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

:root {
  --bg: #f8fafc;
  --bg-elev: #ffffff;
  --bg-elev-2: #f1f5f9;
  --border: #e2e8f0;
  --border-strong: #cbd5e1;
  --text: #0f172a;
  --text-dim: #475569;
  --text-muted: #94a3b8;
  --accent: #d97706;       /* pirate amber, darker for light bg */
  --accent-hover: #b45309;
  --accent-dim: rgba(217, 119, 6, 0.12);
  --danger: #dc2626;
  --ok: #059669;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 4px 16px rgba(15, 23, 42, 0.08);
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", Consolas, "Liberation Mono", Menlo, monospace;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-size: 14px;
  line-height: 1.5;
}

h1, h2, h3 { margin: 0; font-weight: 600; letter-spacing: -0.01em; }
h2 { font-size: 1.25rem; }
h3 { font-size: 1rem; color: var(--text-dim); letter-spacing: 0; }

code {
  font-family: var(--font-mono);
  background: var(--bg-elev-2);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 0.85em;
  border: 1px solid var(--border);
  color: var(--accent);
}

.muted { color: var(--text-muted); font-size: 0.9em; }
.empty { color: var(--text-muted); font-style: italic; padding: 1rem; text-align: center; }
.count { color: var(--text-muted); font-weight: 400; font-size: 0.85em; }

/* ===== Topbar ===== */
.topbar {
  background: var(--bg-elev);
  border-bottom: 1px solid var(--border);
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  gap: 2rem;
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 1rem 0;
  color: var(--text);
  text-decoration: none;
}
.brand:hover { color: var(--accent); }
.brand-text {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background: var(--accent);
  color: white;
  font-family: Georgia, serif;
  font-weight: 700;
  font-size: 1.05rem;
  line-height: 1;
}

.tabs {
  display: flex;
  gap: 0.25rem;
  margin-left: auto;
}
.tab {
  background: transparent;
  border: none;
  color: var(--text-dim);
  padding: 0.75rem 1rem;
  font-size: 0.9rem;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: color 0.15s, border-color 0.15s;
  font-family: inherit;
}
.tab:hover { color: var(--text); }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }

/* ===== Main ===== */
main {
  flex: 1;
  padding: 1.5rem 2rem;
  width: 100%;
}

.panel { display: none; }
.panel.active { display: block; animation: fadeIn 0.2s; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

/* ===== Search tab: sidebar + results layout ===== */
.search-layout {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 1.5rem;
  align-items: start;
}
@media (max-width: 900px) {
  .search-layout { grid-template-columns: 1fr; }
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  position: sticky;
  top: 5rem;
  max-height: calc(100vh - 7rem);
  overflow-y: auto;
}
@media (max-width: 900px) {
  .sidebar { position: static; max-height: none; }
}

.sidebar-section {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}
.sidebar-section h3 {
  margin: 0;
  color: var(--accent);
  font-size: 0.8rem;
}
.sidebar-section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.link-btn {
  background: none;
  border: none;
  padding: 0;
  color: var(--text-dim);
  font-size: 0.8rem;
  cursor: pointer;
  text-decoration: none;
}
.link-btn:hover { color: var(--accent); }

.options-stack {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border);
}

button.block { width: 100%; justify-content: center; padding: 0.75rem; font-size: 1rem; }

.results-pane {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  min-width: 0;
}

.field { display: flex; flex-direction: column; gap: 0.5rem; }
.field label {
  font-weight: 500;
  color: var(--text);
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.hint {
  font-weight: 400;
  color: var(--text-muted);
  font-size: 0.82rem;
}

input[type="text"], input[type="number"], textarea {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 0.65rem 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  transition: border-color 0.15s, box-shadow 0.15s;
  width: 100%;
}

/* Search criteria fields render uppercase (display only; matcher still lowercases internally) */
#letters, #pattern { text-transform: uppercase; }
#letters::placeholder, #pattern::placeholder { text-transform: uppercase; }
.word-item { text-transform: uppercase; }
input[type="text"]:focus, input[type="number"]:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}
input[type="number"] { width: 6rem; font-family: var(--font); }
textarea {
  resize: vertical;
  min-height: 180px;
  line-height: 1.4;
}

.check {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  user-select: none;
  color: var(--text-dim);
  font-size: 0.9rem;
}
.check:hover { color: var(--text); }
.check input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
  cursor: pointer;
}

.limit-control {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  color: var(--text-dim);
  font-size: 0.9rem;
}
.limit-control input { width: 5rem; }

label.inline {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--text-dim);
  font-size: 0.9rem;
}

/* ===== Buttons ===== */
button, .as-button {
  font-family: inherit;
  font-size: 0.9rem;
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s, transform 0.05s;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
button:active, .as-button:active { transform: translateY(1px); }
button:disabled { opacity: 0.45; cursor: not-allowed; }

button.primary, .as-button.primary {
  background: var(--accent);
  color: #ffffff;
  margin-left: auto;
}
button.primary:hover:not(:disabled), .as-button.primary:hover { background: var(--accent-hover); }

button.ghost {
  background: var(--bg-elev-2);
  border-color: var(--border);
  color: var(--text-dim);
}
button.ghost:hover:not(:disabled) {
  border-color: var(--border-strong);
  color: var(--text);
}

button.danger {
  background: transparent;
  border-color: transparent;
  color: var(--text-muted);
  padding: 0.3rem 0.5rem;
}
button.danger:hover { color: var(--danger); }

/* ===== Results ===== */
.results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}
.results-actions {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}
.meta {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-right: 0.5rem;
}

.results-list {
  max-height: 60vh;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  padding: 0.5rem;
}
.results-list.words {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 0.25rem;
}
.word-item {
  font-family: var(--font-mono);
  padding: 0.35rem 0.6rem;
  border-radius: 4px;
  background: var(--bg-elev-2);
  font-size: 0.9rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: border-color 0.1s, background 0.1s;
  text-align: center;
}
.word-item:hover { border-color: var(--accent); background: var(--bg-elev); }

/* ===== Wordlists tab ===== */
.wl-header, .conv-header { margin-bottom: 1.5rem; }
.wl-header p, .conv-header p { max-width: 760px; margin-top: 0.5rem; }

.wl-group {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow);
}
.wl-group h3 { margin-bottom: 0.75rem; }

.wl-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.wl-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 0.85rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.wl-item.checked { border-color: var(--accent); background: var(--accent-dim); }

.wl-list.compact .wl-item {
  padding: 0.45rem 0.6rem;
  font-size: 0.85rem;
  gap: 0.5rem;
}
.wl-list.compact .wl-stats { font-size: 0.75rem; }
.wl-item input[type="checkbox"] {
  width: 18px; height: 18px;
  accent-color: var(--accent);
  cursor: pointer;
  flex-shrink: 0;
}
.wl-item .wl-name { font-weight: 500; }
.wl-item .wl-stats { color: var(--text-muted); font-size: 0.85em; margin-left: auto; }
.wl-item .wl-error { color: var(--danger); font-size: 0.85em; }

.wl-upload {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}
.wl-upload input[type="file"] {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

/* ===== Converter tab ===== */
.conv-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}
@media (max-width: 900px) { .conv-grid { grid-template-columns: 1fr; } }

.conv-input, .conv-output {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  box-shadow: var(--shadow);
}
.conv-input label, .conv-output label { font-weight: 500; }
.conv-options {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  padding: 0.5rem 0;
}
.conv-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  align-items: center;
}
.conv-actions input[type="text"] { flex: 1; min-width: 160px; }
.conv-output textarea { min-height: 280px; }

/* ===== Help tab ===== */
.help-content {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 2rem;
  max-width: 800px;
  box-shadow: var(--shadow);
}
.help-content ul { padding-left: 1.5rem; }
.help-content li { margin-bottom: 0.4rem; }
.help-content .lede { font-size: 1rem; color: var(--text-dim); margin-top: 0.5rem; }
.help-content .section-title {
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
  font-size: 1.25rem;
}
.help-content h4 { margin: 1rem 0 0.4rem 0; font-size: 0.9rem; color: var(--accent); }
.help-content .note { color: var(--text-muted); font-style: italic; margin: 0.5rem 0; }
.help-content pre {
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  overflow-x: auto;
  font-size: 0.85rem;
  margin: 0.5rem 0;
}
.help-content pre code {
  background: none;
  border: none;
  padding: 0;
  color: var(--text);
}

.syntax-tbl {
  width: 100%;
  border-collapse: collapse;
  margin: 0.6rem 0;
  font-size: 0.9rem;
}
.syntax-tbl th, .syntax-tbl td {
  text-align: left;
  padding: 0.45rem 0.6rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.syntax-tbl th {
  font-weight: 600;
  color: var(--text-dim);
  font-size: 0.8rem;
  background: var(--bg-elev-2);
}
.syntax-tbl td:first-child { width: 7rem; white-space: nowrap; }

/* ===== Spoiler (details/summary) ===== */
.spoiler {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-elev-2);
  margin: 0.75rem 0;
  overflow: hidden;
}
.spoiler > summary {
  cursor: pointer;
  padding: 0.55rem 0.85rem;
  font-weight: 500;
  color: var(--text);
  list-style: none;
  position: relative;
  user-select: none;
  font-size: 0.9rem;
}
.spoiler > summary::-webkit-details-marker { display: none; }
.spoiler > summary::before {
  content: "▸";
  display: inline-block;
  margin-right: 0.5rem;
  color: var(--accent);
  transition: transform 0.15s;
  font-size: 0.75em;
}
.spoiler[open] > summary::before { transform: rotate(90deg); }
.spoiler > summary:hover { background: var(--bg-elev); }
.spoiler > *:not(summary) {
  padding: 0 0.85rem 0.75rem 0.85rem;
}
.spoiler ul { margin: 0.5rem 0; padding-left: 1.5rem; }
.spoiler li { margin-bottom: 0.3rem; font-size: 0.88rem; }
.spoiler p { margin: 0.5rem 0; }

/* ===== Hint link + floating tooltip ===== */
.hint-link {
  font-size: 0.75rem;
  color: var(--accent);
  cursor: pointer;
  text-decoration: underline;
  text-decoration-style: dotted;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
  background: none;
  border: none;
  padding: 0;
  margin-left: 0.4rem;
  font-weight: 400;
  font-family: inherit;
}
.hint-link:hover { color: var(--accent-hover); }

.tip-popup {
  position: absolute;
  background: var(--bg-elev);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 0.65rem 0.9rem;
  box-shadow: var(--shadow-lg);
  z-index: 50;
  max-width: 360px;
  font-size: 0.85rem;
  color: var(--text);
  animation: tipIn 0.12s ease-out;
}
.tip-popup[hidden] { display: none; }
.tip-popup ul { margin: 0.2rem 0; padding-left: 1.25rem; }
.tip-popup li { margin-bottom: 0.25rem; }
.tip-popup li:last-child { margin-bottom: 0; }
@keyframes tipIn { from { opacity: 0; transform: translateY(-3px); } to { opacity: 1; transform: none; } }

/* ===== Bottombar ===== */
.bottombar {
  background: var(--bg-elev);
  border-top: 1px solid var(--border);
  padding: 0.75rem 1.5rem;
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
}

/* ===== Toast ===== */
.toast {
  position: fixed;
  bottom: 4rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-elev-2);
  border: 1px solid var(--border-strong);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  z-index: 100;
  font-size: 0.9rem;
  animation: toastIn 0.2s;
}
.toast.error { border-color: var(--danger); }
.toast.success { border-color: var(--ok); }
@keyframes toastIn { from { opacity: 0; transform: translate(-50%, 8px); } to { opacity: 1; transform: translate(-50%, 0); } }

/* ===== Scrollbars ===== */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-strong); }