/* Essentials Creative Design System v2.0 */
/* Unified CSS Variables and Components */

:root {
  /* Core Colors */
  --color-primary: #1a1a1a;
  --color-primary-hover: #333;
  --color-secondary: #333333;
  --color-accent: #1a1a1a;
  --color-text-dark: #1a1a1a;
  --color-text-medium: #333;
  --color-text-light: #666;
  --color-text-lighter: #999;
  --color-background: #ffffff;
  --color-background-light: #f8f8f8;
  --color-background-gray: #f0f0f0;
  --color-border: #ddd;
  --color-border-light: #e5e5e5;
  
  /* Typography Scale */
  --font-family: 'Apercu', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-hero-title: clamp(2.5rem, 5vw, 3.5rem);
  --font-size-hero-subtitle: clamp(1.1rem, 2vw, 1.3rem);
  --font-size-section-title: clamp(2rem, 4vw, 3rem);
  --font-size-heading: 1.5rem;
  --font-size-subheading: 1.25rem;
  --font-size-body: 1rem;
  --font-size-small: 0.9rem;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;
  
  /* Spacing System */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 5rem;
  --spacing-section: 4rem 2rem;
  --spacing-section-mobile: 3rem 1rem;
  
  /* Layout */
  --max-width-container: 1200px;
  --max-width-content: 800px;
  --max-width-narrow: 600px;
  --hero-height: 60vh;
  --hero-min-height: 400px;
  --hero-height-compact: 45vh;
  --hero-min-height-compact: 300px;
  
  /* Components */
  --border-radius-sm: 6px;
  --border-radius-md: 8px;
  --border-radius-lg: 12px;
  --border-radius-xl: 16px;
  --border-radius-full: 50px;
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
  
  /* Button Styles */
  --btn-padding-sm: 0.75rem 1.5rem;
  --btn-padding-md: 1rem 2rem;
  --btn-padding-lg: 1.25rem 2.5rem;
  --btn-font-size: 1rem;
  --btn-font-size-lg: 1.125rem;
  
  /* Grid and Gaps */
  --grid-gap-sm: 1rem;
  --grid-gap-md: 1.5rem;
  --grid-gap-lg: 2rem;
  --grid-gap-xl: 2.5rem;
}

/* Component Classes */

/* Buttons - Unified Styles */
.btn {
  display: inline-block;
  font-family: var(--font-family);
  font-weight: var(--font-weight-semibold);
  text-decoration: none;
  border-radius: var(--border-radius-md);
  transition: all var(--transition-base);
  cursor: pointer;
  border: none;
  text-align: center;
}

.btn-primary {
  background: var(--color-primary);
  color: white;
  padding: var(--btn-padding-lg);
  font-size: var(--btn-font-size-lg);
  box-shadow: 0 4px 12px rgba(26, 26, 26, 0.15);
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(26, 26, 26, 0.2);
}

.btn-secondary {
  background: transparent;
  color: var(--color-primary);
  padding: var(--btn-padding-lg);
  font-size: var(--btn-font-size-lg);
  border: 2px solid var(--color-primary);
}

.btn-secondary:hover {
  background: var(--color-primary);
  color: white;
  transform: translateY(-2px);
}

.btn-white {
  background: white;
  color: var(--color-primary);
  padding: var(--btn-padding-lg);
  font-size: var(--btn-font-size-lg);
  box-shadow: 0 4px 12px rgba(255, 255, 255, 0.2);
}

.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 255, 255, 0.3);
}

.btn-small {
  padding: var(--btn-padding-sm);
  font-size: var(--btn-font-size);
}

/* Hero Sections */
.hero {
  position: relative;
  height: var(--hero-height);
  min-height: var(--hero-min-height);
  display: flex;
  align-items: center;
  justify-content: center;
  background-size: cover;
  background-position: center;
  overflow: hidden;
}

.hero-compact {
  height: var(--hero-height-compact);
  min-height: var(--hero-min-height-compact);
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.5) 40%, rgba(0,0,0,0.8) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: white;
  max-width: var(--max-width-content);
  padding: var(--spacing-lg);
}

.hero-title {
  font-size: var(--font-size-hero-title);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-sm);
  text-shadow: 2px 2px 4px rgba(0,0,0,0.8);
  line-height: 1.2;
}

.hero-subtitle {
  font-size: var(--font-size-hero-subtitle);
  margin-bottom: var(--spacing-md);
  text-shadow: 1px 1px 3px rgba(0,0,0,0.8);
  line-height: 1.5;
}

/* Sections */
.section {
  padding: var(--spacing-section);
  max-width: var(--max-width-container);
  margin: 0 auto;
}

.section-title {
  font-size: var(--font-size-section-title);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-dark);
  margin-bottom: var(--spacing-md);
  text-align: center;
}

.section-subtitle {
  font-size: var(--font-size-subheading);
  color: var(--color-text-light);
  line-height: 1.6;
  text-align: center;
  max-width: var(--max-width-content);
  margin: 0 auto var(--spacing-xl);
}

/* Grid Systems */
.grid {
  display: grid;
  gap: var(--grid-gap-lg);
}

.grid-cols-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-cols-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-cols-4 {
  grid-template-columns: repeat(4, 1fr);
}

.grid-auto {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

/* Cards */
.card {
  background: white;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.card-content {
  padding: var(--spacing-md);
}

/* Forms */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-medium);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--spacing-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  font-family: var(--font-family);
  font-size: var(--font-size-body);
  transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(26, 26, 26, 0.1);
}

/* Video Components */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--grid-gap-lg);
  margin-bottom: var(--spacing-xl);
}

.video-item {
  background: white;
  border-radius: var(--border-radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  position: relative;
}

.video-item:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--shadow-xl);
  z-index: 10;
}

.video-wrapper {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  background: var(--color-background-gray);
}

.video-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.p-sm { padding: var(--spacing-sm); }
.p-md { padding: var(--spacing-md); }
.p-lg { padding: var(--spacing-lg); }
.p-xl { padding: var(--spacing-xl); }

/* Responsive Design */
@media (max-width: 1024px) {
  .grid-cols-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .grid-cols-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  :root {
    --hero-height: 50vh;
    --hero-min-height: 350px;
  }
  
  .section {
    padding: var(--spacing-section-mobile);
  }
  
  .grid-cols-2,
  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: 1fr;
  }
  
  .video-grid {
    grid-template-columns: 1fr;
    gap: var(--grid-gap-md);
  }
  
  .hero-title {
    font-size: clamp(2rem, 6vw, 2.5rem);
  }
  
  .section-title {
    font-size: clamp(1.75rem, 5vw, 2.5rem);
  }
}

@media (max-width: 480px) {
  .btn-primary,
  .btn-secondary,
  .btn-white {
    padding: var(--btn-padding-md);
    font-size: var(--btn-font-size);
  }
}

/* Animation Classes */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fadeIn {
  animation: fadeIn 0.6s ease-out;
}

.animate-slideUp {
  animation: slideUp 0.6s ease-out;
}

/* Staggered Animation Delays */
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }
.delay-5 { animation-delay: 0.5s; }
.delay-6 { animation-delay: 0.6s; }

/* Logo Standardization */
.logo img {
  height: 45px;
  width: auto;
  display: block;
}