/*-----------------------------------*\
  #MAIN.CSS - Modern Design System
\*-----------------------------------*/

/**
 * Custom Properties
 */

:root {
  /* Colors */
  --color-bg-primary: #1a1a1a;
  --color-bg-secondary: #2d2d2d;
  --color-bg-tertiary: #3a3a3a;
  --color-accent-primary: #00d4ff;
  --color-accent-secondary: #0099cc;
  --color-accent-highlight: #ffd700;
  --color-text-primary: #ffffff;
  --color-text-secondary: #e0e0e0;
  --color-text-muted: #b0b0b0;
  --color-border: #404040;
  
  /* Typography */
  --font-family: 'Poppins', sans-serif;
  --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: 2rem;
  --font-size-4xl: 2.5rem;
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  
  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 16px 32px rgba(0, 0, 0, 0.5);
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Layout */
  --container-max-width: 1200px;
  --header-height: 70px;
}

/*-----------------------------------*\
  #RESET
\*-----------------------------------*/

*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: 1.6;
  color: var(--color-text-secondary);
  background-color: var(--color-bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition-base);
}

ul, ol {
  list-style: none;
}

button {
  font: inherit;
  border: none;
  background: none;
  cursor: pointer;
}

input,
textarea,
select {
  font: inherit;
  border: none;
  outline: none;
}

/*-----------------------------------*\
  #TYPOGRAPHY
\*-----------------------------------*/

h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-semibold);
  line-height: 1.2;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-md);
}

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

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(--spacing-md);
  color: var(--color-text-secondary);
}

/*-----------------------------------*\
  #UTILITIES
\*-----------------------------------*/

.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-2xl) 0;
}

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

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

.gradient-text {
  background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/*-----------------------------------*\
  #BUTTONS
\*-----------------------------------*/

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-md);
  transition: var(--transition-base);
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary));
  color: var(--color-text-primary);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-bg-tertiary);
  border-color: var(--color-accent-primary);
}

.btn-outline {
  background: transparent;
  color: var(--color-accent-primary);
  border: 2px solid var(--color-accent-primary);
}

.btn-outline:hover {
  background: var(--color-accent-primary);
  color: var(--color-text-primary);
}

/*-----------------------------------*\
  #CARDS
\*-----------------------------------*/

.card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-md);
  transition: var(--transition-base);
}

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

.card-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
}

.card-content {
  color: var(--color-text-secondary);
}

/*-----------------------------------*\
  #HERO SECTION
\*-----------------------------------*/

.hero {
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: var(--gradient-hero, linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(0, 153, 204, 0.1)));
  position: relative;
  overflow: hidden;
  padding: var(--spacing-2xl) 0;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-hero-radial, radial-gradient(circle at 50% 50%, rgba(0, 212, 255, 0.1), transparent 70%));
  pointer-events: none;
}

/* Page Header Gradient */
.page-header-gradient {
  background: var(--gradient-hero, linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(0, 153, 204, 0.1))) !important;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  margin-bottom: var(--spacing-md);
  animation: fadeInUp 0.8s ease;
}

.hero-subtitle {
  font-size: clamp(1.125rem, 2vw, 1.5rem);
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-lg);
  animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-description {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease 0.6s both;
}

/*-----------------------------------*\
  #ANIMATIONS
\*-----------------------------------*/

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.fade-in {
  animation: fadeIn 0.6s ease;
}

.fade-in-up {
  animation: fadeInUp 0.8s ease;
}

/*-----------------------------------*\
  #GRID LAYOUTS
\*-----------------------------------*/

.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/*-----------------------------------*\
  #TIMELINE
\*-----------------------------------*/

.timeline {
  position: relative;
  padding-left: var(--spacing-xl);
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}

.timeline-item {
  position: relative;
  margin-bottom: var(--spacing-xl);
  padding-left: var(--spacing-lg);
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -6px;
  top: 0;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-accent-primary);
  border: 3px solid var(--color-bg-primary);
  box-shadow: 0 0 0 2px var(--color-accent-primary);
}

.timeline-item-title {
  font-size: var(--font-size-xl);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-xs);
}

.timeline-item-meta {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-sm);
}

.timeline-item-content {
  color: var(--color-text-secondary);
}

/*-----------------------------------*\
  #FORM ELEMENTS
\*-----------------------------------*/

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

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

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-size: var(--font-size-base);
  transition: var(--transition-base);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-accent-primary);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
}

.form-input.error,
.form-textarea.error {
  border-color: #ff4444;
  box-shadow: 0 0 0 3px rgba(255, 68, 68, 0.1);
}

/*-----------------------------------*\
  #SOCIAL LINKS
\*-----------------------------------*/

.social-links {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  font-size: var(--font-size-xl);
  transition: var(--transition-base);
}

.social-link:hover {
  background: var(--color-accent-primary);
  color: var(--color-text-primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

/*-----------------------------------*\
  #FOOTER
\*-----------------------------------*/

.footer {
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-xl) 0;
  margin-top: var(--spacing-2xl);
  text-align: center;
}

.footer-content {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

/*-----------------------------------*\
  #RESPONSIVE
\*-----------------------------------*/

@media (max-width: 768px) {
  :root {
    --spacing-2xl: 3rem;
    --spacing-xl: 2rem;
  }
  
  .hero {
    min-height: 70vh;
  }
  
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  
  .btn {
    width: 100%;
  }
  
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}