/* ============================================
   RETRO PORTFOLIO - CSS STYLING
   Theme: Classic Terminal (Phosphor Green)
   ============================================ */

/* ============================================
   CSS CUSTOM PROPERTIES (VARIABLES)
   ============================================ */
:root {
  /* Color Palette - Softer Amber Terminal Theme 
     WCAG AA Accessibility Compliant:
     - Softer amber tones that are easier on the eyes
     - All text/background combinations meet WCAG AA standards
  */
  --color-bg-primary: #0a0a0a;
  --color-bg-secondary: #1a1a1a;
  --color-text-primary: #d4a574;
  --color-text-secondary: #e8b887;
  --color-accent: #e8b887;
  --color-glow: rgba(212, 165, 116, 0.4);
  --color-border: #d4a574;
  
  /* Typography */
  --font-primary: 'Courier New', 'Consolas', 'Monaco', monospace;
  --font-body: 'SF Pro Text', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
  --font-size-base: 16px;
  --font-size-small: 14px;
  --font-size-large: 18px;
  --font-size-xlarge: 24px;
  --font-size-xxlarge: 32px;
  --line-height-base: 1.5;
  --line-height-tight: 1.2;
  
  /* Spacing */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;
  
  /* Layout */
  --max-width-content: 1000px;
  --border-width: 3px;
  --border-radius: 0;
}

/* ============================================
   CSS RESET & BASE STYLES
   ============================================ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* ============================================
   SKIP LINK FOR KEYBOARD NAVIGATION
   ============================================ */
.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  background-color: var(--color-text-secondary);
  color: var(--color-bg-primary);
  padding: var(--spacing-sm) var(--spacing-md);
  text-decoration: none;
  font-weight: bold;
  z-index: 10000;
  border: var(--border-width) solid var(--color-border);
  box-shadow: 0 0 20px var(--color-glow);
}

.skip-link:focus {
  top: var(--spacing-sm);
  left: var(--spacing-sm);
  outline: 3px solid var(--color-accent);
  outline-offset: 4px;
}

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  line-height: var(--line-height-base);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  background-image: 
    radial-gradient(ellipse at center, #1a1a1a 0%, #0a0a0a 50%, #000000 100%),
    url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='0.03'/%3E%3C/svg%3E");
  min-height: 100vh;
  padding: var(--spacing-md);
}

/* ============================================
   TYPOGRAPHY BASE STYLES
   ============================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-primary);
  font-weight: bold;
  line-height: var(--line-height-tight);
  color: var(--color-text-secondary);
}

h1 {
  font-size: var(--font-size-xxlarge);
}

h2 {
  font-size: var(--font-size-xlarge);
}

h3 {
  font-size: var(--font-size-large);
}

/* Keep monospace for specific retro elements */
.site-title,
.tagline,
section h2,
.project-title,
.cert-title,
.resume-link,
.project-link,
.footer-link,
.retro-toggle,
.bio-text p:first-child,
.bio-text p:last-child {
  font-family: var(--font-primary);
}

p {
  margin-bottom: var(--spacing-sm);
}

a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: all 0.3s ease;
}

a:hover {
  color: var(--color-accent);
  text-shadow: 0 0 8px var(--color-glow);
}

a:focus {
  outline: 3px solid var(--color-accent);
  outline-offset: 4px;
  box-shadow: 0 0 15px var(--color-glow);
}

/* Enhanced focus styles for all interactive elements */
button:focus,
input:focus,
textarea:focus,
select:focus {
  outline: 3px solid var(--color-accent);
  outline-offset: 4px;
  box-shadow: 0 0 15px var(--color-glow);
}

/* Focus-visible for modern browsers (only show on keyboard focus) */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 4px;
  box-shadow: 0 0 15px var(--color-glow);
}

/* Remove outline for mouse clicks (modern browsers) */
a:focus:not(:focus-visible),
button:focus:not(:focus-visible),
input:focus:not(:focus-visible),
textarea:focus:not(:focus-visible),
select:focus:not(:focus-visible) {
  outline: none;
  box-shadow: none;
}

/* ============================================
   LAYOUT CONTAINER
   ============================================ */
main {
  max-width: var(--max-width-content);
  margin: 0 auto;
}

/* ============================================
   HEADER COMPONENT
   ============================================ */
header {
  text-align: center;
  padding: var(--spacing-xl) var(--spacing-md);
  margin-bottom: var(--spacing-xl);
  border: var(--border-width) solid var(--color-border);
  background-color: var(--color-bg-secondary);
  box-shadow: 0 0 20px var(--color-glow);
  position: relative;
}

.header-controls {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
}

.retro-toggle {
  background-color: var(--color-bg-primary);
  color: var(--color-text-secondary);
  border: 2px solid var(--color-border);
  padding: var(--spacing-xs) var(--spacing-sm);
  font-family: var(--font-primary);
  font-size: var(--font-size-small);
  cursor: pointer;
  transition: all 0.3s ease;
  text-shadow: 0 0 3px var(--color-glow);
}

.retro-toggle:hover {
  background-color: var(--color-text-secondary);
  color: var(--color-bg-primary);
  box-shadow: 0 0 10px var(--color-glow);
}

.retro-toggle:focus {
  outline: 3px solid var(--color-accent);
  outline-offset: 4px;
  box-shadow: 0 0 15px var(--color-glow);
}

.site-title {
  font-size: var(--font-size-xxlarge);
  letter-spacing: 2px;
  text-shadow: 0 0 10px var(--color-glow),
               0 0 20px var(--color-glow);
  margin-bottom: var(--spacing-sm);
  animation: textGlow 2s ease-in-out infinite alternate;
}

.tagline {
  font-size: var(--font-size-base);
  color: var(--color-text-primary);
  font-style: italic;
  text-shadow: 0 0 5px var(--color-glow);
}

@keyframes textGlow {
  from {
    text-shadow: 0 0 10px var(--color-glow),
                 0 0 20px var(--color-glow);
  }
  to {
    text-shadow: 0 0 15px var(--color-glow),
                 0 0 30px var(--color-glow),
                 0 0 40px var(--color-glow);
  }
}

/* ============================================
   SECTION STYLES (COMMON)
   ============================================ */
section {
  margin-bottom: var(--spacing-xl);
  padding: var(--spacing-lg);
  border: var(--border-width) solid var(--color-border);
  background-color: var(--color-bg-secondary);
  box-shadow: 0 0 15px var(--color-glow);
}

section h2 {
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--color-border);
  text-shadow: 0 0 8px var(--color-glow);
}

/* ============================================
   ABOUT ME SECTION
   ============================================ */
#about .about-content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.profile-photo-container {
  text-align: center;
}

.profile-photo {
  max-width: 200px;
  border: var(--border-width) solid var(--color-border);
  box-shadow: 0 0 15px var(--color-glow);
  filter: contrast(1.2) brightness(0.9);
}

.bio-text {
  padding: var(--spacing-md);
  border: 2px solid var(--color-border);
  background-color: var(--color-bg-primary);
}

.bio-text p {
  margin-bottom: var(--spacing-sm);
}

.bio-text p:first-child,
.bio-text p:last-child {
  color: var(--color-text-secondary);
  font-weight: bold;
}

/* ============================================
   CERTIFICATIONS SECTION
   ============================================ */
.certifications-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-md);
}

.certification {
  display: block;
  padding: var(--spacing-md);
  border: 2px solid var(--color-border);
  background-color: var(--color-bg-primary);
  transition: all 0.3s ease;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}

.certification:hover,
.certification:focus {
  box-shadow: 0 0 15px var(--color-glow);
  transform: translateY(-2px);
  border-color: var(--color-accent);
}

.cert-title {
  margin-bottom: var(--spacing-xs);
  color: var(--color-text-secondary);
  font-size: var(--font-size-large);
  text-shadow: 0 0 5px var(--color-glow);
}

.cert-issuer {
  color: var(--color-text-primary);
  font-size: var(--font-size-small);
  font-style: italic;
}

/* ============================================
   RESUME SECTION
   ============================================ */
#resume .resume-container {
  text-align: center;
  padding: var(--spacing-md);
}

.resume-description {
  margin-bottom: var(--spacing-md);
  font-style: italic;
}

.resume-link {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  border: var(--border-width) solid var(--color-border);
  background-color: var(--color-bg-primary);
  color: var(--color-text-secondary);
  font-size: var(--font-size-large);
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 2px;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 0 10px var(--color-glow);
}

.resume-link:hover {
  background-color: var(--color-text-secondary);
  color: var(--color-bg-primary);
  box-shadow: 0 0 20px var(--color-glow),
              0 0 30px var(--color-glow);
  transform: translateY(-2px);
}

.resume-link:active {
  transform: translateY(0);
  box-shadow: 0 0 10px var(--color-glow);
}

.resume-link:focus {
  outline: 3px solid var(--color-accent);
  outline-offset: 4px;
  box-shadow: 0 0 20px var(--color-glow),
              0 0 30px var(--color-glow);
}

.resume-link:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 4px;
  box-shadow: 0 0 20px var(--color-glow),
              0 0 30px var(--color-glow);
}

/* ============================================
   PROJECTS SECTION
   ============================================ */
.projects-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
}

.project {
  padding: var(--spacing-md);
  border: 2px solid var(--color-border);
  background-color: var(--color-bg-primary);
  transition: all 0.3s ease;
}

.project:hover {
  box-shadow: 0 0 20px var(--color-glow);
  transform: translateY(-4px);
}

.project:focus-within {
  box-shadow: 0 0 20px var(--color-glow);
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.project-title {
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-secondary);
  text-shadow: 0 0 5px var(--color-glow);
}

.project-description {
  margin-bottom: var(--spacing-md);
  line-height: var(--line-height-base);
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
}

.tech-tag {
  display: inline-block;
  padding: 4px 12px;
  border: 1px solid var(--color-border);
  background-color: var(--color-bg-secondary);
  font-size: var(--font-size-small);
  color: var(--color-text-primary);
}

.project-links {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.project-link {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  border: 2px solid var(--color-border);
  background-color: var(--color-bg-secondary);
  font-size: var(--font-size-small);
  font-weight: bold;
  transition: all 0.3s ease;
}

.project-link:hover {
  background-color: var(--color-text-secondary);
  color: var(--color-bg-primary);
  box-shadow: 0 0 10px var(--color-glow);
}

.project-link:focus {
  outline: 3px solid var(--color-accent);
  outline-offset: 4px;
  box-shadow: 0 0 15px var(--color-glow);
}

.project-link:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 4px;
  box-shadow: 0 0 15px var(--color-glow);
}

/* ============================================
   SKILLS SECTION
   ============================================ */
.skills-container {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.skill-category {
  border: 2px solid var(--color-border);
  padding: var(--spacing-md);
  background-color: var(--color-bg-secondary);
}

.skill-category-title {
  font-family: var(--font-primary);
  font-size: var(--font-size-large);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
  font-weight: bold;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.skill-tag {
  display: inline-block;
  padding: 6px 14px;
  border: 1px solid var(--color-border);
  background-color: var(--color-bg-primary);
  font-size: var(--font-size-small);
  color: var(--color-text-primary);
  font-family: var(--font-primary);
  transition: all 0.3s ease;
}

.skill-tag:hover {
  background-color: var(--color-text-primary);
  color: var(--color-bg-primary);
  box-shadow: 0 0 10px var(--color-glow);
}

/* Collapsible skill categories */
.skill-category.collapsible {
  border: 2px solid var(--color-border);
  padding: 0;
  background-color: var(--color-bg-secondary);
}

.skill-category-toggle {
  width: 100%;
  background: none;
  border: none;
  padding: var(--spacing-md);
  text-align: left;
  cursor: pointer;
  color: var(--color-text-primary);
  font-family: var(--font-primary);
  transition: background-color 0.3s ease;
}

.skill-category-toggle:hover {
  background-color: var(--color-bg-primary);
}

.skill-category-toggle:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.skill-category-toggle .skill-category-title {
  margin: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.toggle-indicator {
  font-size: var(--font-size-large);
  transition: transform 0.3s ease;
}

.skill-category-toggle[aria-expanded="true"] .toggle-indicator {
  transform: rotate(45deg);
}

.skill-tags.collapsed {
  display: none;
}

.skill-tags:not(.collapsed) {
  padding: 0 var(--spacing-md) var(--spacing-md) var(--spacing-md);
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

/* ============================================
   CONTACT FORM SECTION
   ============================================ */
#contact .contact-container {
  max-width: 600px;
  margin: 0 auto;
}

.contact-intro {
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-md);
  border: 2px solid var(--color-border);
  background-color: var(--color-bg-primary);
  text-align: center;
}

.contact-intro p {
  margin-bottom: var(--spacing-xs);
  font-family: var(--font-primary);
  color: var(--color-text-secondary);
  font-weight: bold;
}

.contact-form {
  margin-bottom: var(--spacing-lg);
}

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

.form-label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-family: var(--font-primary);
  font-weight: bold;
  color: var(--color-text-secondary);
  text-shadow: 0 0 3px var(--color-glow);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--spacing-sm);
  border: 2px solid var(--color-border);
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  transition: all 0.3s ease;
  box-sizing: border-box;
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 10px var(--color-glow);
  background-color: var(--color-bg-secondary);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: rgba(212, 165, 116, 0.6);
  font-style: italic;
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
  line-height: var(--line-height-base);
}

.form-actions {
  text-align: center;
  margin-bottom: var(--spacing-md);
}

.form-submit {
  padding: var(--spacing-sm) var(--spacing-lg);
  border: var(--border-width) solid var(--color-border);
  background-color: var(--color-bg-primary);
  color: var(--color-text-secondary);
  font-family: var(--font-primary);
  font-size: var(--font-size-large);
  font-weight: bold;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 0 10px var(--color-glow);
  min-width: 200px;
}

.form-submit:hover:not(:disabled) {
  background-color: var(--color-text-secondary);
  color: var(--color-bg-primary);
  box-shadow: 0 0 20px var(--color-glow);
  transform: translateY(-2px);
}

.form-submit:focus {
  outline: 3px solid var(--color-accent);
  outline-offset: 4px;
  box-shadow: 0 0 20px var(--color-glow);
}

.form-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.submit-timer {
  margin-top: var(--spacing-sm);
  font-family: var(--font-primary);
  font-size: var(--font-size-small);
  color: var(--color-text-primary);
  text-align: center;
}

.submit-timer.hidden {
  display: none;
}

/* Honeypot field - hidden from real users */
.honeypot-field {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.error-message {
  margin-top: var(--spacing-xs);
  font-size: var(--font-size-small);
  color: #ff6b6b;
  font-family: var(--font-primary);
  min-height: 20px;
}

.form-status {
  padding: var(--spacing-sm);
  border: 2px solid var(--color-border);
  background-color: var(--color-bg-primary);
  font-family: var(--font-primary);
  font-weight: bold;
  text-align: center;
  margin-top: var(--spacing-md);
  display: none;
}

.form-status.success {
  display: block;
  color: #4ade80;
  border-color: #4ade80;
  box-shadow: 0 0 10px rgba(74, 222, 128, 0.3);
}

.form-status.error {
  display: block;
  color: #ff6b6b;
  border-color: #ff6b6b;
  box-shadow: 0 0 10px rgba(255, 107, 107, 0.3);
}

.contact-alt {
  text-align: center;
  padding: var(--spacing-md);
  border: 2px solid var(--color-border);
  background-color: var(--color-bg-primary);
}

.contact-note {
  margin-bottom: var(--spacing-sm);
  font-family: var(--font-primary);
  color: var(--color-text-primary);
  font-style: italic;
}

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

.alt-contact-link {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  border: 2px solid var(--color-border);
  background-color: var(--color-bg-secondary);
  font-family: var(--font-primary);
  font-size: var(--font-size-small);
  font-weight: bold;
  transition: all 0.3s ease;
}

.alt-contact-link:hover {
  background-color: var(--color-text-secondary);
  color: var(--color-bg-primary);
  box-shadow: 0 0 10px var(--color-glow);
}

.alt-contact-link:focus {
  outline: 3px solid var(--color-accent);
  outline-offset: 4px;
  box-shadow: 0 0 15px var(--color-glow);
}

/* ============================================
   RETRO VISUAL EFFECTS
   ============================================ */

/* CRT Scan Lines Overlay */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: repeating-linear-gradient(
    0deg,
    rgba(0, 0, 0, 0.15),
    rgba(0, 0, 0, 0.15) 1px,
    transparent 1px,
    transparent 2px
  );
  pointer-events: none;
  z-index: 9999;
  transition: opacity 0.3s ease;
}

/* Screen Glow Effect */
body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(
    ellipse at center,
    transparent 0%,
    rgba(0, 0, 0, 0.3) 100%
  );
  pointer-events: none;
  z-index: 9998;
  transition: opacity 0.3s ease;
}

/* Text Glow for All Text Elements */
h1, h2, h3 {
  text-shadow: 0 0 8px var(--color-glow);
  transition: text-shadow 0.3s ease;
}

p, a, span {
  text-shadow: 0 0 3px var(--color-glow);
  transition: text-shadow 0.3s ease;
}

/* Screen Flicker Animation (Subtle) */
@keyframes flicker {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.98; }
}

body {
  animation: flicker 0.15s infinite;
}

/* ============================================
   RETRO EFFECTS DISABLED STATE
   ============================================ */
body.retro-disabled::before,
body.retro-disabled::after {
  opacity: 0;
}

body.retro-disabled {
  animation: none;
  background-image: none;
  background: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 100%);
}

body.retro-disabled h1,
body.retro-disabled h2,
body.retro-disabled h3,
body.retro-disabled p,
body.retro-disabled a,
body.retro-disabled span {
  text-shadow: none;
}

body.retro-disabled .site-title {
  animation: none;
  text-shadow: none;
}

body.retro-disabled section,
body.retro-disabled header,
body.retro-disabled footer {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

body.retro-disabled .resume-link:hover,
body.retro-disabled .project-link:hover,
body.retro-disabled .footer-link:hover,
body.retro-disabled .form-submit:hover:not(:disabled),
body.retro-disabled .alt-contact-link:hover {
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.4);
}

body.retro-disabled .form-input:focus,
body.retro-disabled .form-textarea:focus {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

/* ============================================
   FOOTER COMPONENT
   ============================================ */
footer {
  margin-top: var(--spacing-xl);
  padding: var(--spacing-lg);
  border: var(--border-width) solid var(--color-border);
  background-color: var(--color-bg-secondary);
  box-shadow: 0 0 15px var(--color-glow);
  text-align: center;
}

.footer-content {
  max-width: var(--max-width-content);
  margin: 0 auto;
}

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

.footer-link {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  border: 2px solid var(--color-border);
  background-color: var(--color-bg-primary);
  font-size: var(--font-size-small);
  font-weight: bold;
  transition: all 0.3s ease;
}

.footer-link:hover {
  background-color: var(--color-text-secondary);
  color: var(--color-bg-primary);
  box-shadow: 0 0 10px var(--color-glow);
}

.footer-link:focus {
  outline: 3px solid var(--color-accent);
  outline-offset: 4px;
  box-shadow: 0 0 15px var(--color-glow);
}

.footer-link:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 4px;
  box-shadow: 0 0 15px var(--color-glow);
}

.copyright,
.footer-message {
  font-size: var(--font-size-small);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-xs);
}

.footer-message {
  font-style: italic;
}

/* ============================================
   RESPONSIVE DESIGN - MOBILE FIRST
   ============================================ */

/* Mobile devices (≤768px) - Base styles above are mobile-first */
/* Touch target minimum sizes for mobile accessibility */
@media screen and (max-width: 768px) {
  /* Ensure all interactive elements meet 44x44px minimum */
  a, button, .resume-link, .project-link, .footer-link {
    min-height: 44px;
    min-width: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
  
  /* Resume link - ensure adequate touch target */
  .resume-link {
    padding: 12px var(--spacing-lg);
  }
  
  /* Project links - ensure adequate touch target */
  .project-link {
    padding: 12px var(--spacing-sm);
  }
  
  /* Skills section - ensure adequate touch targets */
  .skill-tag {
    padding: 8px 12px;
    min-height: 32px;
    display: flex;
    align-items: center;
  }
  
  .skills-container {
    gap: var(--spacing-md);
  }
  
  /* Footer links - ensure adequate touch target */
  .footer-link {
    padding: 12px var(--spacing-sm);
  }
}

/* Adjustments for very small screens */
@media screen and (max-width: 480px) {
  :root {
    --font-size-base: 14px;
    --font-size-xxlarge: 24px;
    --font-size-xlarge: 20px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
  }
  
  body {
    padding: var(--spacing-sm);
  }
  
  header {
    padding: var(--spacing-md);
  }
  
  .header-controls {
    position: static;
    margin-bottom: var(--spacing-sm);
  }
  
  .site-title {
    font-size: var(--font-size-xlarge);
    letter-spacing: 1px;
  }
  
  section {
    padding: var(--spacing-md);
  }
  
  .projects-container {
    grid-template-columns: 1fr;
  }
  
  .alt-contact-links {
    flex-direction: column;
    align-items: center;
  }
  
  .form-submit {
    min-width: auto;
    width: 100%;
  }
}

/* Tablet devices (769px - 1024px) */
@media screen and (min-width: 769px) and (max-width: 1024px) {
  .projects-container {
    grid-template-columns: repeat(2, 1fr);
  }
  
  #about .about-content {
    flex-direction: row;
    align-items: flex-start;
  }
  
  .profile-photo-container {
    flex: 0 0 250px;
  }
  
  .bio-text {
    flex: 1;
  }
}

/* Desktop devices (>1024px) */
@media screen and (min-width: 1025px) {
  .projects-container {
    grid-template-columns: repeat(3, 1fr);
  }
  
  #about .about-content {
    flex-direction: row;
    align-items: flex-start;
    gap: var(--spacing-lg);
  }
  
  .profile-photo-container {
    flex: 0 0 300px;
  }
  
  .bio-text {
    flex: 1;
  }
}

/* CRT Flicker Effect - Triggered by JavaScript */
.crt-flicker {
  animation: crtFlickerEffect 0.1s ease-in-out;
}

@keyframes crtFlickerEffect {
  0% { opacity: 1; }
  25% { opacity: 0.95; }
  50% { opacity: 0.98; }
  75% { opacity: 0.93; }
  100% { opacity: 1; }
}

/* Smooth scrolling for browsers that don't support scroll-behavior */
html {
  scroll-behavior: smooth;
}

/* Focus styles for keyboard navigation after smooth scroll */
:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 4px;
}

/* Skip link focus visible */
.skip-link:focus {
  clip: auto;
  height: auto;
  width: auto;
  position: absolute;
  top: 10px;
  left: 10px;
}