/**
 * Modern Custom Styles
 * Using CSS Custom Properties (Variables) for better maintainability
 */

:root {
  /* Color Palette */
  --color-primary: #017cad;
  --color-primary-dark: #0056b3;
  --color-text-primary: #333;
  --color-text-secondary: #707070;
  --color-border: #d1d1d1;
  --color-background: #f4f4f4;
  --color-white: #ffffff;
  
  /* Spacing */
  --spacing-xs: 0.25em;
  --spacing-sm: 0.5em;
  --spacing-md: 0.75em;
  --spacing-lg: 1.5em;
  --spacing-xl: 2em;
  
  /* Typography */
  --font-size-base: 1em;
  --font-size-lg: 1.5em;
  --font-size-xl: 2.25em;
  --font-size-mobile-lg: 2em;
  --font-size-mobile-xl: 2.6em;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-medium: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Layout */
  --nav-height: 3.8em;
  --border-radius: 4px;
  --outline-width: 2px;
}

/* Smooth scrolling for modern browsers */
html {
  scroll-behavior: smooth;
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  
  html {
    scroll-behavior: auto;
  }
}

/* ========================================
   Navigation Styles
   ======================================== */

#nav {
  height: var(--nav-height) !important;
}

#nav a {
  font-size: var(--font-size-xl) !important;
  color: rgba(255, 255, 255, 0.75) !important;
  transition: all var(--transition-medium);
}

#nav a:hover {
  color: rgba(255, 255, 255, 1) !important;
}

#nav a.active {
  color: rgba(255, 255, 255, 1) !important;
}

/* ========================================
   Icon Styles
   ======================================== */

a.icon {
  color: var(--color-primary);
}

ul.icons {
  cursor: default;
  list-style: none;
  padding-left: 0;
}

ul.icons li {
  display: inline-block;
  padding: 0 var(--spacing-sm) 0 0;
}

ul.icons li .icon::before {
  font-size: var(--font-size-lg);
}

ul.icons li a {
  display: inline-block;
  padding: var(--spacing-sm);
  transition: transform var(--transition-fast), color var(--transition-fast);
}

ul.icons li a:hover {
  color: var(--color-primary-dark);
  transform: scale(1.1);
}

/* ========================================
   Link Styles
   ======================================== */

a {
  transition: all var(--transition-medium);
}

a:hover {
  transform: translateY(-2px);
}

/* Prevent the profile image from moving on hover */
a.jumplink.pic,
a.jumplink.pic:hover {
  transform: none;
}

.about-link {
  color: var(--color-primary);
  font-weight: normal;
  display: inline-block;
  padding: var(--spacing-sm) 0;
  transition: color var(--transition-medium), transform var(--transition-medium);
  text-decoration: none;
}

.about-link:hover {
  color: var(--color-primary-dark);
  transform: translateX(5px);
}

.no-underline {
  text-decoration: none;
}

/* ========================================
   Typography
   ======================================== */

.about-txt {
  font-weight: normal;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.article-icon {
  padding-right: var(--spacing-md);
}

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

/* Reduce heading sizes on portfolio and handles pages only (not index) */
body:not(.is-preload) #main > .panel:not(.intro) h1 {
  font-size: 1.75em;
}

body:not(.is-preload) #main > .panel:not(.intro) h2 {
  font-size: 1.35em;
}

body:not(.is-preload) #main > .panel:not(.intro) h3 {
  font-size: 1.15em;
}

body:not(.is-preload) #main > .panel:not(.intro) h4 {
  font-size: 1em;
}

/* ========================================
   Resume iframe
   ======================================== */

#resume_preview {
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  text-align: center;
  min-height: 600px;
  width: 100%;
  transition: opacity var(--transition-medium);
}

#resume_preview:not([src]),
#resume_preview[src=""] {
  opacity: 0.5;
  background: var(--color-background);
}

/* ========================================
   Image Optimization
   ======================================== */

img {
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
  max-width: 100%;
  height: auto;
}

/* ========================================
   Accessibility
   ======================================== */

a:focus,
button:focus,
input:focus,
textarea:focus {
  outline: var(--outline-width) solid var(--color-primary);
  outline-offset: var(--outline-width);
}

/* Screen reader only content */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Skip to main content link for screen readers */
.skip-to-main {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-sm) var(--spacing-md);
  text-decoration: none;
  z-index: 100;
}

.skip-to-main:focus {
  top: 0;
}

/* ========================================
   Responsive Design - Tablet
   ======================================== */

@media screen and (max-width: 980px) {
  #resume_preview {
    height: 500px;
    min-height: 500px;
  }
}

/* ========================================
   Responsive Design - Mobile
   ======================================== */

@media screen and (max-width: 736px) {
  /* Navigation adjustments */
  #nav a {
    font-size: var(--font-size-mobile-xl) !important;
    margin: 0 0.35em;
  }
  
  /* Make the triangle indicator slightly bigger on mobile */
  #nav a::after {
    border-left: solid 0.6em transparent !important;
    border-right: solid 0.6em transparent !important;
    margin-left: -0.6em !important;
  }
  
  #nav a.active::after {
    border-bottom-width: 0.6em !important;
  }
  
  /* Icon adjustments */
  ul.icons li {
    padding: 0 var(--spacing-sm);
  }
  
  ul.icons li .icon::before {
    font-size: var(--font-size-mobile-lg);
  }
  
  /* Form improvements */
  form input[type="text"],
  form input[type="email"],
  form textarea {
    font-size: 16px !important; /* Prevents zoom on iOS */
    padding: 0.75em;
  }
  
  form input[type="submit"] {
    padding: 0.75em var(--spacing-lg);
    font-size: 1.1em;
  }
  
  /* Resume iframe */
  #resume_preview {
    height: 400px;
    min-height: 400px;
  }
  
  /* Intro section spacing */
  #main > .panel.intro header {
    padding: var(--spacing-xl) var(--spacing-lg) !important;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }
  
  #main > .panel.intro header h1 {
    font-size: 1.8em !important;
    margin-bottom: var(--spacing-sm);
  }
  
  #main > .panel.intro header p {
    font-size: 1.05em !important;
    line-height: 1.5em;
    margin-bottom: var(--spacing-sm);
  }
  
  #main > .panel.intro header p:last-of-type {
    margin-bottom: var(--spacing-xl) !important;
  }
  
  #main > .panel.intro header br {
    display: none;
  }
  
  #main > .panel.intro header ul.icons {
    margin-top: auto;
    margin-bottom: auto;
  }
}

/* ========================================
   Print Styles
   ======================================== */

@media print {
  #nav,
  #footer,
  form {
    display: none;
  }
  
  a {
    text-decoration: underline;
  }
  
  a[href]::after {
    content: " (" attr(href) ")";
  }
}