/* ==========================================================================
   DotMail Studio - Design System & Stylesheet
   Modern Cyber/Glassmorphic Dark Theme with Neon Gradients
   ========================================================================== */

:root {
  /* Core Color Palette */
  --bg-dark: #07090e;
  --bg-card: rgba(15, 22, 36, 0.7);
  --bg-card-hover: rgba(22, 32, 52, 0.85);
  --bg-input: rgba(10, 15, 26, 0.8);
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-active: rgba(99, 102, 241, 0.4);
  --border-glow: rgba(6, 182, 212, 0.4);

  /* Neon Accent Gradients */
  --accent-cyan: #06b6d4;
  --accent-blue: #3b82f6;
  --accent-indigo: #6366f1;
  --accent-violet: #8b5cf6;
  --accent-emerald: #10b981;
  --accent-rose: #f43f5e;
  --accent-amber: #f59e0b;

  --gradient-brand: linear-gradient(135deg, #06b6d4 0%, #6366f1 50%, #a855f7 100%);
  --gradient-button: linear-gradient(135deg, #4f46e5 0%, #06b6d4 100%);
  --gradient-card: linear-gradient(180deg, rgba(255, 255, 255, 0.04) 0%, rgba(255, 255, 255, 0) 100%);

  /* Typography */
  --font-main: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Text Colors */
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-inverse: #030712;

  /* Shadows & Glass */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 25px rgba(99, 102, 241, 0.25);
  --glass-blur: blur(16px);

  /* Layout */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  --transition-fast: 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.28s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Reset & Base Setup */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  color-scheme: dark;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Ambient Animated Glows */
.ambient-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.35;
  animation: floatAmbient 18s ease-in-out infinite alternate;
}

.glow-1 {
  width: 550px;
  height: 550px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.4) 0%, rgba(0, 0, 0, 0) 70%);
  top: -150px;
  left: 10%;
}

.glow-2 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.35) 0%, rgba(0, 0, 0, 0) 70%);
  top: 35%;
  right: 5%;
  animation-delay: -6s;
}

.glow-3 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(168, 85, 247, 0.3) 0%, rgba(0, 0, 0, 0) 70%);
  bottom: 5%;
  left: 20%;
  animation-delay: -12s;
}

@keyframes floatAmbient {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(40px, 30px) scale(1.08); }
  100% { transform: translate(-30px, -20px) scale(0.95); }
}

/* App Wrapper */
.app-wrapper {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Header & Nav */
.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  background: rgba(7, 9, 14, 0.75);
  border-bottom: 1px solid var(--border-subtle);
  padding: 0.9rem 1.5rem;
}

.header-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo-group {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
}

.logo-icon-box {
  position: relative;
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(6, 182, 212, 0.2));
  border: 1px solid rgba(99, 102, 241, 0.4);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  box-shadow: 0 0 15px rgba(6, 182, 212, 0.25);
}

.logo-dot-indicator {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 7px;
  height: 7px;
  background: #10b981;
  border-radius: 50%;
  box-shadow: 0 0 8px #10b981;
  animation: pulseDot 2s infinite;
}

@keyframes pulseDot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.3); opacity: 0.7; }
}

.logo-text-box {
  display: flex;
  flex-direction: column;
}

.logo-title {
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #fff;
  line-height: 1.15;
}

.logo-badge {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--accent-cyan);
  text-transform: uppercase;
}

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

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 600;
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
}

.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.06);
}

/* Main Container */
.main-container {
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

/* Hero Section */
.hero-section {
  text-align: center;
  max-width: 840px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.1rem;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.35rem 1rem;
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  color: #c7d2fe;
}

.badge-pulse {
  width: 8px;
  height: 8px;
  background-color: var(--accent-cyan);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent-cyan);
  animation: pulseDot 2s infinite;
}

.hero-headline {
  font-size: 2.8rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
}

.gradient-text {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.hero-subtitle strong {
  color: #e2e8f0;
}

/* Card System */
.card {
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition-normal);
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--gradient-card);
  pointer-events: none;
}

.card:hover {
  border-color: rgba(255, 255, 255, 0.14);
}

.card-header {
  padding: 1.5rem 1.75rem 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.card-title-group {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.icon-circle {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-indigo);
  flex-shrink: 0;
}

.icon-circle.accent-cyan {
  background: rgba(6, 182, 212, 0.15);
  border-color: rgba(6, 182, 212, 0.3);
  color: var(--accent-cyan);
}

.icon-circle.accent-violet {
  background: rgba(139, 92, 246, 0.15);
  border-color: rgba(139, 92, 246, 0.3);
  color: var(--accent-violet);
}

.icon-circle.accent-emerald {
  background: rgba(16, 185, 129, 0.15);
  border-color: rgba(16, 185, 129, 0.3);
  color: var(--accent-emerald);
}

.card-title {
  font-size: 1.18rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.25;
}

.card-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.card-body {
  padding: 1.75rem;
}

/* Presets Bar */
.presets-badge-container {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.presets-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
}

.preset-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: #cbd5e1;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 0.28rem 0.6rem;
  cursor: pointer;
  transition: var(--transition-fast);
}

.preset-btn:hover {
  background: rgba(99, 102, 241, 0.2);
  border-color: var(--border-active);
  color: #fff;
}

/* Form Inputs */
.input-form-grid {
  margin-bottom: 1.75rem;
}

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

.input-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
}

.helper-note {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
}

.input-affix-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.3);
}

.input-affix-wrapper:focus-within {
  border-color: var(--accent-indigo);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.25), inset 0 2px 4px rgba(0, 0, 0, 0.3);
}

.input-prefix {
  padding-left: 1rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
}

.modern-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-primary);
  padding: 0.9rem 0.75rem;
}

.modern-input::placeholder {
  color: #475569;
  font-weight: 400;
}

.input-suffix {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--accent-cyan);
  padding-right: 0.75rem;
  user-select: none;
}

.clear-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 0.5rem 0.9rem 0.5rem 0.3rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-fast);
}

.clear-btn:hover {
  color: var(--accent-rose);
}

.input-feedback {
  font-size: 0.8rem;
  min-height: 1.2rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.input-feedback.error {
  color: #fb7185;
}

.input-feedback.valid {
  color: #34d399;
}

/* Options & Toggles */
.options-container {
  margin-bottom: 2rem;
}

.options-heading {
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.toggles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.25rem;
}

.toggle-card {
  background: rgba(11, 17, 30, 0.6);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: var(--transition-normal);
}

.toggle-card.active {
  border-color: rgba(99, 102, 241, 0.45);
  background: rgba(18, 26, 45, 0.75);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.toggle-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
}

.toggle-info {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.toggle-title-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.toggle-icon {
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
}

.toggle-name {
  font-size: 0.96rem;
  font-weight: 700;
  color: var(--text-primary);
}

.toggle-desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.toggle-desc code {
  font-family: var(--font-mono);
  background: rgba(255, 255, 255, 0.08);
  padding: 0.1rem 0.3rem;
  border-radius: 4px;
  color: var(--accent-cyan);
}

/* Modern Switch / Toggle */
.switch {
  position: relative;
  display: inline-block;
  width: 48px;
  height: 26px;
  flex-shrink: 0;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #334155;
  border-radius: 26px;
  transition: var(--transition-fast);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.slider::before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background-color: #ffffff;
  border-radius: 50%;
  transition: var(--transition-fast);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

input:checked + .slider {
  background: linear-gradient(135deg, var(--accent-indigo), var(--accent-cyan));
  border-color: transparent;
}

input:checked + .slider::before {
  transform: translateX(22px);
}

/* Expansion panels inside toggle cards */
.toggle-expansion {
  display: none;
  padding-top: 0.85rem;
  border-top: 1px solid var(--border-subtle);
  animation: fadeIn 0.25s ease-out;
}

.toggle-card.active .toggle-expansion {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

.sub-option-row {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.sub-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.custom-select, .mini-select {
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-main);
  font-size: 0.85rem;
  padding: 0.5rem 0.75rem;
  outline: none;
  cursor: pointer;
  transition: var(--transition-fast);
}

.custom-select:focus, .mini-select:focus {
  border-color: var(--accent-indigo);
}

/* Plus trick sub tabs */
.plus-config-tabs {
  display: flex;
  gap: 0.4rem;
  background: rgba(0, 0, 0, 0.25);
  padding: 0.25rem;
  border-radius: var(--radius-sm);
  margin-bottom: 0.75rem;
}

.tab-btn {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.35rem 0.5rem;
  border-radius: 5px;
  cursor: pointer;
  transition: var(--transition-fast);
}

.tab-btn.active {
  background: rgba(99, 102, 241, 0.3);
  color: var(--text-primary);
}

.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
}

.tag-chips-wrapper {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.chip-label {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.chips-container {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.chip {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  padding: 0.25rem 0.65rem;
  cursor: pointer;
  transition: var(--transition-fast);
}

.chip:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

.chip.active {
  background: rgba(6, 182, 212, 0.2);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  font-weight: 600;
}

.sequence-inputs {
  display: flex;
  gap: 0.75rem;
}

.seq-group {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.mini-input {
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 0.45rem 0.65rem;
  outline: none;
}

.mini-input.full-width {
  width: 100%;
}

.mini-input:focus {
  border-color: var(--accent-indigo);
}

.domain-mode-selector {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.domain-mode-selector label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
}

/* Action Footer & Stats Overview */
.action-footer-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-subtle);
}

.stats-overview {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.stat-bubble {
  background: rgba(10, 15, 26, 0.7);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.6rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.stat-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
}

.primary-btn {
  background: var(--gradient-button);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-md);
  padding: 0.9rem 1.8rem;
  font-family: var(--font-main);
  font-size: 1rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  cursor: pointer;
  box-shadow: 0 4px 18px rgba(79, 70, 229, 0.35);
  transition: var(--transition-fast);
}

.primary-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(6, 182, 212, 0.45);
}

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

.pulse-glow {
  animation: pulseGlow 3s infinite;
}

@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 15px rgba(99, 102, 241, 0.3); }
  50% { box-shadow: 0 0 25px rgba(6, 182, 212, 0.55); }
}

/* Results Section */
.results-card {
  display: flex;
  flex-direction: column;
}

.results-toolbar {
  padding: 1.5rem 1.75rem;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.results-title-group {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.results-heading {
  font-size: 1.25rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.results-badge {
  background: rgba(6, 182, 212, 0.15);
  color: var(--accent-cyan);
  border: 1px solid rgba(6, 182, 212, 0.3);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
}

.results-subheading {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.results-actions-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

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

.search-icon {
  position: absolute;
  left: 0.75rem;
  color: var(--text-muted);
  pointer-events: none;
}

.search-field {
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.85rem;
  padding: 0.5rem 2rem 0.5rem 2.2rem;
  width: 220px;
  outline: none;
  transition: var(--transition-fast);
}

.search-field:focus {
  border-color: var(--accent-indigo);
  width: 260px;
}

.mini-clear-btn {
  position: absolute;
  right: 0.6rem;
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1.1rem;
  line-height: 1;
}

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

.action-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.84rem;
  font-weight: 600;
  padding: 0.5rem 0.85rem;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  cursor: pointer;
  transition: var(--transition-fast);
}

.action-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
}

.export-btn {
  background: rgba(99, 102, 241, 0.15);
  border-color: rgba(99, 102, 241, 0.35);
  color: #c7d2fe;
}

.export-btn:hover {
  background: rgba(99, 102, 241, 0.25);
}

/* Dropdown */
.dropdown-wrapper {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  background: #0f172a;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 0.4rem;
  min-width: 200px;
  z-index: 50;
  display: none;
  flex-direction: column;
  gap: 0.2rem;
  backdrop-filter: var(--glass-blur);
}

.dropdown-menu.show {
  display: flex;
  animation: fadeIn 0.15s ease-out;
}

.dropdown-item {
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.55rem 0.75rem;
  border-radius: var(--radius-sm);
  text-align: left;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  cursor: pointer;
  transition: var(--transition-fast);
}

.dropdown-item:hover {
  background: rgba(99, 102, 241, 0.2);
  color: #fff;
}

.file-badge {
  background: rgba(255, 255, 255, 0.08);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.15rem 0.35rem;
  border-radius: 4px;
  color: var(--accent-cyan);
}

/* Alert Banner */
.alert-banner {
  margin: 1.25rem 1.75rem 0;
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: var(--radius-md);
  padding: 0.85rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.85rem;
  color: #fde68a;
  font-size: 0.86rem;
}

/* Results Grid */
.results-grid {
  padding: 1.5rem 1.75rem;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 0.75rem;
  min-height: 240px;
}

.email-item-pill {
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.7rem 0.95rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
  cursor: pointer;
  transition: var(--transition-fast);
  user-select: none;
}

.email-item-pill:hover {
  background: rgba(30, 41, 59, 0.85);
  border-color: var(--accent-indigo);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.email-item-pill:active {
  transform: scale(0.98);
}

.email-item-text {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: #f1f5f9;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.email-item-index {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-right: 0.4rem;
}

.email-copy-icon {
  color: var(--text-muted);
  display: flex;
  align-items: center;
  flex-shrink: 0;
  transition: var(--transition-fast);
}

.email-item-pill:hover .email-copy-icon {
  color: var(--accent-cyan);
}

.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.empty-state svg {
  color: #334155;
}

/* Pagination Bar */
.pagination-bar {
  padding: 1.25rem 1.75rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.page-info {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.page-buttons {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.page-nav-btn, .page-num-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 0.4rem 0.75rem;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  cursor: pointer;
  transition: var(--transition-fast);
}

.page-num-btn {
  min-width: 34px;
  justify-content: center;
  font-family: var(--font-mono);
}

.page-num-btn.active {
  background: var(--accent-indigo);
  border-color: var(--accent-indigo);
  color: #ffffff;
}

.page-nav-btn:hover:not(:disabled), .page-num-btn:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
}

.page-nav-btn:disabled, .page-num-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.page-size-selector {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Simulator Section */
.simulator-pipeline {
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: 1rem;
  position: relative;
}

.pipeline-step {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.step-badge {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  text-align: center;
}

.step-card {
  background: rgba(11, 17, 30, 0.85);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  height: 100%;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  box-shadow: var(--shadow-sm);
}

.mock-browser-header {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--border-subtle);
}

.mock-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.mock-dot.red { background: #ef4444; }
.mock-dot.yellow { background: #f59e0b; }
.mock-dot.green { background: #10b981; }

.mock-url {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-left: 0.3rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.mock-form-content {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.mock-label {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.mock-field-highlight {
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(6, 182, 212, 0.4);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  color: #38bdf8;
  word-break: break-all;
}

.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
}

.status-chip.success {
  background: rgba(16, 185, 129, 0.12);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.sim-action-btn {
  background: var(--gradient-button);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.9rem;
  font-family: var(--font-main);
  font-size: 0.82rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  cursor: pointer;
  transition: var(--transition-fast);
  margin-top: 0.4rem;
}

.sim-action-btn:hover {
  filter: brightness(1.15);
  transform: translateY(-1px);
}

/* Server Card */
.server-card {
  border-color: rgba(99, 102, 241, 0.3);
}

.server-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--accent-indigo);
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--border-subtle);
}

.server-logs {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  line-height: 1.4;
}

.log-dim {
  color: var(--text-muted);
}

.log-code {
  color: #cbd5e1;
}

.log-success {
  color: #34d399;
  font-weight: 600;
}

.log-highlight {
  color: var(--accent-cyan);
  font-weight: 700;
}

/* Inbox Card */
.inbox-card {
  border-color: rgba(16, 185, 129, 0.3);
}

.inbox-card.received-anim {
  animation: inboxFlash 1.2s ease-out;
}

@keyframes inboxFlash {
  0% { box-shadow: 0 0 0 rgba(16, 185, 129, 0); border-color: rgba(16, 185, 129, 0.3); }
  30% { box-shadow: 0 0 30px rgba(16, 185, 129, 0.6); border-color: #10b981; }
  100% { box-shadow: 0 0 0 rgba(16, 185, 129, 0); border-color: rgba(16, 185, 129, 0.3); }
}

.inbox-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--border-subtle);
}

.inbox-title {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  color: #e2e8f0;
}

.unread-pill {
  background: var(--accent-rose);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 700;
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-full);
}

.inbox-mail-preview {
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: var(--radius-sm);
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.mail-sender-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
}

.sender-name {
  font-weight: 700;
  color: #f1f5f9;
}

.mail-time {
  color: var(--text-muted);
}

.mail-subject {
  font-size: 0.82rem;
  color: #e2e8f0;
}

.code-highlight {
  background: rgba(245, 158, 11, 0.2);
  border: 1px solid rgba(245, 158, 11, 0.4);
  color: #fcd34d;
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

.mail-to-indicator {
  font-size: 0.7rem;
  color: var(--text-muted);
}

.alias-tag {
  color: var(--accent-cyan);
  font-family: var(--font-mono);
}

/* Pipeline Arrows & Animated Packets */
.pipeline-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  width: 40px;
  position: relative;
  flex-shrink: 0;
}

.animated-packet {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 10px var(--accent-cyan);
  opacity: 0;
}

.animating .animated-packet {
  animation: packetTravel 0.8s ease-in-out forwards;
}

@keyframes packetTravel {
  0% { left: 0; opacity: 1; transform: scale(1); }
  80% { opacity: 1; }
  100% { left: 100%; opacity: 0; transform: scale(1.4); }
}

/* Two Column Tools Section */
.two-col-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 1.75rem;
}

.tool-card .card-body {
  padding: 1.5rem;
}

/* Normalizer Tool */
.normalizer-box {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.mini-action-btn {
  background: var(--accent-indigo);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  padding: 0.5rem 1rem;
  margin-right: 0.4rem;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition-fast);
}

.mini-action-btn:hover {
  background: #4f46e5;
}

.normalizer-output {
  background: rgba(10, 15, 26, 0.7);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.breakdown-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.86rem;
}

.breakdown-label {
  color: var(--text-muted);
}

.breakdown-value {
  font-family: var(--font-mono);
  font-size: 0.95rem;
}

.breakdown-tag {
  font-family: var(--font-mono);
  background: rgba(99, 102, 241, 0.15);
  color: #a5b4fc;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  font-size: 0.8rem;
}

.breakdown-count {
  font-family: var(--font-mono);
  color: var(--accent-emerald);
  font-weight: 600;
}

.breakdown-badge {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  background: rgba(255, 255, 255, 0.06);
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  color: var(--accent-cyan);
}

/* Gmail Filter Builder */
.filter-helper-box {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

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

.filter-query-card {
  background: rgba(10, 15, 26, 0.8);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.9rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.filter-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.query-code-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
}

.query-code-row code {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  color: #38bdf8;
  word-break: break-all;
}

.mini-copy-btn {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: #e2e8f0;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.35rem 0.65rem;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  cursor: pointer;
  flex-shrink: 0;
  transition: var(--transition-fast);
}

.mini-copy-btn:hover {
  background: rgba(99, 102, 241, 0.3);
  border-color: var(--accent-indigo);
  color: #fff;
}

.pro-tip {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  background: rgba(99, 102, 241, 0.08);
  border: 1px dashed rgba(99, 102, 241, 0.3);
  border-radius: var(--radius-md);
  padding: 0.8rem 1rem;
  font-size: 0.8rem;
  color: #cbd5e1;
  line-height: 1.45;
}

.tip-icon {
  font-size: 1.1rem;
}

/* FAQ Grid */
.faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.faq-item {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.faq-q {
  font-size: 0.98rem;
  font-weight: 700;
  color: #f1f5f9;
}

.faq-a {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.faq-a code {
  font-family: var(--font-mono);
  background: rgba(255, 255, 255, 0.08);
  color: var(--accent-cyan);
  padding: 0.1rem 0.3rem;
  border-radius: 4px;
}

/* Footer */
.app-footer {
  margin-top: auto;
  border-top: 1px solid var(--border-subtle);
  background: rgba(7, 9, 14, 0.9);
  padding: 2rem 1.5rem;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-copy {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-tags {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.footer-tag {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 0.25rem 0.65rem;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  pointer-events: none;
}

.toast {
  background: #0f172a;
  border: 1px solid var(--accent-cyan);
  border-radius: var(--radius-md);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5), 0 0 15px rgba(6, 182, 212, 0.3);
  color: #fff;
  padding: 0.85rem 1.25rem;
  font-size: 0.88rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.65rem;
  pointer-events: auto;
  animation: toastSlideIn 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  transition: opacity 0.3s, transform 0.3s;
}

.toast.hide {
  opacity: 0;
  transform: translateY(12px) scale(0.95);
}

.toast-icon {
  color: var(--accent-cyan);
  display: flex;
}

@keyframes toastSlideIn {
  from { opacity: 0; transform: translateY(20px) scale(0.9); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

/* Responsive Media Queries */
@media (max-width: 900px) {
  .simulator-pipeline {
    flex-direction: column;
  }
  .pipeline-arrow {
    width: 100%;
    height: 30px;
    transform: rotate(90deg);
  }
  .hero-headline {
    font-size: 2.2rem;
  }
  .results-toolbar {
    flex-direction: column;
    align-items: flex-start;
  }
  .results-actions-group {
    width: 100%;
  }
  .search-field {
    width: 100%;
  }
  .search-field:focus {
    width: 100%;
  }
  .nav-links {
    display: none;
  }
}

@media (max-width: 600px) {
  .hero-headline {
    font-size: 1.8rem;
  }
  .main-container {
    padding: 1.5rem 1rem 3rem;
  }
  .card-header {
    padding: 1.25rem 1rem;
  }
  .card-body {
    padding: 1.25rem 1rem;
  }
  .toggles-grid {
    grid-template-columns: 1fr;
  }
  .action-footer-row {
    flex-direction: column;
    align-items: stretch;
  }
  .primary-btn {
    width: 100%;
    justify-content: center;
  }
  .stats-overview {
    justify-content: space-between;
    width: 100%;
  }
  .stat-bubble {
    flex: 1;
    min-width: 80px;
    padding: 0.5rem;
  }
}