:root {
  --fg: #1a1a1a;
  --muted: #6b7280;
  --bg: #fafafa;
  --card: #ffffff;
  --border: #e5e7eb;
  --accent: #2563eb;
  --accent-fg: #ffffff;
  --error-bg: #fef2f2;
  --error-border: #fecaca;
  --error-fg: #991b1b;
  --calc-bg: #fffbeb;
  --mono: ui-monospace, "SF Mono", Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }

body {
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: var(--fg);
  background: var(--bg);
  margin: 0;
  padding: 24px;
  max-width: 1100px;
  margin: 0 auto;
}

header h1 { margin: 0 0 4px; font-size: 24px; }
header .tagline { color: var(--muted); margin: 0 0 24px; }
header .author { color: var(--fg); margin: 0 0 2px; font-size: 14px; }

.additional-info pre.user-notes {
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 12px 14px;
  white-space: pre-wrap;
  word-break: break-word;
  font: 14px/1.5 inherit;
  color: var(--fg);
  margin: 0;
}
header .brand { color: inherit; text-decoration: none; }
header .brand:hover { text-decoration: underline; }

.topbar { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.user-nav { display: flex; align-items: center; gap: 12px; font-size: 14px; }
.user-nav a { color: var(--accent); text-decoration: none; }
.user-nav a.primary {
  background: var(--accent); color: var(--accent-fg);
  padding: 4px 10px; border-radius: 6px;
}
.user-nav a:hover { text-decoration: underline; }
.user-nav a.primary:hover { text-decoration: none; filter: brightness(1.1); }
.user-nav .badge.paid { background: #dcfce7; color: #166534; }
.user-nav .badge-link { text-decoration: none; }
.user-nav .badge-link:hover .badge { filter: brightness(0.95); }
.user-nav form.inline { display: inline; margin: 0; }
button.link {
  background: transparent; border: 0; color: var(--accent);
  padding: 0; cursor: pointer; font: inherit; text-decoration: none;
}
button.link:hover { text-decoration: underline; }

/* auth forms */
.auth-form { max-width: 420px; }
.auth-form h2 { margin: 0 0 12px; font-size: 20px; }
.auth-form .field { display: flex; flex-direction: column; gap: 4px; margin-bottom: 12px; }
.auth-form label { font-size: 13px; font-weight: 500; color: var(--muted); }
.auth-form input[type=email], .auth-form input[type=password] {
  font: inherit; padding: 6px 10px;
  border: 1px solid var(--border); border-radius: 6px;
  background: white;
}
.auth-form input:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
.auth-form .error { margin-bottom: 12px; }

.upload {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 24px;
}

.upload form { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.upload label { font-weight: 500; }
.upload input[type=file] { flex: 1; min-width: 240px; }

/* ---- HTML-download dialog ---- */
dialog#html-dialog {
  /* High specificity (id selector) so nothing else can override these
     dimensions accidentally. */
  width: 90vw;
  max-width: 1400px;
}
dialog {
  padding: 0;
  border: 0;
  border-radius: 12px;
  background: var(--card);
  color: var(--fg);
  overflow: hidden;
  box-shadow:
    0 18px 40px rgba(15, 23, 42, 0.22),
    0 2px 6px rgba(15, 23, 42, 0.08);
  /* Entry animation: fade + slight scale-up. `overlay` and `display` in
     the transition list (with allow-discrete) let us animate the
     toggle of the dialog's top-layer state -- required to fade out
     instead of snapping out on close. */
  opacity: 0;
  transform: scale(0.96);
  transition:
    opacity 0.18s ease,
    transform 0.18s ease,
    overlay 0.18s ease allow-discrete,
    display 0.18s ease allow-discrete;
}
dialog[open] { opacity: 1; transform: scale(1); }
@starting-style {
  dialog[open] { opacity: 0; transform: scale(0.96); }
}
dialog::backdrop {
  background: rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(2px);
}

.dialog-title {
  margin: 0;
  padding: 18px 22px 14px;
  font-size: 16px;
  font-weight: 600;
  color: var(--fg);
  border-bottom: 1px solid var(--border);
}
.dialog-title label { cursor: pointer; }

dialog#html-dialog textarea {
  display: block;
  width: 100%;
  font: inherit;
  padding: 14px 18px;
  border: 0;
  border-radius: 0;
  background: white;
  resize: vertical;
  min-height: 480px;
  box-sizing: border-box;
  margin: 0;
}
dialog textarea:focus { outline: 2px solid var(--accent); outline-offset: -1px; }

.dialog-footer {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding: 12px 22px;
  background: var(--bg);
  border-top: 1px solid var(--border);
}
.dialog-cancel {
  background: transparent;
  color: var(--fg);
  border: 1px solid transparent;
  font-weight: 500;
}
.dialog-cancel:hover { background: var(--card); border-color: var(--border); filter: none; }
.dialog-confirm { font-weight: 500; }

button {
  background: var(--accent);
  color: var(--accent-fg);
  border: 0;
  padding: 8px 16px;
  border-radius: 6px;
  font: inherit;
  cursor: pointer;
}
button:hover { filter: brightness(1.1); }
button.secondary {
  background: var(--card);
  color: var(--fg);
  border: 1px solid var(--border);
}
button.secondary:hover { background: var(--bg); filter: none; }

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

.hint { color: var(--muted); font-size: 13px; margin: 12px 0 0; }

.htmx-indicator { display: none; color: var(--muted); }
.htmx-request .htmx-indicator { display: inline; }
.htmx-request button { opacity: 0.6; pointer-events: none; }

.block {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px 20px;
  margin-bottom: 16px;
}
.block h2 { margin: 0 0 12px; font-size: 17px; }
/* h2 inside a section's summary: inline with the triangle, no extra margin */
.block > details > summary { list-style-position: outside; }
.block > details > summary h2 { display: inline; margin: 0; }
.block > details[open] > summary h2 { margin-bottom: 0; }
.block > details[open] > summary { margin-bottom: 12px; }
.count {
  display: inline-block;
  background: var(--border);
  color: var(--muted);
  font-size: 12px;
  font-weight: 500;
  padding: 1px 8px;
  border-radius: 999px;
  margin-left: 4px;
  vertical-align: middle;
}
.muted { color: var(--muted); font-weight: normal; }
.empty { color: var(--muted); font-style: italic; margin: 0; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 6px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { font-weight: 600; background: var(--bg); }
tr.calc { background: var(--calc-bg); }

details summary { cursor: pointer; padding: 4px 0; }
details[open] summary { margin-bottom: 8px; }

.sources { list-style: none; padding: 0; margin: 0; }
.sources > li { border-bottom: 1px solid var(--border); padding: 4px 0; }
.sources > li:last-child { border-bottom: 0; }
.sources h4 { margin: 12px 0 4px; font-size: 13px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em; }

pre.code, pre.steps {
  background: #f4f4f5;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 8px 10px;
  font: 13px/1.4 var(--mono);
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0;
}
pre.code.inline { background: transparent; border: 0; padding: 0; }

.error {
  background: var(--error-bg);
  border: 1px solid var(--error-border);
  color: var(--error-fg);
  padding: 12px 16px;
  border-radius: 8px;
}
.error p { margin: 4px 0 0; }

/* ---- quota / paywall / upgrade UI ---- */
.quota-hint {
  font-size: 13px;
  color: var(--muted);
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 10px;
  margin: 0 0 12px;
}
.quota-hint strong { color: var(--fg); }

.paywall {
  background: linear-gradient(135deg, #eff6ff 0%, #fef3c7 100%);
  border: 1px dashed #93c5fd;
}
.paywall h2 { margin: 8px 0; }
.paywall .badge.paid { float: right; }

.button-link {
  display: inline-block;
  background: var(--accent);
  color: var(--accent-fg);
  padding: 8px 16px;
  border-radius: 6px;
  text-decoration: none;
}
.button-link:hover { filter: brightness(1.1); text-decoration: none; }
.button-link.secondary {
  background: transparent;
  color: var(--accent);
  border: 1px dashed var(--accent);
}
.button-link.secondary:hover { background: #eff6ff; filter: none; }

.over-quota {
  background: var(--error-bg);
  border-color: var(--error-border);
}
.over-quota h2 { color: var(--error-fg); margin-top: 0; }

/* ---- summary strip ---- */
.summary { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 24px; }
.summary h2 { margin: 0; font-size: 17px; }
.stat { color: var(--muted); font-size: 14px; }
.stat strong { color: var(--fg); font-size: 18px; margin-right: 4px; }
.stat.warn strong { color: #b45309; }

/* ---- kind badges (M / C / Cc) ---- */
.kind {
  display: inline-block;
  width: 18px; height: 18px; line-height: 18px;
  text-align: center;
  font-size: 11px; font-weight: 600;
  border-radius: 4px;
  margin-right: 6px;
  color: white;
  vertical-align: middle;
}
.kind-measure { background: #2563eb; }
.kind-column { background: #64748b; }
.kind-calculated-column { background: #d97706; }
.kind-page { background: #16a34a; }
.kind-visual { background: #9333ea; }

.badge {
  display: inline-block;
  background: var(--border);
  color: var(--muted);
  font-size: 11px;
  font-weight: 500;
  padding: 1px 6px;
  border-radius: 999px;
  margin-left: 4px;
}
.badge.warn { background: #fef3c7; color: #92400e; }
.badge.cycle { background: var(--error-bg); color: var(--error-fg); }

/* ---- explorer layout ---- */
.explorer-grid {
  display: grid;
  grid-template-columns: minmax(260px, 1fr) 2fr;
  gap: 16px;
  margin-top: 8px;
}
@media (max-width: 720px) { .explorer-grid { grid-template-columns: 1fr; } }

.explorer-filter {
  width: 100%;
  padding: 6px 10px;
  font: inherit;
  border: 1px solid var(--border);
  border-radius: 6px;
  margin-bottom: 8px;
}

.object-list {
  list-style: none;
  padding: 0;
  margin: 0;
  max-height: 520px;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
}
.object-list li + li { border-top: 1px solid var(--border); }

.object-row {
  display: flex;
  align-items: center;
  width: 100%;
  text-align: left;
  background: transparent;
  border: 0;
  color: inherit;
  padding: 6px 10px;
  cursor: pointer;
  font: inherit;
  gap: 6px;
}
.object-row:hover { background: #f1f5f9; }
.object-row.active { background: #dbeafe; }
.object-row.unused { background: #fffbeb; }
.object-row.unused.active { background: #fef3c7; }
.row-label { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.row-meta { flex: 0 0 auto; }

.explorer-detail {
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  padding: 12px;
  min-height: 200px;
  max-height: 520px;
  overflow-y: auto;
}
.object-detail { display: none; }
.object-detail.active { display: block; }
.object-detail > header {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 12px;
}

.tabs { display: flex; gap: 4px; }
.tab {
  background: transparent;
  border: 1px solid transparent;
  color: var(--muted);
  padding: 4px 10px;
  border-radius: 6px;
  cursor: pointer;
  font: inherit;
  font-size: 13px;
}
.tab.active { background: var(--card); border-color: var(--border); color: var(--fg); }
.tab .count { margin-left: 2px; }

.tab-pane { display: none; }
.tab-pane.active { display: block; }

/* ---- tree ---- */
ul.tree { list-style: none; padding-left: 18px; margin: 0; }
ul.tree > li { padding: 1px 0; }
ul.tree details summary { padding: 2px 4px; border-radius: 4px; }
ul.tree details summary:hover { background: #f1f5f9; }
ul.tree details > summary::-webkit-details-marker { display: none; }
ul.tree .node-label { font-size: 14px; }