/* ============================================
   STACK PAGE
   Purpose: Styles for stack.html
   GitHub Dark Mode + VS Code Aesthetic
   ============================================ */

/* ============================================
   MAIN CONTAINER
   ============================================ */
.stack-container {
  position: relative;
  z-index: var(--z-content);
  min-height: 100vh;
  padding: 80px var(--spacing-md) var(--spacing-xl);
}

@media (min-width: 768px) {
  .stack-container {
    padding: 100px var(--spacing-lg) var(--spacing-xxl);
  }
}

/* ============================================
   HEADER SECTION
   ============================================ */
.stack-header {
  max-width: 900px;
  margin: 0 auto var(--spacing-xxl);
  text-align: center;
}

@media (min-width: 768px) {
  .stack-header {
    margin-bottom: 80px;
  }
}

/* ============================================
   PAGE TITLE (Mobile-First)
   ============================================ */
.page-title {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  word-break: break-word;
  flex-wrap: wrap;
}

@media (min-width: 768px) {
  .page-title {
    font-size: 32px;
  }
}

@media (min-width: 1024px) {
  .page-title {
    font-size: 40px;
    margin-bottom: var(--spacing-lg);
  }
}

.page-title .code-symbol {
  color: var(--accent-green);
  flex-shrink: 0;
}

.page-subtitle {
  font-size: var(--font-small);
  line-height: 1.8;
  color: var(--text-secondary);
  margin: 0;
  padding: 0 var(--spacing-sm);
}

@media (min-width: 768px) {
  .page-subtitle {
    font-size: var(--font-body);
    padding: 0;
  }
}

@media (min-width: 1024px) {
  .page-subtitle {
    font-size: var(--font-subheading);
  }
}

/* ============================================
   SECTION STYLES
   ============================================ */
.section-heading {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  color: var(--text-white);
  text-align: center;
  margin-bottom: var(--spacing-md);
  word-break: break-word;
  padding: 0 var(--spacing-sm);
}

@media (min-width: 768px) {
  .section-heading {
    font-size: 28px;
    padding: 0;
  }
}

@media (min-width: 1024px) {
  .section-heading {
    font-size: 36px;
    margin-bottom: var(--spacing-lg);
  }
}

.section-description {
  font-size: var(--font-small);
  color: var(--text-secondary);
  text-align: center;
  max-width: 800px;
  margin: 0 auto var(--spacing-lg);
  line-height: 1.8;
  padding: 0 var(--spacing-sm);
}

@media (min-width: 768px) {
  .section-description {
    font-size: var(--font-body);
    margin-bottom: var(--spacing-xl);
    padding: 0;
  }
}

@media (min-width: 1024px) {
  .section-description {
    font-size: var(--font-subheading);
  }
}

/* Section Spacing */
.core-stack-section,
.auth-section,
.ai-section,
.libraries-section,
.when-needed-section,
.real-skill-section {
  max-width: 1400px;
  margin: 0 auto var(--spacing-xxl);
}

@media (min-width: 768px) {
  .core-stack-section,
  .auth-section,
  .ai-section,
  .libraries-section,
  .when-needed-section,
  .real-skill-section {
    margin-bottom: 80px;
  }
}

/* ============================================
   PHILOSOPHY SECTION (Terminal)
   ============================================ */
.philosophy-section {
  max-width: 900px;
  margin: 0 auto var(--spacing-xxl);
}

@media (min-width: 768px) {
  .philosophy-section {
    margin-bottom: 80px;
  }
}

.terminal-output {
  background: var(--bg-primary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  font-family: var(--font-mono);
  font-size: var(--font-tiny);
}

@media (min-width: 768px) {
  .terminal-output {
    padding: var(--spacing-lg);
    font-size: var(--font-small);
  }
}

@media (min-width: 1024px) {
  .terminal-output {
    padding: var(--spacing-xl);
    font-size: var(--font-body);
  }
}

.terminal-line {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-xs);
  opacity: 0;
  transform: translateX(-20px);
  flex-wrap: wrap;
}

@media (min-width: 768px) {
  .terminal-line {
    margin-bottom: var(--spacing-sm);
  }
}

.terminal-prompt {
  color: var(--accent-green);
  font-weight: 700;
  flex-shrink: 0;
}

.terminal-command {
  color: var(--accent-blue);
  word-break: break-word;
}

.terminal-text {
  color: var(--text-primary);
  word-break: break-word;
}

.terminal-line.terminal-success .terminal-text {
  color: var(--accent-green);
  font-weight: 600;
}

/* ============================================
   TECH GRID
   ============================================ */
.tech-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

@media (min-width: 768px) {
  .tech-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .tech-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ============================================
   TECH CARDS
   ============================================ */
.tech-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  transition: all var(--transition-normal);
  position: relative;
}

@media (min-width: 768px) {
  .tech-card {
    padding: var(--spacing-lg);
  }
}

@media (min-width: 1024px) {
  .tech-card {
    padding: var(--spacing-xl);
  }
}

.tech-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(
    90deg,
    var(--accent-blue),
    var(--accent-purple),
    var(--accent-green)
  );
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-normal);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.tech-card:hover::before {
  transform: scaleX(1);
}

.tech-card:hover {
  border-color: var(--accent-blue);
  box-shadow: var(--shadow-glow);
  transform: translateY(-4px);
}

/* Tech Card Highlight (for AI) */
.tech-card.tech-highlight {
  border-color: var(--accent-purple);
}

.tech-card.tech-highlight:hover {
  border-color: var(--accent-green);
}

/* Tech Card Alternate (for Optional) */
.tech-card.tech-alternate {
  border-color: var(--border-secondary);
  opacity: 0.9;
}

.tech-card.tech-alternate:hover {
  opacity: 1;
  border-color: var(--accent-orange);
}

.tech-icon {
  font-size: 40px;
  margin-bottom: var(--spacing-sm);
  display: block;
}

@media (min-width: 768px) {
  .tech-icon {
    font-size: 48px;
    margin-bottom: var(--spacing-md);
  }
}

@media (min-width: 1024px) {
  .tech-icon {
    font-size: 56px;
  }
}

.tech-name {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 600;
  color: var(--text-white);
  margin-bottom: var(--spacing-xs);
  word-break: break-word;
}

@media (min-width: 768px) {
  .tech-name {
    font-size: 20px;
    margin-bottom: var(--spacing-sm);
  }
}

@media (min-width: 1024px) {
  .tech-name {
    font-size: 24px;
  }
}

.tech-description {
  font-size: var(--font-small);
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
}

@media (min-width: 768px) {
  .tech-description {
    font-size: var(--font-body);
    margin-bottom: var(--spacing-md);
  }
}

/* Tech Badge */
.tech-badge {
  display: inline-block;
  padding: 4px 10px;
  background: var(--accent-blue);
  color: var(--text-white);
  font-family: var(--font-mono);
  font-size: var(--font-tiny);
  font-weight: 600;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

@media (min-width: 768px) {
  .tech-badge {
    font-size: var(--font-small);
    padding: 6px 12px;
  }
}

@media (min-width: 1024px) {
  .tech-badge {
    padding: 6px 16px;
  }
}

.tech-badge-alternate {
  background: var(--accent-orange);
}

/* ============================================
   REAL SKILL SECTION
   ============================================ */
.skill-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

@media (min-width: 768px) {
  .skill-content {
    grid-template-columns: repeat(2, 1fr);
  }
}

.skill-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  transition: all var(--transition-normal);
}

@media (min-width: 768px) {
  .skill-card {
    padding: var(--spacing-lg);
  }
}

@media (min-width: 1024px) {
  .skill-card {
    padding: var(--spacing-xl);
  }
}

.skill-card:hover {
  border-color: var(--accent-green);
  box-shadow: var(--shadow-glow);
  transform: translateY(-4px);
}

.skill-title {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 600;
  color: var(--text-white);
  margin-bottom: var(--spacing-xs);
  word-break: break-word;
}

@media (min-width: 768px) {
  .skill-title {
    font-size: 20px;
    margin-bottom: var(--spacing-sm);
  }
}

@media (min-width: 1024px) {
  .skill-title {
    font-size: 24px;
  }
}

.skill-text {
  font-size: var(--font-small);
  line-height: 1.8;
  color: var(--text-secondary);
  margin: 0;
}

@media (min-width: 768px) {
  .skill-text {
    font-size: var(--font-body);
  }
}

/* ============================================
   CTA SECTION
   ============================================ */
.cta-section {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-lg);
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  text-align: center;
}

@media (min-width: 768px) {
  .cta-section {
    padding: var(--spacing-xl);
  }
}

@media (min-width: 1024px) {
  .cta-section {
    padding: 48px;
  }
}

.cta-section h2 {
  font-family: var(--font-mono);
  font-size: 20px;
  color: var(--text-white);
  margin-bottom: var(--spacing-sm);
  word-break: break-word;
  padding: 0 var(--spacing-xs);
}

@media (min-width: 768px) {
  .cta-section h2 {
    font-size: 28px;
    margin-bottom: var(--spacing-md);
    padding: 0;
  }
}

@media (min-width: 1024px) {
  .cta-section h2 {
    font-size: 36px;
    margin-bottom: var(--spacing-lg);
  }
}

.cta-section p {
  font-size: var(--font-small);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  padding: 0 var(--spacing-xs);
}

@media (min-width: 768px) {
  .cta-section p {
    font-size: var(--font-body);
    margin-bottom: var(--spacing-lg);
    padding: 0;
  }
}

@media (min-width: 1024px) {
  .cta-section p {
    font-size: var(--font-subheading);
    margin-bottom: var(--spacing-xl);
  }
}

.cta-buttons {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

@media (min-width: 768px) {
  .cta-buttons {
    flex-direction: row;
    justify-content: center;
    gap: var(--spacing-md);
  }
}

@media (min-width: 1024px) {
  .cta-buttons {
    gap: var(--spacing-lg);
  }
}

/* ============================================
   ANIMATIONS
   ============================================ */
[data-animate] {
  opacity: 0;
  transform: translateY(20px);
}

[data-animate].fade-in-up {
  opacity: 1;
  transform: translateY(0);
  animation: fadeInUp 0.6s ease;
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
  .back-button,
  .language-toggle,
  #bg-canvas {
    display: none;
  }
  
  .tech-card {
    break-inside: avoid;
  }
}