custom_css = """
:root, [data-theme="light"] {
  --f1-text: #111827;
  --f1-subtle: #6b7280;
  --f1-border: #e5e7eb;
  --f1-bg: #ffffff;
  --f1-bg-muted: #f9fafb;

  /* Disable Gradio block chrome that was bleeding into the Examples switcher */
  --block-border-color: transparent !important;
  --background-fill-primary: transparent !important;
}

/* Readable width everywhere */
.f1-container { max-width: 800px; margin: 0 auto; padding: 0 16px; }
.markdown-text { font-size: 16px !important; max-width: 800px; margin: 0 auto; }
#what-is-tab { max-width: 800px; margin-left: auto; margin-right: auto; }
#f1-examples { max-width: 800px; margin: 0 auto; }

/* Body text */
.f1-p, .f1-li {
  line-height: 1.75;
  color: #374151;
  text-wrap: pretty;
  overflow-wrap: break-word;
  hyphens: auto;
}

/* Headings */
.f1-h1 { font-weight: 700; font-size: 2.25rem; line-height: 2.5rem; color: var(--f1-text); text-align: center; margin-bottom: 1.25rem !important; }
.f1-h2 {
  font-weight: 700;
  border-bottom: 1px solid var(--f1-border);
  padding-bottom: 0.45rem;
  margin-top: 1.75rem;
  margin-bottom: 0.9rem;
  color: var(--f1-text);
  font-size: 1.5rem;
  line-height: 2rem;
}

/* Links */
.f1-a { color: #2563eb; text-decoration: none; font-weight: 500; }
.f1-a:hover { text-decoration: underline; }

/* Captions, problem name */
.f1-figcaption { margin-top: 0.5rem; font-size: 0.875rem; color: #111827; text-align: center; }
.f1-problem-name { font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace; font-weight: 600; text-align: center; }

/* ===== Clean "table" (equal column widths per column; compact first two, flexible third) ===== */
.f1-grid-wrap { text-align: center; margin: 10px auto 8px auto; }
.f1-grid-table {
  display: inline-grid;                                   /* center + shrink-to-fit */
  grid-template-columns: max-content max-content minmax(360px, auto);
  border: 1px solid var(--f1-border);                     /* full border */
  background: var(--f1-bg);
  border-radius: 8px;
  overflow: hidden;
}
.f1-grid-row { display: contents; }                       /* rows share the same columns */
.f1-grid-cell {
  padding: 8px 12px;
  text-align: left;
  border-left: 1px solid var(--f1-border);
  border-top: 1px solid var(--f1-border);
}
.f1-grid-cell:nth-child(3n+1) { border-left: none; }      /* first column cells: no left border */
.f1-grid-head .f1-grid-cell {
  font-weight: 600;
  text-align: center;
  border-top: none;                                       /* top edge of the grid */
}

/* ===== Examples block ===== */
#f1-examples {
  background: var(--f1-bg-muted);                         /* #f9fafb */
  border: 1px solid var(--f1-border);
  border-radius: 10px;
  box-shadow: 0 1px 2px rgba(0,0,0,0.04);
  margin-bottom: 12px;
}
.f1-tabs-body { padding-top: 12px; text-align: center; }
.f1-examples-chip {
  display: inline-block;
  background: #e5e7eb;                                    /* slightly darker than #f9fafb */
  color: #111827;
  padding: 6px 12px;
  border-radius: 999px;
  font-weight: 700;
}

/* Problem content: consistent background + padding + spacing above the tabs */
#f1-examples .f1-problem-markdown .markdown {
  background: var(--f1-bg-muted);
  border: 1px solid var(--f1-border);
  border-radius: 8px;
  padding: 18px;
  margin: 10px 14px 12px 14px;                            /* bottom margin creates padding before tabs */
}

/* Pills (Radio) — hide bullets, light gray inactive, darker selected */
#f1-example-radio { border-top: 1px solid var(--f1-border); padding: 8px 10px 10px 10px; margin: 0 8px 8px; }
#f1-example-radio input[type="radio"] { display: none; }
#f1-example-radio .wrap { display: flex; gap: 8px; flex-wrap: wrap; justify-content: flex-start; }
#f1-example-radio label {
  border: 1px solid var(--f1-border);
  border-radius: 999px;
  padding: 6px 12px;
  cursor: pointer;
  background: #f3f4f6;                                    /* inactive pills */
}
#f1-example-radio input[type="radio"]:checked + span {
  background: #e5e7eb;                                    /* active pill */
  border-color: var(--f1-border);
  border-radius: 999px;
  padding: 6px 12px;
}

/* Gradio video styling (centered, rounded, subtle shadow) */
.f1-video video { width: 100%; max-width: 42rem; display: block; margin: 0 auto; border-radius: 12px; box-shadow: 0 2px 8px rgba(0,0,0,0.08); }

/* Leaderboard: cap width at 800px and center; keep your chain rule */
#formulaone-leaderboard-tab-table { max-width: 800px; margin-left: auto; margin-right: auto; }
#formulaone-leaderboard-tab-table .column .row .column { min-width: 80% !important; }  /* exact chain rule */
#formulaone-leaderboard-tab-table .row, #formulaone-leaderboard-tab-table .column { width: 100% !important; max-width: 100% !important; }
#formulaone-leaderboard-tab-table [data-testid="dropdown"], #formulaone-leaderboard-tab-table input[type="text"] { width: 100% !important; }

/* Login button: force light */
#hf-login-btn, #hf-login-btn button, button[data-testid="login-button"], [data-testid="login-button"] button, div[data-testid="login-button"] > button {
  background: #ffffff !important;
  color: #1f2937 !important;
  border: 1px solid var(--f1-border) !important;
  box-shadow: 0 1px 2px 0 rgb(0 0 0 / 0.04) !important;
}
#hf-login-btn:hover, #hf-login-btn button:hover, button[data-testid="login-button"]:hover, [data-testid="login-button"] button:hover, div[data-testid="login-button"] > button:hover { background: #f9fafb !important; }
"""

get_window_url_params = """
    function(url_params) {
        const params = new URLSearchParams(window.location.search);
        url_params = Object.fromEntries(params);
        return url_params;
    }
    """