/**
 * MC NovaTools - Design System
 * Modern, premium dark theme design system
 * Refined for clearer UX, better trust signals and consistent dark surfaces
 */

/* ============================================
   CSS CUSTOM PROPERTIES (Design Tokens)
   ============================================ */
:root {
  color-scheme: light dark;

  /* Brand palettes — HSL tokens (50-900) */
  --color-primary-50: hsl(220 100% 97%);
  --color-primary-100: hsl(220 96% 93%);
  --color-primary-200: hsl(220 95% 86%);
  --color-primary-300: hsl(220 93% 76%);
  --color-primary-400: hsl(220 91% 66%);
  --color-primary-500: hsl(220 90% 56%);
  --color-primary-600: hsl(220 82% 48%);
  --color-primary-700: hsl(220 76% 40%);
  --color-primary-800: hsl(220 68% 32%);
  --color-primary-900: hsl(220 62% 24%);

  --color-secondary-50: hsl(260 100% 98%);
  --color-secondary-100: hsl(260 92% 94%);
  --color-secondary-200: hsl(260 90% 88%);
  --color-secondary-300: hsl(260 88% 78%);
  --color-secondary-400: hsl(260 84% 68%);
  --color-secondary-500: hsl(260 82% 60%);
  --color-secondary-600: hsl(260 72% 52%);
  --color-secondary-700: hsl(260 64% 44%);
  --color-secondary-800: hsl(260 58% 35%);
  --color-secondary-900: hsl(260 52% 27%);

  --color-accent-50: hsl(188 100% 96%);
  --color-accent-100: hsl(188 96% 90%);
  --color-accent-200: hsl(188 94% 82%);
  --color-accent-300: hsl(188 92% 70%);
  --color-accent-400: hsl(188 88% 58%);
  --color-accent-500: hsl(188 86% 49%);
  --color-accent-600: hsl(188 78% 42%);
  --color-accent-700: hsl(188 70% 34%);
  --color-accent-800: hsl(188 62% 27%);
  --color-accent-900: hsl(188 56% 21%);

  --color-success-50: hsl(145 80% 96%);
  --color-success-100: hsl(145 76% 90%);
  --color-success-200: hsl(145 72% 80%);
  --color-success-300: hsl(145 68% 68%);
  --color-success-400: hsl(145 64% 54%);
  --color-success-500: hsl(145 70% 42%);
  --color-success-600: hsl(145 76% 34%);
  --color-success-700: hsl(145 70% 27%);
  --color-success-800: hsl(145 64% 22%);
  --color-success-900: hsl(145 58% 17%);

  --color-warning-50: hsl(42 100% 96%);
  --color-warning-100: hsl(42 96% 89%);
  --color-warning-200: hsl(42 94% 78%);
  --color-warning-300: hsl(42 92% 65%);
  --color-warning-400: hsl(42 90% 55%);
  --color-warning-500: hsl(42 88% 48%);
  --color-warning-600: hsl(38 86% 42%);
  --color-warning-700: hsl(34 78% 34%);
  --color-warning-800: hsl(31 68% 27%);
  --color-warning-900: hsl(28 60% 21%);

  --color-error-50: hsl(0 86% 97%);
  --color-error-100: hsl(0 84% 92%);
  --color-error-200: hsl(0 82% 84%);
  --color-error-300: hsl(0 80% 74%);
  --color-error-400: hsl(0 78% 64%);
  --color-error-500: hsl(0 76% 56%);
  --color-error-600: hsl(0 70% 48%);
  --color-error-700: hsl(0 64% 40%);
  --color-error-800: hsl(0 58% 32%);
  --color-error-900: hsl(0 52% 25%);

  --color-info-50: hsl(205 100% 97%);
  --color-info-100: hsl(205 96% 92%);
  --color-info-200: hsl(205 94% 84%);
  --color-info-300: hsl(205 92% 74%);
  --color-info-400: hsl(205 90% 64%);
  --color-info-500: hsl(205 88% 54%);
  --color-info-600: hsl(205 80% 46%);
  --color-info-700: hsl(205 72% 38%);
  --color-info-800: hsl(205 64% 30%);
  --color-info-900: hsl(205 56% 23%);

  /* Semantic color tokens — light default */
  --color-background: hsl(220 43% 98%);
  --color-bg-primary: var(--color-background);
  --color-bg-secondary: hsl(220 38% 95%);
  --color-bg-tertiary: hsl(220 32% 91%);
  --color-bg-elevated: hsl(0 0% 100%);
  --color-bg-hover: hsl(220 44% 94%);
  --color-surface: hsl(0 0% 100% / 0.92);
  --color-surface-hover: hsl(220 72% 96% / 0.96);
  --color-surface-active: hsl(220 68% 92% / 0.98);
  --color-surface-elevated: hsl(0 0% 100%);
  --color-text-primary: hsl(224 32% 11%);
  --color-text-secondary: hsl(224 20% 30%);
  --color-text-tertiary: hsl(224 14% 44%);
  --color-text-muted: hsl(224 10% 56%);
  --color-border: hsl(224 24% 84% / 0.9);
  --color-border-hover: hsl(220 70% 56% / 0.35);
  --color-border-strong: hsl(224 24% 70%);
  --color-divider: hsl(224 24% 88%);
  --color-accent: var(--color-accent-500);
  --color-accent-hover: var(--color-accent-400);
  --color-accent-glow: hsl(188 86% 49% / 0.24);
  --color-accent-subtle: hsl(188 86% 49% / 0.12);
  --color-accent-secondary: var(--color-secondary-500);
  --color-accent-secondary-glow: hsl(260 82% 60% / 0.2);
  --color-accent-warm: var(--color-error-500);
  --color-accent-warm-glow: hsl(0 76% 56% / 0.16);
  --color-success: var(--color-success-500);
  --color-warning: var(--color-warning-500);
  --color-error: var(--color-error-500);
  --color-info: var(--color-info-500);

  /* Backward-compatible aliases used by legacy pages */
  --text-primary: var(--color-text-primary);
  --text-secondary: var(--color-text-secondary);
  --text-muted: var(--color-text-muted);
  --surface: var(--color-surface);
  --surface-elevated: var(--color-surface-elevated);
  --border: var(--color-border);
  --divider: var(--color-divider);

  /* Typography */
  --font-sans: 'Inter', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
  --font-family: var(--font-sans);
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
  --text-xs: 0.75rem/1rem var(--font-sans);
  --text-sm: 0.875rem/1.25rem var(--font-sans);
  --text-base: 1rem/1.5rem var(--font-sans);
  --text-lg: 1.125rem/1.75rem var(--font-sans);
  --text-xl: 1.25rem/1.75rem var(--font-sans);
  --text-2xl: 1.5rem/2rem var(--font-sans);
  --text-3xl: 1.875rem/2.25rem var(--font-sans);
  --text-4xl: 2.25rem/2.5rem var(--font-sans);
  --text-5xl: 3rem/1 var(--font-sans);
  --text-6xl: 3.75rem/1 var(--font-sans);
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  --font-size-6xl: 3.75rem;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --line-height-tight: 1.15;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  --letter-spacing-tight: -0.035em;
  --letter-spacing-normal: 0;
  --letter-spacing-wide: 0.02em;
  --font-h1: 800 var(--font-size-5xl)/1 var(--font-sans);
  --font-h2: 750 var(--font-size-4xl)/1.1 var(--font-sans);
  --font-h3: 700 var(--font-size-3xl)/1.2 var(--font-sans);
  --font-h4: 700 var(--font-size-2xl)/1.25 var(--font-sans);
  --font-h5: 650 var(--font-size-xl)/1.35 var(--font-sans);
  --font-h6: 650 var(--font-size-lg)/1.4 var(--font-sans);

  /* Spacing — 4px base */
  --space-0: 0;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-7: 1.75rem;
  --space-8: 2rem;
  --space-9: 2.25rem;
  --space-10: 2.5rem;
  --space-11: 2.75rem;
  --space-12: 3rem;
  --space-14: 3.5rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --section-py: clamp(var(--space-12), 8vw, var(--space-20));
  --container-padding: var(--space-4);
  --grid-gap: var(--space-5);

  /* Layout and breakpoints */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
  --container-max: var(--container-xl);
  --bp-sm: 640px;
  --bp-md: 768px;
  --bp-lg: 1024px;
  --bp-xl: 1280px;

  /* Radius and elevation */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.25rem;
  --radius-2xl: 1.75rem;
  --radius-full: 9999px;
  --shadow-sm: 0 1px 2px hsl(224 32% 11% / 0.08);
  --shadow-md: 0 10px 24px hsl(224 32% 11% / 0.10);
  --shadow-lg: 0 18px 44px hsl(224 32% 11% / 0.14);
  --shadow-xl: 0 24px 64px hsl(224 32% 11% / 0.18);
  --shadow-2xl: 0 32px 96px hsl(224 32% 11% / 0.22);
  --shadow-glow: 0 0 40px var(--color-accent-glow);
  --shadow-glow-strong: 0 0 60px hsl(188 86% 49% / 0.28);

  /* Transitions and layers */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-modal: 1050;
  --z-toast: 1080;
  --z-popover: 1090;
  --z-tooltip: 1100;
}

:root[data-theme="dark"] {
  --color-background: hsl(228 38% 4%);
  --color-bg-primary: hsl(228 38% 4%);
  --color-bg-secondary: hsl(224 44% 8%);
  --color-bg-tertiary: hsl(222 42% 12%);
  --color-bg-elevated: hsl(222 38% 14%);
  --color-bg-hover: hsl(222 36% 18%);
  --color-surface: hsl(222 38% 14% / 0.72);
  --color-surface-hover: hsl(222 36% 18% / 0.82);
  --color-surface-active: hsl(222 32% 22% / 0.9);
  --color-surface-elevated: hsl(222 38% 14%);
  --color-text-primary: hsl(210 40% 98%);
  --color-text-secondary: hsl(214 28% 82%);
  --color-text-tertiary: hsl(215 20% 65%);
  --color-text-muted: hsl(215 16% 48%);
  --color-border: hsl(214 32% 91% / 0.09);
  --color-border-hover: hsl(188 86% 49% / 0.28);
  --color-border-strong: hsl(214 32% 91% / 0.22);
  --color-divider: hsl(214 32% 91% / 0.12);
  --color-accent-glow: hsl(188 86% 49% / 0.28);
  --color-accent-secondary-glow: hsl(260 82% 60% / 0.22);
  --color-accent-warm-glow: hsl(0 76% 56% / 0.18);
  --shadow-sm: 0 1px 2px hsl(0 0% 0% / 0.28);
  --shadow-md: 0 10px 24px hsl(0 0% 0% / 0.26);
  --shadow-lg: 0 18px 44px hsl(0 0% 0% / 0.34);
  --shadow-xl: 0 24px 64px hsl(0 0% 0% / 0.42);
  --shadow-2xl: 0 32px 96px hsl(0 0% 0% / 0.5);
  --shadow-glow-strong: 0 0 60px hsl(188 86% 49% / 0.18);
}


/* ============================================
   BASE STYLES
   ============================================ */
html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background:
    radial-gradient(circle at top left, rgba(239, 68, 68, 0.08), transparent 24%),
    radial-gradient(circle at top right, rgba(34, 211, 238, 0.08), transparent 24%),
    linear-gradient(180deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 100%);
  color: var(--color-text-primary);
  line-height: var(--line-height-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}

#app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ============================================
   LAYOUT - Container
   ============================================ */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

@media (min-width: 640px) {
  :root {
    --container-padding: var(--space-8);
  }
}

/* ============================================
   HEADER
   ============================================ */
.app-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background: rgba(6, 7, 11, 0.72);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.16);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: var(--space-4);
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-lg);
  color: var(--color-text-primary);
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.logo:hover {
  opacity: 0.92;
  transform: translateY(-1px);
}

.logo-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.logo-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.logo-text {
  display: none;
}

@media (min-width: 640px) {
  .logo-text {
    display: block;
  }
}

/* Navigation */
.main-nav {
  display: none;
  align-items: center;
  gap: var(--space-1);
}

@media (min-width: 768px) {
  .main-nav {
    display: flex;
  }
}

.nav-link {
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-text-primary);
  background: var(--color-surface);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.04);
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.btn-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.mobile-menu-toggle {
  display: flex;
}

@media (min-width: 768px) {
  .mobile-menu-toggle {
    display: none;
  }
}

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: 68px;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(6, 7, 11, 0.96);
  z-index: var(--z-modal);
  padding: var(--space-4);
  backdrop-filter: blur(18px);
}

.mobile-menu.active {
  display: block;
}

.mobile-nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.mobile-nav-link {
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  transition: background var(--transition-fast), border-color var(--transition-fast);
  border: 1px solid transparent;
}

.mobile-nav-link:hover {
  background: var(--color-surface);
  border-color: var(--color-border);
}

/* ============================================
   SEARCH MODAL
   ============================================ */
.search-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(2, 6, 23, 0.72);
  backdrop-filter: blur(10px);
  z-index: var(--z-modal);
  padding: var(--space-6);
  align-items: flex-start;
  justify-content: center;
}

.search-modal.active {
  display: flex;
}

.search-container {
  width: 100%;
  max-width: 640px;
  margin-top: 10vh;
}

.search-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  background: linear-gradient(180deg, rgba(19, 28, 49, 0.94), rgba(10, 14, 24, 0.96));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-4);
  box-shadow: var(--shadow-lg);
}

.search-icon {
  color: var(--color-text-tertiary);
  margin-right: var(--space-3);
}

.search-input {
  flex: 1;
  background: transparent;
  border: none;
  font-size: var(--font-size-lg);
  color: var(--color-text-primary);
  outline: none;
}

.search-input::placeholder {
  color: var(--color-text-tertiary);
}

.search-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface);
  border: none;
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  font-size: var(--font-size-xl);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.search-close:hover {
  background: var(--color-surface-hover);
  color: var(--color-text-primary);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  transition: all var(--transition-fast);
  border: none;
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-secondary) 100%);
  color: white;
  box-shadow: 0 14px 34px rgba(34, 211, 238, 0.18);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--color-accent-hover) 0%, #a78bfa 100%);
  transform: translateY(-1px);
  box-shadow: var(--shadow-glow-strong);
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-border-hover);
}

.btn-lg {
  padding: var(--space-4) var(--space-6);
  font-size: var(--font-size-base);
  border-radius: var(--radius-lg);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
  position: relative;
  padding: var(--space-16) 0;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 40%, transparent 70%);
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(110px);
  opacity: 0.18;
}

.hero-glow-1 {
  width: 600px;
  height: 600px;
  background: var(--color-accent);
  top: -200px;
  right: -100px;
}

.hero-glow-2 {
  width: 440px;
  height: 440px;
  background: var(--color-accent-secondary);
  bottom: -100px;
  left: -100px;
}

.hero-content {
  position: relative;
  text-align: center;
  max-width: 820px;
  margin: 0 auto;
}

.hero-title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  margin-bottom: var(--space-6);
  letter-spacing: -0.03em;
}

@media (min-width: 640px) {
  .hero-title {
    font-size: var(--font-size-5xl);
  }
}

.text-gradient {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-secondary) 52%, var(--color-accent-warm) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  max-width: 640px;
  margin: 0 auto var(--space-8);
  line-height: var(--line-height-relaxed);
}

.hero-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  justify-content: center;
  margin-bottom: var(--space-12);
}

@media (min-width: 640px) {
  .hero-actions {
    flex-direction: row;
  }
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: var(--space-12);
  flex-wrap: wrap;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
}

.stat-value {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

/* ============================================
   SEARCH SECTION
   ============================================ */
.search-section {
  padding: var(--space-8) 0;
  background: rgba(8, 13, 24, 0.72);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(12px);
}

.search-box {
  position: relative;
  display: flex;
  align-items: center;
  max-width: 700px;
  margin: 0 auto var(--space-4);
}

.search-box-icon {
  position: absolute;
  left: var(--space-4);
  color: var(--color-text-tertiary);
  pointer-events: none;
}

.search-box-input {
  width: 100%;
  padding: var(--space-4) var(--space-4) var(--space-4) var(--space-12);
  background: linear-gradient(180deg, rgba(19, 28, 49, 0.95), rgba(10, 14, 24, 0.98));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  font-size: var(--font-size-base);
  color: var(--color-text-primary);
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-md);
}

.search-box-input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-subtle), var(--shadow-md);
}

.search-box-input::placeholder {
  color: var(--color-text-tertiary);
}

.search-box-btn {
  position: absolute;
  right: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-secondary) 100%);
  color: white;
  border: none;
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.search-box-btn:hover {
  filter: brightness(1.06);
}

.search-tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
}

.search-tag-label {
  color: var(--color-text-tertiary);
}

.search-tag {
  padding: var(--space-1) var(--space-3);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  color: var(--color-text-secondary);
  font-size: var(--font-size-xs);
  transition: all var(--transition-fast);
}

.search-tag:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-border-hover);
  color: var(--color-text-primary);
}

/* ============================================
   PAGE HEADER (Category Pages)
   ============================================ */
.page-header {
  padding: var(--space-12) 0 var(--space-8);
  background: rgba(8, 13, 24, 0.88);
  border-bottom: 1px solid var(--color-border);
}

.breadcrumbs {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

.breadcrumbs a {
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.breadcrumbs a:hover {
  color: var(--color-text-primary);
}

.page-title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-4);
  letter-spacing: -0.03em;
}

.page-description {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  max-width: 640px;
}

/* ============================================
   SECTIONS
   ============================================ */
.section {
  padding: var(--space-20) 0;
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto var(--space-12);
}

.section-title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-4);
  letter-spacing: -0.03em;
}

.section-description {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
}

/* ============================================
   CATEGORIES GRID
   ============================================ */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: var(--space-4);
}

@media (min-width: 640px) {
  .categories-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .categories-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1280px) {
  .categories-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Category Card */
.category-card {
  display: flex;
  flex-direction: column;
  padding: var(--space-6);
  background: linear-gradient(180deg, rgba(19, 28, 49, 0.82), rgba(10, 14, 24, 0.94));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
}

.category-card:hover {
  background: linear-gradient(180deg, rgba(24, 35, 61, 0.88), rgba(11, 16, 32, 0.98));
  border-color: rgba(34, 211, 238, 0.22);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.category-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-4);
}

.category-name {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-2);
}

.category-description {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
  flex: 1;
}

.category-meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
}

.category-count {
  padding: var(--space-1) var(--space-2);
  background: var(--color-surface-active);
  border-radius: var(--radius-sm);
}

/* ============================================
   TOOLS GRID
   ============================================ */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: var(--space-4);
}

@media (min-width: 640px) {
  .tools-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .tools-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1280px) {
  .tools-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Tool Card */
.tool-card {
  display: flex;
  flex-direction: column;
  padding: var(--space-5);
  background: linear-gradient(180deg, rgba(19, 28, 49, 0.82), rgba(10, 14, 24, 0.96));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
}

.tool-card:hover {
  border-color: rgba(34, 211, 238, 0.24);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.tool-header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.tool-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-accent-subtle), rgba(139, 92, 246, 0.12));
  border-radius: var(--radius-md);
  color: var(--color-accent);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.tool-badges {
  display: flex;
  gap: var(--space-1);
  margin-left: auto;
}

.tool-badge {
  padding: var(--space-1) var(--space-2);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-sm);
}

.tool-badge-popular {
  background: rgba(245, 158, 11, 0.15);
  color: var(--color-warning);
}

.tool-badge-new {
  background: rgba(34, 197, 94, 0.15);
  color: var(--color-success);
}

.tool-name {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-2);
}

.tool-description {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-4);
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.tool-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
}

.tool-category {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
}

.tool-link {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-accent);
  transition: color var(--transition-fast), gap var(--transition-fast);
}

.tool-link:hover {
  color: var(--color-accent-hover);
  gap: calc(var(--space-1) + 2px);
}

/* ============================================
   FEATURES SECTION
   ============================================ */
.section-features {
  background: rgba(8, 13, 24, 0.72);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(10px);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: var(--space-8);
}

@media (min-width: 640px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.feature {
  text-align: center;
}

.feature-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-4);
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.10), rgba(139, 92, 246, 0.10));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  color: var(--color-accent);
  box-shadow: var(--shadow-sm);
}

.feature-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-2);
}

.feature-description {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

/* ============================================
   CTA SECTION
   ============================================ */
.section-cta {
  padding: var(--space-16) 0;
}

.cta-box {
  text-align: center;
  padding: var(--space-12) var(--space-8);
  background:
    radial-gradient(circle at top left, rgba(239, 68, 68, 0.10), transparent 28%),
    linear-gradient(135deg, rgba(34, 211, 238, 0.10) 0%, rgba(139, 92, 246, 0.12) 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-lg);
}

.cta-title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-4);
  letter-spacing: -0.03em;
}

.cta-description {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  max-width: 560px;
  margin: 0 auto var(--space-8);
}

/* ============================================
   FOOTER - ENHANCED FOR GOOGLE TRUST
   ============================================ */
.app-footer {
  margin-top: auto;
  background: rgba(8, 13, 24, 0.88);
  border-top: 1px solid var(--color-border);
}

/* Trust Bar - Google Compliance */
.footer-trust-bar {
  background: rgba(16, 23, 42, 0.82);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-6) 0;
}

.trust-items {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

@media (min-width: 768px) {
  .trust-items {
    grid-template-columns: repeat(4, 1fr);
  }
}

.trust-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
}

.trust-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface);
  border-radius: var(--radius-md);
  color: var(--color-accent);
  flex-shrink: 0;
  border: 1px solid rgba(255, 255, 255, 0.04);
}

.trust-content h4 {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-1);
}

.trust-content p {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  line-height: 1.4;
}

/* Main Footer Content */
.footer-main {
  padding: var(--space-16) 0 var(--space-8);
}

.footer-grid {
  display: grid;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 1.5fr 2fr;
  }
}

/* Brand Section */
.footer-brand {
  max-width: 320px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.footer-logo-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-surface);
}

.footer-logo-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.footer-logo-text {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
}

.footer-description {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-6);
}

/* Contact Info */
.footer-contact {
  padding: var(--space-4);
  background: linear-gradient(180deg, rgba(19, 28, 49, 0.72), rgba(10, 14, 24, 0.88));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.contact-title {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-3);
}

.contact-person {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  margin-bottom: var(--space-1);
}

.contact-role {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-3);
}

.contact-email {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--color-accent);
  word-break: break-all;
}

.contact-email:hover {
  color: var(--color-accent-hover);
}

/* Footer Links Grid */
.footer-links {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-8);
}

@media (min-width: 640px) {
  .footer-links {
    grid-template-columns: repeat(3, 1fr);
  }
}

.footer-column-title {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-4);
}

.footer-column-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-column-list a {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.footer-column-list a:hover {
  color: var(--color-text-primary);
}

/* Legal Bar */
.footer-legal-bar {
  background: rgba(6, 7, 11, 0.94);
  border-top: 1px solid var(--color-border);
  padding: var(--space-6) 0;
}

.legal-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  align-items: center;
  text-align: center;
}

@media (min-width: 768px) {
  .legal-content {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.legal-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-4);
}

.legal-links a {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  transition: color var(--transition-fast);
}

.legal-links a:hover {
  color: var(--color-text-primary);
}

.legal-divider {
  color: var(--color-text-muted);
}

.copyright {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

/* Owner Signature */
.owner-signature {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.06) 0%, rgba(139, 92, 246, 0.08) 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-top: var(--space-6);
}

.owner-avatar {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: var(--color-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-accent);
  flex-shrink: 0;
}

.owner-info h4 {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-1);
}

.owner-info p {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-2);
}

.owner-info a {
  font-size: var(--font-size-xs);
  color: var(--color-accent);
}

.owner-info a:hover {
  color: var(--color-accent-hover);
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ============================================
   ADSENSE READINESS CONTENT LAYER
   ============================================ */
.section-eyebrow {
  display: inline-flex;
  margin-bottom: var(--space-3);
  color: var(--color-accent);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.use-case-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: var(--space-4);
}

@media (min-width: 768px) {
  .use-case-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.use-case-card,
.editorial-panel {
  background: linear-gradient(180deg, rgba(19, 28, 49, 0.86), rgba(10, 14, 24, 0.96));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
}

.use-case-card {
  padding: var(--space-6);
}

.use-case-card h3 {
  margin: 0 0 var(--space-3);
  font-size: var(--font-size-xl);
}

.use-case-card p {
  margin: 0 0 var(--space-5);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

.use-case-card a,
.editorial-links a {
  color: var(--color-accent);
  font-weight: var(--font-weight-semibold);
}

.use-case-kicker {
  display: inline-flex;
  margin-bottom: var(--space-3);
  color: var(--color-text-tertiary);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.editorial-panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  padding: var(--space-8);
}

@media (min-width: 900px) {
  .editorial-panel {
    grid-template-columns: minmax(0, 1fr) 320px;
    align-items: center;
  }
}

.editorial-links {
  display: grid;
  gap: var(--space-3);
}

.editorial-links a {
  display: flex;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.tool-decision-note,
.category-decision-note {
  margin-top: var(--space-3);
  color: var(--color-text-tertiary);
  font-size: var(--font-size-xs);
  line-height: var(--line-height-relaxed);
}

/* Public editorial layout helpers shared by generated blog pages. */
.article-shell .main-header,
.blog-hub .main-header {
  backdrop-filter: blur(18px);
}

.article-shell .summary-box strong,
.blog-card h3,
.related-panel h3 {
  color: var(--text-primary);
}

.blog-card-image img {
  transition: transform 0.25s ease, filter 0.25s ease;
}

.blog-card:hover .blog-card-image img {
  transform: scale(1.035);
  filter: saturate(1.08);
}

.article-faq[open] {
  border-color: rgba(34, 211, 238, 0.26);
  background: rgba(15, 23, 42, 0.88);
}

/* ============================================
   PHASE 1 GLOBAL INTERACTION STATES
   ============================================ */
html {
  color-scheme: light dark;
}

body,
.app-header,
.app-footer,
.card,
.tool-card,
.category-card,
.blog-card,
input,
textarea,
select,
button {
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

:focus:not(:focus-visible) {
  outline: none;
}

:focus-visible {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
}

.skeleton,
.nt-skeleton {
  position: relative;
  overflow: hidden;
  background: linear-gradient(90deg, var(--color-surface), var(--color-surface-hover), var(--color-surface));
  background-size: 200% 100%;
  animation: nt-shimmer 1.4s ease-in-out infinite;
}

@keyframes nt-shimmer {
  from { background-position: 200% 0; }
  to { background-position: -200% 0; }
}