/* CSS Variables */
:root {
  /* Color Palette - Skillhorizon Gaming Theme */
  --primary-color: #6366f1;
  --secondary-color: #8b5cf6;
  --accent-color: #f59e0b;
  --background-color: #f8fafc;
  --text-color: #1e293b;
  --light-text: #64748b;
  --white: #ffffff;
  --shadow: rgba(99, 102, 241, 0.1);
  --border-color: #e2e8f0;

  /* Typography */
  --font-primary: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  --font-heading: "Georgia", serif;

  /* Spacing */
  --section-padding: 4rem 0;
  --container-padding: 0 1rem;
  --border-radius: 12px;

  /* Transitions */
  --transition-fast: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Breakpoints */
  --mobile: 360px;
  --tablet: 768px;
  --desktop: 1280px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--background-color);
  overflow-x: hidden;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 1rem;
}

h1 {
  font-size: 2.5rem;
}
h2 {
  font-size: 2rem;
}
h3 {
  font-size: 1.5rem;
}
h4 {
  font-size: 1.25rem;
}

p {
  margin-bottom: 1rem;
  color: var(--light-text);
}

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

a:hover {
  color: var(--secondary-color);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background: var(--primary-color);
  color: var(--white);
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: var(--transition-fast);
  font-weight: 500;
  text-align: center;
}

.btn:hover {
  background: var(--secondary-color);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--shadow);
}

.btn-secondary {
  background: var(--accent-color);
  color: var(--text-color);
}

.btn-secondary:hover {
  background: #ffed4e;
}

/* Container */
.container {
  max-width: var(--desktop);
  margin: 0 auto;
  padding: var(--container-padding);
}

/* Sections */
section {
  padding: var(--section-padding);
}

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

.mb-1 {
  margin-bottom: 0.5rem;
}
.mb-2 {
  margin-bottom: 1rem;
}
.mb-3 {
  margin-bottom: 1.5rem;
}
.mb-4 {
  margin-bottom: 2rem;
}

.mt-1 {
  margin-top: 0.5rem;
}
.mt-2 {
  margin-top: 1rem;
}
.mt-3 {
  margin-top: 1.5rem;
}
.mt-4 {
  margin-top: 2rem;
}

/* Responsive Design */
@media (max-width: 768px) {
  :root {
    --section-padding: 2rem 0;
    --container-padding: 0 0.75rem;
  }

  h1 {
    font-size: 2rem;
  }
  h2 {
    font-size: 1.75rem;
  }
  h3 {
    font-size: 1.25rem;
  }
}

@media (max-width: 360px) {
  :root {
    --section-padding: 1.5rem 0;
    --container-padding: 0 0.5rem;
  }

  h1 {
    font-size: 1.75rem;
  }
  h2 {
    font-size: 1.5rem;
  }
  h3 {
    font-size: 1.125rem;
  }
}

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

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

.fade-in-up {
  animation: fadeInUp 0.6s ease-out;
}

.slide-in-left {
  animation: slideInLeft 0.6s ease-out;
}

.slide-in-right {
  animation: slideInRight 0.6s ease-out;
}

/* Loading States */
.loading {
  opacity: 0.6;
  pointer-events: none;
}

/* Focus States */
.btn:focus,
a:focus {
  outline: 2px solid var(--accent-color);
  outline-offset: 2px;
}