/* ==========================================
   Glipearte - Modern CSS with 3D Effects
   Author: AI Web Development Assistant
   ========================================== */

/* ==========================================
   CSS Variables & Root Configuration
   ========================================== */
:root {
  /* Colors */
  --primary-color: #ff6b6b;
  --primary-dark: #ff5252;
  --primary-light: #ff8a80;
  --secondary-color: #4ecdc4;
  --secondary-dark: #26a69a;
  --accent-color: #ffe66d;
  --accent-dark: #ffd54f;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  --gradient-secondary: linear-gradient(135deg, var(--secondary-color), var(--secondary-dark));
  --gradient-accent: linear-gradient(135deg, var(--accent-color), var(--accent-dark));
  --gradient-gold: linear-gradient(135deg, #ffd700, #ffed4e);
  --gradient-silver: linear-gradient(135deg, #c0c0c0, #e8e8e8);
  --gradient-rose: linear-gradient(135deg, #ff6b6b, #ff8a80);
  --gradient-ocean: linear-gradient(135deg, #4ecdc4, #26a69a);
  --gradient-sunset: linear-gradient(135deg, #ff9a9e, #fecfef);
  --gradient-forest: linear-gradient(135deg, #56ab2f, #a8e6cf);
  --gradient-night: linear-gradient(135deg, #2c3e50, #34495e);
  
  /* 3D Colors */
  --color-3d-base: #ff6b6b;
  --color-3d-highlight: #ff8a80;
  --color-3d-shadow: #ff5252;
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Playfair Display', Georgia, serif;
  --font-mono: 'SF Mono', Monaco, monospace;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
  --shadow-2xl: 0 25px 50px rgba(0, 0, 0, 0.25);
  --shadow-3d: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-neon: 0 0 20px rgba(255, 107, 107, 0.5);
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  --transition-bounce: 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  --transition-elastic: 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  
  /* 3D Effects */
  --perspective: 1000px;
  --rotate-x: 0deg;
  --rotate-y: 0deg;
  --rotate-z: 0deg;
  --transform-3d: perspective(var(--perspective)) rotateX(var(--rotate-x)) rotateY(var(--rotate-y)) rotateZ(var(--rotate-z));
  
  /* Glass Effect */
  --glass-bg: rgba(255, 255, 255, 0.1);
  --glass-border: rgba(255, 255, 255, 0.2);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  --glass-blur: blur(20px);
  
  /* Particles */
  --particle-count: 50;
  --particle-size: 4px;
  --particle-speed: 20s;
}

/* ==========================================
   Reset & Base Styles
   ========================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-primary);
  font-weight: 400;
  line-height: 1.6;
  color: #333;
  background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
  overflow-x: hidden;
  position: relative;
}

/* Selection */
::selection {
  background: var(--primary-color);
  color: white;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
  background: var(--primary-color);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-dark);
}

/* ==========================================
   Typography
   ========================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: 3.5rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 4px 8px rgba(255, 107, 107, 0.3);
}

h2 {
  font-size: 2.5rem;
  background: var(--gradient-secondary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

h3 {
  font-size: 1.8rem;
  color: var(--primary-dark);
}

p {
  margin-bottom: var(--spacing-md);
  color: #fff;
}

/* Gradient Text */
.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  background-size: 200% 200%;
  animation: gradient-shift 3s ease infinite;
}

@keyframes gradient-shift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

/* ==========================================
   Loading Screen
   ========================================== */
.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-night);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loading-screen.hidden {
  opacity: 0;
  visibility: hidden;
}

.loading-content {
  text-align: center;
  color: white;
}

.loading-logo {
  margin-bottom: var(--spacing-xl);
}

.logo-3d-container {
  perspective: 300px;
  display: inline-block;
}

.logo-3d {
  position: relative;
  width: 80px;
  height: 80px;
  transform-style: preserve-3d;
  animation: logo-rotate 3s linear infinite;
}

.logo-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--primary-color);
  text-shadow: 0 0 20px rgba(255, 107, 107, 0.8);
}

.logo-particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: var(--gradient-primary);
  opacity: 0.3;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes logo-rotate {
  0% { transform: rotateY(0deg) rotateX(10deg); }
  100% { transform: rotateY(360deg) rotateX(10deg); }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 0.3; }
  50% { transform: scale(1.2); opacity: 0.1; }
}

.loading-text h3 {
  margin-bottom: var(--spacing-lg);
  font-size: 1.2rem;
  font-weight: 300;
  opacity: 0.9;
}

.loading-bar {
  width: 200px;
  height: 4px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 2px;
  overflow: hidden;
  margin: 0 auto;
}

.loading-progress {
  height: 100%;
  background: var(--gradient-primary);
  border-radius: 2px;
  animation: loading-progress 2s ease-in-out infinite;
}

@keyframes loading-progress {
  0% { width: 0%; }
  50% { width: 100%; }
  100% { width: 0%; }
}

/* ==========================================
   3D Background
   ========================================== */
.threejs-background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  opacity: 0.1;
}

/* ==========================================
   Navigation
   ========================================== */
#mainNav {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--glass-border);
  transition: all var(--transition-normal);
  z-index: 1000;
}

#mainNav.scrolled {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: var(--shadow-lg);
}

.navbar-brand {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--primary-color) !important;
  text-decoration: none;
  position: relative;
}

.brand-3d {
  position: relative;
  display: inline-block;
  transform-style: preserve-3d;
}

.brand-text {
  position: relative;
  z-index: 2;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 2px 4px rgba(255, 107, 107, 0.3);
}

.brand-glow {
  position: absolute;
  top: -5px;
  left: -5px;
  right: -5px;
  bottom: -5px;
  background: var(--gradient-primary);
  filter: blur(10px);
  opacity: 0;
  z-index: 1;
  animation: brand-glow 3s ease-in-out infinite;
}

@keyframes brand-glow {
  0%, 100% { opacity: 0; }
  50% { opacity: 0.7; }
}

.navbar-nav .nav-link {
  position: relative;
  padding: var(--spacing-sm) var(--spacing-md);
  font-weight: 500;
  color: #333 !important;
  transition: all var(--transition-normal);
  overflow: hidden;
}

.nav-text {
  position: relative;
  z-index: 2;
}

.nav-hover-effect {
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--gradient-primary);
  opacity: 0;
  transition: all var(--transition-normal);
  z-index: 1;
}

.navbar-nav .nav-link:hover .nav-hover-effect {
  left: 0;
  opacity: 0.1;
}

.navbar-nav .nav-link:hover {
  color: var(--primary-color) !important;
  transform: translateY(-2px);
}

.navbar-toggler {
  border: none;
  background: var(--gradient-primary);
  color: white;
  border-radius: 8px;
  padding: var(--spacing-sm);
  transition: all var(--transition-normal);
}

.navbar-toggler:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-neon);
}

/* ==========================================
   Hero Section
   ========================================== */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-primary);
  opacity: 0.1;
  z-index: 1;
}

.hero-particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    radial-gradient(circle at 20% 80%, rgba(255, 107, 107, 0.3) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(78, 205, 196, 0.3) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, rgba(255, 230, 109, 0.3) 0%, transparent 50%);
  animation: particle-float 20s ease-in-out infinite;
}

@keyframes particle-float {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(180deg); }
}

.hero-content {
  position: relative;
  z-index: 10;
  color: white;
  text-align: left;
}

.hero-badge {
  margin-bottom: var(--spacing-lg);
}

.badge-3d {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: 25px;
  font-size: 0.9rem;
  font-weight: 500;
  color: white;
  box-shadow: var(--glass-shadow);
  transform: perspective(500px) rotateX(15deg);
  transition: all var(--transition-normal);
}

.badge-3d:hover {
  transform: perspective(500px) rotateX(0deg) translateY(-5px);
  box-shadow: var(--shadow-xl);
}

.hero-title {
  font-size: 4rem;
  font-weight: 800;
  margin-bottom: var(--spacing-xl);
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.title-line {
  display: block;
  opacity: 0;
  transform: translateY(50px);
  animation: title-reveal 1s ease forwards;
}

.title-line:nth-child(2) {
  animation-delay: 0.3s;
}

.title-line:nth-child(3) {
  animation-delay: 0.6s;
}

@keyframes title-reveal {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-description {
  font-size: 1.2rem;
  margin-bottom: var(--spacing-2xl);
  opacity: 0.9;
  max-width: 500px;
}

.hero-actions {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-3xl);
}

.btn-3d {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  border: none;
  border-radius: 50px;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-normal);
  transform-style: preserve-3d;
  overflow: hidden;
}

.btn-primary.btn-3d {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 8px 25px rgba(255, 107, 107, 0.4);
}

.btn-primary.btn-3d:hover {
  transform: translateY(-3px) rotateX(-10deg);
  box-shadow: 0 12px 35px rgba(255, 107, 107, 0.6);
}

.btn-outline.btn-3d {
  background: transparent;
  color: white;
  border: 2px solid white;
}

.btn-outline.btn-3d:hover {
  background: white;
  color: var(--primary-color);
  transform: translateY(-3px);
}

.btn-text {
  position: relative;
  z-index: 2;
}

.btn-icon {
  font-size: 1.2rem;
  transition: transform var(--transition-normal);
}

.btn-3d:hover .btn-icon {
  transform: translateX(5px);
}

.btn-particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.3) 0%, transparent 70%);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.btn-3d:hover .btn-particles {
  opacity: 1;
}

.btn-glow {
  animation: btn-glow 2s ease-in-out infinite;
}

@keyframes btn-glow {
  0%, 100% { box-shadow: 0 8px 25px rgba(255, 107, 107, 0.4); }
  50% { box-shadow: 0 12px 35px rgba(255, 107, 107, 0.8); }
}

.hero-stats {
  display: flex;
  gap: var(--spacing-2xl);
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: white;
  margin-bottom: var(--spacing-xs);
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.8;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.hero-visual {
  position: relative;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.floating-elements {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.float-element {
  position: absolute;
  width: 60px;
  height: 60px;
  background: var(--gradient-accent);
  border-radius: 50%;
  opacity: 0.3;
  animation: float 6s ease-in-out infinite;
}

.float-element.element-1 {
  top: 20%;
  left: 10%;
  animation-delay: 0s;
}

.float-element.element-2 {
  top: 60%;
  right: 15%;
  animation-delay: 2s;
}

.float-element.element-3 {
  bottom: 20%;
  left: 20%;
  animation-delay: 4s;
}

@keyframes float {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(180deg); }
}

.hero-image-container {
  position: relative;
  z-index: 2;
  perspective: 1000px;
}

.hero-image-3d {
  position: relative;
  transform-style: preserve-3d;
  animation: hero-image-float 4s ease-in-out infinite;
}

@keyframes hero-image-float {
  0%, 100% { transform: translateY(0px) rotateY(0deg); }
  50% { transform: translateY(-10px) rotateY(5deg); }
}

.hero-image {
  width: 100%;
  max-width: 500px;
  height: auto;
  border-radius: 20px;
  box-shadow: var(--shadow-2xl);
  transform: rotateY(-15deg) rotateX(5deg);
}

.image-glow {
  position: absolute;
  top: -20px;
  left: -20px;
  right: -20px;
  bottom: -20px;
  background: var(--gradient-primary);
  filter: blur(40px);
  opacity: 0.3;
  z-index: -1;
  border-radius: 30px;
  animation: image-glow 3s ease-in-out infinite;
}

@keyframes image-glow {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 0.6; }
}

.scroll-indicator {
  position: absolute;
  bottom: var(--spacing-xl);
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  color: white;
  opacity: 0.7;
  animation: scroll-bounce 2s infinite;
}

.scroll-text {
  font-size: 0.9rem;
  margin-bottom: var(--spacing-sm);
}

.scroll-arrow {
  width: 20px;
  height: 20px;
  border-right: 2px solid white;
  border-bottom: 2px solid white;
  transform: rotate(45deg);
  margin: 0 auto;
}

@keyframes scroll-bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(10px); }
}

/* ==========================================
   Section Headers
   ========================================== */
.section-header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.section-title {
  font-size: 3rem;
  margin-bottom: var(--spacing-lg);
}

.section-description {
  font-size: 1.2rem;
  color: #666;
  max-width: 600px;
  margin: 0 auto;
}

/* ==========================================
   Gallery Section
   ========================================== */
.gallery-section {
  padding: var(--spacing-4xl) 0;
  background: white;
}

.gallery-container {
  position: relative;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-2xl);
}

.gallery-item {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  transform-style: preserve-3d;
  transition: all var(--transition-normal);
  cursor: pointer;
}

.gallery-item:hover {
  transform: translateY(-10px) rotateX(5deg);
  box-shadow: var(--shadow-2xl);
}

.gallery-item-image {
  width: 100%;
  height: 250px;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.gallery-item:hover .gallery-item-image {
  transform: scale(1.1);
}

.gallery-item-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-normal);
  display: flex;
  align-items: center;
  justify-content: center;
}

.gallery-item:hover .gallery-item-overlay {
  opacity: 0.9;
}

.gallery-item-content {
  text-align: center;
  color: white;
  transform: translateY(20px);
  transition: transform var(--transition-normal);
}

.gallery-item:hover .gallery-item-content {
  transform: translateY(0);
}

.gallery-item-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.gallery-item-description {
  opacity: 0.9;
}

/* ==========================================
   Responsive Design
   ========================================== */
@media (max-width: 768px) {
  .hero-title {
    font-size: 2.5rem;
  }
  
  .hero-actions {
    flex-direction: column;
    align-items: center;
  }
  
  .hero-stats {
    flex-direction: column;
    gap: var(--spacing-lg);
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .gallery-grid {
    grid-template-columns: 1fr;
  }
  
  .kits-container .row {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2rem;
  }
  
  .section-title {
    font-size: 1.8rem;
  }
  
  .btn-3d {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.9rem;
  }
}