/* PassWatch – Noir Neon Theme
   ──────────────────────────── */

/* ═══ Reset & base ═══ */

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

:root {
  --bg-deep: #050509;
  --bg-surface: #0b0b14;
  --bg-panel: #0f0f1a;
  --bg-elevated: #14142a;
  --border: #1a1a3020;
  --text: #c8c8d8;
  --text-dim: #666680;
  --text-muted: #444460;
  --cyan: #00f2ff;
  --magenta: #ff006e;
  --red: #ff003c;
  --orange: #ff6b00;
  --yellow: #ffbe00;
  --green: #00ff88;
  --blue: #6ea8ff;
  --font-display: 'Space Grotesk', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

html {
  font-size: 16px;
}

body {
  background: var(--bg-deep);
  color: var(--text);
  font-family: var(--font-mono);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ═══ Grain overlay ═══ */

.grain-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  opacity: 0.035;
  background-image: url('assets/grain.svg');
  background-repeat: repeat;
  background-size: 200px;
}

/* ═══ Container ═══ */

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 48px 32px 32px;
}

/* ═══ Hero section ═══ */

.hero {
  display: flex;
  align-items: center;
  gap: 60px;
  margin-bottom: 48px;
}

.hero-left {
  flex: 1;
}

.hero-right {
  flex-shrink: 0;
}

.title {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: -1px;
  color: var(--text);
  line-height: 1.1;
  margin-bottom: 6px;
}

.title .accent {
  color: var(--cyan);
  text-shadow: 0 0 20px rgba(0, 242, 255, 0.3);
}

.subtitle {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--text-dim);
  font-weight: 400;
  margin-bottom: 28px;
  letter-spacing: 0.5px;
}

/* ═══ Input ═══ */

.input-group {
  position: relative;
  margin-bottom: 10px;
}

#password-input {
  width: 100%;
  padding: 14px 50px 14px 18px;
  background: var(--bg-panel);
  border: 1px solid #1a1a30;
  border-radius: 8px;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 1.1rem;
  letter-spacing: 1px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

#password-input::placeholder {
  color: var(--text-muted);
  letter-spacing: 0;
}

#password-input:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 20px rgba(0, 242, 255, 0.1), inset 0 0 20px rgba(0, 242, 255, 0.03);
}

.toggle-btn {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 1.4rem;
  cursor: pointer;
  padding: 6px 10px;
  transition: color 0.2s;
  line-height: 1;
}

.toggle-btn:hover {
  color: var(--cyan);
}

.hint {
  font-size: 0.72rem;
  color: var(--text-muted);
  padding-left: 2px;
}

/* ═══ Entropy ring ═══ */

.ring-container {
  display: flex;
  justify-content: center;
}

.entropy-ring {
  width: 190px;
  height: 190px;
  border-radius: 50%;
  background: conic-gradient(var(--cyan) 0deg, #1a1a2e 0deg);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.4s ease, filter 0.4s ease;
  filter: drop-shadow(0 0 12px rgba(0, 242, 255, 0.25));
  position: relative;
}

.ring-inner {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  background: var(--bg-deep);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0;
}

.ring-value {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--cyan);
  line-height: 1;
  transition: color 0.3s;
}

.ring-unit {
  font-size: 0.7rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-top: 2px;
}

.ring-sublabel {
  font-size: 0.65rem;
  color: var(--cyan);
  margin-top: 6px;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: color 0.3s;
}

/* ═══ Dashboard ═══ */

.dashboard {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 40px;
}

.dash-row {
  display: flex;
  gap: 20px;
}

.panel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 22px 26px;
  flex: 1;
}

.panel-title {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--text-dim);
  margin-bottom: 16px;
}

/* ═══ Strength bar ═══ */

.strength-panel {
  flex: 0.7;
}

.strength-bar-container {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.strength-bar {
  height: 8px;
  background: var(--bg-elevated);
  border-radius: 4px;
  overflow: hidden;
  position: relative;
}

.strength-fill {
  height: 100%;
  width: 0%;
  border-radius: 4px;
  transition: width 0.4s ease, background 0.4s ease, box-shadow 0.4s ease;
  position: relative;
}

.scanline {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(255, 255, 255, 0.03) 2px,
    rgba(255, 255, 255, 0.03) 4px
  );
  animation: scanmove 3s linear infinite;
}

@keyframes scanmove {
  0% { background-position: 0 0; }
  100% { background-position: 0 40px; }
}

.strength-meta {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.strength-score-wrap {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.strength-score {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  transition: color 0.3s;
}

.strength-label {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: color 0.3s;
}

/* ═══ Attack cards ═══ */

.cards-panel {
  flex: 1.3;
}

.attack-cards {
  display: flex;
  gap: 12px;
}

.attack-card {
  flex: 1;
  background: var(--bg-elevated);
  border: 1px solid #1a1a3020;
  border-radius: 8px;
  padding: 16px 14px;
  text-align: center;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.card-label {
  font-family: var(--font-display);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--text-dim);
  margin-bottom: 10px;
}

.card-time {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
  min-height: 1.4em;
  transition: color 0.3s;
}

.card-desc {
  font-size: 0.6rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.crack-notes {
  font-size: 0.7rem;
  color: var(--orange);
  margin-top: 12px;
  min-height: 1em;
}

/* ═══ Pattern heatmap ═══ */

.heatmap-panel {
  flex: 1;
}

.heatmap {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  min-height: 48px;
  align-items: center;
}

.heatmap-placeholder,
.weakness-placeholder {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-style: italic;
}

.heatmap-cell {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: 5px;
  border: 1px solid transparent;
  position: relative;
  cursor: default;
  transition: background 0.2s, border-color 0.2s, transform 0.15s;
}

.heatmap-cell:hover {
  transform: scale(1.15);
  z-index: 2;
}

.heatmap-cell.heatmap-flagged {
  border-width: 2px;
  animation: flagPulse 2s ease-in-out infinite;
}

@keyframes flagPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.75; }
}

.heatmap-tooltip {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: #1a1a2eee;
  border: 1px solid #2a2a4a;
  border-radius: 6px;
  padding: 6px 10px;
  font-size: 0.65rem;
  color: var(--text);
  white-space: pre-line;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s;
  z-index: 10;
  min-width: 140px;
  text-align: left;
}

.heatmap-cell:hover .heatmap-tooltip {
  opacity: 1;
}

.heatmap-legend {
  display: flex;
  gap: 14px;
  margin-top: 14px;
  flex-wrap: wrap;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 0.6rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.legend-swatch {
  width: 10px;
  height: 10px;
  border-radius: 2px;
  display: inline-block;
}

.flagged-swatch {
  background: transparent;
  border: 2px solid var(--red);
}

/* ═══ Weakness callouts ═══ */

.weaknesses-panel {
  flex: 1;
}

.weaknesses {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.weakness-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 12px 14px;
  border-radius: 8px;
  background: var(--bg-elevated);
  border-left: 3px solid transparent;
  animation: slideIn 0.25s ease-out;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.weakness-item.severity-high {
  border-left-color: var(--red);
  background: linear-gradient(90deg, rgba(255, 0, 60, 0.06), transparent);
}

.weakness-item.severity-medium {
  border-left-color: var(--orange);
  background: linear-gradient(90deg, rgba(255, 107, 0, 0.06), transparent);
}

.weakness-item.severity-low {
  border-left-color: var(--yellow);
  background: linear-gradient(90deg, rgba(255, 190, 0, 0.06), transparent);
}

.weakness-icon {
  font-size: 1.1rem;
  line-height: 1;
  flex-shrink: 0;
  margin-top: 1px;
}

.weakness-content {
  flex: 1;
  min-width: 0;
}

.weakness-title {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 3px;
}

.weakness-desc {
  font-size: 0.7rem;
  color: var(--text-dim);
  line-height: 1.5;
}

/* ═══ How this works ═══ */

.how-section {
  margin-bottom: 32px;
}

.how-toggle {
  background: none;
  border: none;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  cursor: pointer;
  padding: 8px 0;
  transition: color 0.2s;
  display: flex;
  align-items: center;
  gap: 6px;
}

.how-toggle:hover {
  color: var(--cyan);
}

.how-arrow {
  font-size: 0.7rem;
  transition: transform 0.2s;
}

.how-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, opacity 0.3s ease;
  opacity: 0;
}

.how-content.expanded {
  max-height: 400px;
  opacity: 1;
  margin-top: 12px;
}

.how-grid {
  display: flex;
  gap: 16px;
}

.how-card {
  flex: 1;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 18px 20px;
}

.how-card h3 {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--cyan);
  margin-bottom: 8px;
}

.how-card p {
  font-size: 0.7rem;
  color: var(--text-dim);
  line-height: 1.7;
}

.how-card code {
  background: var(--bg-elevated);
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 0.68rem;
  color: var(--cyan);
}

.how-card strong {
  color: var(--text);
}

.how-card em {
  color: var(--cyan);
  font-style: normal;
}

/* ═══ Footer ═══ */

.footer {
  text-align: center;
  padding: 20px 0 8px;
  border-top: 1px solid #1a1a3015;
}

.footer p {
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}

.footer-credit {
  margin-top: 6px;
}

.footer-credit strong {
  color: var(--text);
}

/* ═══ Responsive ═══ */

@media (max-width: 860px) {
  .hero {
    flex-direction: column;
    gap: 32px;
    text-align: center;
  }

  .dash-row {
    flex-direction: column;
  }

  .attack-cards {
    flex-direction: column;
  }

  .how-grid {
    flex-direction: column;
  }

  .container {
    padding: 24px 16px 24px;
  }

  .title {
    font-size: 2.2rem;
  }
}