/* ============================================================
   VARIABLES Y SISTEMA DE DISEÑO (FIJATE TOOLS)
   ============================================================ */
:root {
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-title: 'Outfit', var(--font-sans);
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;

  /* Tema Oscuro (Predeterminado) */
  --bg-main: #0b0f17;
  --bg-surface: #111827;
  --bg-card: #182234;
  --bg-card-hover: #1f2d42;
  --bg-input: #0e1524;
  --border-color: rgba(255, 255, 255, 0.09);
  --border-hover: rgba(255, 133, 7, 0.4);

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  /* Acentos de Marca y Seguridad */
  --accent-orange: #ff8507;
  --accent-orange-hover: #e07200;
  --accent-blue: #3b82f6;
  --accent-green: #10b981;
  --accent-purple: #8b5cf6;
  --accent-red: #ef4444;

  /* Niveles de Seguridad */
  --color-weak: #ef4444;
  --color-medium: #f59e0b;
  --color-strong: #3b82f6;
  --color-ultra: #10b981;

  /* Coloreado semántico de caracteres */
  --char-upper: #60a5fa;
  --char-lower: #f8fafc;
  --char-number: #fbbf24;
  --char-symbol: #34d399;
  --char-sep: #f472b6;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 26px;

  --shadow-card: 0 10px 25px -5px rgba(0, 0, 0, 0.35), 0 8px 10px -6px rgba(0, 0, 0, 0.25);
  --shadow-glow: 0 0 25px -5px rgba(255, 133, 7, 0.25);
}

[data-theme="light"] {
  --bg-main: #f8fafc;
  --bg-surface: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #f1f5f9;
  --bg-input: #f8fafc;
  --border-color: #e2e8f0;
  --border-hover: rgba(255, 133, 7, 0.6);

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;

  --char-upper: #2563eb;
  --char-lower: #0f172a;
  --char-number: #d97706;
  --char-symbol: #059669;
  --char-sep: #db2777;

  --shadow-card: 0 10px 25px -5px rgba(0, 0, 0, 0.06), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
  --shadow-glow: 0 0 20px -5px rgba(255, 133, 7, 0.2);
}

/* ============================================================
   RESETS Y TIPOGRAFÍA BASE
   ============================================================ */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-main);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

/* Contenedor central de la aplicación */
.app-layout {
  max-width: 1080px;
  margin: 0 auto;
  padding: 2rem 1.5rem 5rem 1.5rem;
  width: 100%;
  flex: 1;
}

/* ============================================================
   CABECERA PRINCIPAL (.app-header)
   ============================================================ */
.app-header {
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.header-container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0.85rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.btn-back-tools {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.86rem;
  font-weight: 500;
  transition: all 0.2s ease;
}

.btn-back-tools:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
  border-color: var(--accent-orange);
  transform: translateX(-2px);
}

.brand-area {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-logo-box {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  background: rgba(255, 133, 7, 0.12);
  color: var(--accent-orange);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 133, 7, 0.25);
}

.brand-text {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.brand-title {
  font-family: var(--font-title);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.brand-badge {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.2rem 0.5rem;
  border-radius: 9999px;
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.btn-header-action {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: inherit;
}

.btn-header-action:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
  border-color: rgba(255, 255, 255, 0.2);
}

.history-count-badge {
  background: var(--accent-orange);
  color: #ffffff;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.1rem 0.45rem;
  border-radius: 9999px;
}

.theme-toggle-btn {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
}

.theme-toggle-btn:hover {
  border-color: var(--accent-orange);
  transform: scale(1.05);
}

/* ============================================================
   INTRO Y HERO
   ============================================================ */
.tool-intro {
  text-align: center;
  padding: 2rem 1rem 2.2rem 1rem;
}

.privacy-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  background: rgba(16, 185, 129, 0.12);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.25);
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.tool-intro h1 {
  font-family: var(--font-title);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.2;
  margin-bottom: 0.75rem;
  background: linear-gradient(135deg, #ffffff 40%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

[data-theme="light"] .tool-intro h1 {
  background: linear-gradient(135deg, #0f172a 40%, #475569 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.tool-subtitle {
  max-width: 680px;
  margin: 0 auto;
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* ============================================================
   PANTALLA DE VISUALIZACIÓN DE CONTRASEÑA
   ============================================================ */
.password-display-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 1.75rem;
  box-shadow: var(--shadow-card), var(--shadow-glow);
  margin-bottom: 2.2rem;
  position: relative;
  overflow: hidden;
}

.display-top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.2rem;
}

.display-meta {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.meta-badge {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.meta-badge-entropy {
  color: var(--accent-orange);
  background: rgba(255, 133, 7, 0.1);
  border-color: rgba(255, 133, 7, 0.25);
}

.display-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-icon-action {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-icon-action:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
  border-color: var(--accent-orange);
  transform: scale(1.06);
}

.btn-icon-action:active {
  transform: scale(0.96);
}

.spin-icon {
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.btn-icon-action:hover .spin-icon {
  transform: rotate(180deg);
}

/* Pantalla de Contraseña */
.password-screen {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.25rem;
  min-height: 84px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
  user-select: all;
  margin-bottom: 1.25rem;
}

.password-screen:hover {
  border-color: var(--accent-orange);
  background: rgba(255, 133, 7, 0.03);
}

.password-rendered-text {
  font-family: var(--font-mono);
  font-size: clamp(1.2rem, 3.2vw, 1.85rem);
  font-weight: 700;
  letter-spacing: 0.08em;
  word-break: break-all;
  line-height: 1.35;
}

.password-hidden-input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
  width: 0;
  height: 0;
}

/* Resaltado sintáctico de caracteres */
.char-upper { color: var(--char-upper); }
.char-lower { color: var(--char-lower); }
.char-number { color: var(--char-number); }
.char-symbol { color: var(--char-symbol); }
.char-sep { color: var(--char-sep); font-weight: 800; }
.char-masked { color: var(--text-muted); letter-spacing: 0.2em; }

/* Barra de Fuerza y Entropía */
.strength-container {
  margin-bottom: 1.5rem;
}

.strength-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.6rem;
  font-size: 0.85rem;
  flex-wrap: wrap;
}

.strength-label {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--text-secondary);
}

.strength-text {
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.78rem;
  letter-spacing: 0.05em;
}

.text-weak { color: var(--color-weak); }
.text-medium { color: var(--color-medium); }
.text-strong { color: var(--color-strong); }
.text-ultra { color: var(--color-ultra); }

.crack-time-estimate {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--text-secondary);
  font-size: 0.82rem;
}

.crack-time-estimate strong {
  color: var(--text-primary);
}

.strength-bar-track {
  width: 100%;
  height: 8px;
  background: var(--bg-card);
  border-radius: 9999px;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.strength-bar-fill {
  height: 100%;
  transition: width 0.3s cubic-bezier(0.16, 1, 0.3, 1), background-color 0.3s ease;
  border-radius: 9999px;
}

.bar-weak { background: var(--color-weak); }
.bar-medium { background: var(--color-medium); }
.bar-strong { background: var(--color-strong); }
.bar-ultra { background: var(--color-ultra); box-shadow: 0 0 10px rgba(16, 185, 129, 0.5); }

/* Barra inferior del Display */
.display-bottom-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding-top: 0.5rem;
}

.btn-copy-main {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.85rem 1.8rem;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--accent-orange) 0%, #ea580c 100%);
  color: #ffffff;
  border: none;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 4px 15px rgba(255, 133, 7, 0.3);
}

.btn-copy-main:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(255, 133, 7, 0.45);
}

.btn-copy-main:active {
  transform: translateY(0);
}

.shortcut-tip {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.shortcut-tip kbd {
  font-family: var(--font-mono);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  color: var(--text-secondary);
  font-size: 0.74rem;
}

/* ============================================================
   PESTAÑAS DE MODOS Y WORKSPACE
   ============================================================ */
.generator-workspace {
  margin-bottom: 2.5rem;
}

.mode-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  overflow-x: auto;
  padding-bottom: 0.3rem;
  scrollbar-width: thin;
}

.mode-tab {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.2rem;
  border-radius: var(--radius-md);
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s ease;
  font-family: inherit;
}

.mode-tab:hover {
  background: var(--bg-card);
  color: var(--text-primary);
  border-color: rgba(255, 255, 255, 0.15);
}

.mode-tab.active {
  background: var(--accent-orange);
  color: #ffffff;
  border-color: var(--accent-orange);
  box-shadow: 0 4px 12px rgba(255, 133, 7, 0.25);
}

/* Tarjeta de Control (Sliders y Números) */
.control-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-card);
}

.control-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.control-label {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  cursor: pointer;
}

.control-label span:first-child {
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-primary);
}

.control-sublabel {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.length-input-box {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.35rem 0.6rem;
}

.number-input-compact {
  width: 54px;
  background: transparent;
  border: none;
  color: var(--accent-orange);
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  text-align: right;
  outline: none;
}

.unit-tag {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Range Slider Personalizado */
.range-slider-wrapper {
  position: relative;
  padding: 0.5rem 0;
}

.range-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 8px;
  background: var(--bg-card);
  border-radius: 9999px;
  outline: none;
  border: 1px solid var(--border-color);
  cursor: pointer;
}

.range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--accent-orange);
  cursor: pointer;
  border: 3px solid var(--bg-surface);
  box-shadow: 0 0 10px rgba(255, 133, 7, 0.4);
  transition: transform 0.15s ease;
}

.range-slider::-webkit-slider-thumb:hover {
  transform: scale(1.18);
}

.range-slider::-moz-range-thumb {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--accent-orange);
  cursor: pointer;
  border: 3px solid var(--bg-surface);
  box-shadow: 0 0 10px rgba(255, 133, 7, 0.4);
  transition: transform 0.15s ease;
}

.slider-ticks {
  display: flex;
  justify-content: space-between;
  margin-top: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
}

/* Opciones en Cuadrícula (Toggles) */
.options-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
}

.custom-toggle-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  cursor: pointer;
  transition: all 0.2s ease;
  user-select: none;
}

.custom-toggle-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.15);
}

.toggle-content {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.toggle-title {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-primary);
}

.toggle-desc {
  font-size: 0.76rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.custom-checkbox {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-indicator {
  width: 44px;
  height: 24px;
  background: var(--bg-card);
  border-radius: 9999px;
  position: relative;
  border: 1px solid var(--border-color);
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.toggle-indicator::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--text-secondary);
  transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.custom-checkbox:checked + .toggle-indicator {
  background: var(--accent-orange);
  border-color: var(--accent-orange);
}

.custom-checkbox:checked + .toggle-indicator::after {
  transform: translateX(20px);
  background: #ffffff;
}

/* Selector estilizado */
.custom-select-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.custom-select {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.86rem;
  padding: 0.45rem 0.8rem;
  outline: none;
  font-family: inherit;
}

/* ============================================================
   SECCIONES ADICIONALES (BATCH, AUDITOR, FAQ)
   ============================================================ */
.tool-section-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 1.75rem;
  margin-bottom: 2.2rem;
  box-shadow: var(--shadow-card);
}

.section-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.2rem;
  flex-wrap: wrap;
}

.section-card-title {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--text-primary);
}

.section-card-title h2 {
  font-family: var(--font-title);
  font-size: 1.2rem;
  font-weight: 700;
}

.section-card-title svg {
  color: var(--accent-orange);
}

.card-badge-secure {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.25rem 0.6rem;
  border-radius: 9999px;
  background: rgba(16, 185, 129, 0.12);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.section-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 1.25rem;
}

/* Batch Controls */
.batch-controls {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.batch-select-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.custom-select-compact {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.85rem;
  padding: 0.45rem 0.7rem;
  outline: none;
  font-family: inherit;
}

.btn-secondary-action {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.5rem 0.95rem;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.2s ease;
}

.btn-secondary-action:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-orange);
}

.batch-results-wrapper {
  margin-top: 1.5rem;
  border-top: 1px solid var(--border-color);
  padding-top: 1.25rem;
}

.batch-results-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  gap: 1rem;
  flex-wrap: wrap;
}

.batch-info-text {
  font-size: 0.86rem;
  color: var(--text-secondary);
}

.batch-btn-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-batch-action {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.2s ease;
}

.btn-batch-action:hover {
  color: var(--text-primary);
  border-color: var(--accent-orange);
}

.batch-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-height: 360px;
  overflow-y: auto;
  padding-right: 0.25rem;
}

.batch-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.65rem 1rem;
  transition: all 0.2s ease;
}

.batch-item:hover {
  border-color: rgba(255, 133, 7, 0.4);
}

.batch-item-text {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 600;
  word-break: break-all;
}

.btn-batch-item-copy {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  padding: 0.25rem;
  transition: color 0.2s ease;
}

.btn-batch-item-copy:hover {
  color: var(--accent-orange);
}

/* Auditor de Contraseñas Propias */
.checker-input-wrapper {
  margin-bottom: 1.5rem;
}

.checker-input-box {
  position: relative;
  display: flex;
  align-items: center;
}

.checker-input {
  width: 100%;
  padding: 1rem 3.5rem 1rem 1.25rem;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 1.05rem;
  outline: none;
  transition: all 0.2s ease;
}

.checker-input:focus {
  border-color: var(--accent-orange);
  box-shadow: 0 0 0 3px rgba(255, 133, 7, 0.15);
}

.btn-checker-toggle {
  position: absolute;
  right: 1rem;
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
}

.btn-checker-toggle:hover {
  color: var(--text-primary);
}

.checker-metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.metric-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.metric-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.metric-val {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.checker-feedback-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ============================================================
   SECCIÓN FAQ
   ============================================================ */
.faq-section {
  margin-top: 2rem;
  padding: 2.5rem 1.5rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-card);
}

.faq-section h2 {
  font-family: var(--font-title);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
  text-align: center;
}

.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

@media (max-width: 800px) {
  .faq-grid {
    grid-template-columns: 1fr;
  }
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}

.faq-item h3 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  line-height: 1.4;
}

.faq-item h3 svg {
  color: var(--accent-orange);
  flex-shrink: 0;
  margin-top: 2px;
}

.faq-item p {
  font-size: 0.86rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* ============================================================
   MODALES PERSONALIZADOS (SIN ALERTS)
   ============================================================ */
.custom-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 1.5rem;
}

.custom-modal-dialog {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 600px;
  box-shadow: var(--shadow-card);
  animation: modalScaleUp 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
}

.custom-modal-sm {
  max-width: 440px;
}

@keyframes modalScaleUp {
  from { opacity: 0; transform: scale(0.94) translateY(10px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.custom-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.custom-modal-title {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--text-primary);
}

.custom-modal-title h3 {
  font-size: 1.1rem;
  font-weight: 700;
}

.btn-modal-close {
  background: transparent;
  border: none;
  font-size: 1.5rem;
  color: var(--text-muted);
  cursor: pointer;
  line-height: 1;
  padding: 0.2rem;
  transition: color 0.2s ease;
}

.btn-modal-close:hover {
  color: var(--text-primary);
}

.custom-modal-body {
  padding: 1.5rem;
  max-height: 60vh;
  overflow-y: auto;
}

.modal-notice {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  color: var(--text-muted);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 0.6rem 0.85rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1rem;
}

.history-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.history-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.65rem 0.9rem;
}

.history-item-content {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.history-item-pwd {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  font-weight: 600;
}

.history-item-time {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.empty-history-text {
  text-align: center;
  padding: 2rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.custom-modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.75rem;
  padding: 1.1rem 1.5rem;
  border-top: 1px solid var(--border-color);
  background: rgba(0, 0, 0, 0.1);
}

.btn-modal-secondary {
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-size: 0.86rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.2s ease;
}

.btn-modal-secondary:hover {
  background: var(--bg-card-hover);
}

.btn-modal-danger {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius-sm);
  background: var(--accent-red);
  border: none;
  color: #ffffff;
  font-size: 0.86rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.2s ease;
}

.btn-modal-danger:hover {
  background: #dc2626;
}

/* Toast flotante */
.toast-notification {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: #10b981;
  color: #ffffff;
  padding: 0.75rem 1.4rem;
  border-radius: 9999px;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  font-weight: 600;
  box-shadow: 0 10px 25px rgba(16, 185, 129, 0.35);
  z-index: 2000;
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
}

.toast-notification.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* ============================================================
   RESPONSIVIDAD MÓVIL
   ============================================================ */
@media (max-width: 680px) {
  .app-layout {
    padding: 1.25rem 1rem 4rem 1rem;
  }

  .header-container {
    padding: 0.75rem 1rem;
  }

  .btn-text-desktop {
    display: none;
  }

  .password-display-card {
    padding: 1.25rem 1rem;
  }

  .display-bottom-bar {
    flex-direction: column;
    align-items: stretch;
  }

  .btn-copy-main {
    width: 100%;
  }

  .shortcut-tip {
    text-align: center;
  }

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