/* AI Cafe Website - Main Stylesheet */
/* Nuvolo & Trane Technologies AI Learning Initiative */

/* CSS Custom Properties (Variables) */
:root {
  /* Nuvolo & Trane Technologies Brand Colors */
  --color-primary: #1E3A8A;
  --color-primary-dark: #1E40AF;
  --color-primary-light: #3B82F6;
  --color-secondary: #1F2937;
  --color-accent: #00AEEF;
  --color-accent-dark: #0085b7;
  --color-bg: #FFFFFF;
  --color-text: #0F172A;
  --color-nuvolo: #1E3A8A;
  --color-trane: #0066CC;
  
  /* Neutral Colors */
  --color-white: #FFFFFF;
  --color-gray-50: #F8FAFC;
  --color-gray-100: #F1F5F9;
  --color-gray-200: #E2E8F0;
  --color-gray-300: #CBD5E1;
  --color-gray-400: #94A3B8;
  --color-gray-500: #64748B;
  --color-gray-600: #475569;
  --color-gray-700: #334155;
  --color-gray-800: #1E293B;
  --color-gray-900: #0F172A;
  
  /* Typography */
  --font-family-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-family-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, monospace;
  
  /* Font Weights */
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* Font Sizes */
  --font-size-xs: 0.75rem;    /* 12px */
  --font-size-sm: 0.875rem;   /* 14px */
  --font-size-base: 1rem;     /* 16px */
  --font-size-lg: 1.125rem;   /* 18px */
  --font-size-xl: 1.25rem;    /* 20px */
  --font-size-2xl: 1.5rem;    /* 24px */
  --font-size-3xl: 1.875rem;  /* 30px */
  --font-size-4xl: 2.25rem;   /* 36px */
  --font-size-5xl: 3rem;      /* 48px */
  --font-size-6xl: 3.75rem;   /* 60px */
  
  /* Line Heights */
  --line-height-tight: 1.25;
  --line-height-snug: 1.375;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;
  --line-height-loose: 2;
  
  /* Spacing */
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.25rem;   /* 20px */
  --space-6: 1.5rem;    /* 24px */
  --space-8: 2rem;      /* 32px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */
  --space-16: 4rem;     /* 64px */
  --space-20: 5rem;     /* 80px */
  --space-24: 6rem;     /* 96px */
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;
  
  /* Z-Index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal: 1040;
  --z-popover: 1050;
  --z-tooltip: 1060;
}

[data-theme="dark"] {
  --color-bg: #0F172A;
  --color-text: #F8FAFC;
  --color-gray-50: #1E293B;
  --color-gray-100: #334155;
  --color-gray-200: #475569;
  --color-gray-300: #64748B;
  --color-gray-400: #94A3B8;
  --color-gray-500: #CBD5E1;
  --color-gray-600: #E2E8F0;
  --color-gray-700: #F1F5F9;
  --color-gray-800: #F8FAFC;
  --color-gray-900: #FFFFFF;
}

/* Dark theme specific overrides for better contrast */
[data-theme="dark"] .hero-title {
  color: #000000 !important;
  text-shadow: 0 0 8px rgba(255,255,255,0.8);
}

[data-theme="dark"] .hero-subtitle {
  color: #1E293B !important;
  text-shadow: 0 0 4px rgba(255,255,255,0.6);
}

[data-theme="dark"] .hero-description {
  color: #334155 !important;
  text-shadow: 0 0 4px rgba(255,255,255,0.5);
}

[data-theme="dark"] .stat-number {
  color: #000000 !important;
  text-shadow: 0 0 6px rgba(255,255,255,0.7);
}

[data-theme="dark"] .stat-label {
  color: #1E293B !important;
  text-shadow: 0 0 4px rgba(255,255,255,0.6);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family-primary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Skip Link for Accessibility */
.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-2) var(--space-4);
  text-decoration: none;
  border-radius: var(--radius-md);
  z-index: var(--z-tooltip);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 6px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  color: var(--color-gray-900);
  margin-bottom: var(--space-4);
}

h1 {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
}

h2 {
  font-size: var(--font-size-3xl);
}

h3 {
  font-size: var(--font-size-2xl);
}

h4 {
  font-size: var(--font-size-xl);
}

h5 {
  font-size: var(--font-size-lg);
}

h6 {
  font-size: var(--font-size-base);
}

p {
  margin-bottom: var(--space-4);
  line-height: var(--line-height-relaxed);
}

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

a:hover,
a:focus {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

/* Layout Utilities */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@media (min-width: 640px) {
  .container {
    padding: 0 var(--space-6);
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 var(--space-8);
  }
}

/* Header Styles */
.header {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-gray-200);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.nav {
  padding: var(--space-4) 0;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
}

.brand-link {
  display: flex;
  align-items: center;
  text-decoration: none;
  color: var(--color-text);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-xl);
}

.brand-logo {
  width: 96px;
  height: 96px;
  margin-right: var(--space-3);
}

.brand-text {
  color: var(--color-primary);
}

/* Logo theme adjustments */
[data-theme="dark"] .brand-logo {
  filter: brightness(0) invert(1);
}

[data-theme="light"] .brand-logo {
  filter: none;
}

.nav-controls {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
}

.theme-toggle {
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--color-text);
  font-size: 1.25rem;
  margin-left: var(--space-2);
  padding: var(--space-2);
  transition: transform var(--transition-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
}

.theme-toggle:hover { transform: scale(1.05); }

.theme-toggle:focus { outline: 2px solid var(--color-accent); outline-offset: 2px; }

.nav-toggle:hover {
  background-color: var(--color-gray-100);
}

.hamburger {
  width: 24px;
  height: 2px;
  background-color: var(--color-gray-700);
  margin: 2px 0;
  transition: var(--transition-fast);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--space-8);
}

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

.nav-link:hover,
.nav-link:focus {
  color: var(--color-primary);
  background-color: var(--color-gray-50);
  text-decoration: none;
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--color-gray-50) 0%, var(--color-white) 100%);
  padding: var(--space-20) 0;
  position: relative;
  overflow: hidden;
}

/* Homepage hero banner background */
.hero-banner {
  --banner-image: url('src/assets/images/AICafeBanner3.jpg');
  background-image:
    linear-gradient(180deg, rgba(255,255,255,0.85) 0%, rgba(255,255,255,0.88) 20%, rgba(255,255,255,0.92) 40%, rgba(255,255,255,0.96) 60%, rgba(255,255,255,1) 100%),
    var(--banner-image);
  background-size: cover;
  background-position: center;
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  align-items: center;
}

@media (min-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr 1fr;
    padding: 0 var(--space-8);
  }
}

.hero-content {
  text-align: center;
}

@media (min-width: 1024px) {
  .hero-content {
    text-align: left;
  }
}

.hero-title {
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  margin-bottom: var(--space-6);
  color: var(--color-gray-900);
}

@media (min-width: 640px) {
  .hero-title {
    font-size: var(--font-size-6xl);
  }
}

.highlight {
  color: var(--color-primary);
  position: relative;
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-gray-600);
  margin-bottom: var(--space-4);
  font-weight: var(--font-weight-medium);
}

.hero-description {
  font-size: var(--font-size-lg);
  color: var(--color-gray-600);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-8);
  max-width: 600px;
}

@media (min-width: 1024px) {
  .hero-description {
    max-width: none;
  }
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: var(--space-8);
  margin-bottom: var(--space-8);
}

@media (min-width: 1024px) {
  .hero-stats {
    justify-content: flex-start;
  }
}

.stat {
  text-align: center;
}

.stat-number {
  display: block;
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  line-height: var(--line-height-tight);
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  font-weight: var(--font-weight-medium);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.hero-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  align-items: center;
}

@media (min-width: 640px) {
  .hero-actions {
    flex-direction: row;
    gap: var(--space-6);
  }
}

@media (min-width: 1024px) {
  .hero-actions {
    justify-content: flex-start;
  }
}

/* Hero Visual */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-graphic {
  position: relative;
  width: 300px;
  height: 300px;
}

/* Subtle brand orbs behind the SVG to hint Nuvolo/Trane */
/* Disabled background orbs by default for a cleaner look */
.hero-graphic::before,
.hero-graphic::after { display: none; }

.hero-graphic::before {
  width: 180px;
  height: 180px;
  left: -20px;
  top: 40px;
  background: radial-gradient(circle at 30% 30%, #1E3A8A, transparent 60%);
}

.hero-graphic::after {
  width: 160px;
  height: 160px;
  right: -10px;
  bottom: 30px;
  background: radial-gradient(circle at 70% 70%, #E53E3E, transparent 60%);
  animation-delay: 4s;
}

@keyframes floatSlow {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-8px) scale(1.02); }
}

/* Banner selector thumbnails */
.banner-selector {
  position: absolute;
  bottom: 12px;
  right: 12px;
  display: flex;
  gap: 8px;
}

.banner-thumb {
  border: 2px solid #fff;
  border-radius: 4px;
  padding: 0;
  background: transparent;
  cursor: pointer;
}

.banner-thumb img {
  display: block;
  width: 60px;
  height: 40px;
  object-fit: cover;
  border-radius: 2px;
}

.banner-thumb.active {
  border-color: var(--color-nuvolo);
}

/* Neural-network SVG visual (topic-aligned) */
.ai-network {
  width: 100%;
  height: 100%;
}

.ai-network .pulse {
  stroke-dasharray: 4 14;
  animation: dashMove 6s linear infinite;
  opacity: 0.6;
}

/* Base node visuals/animation (gradient fill is page-scoped below) */
.ai-network .node {
  filter: drop-shadow(0 6px 12px rgba(30, 58, 138, 0.22));
  animation: nodePulse 5s ease-in-out infinite;
}

/* Home page neural network uses a shared gradient id `#nnGradient` */
.page-home .ai-network .node:not(.logo-node) {
  fill: url(#nnGradient);
}

@keyframes dashMove {
  to {
    stroke-dashoffset: -120;
  }
}

@keyframes nodePulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.06); }
}

/* Button Styles */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-normal);
  border: 1px solid transparent;
  border-radius: var(--radius-lg);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  min-width: 120px;
  height: auto;
  box-sizing: border-box;
  position: relative;           /* keep click effects contained */
  overflow: hidden;             /* prevent ripple from resizing */
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: var(--color-white);
  text-decoration: none;
  box-shadow: var(--shadow-md);
}

.btn-primary:focus {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: var(--color-white);
  text-decoration: none;
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.btn-primary:active {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: var(--color-white);
  text-decoration: none;
  box-shadow: var(--shadow-sm);
}

.btn-secondary {
  background-color: var(--color-white);
  color: var(--color-gray-700);
  border-color: var(--color-gray-300);
}

.btn-secondary:hover {
  background-color: var(--color-gray-50);
  border-color: var(--color-gray-400);
  color: var(--color-gray-800);
  text-decoration: none;
  box-shadow: var(--shadow-md);
}

.btn-secondary:focus {
  background-color: var(--color-gray-50);
  border-color: var(--color-gray-400);
  color: var(--color-gray-800);
  text-decoration: none;
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.btn-secondary:active {
  background-color: var(--color-gray-50);
  border-color: var(--color-gray-400);
  color: var(--color-gray-800);
  text-decoration: none;
  box-shadow: var(--shadow-sm);
}

.btn-large {
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-size-lg);
  min-width: 160px;
}

/* Section Styles */
section {
  padding: var(--space-20) 0;
}

.section-title {
  text-align: center;
  margin-bottom: var(--space-6);
  color: var(--color-gray-900);
}

.section-subtitle {
  text-align: center;
  font-size: var(--font-size-lg);
  color: var(--color-gray-600);
  margin-bottom: var(--space-12);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.section-actions {
  text-align: center;
  margin-top: var(--space-12);
}

/* Highlights Section */
.highlights {
  background-color: var(--color-gray-50);
}

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

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

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

.highlight-card {
  background: var(--color-white);
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  text-align: center;
  transition: all var(--transition-normal);
  border: 1px solid var(--color-gray-200);
}

.highlight-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}

.card-icon {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-4);
}

.card-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-4);
  color: var(--color-gray-900);
}

.card-description {
  color: var(--color-gray-600);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-6);
}

.card-link {
  color: var(--color-primary);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.card-link:hover,
.card-link:focus {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 1023px) {
  .nav-toggle {
    display: flex;
  }
  
  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-white);
    border-top: 1px solid var(--color-gray-200);
    flex-direction: column;
    gap: 0;
    padding: var(--space-4);
    box-shadow: var(--shadow-lg);
  }
  
  .nav-menu.active {
    display: flex;
  }
  
  .nav-link {
    padding: var(--space-4);
    border-bottom: 1px solid var(--color-gray-100);
  }
  
  .nav-link:last-child {
    border-bottom: none;
  }
}

@media (max-width: 639px) {
  .hero {
    padding: var(--space-16) 0;
  }
  
  .hero-title {
    font-size: var(--font-size-4xl);
  }
  
  .hero-stats {
    flex-direction: column;
    gap: var(--space-4);
  }
  
  .stat {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
  }
  
  .stat-number {
    font-size: var(--font-size-2xl);
  }
  
  section {
    padding: var(--space-16) 0;
  }
}

/* Print Styles */
@media print {
  .nav-toggle,
  .hero-visual,
  .btn {
    display: none;
  }
  
  .hero {
    padding: var(--space-8) 0;
  }
  
  section {
    padding: var(--space-8) 0;
  }
  
  .highlight-card,
  .timeline-item {
    break-inside: avoid;
  }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
  :root {
    --color-gray-600: var(--color-gray-800);
    --color-gray-500: var(--color-gray-700);
  }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  html {
    scroll-behavior: auto;
  }
/* Playful Elements for AI Cafe */
.playful-accent {
  position: relative;
}
/* Compact hero variant for subpages */
.hero.compact {
  padding: var(--space-12) 0 var(--space-8);
}

.playful-accent::after {
  content: none;
  position: absolute;
  top: -10px;
  right: -10px;
  font-size: 1.2em;
  animation: sparkle 2s infinite;
}

@keyframes sparkle {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.7; transform: scale(1.2); }
}

/* Fun hover effects for cards */
.highlight-card, .tool-card, .team-card {
  transition: all 0.3s ease-in-out;
}

.highlight-card:hover, .tool-card:hover, .team-card:hover {
  transform: translateY(-3px);
  transition: all 0.3s ease-in-out;
}

/* Playful button hover effects */
.btn-primary:hover {
  /* keep size stable on hover */
  transform: none;
  transition: all 0.2s ease-in-out;
}

.btn-secondary:hover {
  transform: none;
  transition: all 0.2s ease-in-out;
}

/* Fun animation for section titles */
.section-title {
  position: relative;
}

.section-title::before {
  content: "🤖";
  position: absolute;
  left: -30px;
  top: 50%;
  transform: translateY(-50%);
  opacity: 0;
  transition: all 0.3s ease-in-out;
}

.section-title:hover::before {
  opacity: 1;
  left: -40px;
}

/* Playful stat animations */
.stat-number {
  transition: all 0.3s ease-in-out;
}

.stat:hover .stat-number {
  transform: scale(1.1);
  color: var(--color-accent);
}

/* Fun loading animation for buttons */
.btn-loading {
  position: relative;
  overflow: hidden;
}

.btn-loading::after {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  animation: loading 1.5s infinite;
}

@keyframes loading {
  0% { left: -100%; }
  100% { left: 100%; }
}

/* Click ripple (fixes button growth on click) */
.ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(0,0,0,0.12);
  transform: scale(0);
  animation: ripple .6s linear;
  pointer-events: none;
}

@keyframes ripple {
  to { transform: scale(2); opacity: 0; }
}

/* Button Styles */
.btn-primary, .btn-secondary {
  display: inline-block;
  font-weight: var(--font-weight-medium);
  padding: 12px 24px;
  border-radius: var(--radius-lg);
  text-decoration: none;
  text-align: center;
  transition: all var(--transition-normal);
  min-width: 120px;
  border: 1px solid transparent;
  cursor: pointer;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: var(--color-bg);
  color: var(--color-text);
  border-color: var(--color-gray-300);
}

.btn-secondary:hover {
  background-color: var(--color-gray-100);
  border-color: var(--color-gray-400);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Playful footer elements */
.footer-title {
  position: relative;
}

.footer-title::after {
  content: "☕";
  margin-left: 10px;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
  40% { transform: translateY(-10px); }
  60% { transform: translateY(-5px); }
}

/* Fun hover effects for links */
.nav-link, .footer-links a, .card-link, .tool-link {
  position: relative;
}

.nav-link::after, .footer-links a::after, .card-link::after, .tool-link::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width 0.3s ease-in-out;
}

.nav-link:hover::after, .footer-links a:hover::after, .card-link:hover::after, .tool-link:hover::after {
  width: 100%;
}

/* Compact hero variant for subpages */
.hero.compact { padding: var(--space-12) 0 var(--space-8); }
.hero.compact .hero-title { font-size: var(--font-size-4xl); white-space: nowrap; }
.hero.compact .hero-description, .hero.compact .hero-subtitle { display: none; }

/* Playful brand text animation */
.brand-text {
  transition: all 0.3s ease-in-out;
}

.brand-link:hover .brand-text {
  transform: none;
  color: var(--color-accent);
}

/* Fun animation for hero title */
.hero-title {
  background: linear-gradient(45deg, var(--color-primary), var(--color-accent), var(--color-trane));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  background-size: 200% 200%;
  animation: gradientShift 3s ease-in-out infinite;
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
}