);
    line-height: 1;
}

.tag-category {
    background: var(--stone-600);
    color: white;
    padding: 0.2rem 0.375rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    font-size: 0.625rem;
    margin-right: 0.375rem;
}

/* Tag without category (no colon) */
.tag:not(:has(.tag-category)) {
    padding: 0.2rem 0.5rem;
}

/* Tag with category */
.tag:has(.tag-category) {
    padding-right: 0.375rem;
}

.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
    margin-bottom: 1rem;
}

/* Search bar */
.search-bar {
    margin-bottom: 1.25rem;
}

.search-bar input[type="text"],
.search-bar .autocomplete input {
    display: block;
    width: 100%;
    padding: 0.5rem 0.75rem;
    font-family: var(--font-sans);
    font-size: 0.875rem;
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    background-color: var(--bg-card);
    color: var(--text);
    transition: border-color var(--transition), box-shadow var(--transition);
    margin-bottom: 0.625rem;
}

.search-bar input[type="text"]:focus,
.search-bar .autocomplete input:focus {
    outline: none;
    border-color: var(--brand);
    box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.12);
}

.filter-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: center;
}

.filter-row select {
    padding: 0.375rem 0.5rem;
    font-family: var(--font-sans);
    font-size: 0.8125rem;
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    background-color: var(--bg-card);
    color: var(--text);
    cursor: pointer;
    transition: border-color var(--transition);
}

.filter-row select:focus {
    outline: none;
    border-color: var(--brand);
}

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.375rem;
    padding: 0.5rem 1.125rem;
    font-family: var(--font-sans);
    font-size: 0.875rem;
    font-weight: 600;
    border: 1px solid transparent;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    line-height: 1.5;
    white-space: nowrap;
}

.btn:hover {
    text-decoration: none;
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.btn:active {
    transform: translateY(0);
    box-shadow: none;
}

.btn-primary {
    background-color: var(--brand);
    color: #fff;
    border-color: var(--brand);
}

.btn-primary:hover {
    background-color: var(--brand-hover);
    border-color: var(--brand-hover);
    color: #fff;
}

.btn-secondary {
    background-color: var(--bg-card);
    color: var(--text);
    border-color: var(--border);
}

.btn-secondary:hover {
    background-color: var(--stone-100);
    border-color: var(--stone-300);
    color: var(--text);
}

.btn-danger {
    background-color: var(--danger);
    color: #fff;
    border-color: var(--danger);
}

.btn-danger:hover {
    background-color: #b91c1c;
    border-color: #b91c1c;
    color: #fff;
}

.btn-sm {
    padding: 0.3rem 0.75rem;
    font-size: 0.8125rem;
    border-radius: var(--radius);
}

.btn-ghost {
    background: transparent;
    color: var(--brand);
    border-color: transparent;
    padding: 0.375rem 0.75rem;
}

.btn-ghost:hover {
    background: var(--brand-50);
    box-shadow: none;
    transform: none;
}

/* === Forms === */
.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 600;
    margin-bottom: 0.375rem;
    color: var(--stone-700);
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="number"],
.form-group select {
    display: block;
    width: 100%;
    padding: 0.5rem 0.75rem;
    font-family: var(--font-sans);
    font-size: 0.875rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background-color: var(--bg-card);
    color: var(--text);
    transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--brand);
    box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.12);
}

.form-group input[type="file"] {
    font-family: var(--font-sans);
    font-size: 0.875rem;
    color: var(--text-muted);
}

.form-group input[type="file"]::file-selector-button {
    font-family: var(--font-sans);
    font-size: 0.8125rem;
    font-weight: 600;
    padding: 0.375rem 0.875rem;
    margin-right: 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--stone-100);
    color: var(--text);
    cursor: pointer;
    transition: all var(--transition);
}

.form-group input[type="file"]::file-selector-button:hover {
    background: var(--stone-200);
}

/* === Code Editor === */
.code-editor {
    display: block;
    width: 100%;
    padding: 1rem 1.25rem;
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    background-color: var(--code-bg);
    color: var(--code-text);
    border: 1px solid var(--stone-800);
    border-radius: var(--radius);
    resize: vertical;
    line-height: 1.65;
    tab-size: 4;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.code-editor:focus {
    outline: none;
    border-color: var(--brand);
    box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.15);
}


/* === Auth Form === */
.auth-form {
    max-width: 420px;
    margin: 3rem auto;
    background: var(--bg-card);
    padding: 2rem 2rem;
    border-radius: var(--radius-xl);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
}

.auth-form h1 {
    margin-bottom: 1.5rem;
    text-align: center;
    font-size: 1.5rem;
}

.auth-form .btn {
    width: 100%;
    text-align: center;
    padding: 0.625rem;
    font-size: 0.9375rem;
    margin-top: 0.5rem;
}

.auth-form p {
    margin-top: 1.25rem;
    text-align: center;
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* === Error message === */
.error {
    color: var(--danger-text);
    font-size: 0.8125rem;
    margin: 0.5rem 0;
    padding: 0.5rem 0.75rem;
    background-color: var(--danger-bg);
    border: 1px solid #fecaca;
    border-radius: var(--radius);
}

/* === Hero section === */
.hero {
    text-align: center;
    padding: 5rem 2rem 4rem;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle, var(--stone-300) 1px, transparent 1px);
    background-size: 24px 24px;
    opacity: 0.5;
    pointer-events: none;
}

.hero>* {
    position: relative;
}

.hero h1 {
    font-size: 2.75rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: 0.75rem;
    animation: fadeInUp 0.5s ease;
}

.hero h1 .brand-text {
    color: var(--brand);
}

.hero p {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
    max-width: 480px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.7;
    animation: fadeInUp 0.5s ease 0.1s both;
}

.hero-actions {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    animation: fadeInUp 0.5s ease 0.2s both;
}

.hero-actions .btn {
    padding: 0.75rem 2rem;
    font-size: 0.9375rem;
}

/* === Compilation output === */
.compilation-output {
    background-color: var(--code-bg);
    color: var(--code-text);
    padding: 1rem 1.25rem;
    border-radius: var(--radius);
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    overflow-x: auto;
    white-space: pre-wrap;
    word-break: break-word;
    max-height: 400px;
    overflow-y: auto;
    line-height: 1.6;
    border: 1px solid var(--stone-800);
}

/* === Drag & drop upload === */
.dropzone {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    padding: 1.75rem 1.25rem;
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    background: var(--stone-50);
    color: var(--text-muted);
    cursor: pointer;
    text-align: center;
    transition: border-color var(--transition), background var(--transition), transform var(--transition);
}
.dropzone:hover {
    border-color: var(--brand);
}
.dropzone.is-over {
    border-color: var(--brand);
    background: var(--brand-light);
    color: var(--brand-hover);
    transform: scale(1.01);
}
.dropzone.has-file {
    border-style: solid;
    border-color: var(--brand);
    background: var(--bg-card);
    color: var(--text);
}
.dropzone__icon {
    font-size: 1.5rem;
    line-height: 1;
    color: var(--brand);
}
.dropzone__text {
    font-size: 0.9rem;
}
.dropzone__text strong {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    word-break: break-all;
}
.dropzone__link {
    color: var(--brand);
    font-weight: 600;
    text-decoration: underline;
}
.dropzone__hint {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.import-form {
    margin: 0 0 1.5rem;
}
.import-form__actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-top: 0.85rem;
}
.import-form__status {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* === Format documentation (admin import) === */
.fmt-section {
    margin: 1.25rem 0 1.75rem;
}
.fmt-section > h3 {
    font-size: 0.95rem;
    margin: 0 0 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.fmt-section > p {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin: 0 0 0.75rem;
}

.field-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}
.field-table th {
    text-align: left;
    font-weight: 600;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    padding: 0.6rem 0.9rem;
    background: var(--stone-50);
    border-bottom: 1px solid var(--border);
}
.field-table td {
    padding: 0.6rem 0.9rem;
    border-bottom: 1px solid var(--stone-200, #e7e5e4);
    vertical-align: top;
}
.field-table tr:last-child td {
    border-bottom: none;
}
.field-table td:first-child {
    white-space: nowrap;
}
.field-table code {
    font-family: var(--font-mono);
    font-size: 0.8rem;
}
.field-table .desc {
    color: var(--text-muted);
    line-height: 1.5;
}
.type-tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    padding: 0.1rem 0.45rem;
    border-radius: var(--radius-sm);
    background: var(--brand-light);
    color: var(--brand-hover);
    white-space: nowrap;
}
.badge-req,
.badge-opt {
    display: inline-block;
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    padding: 0.1rem 0.4rem;
    border-radius: 999px;
    margin-left: 0.4rem;
    vertical-align: middle;
}
.badge-req {
    background: var(--warning-bg);
    color: var(--warning-text);
}
.badge-opt {
    background: var(--stone-100, #f5f5f4);
    color: var(--text-muted);
}

.file-tree {
    list-style: none;
    margin: 0;
    padding: 0;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}
.file-tree__item {
    display: grid;
    grid-template-columns: minmax(8rem, max-content) auto 1fr;
    gap: 0.6rem;
    align-items: baseline;
    padding: 0.55rem 0.9rem;
    border-bottom: 1px solid var(--stone-200, #e7e5e4);
    background: var(--bg-card);
}
.file-tree__item:last-child {
    border-bottom: none;
}
.file-tree__name {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    font-weight: 600;
}
.file-tree__name.is-dir {
    color: var(--brand);
}
.file-tree__note {
    color: var(--text-muted);
    font-size: 0.82rem;
    line-height: 1.5;
}

.code-card {
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--stone-800);
    box-shadow: var(--shadow-sm);
}
.code-card__bar {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.9rem;
    background: #1c1917;
    border-bottom: 1px solid var(--stone-800);
}
.code-card__dot {
    width: 0.7rem;
    height: 0.7rem;
    border-radius: 50%;
    background: var(--brand);
    box-shadow: 1.1rem 0 0 #f5b942, 2.2rem 0 0 #e0564f;
    flex: none;
}
.code-card__name {
    margin-left: 1.6rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--stone-400);
}
.code-card__body {
    background-color: var(--code-bg);
    color: var(--code-text);
    padding: 1rem 1.25rem;
    margin: 0;
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    overflow-x: auto;
    white-space: pre;
    line-height: 1.6;
}

/* === Status badges === */
#sub-status {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    font-size: 0.8125rem;
    font-weight: 600;
    font-family: var(--font-mono);
    background-color: var(--stone-100);
    color: var(--stone-600);
    border: 1px solid var(--border);
}

#sub-status.is-scored {
    background: none;
    border: none;
    padding: 0;
}

/* Pulsing dot for pending status */
@keyframes pulse-dot {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.4;
    }
}

.status-dot {
    display: inline-block;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--stone-400);
}

.status-dot.pending {
    background: var(--warning);
    animation: pulse-dot 1.5s ease-in-out infinite;
}

.status-dot.scored {
    background: var(--success);
}

.status-dot.compiling,
.status-dot.judging {
    background: var(--brand);
    animation: pulse-dot 1s ease-in-out infinite;
}

/* === Verdict colors === */
.verdict-ac {
    color: var(--success-text);
    font-weight: 600;
}

.verdict-wa {
    color: var(--danger-text);
    font-weight: 600;
}

.verdict-partial {
    color: var(--warning-text);
    font-weight: 600;
}

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

/* Row coloring */
tr.row-ac td {
    background-color: var(--success-bg);
}

tr.row-wa td {
    background-color: var(--danger-bg);
}

tr.row-partial td {
    background-color: var(--warning-bg);
}

/* Score badges */
.score-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.875rem;
    border-radius: 999px;
    font-weight: 600;
    font-size: 1.05rem;
    font-family: var(--font-mono);
}

.score-badge.score-ac {
    background-color: var(--success-bg);
    color: var(--success-text);
}

.score-badge.score-wa {
    background-color: var(--danger-bg);
    color: var(--danger-text);
}

.score-badge.score-partial {
    background-color: var(--warning-bg);
    color: var(--warning-text);
}

/* === Solvers === */
.solvers-details {
    margin: 1.5rem 0;
}

.solvers-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
}

.solver-chip {
    display: inline-flex;
    align-items: center;
    padding: 0.2rem 0.65rem;
    border-radius: 999px;
    font-size: 0.8125rem;
    font-weight: 500;
    text-decoration: none;
    transition: opacity 0.1s;
}

.solver-chip:hover {
    opacity: 0.8;
    text-decoration: none;
}

.solver-chip.score-ac {
    background-color: var(--success-bg);
    color: var(--success-text);
}

.solver-chip.score-partial {
    background-color: var(--warning-bg);
    color: var(--warning-text);
}

.solver-chip.score-wa {
    background-color: var(--danger-bg);
    color: var(--danger-text);
}

/* === Search form === */
.search-form {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
    flex-wrap: wrap;
}

.search-form input {
    padding: 0.375rem 0.625rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-family: var(--font-sans);
    font-size: 0.875rem;
    background: var(--bg-card);
    color: var(--text);
    min-width: 140px;
}

/* === Autocomplete === */
.autocomplete {
    position: relative;
}

.autocomplete-list {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin: 0;
    padding: 0;
    list-style: none;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    z-index: 100;
    max-height: 200px;
    overflow-y: auto;
}

.autocomplete-list li {
    padding: 0.375rem 0.625rem;
    cursor: pointer;
    font-size: 0.875rem;
}

.autocomplete-list li:hover,
.autocomplete-list li.active {
    background: var(--stone-100);
}

/* === Pagination === */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-top: 1rem;
}

.pagination-info {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

/* === Submit status === */
#submit-status {
    display: inline-block;
    margin-left: 0.75rem;
    font-size: 0.8125rem;
    color: var(--text-muted);
    font-style: italic;
}

/* === Task metadata === */
.task-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    padding: 1rem 1.25rem;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-sm);
}

.task-meta-item {
    display: flex;
    flex-direction: column;
    gap: 0.125rem;
}

.task-meta-label {
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
}

.task-meta-value {
    font-family: var(--font-mono);
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text);
}


/* === Statement iframe === */
iframe {
    display: block;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    margin-bottom: 1rem;
    background: var(--bg-card);
}

/* === Sections === */
section {
    margin-top: 2rem;
}

section+section {
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-light);
}

/* === Attachment cards === */
.attachment-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.attachment-card {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    padding: 0.75rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    color: var(--text);
    text-decoration: none;
    transition: border-color var(--transition), box-shadow var(--transition);
    min-width: 180px;
}

.attachment-card:hover {
    border-color: var(--brand);
    box-shadow: var(--shadow);
    color: var(--text);
    text-decoration: none;
}

.attachment-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--brand-light);
    color: var(--brand);
    border-radius: var(--radius);
    font-size: 0.875rem;
    font-weight: 600;
    flex-shrink: 0;
}

.attachment-icon img {
    width: 20px;
    height: 20px;
    object-fit: contain;
}

.attachment-name {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    font-weight: 600;
    word-break: break-all;
}

.input-zip-icon {
    background: var(--warning-bg);
    color: var(--warning);
}

/* === Source download === */
#source-download .btn {
    margin-top: 0.5rem;
}

/* === Admin panel === */
/* Admin message */
#msg {
    font-size: 0.875rem;
    padding: 0;
    margin-bottom: 0.75rem;
    font-weight: 400;
    min-height: 1.25rem;
}

/* === Scoreboard === */
.scoreboard-table td:first-child {
    font-family: var(--font-mono);
    font-weight: 600;
    font-size: 0.8125rem;
    color: var(--text-muted);
    width: 3rem;
    text-align: center;
    padding: 0;
}

.scoreboard-table td:nth-child(2) {
    font-weight: 600;
}

.scoreboard-table td:nth-child(3) {
    font-family: var(--font-mono);
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--brand);
}

/* Medal rows */
.scoreboard-table tr.medal-gold td {
    background-color: #fef9c3;
}

.scoreboard-table tr.medal-gold td:first-child {
    color: #a16207;
    font-weight: 800;
}

.scoreboard-table tr.medal-gold td:nth-child(3) {
    color: #a16207;
}

.scoreboard-table tr.medal-silver td {
    background-color: #f1f5f9;
}

.scoreboard-table tr.medal-silver td:first-child {
    color: #475569;
    font-weight: 800;
}

.scoreboard-table tr.medal-silver td:nth-child(3) {
    color: #475569;
}

.scoreboard-table tr.medal-bronze td {
    background-color: #fef3e2;
}

.scoreboard-table tr.medal-bronze td:first-child {
    color: #9a3412;
    font-weight: 800;
}

.scoreboard-table tr.medal-bronze td:nth-child(3) {
    color: #9a3412;
}

/* Highlight current user — animated shimmer across the whole row.
   The shimmer highlight is always partially visible so the row
   is distinguishable at any point in time, even when scrolling. */
@keyframes scoreboard-shimmer {
    0% {
        background-position: 0% 0;
    }

    50% {
        background-position: 100% 0;
    }

    100% {
        background-position: 0% 0;
    }
}

.scoreboard-table tr.scoreboard-me {
    background-size: 300% 100%;
    animation: scoreboard-shimmer 3s ease-in-out infinite;
}

.scoreboard-table tr.scoreboard-me td {
    background: transparent;
}

.scoreboard-table tr.scoreboard-me td:nth-child(2) {
    font-weight: 700;
}

/* Medal-specific shimmer tints */
.scoreboard-table tr.medal-gold.scoreboard-me {
    background-image: linear-gradient(110deg,
            #fef9c3 0%, #fef08a 50%, #fef9c3 100%);
}

.scoreboard-table tr.medal-silver.scoreboard-me {
    background-image: linear-gradient(110deg,
            #f1f5f9 0%, #cbd5e1 50%, #f1f5f9 100%);
}

.scoreboard-table tr.medal-bronze.scoreboard-me {
    background-image: linear-gradient(110deg,
            #fef3e2 0%, #fed7aa 50%, #fef3e2 100%);
}

/* No-medal shimmer */
.scoreboard-table tr.scoreboard-me:not(.medal-gold):not(.medal-silver):not(.medal-bronze) {
    background-image: linear-gradient(110deg,
            #ffffff 0%, #ccfbf1 50%, #ffffff 100%);
}

/* === Submission detail === */
.submission-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.submission-header h1 {
    margin-bottom: 0;
    font-family: var(--font-mono);
}

/* === Admin tabs === */
.admin-tabs {
    display: flex;
    gap: 0;
    border-bottom: 2px solid var(--border);
    margin-bottom: 1.5rem;
    overflow-x: auto;
}

.admin-tab {
    padding: 0.6rem 1.2rem;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    white-space: nowrap;
    transition: color 0.15s, border-color 0.15s;
}

.admin-tab:hover {
    color: var(--text);
}

.admin-tab.active {
    color: var(--brand);
    border-bottom-color: var(--brand);
}

.admin-tab-content {
    min-height: 200px;
}

/* === Danger zone === */
.danger-zone {
    margin-top: 2rem;
    padding: 1.25rem;
    border: 1px solid #fecaca;
    border-radius: var(--radius-lg);
    background: #fef2f2;
}

.danger-zone h2 {
    margin-top: 0;
    color: var(--danger);
    font-size: 1rem;
}

/* === Attachments === */
ul {
    list-style: none;
    padding: 0;
}

ul li {
    padding: 0.375rem 0;
}

ul li a {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.875rem;
    font-weight: 400;
}

ul li a::before {
    content: '↓';
    font-size: 0.75rem;
    opacity: 0.5;
}

/* === Empty state === */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-muted);
    font-size: 0.9375rem;
}

/* === Footer === */
.footer {
    text-align: center;
    padding: 2rem 1.5rem;
    margin-top: 2rem;
    color: var(--text-muted);
    font-size: 0.75rem;
    /* border-top: 1px solid var(--border-light); */
}

.footer a {
    color: var(--text-muted);
    text-decoration: underline;
}

.license-text {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: 6px;
    padding: 1rem 1.25rem;
    font-size: 0.8rem;
    overflow-x: auto;
    white-space: pre-wrap;
    word-wrap: break-word;
}

/* === Hamburger toggle === */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    margin-right: -0.5rem;
}

.nav-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--stone-300);
    border-radius: 1px;
    transition: all var(--transition);
}

/* === Responsive === */
@media (max-width: 768px) {
    .scoreboard-table th {
        padding-right: 0;
        padding-left: 0;
    }

    .scoreboard-table td {
        padding-right: 0;
        padding-left: 0;
    }

    .scoreboard-table th:first-child {
        text-align: center;
        width: 2rem;
    }

    .scoreboard-table th:last-child {
        text-align: center;
        width: 4rem;
    }

    .scoreboard-table td:last-child {
        text-align: center;
    }

    .navbar {
        padding: 0 1rem;
        min-height: 48px;
        height: auto;
        flex-wrap: wrap;
    }

    .brand {
        font-size: 1rem;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-links {
        display: none;
        width: 100%;
        flex-direction: column;
        gap: 0;
        padding: 0.5rem 0 0.75rem;
        border-top: 1px solid rgba(255, 255, 255, 0.08);
    }

    .nav-links.open {
        display: flex;
    }

    .nav-links a {
        padding: 0.5rem 0.25rem;
        font-size: 0.875rem;
    }

    .nav-divider {
        display: none;
    }

    .container {
        padding: 1.25rem 1rem;
    }

    h1 {
        font-size: 1.375rem;
    }

    .hero {
        padding: 3rem 1rem;
    }

    .hero h1 {
        font-size: 1.75rem;
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .hero-actions .btn {
        width: 100%;
        max-width: 280px;
    }

    .auth-form {
        margin: 1.5rem auto;
        padding: 1.5rem;
    }

    .task-meta {
        gap: 1rem;
    }

    iframe {
        height: 400px;
    }

    .cardable tbody tr:first-child {
        border-top-right-radius: var(--radius-lg);
        border-top-left-radius: var(--radius-lg);
        border-top: 2px solid var(--border-dark);
    }

    .cardable tbody tr:last-child {
        border-bottom-right-radius: var(--radius-lg);
        border-bottom-left-radius: var(--radius-lg);
        border-bottom: 2px solid var(--border-dark);
    }

    .cardable tr {
        background: var(--bg-card);
        border-left: 2px solid var(--border-dark);
        border-right: 2px solid var(--border-dark);
        border-top: 1px dashed var(--border-dark);
        /* border-radius: var(--radius-lg); */
        padding: 0.75rem 1rem;
        /* margin-bottom: 0.625rem; */
        /* box-shadow: var(--shadow-sm); */
    }

    /* Testcases table → card layout */
    table.cardable thead {
        display: none;
    }

    table.cardable,
    .cardable tbody,
    .cardable tr,
    .cardable td {
        display: block;
    }

    table.cardable {
        border: none;
        background: none;
        box-shadow: none;
    }

    .cardable td {
        padding: 0.2rem 0;
        border-bottom: none;
        font-size: 0.875rem;
    }

    .cardable td::before {
        content: attr(data-label);
        display: inline-block;
        width: 4.8rem;
        font-size: 0.6875rem !important;
        font-weight: 600;
        font-family: var(--font-mono);
        text-transform: uppercase;
        letter-spacing: 0.04em;
        color: var(--text-muted);
        vertical-align: middle;
    }

    .tasks-table td::before {
        width: 3.8rem;
    }

    .submissions-table td::before {
        width: 4.2rem;
    }


    .cardable td.tags-cell::before {
        content: none !important;
    }

    /* Card-layout row coloring: apply background on the tr (the card),
       not individual tds, so color fills the entire card including padding. */
    table.cardable tr.row-ac {
        background-color: var(--success-bg);
    }

    table.cardable tr.row-wa {
        background-color: var(--danger-bg);
    }

    table.cardable tr.row-partial {
        background-color: var(--warning-bg);
    }

    table.cardable tr.row-ac td,
    table.cardable tr.row-wa td,
    table.cardable tr.row-partial td {
        background-color: transparent;
    }

    /* Filter row stacking */
    .filter-row {
        flex-direction: column;
    }

    .filter-row select {
        width: 100%;
    }
}

#tasks-body tr {
    cursor: pointer;
}