/* ============================================
   Java UI - The Complete Guide - Modern Theme
   Bold Colors with High Contrast
   ============================================ */

/* === CSS Variables for Theming === */
:root {
  /* New Bold Color Palette */
  --color-primary: #ff7d00;        /* Vivid Tangerine - Primary accent */
  --color-primary-light: #ffa040;  /* Lighter Tangerine */
  --color-primary-dark: #78290f;   /* Brandy - Dark accent */
  --color-secondary: #15616d;      /* Stormy Teal */
  --color-accent: #ff7d00;         /* Vivid Tangerine */
  --color-accent-2: #78290f;       /* Brandy */
  
  /* Neutral Colors */
  --color-bg: #ffecd1;             /* Papaya Whip - Warm background */
  --color-surface: #FFFFFF;        /* Pure White */
  --color-text: #001524;           /* Ink Black - High contrast text */
  --color-text-light: #15616d;     /* Stormy Teal for secondary text */
  --color-border: #15616d;         /* Stormy Teal for borders */
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
  --font-family-heading: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
  --font-size-base: 16px;
  --line-height: 1.6;
  
  /* Transitions */
  --transition-speed: 0.3s;
  --transition-smooth: cubic-bezier(0.4, 0, 0.2, 1);
}

/* === Global Styles === */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-family);
  line-height: var(--line-height);
  color: var(--color-text);
  background: var(--color-bg);
  background-image: 
    linear-gradient(135deg, rgba(255, 125, 0, 0.08) 0%, transparent 50%),
    linear-gradient(45deg, rgba(21, 97, 109, 0.08) 50%, transparent 100%);
  background-attachment: fixed;
  min-height: 100vh;
  padding: var(--spacing-lg);
  overflow-x: hidden;
}

/* === HTMX Transition Animations === */
body.htmx-swapping {
  opacity: 0;
  transform: translateY(-10px);
  transition: opacity var(--transition-speed) var(--transition-smooth),
              transform var(--transition-speed) var(--transition-smooth);
}

body.htmx-settling {
  opacity: 1;
  transform: translateY(0);
}

/* Fade-in animation for page load */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

#main-content {
  animation: fadeIn 0.6s var(--transition-smooth);
}

/* === Typography === */
h1 {
  font-family: var(--font-family-heading);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-secondary);
  margin-bottom: var(--spacing-md);
  line-height: 1.2;
}

h2 {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-text);
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
}

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

/* === Index Page Header Styles === */
#main-content > h1:first-of-type {
  text-align: center;
  max-width: 100%;
}

/* Style both intro paragraphs with centered text and constrained width */
#main-content > p:first-of-type,
#main-content > p:nth-of-type(2) {
  text-align: center;
  max-width: 80ch;
  margin-left: auto;
  margin-right: auto;
}

/* === Main Content Container === */
#main-content {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--spacing-xl);
  background: var(--color-surface);
  border-radius: 24px;
  border: 1px solid var(--color-primary);
  position: relative;
  overflow: hidden;
}

/* Sweeping decorative element */
#main-content::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 125, 0, 0.06) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
}

#main-content::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(21, 97, 109, 0.06) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
}

#main-content > * {
  position: relative;
  z-index: 1;
}

/* === Gallery-Style Project Grid === */
.project-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.project-card {
  display: block;
  background: var(--color-surface);
  border: 2px solid var(--color-primary);
  border-radius: 16px;
  text-decoration: none;
  color: var(--color-text);
  transition: all var(--transition-speed) var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.project-card-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--spacing-md);
  gap: var(--spacing-sm);
}

.project-thumbnail {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: 8px;
  margin: 0;
  transition: transform var(--transition-speed) var(--transition-smooth);
}

.project-name {
  font-weight: 600;
  font-size: 1.1rem;
  text-align: center;
  padding: var(--spacing-xs) 0;
  color: var(--color-text);
}

/* Sweeping accent line on hover */
.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, 
    transparent 0%, 
    var(--color-primary) 50%, 
    transparent 100%);
  transition: left 0.6s var(--transition-smooth);
  z-index: 10;
}

.project-card:hover::before {
  left: 100%;
}

.project-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-primary);
  background: var(--color-surface);
}

.project-card:hover .project-thumbnail {
  transform: scale(1.02);
}

.project-card:active {
  transform: translateY(-2px);
}

/* === GitHub CTA Button === */
.github-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-lg);
  margin: var(--spacing-lg) auto;
  background: var(--color-primary);
  border: none;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: all var(--transition-speed) var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

/* Ensure all text content in button is light colored */
.github-cta,
.github-cta i,
.github-cta span {
  color: var(--color-bg);
}

.github-cta i {
  font-size: 1.2rem;
}

.github-cta::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, 
    transparent 0%, 
    rgba(255, 255, 255, 0.3) 50%, 
    transparent 100%);
  transition: left 0.6s var(--transition-smooth);
}

.github-cta:hover::before {
  left: 100%;
}

.github-cta:hover {
  transform: translateY(-2px);
  opacity: 0.9;
}

.github-cta:active {
  transform: translateY(0);
}

.github-cta-container {
  text-align: center;
  margin: var(--spacing-xl) 0;
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

/* Tags CTA Button - styled as a button element */
.tags-cta {
  cursor: pointer;
  font-family: var(--font-family);
}

button.github-cta {
  border: none;
  background: var(--color-primary);
  cursor: pointer;
}

button.github-cta:hover {
  transform: translateY(-2px);
  opacity: 0.9;
}

button.github-cta:active {
  transform: translateY(0);
}

/* === Back Link === */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  background: var(--color-bg);
  border: 2px solid var(--color-primary);
  border-radius: 50px;
  text-decoration: none;
  color: var(--color-text);
  font-weight: 500;
  font-size: 0.9rem;
  transition: all var(--transition-speed) var(--transition-smooth);
}

.back-link:hover {
  background: var(--color-primary);
  color: var(--color-bg);
  border-color: var(--color-primary);
  transform: translateX(-4px);
}

/* === Images === */
img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  margin: var(--spacing-md) 0;
  transition: transform var(--transition-speed) var(--transition-smooth);
}

img:hover {
  transform: scale(1.02);
}

/* === Links === */
a:not(.back-link):not(.project-list a):not(.github-cta):not(.tag-cloud-item):not(.tag) {
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-color: var(--color-primary);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
  font-weight: 600;
  position: relative;
  transition: color var(--transition-speed) var(--transition-smooth);
}

a:not(.back-link):not(.project-list a):not(.github-cta):not(.tag-cloud-item):not(.tag):hover {
  color: var(--color-primary-dark);
  text-decoration-color: var(--color-primary-dark);
}

/* External link icon */
a[target="_blank"]:not(.back-link):not(.project-list a) i {
  margin-left: 0.25rem;
  font-size: 0.9em;
  vertical-align: baseline;
}

/* === Tags === */
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin: var(--spacing-md) 0;
}

.tag {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--color-primary);
  color: var(--color-bg);
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  transition: transform var(--transition-speed) var(--transition-smooth);
}

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

/* === Code Blocks === */
pre {
  background: #001524;
  color: #ffecd1;
  padding: var(--spacing-md);
  border-radius: 12px;
  overflow-x: auto;
  margin: var(--spacing-md) 0;
  border-left: 4px solid var(--color-primary);
}

code {
  font-family: 'Fira Code', 'Consolas', 'Monaco', 'Courier New', monospace;
  font-size: 0.9rem;
  line-height: 1.5;
}

/* === Responsive Design === */
@media (max-width: 768px) {
  body {
    padding: var(--spacing-sm);
  }
  
  #main-content {
    padding: var(--spacing-md);
    border-radius: 16px;
  }
  
  h1 {
    font-size: 2rem;
  }
  
  .project-list {
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 1.75rem;
  }
  
  h2 {
    font-size: 1.5rem;
  }
  
  .project-list a {
    font-size: 1rem;
    padding: var(--spacing-sm) var(--spacing-md);
  }
}

/* === Print Styles === */
@media print {
  body {
    background: white;
    padding: 0;
  }
  
  #main-content::before,
  #main-content::after {
    display: none;
  }
  
  .back-link {
    display: none;
  }
}

/* === Accessibility === */
/* Hidden utility class */
.hidden {
  display: none;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Focus styles for keyboard navigation */
a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 4px;
}

/* === Tag Cloud Section === */
.tag-cloud-section {
  margin: var(--spacing-xl) 0;
  padding: var(--spacing-lg) 0;
}

.tag-separator {
  border: none;
  height: 2px;
  background: var(--color-primary); /* vivid tangerine */
  margin: var(--spacing-lg) auto var(--spacing-md) auto;
  max-width: 200px;
  border-radius: 2px;
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-sm);
}

.tag-cloud-item {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-md);
  background: var(--color-primary);
  color: var(--color-bg);
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-speed) var(--transition-smooth);
  border: 2px solid var(--color-primary);
}

.tag-cloud-item:hover {
  transform: translateY(-2px);
  background: var(--color-bg);
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.tag-cloud-item:active {
  transform: translateY(0);
}