:root {
  /* Colors - HSL (Legacy) */
  --hue-base: 215;
  --hue-accent: 262;
  --hue-accent-2: 189;
  --hue-success: 145;
  --hue-danger: 0;
  --hue-warning: 43;

  /* Colors - OKLCH (Modern) */
  --hue-base-oklch: 265;
  --hue-accent-oklch: 290;
  --hue-accent-2-oklch: 230;

  /* Semantic Colors */
  --color-bg: oklch(18% 0.04 var(--hue-base-oklch));
  --color-bg-alt: oklch(14% 0.04 var(--hue-base-oklch));
  --color-card: oklch(22% 0.05 var(--hue-base-oklch) / 0.95);
  --color-text: oklch(94% 0.01 var(--hue-base-oklch));
  --color-text-muted: oklch(70% 0.02 var(--hue-base-oklch));
  --color-text-inverse: oklch(100% 0 0);

  --color-surface-1: oklch(25% 0.05 var(--hue-base-oklch) / 0.4);
  --color-surface-2: oklch(28% 0.05 var(--hue-base-oklch) / 0.6);
  --color-surface-3: oklch(30% 0.05 var(--hue-base-oklch) / 0.5);

  --color-border: oklch(35% 0.05 var(--hue-base-oklch) / 0.2);
  --color-border-hover: oklch(45% 0.06 var(--hue-base-oklch) / 0.5);

  --color-accent: oklch(65% 0.22 var(--hue-accent-oklch));
  --color-accent-glow: oklch(65% 0.22 var(--hue-accent-oklch) / 0.35);
  --color-accent-2: oklch(70% 0.18 var(--hue-accent-2-oklch));

  --gradient-primary: linear-gradient(
    135deg,
    var(--color-accent),
    var(--color-accent-2)
  );
  --gradient-surface: linear-gradient(
    180deg,
    oklch(25% 0.05 var(--hue-base-oklch) / 0.8),
    oklch(18% 0.04 var(--hue-base-oklch) / 0.9)
  );
  --gradient-fallback: var(--color-accent);

  --shadow-soft: 0 1rem 2rem oklch(10% 0.02 var(--hue-base-oklch) / 0.45);
  --shadow-glow: 0 0 2rem var(--color-accent-glow);

  /* Spacing & Radius */
  --radius-lg: 0.85rem;
  --radius-md: 0.6rem;
  --radius-full: 999rem;

  /* Compact Spacing */
  --gap-sm: clamp(0.35rem, 0.8vw, 0.5rem);
  --gap-md: clamp(0.75rem, 1.2vw, 1rem);
  --gap-lg: clamp(0.7rem, 1vw, 1.1rem);
  --history-height: clamp(18rem, 48vh, 26rem);
  --history-visible-items: 5;
  --history-row-gap: clamp(0.35rem, 0.8vw, 0.5rem);

  --transition: 200ms cubic-bezier(0.2, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

.list li {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 0.6rem 0.85rem;
  background: var(--color-surface-1);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.875rem;
  gap: 0.75rem;
}

.history-item {
  display: flex;
  justify-content: space-between;
  gap: var(--gap-md);
  width: 100%;
}

.history-left {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  min-width: 0;
  flex: 1;
}

.history-value {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--color-text);
  font-size: 0.85rem;
}

.history-type {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-full);
  background: hsl(var(--hue-base) 40% 18% / 0.6);
  border: 1px solid hsl(var(--hue-base) 30% 40% / 0.5);
  width: fit-content;
}

.history-type-password {
  border-color: hsl(var(--hue-accent) 82% 59% / 0.6);
  color: hsl(var(--hue-accent) 90% 75%);
}

.history-type-passphrase {
  border-color: hsl(var(--hue-warning) 100% 50% / 0.7);
  color: hsl(var(--hue-warning) 100% 70%);
}

.history-type-username {
  border-color: hsl(var(--hue-accent-2) 95% 42% / 0.6);
  color: hsl(var(--hue-accent-2) 95% 70%);
}

.history-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-muted);
  font-size: 0.7rem;
  flex-wrap: wrap;
}

.history-meta time {
  font-family: "Inter", system-ui, -apple-system, sans-serif;
}

.history-actions {
  display: flex;
  align-items: center;
}

.list li button.btn {
  padding: 0.4rem 0.6rem;
  font-size: 0.75rem;
  background: transparent;
  border: 1px solid hsl(215 30% 40% / 0.4);
  border-radius: var(--radius-md);
  transition: border-color 0.2s ease;
  cursor: pointer;
}

body {
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  background: radial-gradient(
    circle at top,
    oklch(25% 0.05 var(--hue-base-oklch)),
    var(--color-bg)
  );
  color: var(--color-text);
  display: flex;
  justify-content: center;
  overflow-y: auto;
}

/* App Container */
.app {
  /* Full width on mobile, centered on desktop */
  width: 100vw;
  min-height: 100vh;
  /* Prevent the page from shrinking below this width (adjustable) */
  min-width: 26rem; /* Minimum responsive width */
  padding: clamp(0.4rem, 1.2vw, 0.8rem) clamp(0.85rem, 2.1vw, 1.75rem);
  display: flex;
  flex-direction: column;
  gap: var(--gap-lg);
}

@media (min-width: 64rem) {
  .app {
    width: min(50rem, 100vw);
  }
}

/* Desktop Layout Optimization (Fit to Screen) */
@media (min-width: 64rem) and (min-height: 40rem) {
  body {
    overflow: hidden;
    align-items: center;
  }

  .app {
    height: 100vh;
    min-height: 0; /* Allow shrinking */
    max-height: 100vh;
    /* Tighter padding on desktop to prevent cropping */
    padding: 1vh 1.5vw;
    gap: 1.2vh;
    justify-content: center;
    overflow-y: auto;
  }

  .hero {
    gap: 0.5vh !important;
    padding: 0.5vh 0;
  }

  .hero h1 {
    font-size: clamp(2rem, 4vw, 3rem) !important;
  }

  .lead {
    font-size: clamp(0.75rem, 1.2vw, 0.85rem);
  }

  .secured-badge {
    padding: 0.35rem 1.2rem !important;
    font-size: 0.68rem !important;
    margin-block: 1rem !important;
  }

  .secured-badge i {
    font-size: 1rem !important;
  }

  .card {
    padding: 1.5vh 1.5vw !important;
  }

  .controls {
    margin-top: 1.5vh !important;
    gap: 1.2vh !important;
  }

  .tip-section {
    padding: 0.75vh 0 !important;
    font-size: 0.75rem !important;
  }

  .footer {
    margin-top: 0 !important;
    padding-top: 0.5vh !important;
    font-size: 0.75rem !important;
  }
}
/* Scrollbar Styling - Hide on all screens */
html,
body {
  scrollbar-width: none; /* Firefox */
  -ms-overflow-style: none; /* IE and Edge */
}

html::-webkit-scrollbar,
body::-webkit-scrollbar,
.app::-webkit-scrollbar {
  display: none; /* Chrome, Safari, Opera */
}

/* Typography & Hero */
.hero {
  text-align: center;
  display: grid;
  gap: var(--gap-sm);
  flex-shrink: 0;
  justify-items: center;
  margin-top: 0.1rem;
  padding-top: 0;
}
.hero h1 {
  font-size: clamp(2rem, 4.5vw, 3rem);
  margin: 0;
  letter-spacing: -0.03em;
  color: var(--color-text);
  text-shadow: 0 0.35rem 1.1rem oklch(12% 0.03 var(--hue-base-oklch));
}
.lead {
  color: var(--color-muted);
  margin: 0;
  font-size: clamp(0.85rem, 1.5vw, 1rem);
  max-width: 100%;
  justify-self: center;
  line-height: 1.4;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Badge */
.secured-badge {
  justify-self: center;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 1rem;
  border-radius: var(--radius-full);
  background: radial-gradient(
    circle at top,
    hsl(var(--hue-accent) 82% 59% / 0.25),
    hsl(var(--hue-accent-2) 95% 42% / 0.15)
  );
  border: 1px solid hsl(var(--hue-accent) 82% 59% / 0.3);
  color: hsl(var(--hue-accent-2) 80% 92%);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.7rem;
  font-weight: 700;
  box-shadow: 0 0 1.5rem hsl(var(--hue-accent) 80% 60% / 0.15);
  animation: badge-pulse 3s ease-in-out infinite;
  margin-block: 0.75rem;
}
.secured-badge i {
  font-size: 0.8rem;
}

.hero-badges {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  justify-content: center;
}

.hero-private {
  padding: 0;
  border: none;
  border-radius: 0;
  background: transparent;
  backdrop-filter: none;
  display: inline-flex;
  align-items: center;
}
.hero-private label {
  color: var(--color-muted);
  font-size: 0.85rem;
  padding-left: 0;
  margin-left: 0;
}
@keyframes badge-pulse {
  0%,
  100% {
    box-shadow: 0 0 1rem hsl(var(--hue-accent) 80% 60% / 0.15);
    border-color: hsl(var(--hue-accent) 82% 59% / 0.3);
  }
  50% {
    box-shadow: 0 0 2rem hsl(var(--hue-accent) 80% 60% / 0.35);
    border-color: hsl(var(--hue-accent) 82% 59% / 0.6);
  }
}

/* Cards */
.card {
  background: var(--gradient-surface);
  border-radius: var(--radius-lg);
  padding: clamp(1.1rem, 2vw, 1.5rem);
  width: 100%;
  box-shadow: var(--shadow-soft);
  border: 1px solid hsl(var(--hue-base) 45% 40% / 0.15);
  backdrop-filter: blur(1rem);
  flex-shrink: 0;
}

/* Card Layouts */
.card.generator,
.card.history {
  display: flex;
  flex-direction: column;
  gap: var(--gap-sm);
}

.card.generator {
  gap: var(--gap-md);
}

.card.history {
  min-height: var(--history-height);
  max-height: var(--history-height);
  gap: var(--gap-sm);
  padding-bottom: var(--gap-md);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: calc(var(--gap-md) * 0.65);
  flex-shrink: 0;
}
.card.history .card-header {
  margin-bottom: var(--gap-md);
}
.card-header .actions {
  display: flex;
  gap: var(--gap-sm);
}

/* Generator Type Selector */
.generator-type-selector {
  flex-grow: 1;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.generator-label {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text);
}

@media (max-width: 48rem) {
  .generator-label {
    display: none;
  }
}

/* Custom Dropdown */
.custom-dropdown {
  position: relative;
  width: fit-content;
  min-width: 160px;
}

.dropdown-trigger {
  background: linear-gradient(
    135deg,
    hsl(var(--hue-base) 40% 16% / 0.6),
    hsl(var(--hue-base) 35% 12% / 0.7)
  );
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1.5px solid hsl(var(--hue-accent) 82% 59% / 0.3);
  border-radius: var(--radius-md);
  padding: 0.65rem 2.5rem 0.65rem 1rem;
  color: var(--color-text);
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  transition: border-color 0.2s, box-shadow 0.2s, background-color 0.2s;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
  position: relative;
}

.dropdown-trigger:hover {
  border-color: hsl(var(--hue-accent) 82% 59% / 0.5);
  background: linear-gradient(
    135deg,
    hsl(var(--hue-base) 40% 18% / 0.7),
    hsl(var(--hue-base) 35% 14% / 0.8)
  );
}

.dropdown-trigger:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
  outline: none;
}

.dropdown-trigger .arrow {
  position: absolute;
  right: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  width: 1rem;
  height: 1rem;
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23ffffff' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6,9 12,15 18,9'%3e%3c/polyline%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
  pointer-events: none;
}

.custom-dropdown.open .dropdown-trigger .arrow {
  transform: translateY(-50%) rotate(180deg);
}

.dropdown-options {
  position: absolute;
  top: calc(100% + 0.5rem);
  left: 0;
  right: 0;
  background: hsl(var(--hue-base) 40% 12% / 0.7);
  border: 1px solid hsl(var(--hue-accent) 82% 59% / 0.3);
  border-radius: var(--radius-md);
  box-shadow: 0 1rem 2rem hsl(0 0% 0% / 0.3);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  list-style: none;
  padding: 0.5rem;
  margin: 0;
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.2s cubic-bezier(0.2, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.custom-dropdown.open .dropdown-options {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-option {
  padding: 0.6rem 1rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background 0.2s;
  color: var(--color-text-muted);
  font-weight: 500;
}

.dropdown-option:hover {
  background: hsl(var(--hue-accent) 82% 59% / 0.15);
  color: var(--color-text);
}

.dropdown-option.selected {
  background: hsl(var(--hue-accent) 82% 59% / 0.25);
  color: var(--color-accent);
  font-weight: 600;
}

.card-header h2 {
  margin: 0;
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  font-weight: 700;
}

/* Inputs */
.card.generator .card-body {
  flex: 1 1 auto;
  display: grid;
}

.output {
  min-width: 0; /* Prevents grid blowout */
}

.output-display {
  display: block;
  width: 100%;
  height: clamp(3rem, 7vh, 4rem);
  line-height: clamp(3rem, 7vh, 4rem);
  padding: 0 clamp(0.75rem, 1.5vw, 1rem);
  border-radius: var(--radius-md);
  border: 1px solid hsl(var(--hue-accent) 82% 59% / 0.4);
  background: hsl(var(--hue-base) 35% 14% / 0.6);
  color: var(--color-text);
  font-family: "JetBrains Mono", monospace;
  font-weight: 700;
  font-size: clamp(1.1rem, 2.2vw, 1.4rem);
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  letter-spacing: 0.05em;
  transition: var(--transition);
  user-select: none;
  outline: none;
}
.output-display:focus-visible {
  border-color: var(--color-accent);
  box-shadow: 0 0 2rem var(--color-accent-glow);
}

/* Controls */
.controls {
  display: grid;
  gap: var(--gap-md);
  margin-top: var(--gap-lg);
}
.range-label {
  display: flex;
  justify-content: space-between;
  color: var(--color-text-muted);
  font-weight: 600;
  font-size: 0.875rem;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.control-label {
  color: var(--color-text-muted);
  font-weight: 600;
  font-size: 0.875rem;
}

.text-input {
  width: 100%;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid hsl(var(--hue-base) 30% 35% / 0.4);
  background: hsl(var(--hue-base) 35% 14% / 0.6);
  color: var(--color-text);
  font-family: inherit;
  font-size: 0.95rem;
  transition: var(--transition);
  outline: none;
}

.text-input:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 2px var(--color-accent-glow);
}

.text-input::placeholder {
  color: hsl(var(--hue-base) 20% 65% / 0.5);
}

/* Range Slider */
input[type="range"] {
  width: 100%;
  height: 0.35rem;
  appearance: none;
  border-radius: var(--radius-full);
  background: hsl(var(--hue-base) 30% 25%);
  cursor: pointer;
  outline: none;
}
input[type="range"]::-webkit-slider-thumb {
  appearance: none;
  width: 1.35rem;
  height: 1.35rem;
  border-radius: 50%;
  background: var(--gradient-fallback);
  background: var(--gradient-primary);
  border: 2px solid hsl(var(--hue-base) 35% 14%);
  cursor: pointer;
  outline: none;
}
input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}
input[type="range"]::-webkit-slider-thumb:active {
  transform: scale(1.05);
}
input[type="range"]::-moz-range-thumb {
  appearance: none;
  width: 1.35rem;
  height: 1.35rem;
  border-radius: 50%;
  background: var(--gradient-fallback);
  background: var(--gradient-primary);
  border: 2px solid hsl(var(--hue-base) 35% 14%);
  cursor: pointer;
  outline: none;
}
input[type="range"]::-moz-range-thumb:hover {
  transform: scale(1.15);
}
input[type="range"]::-moz-range-thumb:active {
  transform: scale(1.05);
}

/* Buttons */
.btn {
  background: var(--color-surface-3);
  border: 1px solid hsl(var(--hue-base) 30% 40% / 0.3);
  color: var(--color-text);
  padding: 0.6rem 1rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-weight: 600;
  transition: var(--transition);
  font-size: 0.875rem;
}
.btn:hover {
  background: hsl(var(--hue-base) 40% 25% / 0.8);
  border-color: hsl(var(--hue-base) 30% 50% / 0.5);
}
.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}
.btn.ghost {
  background: transparent;
  color: var(--color-text-muted);
  border-color: hsl(var(--hue-base) 30% 40% / 0.35);
  padding: 0.55rem 1rem;
}
.btn.ghost:hover {
  color: var(--color-text);
  border-color: var(--color-accent);
  background: hsl(var(--hue-base) 35% 20% / 0.4);
}
.btn.primary {
  background: var(--gradient-fallback);
  background: var(--gradient-primary);
  border: none;
  color: var(--color-text-inverse);
  padding: 0.75rem 1.75rem;
  font-size: 0.95rem;
  box-shadow: 0 0.25rem 0.75rem var(--color-accent-glow);
}
.btn.primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0.4rem 1rem var(--color-accent-glow);
}
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
.generate-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: calc(var(--gap-md) * 0.75);
}

.advanced-actions {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.mobile-options-btn {
  display: none;
  padding: 0.75rem;
  font-size: 1rem;
  line-height: 1;
}

@media (max-width: 48rem) {
  .desktop-options-btn {
    display: none;
  }
  .mobile-options-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.75rem;
    height: 2.75rem;
    border-radius: var(--radius-md);
    background: hsl(var(--hue-base) 35% 20% / 0.4);
    border: 1px solid hsl(var(--hue-base) 30% 40% / 0.3);
    color: var(--color-text-muted);
    transition: all 0.2s ease;
  }
  .mobile-options-btn:active {
    transform: scale(0.95);
    background: hsl(var(--hue-base) 35% 25% / 0.6);
    color: var(--color-accent);
    border-color: var(--color-accent);
  }
  .advanced-actions {
    justify-content: flex-end;
    gap: 0.75rem;
    width: auto;
    flex: 1;
  }
}

@media (max-width: 28rem) {
  .generate-row {
    flex-direction: column;
    align-items: stretch;
    gap: 1rem;
  }

  .checkbox-wrapper {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: flex-start;
  }

  .advanced-actions {
    width: 100%;
    justify-content: space-between;
  }

  #generateBtn {
    flex: 1;
  }
}

.generate-row.username-actions {
  justify-content: space-between;
  gap: 1rem;
}

.generate-row.username-actions .text-input {
  flex: 1;
  min-width: 0;
}

/* Checkbox */
.checkbox-wrapper {
  --size: 20px;
  position: relative;
}

.checkbox-wrapper *,
.checkbox-wrapper *:before,
.checkbox-wrapper *:after {
  box-sizing: border-box;
}

.checkbox-wrapper .promoted-input-checkbox {
  border: 0;
  clip: rect(0 0 0 0);
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute;
  width: 1px;
}

.checkbox-wrapper input:checked ~ svg {
  height: calc(var(--size) * 0.6);
  -webkit-animation: draw-checkbox ease-in-out 0.2s forwards;
  animation: draw-checkbox ease-in-out 0.2s forwards;
}

.checkbox-wrapper label:active::after,
.checkbox-wrapper .checkbox-label:active::after {
  background-color: hsl(var(--hue-base) 40% 20% / 0.5);
}

.checkbox-wrapper label,
.checkbox-wrapper .checkbox-label {
  color: var(--color-text);
  line-height: var(--size);
  cursor: pointer;
  position: relative;
  font-size: 1rem;
  z-index: 2;
}

.checkbox-wrapper label:after,
.checkbox-wrapper .checkbox-label:after {
  content: "";
  height: var(--size);
  width: var(--size);
  margin-right: 8px;
  float: left;
  border: 2px solid var(--color-accent);
  border-radius: 3px;
  transition: 0.15s all ease-out;
}

.checkbox-wrapper svg {
  stroke: var(--color-accent);
  stroke-width: 3px;
  height: 0;
  width: calc(var(--size) * 0.6);
  position: absolute;
  left: calc(var(--size) * 0.21);
  top: calc(var(--size) * 0.2);
  stroke-dasharray: 33;
  pointer-events: none;
}

@-webkit-keyframes draw-checkbox {
  0% {
    stroke-dashoffset: 33;
  }
  100% {
    stroke-dashoffset: 0;
  }
}

@keyframes draw-checkbox {
  0% {
    stroke-dashoffset: 33;
  }
  100% {
    stroke-dashoffset: 0;
  }
}

/* Meter */
.meter-row {
  display: flex;
  align-items: center;
  gap: var(--gap-md);
}
.meter {
  flex: 1;
  height: 0.4rem;
  background: hsl(var(--hue-base) 30% 20%);
  border-radius: var(--radius-full);
  overflow: hidden;
}
.meter-fill {
  height: 100%;
  width: var(--width, 0%);
  background: var(--gradient-primary);
  transition: width 0.5s ease-out;
}
.strength-text {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  min-width: 7rem;
  text-align: right;
}

/* History List */
.list {
  list-style: none;
  padding: 0;
  margin: 0;
  max-height: none;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--color-accent) transparent;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  will-change: scroll-position;
  transform: translateZ(0);
}

.card.history .list {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: var(--history-row-gap);
  margin-top: var(--gap-sm);
  padding-top: 0.25rem;
  padding-right: 0.5rem;
}

.list::-webkit-scrollbar {
  width: 6px;
}
.list::-webkit-scrollbar-track {
  background: transparent;
}
.list::-webkit-scrollbar-thumb {
  background-color: var(--color-accent);
  border-radius: var(--radius-full);
  border: 2px solid transparent;
  background-clip: content-box;
}
.list::-webkit-scrollbar-thumb:hover {
  background-color: var(--color-accent-2);
}

.history-empty {
  padding: 0.85rem 1rem;
  text-align: center;
  color: var(--color-text-muted);
  border: 1px dashed hsl(var(--hue-base) 30% 40% / 0.4);
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  background: hsl(var(--hue-base) 40% 12% / 0.3);
}

/* Make timestamp more readable */
.list li small {
  font-size: clamp(0.8rem, 1.2vw, 0.95rem);
  color: var(--color-text-muted) !important;
  display: inline-block;
  min-width: 8rem;
  text-align: right;
}

.list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.6rem 0.85rem;
  background: var(--color-surface-1);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.875rem;
  transition: all 0.2s ease;
  position: relative;
  will-change: transform;
  backface-visibility: hidden;
  transform: translateZ(0);
}

.list li > div:last-child {
  display: flex;
  align-items: center;
  gap: var(--gap-md);
}

.list li:hover {
  background: var(--color-surface-2);
  border-color: var(--color-accent);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  z-index: 1;
}

.card.history .list li {
  flex: 0 0
    calc(
      (100% - (var(--history-visible-items) - 1) * var(--history-row-gap)) /
        var(--history-visible-items)
    );
}

/* Tip Section */
.tip-section {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.875rem;
  padding: var(--gap-md) 0;
  flex-shrink: 0;
}

@media (max-width: 1023px) {
  .tip-section {
    display: none;
  }
}

@media (min-width: 1024px) and (max-width: 1279px) and (max-height: 800px) {
  .tip-section {
    display: none;
  }
}

/* Footer */
.footer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  text-align: center;
  color: var(--color-text-muted);
  font-size: clamp(0.65rem, 1.8vw, 0.875rem);
  margin-top: auto;
  flex-shrink: 0;
  padding: var(--gap-md) clamp(0.75rem, 4vw, 1.25rem) 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  width: 100%;
  box-sizing: border-box;
}

.footer p {
  margin: 0;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  justify-content: center;
  min-width: 0;
  flex: 1 1 auto;
  overflow: hidden;
  text-overflow: ellipsis;
}

.footer a {
  color: var(--color-text);
  text-decoration: none;
  border-bottom: 1px solid var(--color-accent);
  white-space: nowrap;
}

@media (max-width: 48rem) {
  .card.history {
    min-height: clamp(20rem, 50vh, 28rem);
    max-height: clamp(20rem, 50vh, 28rem);
  }

  .card.history .list {
    flex: 1 1 auto;
    min-height: 0;
    display: flex;
    flex-direction: column;
    gap: var(--history-row-gap);
    overflow-y: auto;
  }

  .card.history .list li {
    flex: 0 0 auto;
  }
}

@media (max-width: 36rem) {
  .app {
    min-width: 0;
    padding-left: clamp(0.75rem, 5vw, 1rem);
    padding-right: clamp(0.75rem, 5vw, 1rem);
  }

  body {
    padding-left: 0;
    padding-right: 0;
  }

  .hero {
    gap: 0.25rem;
  }

  .controls {
    margin-top: var(--gap-md);
  }
}

@media (max-width: 40rem) {
  .card {
    padding: 1.25rem;
  }
  .meter-row {
    flex-direction: column;
    align-items: stretch;
    gap: 0.5rem;
  }
  .strength-text {
    text-align: left;
  }
}

/* Slider Checkbox Styles */
.slider-checkbox .switch {
  display: none;
}

.slider-checkbox .switch + label {
  align-items: center;
  color: var(--color-text-muted);
  cursor: pointer;
  display: flex;
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  font-size: 0.8rem;
  font-weight: 500;
  line-height: 1.2;
  position: relative;
  user-select: none;
  transition: color 0.2s ease;
}

.slider-checkbox .switch + label:hover {
  color: var(--color-text);
}

.slider-checkbox .switch + label::before,
.slider-checkbox .switch + label::after {
  content: "";
  display: block;
}

.slider-checkbox .switch + label::before {
  background: linear-gradient(
    135deg,
    hsl(var(--hue-base) 50% 12%),
    hsl(var(--hue-base) 40% 8%)
  );
  border: 1.5px solid hsl(var(--hue-base) 30% 25%);
  border-radius: 500px;
  height: 18px;
  margin-right: 10px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  width: 34px;
  box-shadow: inset 0 2px 4px hsl(var(--hue-base) 50% 5% / 0.4);
}

.slider-checkbox .switch + label::after {
  background: linear-gradient(135deg, hsl(0 0% 95%), hsl(0 0% 85%));
  border-radius: 50%;
  box-shadow: 0 2px 4px hsl(0 0% 0% / 0.2), 0 1px 2px hsl(0 0% 0% / 0.1),
    inset 0 -1px 1px hsl(0 0% 100% / 0.5);
  height: 14px;
  left: 2px;
  position: absolute;
  top: 2px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  width: 14px;
}

.slider-checkbox .switch + label .switch-x-text {
  display: block;
  margin-right: 0.5em;
  letter-spacing: 0.02em;
}

.slider-checkbox .switch + label .switch-x-toggletext {
  display: flex;
  align-items: center;
  font-weight: 600;
  font-size: 0.7rem;
  height: 18px;
  overflow: hidden;
  position: relative;
  width: 28px;
  letter-spacing: 0.01em;
}

.slider-checkbox .switch + label .switch-x-unchecked,
.slider-checkbox .switch + label .switch-x-checked {
  display: flex;
  align-items: center;
  left: 0;
  position: absolute;
  top: 0;
  width: 100%;
  height: 100%;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
    opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.slider-checkbox .switch + label .switch-x-unchecked {
  opacity: 1;
  transform: translateY(0);
  color: hsl(0 0% 50%);
}

.slider-checkbox .switch + label .switch-x-checked {
  opacity: 0;
  transform: translateY(100%);
  color: hsl(var(--hue-warning) 100% 55%);
}

.slider-checkbox .switch + label .switch-x-hiddenlabel {
  position: absolute;
  visibility: hidden;
}

.slider-checkbox .switch:checked + label::before {
  background: linear-gradient(
    135deg,
    hsl(var(--hue-warning) 100% 55%),
    hsl(var(--hue-warning) 100% 45%)
  );
  border-color: hsl(var(--hue-warning) 100% 40%);
  box-shadow: 0 0 8px hsl(var(--hue-warning) 100% 50% / 0.4),
    inset 0 1px 2px hsl(var(--hue-warning) 100% 60% / 0.3);
}

.slider-checkbox .switch:checked + label::after {
  background: linear-gradient(135deg, hsl(0 0% 100%), hsl(0 0% 95%));
  transform: translateX(16px);
  box-shadow: 0 2px 6px hsl(0 0% 0% / 0.3), 0 1px 3px hsl(0 0% 0% / 0.2),
    inset 0 -1px 1px hsl(0 0% 100% / 0.6);
}

.slider-checkbox .switch:checked + label .switch-x-unchecked {
  opacity: 0;
  transform: translateY(-100%);
}

.slider-checkbox .switch:checked + label .switch-x-checked {
  opacity: 1;
  transform: translateY(0);
}

.slider-checkbox .switch:focus-visible + label::before {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.slider-checkbox .switch + label:active::before {
  transform: scale(0.95);
}

/* Username Controls */
.username-styles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr));
  gap: var(--gap-md);
  margin-bottom: var(--gap-md);
}

.username-style-option {
  padding: 0.75rem 0.95rem;
  border-radius: var(--radius-md);
  border: 1.5px solid hsl(var(--hue-base) 30% 35% / 0.35);
  background: linear-gradient(
    135deg,
    hsl(var(--hue-base) 40% 12% / 0.85),
    hsl(var(--hue-base) 35% 8% / 0.9)
  );
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.username-style-option:focus-within {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 1px var(--color-accent-glow);
}

.username-style-option .checkbox-wrapper {
  width: 100%;
}

.username-info,
.passphrase-info {
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.passphrase-info {
  display: flex;
  align-items: center;
  padding: 0.5rem 0;
}

.passphrase-info small {
  line-height: 1.4;
}

/* Strength container visibility */
.strength-container {
  margin-top: var(--gap-md);
}

/* sr-only class for screen reader accessibility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Utility Classes */
.hidden {
  display: none !important;
}

/* Toast Notification */
.toast-notification {
  position: fixed;
  right: 20px;
  bottom: 20px;
  padding: 12px 18px;
  background: linear-gradient(
    135deg,
    hsl(var(--hue-accent) 82% 59% / 0.95),
    hsl(var(--hue-accent-2) 95% 42% / 0.95)
  );
  backdrop-filter: blur(10px);
  border-radius: 12px;
  border: 1px solid hsl(var(--hue-accent) 82% 59% / 0.5);
  color: var(--color-text-inverse);
  font-weight: 600;
  font-size: 0.9rem;
  box-shadow: 0 8px 24px hsl(var(--hue-accent) 80% 60% / 0.4),
    0 0 20px hsl(var(--hue-accent) 80% 60% / 0.3);
  transition: opacity 0.3s ease-out;
  z-index: 12000;
  opacity: 1;
}

.toast-notification.fade-out {
  opacity: 0;
}

/* Advanced Options Overlay */
.overlay {
  position: fixed;
  inset: 0;
  background: hsla(0, 0%, 0%, 0.6);
  backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 11000;
  animation: fadeIn 0.2s ease-out;
}

.overlay-panel {
  background: var(--gradient-surface);
  border-radius: 1rem;
  padding: 1.25rem;
  width: min(40rem, calc(100% - 2rem));
  border: 1px solid hsl(var(--hue-base) 45% 40% / 0.3);
  box-shadow: 0 16px 48px hsla(0, 0%, 0%, 0.45);
}

.overlay-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.35rem;
}

.overlay-close {
  background: transparent;
  border: 1px solid hsl(var(--hue-base) 30% 40% / 0.35);
  color: var(--color-text);
  border-radius: var(--radius-md);
  width: 2.25rem;
  height: 2.25rem;
  font-size: 1.25rem;
  cursor: pointer;
}

.overlay-close:hover {
  border-color: var(--color-accent);
  color: var(--color-text-inverse);
  background: hsl(var(--hue-base) 40% 20% / 0.45);
}

.overlay-desc {
  color: var(--color-text-muted);
  margin: 0 0 0.85rem;
  line-height: 1.5;
}

.advanced-options-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
  gap: 0.65rem;
  margin-bottom: 1rem;
}

.adv-option {
  display: grid;
  grid-template-columns: auto 1fr;
  column-gap: 0.6rem;
  row-gap: 0.1rem;
  align-items: flex-start;
  padding: 0.75rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface-1);
}

.adv-option input {
  margin-top: 0.25rem;
}

.option-title {
  font-weight: 700;
  color: var(--color-text);
}

.option-hint {
  grid-column: 2;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.overlay-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

/* Confirm Dialog */
.confirm-overlay {
  position: fixed;
  inset: 0;
  background: hsla(0, 0%, 0%, 0.7);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  animation: fadeIn 0.2s ease-out;
}

.confirm-overlay.fade-out {
  animation: fadeOut 0.2s ease-out forwards;
}

.confirm-dialog {
  background: var(--gradient-surface);
  border-radius: 16px;
  padding: 2rem;
  max-width: 400px;
  width: 90%;
  border: 1px solid hsl(var(--hue-accent) 82% 59% / 0.3);
  box-shadow: 0 20px 60px hsla(0, 0%, 0%, 0.5),
    0 0 40px hsl(var(--hue-accent) 80% 60% / 0.2);
  animation: slideUp 0.3s ease-out;
}

.confirm-dialog.slide-down {
  animation: slideDown 0.2s ease-out forwards;
}

.confirm-message {
  color: var(--color-text);
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
  text-align: center;
  line-height: 1.5;
}

.confirm-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
}

.confirm-btn-cancel {
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  border: 1px solid hsl(var(--hue-base) 30% 40% / 0.3);
  background: hsl(var(--hue-base) 40% 20% / 0.5);
  color: var(--color-text);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
}

.confirm-btn-confirm {
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  border: none;
  background: var(--gradient-primary);
  color: var(--color-text-inverse);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 0 4px 12px hsl(var(--hue-accent) 80% 60% / 0.3);
  font-family: inherit;
  outline: none;
}

/* Install Prompt */
.install-prompt {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: linear-gradient(
    135deg,
    hsl(var(--hue-base) 40% 16% / 0.95),
    hsl(var(--hue-base) 35% 10% / 0.98)
  );
  border: 1px solid hsl(var(--hue-accent) 82% 59% / 0.3);
  border-radius: 12px;
  padding: 16px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  z-index: 10000;
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 300px;
  animation: slideUp 0.4s ease-out;
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}

.install-prompt.closing {
  opacity: 0;
  transform: translateY(20px);
}

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

.install-title {
  margin: 0;
  font-size: 1rem;
  color: var(--color-text-inverse);
}

.install-close {
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 0;
}

.install-text {
  margin: 0;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.4;
}

.install-btn {
  background: var(--gradient-primary);
  border: none;
  border-radius: 6px;
  color: var(--color-text-inverse);
  padding: 8px 12px;
  font-weight: 600;
  cursor: pointer;
  margin-top: 4px;
}

/* Install Dialog (Promise-based) */
.install-dialog-box {
  background: var(--gradient-surface);
  border-radius: 16px;
  padding: 1.75rem;
  max-width: 420px;
  width: 90%;
  border: 1px solid hsl(var(--hue-accent) 82% 59% / 0.3);
  box-shadow: 0 20px 60px hsla(0, 0%, 0%, 0.5),
    0 0 40px hsl(var(--hue-accent) 80% 60% / 0.2);
  animation: slideUp 0.25s ease-out;
}

.install-dialog-message {
  color: var(--color-text);
  font-size: 1.05rem;
  margin-bottom: 1.25rem;
  text-align: center;
  line-height: 1.5;
}

.install-dialog-actions {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
}

.install-dialog-btn-later {
  padding: 0.7rem 1.4rem;
  border-radius: 10px;
  border: 1px solid hsl(var(--hue-base) 30% 40% / 0.3);
  background: hsl(var(--hue-base) 40% 20% / 0.5);
  color: var(--color-text);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
}

.install-dialog-btn-install {
  padding: 0.7rem 1.5rem;
  border-radius: 10px;
  border: none;
  background: var(--gradient-primary);
  color: var(--color-text-inverse);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  font-family: inherit;
  box-shadow: 0 10px 25px hsl(var(--hue-accent) 80% 60% / 0.35);
}