:root {
  --bg: #0a0d12;
  --panel: #12161d;
  --panel-border: #232a35;
  --text: #d7dde5;
  --muted: #6b7684;
  --accent: #4afa9a;
  --accent-dim: #2a8f5c;
  --warn: #ffb454;
  --danger: #ff6b6b;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  min-height: 100vh;
}

body {
  background-image:
    radial-gradient(circle at 15% 10%, rgba(74, 250, 154, 0.06), transparent 40%),
    radial-gradient(circle at 85% 90%, rgba(74, 250, 154, 0.04), transparent 45%);
}

.scanlines {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 50;
  background: repeating-linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0.015) 0px,
    rgba(255, 255, 255, 0.015) 1px,
    transparent 1px,
    transparent 3px
  );
  mix-blend-mode: overlay;
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 40px 20px 60px;
}

.topbar {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 32px;
  flex-wrap: wrap;
  gap: 8px;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.brand-glyph {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 1.1rem;
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.5rem;
  letter-spacing: 0.06em;
}

.brand-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--muted);
  letter-spacing: 0.03em;
}

.console {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.readout-panel,
.controls-panel,
.history-panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  padding: 22px 24px;
}

.readout-panel {
  position: relative;
  overflow: hidden;
}

.readout-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin-bottom: 14px;
}

.strength-label {
  color: var(--accent);
  font-weight: 500;
}

.readout {
  font-family: var(--font-mono);
  font-size: clamp(1.1rem, 4.5vw, 1.6rem);
  color: var(--accent);
  word-break: break-all;
  line-height: 1.4;
  min-height: 1.6em;
  text-shadow: 0 0 12px rgba(74, 250, 154, 0.35);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
}

.password-text.placeholder,
.password-text:empty {
  color: var(--muted);
  text-shadow: none;
  font-size: 0.95rem;
}

.cursor {
  display: inline-block;
  width: 9px;
  height: 1.1em;
  background: var(--accent);
  margin-left: 4px;
  animation: blink 1.1s step-end infinite;
  box-shadow: 0 0 8px rgba(74, 250, 154, 0.6);
}

@keyframes blink {
  50% { opacity: 0; }
}

.strength-meter {
  height: 4px;
  background: #1b212b;
  border-radius: 2px;
  margin-top: 18px;
  overflow: hidden;
}

.strength-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--danger), var(--warn), var(--accent));
  transition: width 0.4s ease;
}

.readout-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
}

.ghost-btn {
  background: transparent;
  border: 1px solid var(--panel-border);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  padding: 6px 14px;
  border-radius: 6px;
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease;
}

.ghost-btn:hover {
  border-color: var(--accent-dim);
  color: var(--accent);
}

.ghost-btn.copied {
  border-color: var(--accent);
  color: var(--accent);
}

.control-row {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
}

.control-row label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--muted);
  width: 56px;
  flex-shrink: 0;
}

.control-row input[type="range"] {
  flex: 1;
  accent-color: var(--accent);
  height: 4px;
}

.mono-badge {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  background: #0e1319;
  border: 1px solid var(--panel-border);
  border-radius: 4px;
  padding: 3px 8px;
  min-width: 30px;
  text-align: center;
}

.toggle-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 16px;
  margin-bottom: 20px;
}

.toggle {
  display: flex;
  align-items: center;
  gap: 9px;
  cursor: pointer;
  font-size: 0.86rem;
  color: var(--text);
}

.toggle input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-box {
  width: 16px;
  height: 16px;
  border: 1px solid var(--panel-border);
  border-radius: 4px;
  flex-shrink: 0;
  position: relative;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.toggle input:checked + .toggle-box {
  background: var(--accent-dim);
  border-color: var(--accent);
}

.toggle input:checked + .toggle-box::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 2px;
  width: 4px;
  height: 8px;
  border: solid #061109;
  border-width: 0 2px 2px 0;
  transform: rotate(40deg);
}

.toggle input:focus-visible + .toggle-box {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.primary-btn {
  width: 100%;
  background: var(--accent);
  color: #06130b;
  border: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.03em;
  padding: 13px 18px;
  border-radius: 8px;
  cursor: pointer;
  transition: transform 0.1s ease, box-shadow 0.15s ease;
}

.primary-btn:hover {
  box-shadow: 0 0 20px rgba(74, 250, 154, 0.35);
}

.primary-btn:active {
  transform: scale(0.98);
}

.error-text {
  color: var(--danger);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  margin: 10px 0 0;
  min-height: 1em;
}

.history-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin-bottom: 8px;
}

.history-note {
  font-size: 0.76rem;
  color: var(--muted);
  margin: 0 0 14px;
  line-height: 1.4;
}

.history-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 260px;
  overflow-y: auto;
}

.history-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  padding: 8px 10px;
  background: #0e1319;
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  color: var(--muted);
}

.history-item .h-strength {
  color: var(--accent);
}

.history-empty {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--muted);
  padding: 8px 2px;
}

.footer {
  margin-top: 32px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--muted);
}

@media (max-width: 480px) {
  .toggle-grid { grid-template-columns: 1fr; }
}