/* ============================================================
   PASSFORGE PREMIUM — DESIGN SYSTEM
   BEM Architecture: Block__Element--Modifier
   ============================================================ */

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

/* ───────────────────────── TOKENS ────────────────────────── */
:root {
  /* Surfaces */
  --color-bg:           #07080d;
  --color-surface:      #0e1018;
  --color-surface-2:    #161a24;
  --color-surface-3:    #1e2230;
  --color-surface-4:    #252a3a;

  /* Borders */
  --color-border:       rgba(255, 255, 255, 0.06);
  --color-border-hover: rgba(255, 255, 255, 0.12);
  --color-border-active:rgba(139, 92, 246, 0.55);

  /* Brand palette */
  --color-accent:       #8b5cf6;
  --color-accent-2:     #06b6d4;
  --color-accent-pink:  #ec4899;
  --color-accent-glow:  rgba(139, 92, 246, 0.3);
  --color-accent-glow-2:rgba(6, 182, 212, 0.2);

  /* Semantic */
  --color-success:      #10b981;
  --color-warning:      #f59e0b;
  --color-danger:       #ef4444;
  --color-orange:       #f97316;

  /* Text */
  --color-text:         #f0f4ff;
  --color-text-2:       #8b92a9;
  --color-text-3:       #454d66;
  --color-text-muted:   #2e3447;

  /* Radii */
  --radius-xl:  20px;
  --radius-lg:  14px;
  --radius-md:  10px;
  --radius-sm:  7px;

  /* Shadows */
  --shadow-card: 0 32px 80px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 40px var(--color-accent-glow);

  /* Typography */
  --font-sans: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;

  /* Transitions */
  --transition-fast:   0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-slow:   0.4s ease;
  --transition-spring: 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Light theme */
[data-theme="light"] {
  --color-bg:           #f0f2f8;
  --color-surface:      #ffffff;
  --color-surface-2:    #f5f6fa;
  --color-surface-3:    #eceef5;
  --color-surface-4:    #e3e5ef;
  --color-border:       rgba(0, 0, 0, 0.07);
  --color-border-hover: rgba(0, 0, 0, 0.13);
  --color-text:         #111827;
  --color-text-2:       #4b5563;
  --color-text-3:       #9ca3af;
  --color-text-muted:   #d1d5db;
  --shadow-card: 0 20px 60px rgba(0, 0, 0, 0.1);
}

/* ───────────────────────── BASE ──────────────────────────── */
html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px 16px;
  overflow-x: hidden;
  transition: background var(--transition-slow), color var(--transition-slow);
}

a { color: var(--color-accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ─────────────────── BACKGROUND ORBS ─────────────────────── */
/* Block: bg-orbs */
.bg-orbs {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

/* Element: bg-orbs__orb */
.bg-orbs__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.12;
  animation: orb-drift 22s ease-in-out infinite;
}

/* Modifiers */
.bg-orbs__orb--1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle at 40% 40%, var(--color-accent), transparent 70%);
  top: -200px; left: -150px;
  animation-duration: 24s;
}
.bg-orbs__orb--2 {
  width: 500px; height: 500px;
  background: radial-gradient(circle at 60% 60%, var(--color-accent-2), transparent 70%);
  bottom: -120px; right: -100px;
  animation-duration: 20s;
  animation-delay: -8s;
}
.bg-orbs__orb--3 {
  width: 350px; height: 350px;
  background: radial-gradient(circle at 50% 50%, var(--color-accent-pink), transparent 70%);
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  animation-duration: 28s;
  animation-delay: -14s;
}

@keyframes orb-drift {
  0%,  100% { transform: translate(0, 0) scale(1); }
  25%        { transform: translate(40px, -50px) scale(1.05); }
  50%        { transform: translate(-30px, 40px) scale(0.95); }
  75%        { transform: translate(20px, 20px) scale(1.02); }
}

/* ──────────────────────── APP LAYOUT ─────────────────────── */
/* Block: app */
.app {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 580px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* ──────────────────────── APP HEADER ─────────────────────── */
/* Block: app-header */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 2px;
}

/* Element: app-header__actions */
.app-header__actions {
  display: flex;
  gap: 8px;
}

/* ──────────────────────── BRAND ───────────────────────────── */
/* Block: brand */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

/* Element: brand__icon */
.brand__icon {
  width: 42px; height: 42px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-2));
  border-radius: 13px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 22px var(--color-accent-glow);
  transition: box-shadow var(--transition-normal), transform var(--transition-spring);
}
.brand__icon:hover { transform: rotate(-6deg) scale(1.05); box-shadow: 0 0 32px var(--color-accent-glow); }
.brand__icon svg { width: 21px; height: 21px; color: white; }

/* Element: brand__name */
.brand__name {
  font-size: 1.65rem;
  font-weight: 800;
  background: linear-gradient(135deg, #c4b5fd 10%, #67e8f9 90%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.6px;
}

/* Element: brand__badge */
.brand__badge {
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  border: 1px solid rgba(139,92,246,0.4);
  background: rgba(139,92,246,0.1);
  border-radius: 99px;
  padding: 2px 8px;
  align-self: flex-start;
  margin-top: 4px;
}

/* ──────────────────────── HEADER BTN ─────────────────────── */
/* Block: header-btn */
.header-btn {
  width: 38px; height: 38px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface-2);
  color: var(--color-text-2);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}
.header-btn svg { width: 16px; height: 16px; }
.header-btn:hover {
  background: var(--color-surface-3);
  border-color: var(--color-border-hover);
  color: var(--color-text);
  transform: scale(1.05);
}
.header-btn:active { transform: scale(0.95); }

/* Element: header-btn__icon (moon/sun) */
.header-btn__icon { display: block; }

/* Modifier: header-btn--danger */
.header-btn--danger:hover {
  background: rgba(239,68,68,0.12);
  border-color: rgba(239,68,68,0.4);
  color: var(--color-danger);
}

/* ──────────────────────── TAB NAV ────────────────────────── */
/* Block: tab-nav */
.tab-nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 5px;
  gap: 4px;
  box-shadow: var(--shadow-card);
}

/* Element: tab-nav__tab */
.tab-nav__tab {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 10px 12px;
  border: none;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--color-text-3);
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
}
.tab-nav__tab svg { width: 14px; height: 14px; }
.tab-nav__tab:hover { color: var(--color-text-2); background: var(--color-surface-2); }

/* Modifier: tab-nav__tab--active */
.tab-nav__tab--active {
  background: linear-gradient(135deg, rgba(139,92,246,0.2), rgba(6,182,212,0.1));
  color: var(--color-text);
  border: 1px solid var(--color-border-active);
  box-shadow: 0 0 18px rgba(139,92,246,0.1);
}

/* Element: tab-nav__badge */
.tab-nav__badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent);
  color: white;
  font-size: 0.6rem;
  font-weight: 700;
  min-width: 16px;
  height: 16px;
  padding: 0 4px;
  border-radius: 99px;
}

/* ──────────────────────── TAB PANEL ──────────────────────── */
/* Block: tab-panel */
.tab-panel { display: none; }

/* Modifier: tab-panel--active */
.tab-panel--active { display: flex; flex-direction: column; gap: 14px; }

/* ──────────────────────── CARD ───────────────────────────── */
/* Block: card */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 28px 28px 24px;
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(24px);
  display: flex;
  flex-direction: column;
  gap: 22px;
  transition: background var(--transition-slow), border-color var(--transition-slow);
}

/* ──────────────────────── MODE SELECTOR ──────────────────── */
/* Block: mode-selector */
.mode-selector {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 5px;
}

/* Element: mode-selector__btn */
.mode-selector__btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  padding: 10px 6px;
  border: none;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--color-text-3);
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
}
.mode-selector__btn svg { width: 18px; height: 18px; }
.mode-selector__btn:hover { color: var(--color-text-2); background: var(--color-surface-3); }

/* Modifier: mode-selector__btn--active */
.mode-selector__btn--active {
  background: linear-gradient(135deg, rgba(139,92,246,0.25), rgba(6,182,212,0.12));
  color: var(--color-text);
  border: 1px solid var(--color-border-active);
  box-shadow: 0 0 16px rgba(139,92,246,0.12);
}

/* ─────────────── PASSWORD DISPLAY SECTION ─────────────────── */
.password-display-section {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* Block: password-display */
.password-display {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  min-height: 68px;
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}
.password-display:hover {
  border-color: var(--color-border-hover);
  box-shadow: 0 0 0 1px rgba(255,255,255,0.03);
}

/* Element: password-display__text */
.password-display__text {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  word-break: break-all;
  flex: 1;
  letter-spacing: 0.05em;
  transition: color var(--transition-normal);
}

/* Modifier: password-display__text--placeholder */
.password-display__text--placeholder {
  color: var(--color-text-3);
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 0.88rem;
  letter-spacing: normal;
}

/* Modifier: password-display__text--masked */
.password-display__text--masked {
  font-size: 0.75rem;       /* bullets are wide — reduce size so they fit */
  letter-spacing: 0.15em;
  color: var(--color-accent);
  opacity: 0.7;
  user-select: none;        /* can't accidentally select/copy the bullets */
}

/* Element: password-display__actions */
.password-display__actions {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}

/* ──────────────────────── ICON BTN ───────────────────────── */
/* Block: icon-btn */
.icon-btn {
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface-3);
  color: var(--color-text-2);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}
.icon-btn svg { width: 14px; height: 14px; }
.icon-btn:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: white;
  transform: scale(1.08);
  box-shadow: 0 0 14px var(--color-accent-glow);
}
.icon-btn:active { transform: scale(0.94); }

/* Modifier: icon-btn--export */
.icon-btn--export { background: rgba(139,92,246,0.08); }

/* ─────────────────── STRENGTH METER ──────────────────────── */
/* Block: strength-meter */
.strength-meter {
  display: flex;
  flex-direction: column;
  gap: 7px;
  transition: opacity var(--transition-slow);
}

/* Element: strength-meter__track */
.strength-meter__track {
  height: 5px;
  background: var(--color-surface-3);
  border-radius: 99px;
  overflow: hidden;
}

/* Element: strength-meter__bar */
.strength-meter__bar {
  height: 100%;
  border-radius: 99px;
  width: 0%;
  transition: width 0.55s cubic-bezier(0.34, 1.56, 0.64, 1), background var(--transition-normal);
}
.strength-meter__bar.weak    { background: var(--color-danger);   width: 20%; }
.strength-meter__bar.fair    { background: var(--color-orange);   width: 40%; }
.strength-meter__bar.good    { background: var(--color-warning);  width: 60%; }
.strength-meter__bar.strong  { background: var(--color-success);  width: 80%; }
.strength-meter__bar.extreme { background: linear-gradient(90deg, var(--color-accent), var(--color-accent-2)); width: 100%; }

/* Element: strength-meter__info */
.strength-meter__info {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Element: strength-meter__label */
.strength-meter__label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.strength-meter__label.weak    { color: var(--color-danger); }
.strength-meter__label.fair    { color: var(--color-orange); }
.strength-meter__label.good    { color: var(--color-warning); }
.strength-meter__label.strong  { color: var(--color-success); }
.strength-meter__label.extreme {
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Element: strength-meter__entropy */
.strength-meter__entropy {
  font-size: 0.72rem;
  color: var(--color-text-3);
}

/* ──────────────────────── CONTROL GROUP ──────────────────── */
/* Block: control-group */
.control-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* Element: control-group__header */
.control-group__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Element: control-group__label */
.control-group__label {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--color-text-2);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* Element: control-group__value */
.control-group__value {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-accent);
  min-width: 28px;
  text-align: right;
}

/* ──────────────────────── SLIDER ─────────────────────────── */
/* Block: slider (single element, used as input) */
.slider {
  width: 100%;
  height: 6px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--color-surface-3);
  border-radius: 99px;
  outline: none;
  cursor: pointer;
}
.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-2));
  cursor: pointer;
  box-shadow: 0 0 12px var(--color-accent-glow), 0 2px 6px rgba(0,0,0,0.4);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}
.slider::-webkit-slider-thumb:hover {
  transform: scale(1.25);
  box-shadow: 0 0 22px var(--color-accent-glow), 0 2px 8px rgba(0,0,0,0.5);
}

/* Element: slider__marks */
.slider__marks {
  display: flex;
  justify-content: space-between;
  margin-top: 5px;
}
.slider__marks span {
  font-size: 0.68rem;
  color: var(--color-text-3);
}

/* ──────────────────────── CHAR TOGGLE GRID ───────────────── */
/* Block: char-grid */
.char-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

/* Block: char-toggle */
.char-toggle { cursor: pointer; }
.char-toggle input { display: none; }

/* Element: char-toggle__inner */
.char-toggle__inner {
  background: var(--color-surface-2);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: all var(--transition-normal);
  user-select: none;
}
.char-toggle input:checked ~ .char-toggle__inner {
  border-color: var(--color-accent);
  background: rgba(139,92,246,0.09);
  box-shadow: 0 0 16px rgba(139,92,246,0.12);
}
.char-toggle:hover .char-toggle__inner {
  border-color: var(--color-border-hover);
}

/* Element: char-toggle__sample */
.char-toggle__sample {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
}
.char-toggle input:checked ~ .char-toggle__inner .char-toggle__sample {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Element: char-toggle__name */
.char-toggle__name {
  font-size: 0.72rem;
  color: var(--color-text-3);
  font-weight: 500;
}

/* ──────────────────────── OPTION LIST ─────────────────────── */
/* Block: option-list */
.option-list {
  display: flex;
  flex-direction: column;
  background: var(--color-surface-2);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  overflow: hidden;
}

/* Element: option-list__item */
.option-list__item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 13px 16px;
  cursor: pointer;
  transition: background var(--transition-fast);
  border-bottom: 1px solid var(--color-border);
}
.option-list__item:last-child { border-bottom: none; }
.option-list__item:hover { background: rgba(255,255,255,0.025); }

/* Element: option-list__text */
.option-list__text {
  font-size: 0.85rem;
  color: var(--color-text-2);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Element: option-list__hint */
.option-list__hint {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--color-text-3);
}

/* ──────────────────────── PILL SWITCH ─────────────────────── */
/* Block: pill-switch */
.pill-switch {
  position: relative;
  width: 44px;
  height: 24px;
  flex-shrink: 0;
}
.pill-switch input { display: none; }

/* Element: pill-switch__thumb */
.pill-switch__thumb {
  position: absolute;
  inset: 0;
  background: var(--color-surface-3);
  border-radius: 99px;
  border: 1.5px solid var(--color-border);
  cursor: pointer;
  transition: all var(--transition-normal);
}
.pill-switch__thumb::after {
  content: '';
  position: absolute;
  top: 2px; left: 2px;
  width: 16px; height: 16px;
  background: var(--color-text-3);
  border-radius: 50%;
  transition: all var(--transition-spring);
}
.pill-switch input:checked ~ .pill-switch__thumb {
  background: rgba(139,92,246,0.22);
  border-color: var(--color-accent);
}
.pill-switch input:checked ~ .pill-switch__thumb::after {
  background: var(--color-accent);
  transform: translateX(20px);
  box-shadow: 0 0 10px var(--color-accent-glow);
}

/* ──────────────── CUSTOM CHARS ────────────────────────────── */
/* Block: custom-chars */
.custom-chars {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

/* Element: custom-chars__field */
.custom-chars__field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

/* Element: custom-chars__label */
.custom-chars__label {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--color-text-3);
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

/* Block: text-input */
.text-input {
  width: 100%;
  height: 38px;
  padding: 0 12px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.text-input::placeholder { color: var(--color-text-3); font-family: var(--font-sans); }
.text-input:focus {
  border-color: var(--color-border-active);
  box-shadow: 0 0 0 3px rgba(139,92,246,0.12);
}

/* ──────────────────────── MODE PANEL ─────────────────────── */
/* Block: mode-panel */
.mode-panel { display: none; flex-direction: column; gap: 18px; }

/* Modifier: mode-panel--active */
.mode-panel--active { display: flex; }

/* ─────────────── SEPARATOR PICKER ────────────────────────── */
/* Block: separator-picker */
.separator-picker {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

/* Element: separator-picker__option */
.separator-picker__option {
  cursor: pointer;
}
.separator-picker__option input { display: none; }
.separator-picker__option span {
  display: block;
  padding: 8px 14px;
  background: var(--color-surface-2);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-2);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.separator-picker__option:hover span { border-color: var(--color-border-hover); color: var(--color-text); }
.separator-picker__option input:checked ~ span {
  background: rgba(139,92,246,0.12);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* ──────────────────────── GENERATE BTN ───────────────────── */
/* Block: generate-btn */
.generate-btn {
  position: relative;
  width: 100%;
  padding: 17px;
  border: none;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-2));
  color: white;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  overflow: hidden;
  transition: transform var(--transition-fast), box-shadow var(--transition-normal);
  box-shadow: 0 0 32px rgba(139,92,246,0.35), 0 6px 20px rgba(0,0,0,0.3);
  letter-spacing: 0.02em;
}
.generate-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 48px rgba(139,92,246,0.5), 0 10px 30px rgba(0,0,0,0.4);
}
.generate-btn:active {
  transform: translateY(1px);
  box-shadow: 0 0 16px rgba(139,92,246,0.2);
}

/* Element: generate-btn__text */
.generate-btn__text { position: relative; z-index: 1; }

/* Element: generate-btn__shimmer */
.generate-btn__shimmer {
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, transparent 38%, rgba(255,255,255,0.18) 50%, transparent 62%);
  transform: translateX(-100%);
  animation: shimmer 2.8s ease-in-out infinite;
}
@keyframes shimmer {
  0%   { transform: translateX(-100%); }
  60%, 100% { transform: translateX(100%); }
}

/* ──────────────────────── BATCH ──────────────────────────── */
/* Block: batch */
.batch {
  border-top: 1px solid var(--color-border);
  padding-top: 18px;
  margin-top: -4px;
}

/* Element: batch__toggle */
.batch__toggle {
  background: none;
  border: none;
  color: var(--color-text-2);
  font-family: var(--font-sans);
  font-size: 0.83rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0;
  width: 100%;
  transition: color var(--transition-fast);
}
.batch__toggle svg { width: 15px; height: 15px; }
.batch__toggle:hover { color: var(--color-text); }

/* Element: batch__chevron */
.batch__chevron {
  margin-left: auto;
  width: 14px;
  transition: transform var(--transition-normal);
}
.batch__toggle.open .batch__chevron { transform: rotate(180deg); }

/* Element: batch__panel */
.batch__panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}
.batch__panel.open { max-height: 620px; }

/* Element: batch__controls */
.batch__controls {
  display: flex;
  align-items: flex-end;
  gap: 14px;
  margin-top: 16px;
}

/* Element: batch__count-group */
.batch__count-group {
  display: flex;
  flex-direction: column;
  gap: 7px;
  flex-shrink: 0;
}

/* Element: batch__generate-btn */
.batch__generate-btn {
  flex: 1;
  height: 36px;
  border: 1px solid var(--color-accent);
  background: rgba(139,92,246,0.08);
  color: var(--color-accent);
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.batch__generate-btn:hover {
  background: var(--color-accent);
  color: white;
  box-shadow: 0 0 16px var(--color-accent-glow);
}

/* Element: batch__list */
.batch__list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 12px;
}

/* Block: batch-item (dynamically created) */
.batch-item {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  animation: slide-in 0.22s ease forwards;
}
@keyframes slide-in {
  from { opacity: 0; transform: translateY(-7px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Elements of batch-item */
.batch-item__number {
  font-size: 0.68rem;
  color: var(--color-text-3);
  font-weight: 700;
  min-width: 16px;
}
.batch-item__password {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--color-text);
  flex: 1;
  word-break: break-all;
}
.batch-item__copy-btn {
  background: none;
  border: none;
  color: var(--color-text-3);
  cursor: pointer;
  padding: 2px;
  display: flex;
  align-items: center;
  transition: color var(--transition-fast);
  flex-shrink: 0;
}
.batch-item__copy-btn:hover { color: var(--color-accent); }
.batch-item__copy-btn svg { width: 13px; height: 13px; }

/* Element: batch__copy-all-btn */
.batch__copy-all-btn {
  margin-top: 10px;
  width: 100%;
  padding: 10px;
  background: none;
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-3);
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all var(--transition-fast);
}
.batch__copy-all-btn svg { width: 13px; height: 13px; }
.batch__copy-all-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: rgba(139,92,246,0.05);
}

/* ─────────────────── STEPPER ──────────────────────────────── */
/* Block: stepper */
.stepper {
  display: flex;
  align-items: center;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

/* Element: stepper__btn */
.stepper__btn {
  width: 34px; height: 36px;
  background: none;
  border: none;
  color: var(--color-text-2);
  font-size: 1.1rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.stepper__btn:hover { background: var(--color-surface-3); color: var(--color-text); }

#batchCount {
  width: 48px;
  text-align: center;
  background: none;
  border: none;
  border-left: 1px solid var(--color-border);
  border-right: 1px solid var(--color-border);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 600;
  height: 36px;
  outline: none;
}
input[type="number"]::-webkit-inner-spin-button { -webkit-appearance: none; }

/* ─────────────── SECURITY TIP ─────────────────────────────── */
/* Block: security-tip */
.security-tip {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(139,92,246,0.06);
  border: 1px solid rgba(139,92,246,0.18);
  border-radius: var(--radius-md);
  padding: 11px 16px;
}

/* Element: security-tip__icon */
.security-tip__icon { font-size: 1rem; }

/* Element: security-tip__text */
.security-tip__text {
  font-size: 0.82rem;
  color: var(--color-text-2);
  line-height: 1.4;
}

/* ──────────────────────── STATS BAR ──────────────────────── */
/* Block: stats-bar */
.stats-bar {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  transition: opacity var(--transition-slow);
  box-shadow: var(--shadow-card);
}

/* Element: stats-bar__item */
.stats-bar__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  flex: 1;
}

/* Element: stats-bar__label */
.stats-bar__label {
  font-size: 0.62rem;
  color: var(--color-text-3);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
}

/* Element: stats-bar__value */
.stats-bar__value {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-text);
}

/* Element: stats-bar__divider */
.stats-bar__divider {
  width: 1px;
  height: 28px;
  background: var(--color-border);
  flex-shrink: 0;
}

/* ─────────────── SECTION HEADER ───────────────────────────── */
/* Block: section-header */
.section-header { margin-bottom: 4px; }

/* Element: section-header__title */
.section-header__title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 4px;
}

/* Element: section-header__subtitle */
.section-header__subtitle {
  font-size: 0.83rem;
  color: var(--color-text-2);
}

/* ─────────────────── CHECKER ──────────────────────────────── */
/* Block: checker */
.checker {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* Element: checker__input-group */
.checker__input-group {
  display: flex;
  gap: 8px;
  align-items: center;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 4px 6px 4px 16px;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.checker__input-group:focus-within {
  border-color: var(--color-border-active);
  box-shadow: 0 0 0 3px rgba(139,92,246,0.1);
}

/* Element: checker__input */
.checker__input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 0.92rem;
  padding: 10px 0;
}
.checker__input::placeholder { color: var(--color-text-3); font-family: var(--font-sans); }

/* Elements: checker__eye */
.checker__eye { display: block; }

/* Modifier: checker__eye--closed */
.checker__eye--closed { display: none; }

/* Element: checker__clear-btn */
.checker__clear-btn {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-3);
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 500;
  padding: 6px 14px;
  cursor: pointer;
  align-self: flex-start;
  transition: all var(--transition-fast);
}
.checker__clear-btn:hover {
  border-color: var(--color-danger);
  color: var(--color-danger);
  background: rgba(239,68,68,0.06);
}

/* ─────────────────── ANALYSIS GRID ───────────────────────── */
/* Block: analysis-grid */
.analysis-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 14px;
}

/* Block: analysis-card */
.analysis-card {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  transition: border-color var(--transition-fast);
}
.analysis-card:hover { border-color: var(--color-border-hover); }

/* Element: analysis-card__icon */
.analysis-card__icon { font-size: 1.2rem; }

/* Element: analysis-card__body */
.analysis-card__body {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
}

/* Element: analysis-card__title */
.analysis-card__title {
  font-size: 0.7rem;
  color: var(--color-text-3);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

/* Element: analysis-card__value */
.analysis-card__value {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
}

/* Element: analysis-card__dot */
.analysis-card__dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
  background: var(--color-text-muted);
}
.analysis-card__dot.ok  { background: var(--color-success); box-shadow: 0 0 8px rgba(16,185,129,0.4); }
.analysis-card__dot.bad { background: var(--color-danger);  box-shadow: 0 0 8px rgba(239,68,68,0.4); }
.analysis-card__dot.mid { background: var(--color-warning); box-shadow: 0 0 8px rgba(245,158,11,0.4); }

/* ─────────────── CHAR BREAKDOWN ───────────────────────────── */
/* Block: char-breakdown */
.char-breakdown {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 14px;
}

/* Element: char-breakdown__pills */
.char-breakdown__pills {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

/* char-pill (generated dynamically) */
.char-pill {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 99px;
  border: 1px solid;
}
.char-pill--upper  { color: #a78bfa; border-color: rgba(167,139,250,0.3); background: rgba(167,139,250,0.08); }
.char-pill--lower  { color: #67e8f9; border-color: rgba(103,232,249,0.3); background: rgba(103,232,249,0.08); }
.char-pill--number { color: #fcd34d; border-color: rgba(252,211,77,0.3);  background: rgba(252,211,77,0.08); }
.char-pill--symbol { color: #f9a8d4; border-color: rgba(249,168,212,0.3); background: rgba(249,168,212,0.08); }

/* ─────────────────── CRACK ESTIMATE ──────────────────────── */
/* Block: crack-estimate */
.crack-estimate {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  font-size: 0.85rem;
  color: var(--color-text-2);
  margin-top: 14px;
}
.crack-estimate svg { width: 16px; height: 16px; flex-shrink: 0; color: var(--color-accent-2); }
.crack-estimate strong { color: var(--color-text); font-family: var(--font-mono); margin-left: auto; font-size: 0.9rem; }

/* ─────────────────── SUGGESTIONS ─────────────────────────── */
/* Block: suggestions */
.suggestions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 14px;
  background: rgba(245,158,11,0.05);
  border: 1px solid rgba(245,158,11,0.2);
  border-radius: var(--radius-md);
  padding: 14px 16px;
}

/* Element: suggestions__list */
.suggestions__list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-left: 18px;
}
.suggestions__list li {
  font-size: 0.83rem;
  color: var(--color-text-2);
  line-height: 1.45;
}

/* ─────────────────── HISTORY TOOLBAR ─────────────────────── */
/* Block: history-toolbar */
.history-toolbar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}

/* Element: history-toolbar__actions */
.history-toolbar__actions { display: flex; gap: 8px; }

/* ─────────────────── HISTORY LIST ────────────────────────── */
/* Block: history-list */
.history-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

/* Block: history-item (dynamically created) */
.history-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), background var(--transition-fast);
  animation: slide-in 0.2s ease forwards;
}
.history-item:hover { background: var(--color-surface-3); border-color: var(--color-border-hover); }

/* Elements of history-item */
.history-item__password {
  font-family: var(--font-mono);
  font-size: 0.83rem;
  color: var(--color-text);
  flex: 1;
  word-break: break-all;
}
.history-item__meta {
  font-size: 0.68rem;
  color: var(--color-text-3);
  white-space: nowrap;
}
.history-item__copy-btn {
  background: none;
  border: none;
  color: var(--color-text-3);
  cursor: pointer;
  display: flex;
  align-items: center;
  transition: color var(--transition-fast);
  flex-shrink: 0;
}
.history-item__copy-btn:hover { color: var(--color-accent); }
.history-item__copy-btn svg { width: 14px; height: 14px; }

/* ─────────────────── EMPTY STATE ──────────────────────────── */
/* Block: empty-state */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 40px 20px;
  text-align: center;
  color: var(--color-text-3);
  font-size: 0.88rem;
}

/* Element: empty-state__icon */
.empty-state__icon { font-size: 2.5rem; opacity: 0.5; }

/* Element: empty-state__hint */
.empty-state__hint { font-size: 0.78rem; color: var(--color-text-muted); }

/* ──────────────────────── APP FOOTER ─────────────────────── */
/* Block: app-footer */
.app-footer {
  text-align: center;
  padding: 4px 0 8px;
}
.app-footer p {
  font-size: 0.72rem;
  color: var(--color-text-3);
}
.app-footer a { color: var(--color-text-3); transition: color var(--transition-fast); }
.app-footer a:hover { color: var(--color-accent); text-decoration: none; }

/* ──────────────────────── MODAL ──────────────────────────── */
/* Block: modal */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
  padding: 20px;
  animation: fade-in 0.2s ease;
}
@keyframes fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* Element: modal__box */
.modal__box {
  background: var(--color-surface);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-xl);
  padding: 28px;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 40px 100px rgba(0,0,0,0.6);
  display: flex;
  flex-direction: column;
  gap: 20px;
  animation: scale-in 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}
@keyframes scale-in {
  from { opacity: 0; transform: scale(0.92) translateY(10px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

/* Element: modal__header */
.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Element: modal__title */
.modal__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
}

/* Element: modal__close-btn */
.modal__close-btn {
  width: 32px; height: 32px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface-2);
  color: var(--color-text-2);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}
.modal__close-btn svg { width: 14px; height: 14px; }
.modal__close-btn:hover { background: var(--color-danger); border-color: var(--color-danger); color: white; }

/* Element: modal__qr-container */
.modal__qr-container {
  display: flex;
  justify-content: center;
  padding: 20px;
  background: white;
  border-radius: var(--radius-lg);
}

/* Element: modal__qr-password */
.modal__qr-password {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-text-2);
  text-align: center;
  word-break: break-all;
  line-height: 1.5;
}

/* Element: modal__footer */
.modal__footer { display: flex; justify-content: center; }

/* Element: modal__action-btn */
.modal__action-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-2));
  border: none;
  border-radius: var(--radius-md);
  color: white;
  font-family: var(--font-sans);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: 0 0 20px rgba(139,92,246,0.3);
}
.modal__action-btn svg { width: 15px; height: 15px; }
.modal__action-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 30px rgba(139,92,246,0.45);
}

/* ─────────────────── SHORTCUTS MODAL ──────────────────────── */
/* Block: shortcuts */
.shortcuts { display: flex; flex-direction: column; gap: 4px; }

/* Element: shortcuts__row */
.shortcuts__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.85rem;
  color: var(--color-text-2);
}
.shortcuts__row:last-child { border-bottom: none; }

/* Element: shortcuts__keys */
.shortcuts__keys {
  display: flex;
  gap: 4px;
  flex-shrink: 0;
}

/* kbd element */
kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  height: 24px;
  padding: 0 6px;
  background: var(--color-surface-3);
  border: 1px solid var(--color-border-hover);
  border-bottom-width: 2px;
  border-radius: 5px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--color-text-2);
}

/* ──────────────────────── TOAST ──────────────────────────── */
/* Block: toast */
.toast {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translate(-50%, 24px);
  background: var(--color-surface-3);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-md);
  padding: 11px 22px;
  font-size: 0.85rem;
  color: var(--color-text);
  font-weight: 500;
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  z-index: 100;
  white-space: nowrap;
  box-shadow: 0 12px 36px rgba(0,0,0,0.45);
}

/* Modifier: toast--show */
.toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* ──────────────────── RESPONSIVE ──────────────────────────── */
@media (max-width: 480px) {
  body { padding: 16px 12px; }

  .card { padding: 20px 16px; gap: 18px; }

  .mode-selector { grid-template-columns: repeat(2, 1fr); }
  .mode-selector__btn { flex-direction: row; justify-content: flex-start; padding: 10px 12px; }

  .char-grid { grid-template-columns: 1fr 1fr; gap: 6px; }
  .char-toggle__inner { padding: 12px; }

  .stats-bar { flex-wrap: wrap; gap: 12px; padding: 12px 16px; }
  .stats-bar__divider { display: none; }
  .stats-bar__item { flex: 1 1 40%; }

  .analysis-grid { grid-template-columns: 1fr; }

  .modal__box { padding: 20px 18px; }
}