/* ==========================================================================
   PREMIUM SAAS DESIGN SYSTEM — SUBFINDER
   Official Visual Identity & Component Styles
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. DESIGN TOKENS & CSS VARIABLES
   -------------------------------------------------------------------------- */
:root {
  /* Centralized Brand Color Palette */
  --brand-primary: #D64523;          /* Vibrant vermilion / terracotta brand red */
  --brand-primary-hover: #BF3D1F;    /* Rich deeper crimson red for hover/active */
  --brand-primary-light: #FDF2EE;    /* Soft warm terracotta tint */
  --brand-secondary: #F07340;        /* Warm coral / orange-red secondary accent */
  --brand-secondary-light: #FAF0EB;  /* Subtle warm supporting tint */
  --brand-accent: #A32B10;           /* Deep burgundy / burnt crimson */
  
  /* Brand Neutrals & Surfaces (Dark Theme Default) */
  --brand-dark: #121316;             /* Warm deep charcoal / near black */
  --brand-dark-surface: #18191E;     /* Dark container surface */
  --brand-dark-card: #202128;        /* Dark card background */
  --brand-dark-border: rgba(255, 255, 255, 0.08);

  --bg-main: #121316;
  --bg-surface: #18191E;
  --bg-card: #18191E;
  --bg-card-alt: #202128;
  --bg-card-hover: #22242D;
  --bg-input: #15161B;
  --bg-input-focus: #18191E;

  --border-color: rgba(255, 255, 255, 0.08);
  --border-color-subtle: rgba(255, 255, 255, 0.05);
  --border-color-hover: rgba(214, 69, 35, 0.45);
  --border-color-focus: #D64523;

  --text-primary: #F7F7F8;
  --text-secondary: #9EA0B3;
  --text-muted: #6E7079;
  --text-subtle: #525461;

  --primary-color: #D64523;
  --primary-hover: #BF3D1F;
  --primary-light: rgba(214, 69, 35, 0.15);

  --color-success: #10B981;
  --color-success-bg: rgba(16, 185, 129, 0.12);
  --color-success-border: rgba(16, 185, 129, 0.28);
  
  --color-warning: #F59E0B;
  --color-warning-bg: rgba(245, 158, 11, 0.12);
  --color-warning-border: rgba(245, 158, 11, 0.28);

  --color-danger: #EF4444;
  --color-danger-bg: rgba(239, 68, 68, 0.12);
  --color-danger-border: rgba(239, 68, 68, 0.28);

  --color-info: #0284C7;
  --color-info-bg: rgba(2, 132, 199, 0.12);
  --color-info-border: rgba(2, 132, 199, 0.28);

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #D64523 0%, #F07340 100%);
  --gradient-primary-hover: linear-gradient(135deg, #BF3D1F 0%, #D64523 100%);
  --gradient-dark: linear-gradient(135deg, #121316 0%, #1E1F25 100%);
  --gradient-text: linear-gradient(135deg, #D64523 0%, #F07340 100%);
  --gradient-glow: radial-gradient(circle, rgba(214, 69, 35, 0.15) 0%, rgba(240, 115, 64, 0) 70%);

  /* Typography */
  --font-heading: 'Plus Jakarta Sans', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  /* Shadows */
  --shadow-xs: 0 1px 3px rgba(0, 0, 0, 0.2);
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 10px 24px -6px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 20px 48px -12px rgba(0, 0, 0, 0.45);
  --shadow-red-btn: 0 8px 24px rgba(214, 69, 35, 0.32);
  --shadow-red-btn-hover: 0 12px 32px rgba(214, 69, 35, 0.45);

  /* Radii */
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Light Theme Overrides (Light System) */
[data-theme="light"] {
  --bg-main: #FAF8F6;          /* Clean warm off-white */
  --bg-surface: #FFFFFF;       /* Pure white */
  --bg-card: #FFFFFF;
  --bg-card-alt: #F4F0ED;      /* Clean muted surface */
  --bg-card-hover: #F8F5F2;
  --bg-input: #FAF8F6;
  --bg-input-focus: #FFFFFF;

  --border-color: #EAE5E2;
  --border-color-subtle: #F0ECE9;
  --border-color-hover: rgba(214, 69, 35, 0.32);
  --border-color-focus: #D64523;

  --text-primary: #16171B;     /* Deep charcoal */
  --text-secondary: #6E7079;   /* Balanced slate grey */
  --text-muted: #989AA4;       /* Subtle caption grey */
  --text-subtle: #B4B6C1;

  --primary-light: #FDF2EE;

  --shadow-xs: 0 1px 3px rgba(18, 19, 22, 0.04);
  --shadow-sm: 0 4px 12px rgba(18, 19, 22, 0.05);
  --shadow-md: 0 12px 32px -8px rgba(214, 69, 35, 0.1);
  --shadow-lg: 0 20px 48px -12px rgba(214, 69, 35, 0.14);
}

/* --------------------------------------------------------------------------
   2. GLOBAL RESET & BASE STYLES
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  height: 100%;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-main);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100%;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  position: relative;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Subtle background ambient mesh with Signature red glow */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    radial-gradient(circle at 15% 10%, rgba(214, 69, 35, 0.04) 0%, transparent 45%),
    radial-gradient(circle at 85% 65%, rgba(240, 115, 64, 0.035) 0%, transparent 45%);
  pointer-events: none;
  z-index: 0;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-primary);
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.02em;
}

a {
  color: var(--brand-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--brand-primary-hover);
}

code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  padding: 0.15em 0.4em;
  background: var(--primary-light);
  color: var(--brand-primary);
  border-radius: var(--radius-xs);
  border: 1px solid var(--border-color);
}

/* Gradient Text utility */
.text-gradient {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

/* --------------------------------------------------------------------------
   3. APPLICATION WRAPPER & ECOSYSTEM TOP BAR
   -------------------------------------------------------------------------- */
.app-container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 1.5rem 1.5rem 3rem 1.5rem;
  flex: 1;
  position: relative;
  z-index: 1;
}

/* --------------------------------------------------------------------------
   4. NAVIGATION / SITE HEADER
   -------------------------------------------------------------------------- */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 1.6rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 2.25rem;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 1.15rem;
}

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

.logo-mark {
  width: 42px;
  height: 42px;
  background: var(--gradient-primary);
  color: #FFFFFF;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 14px rgba(214, 69, 35, 0.35);
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.logo-mark.sm {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

.brand-logo-link:hover .logo-mark {
  transform: scale(1.05);
}

.brand-text-block {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-title {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.35rem;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.brand-byline {
  font-family: var(--font-heading);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--brand-primary);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-top: 2px;
}

/* Divider & Tool Indicator */
.brand-divider {
  width: 1px;
  height: 24px;
  background-color: var(--border-color);
}

.tool-category-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  background: var(--bg-card-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  font-size: 0.74rem;
  font-weight: 700;
  font-family: var(--font-heading);
  color: var(--brand-primary);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* Header Action Controls */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Theme Toggle Button */
.theme-toggle-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  background: var(--bg-card-alt);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius-full);
  cursor: pointer;
  font-family: var(--font-heading);
  font-size: 0.84rem;
  font-weight: 600;
  transition: all var(--transition-fast);
  outline: none;
}

.theme-toggle-btn:hover {
  border-color: var(--brand-primary);
  color: var(--text-primary);
  box-shadow: var(--shadow-xs);
  transform: translateY(-1px);
}

.theme-text {
  font-size: 0.84rem;
  font-weight: 600;
  font-family: var(--font-heading);
  line-height: 1;
}

.theme-icon-sun, .theme-icon-moon {
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
}

[data-theme="dark"] .theme-icon-moon { display: none; }
[data-theme="dark"] .theme-icon-sun { display: inline-flex; color: #F59E0B; }
[data-theme="light"] .theme-icon-sun { display: none; }
[data-theme="light"] .theme-icon-moon { display: inline-flex; color: var(--brand-primary); }

/* --------------------------------------------------------------------------
   5. HERO & SEARCH SECTION
   -------------------------------------------------------------------------- */
.hero-section {
  text-align: center;
  max-width: 820px;
  margin: 0 auto 2.25rem auto;
  padding: 0.5rem 1rem 0 1rem;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background-color: var(--primary-light);
  color: var(--brand-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 700;
  font-family: var(--font-heading);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1.25rem;
}

.hero-badge i {
  font-size: 0.85rem;
}

.hero-title {
  font-size: clamp(2.2rem, 4vw, 3.25rem);
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.03em;
  margin-bottom: 0.5rem;
  line-height: 1.15;
}

.hero-byline {
  font-size: 0.82rem;
  font-weight: 700;
  font-family: var(--font-heading);
  color: var(--brand-primary);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.hero-subtitle {
  font-size: 1.12rem;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 680px;
  margin: 0 auto 1.5rem auto;
}

.notice-banner {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.65rem 1.1rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-left: 3px solid var(--brand-primary);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--text-secondary);
  max-width: 760px;
  margin: 0 auto;
  box-shadow: var(--shadow-xs);
  text-align: left;
}

.notice-banner i {
  color: var(--brand-primary);
  font-size: 0.95rem;
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   6. SEARCH CARD COMPONENT (PRIMARY VISUAL FOCUS)
   -------------------------------------------------------------------------- */
.search-card {
  max-width: 860px;
  margin: 0 auto 2.5rem auto;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem 2rem;
  box-shadow: var(--shadow-md);
  position: relative;
  transition: all var(--transition-normal);
}

.search-card:hover {
  border-color: var(--border-color-hover);
  box-shadow: var(--shadow-lg);
}

.search-form {
  display: flex;
  gap: 1rem;
  position: relative;
}

.input-wrapper {
  position: relative;
  flex: 1;
  display: flex;
  align-items: center;
}

.search-icon {
  position: absolute;
  left: 1.25rem;
  width: 20px;
  height: 20px;
  color: var(--text-muted);
  pointer-events: none;
  transition: color var(--transition-fast);
}

.domain-input {
  width: 100%;
  padding: 1rem 3rem 1rem 3.25rem;
  font-family: var(--font-body);
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--text-primary);
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  outline: none;
  transition: all var(--transition-fast);
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.05);
}

.domain-input::placeholder {
  color: var(--text-muted);
}

.domain-input:focus {
  background-color: var(--bg-input-focus);
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 4px rgba(214, 69, 35, 0.16);
}

.domain-input:focus + .search-icon,
.input-wrapper:focus-within .search-icon {
  color: var(--brand-primary);
}

.clear-input-btn {
  position: absolute;
  right: 1rem;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.35rem;
  border-radius: 50%;
  display: none;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.clear-input-btn:hover {
  color: var(--text-primary);
  background: var(--bg-card-alt);
}

/* Primary Button (Signature Red Pill) */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  padding: 1rem 2rem;
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: #FFFFFF;
  background: var(--gradient-primary);
  border: 1px solid transparent;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-normal);
  white-space: nowrap;
  box-shadow: var(--shadow-red-btn);
  outline: none;
}

.btn-primary:hover:not(:disabled) {
  background: var(--gradient-primary-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-red-btn-hover);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0);
}

.btn-primary:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* Search Hint */
.search-hint {
  margin-top: 1rem;
  font-size: 0.84rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* --------------------------------------------------------------------------
   7. STATUS ALERTS & BANNERS
   -------------------------------------------------------------------------- */
.alert-banner {
  max-width: 860px;
  margin: 0 auto 2rem auto;
  padding: 1.15rem 1.4rem;
  background-color: var(--color-danger-bg);
  border: 1px solid var(--color-danger-border);
  border-left: 4px solid var(--color-danger);
  border-radius: var(--radius-md);
  color: var(--color-danger);
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  animation: slideDown 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.alert-banner svg, .alert-banner i {
  width: 22px;
  height: 22px;
  font-size: 1.25rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.alert-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.98rem;
  margin-bottom: 0.2rem;
  color: var(--text-primary);
}

.alert-message {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --------------------------------------------------------------------------
   8. STATISTICS DASHBOARD GRID
   -------------------------------------------------------------------------- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.4rem 1.6rem;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.stat-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-color-hover);
  box-shadow: var(--shadow-md);
}

.stat-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--gradient-primary);
  opacity: 0.85;
}

.stat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.6rem;
}

.stat-label {
  font-family: var(--font-heading);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-xs);
  background: var(--primary-light);
  color: var(--brand-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
}

.stat-value {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

/* --------------------------------------------------------------------------
   9. RESULTS DASHBOARD CARD & TOOLBAR
   -------------------------------------------------------------------------- */
.dashboard-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: all var(--transition-normal);
}

.dashboard-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-card-alt);
  gap: 1.25rem;
  flex-wrap: wrap;
}

/* Filter Box */
.filter-box {
  position: relative;
  flex: 1;
  min-width: 240px;
  max-width: 380px;
  display: flex;
  align-items: center;
}

.filter-icon {
  position: absolute;
  left: 0.9rem;
  width: 16px;
  height: 16px;
  color: var(--text-muted);
  pointer-events: none;
}

.filter-input {
  width: 100%;
  padding: 0.65rem 1rem 0.65rem 2.5rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--text-primary);
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  outline: none;
  transition: all var(--transition-fast);
}

.filter-input:focus {
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 3px rgba(214, 69, 35, 0.15);
}

/* Toolbar Buttons & Action Groups */
.toolbar-actions {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  flex-wrap: wrap;
}

.toolbar-group {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.toolbar-divider {
  width: 1px;
  height: 20px;
  background-color: var(--border-color);
  margin: 0 0.35rem;
}

/* Secondary Button / Filter Pill Style */
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.55rem 0.95rem;
  font-family: var(--font-heading);
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  outline: none;
}

.btn-secondary:hover:not(:disabled) {
  color: var(--brand-primary);
  border-color: var(--brand-primary);
  background: var(--primary-light);
  transform: translateY(-1px);
}

.btn-secondary.active {
  background: var(--gradient-primary);
  color: #FFFFFF;
  border-color: transparent;
  box-shadow: var(--shadow-red-btn);
}

.btn-secondary:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
}

/* --------------------------------------------------------------------------
   10. RESULTS DATA TABLE
   -------------------------------------------------------------------------- */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.results-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.92rem;
}

.results-table th {
  padding: 0.95rem 1.25rem;
  font-family: var(--font-heading);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  background-color: var(--bg-card-alt);
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

.results-table td {
  padding: 0.9rem 1.25rem;
  border-bottom: 1px solid var(--border-color-subtle);
  color: var(--text-primary);
  vertical-align: middle;
  transition: background-color var(--transition-fast);
}

.results-table tbody tr {
  transition: background-color var(--transition-fast);
}

.results-table tbody tr:hover {
  background-color: var(--bg-card-hover);
}

.results-table tbody tr:last-child td {
  border-bottom: none;
}

/* Subdomain Cell Styling */
.subdomain-name {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-primary);
  word-break: break-all;
}

/* Depth Badges */
.badge-depth {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.2rem 0.6rem;
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: var(--radius-full);
  background: var(--bg-card-alt);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  letter-spacing: 0.02em;
}

/* DNS Status Pills */
.dns-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 0.25rem 0.7rem;
  border-radius: var(--radius-full);
  font-family: var(--font-heading);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.dns-status-pill.pending {
  background: var(--bg-card-alt);
  color: var(--text-muted);
  border: 1px solid var(--border-color-subtle);
}

.dns-status-pill.resolves {
  background: var(--color-success-bg);
  color: var(--color-success);
  border: 1px solid var(--color-success-border);
}

.dns-status-pill.unresolved {
  background: var(--color-danger-bg);
  color: var(--color-danger);
  border: 1px solid var(--color-danger-border);
}

/* Copy Small Button */
.btn-copy-sm {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 0.35rem 0.7rem;
  background: var(--bg-card-alt);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  border-radius: var(--radius-xs);
  cursor: pointer;
  font-family: var(--font-heading);
  font-size: 0.78rem;
  font-weight: 600;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-copy-sm:hover {
  background: var(--primary-light);
  border-color: var(--brand-primary);
  color: var(--brand-primary);
  transform: translateY(-1px);
}

.btn-copy-sm.copied {
  background: var(--color-success-bg);
  border-color: var(--color-success);
  color: var(--color-success);
}

/* --------------------------------------------------------------------------
   11. EMPTY & LOADING STATES
   -------------------------------------------------------------------------- */
.state-container {
  padding: 4.5rem 2rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.state-icon-wrap {
  width: 68px;
  height: 68px;
  border-radius: var(--radius-md);
  background: var(--primary-light);
  color: var(--brand-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 1.25rem;
  border: 1px solid var(--border-color);
}

.state-title {
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.state-description {
  color: var(--text-secondary);
  font-size: 0.95rem;
  max-width: 480px;
  line-height: 1.6;
}

/* Loading Spinners */
.spinner {
  animation: rotate 1.2s linear infinite;
  display: inline-block;
  vertical-align: middle;
  width: 18px;
  height: 18px;
}

.spinner circle {
  stroke: currentColor;
  stroke-linecap: round;
  animation: dash 1.5s ease-in-out infinite;
}

@keyframes rotate {
  100% {
    transform: rotate(360deg);
  }
}

@keyframes dash {
  0% {
    stroke-dasharray: 1, 150;
    stroke-dashoffset: 0;
  }
  50% {
    stroke-dasharray: 90, 150;
    stroke-dashoffset: -35;
  }
  100% {
    stroke-dasharray: 90, 150;
    stroke-dashoffset: -124;
  }
}

/* --------------------------------------------------------------------------
   12. PAGINATION CONTROLS
   -------------------------------------------------------------------------- */
.pagination-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 1.5rem;
  border-top: 1px solid var(--border-color);
  background: var(--bg-card-alt);
  flex-wrap: wrap;
  gap: 1rem;
}

.pagination-summary {
  font-size: 0.88rem;
  color: var(--text-muted);
  font-weight: 500;
}

.pagination-nav {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.page-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 0.65rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  border-radius: var(--radius-xs);
  font-family: var(--font-heading);
  font-size: 0.86rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  outline: none;
}

.page-btn:hover:not(:disabled) {
  border-color: var(--brand-primary);
  color: var(--brand-primary);
  background: var(--primary-light);
}

.page-btn.active {
  background: var(--gradient-primary);
  color: #FFFFFF;
  border-color: transparent;
  box-shadow: var(--shadow-red-btn);
}

.page-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

/* --------------------------------------------------------------------------
   13. TOAST NOTIFICATIONS
   -------------------------------------------------------------------------- */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.9rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  min-width: 300px;
  max-width: 440px;
  animation: toastSlideUp 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.toast svg, .toast i {
  flex-shrink: 0;
  font-size: 1.1rem;
}

.toast-success {
  border-left: 4px solid var(--color-success);
}
.toast-success svg, .toast-success i {
  color: var(--color-success);
}

.toast-warning {
  border-left: 4px solid var(--color-warning);
}
.toast-warning svg, .toast-warning i {
  color: var(--color-warning);
}

.toast-info {
  border-left: 4px solid var(--brand-primary);
}
.toast-info svg, .toast-info i {
  color: var(--brand-primary);
}

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

/* --------------------------------------------------------------------------
   14. APPLICATION FOOTER (STANDALONE DEVELOPER UTILITY)
   -------------------------------------------------------------------------- */
.site-footer {
  margin-top: auto;
  background-color: var(--brand-dark);
  color: #FFFFFF;
  border-top: 1px solid var(--brand-dark-border);
  padding: 3.5rem 1.5rem 1.75rem 1.5rem;
  position: relative;
  z-index: 10;
}

.footer-inner {
  max-width: 1180px;
  margin: 0 auto;
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3.5rem;
  margin-bottom: 2.75rem;
}

.footer-brand-col {
  display: flex;
  flex-direction: column;
}

.footer-brand-logo {
  display: inline-block;
  margin-bottom: 1rem;
  text-decoration: none;
}

.footer-logo-wrap {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
}

.footer-brand-name {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 800;
  color: #FFFFFF;
  letter-spacing: -0.02em;
}

.footer-tagline {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.96rem;
  color: var(--brand-secondary);
  margin-bottom: 0.5rem;
}

.footer-bio {
  color: #9EA0B3;
  font-size: 0.9rem;
  line-height: 1.6;
  max-width: 440px;
  margin-bottom: 1.25rem;
}

.footer-col-title {
  font-family: var(--font-heading);
  font-size: 0.98rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 1.25rem;
  letter-spacing: -0.01em;
}

.footer-links-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links-list li span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #9EA0B3;
  font-size: 0.88rem;
  font-weight: 500;
}

.footer-bottom-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1.75rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.84rem;
  color: #77798B;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-meta-badges {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.84rem;
}

.badge-tag {
  color: #9EA0B3;
  font-weight: 500;
}

.legal-sep {
  color: #4A4D68;
}

/* --------------------------------------------------------------------------
   15. RESPONSIVE BREAKPOINTS
   -------------------------------------------------------------------------- */
@media (max-width: 992px) {
  .footer-top-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
  }
  .footer-brand-col {
    grid-column: span 2;
  }
}

@media (max-width: 768px) {
  .app-container {
    padding: 0.75rem 0.75rem 2rem 0.75rem;
  }

  /* Compact Single-Row Mobile Header */
  .site-header {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 0.9rem;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
  }

  .brand-wrapper {
    display: flex;
    align-items: center;
    gap: 0.65rem;
  }

  .brand-divider {
    display: none;
  }

  .tool-category-badge {
    display: none;
  }

  .logo-mark {
    width: 36px;
    height: 36px;
    border-radius: 10px;
  }

  .logo-mark svg {
    width: 18px;
    height: 18px;
  }

  .brand-title {
    font-size: 1.15rem;
  }

  .brand-byline {
    font-size: 0.64rem;
  }

  .theme-toggle-btn {
    padding: 0.4rem 0.65rem;
    font-size: 0.76rem;
    gap: 0.35rem;
  }

  /* Hero Section Mobile */
  .hero-section {
    margin-bottom: 1.5rem;
    padding: 0.25rem 0 0 0;
  }

  .hero-badge {
    font-size: 0.72rem;
    padding: 4px 12px;
    margin-bottom: 0.85rem;
  }

  .hero-title {
    font-size: clamp(1.85rem, 6.5vw, 2.35rem);
    line-height: 1.15;
    margin-bottom: 0.4rem;
  }

  .hero-byline {
    font-size: 0.72rem;
    margin-bottom: 0.75rem;
  }

  .hero-subtitle {
    font-size: 0.92rem;
    line-height: 1.5;
    margin-bottom: 1rem;
    padding: 0 0.5rem;
  }

  .notice-banner {
    padding: 0.65rem 0.85rem;
    font-size: 0.78rem;
    line-height: 1.45;
    gap: 0.5rem;
    text-align: left;
    border-left-width: 3px;
  }

  /* Search Card Mobile */
  .search-card {
    padding: 1.15rem 1rem;
    margin-bottom: 1.75rem;
    border-radius: var(--radius-md);
  }

  .search-form {
    flex-direction: column;
    gap: 0.75rem;
  }

  .input-wrapper {
    width: 100%;
  }

  .search-icon {
    left: 0.9rem;
    width: 18px;
    height: 18px;
  }

  .domain-input {
    padding: 0.85rem 2.6rem 0.85rem 2.6rem;
    font-size: 16px; /* Prevents auto-zoom in iOS Safari */
    border-radius: var(--radius-sm);
  }

  .clear-input-btn {
    right: 0.65rem;
    padding: 0.4rem;
  }

  .btn-primary {
    width: 100%;
    padding: 0.85rem 1.25rem;
    font-size: 0.95rem;
    justify-content: center;
    min-height: 48px;
  }

  .search-hint {
    font-size: 0.75rem;
    line-height: 1.4;
    margin-top: 0.75rem;
  }

  /* Compact 3-Column Stats Grid */
  .stats-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 0.45rem;
    margin-bottom: 1.25rem;
  }

  .stat-card {
    padding: 0.75rem 0.45rem;
    border-radius: var(--radius-sm);
    text-align: center;
    align-items: center;
  }

  .stat-header {
    margin-bottom: 0.25rem;
    justify-content: center;
  }

  .stat-icon {
    display: none;
  }

  .stat-label {
    font-size: 0.64rem;
    letter-spacing: 0.02em;
  }

  .stat-value {
    font-size: 1.25rem;
  }

  /* Dashboard Toolbar Mobile */
  .dashboard-card {
    border-radius: var(--radius-md);
  }

  .dashboard-toolbar {
    flex-direction: column;
    align-items: stretch;
    padding: 0.85rem;
    gap: 0.75rem;
  }

  .filter-box {
    max-width: 100%;
    min-width: 100%;
  }

  .filter-input {
    font-size: 16px; /* Prevents iOS auto-zoom */
    padding: 0.65rem 1rem 0.65rem 2.3rem;
  }

  .toolbar-actions {
    display: flex;
    flex-direction: column;
    gap: 0.55rem;
    width: 100%;
  }

  /* Segmented Sort Bar */
  .toolbar-group:first-child {
    display: flex;
    width: 100%;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    padding: 3px;
    gap: 2px;
  }

  .toolbar-group:first-child .btn-secondary {
    flex: 1;
    text-align: center;
    border: none;
    border-radius: var(--radius-full);
    padding: 0.45rem 0.2rem;
    font-size: 0.78rem;
    justify-content: center;
  }

  .toolbar-divider {
    display: none;
  }

  /* Action Buttons Grid */
  .toolbar-group:last-child {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    width: 100%;
  }

  .toolbar-group:last-child .btn-secondary {
    flex: 1 1 calc(33.333% - 0.4rem);
    min-width: 70px;
    padding: 0.5rem 0.35rem;
    font-size: 0.76rem;
    justify-content: center;
    min-height: 38px;
  }

  #verify-dns-btn {
    flex: 1 1 calc(50% - 0.4rem);
  }

  #copy-all-btn {
    flex: 1 1 calc(50% - 0.4rem);
  }

  /* Results Table Scrollable Container */
  .table-responsive {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border-bottom: 1px solid var(--border-color);
  }

  .results-table {
    min-width: 520px;
  }

  .results-table th {
    padding: 0.75rem 0.65rem;
    font-size: 0.72rem;
  }

  .results-table td {
    padding: 0.75rem 0.65rem;
    font-size: 0.84rem;
  }

  .subdomain-name {
    font-size: 0.82rem;
  }

  .badge-depth {
    font-size: 0.7rem;
    padding: 0.15rem 0.45rem;
  }

  .dns-status-pill {
    font-size: 0.72rem;
    padding: 0.2rem 0.55rem;
  }

  .btn-copy-sm {
    padding: 0.3rem 0.55rem;
    font-size: 0.74rem;
  }

  /* Pagination Mobile */
  .pagination-container {
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    padding: 0.9rem 0.75rem;
    text-align: center;
  }

  .pagination-summary {
    font-size: 0.78rem;
    order: 2;
  }

  .pagination-nav {
    order: 1;
    gap: 0.25rem;
    flex-wrap: wrap;
    justify-content: center;
  }

  .page-btn {
    min-width: 34px;
    height: 34px;
    font-size: 0.8rem;
    padding: 0 0.4rem;
  }

  /* Footer Mobile */
  .site-footer {
    padding: 2.25rem 1rem 1.5rem 1rem;
  }

  .footer-top-grid {
    grid-template-columns: 1fr;
    gap: 1.75rem;
    margin-bottom: 1.75rem;
  }

  .footer-brand-col {
    align-items: flex-start;
  }

  .footer-bio {
    font-size: 0.84rem;
    line-height: 1.5;
    max-width: 100%;
  }

  .footer-col-title {
    font-size: 0.9rem;
    margin-bottom: 0.85rem;
  }

  .footer-links-list {
    gap: 0.6rem;
  }

  .footer-links-list li span {
    font-size: 0.82rem;
  }

  .footer-bottom-bar {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 0.75rem;
    font-size: 0.8rem;
    padding-top: 1.25rem;
  }

  .footer-meta-badges {
    justify-content: center;
    flex-wrap: wrap;
    gap: 6px;
    font-size: 0.78rem;
  }

  /* Toast Mobile */
  .toast-container {
    left: 0.75rem;
    right: 0.75rem;
    bottom: 0.75rem;
  }

  .toast {
    min-width: auto;
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 0.84rem;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.75rem;
  }

  .stat-value {
    font-size: 1.15rem;
  }

  .stat-label {
    font-size: 0.6rem;
  }

  .btn-primary {
    font-size: 0.9rem;
  }
}

/* --------------------------------------------------------------------------
   16. ACCESSIBILITY & REDUCED MOTION
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}