/**
 * Yemzikk.in Design System
 * Unified styles, colors, and components for the entire portfolio
 * Last updated: December 1, 2025
 */

/* ==================== CSS Variables / Design Tokens ==================== */
:root {
  /* Brand Colors */
  --color-primary: #3498db;
  --color-primary-dark: #2980b9;
  --color-primary-light: #60a5fa;
  --color-secondary: #10b981;
  --color-secondary-dark: #059669;
  --color-accent: #f59e0b;
  --color-accent-dark: #d97706;

  /* Neutral Colors */
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;

  /* Semantic Colors */
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  --color-info: #3b82f6;

  /* Background Colors */
  --bg-base: #ffffff;
  --bg-elevated: #f9fafb;
  --bg-overlay: rgba(0, 0, 0, 0.5);

  /* Text Colors */
  --text-primary: #111827;
  --text-secondary: #6b7280;
  --text-tertiary: #9ca3af;
  --text-inverse: #ffffff;

  /* Border Colors */
  --border-base: #e5e7eb;
  --border-strong: #d1d5db;
  --border-focus: #3498db;

  /* Spacing Scale */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;

  /* Typography Scale */
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  --font-size-6xl: 3.75rem;

  /* Font Weights */
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;

  /* Line Heights */
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;

  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-base: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-base:
    0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
  --shadow-md:
    0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg:
    0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl:
    0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Z-Index Scale */
  --z-base: 1;
  --z-dropdown: 10;
  --z-sticky: 20;
  --z-fixed: 30;
  --z-modal-backdrop: 40;
  --z-modal: 50;
  --z-popover: 60;
  --z-tooltip: 70;
}

/* Dark Mode Variables */
.dark {
  --bg-base: #09090b;
  --bg-elevated: #18181b;
  --bg-overlay: rgba(0, 0, 0, 0.75);

  --text-primary: #f4f4f5;
  --text-secondary: #a1a1aa;
  --text-tertiary: #71717a;
  --text-inverse: #09090b;

  --border-base: #27272a;
  --border-strong: #3f3f46;
  --border-focus: #60a5fa;
}

/* ==================== Global Resets & Base Styles ==================== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  padding: 0;
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, sans-serif;
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--text-primary);
  background-color: var(--bg-base);
  transition:
    background-color var(--transition-base),
    color var(--transition-base);
}

/* ==================== Typography ==================== */
h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--text-primary);
}

h1 {
  font-size: var(--font-size-5xl);
}

h2 {
  font-size: var(--font-size-3xl);
}

h3 {
  font-size: var(--font-size-2xl);
}

h4 {
  font-size: var(--font-size-xl);
}

h5 {
  font-size: var(--font-size-lg);
}

h6 {
  font-size: var(--font-size-base);
}

p {
  margin: 0;
  color: var(--text-secondary);
}

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

a:hover {
  color: var(--color-primary-dark);
}

a:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* ==================== Accessibility ==================== */
/* Skip to main content link */
.skip-to-main {
  position: absolute;
  top: -100px;
  left: var(--space-4);
  z-index: var(--z-tooltip);
  padding: var(--space-3) var(--space-6);
  background-color: var(--color-primary);
  color: var(--text-inverse);
  border-radius: var(--radius-base);
  font-weight: var(--font-weight-semibold);
  text-decoration: none;
}

.skip-to-main:focus {
  top: var(--space-4);
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
}

/* Focus visible styles */
*:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
}

/* 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;
  }
}

/* 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-width: 0;
}

/* ==================== Component Styles ==================== */

/* Button Base */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-normal);
  border: 1px solid transparent;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  min-height: 44px; /* WCAG touch target size */
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--text-inverse);
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--color-primary-dark);
}

.btn-secondary {
  background-color: var(--color-secondary);
  color: var(--text-inverse);
}

.btn-secondary:hover:not(:disabled) {
  background-color: var(--color-secondary-dark);
}

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

.btn-outline:hover:not(:disabled) {
  background-color: var(--bg-elevated);
  border-color: var(--color-primary);
}

/* Card Component */
.card {
  background-color: var(--bg-base);
  border: 1px solid var(--border-base);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-base);
  transition: all var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

/* Badge Component */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.badge-success {
  background-color: #d1fae5;
  color: #065f46;
}

.badge-warning {
  background-color: #fef3c7;
  color: #92400e;
}

.badge-error {
  background-color: #fee2e2;
  color: #991b1b;
}

.badge-info {
  background-color: #dbeafe;
  color: #1e40af;
}

/* Dark mode badge colors */
.dark .badge-success {
  background-color: #065f46;
  color: #d1fae5;
}

.dark .badge-warning {
  background-color: #92400e;
  color: #fef3c7;
}

.dark .badge-error {
  background-color: #991b1b;
  color: #fee2e2;
}

.dark .badge-info {
  background-color: #1e40af;
  color: #dbeafe;
}

/* Input Component */
.input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--text-primary);
  background-color: var(--bg-base);
  border: 1px solid var(--border-base);
  border-radius: var(--radius-base);
  transition: all var(--transition-fast);
}

.input:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.input::placeholder {
  color: var(--text-tertiary);
}

/* Container */
.container {
  width: 100%;
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

@media (min-width: 640px) {
  .container {
    padding-left: var(--space-6);
    padding-right: var(--space-6);
  }
}

@media (min-width: 1024px) {
  .container {
    padding-left: var(--space-8);
    padding-right: var(--space-8);
  }
}

/* Loading Spinner */
.spinner {
  display: inline-block;
  width: 1.5rem;
  height: 1.5rem;
  border: 3px solid var(--border-base);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* Theme Toggle - pill button (legacy, kept for compatibility) */
.theme-toggle {
  position: fixed;
  top: var(--space-6);
  right: var(--space-6);
  z-index: var(--z-fixed);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0 var(--space-5);
  height: 2.5rem;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  white-space: nowrap;
  background-color: var(--bg-elevated);
  color: var(--text-primary);
  border: 1px solid var(--border-base);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  backdrop-filter: blur(10px);
}

.theme-toggle svg {
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
}

.theme-toggle:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-lg);
}

/* Theme Toggle - icon button */
.theme-icon-btn {
  width: 2rem;
  height: 2rem;
  border-radius: 0.5rem;
  background: transparent;
  border: 1px solid var(--border-base);
  display: grid;
  place-items: center;
  cursor: pointer;
  color: var(--text-secondary);
  transition:
    border-color 200ms,
    color 200ms,
    background 200ms;
  flex-shrink: 0;
  padding: 0;
}

.theme-icon-btn:hover {
  border-color: rgba(96, 165, 250, 0.4);
  color: #60a5fa;
}

.theme-icon-btn .icon-sun,
.theme-icon-btn .icon-moon {
  grid-area: 1 / 1;
  width: 0.9rem;
  height: 0.9rem;
  transition:
    opacity 200ms,
    transform 200ms;
}

/* Light mode: show moon (click to go dark), hide sun */
.theme-icon-btn .icon-sun {
  opacity: 0;
  transform: rotate(-45deg) scale(0.7);
}
.theme-icon-btn .icon-moon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

/* Dark mode: show sun (click to go light), hide moon */
.dark .theme-icon-btn .icon-sun {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}
.dark .theme-icon-btn .icon-moon {
  opacity: 0;
  transform: rotate(45deg) scale(0.7);
}

/* Utility Classes */
.text-center {
  text-align: center;
}

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

.text-secondary {
  color: var(--text-secondary);
}

.text-brand {
  color: var(--color-primary);
}

.bg-elevated {
  background-color: var(--bg-elevated);
}

.rounded {
  border-radius: var(--radius-base);
}

.rounded-lg {
  border-radius: var(--radius-lg);
}

.rounded-xl {
  border-radius: var(--radius-xl);
}

.shadow {
  box-shadow: var(--shadow-base);
}

.shadow-lg {
  box-shadow: var(--shadow-lg);
}

/* Selection Colors */
::selection {
  background-color: #3b82f6;
  color: #ffffff;
}

::-moz-selection {
  background-color: #3b82f6;
  color: #ffffff;
}

/* ==================== Site Navigation ==================== */
.site-nav {
  position: sticky;
  top: 0;
  z-index: var(--z-fixed);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  height: 60px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-base);
  transition:
    background var(--transition-base),
    border-color var(--transition-base);
}

.dark .site-nav {
  background: rgba(9, 9, 11, 0.85);
  border-bottom: 1px solid var(--border-base);
}

.nav-logo {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.nav-logo:hover {
  color: var(--text-primary);
}

.nav-cursor {
  color: #3b82f6;
  animation: blink-cursor 1s step-end infinite;
  margin-left: 1px;
}

@keyframes blink-cursor {
  50% {
    opacity: 0;
  }
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.nav-mobile-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  padding: 0.5rem;
  background: none;
  border: none;
  cursor: pointer;
}

.hamburger-line {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--bg-base);
    border-bottom: 1px solid var(--border-base);
    flex-direction: column;
    align-items: flex-start;
    padding: 1rem 1.5rem 1.5rem;
    gap: 1.25rem;
    z-index: var(--z-fixed);
  }

  .nav-links.nav-open {
    display: flex;
  }

  .nav-mobile-btn {
    display: flex;
  }

  /* Hide text labels on mobile */
  .site-nav .theme-light-only,
  .site-nav .theme-dark-only {
    display: none;
  }

  /* Compact switch in nav */
  .site-nav .theme-toggle-switch {
    position: static;
    padding: var(--space-2);
    top: auto;
    right: auto;
    font-size: 0;
  }
}

/* ==================== Bento Grid ==================== */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.bento-card {
  background: var(--bg-base);
  border: 1px solid var(--border-base);
  border-radius: 1rem;
  padding: 1.5rem;
  transition:
    border-color var(--transition-base),
    transform var(--transition-base),
    box-shadow var(--transition-base);
  position: relative;
  overflow: hidden;
}

.dark .bento-card {
  background: var(--bg-elevated);
}

.bento-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

.dark .bento-card:hover {
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
}

.bento-card-span2 {
  grid-column: span 2;
}

.bento-card-wide {
  grid-column: 1 / -1;
}

.bento-label {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-tertiary);
  margin-bottom: 0.75rem;
  display: block;
}

.bento-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 0.25rem;
}

.bento-body {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  margin: 0;
}

.bento-link {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  margin-top: 1rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-primary);
  text-decoration: none;
  transition:
    gap var(--transition-fast),
    color var(--transition-fast);
}

.bento-link:hover {
  gap: 0.5rem;
  color: var(--color-primary-dark);
}

@media (max-width: 900px) {
  .bento-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .bento-card-wide {
    grid-column: 1 / -1;
  }
}

@media (max-width: 600px) {
  .bento-grid {
    grid-template-columns: 1fr;
  }
  .bento-card-span2,
  .bento-card-wide {
    grid-column: 1;
  }
}

/* ==================== Hero Card ==================== */
.hero-card {
  padding: 0;
}

.hero-browser-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  border-bottom: 1px solid var(--border-base);
  background: var(--bg-elevated);
  border-radius: 1rem 1rem 0 0;
}

.browser-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
}

.browser-dot-red {
  background: #ff5f57;
}
.browser-dot-yellow {
  background: #febc2e;
}
.browser-dot-green {
  background: #28c840;
}

.browser-url-bar {
  flex: 1;
  display: flex;
  justify-content: center;
}

.browser-url {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  font-family: monospace;
  background: var(--bg-base);
  border: 1px solid var(--border-base);
  border-radius: 0.375rem;
  padding: 0.2rem 0.75rem;
}

.hero-body {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  padding: 2.5rem;
  flex-wrap: wrap;
}

@media (max-width: 600px) {
  .hero-body {
    flex-direction: column;
    align-items: flex-start;
    padding: 1.5rem;
    gap: 1.5rem;
  }
}

/* ==================== Avatar Ring ==================== */
.avatar-wrapper {
  position: relative;
  width: 140px;
  height: 140px;
  flex-shrink: 0;
}

.avatar-ring {
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  background: conic-gradient(from 0deg, #60a5fa, #a78bfa, #34d399, #60a5fa);
  animation: spin-ring 4s linear infinite;
}

@media (prefers-reduced-motion: reduce) {
  .avatar-ring {
    animation: none;
    background: linear-gradient(135deg, #60a5fa, #a78bfa);
  }
}

.avatar-img {
  position: absolute;
  inset: 3px;
  border-radius: 50%;
  object-fit: cover;
  z-index: 1;
  width: calc(100% - 6px);
  height: calc(100% - 6px);
}

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

/* ==================== Name Gradient ==================== */
.name-gradient {
  background: linear-gradient(135deg, #60a5fa 0%, #a78bfa 55%, #34d399 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-size: clamp(1.75rem, 4.5vw, 3rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin: 0.2rem 0;
  display: inline-block;
}

.hero-label {
  font-size: 0.8125rem;
  color: var(--text-tertiary);
  font-family: monospace;
  margin: 0;
}

.hero-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  margin: 0.25rem 0 0;
}

/* ==================== Status Badge ==================== */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0.875rem;
  background: rgba(34, 197, 94, 0.08);
  border: 1px solid rgba(34, 197, 94, 0.25);
  border-radius: 9999px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: #16a34a;
  margin-top: 0.875rem;
}

.dark .status-badge {
  background: rgba(34, 197, 94, 0.1);
  color: #4ade80;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22c55e;
  animation: pulse-green 2s ease-in-out infinite;
  flex-shrink: 0;
}

@keyframes pulse-green {
  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.6;
    transform: scale(0.85);
  }
}

/* ==================== Hero CTAs ==================== */
.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
  margin-top: 1.25rem;
}

.btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5rem 1.125rem;
  background: #3b82f6;
  color: #fff;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  transition:
    background var(--transition-fast),
    transform var(--transition-fast);
  min-height: 40px;
}

.btn-cta:hover {
  background: #2563eb;
  color: #fff;
  transform: translateY(-1px);
}

.btn-cta-ghost {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5rem 1.125rem;
  background: transparent;
  color: var(--text-primary);
  border-radius: 0.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid var(--border-strong);
  transition: all var(--transition-fast);
  min-height: 40px;
}

.btn-cta-ghost:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-1px);
}

/* ==================== Stack Pills ==================== */
.stack-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.875rem;
}

.stack-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.25rem 0.625rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border-base);
  border-radius: 0.375rem;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
}

/* ==================== Explore Grid ==================== */
.explore-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
  margin-top: 1rem;
}

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

@media (max-width: 400px) {
  .explore-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.explore-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 0.75rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border-base);
  border-radius: 0.75rem;
  text-decoration: none;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  text-align: center;
}

.explore-item:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-2px);
}

.explore-icon {
  font-size: 1.5rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}
.explore-icon svg {
  width: 1.25rem;
  height: 1.25rem;
}

/* ==================== Work Timeline ==================== */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-top: 0.75rem;
}

.timeline-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.timeline-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #3b82f6;
  flex-shrink: 0;
  margin-top: 5px;
}

.timeline-dot-muted {
  background: var(--border-strong);
}

.timeline-line-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

.timeline-line {
  width: 2px;
  flex: 1;
  background: var(--border-base);
  min-height: 20px;
}

.timeline-body {
  flex: 1;
  padding-bottom: 0.5rem;
}

.timeline-title {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.timeline-sub {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  margin: 0.125rem 0 0;
}

.timeline-badge {
  display: inline-block;
  margin-top: 0.375rem;
  padding: 0.125rem 0.5rem;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.25);
  border-radius: 9999px;
  font-size: 0.6875rem;
  font-weight: 600;
  color: #3b82f6;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* ==================== Page Layout (sub-pages) ==================== */
.page-outer {
  max-width: 960px;
  margin: 0 auto;
  padding: 2rem 1.5rem 5rem;
}

.page-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0;
  font-size: 0.875rem;
  color: var(--text-tertiary);
  margin-bottom: 2rem;
}

.page-breadcrumb a {
  color: var(--text-tertiary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.page-breadcrumb a:hover {
  color: var(--color-primary);
}

.page-breadcrumb-sep {
  padding: 0 0.5rem;
  color: var(--text-tertiary);
}

/* ==================== Site Footer ==================== */
.site-footer {
  border-top: 1px solid var(--border-base);
  margin-top: 4rem;
  padding: 1.75rem 0;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-copy {
  font-size: 0.875rem;
  color: var(--text-tertiary);
  margin: 0;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

.footer-link {
  font-size: 0.875rem;
  color: var(--text-tertiary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--text-primary);
}

/* ==================== Dot Grid Background ==================== */
.dot-grid-bg {
  background-image: radial-gradient(var(--border-base) 1px, transparent 1px);
  background-size: 28px 28px;
}

/* ==================== Location/Info Rows ==================== */
.info-row {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border-base);
}

.info-row:last-child {
  border-bottom: none;
}

.info-icon {
  font-size: 1rem;
  flex-shrink: 0;
  width: 1.5rem;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
}
.info-icon svg {
  width: 0.9rem;
  height: 0.9rem;
}

/* ==================== Bento Card Link Wrapper ==================== */
a.bento-card {
  display: block;
  text-decoration: none;
  color: inherit;
}

a.bento-card:hover {
  color: inherit;
}

/* ==================== Sub-Section Page Layout ==================== */

.page-wrapper {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 5rem;
}

/* Page header icon */
.page-icon-wrap {
  width: 3.5rem;
  height: 3.5rem;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
}
.page-icon {
  width: 1.75rem;
  height: 1.75rem;
  color: #3b82f6;
}

/* Gradient page title */
.page-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  background: linear-gradient(135deg, #60a5fa 0%, #a78bfa 60%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

/* Page subtitle */
.page-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 38rem;
  margin: 0 auto;
  line-height: 1.6;
}

/* Section card - listing pages */
.section-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border-base);
  border-radius: 1rem;
  padding: 1.5rem;
  transition:
    border-color 200ms ease,
    transform 200ms ease,
    box-shadow 200ms ease;
  display: flex;
  flex-direction: column;
  height: 100%;
}
.section-card:hover {
  border-color: rgba(96, 165, 250, 0.4);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}
.dark .section-card:hover {
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

a.section-card {
  text-decoration: none;
  color: inherit;
}
a.section-card:hover {
  color: inherit;
}

.section-card-icon {
  font-size: 1.75rem;
  line-height: 1;
  margin-bottom: 0.75rem;
}
.section-card-icon svg {
  width: 1.5rem;
  height: 1.5rem;
}

.section-card-label {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 0.25rem;
}

.section-card-title {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.375rem;
}

.section-card-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.55;
  flex-grow: 1;
}

.section-card-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  margin-top: 1rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: #3b82f6;
}
.dark .section-card-cta {
  color: #60a5fa;
}

/* Breadcrumb */
.page-breadcrumb {
  display: flex;
  gap: 0;
  font-size: 0.8125rem;
  color: var(--text-tertiary);
  margin-bottom: 2.5rem;
}
.page-breadcrumb a {
  color: var(--text-tertiary);
  text-decoration: none;
}
.page-breadcrumb a:hover {
  color: #60a5fa;
}
.page-breadcrumb span {
  margin: 0 0.375rem;
}

/* Bucket list completed card variant */
.section-card--done {
  border-color: rgba(34, 197, 94, 0.25);
  background: linear-gradient(
    135deg,
    var(--bg-elevated) 70%,
    rgba(34, 197, 94, 0.06)
  );
}
.section-card--done:hover {
  border-color: rgba(34, 197, 94, 0.5);
}

/* ── Code character cursor ───────────────────────────── */
@media (hover: hover) and (pointer: fine) {
  body {
    cursor: none;
  }
  a,
  button,
  [role="button"],
  select,
  label {
    cursor: pointer;
  }
  input,
  textarea {
    cursor: none;
  }
  #cursor-dot {
    position: fixed;
    top: 0;
    left: 0;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: #93c5fd;
    pointer-events: none;
    z-index: 9999;
    opacity: 0;
    transform: translate(-50%, -50%);
    will-change: left, top;
  }
  .code-char {
    position: fixed;
    pointer-events: none;
    z-index: 9998;
    font-family: ui-monospace, monospace;
    font-size: 0.85rem;
    font-weight: 700;
    user-select: none;
    white-space: nowrap;
    transform: translate(-50%, -50%);
    animation: codeCharFade 0.85s ease-out forwards;
  }
  @keyframes codeCharFade {
    0% {
      opacity: 0.9;
      transform: translate(-50%, -50%) scale(1);
    }
    100% {
      opacity: 0;
      transform: translate(calc(-50% + var(--dx)), calc(-50% - 32px)) scale(0.65);
    }
  }
}