/**
 * Global Styles - Base, Buttons, Utilities
 * Portfolio Website by Amr Farag
 * Loaded on every page
 * 
 * NOTE: Header and Footer styles moved to header-footer.css
 */

/* ============================================
   RESET & BASE STYLES
   ============================================ */

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
body {
  font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--dark);
  color: var(--text-light);
  line-height: var(--leading-normal);
  overflow-x: hidden;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  color: var(--text);
  margin-bottom: var(--space-md);
}

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-3xl); }
h4 { font-size: var(--text-2xl); }
h5 { font-size: var(--text-xl); }
h6 { font-size: var(--text-lg); }

p {
  margin-bottom: var(--space-md);
  line-height: var(--leading-relaxed);
  color: var(--text-light);
}

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

a:hover {
  color: #0A0E27;
}

/* ============================================
   CONTAINER
   ============================================ */

.container {
  width: 100%;
  max-width: var(--container-2xl);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* ============================================
   SECTION UTILITIES
   ============================================ */

section {
  padding: var(--space-4xl) 0;
}

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

.section-badge {
  display: inline-block;
  background: rgba(255, 140, 0, 0.1);
  border: 1px solid var(--border-primary);
  color: var(--primary);
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-md);
}

.section-title {
  font-size: var(--text-5xl);
  font-weight: var(--font-extrabold);
  color: var(--text);
  margin-bottom: var(--space-lg);
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--text-gray);
  max-width: 600px;
  margin: 0 auto;
}

.section-icon {
  font-size: var(--text-5xl);
  margin-bottom: var(--space-md);
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-2xl);
  border-radius: var(--radius-full);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-base);
  border: 2px solid transparent;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-hover));
  color: var(--dark);
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 40px rgba(255, 140, 0, 0.4);
}

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

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

.btn-secondary {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text);
  border-color: var(--border);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: var(--primary);
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

/* Text Colors */
.text-primary { color: var(--primary) !important; }
.text-white { color: var(--text) !important; }
.text-gray { color: var(--text-gray) !important; }

/* Backgrounds */
.bg-dark { background: var(--dark) !important; }
.bg-dark-light { background: var(--dark-light) !important; }
.bg-primary { background: var(--primary) !important; }

/* Display */
.hidden { display: none !important; }
.block { display: block !important; }
.flex { display: flex !important; }
.grid { display: grid !important; }

/* Flexbox Utilities */
.justify-center { justify-content: center !important; }
.justify-between { justify-content: space-between !important; }
.items-center { align-items: center !important; }
.gap-sm { gap: var(--space-sm) !important; }
.gap-md { gap: var(--space-md) !important; }
.gap-lg { gap: var(--space-lg) !important; }

/* Spacing */
.mt-sm { margin-top: var(--space-sm) !important; }
.mt-md { margin-top: var(--space-md) !important; }
.mt-lg { margin-top: var(--space-lg) !important; }
.mb-sm { margin-bottom: var(--space-sm) !important; }
.mb-md { margin-bottom: var(--space-md) !important; }
.mb-lg { margin-bottom: var(--space-lg) !important; }

/* Text Alignment */
.text-center { text-align: center !important; }
.text-left { text-align: left !important; }
.text-right { text-align: right !important; }

/* ============================================
   ANIMATIONS
   ============================================ */

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

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

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

.slide-down {
  animation: slideDown 0.4s ease;
}

/* ============================================
   LOADING SPINNER
   ============================================ */

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid rgba(255, 140, 0, 0.2);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* ============================================
   RESPONSIVE UTILITIES
   ============================================ */

/* Padding adjustments for mobile */
@media (max-width: 640px) {
  .container {
    padding: 0 var(--space-md);
  }
  
  section {
    padding: var(--space-3xl) 0;
  }
  
  h1 { font-size: var(--text-4xl); }
  h2 { font-size: var(--text-3xl); }
  h3 { font-size: var(--text-2xl); }
  
  .section-title {
    font-size: var(--text-3xl);
  }
}