@import url('https://fonts.googleapis.com/css2?family=Space+Mono:wght@400;700&family=DM+Sans:wght@300;400;500&display=swap');

:root[data-theme="dark"] {
  --bg: #0e0e0e;
  --surface: #181818;
  --border: #2a2a2a;
  --accent: #c8f060;
  --accent2: #60c8f0;
  --text: #e8e8e8;
  --muted: #666;
  --danger: #f06060;
}

:root[data-theme="light"] {
  --bg: #f0f0f0;
  --surface: #ffffff;
  --border: #ddd;
  --accent: #5a8200;
  --accent2: #0070a0;
  --text: #1a1a1a;
  --muted: #999;
  --danger: #cc3333;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'DM Sans', sans-serif;
  min-height: 100vh;
  padding: 40px 20px;
}

.container {
  max-width: 720px;
  margin: 0 auto;
}

header { margin-bottom: 48px; }

h1 {
  font-family: 'Space Mono', monospace;
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  color: var(--accent);
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.subtitle {
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 8px;
  font-weight: 300;
  letter-spacing: 0.02em;
}

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

.card-label {
  font-family: 'Space Mono', monospace;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--muted);
  margin-bottom: 16px;
}

.controls {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 10px;
}

.control-group label {
  display: block;
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 6px;
  font-weight: 500;
}

select {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.9rem;
  padding: 8px 12px;
  outline: none;
  transition: border-color 0.15s;
}

select:focus { border-color: var(--accent); }

.btn {
  font-family: 'Space Mono', monospace;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 10px 20px;
  border-radius: 4px;
  border: none;
  cursor: pointer;
  transition: all 0.15s;
}

.btn-primary { background: var(--accent); color: #0e0e0e; }
[data-theme="light"] .btn-primary { color: #fff; }
.btn-primary:hover { filter: brightness(1.1); transform: translateY(-1px); }

.btn-secondary {
  background: transparent;
  color: var(--accent2);
  border: 1px solid var(--accent2);
}
.btn-secondary:hover { background: color-mix(in srgb, var(--accent2) 10%, transparent); }

.btn-ghost {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border);
  font-size: 0.7rem;
  padding: 6px 12px;
}
.btn-ghost:hover { color: var(--text); border-color: var(--muted); }

.pool-info {
  font-size: 0.73rem;
  color: var(--muted);
  margin-bottom: 4px;
}
.pool-info span { color: var(--accent2); font-family: 'Space Mono', monospace; }

.password-output {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 20px;
  margin: 16px 0;
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.password-text {
  font-family: 'Space Mono', monospace;
  font-size: clamp(1rem, 3vw, 1.4rem);
  word-break: break-all;
  flex: 1;
  letter-spacing: 0.05em;
}

.password-text.empty {
  color: var(--muted);
  font-size: 0.85rem;
  font-style: italic;
  letter-spacing: 0;
}

@keyframes wordSlideIn {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes keyTap {
  0%   { transform: scale(1);    filter: brightness(1); }
  30%  { transform: scale(0.82); filter: brightness(2); }
  100% { transform: scale(1);    filter: brightness(1); }
}

.hand-left  { color: var(--accent); }
.hand-right { color: var(--accent2); }
.hand-sep   { color: var(--muted); }

.copy-btn {
  flex-shrink: 0;
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 6px 12px;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s;
}
.copy-btn:hover { border-color: var(--accent); color: var(--accent); }
.copy-btn.copied { border-color: var(--accent); color: var(--accent); }

.stats-row {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.stat { font-size: 0.78rem; color: var(--muted); }
.stat span { color: var(--accent2); font-family: 'Space Mono', monospace; }

.action-row {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}

.stat-asterisk {
  cursor: help;
  font-size: 0.65em;
  vertical-align: super;
  color: var(--muted);
  position: relative;
  display: inline-block;
  margin-left: 1px;
}
.stat-asterisk::after {
  content: attr(data-tip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.75rem;
  font-style: normal;
  white-space: nowrap;
  padding: 5px 10px;
  border-radius: 4px;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s;
  z-index: 100;
}
.stat-asterisk:hover::after { opacity: 1; }

.candidates-panel {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.candidates-label {
  font-family: 'Space Mono', monospace;
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--muted);
  margin-bottom: 8px;
}

.candidate-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  margin-bottom: 4px;
  cursor: pointer;
  transition: border-color 0.15s;
  gap: 12px;
}
.candidate-item:hover { border-color: var(--accent2); }

.candidate-text {
  font-family: 'Space Mono', monospace;
  font-size: 0.82rem;
  color: var(--text);
  word-break: break-all;
  flex: 1;
}

.candidate-use {
  font-family: 'Space Mono', monospace;
  font-size: 0.65rem;
  color: var(--muted);
  flex-shrink: 0;
  white-space: nowrap;
}
.candidate-item:hover .candidate-use { color: var(--accent2); }

input[type="checkbox"] { accent-color: var(--accent); width: auto; cursor: pointer; }
.check-label { display: flex; align-items: center; gap: 8px; font-size: 0.85rem; color: var(--text); cursor: pointer; padding-top: 2px; }

.generated-history {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 200px;
  overflow-y: auto;
}

.history-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-family: 'Space Mono', monospace;
  font-size: 0.8rem;
  color: var(--text);
  gap: 12px;
  cursor: pointer;
  transition: border-color 0.15s;
}
.history-item:hover { border-color: var(--accent2); }
.history-copy { font-size: 0.65rem; color: var(--muted); cursor: pointer; flex-shrink: 0; }
.history-copy:hover { color: var(--accent); }

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.kbd-map {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
  margin-top: 12px;
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
}

.kbd-key {
  padding: 3px 7px;
  border-radius: 3px;
  border: 1px solid var(--border);
  background: var(--bg);
  transition: background 0.08s, color 0.08s;
}
.kbd-key.left  { border-color: var(--accent);  color: var(--accent); }
.kbd-key.right { border-color: var(--accent2); color: var(--accent2); }
.kbd-key.active.left  { background: var(--accent);  color: var(--bg); }
.kbd-key.active.right { background: var(--accent2); color: var(--bg); }

.kbd-key.typing { animation: keyTap 0.15s ease-out; }
.kbd-key.typing.left  { background: var(--accent);  color: var(--bg); }
.kbd-key.typing.right { background: var(--accent2); color: var(--bg); }

.kbd-legend { display: flex; gap: 16px; margin-top: 8px; font-size: 0.75rem; }
.legend-item { display: flex; align-items: center; gap: 6px; color: var(--muted); }
.legend-dot { width: 10px; height: 10px; border-radius: 2px; }
.legend-dot.left  { background: var(--accent); }
.legend-dot.right { background: var(--accent2); }

.notice {
  background: color-mix(in srgb, var(--accent2) 6%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent2) 22%, transparent);
  border-radius: 6px;
  padding: 12px 16px;
  font-size: 0.8rem;
  color: var(--muted);
  line-height: 1.5;
}
.notice strong { color: var(--accent2); }

.strength-badge {
  display: inline-block;
  font-family: 'Space Mono', monospace;
  font-size: 0.58rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 1px 6px;
  border-radius: 3px;
  vertical-align: middle;
  margin-left: 5px;
  background: color-mix(in srgb, var(--accent2) 15%, transparent);
  color: var(--accent2);
}
.strength-badge.excellent {
  background: color-mix(in srgb, var(--accent) 15%, transparent);
  color: var(--accent);
}

.theme-toggle {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  border-radius: 6px;
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  transition: all 0.15s;
  flex-shrink: 0;
}
.theme-toggle:hover { border-color: var(--accent); color: var(--accent); }

.icon-sun, .icon-moon, .icon-system { display: none; }
:root[data-theme-mode="dark"]   .icon-sun    { display: block; }
:root[data-theme-mode="light"]  .icon-moon   { display: block; }
:root[data-theme-mode="system"] .icon-system { display: block; }

.logo-link { color: inherit; text-decoration: none; }
.logo-link:hover { opacity: 0.8; }

.header-row { display: flex; justify-content: space-between; align-items: flex-start; }

/* Advanced options collapsible */
details {
  margin-top: 12px;
  border-top: 1px solid var(--border);
  padding-top: 12px;
}

details summary {
  font-size: 0.78rem;
  color: var(--muted);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 6px;
  user-select: none;
  outline: none;
}
details summary::-webkit-details-marker { display: none; }

details summary::before {
  content: '▶';
  font-size: 0.55rem;
  transition: transform 0.15s;
  display: inline-block;
}
details[open] summary::before { transform: rotate(90deg); }
details summary:hover { color: var(--text); }

.advanced-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 14px;
}

.advanced-section-label {
  grid-column: 1 / -1;
  font-family: 'Space Mono', monospace;
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  border-top: 1px solid var(--border);
  padding-top: 12px;
  margin-top: 2px;
}

footer {
  text-align: center;
  font-size: 0.75rem;
  color: var(--muted);
  padding: 32px 0 16px;
}
footer a { color: var(--muted); text-decoration: none; }
footer a:hover { color: var(--accent); }

.swipe-hint { display: none; font-size: 0.68rem; color: var(--muted); text-align: center; margin-top: 6px; }
@media (hover: none) and (pointer: coarse) { .swipe-hint { display: block; } }

@media (max-width: 480px) {
  .controls { grid-template-columns: 1fr; }
  .advanced-grid { grid-template-columns: 1fr; }
  .password-text { font-size: 1rem; }
}