/* ==========================================================================
   IMEI.IO Design System (v2)
   - Clean, Modern & Professional Web/App Interface
   - Responsive: Mobile-first Native Feel on Phones/Tablets & Airy Web on Desktop
   - FontAwesome Icons Integration
   - Palette: Clean White/Off-white (#F8F9FA / #FFFFFF) & Professional Blue (#1A73E8)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;500;700;900&family=Inter:wght@400;500;600;700;800&family=JetBrains+Mono:wght@500;700&display=swap');

:root {
  /* Color Palette */
  --sys-background: #F8F9FA;
  --sys-surface: #FFFFFF;
  --sys-surface-variant: #F1F3F4;
  --sys-surface-container: #ECEFF1;
  --sys-surface-glass: rgba(255, 255, 255, 0.94);
  
  /* Primary Accent: Professional Blue */
  --sys-primary: #1A73E8;
  --sys-primary-hover: #1557BF;
  --sys-primary-dark: #0D47A1;
  --sys-primary-container: #E8F0FE;
  --sys-on-primary-container: #174EA6;
  --sys-primary-glow: rgba(26, 115, 232, 0.22);
  
  /* Status Colors */
  --sys-success: #137333;
  --sys-success-container: #E6F4EA;
  --sys-success-border: #CEEAD6;
  
  --sys-error: #D93025;
  --sys-error-container: #FCE8E6;
  --sys-error-border: #FAD2CF;
  
  --sys-warning: #E37400;
  --sys-warning-container: #FEF7E0;
  
  /* Neutral Typography */
  --sys-on-background: #202124;
  --sys-on-surface: #202124;
  --sys-on-surface-variant: #5F6368;
  --sys-outline: #DADCE0;
  --sys-outline-variant: #E8EAED;
  --sys-text-muted: #80868B;
  
  /* Border Radii */
  --shape-xs: 4px;
  --shape-sm: 8px;
  --shape-md: 12px;
  --shape-lg: 16px;
  --shape-xl: 24px;
  --shape-full: 9999px;
  
  /* Soft Shadows */
  --elevation-1: 0 1px 2px 0 rgba(60,64,67,0.3), 0 1px 3px 1px rgba(60,64,67,0.15);
  --elevation-2: 0 1px 2px 0 rgba(60,64,67,0.3), 0 2px 6px 2px rgba(60,64,67,0.15);
  --elevation-3: 0 1px 3px 0 rgba(60,64,67,0.3), 0 4px 8px 3px rgba(60,64,67,0.15);
  --elevation-4: 0 2px 3px 0 rgba(60,64,67,0.3), 0 6px 10px 4px rgba(60,64,67,0.15);
  --elevation-glow: 0 4px 16px rgba(26, 115, 232, 0.28);
  
  /* Spacing Grid (8px) */
  --spacing-1: 8px;
  --spacing-2: 16px;
  --spacing-3: 24px;
  --spacing-4: 32px;
  --spacing-5: 40px;
  --spacing-6: 48px;
  
  --header-height: 64px;
  --tabbar-height: 68px;
  
  --safe-area-top: env(safe-area-inset-top, 0px);
  --safe-area-bottom: env(safe-area-inset-bottom, 0px);
  
  --font-family: 'Roboto', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

/* Reset & Global Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html {
  font-size: 16px;
  background-color: var(--sys-background);
  color: var(--sys-on-background);
  font-family: var(--font-family);
  -webkit-text-size-adjust: 100%;
  overflow-anchor: none;
}

body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  background-color: var(--sys-background);
  color: var(--sys-on-background);
  line-height: 1.5;
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow-x: hidden;
}

/* App Frame Shell */
.app-frame {
  width: 100%;
  max-width: 560px;
  min-height: 100vh;
  background-color: var(--sys-background);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: max-width 0.25s ease;
}

/* ==========================================================================
   TOP APP BAR / NAVBAR
   ========================================================================== */

.app-header {
  position: sticky;
  top: 0;
  z-index: 60;
  height: calc(var(--header-height) + var(--safe-area-top));
  padding-top: var(--safe-area-top);
  background: var(--sys-surface-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--sys-outline-variant);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-left: var(--spacing-2);
  padding-right: var(--spacing-2);
  width: 100%;
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  gap: 24px;
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}

.brand-logo-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--shape-md);
  background: var(--sys-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: var(--elevation-glow);
  font-weight: 900;
  font-size: 17px;
  letter-spacing: -0.5px;
}

.brand-text {
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--sys-on-surface);
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand-badge {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  background: var(--sys-primary-container);
  color: var(--sys-on-primary-container);
  padding: 3px 8px;
  border-radius: var(--shape-full);
  letter-spacing: 0.5px;
}

/* Desktop Navigation Menu (>= 1024px) */
.desktop-nav {
  display: none;
  align-items: center;
  gap: 22px;
  flex-wrap: nowrap;
}

.desktop-nav-link {
  text-decoration: none;
  color: var(--sys-on-surface-variant);
  font-size: 0.88rem;
  font-weight: 600;
  transition: color 0.15s ease;
  position: relative;
  padding: 8px 2px;
  white-space: nowrap;
}

.desktop-nav-link:hover {
  color: var(--sys-primary);
}

.desktop-nav-link.active {
  color: var(--sys-primary);
  font-weight: 700;
}

.desktop-nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--sys-primary);
  border-radius: var(--shape-full);
}

.desktop-cta-btn {
  display: none;
  background: var(--sys-primary);
  color: #ffffff;
  text-decoration: none;
  padding: 8px 18px;
  border-radius: var(--shape-full);
  font-size: 0.86rem;
  font-weight: 700;
  box-shadow: var(--elevation-1);
  transition: all 0.18s ease;
  align-items: center;
  gap: 7px;
  white-space: nowrap;
  flex-shrink: 0;
}

.desktop-cta-btn:hover {
  background: var(--sys-primary-hover);
  box-shadow: var(--elevation-2);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

/* Google AdSense Container */
.ad-slot-card {
  display: block;
  width: 100%;
  max-width: 100%;
  margin: 20px auto;
  text-align: center;
  overflow: hidden;
  border-radius: var(--shape-md);
  background: var(--sys-surface);
  border: 1px solid var(--sys-outline-variant);
  padding: 12px;
  min-height: 280px;
  box-sizing: border-box;
  overflow-anchor: none;
}

.ad-slot-card ins.adsbygoogle {
  display: block !important;
  width: 100% !important;
  min-width: 250px;
  min-height: 280px;
  margin: 0 auto;
}

/* Compact Top Leaderboard (Above Form) */
.ad-slot-card.ad-slot-top {
  margin: 10px auto 16px;
  min-height: 90px;
  max-height: 115px;
  padding: 8px 12px;
}

.ad-slot-card.ad-slot-top ins.adsbygoogle {
  min-height: 90px;
  max-height: 100px;
}


/* Prevent Google Auto-Ads from injecting inside Header, Nav, Tab-bar or Cards */
.app-header .google-auto-placed,
.app-header ins.adsbygoogle,
.header-container .google-auto-placed,
.header-container ins.adsbygoogle,
.desktop-nav .google-auto-placed,
.desktop-nav ins.adsbygoogle,
.tab-bar .google-auto-placed,
.tab-bar ins.adsbygoogle,
.segmented-control .google-auto-placed,
.segmented-control ins.adsbygoogle,
.bottom-sheet .google-auto-placed,
.bottom-sheet ins.adsbygoogle {
  display: none !important;
  visibility: hidden !important;
  height: 0 !important;
  width: 0 !important;
  margin: 0 !important;
  padding: 0 !important;
}

/* ==========================================================================
   SERVICES CATALOG GRID & FILTERS
   ========================================================================== */

.service-catalog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
  width: 100%;
}

.service-catalog-card {
  background: var(--sys-surface);
  border: 1px solid var(--sys-outline-variant);
  border-radius: var(--shape-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--elevation-1);
  transition: all 0.2s cubic-bezier(0.2, 0, 0, 1);
  text-decoration: none;
  color: inherit;
}

.service-catalog-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--elevation-3);
  border-color: var(--sys-primary);
}

.filter-btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
  justify-content: center;
}

.filter-pill {
  background: var(--sys-surface-variant);
  border: 1px solid var(--sys-outline-variant);
  border-radius: var(--shape-full);
  padding: 7px 18px;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--sys-on-surface-variant);
  cursor: pointer;
  transition: all 0.15s ease;
}

.filter-pill:hover,
.filter-pill.active {
  background: var(--sys-primary);
  color: #ffffff;
  border-color: var(--sys-primary);
}



.icon-btn {
  background: var(--sys-surface);
  border: 1px solid var(--sys-outline-variant);
  width: 40px;
  height: 40px;
  border-radius: var(--shape-full);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--sys-on-surface-variant);
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
  font-size: 15px;
}

.icon-btn:hover {
  background: var(--sys-surface-variant);
  color: var(--sys-primary);
}

.icon-btn:active {
  transform: scale(0.92);
}

/* ==========================================================================
   APP MAIN CONTENT
   ========================================================================== */

.app-content {
  flex: 1;
  padding: var(--spacing-2);
  padding-bottom: calc(var(--tabbar-height) + var(--safe-area-bottom) + 24px);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3);
  width: 100%;
}

/* Trust Banner */
.trust-banner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--sys-primary);
  background: var(--sys-primary-container);
  padding: 6px 16px;
  border-radius: var(--shape-full);
  width: fit-content;
  margin: 0 auto;
}

/* Hero Section */
.hero-section {
  text-align: center;
  padding: 8px 4px 4px;
}

.hero-title {
  font-size: 1.85rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  line-height: 1.25;
  color: var(--sys-on-surface);
  margin-bottom: 8px;
}

.hero-subtitle {
  font-size: 0.96rem;
  color: var(--sys-on-surface-variant);
  max-width: 440px;
  margin: 0 auto;
  line-height: 1.45;
}

/* ==========================================================================
   SCALABLE SERVICES SELECTOR & CHIP SCROLLER
   ========================================================================== */

.services-chip-wrapper {
  width: 100%;
  max-width: 860px;
  margin: 0 auto;
  position: relative;
}

.services-chip-scroller {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  padding: 4px 4px 8px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none; /* Firefox */
  -ms-overflow-style: none; /* IE/Edge */
}

.services-chip-scroller::-webkit-scrollbar {
  display: none; /* Chrome/Safari */
}

.service-chip {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--sys-surface);
  border: 1px solid var(--sys-outline-variant);
  border-radius: var(--shape-full);
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--sys-on-surface-variant);
  text-decoration: none;
  box-shadow: var(--elevation-1);
  transition: all 0.2s cubic-bezier(0.2, 0, 0, 1);
  white-space: nowrap;
  cursor: pointer;
}

.service-chip:hover {
  background: var(--sys-surface-variant);
  color: var(--sys-primary);
  border-color: var(--sys-primary);
}

.service-chip.active {
  background: var(--sys-primary);
  color: #ffffff;
  border-color: var(--sys-primary);
  box-shadow: var(--elevation-glow);
  font-weight: 700;
}

.service-chip.active i {
  color: #ffffff;
}

.service-chip.more-btn {
  background: var(--sys-primary-container);
  color: var(--sys-on-primary-container);
  border-color: var(--sys-primary-container);
  font-weight: 700;
}

.service-chip.more-btn:hover {
  background: var(--sys-primary);
  color: #ffffff;
}

.service-chip:active {
  transform: scale(0.96);
}

/* Active Service Banner (Inside Form Card) */
.active-service-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--sys-surface-variant);
  border: 1px solid var(--sys-outline-variant);
  border-radius: var(--shape-md);
  padding: 12px 16px;
  margin-bottom: 18px;
}

.active-service-info {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.active-service-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--shape-md);
  background: var(--sys-primary-container);
  color: var(--sys-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
  flex-shrink: 0;
}

.active-service-tag {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--sys-primary);
  display: block;
}

.active-service-title {
  font-size: 0.96rem;
  font-weight: 800;
  color: var(--sys-on-surface);
  line-height: 1.25;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.change-service-btn {
  background: var(--sys-surface);
  border: 1px solid var(--sys-outline);
  color: var(--sys-primary);
  font-weight: 700;
  font-size: 0.82rem;
  padding: 6px 14px;
  border-radius: var(--shape-full);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  flex-shrink: 0;
  transition: all 0.15s ease;
}

.change-service-btn:hover {
  background: var(--sys-primary);
  color: #ffffff;
  border-color: var(--sys-primary);
}

/* Service Picker Modal Grid */
.picker-service-grid {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 12px;
  max-height: 55vh;
  overflow-y: auto;
  padding-right: 4px;
}

.picker-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  background: var(--sys-surface-variant);
  border: 1px solid transparent;
  border-radius: var(--shape-md);
  text-decoration: none;
  color: var(--sys-on-surface);
  transition: all 0.15s ease;
  gap: 12px;
}

.picker-item:hover {
  background: var(--sys-primary-container);
  border-color: var(--sys-primary);
}

.picker-item.selected {
  background: var(--sys-primary-container);
  border-color: var(--sys-primary);
}

.picker-item-left {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.picker-item-icon {
  width: 34px;
  height: 34px;
  border-radius: var(--shape-sm);
  background: var(--sys-surface);
  color: var(--sys-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  flex-shrink: 0;
}

.picker-item-title {
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--sys-on-surface);
  display: block;
}

.picker-item-desc {
  font-size: 0.78rem;
  color: var(--sys-text-muted);
  display: block;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}


/* Layout Grid */
.main-interactive-layout {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3);
  width: 100%;
}

.interactive-left-col {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3);
  width: 100%;
}

/* Card Surface */
.card {
  background: var(--sys-surface);
  border: 1px solid var(--sys-outline-variant);
  border-radius: var(--shape-lg);
  padding: var(--spacing-3);
  box-shadow: var(--elevation-1);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
  width: 100%;
}

.card:hover {
  box-shadow: var(--elevation-2);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-2);
}

.card-title {
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--sys-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Outlined Text Field for IMEI Input */
.imei-input-box {
  position: relative;
  display: flex;
  align-items: center;
  border: 2px solid var(--sys-outline);
  border-radius: var(--shape-md);
  background: var(--sys-surface);
  transition: all 0.2s cubic-bezier(0.2, 0, 0, 1);
}

.imei-input-box:focus-within {
  border-color: var(--sys-primary);
  box-shadow: 0 0 0 3px var(--sys-primary-glow);
}

.imei-input-box.is-valid {
  border-color: var(--sys-success);
}

.imei-input-box.is-invalid {
  border-color: var(--sys-error);
}

.imei-input {
  width: 100%;
  height: 56px;
  border: none;
  background: transparent;
  padding: 0 85px 0 16px;
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--sys-on-surface);
  font-family: var(--font-mono);
}

.imei-input:focus {
  outline: none;
}

.imei-input::placeholder {
  font-weight: 400;
  letter-spacing: 0;
  color: var(--sys-text-muted);
  font-size: 1rem;
  font-family: var(--font-family);
}

.input-actions {
  position: absolute;
  right: 10px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.quick-action-btn {
  background: var(--sys-surface-variant);
  border: none;
  color: var(--sys-on-surface-variant);
  padding: 6px 10px;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: var(--shape-xs);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 5px;
  transition: background 0.15s ease;
}

.quick-action-btn:hover {
  background: var(--sys-primary-container);
  color: var(--sys-primary);
}

.quick-action-btn:active {
  transform: scale(0.94);
}

.clear-btn {
  width: 24px;
  height: 24px;
  border-radius: var(--shape-full);
  background: var(--sys-text-muted);
  color: #fff;
  border: none;
  display: none;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 11px;
}

/* Input Helper Line */
.input-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 8px;
  font-size: 0.84rem;
}

.digit-counter {
  font-weight: 600;
  color: var(--sys-text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-mono);
}

.luhn-status {
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 4px;
}

.luhn-status.valid {
  color: var(--sys-success);
}

.luhn-status.invalid {
  color: var(--sys-error);
}

.dial-helper-btn {
  background: none;
  border: none;
  color: var(--sys-primary);
  font-weight: 700;
  font-size: 0.84rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 4px;
}

.dial-helper-btn:hover {
  text-decoration: underline;
}

/* Captcha Box */
.captcha-container {
  margin: 14px 0 8px;
  min-height: 65px;
  display: flex;
  justify-content: center;
  align-items: center;
}

/* Filled Primary Button */
.app-btn {
  width: 100%;
  height: 52px;
  border-radius: var(--shape-md);
  border: none;
  background: var(--sys-primary);
  color: #ffffff;
  font-size: 1.05rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  box-shadow: var(--elevation-1);
  transition: all 0.18s cubic-bezier(0.2, 0, 0, 1);
  margin-top: 8px;
  text-decoration: none;
}

.app-btn:hover {
  background: var(--sys-primary-hover);
  box-shadow: var(--elevation-2);
  transform: translateY(-1px);
}

.app-btn:active {
  transform: scale(0.98);
  box-shadow: var(--elevation-1);
}

.app-btn:disabled {
  background: var(--sys-surface-variant);
  color: var(--sys-text-muted);
  box-shadow: none;
  cursor: not-allowed;
  transform: none;
}

.app-btn-secondary {
  background: var(--sys-surface);
  color: var(--sys-on-surface);
  border: 1px solid var(--sys-outline);
  box-shadow: none;
}

.app-btn-secondary:hover {
  background: var(--sys-surface-variant);
}

/* Loading Stepper */
.loading-card {
  display: none;
  text-align: center;
  padding: 36px 20px;
}

.spinner-ring {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 4px solid var(--sys-primary-container);
  border-top-color: var(--sys-primary);
  animation: spin 0.8s linear infinite;
  margin: 0 auto 18px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loading-steps {
  display: flex;
  flex-direction: column;
  gap: 10px;
  text-align: left;
  max-width: 340px;
  margin: 20px auto 0;
}

.step-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.9rem;
  color: var(--sys-text-muted);
  transition: all 0.3s ease;
}

.step-item.active {
  color: var(--sys-on-surface);
  font-weight: 700;
}

.step-item.completed {
  color: var(--sys-success);
}

.step-icon {
  width: 24px;
  height: 24px;
  border-radius: var(--shape-full);
  background: var(--sys-surface-variant);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
}

.step-item.completed .step-icon {
  background: var(--sys-success-container);
  color: var(--sys-success);
}

.step-item.active .step-icon {
  background: var(--sys-primary-container);
  color: var(--sys-primary);
}

/* ==========================================================================
   RESULTS PRESENTATION
   ========================================================================== */

.result-card {
  display: none;
  animation: fadeIn 0.35s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Status Hero Card */
.status-hero-card {
  border-radius: var(--shape-md);
  padding: 16px 20px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.status-hero-card.clean {
  background: var(--sys-success-container);
  border: 1px solid var(--sys-success-border);
  color: var(--sys-success);
}

.status-hero-card.blacklisted {
  background: var(--sys-error-container);
  border: 1px solid var(--sys-error-border);
  color: var(--sys-error);
}

.status-hero-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--shape-full);
  background: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
  box-shadow: var(--elevation-1);
}

.status-hero-text h3 {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 2px;
}

.status-hero-text p {
  font-size: 0.88rem;
  opacity: 0.9;
}

/* Device Hero Section */
.device-hero {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--sys-outline-variant);
}

.device-avatar {
  width: 64px;
  height: 64px;
  border-radius: var(--shape-md);
  background: var(--sys-primary-container);
  color: var(--sys-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  flex-shrink: 0;
}

.device-info-main {
  flex: 1;
  min-width: 0;
}

.device-brand-tag {
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--sys-primary);
  letter-spacing: 0.5px;
}

.device-model-name {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--sys-on-surface);
  line-height: 1.25;
  margin: 2px 0 4px;
  word-break: break-word;
}

.device-tac-code {
  font-size: 0.84rem;
  color: var(--sys-text-muted);
  font-family: var(--font-mono);
}

/* Spec List Grid */
.spec-list {
  background: var(--sys-surface-variant);
  border-radius: var(--shape-md);
  overflow: hidden;
}

.spec-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 13px 16px;
  font-size: 0.92rem;
  border-bottom: 1px solid var(--sys-outline-variant);
}

.spec-row:last-child {
  border-bottom: none;
}

.spec-label {
  color: var(--sys-on-surface-variant);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 10px;
}

.spec-label i {
  color: var(--sys-primary);
  width: 16px;
  text-align: center;
}

.spec-value {
  color: var(--sys-on-surface);
  font-weight: 700;
  text-align: right;
  display: flex;
  align-items: center;
  gap: 8px;
}

.copy-mini-btn {
  background: none;
  border: none;
  color: var(--sys-text-muted);
  cursor: pointer;
  padding: 2px;
  display: inline-flex;
  transition: color 0.15s;
}

.copy-mini-btn:hover {
  color: var(--sys-primary);
}

.result-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 20px;
}

/* ==========================================================================
   RECENT HISTORY
   ========================================================================== */

.history-card-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 12px;
  margin-bottom: 16px;
}

.history-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--sys-surface-variant);
  border-radius: var(--shape-md);
  text-decoration: none;
  color: var(--sys-on-surface);
  transition: background 0.15s ease;
  cursor: pointer;
}

.history-item:hover {
  background: var(--sys-primary-container);
}

.history-item-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.history-model {
  font-weight: 700;
  font-size: 0.92rem;
}

.history-imei {
  font-size: 0.8rem;
  color: var(--sys-text-muted);
  font-family: var(--font-mono);
}

.history-status-badge {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: var(--shape-full);
  text-transform: uppercase;
}

.history-status-badge.clean {
  background: var(--sys-success-container);
  color: var(--sys-success);
}

.history-status-badge.blacklisted {
  background: var(--sys-error-container);
  color: var(--sys-error);
}

/* Feature Cards Grid */
.feature-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2);
  width: 100%;
}

.feature-item {
  background: var(--sys-surface);
  border: 1px solid var(--sys-outline-variant);
  border-radius: var(--shape-md);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  box-shadow: var(--elevation-1);
  transition: transform 0.15s ease;
}

.feature-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--elevation-2);
}

.feature-icon-box {
  width: 40px;
  height: 40px;
  border-radius: var(--shape-md);
  background: var(--sys-primary-container);
  color: var(--sys-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.feature-item h3 {
  font-size: 0.96rem;
  font-weight: 700;
  color: var(--sys-on-surface);
}

.feature-item p {
  font-size: 0.84rem;
  color: var(--sys-on-surface-variant);
  line-height: 1.45;
}

/* Accordion FAQ */
.accordion-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 100%;
}

.accordion-item {
  background: var(--sys-surface);
  border: 1px solid var(--sys-outline-variant);
  border-radius: var(--shape-md);
  overflow: hidden;
  box-shadow: var(--elevation-1);
}

.accordion-header {
  padding: 16px 20px;
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--sys-on-surface);
  cursor: pointer;
  gap: 12px;
  font-family: var(--font-family);
}

.accordion-arrow {
  color: var(--sys-primary);
  transition: transform 0.2s ease;
  font-size: 12px;
}

.accordion-item.open .accordion-arrow {
  transform: rotate(180deg);
}

.accordion-body {
  display: none;
  padding: 0 20px 18px;
  font-size: 0.92rem;
  color: var(--sys-on-surface-variant);
  line-height: 1.6;
  border-top: 1px solid var(--sys-outline-variant);
  padding-top: 14px;
}

.accordion-item.open .accordion-body {
  display: block;
}

/* ==========================================================================
   FIXED BOTTOM NAVIGATION BAR (Mobile Only)
   ========================================================================== */

.tab-bar {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 560px;
  height: calc(var(--tabbar-height) + var(--safe-area-bottom));
  padding-bottom: var(--safe-area-bottom);
  background: var(--sys-surface-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid var(--sys-outline-variant);
  display: flex;
  align-items: center;
  justify-content: space-around;
  z-index: 60;
}

.tab-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  text-decoration: none;
  color: var(--sys-on-surface-variant);
  font-size: 0.74rem;
  font-weight: 600;
  flex: 1;
  height: 100%;
  transition: all 0.15s ease;
  position: relative;
}

.tab-pill {
  padding: 4px 16px;
  border-radius: var(--shape-full);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s cubic-bezier(0.2, 0, 0, 1);
}

.tab-item.active .tab-pill {
  background: var(--sys-primary-container);
  color: var(--sys-on-primary-container);
}

.tab-item.active {
  color: var(--sys-on-primary-container);
  font-weight: 700;
}

.tab-icon {
  font-size: 18px;
  line-height: 1;
}

.tab-item:active {
  transform: scale(0.92);
}

/* ==========================================================================
   BOTTOM SHEET / MODAL DIALOG
   ========================================================================== */

.sheet-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  background: rgba(32, 33, 36, 0.65);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.sheet-backdrop.show {
  opacity: 1;
  pointer-events: auto;
}

.bottom-sheet {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translate(-50%, 100%);
  width: 100%;
  max-width: 560px;
  max-height: 88vh;
  max-height: 88dvh;
  background: var(--sys-surface);
  border-radius: var(--shape-xl) var(--shape-xl) 0 0;
  z-index: 1000;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
  box-shadow: var(--elevation-4);
  transition: transform 0.3s cubic-bezier(0.2, 0, 0, 1);
  padding: 0 20px calc(var(--safe-area-bottom) + 84px);
  box-sizing: border-box;
}

.sheet-backdrop.show .bottom-sheet {
  transform: translate(-50%, 0);
}

.sheet-handle {
  width: 40px;
  height: 5px;
  border-radius: var(--shape-full);
  background: var(--sys-outline);
  margin: 12px auto 16px;
}

.sheet-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  position: sticky;
  top: 0;
  background: var(--sys-surface);
  padding: 8px 0;
  z-index: 2;
}

.sheet-title {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--sys-on-surface);
}


/* Toast HUD Notification */
.toast-hud {
  position: fixed;
  top: 80px;
  left: 50%;
  transform: translateX(-50%) translateY(-20px);
  background: var(--sys-on-surface);
  color: #fff;
  padding: 10px 22px;
  border-radius: var(--shape-full);
  font-size: 0.88rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: var(--elevation-3);
  opacity: 0;
  pointer-events: none;
  z-index: 200;
  transition: all 0.25s cubic-bezier(0.2, 0, 0, 1);
}

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

/* Dialer Mockup */
.dialer-mockup {
  background: var(--sys-surface-variant);
  border: 1px solid var(--sys-outline-variant);
  border-radius: var(--shape-md);
  padding: 22px;
  text-align: center;
  margin: 16px 0;
}

.dialer-code {
  font-size: 2.4rem;
  font-weight: 800;
  letter-spacing: 4px;
  color: var(--sys-primary);
  font-family: var(--font-mono);
}

/* Prose Typography */
.prose-content {
  font-size: 0.94rem;
  color: var(--sys-on-surface-variant);
  line-height: 1.65;
}

.prose-content h2, .prose-content h3 {
  color: var(--sys-on-surface);
  margin-top: 18px;
  margin-bottom: 8px;
  font-weight: 700;
}

.prose-content ul {
  padding-left: 22px;
  margin: 12px 0;
}

.prose-content li {
  margin-bottom: 6px;
}

/* Desktop Footer */
.desktop-footer {
  width: 100%;
  background: var(--sys-surface);
  border-top: 1px solid var(--sys-outline-variant);
  padding: 48px 24px 36px;
  margin-top: 48px;
  display: none;
}

.desktop-footer-inner {
  max-width: 1140px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
}

.footer-col h4 {
  font-size: 0.96rem;
  font-weight: 700;
  color: var(--sys-on-surface);
  margin-bottom: 16px;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a {
  color: var(--sys-on-surface-variant);
  text-decoration: none;
  font-size: 0.88rem;
  transition: color 0.15s;
}

.footer-col a:hover {
  color: var(--sys-primary);
}

.mobile-footer {
  text-align: center;
  font-size: 0.8rem;
  color: var(--sys-text-muted);
  padding: 10px 0 20px;
}

/* ==========================================================================
   DESKTOP & LARGE SCREEN RESPONSIVENESS (>= 1024px)
   ========================================================================== */

@media (min-width: 1024px) {
  body {
    background-color: var(--sys-background);
  }

  .app-frame {
    max-width: 100%;
    width: 100%;
    box-shadow: none;
    background: transparent;
  }

  .app-header {
    width: 100%;
    background: #ffffff;
    border-bottom: 1px solid var(--sys-outline-variant);
    padding: 0 32px;
  }

  .header-container {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
  }
  
  .desktop-nav {
    display: flex;
  }
  
  .desktop-cta-btn {
    display: inline-flex;
  }
  
  .tab-bar {
    display: none;
  }
  
  .app-content {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    padding: 40px 24px 70px;
    gap: 40px;
  }
  
  .hero-section {
    padding: 20px 0 10px;
  }
  
  .hero-title {
    font-size: 2.9rem;
    letter-spacing: -0.8px;
    margin-bottom: 12px;
    line-height: 1.2;
  }
  
  .hero-subtitle {
    font-size: 1.15rem;
    max-width: 720px;
    line-height: 1.55;
  }
  
  .main-interactive-layout {
    display: grid;
    grid-template-columns: 1.25fr 0.75fr;
    gap: 32px;
    align-items: start;
  }
  
  .card {
    padding: 32px;
    border-radius: var(--shape-lg);
  }
  
  .feature-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
  }
  
  .feature-item {
    padding: 24px 20px;
  }
  
  .spec-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }
  
  .spec-row {
    border-right: 1px solid var(--sys-outline-variant);
  }
  
  .spec-row:nth-child(2n) {
    border-right: none;
  }
  
  /* Desktop Centered Modal */
  .bottom-sheet {
    border-radius: var(--shape-xl);
    bottom: auto;
    top: 50%;
    transform: translate(-50%, -40%);
    opacity: 0;
    max-width: 600px;
    padding: 36px;
    box-shadow: var(--elevation-4);
    transition: all 0.25s cubic-bezier(0.2, 0, 0, 1);
  }
  
  .sheet-backdrop.show .bottom-sheet {
    transform: translate(-50%, -50%);
    opacity: 1;
  }
  
  .sheet-handle {
    display: none;
  }
  
  /* Full Width White Desktop Footer */
  .desktop-footer {
    display: block;
    width: 100%;
    background: #ffffff;
    border-top: 1px solid var(--sys-outline-variant);
    padding: 56px 32px 40px;
    margin-top: 60px;
  }

  .desktop-footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
  }
  
  .mobile-footer {
    display: none;
  }
}

/* Tablet */
@media (min-width: 768px) and (max-width: 1023px) {
  .app-frame {
    max-width: 720px;
  }

  .app-header {
    background: #ffffff;
  }
  
  .hero-title {
    font-size: 2.4rem;
  }
  
  .card {
    padding: 26px;
  }
  
  .feature-grid {
    grid-template-columns: 1fr 1fr;
  }
}


/* Responsive Comparison Table for SEO & GEO */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  margin: 20px 0;
  border-radius: var(--shape-md);
  border: 1px solid var(--sys-outline-variant);
  background: var(--sys-surface);
  -webkit-overflow-scrolling: touch;
}
.seo-table {
  width: 100%;
  min-width: 540px;
  border-collapse: collapse;
  font-size: 0.88rem;
  text-align: left;
}
.seo-table th {
  background: var(--sys-surface-variant);
  color: var(--sys-on-surface);
  font-weight: 700;
  padding: 12px 14px;
  border-bottom: 2px solid var(--sys-outline);
}
.seo-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--sys-outline-variant);
  color: var(--sys-on-surface-variant);
  line-height: 1.5;
}
.seo-table tr:last-child td {
  border-bottom: none;
}
.seo-badge-clean {
  display: inline-block;
  padding: 2px 8px;
  border-radius: var(--shape-xs);
  background: var(--sys-success-container);
  color: var(--sys-success);
  font-weight: 700;
  font-size: 0.8rem;
}
.seo-badge-bad {
  display: inline-block;
  padding: 2px 8px;
  border-radius: var(--shape-xs);
  background: var(--sys-error-container);
  color: var(--sys-error);
  font-weight: 700;
  font-size: 0.8rem;
}
.seo-badge-warn {
  display: inline-block;
  padding: 2px 8px;
  border-radius: var(--shape-xs);
  background: var(--sys-warning-container);
  color: var(--sys-warning);
  font-weight: 700;
  font-size: 0.8rem;
}

/* Callout Box for AI Answer Engine Optimization */
.geo-callout {
  padding: 16px 20px;
  margin: 18px 0;
  border-left: 4px solid var(--sys-primary);
  background: var(--sys-primary-container);
  border-radius: 0 var(--shape-md) var(--shape-md) 0;
  color: var(--sys-on-primary-container);
  font-size: 0.94rem;
  line-height: 1.6;
}
.geo-callout strong {
  color: var(--sys-primary-dark);
}

/* ==========================================================================
   COMPACT TOP BANNER (Exact Sizing: 320x50 Mobile / 728x90 Desktop)
   ========================================================================== */

.top-banner-wrapper {
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 8px auto 12px;
  overflow: hidden;
  text-align: center;
  min-height: 100px;
  max-height: 115px;
  overflow-anchor: none;
}

.ad-banner-compact {
  display: inline-block !important;
  width: 320px !important;
  height: 100px !important;
  max-width: 100%;
}

@media (min-width: 500px) {
  .top-banner-wrapper {
    min-height: 60px;
    max-height: 70px;
    margin: 8px auto 14px;
  }
  .ad-banner-compact {
    width: 468px !important;
    height: 60px !important;
  }
}

@media (min-width: 800px) {
  .top-banner-wrapper {
    min-height: 90px;
    max-height: 105px;
    margin: 12px auto 20px;
  }
  .ad-banner-compact {
    width: 728px !important;
    height: 90px !important;
  }
}