/* ===========================================
   apple.css — Apple Design Language Override
   =========================================== */

/* --- Tokens --- */
:root {
  --color-canvas:       #ffffff;
  --color-parchment:    #f5f5f7;
  --color-tile-dark:    #272729;
  --color-tile-dark-2:  #2a2a2c;
  --color-nav-black:    #000000;
  --color-ink:          #1d1d1f;
  --color-muted:        #6e6e73;
  --color-on-dark:      #ffffff;
  --color-muted-dark:   #cccccc;
  --color-primary:      #0066cc;
  --color-primary-dark: #2997ff;
  --color-hairline:     #e0e0e0;
  --spacing-section:    80px;
  --spacing-card:       24px;
  /* Override Bootstrap variables */
  --bs-card-box-shadow: none;
  --bs-border-color:    #e0e0e0;
  --bs-body-bg:         #ffffff;
  --bs-body-color:      #1d1d1f;
}

/* --- Base reset (override Bootstrap dark theme) --- */
html, body {
  background-color: var(--color-canvas) !important;
  color: var(--color-ink) !important;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 17px;
  font-weight: 400;
  line-height: 1.47;
  letter-spacing: -0.374px;
  background: var(--color-canvas) !important;
  background-image: none !important;
}

/* --- Global Nav --- */
.navbar {
  background: var(--color-nav-black) !important;
  height: 44px;
  padding: 0 !important;
  border-bottom: none !important;
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
}

.navbar .container {
  height: 44px;
}

.navbar-brand {
  color: rgba(255,255,255,0.9) !important;
  font-size: 14px !important;
  font-weight: 400 !important;
  letter-spacing: -0.12px;
  padding: 0 !important;
  line-height: 44px;
}

/* Hide the old gradient logo icon */
.navbar-brand .logo-icon {
  display: none !important;
}

.navbar-nav .nav-link {
  color: rgba(255,255,255,0.85) !important;
  font-size: 12px !important;
  font-weight: 400 !important;
  letter-spacing: -0.12px;
  padding: 0 10px !important;
  line-height: 44px;
  border-radius: 0 !important;
  margin: 0 !important;
  background: none !important;
  border: none !important;
}

.navbar-nav .nav-link:hover {
  color: #fff !important;
  background: none !important;
}

.navbar-nav .nav-link.active {
  color: #fff !important;
  background: none !important;
  border: none !important;
}

.navbar-toggler {
  border-color: rgba(255,255,255,0.3) !important;
  padding: 4px 8px;
}

.navbar-toggler-icon {
  filter: invert(1);
}

/* Hamburger menu dropdown on dark */
.navbar-collapse {
  background: var(--color-nav-black);
  padding: 8px 0;
}

/* --- Reading Progress Bar --- */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: var(--color-primary);
  z-index: 1001;
  transition: width 0.1s;
}

/* --- Tile System --- */
.tile-white {
  background: var(--color-canvas);
  padding: var(--spacing-section) 0;
  color: var(--color-ink);
}

.tile-parchment {
  background: var(--color-parchment);
  padding: var(--spacing-section) 0;
  color: var(--color-ink);
}

.tile-dark {
  background: var(--color-tile-dark);
  padding: var(--spacing-section) 0;
  color: var(--color-on-dark);
}

.tile-dark-2 {
  background: var(--color-tile-dark-2);
  padding: var(--spacing-section) 0;
  color: var(--color-on-dark);
}

.tile-inner {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 22px;
}

/* --- Typography --- */
.hero-display {
  font-size: 56px;
  font-weight: 600;
  line-height: 1.07;
  letter-spacing: -0.28px;
  color: var(--color-ink);
  margin-bottom: 12px;
}

.display-lg {
  font-size: 40px;
  font-weight: 600;
  line-height: 1.10;
  letter-spacing: 0;
  color: var(--color-ink);
  margin-bottom: 12px;
}

.display-lg-dark {
  font-size: 40px;
  font-weight: 600;
  line-height: 1.10;
  letter-spacing: 0;
  color: var(--color-on-dark);
  margin-bottom: 12px;
}

.lead-text {
  font-size: 21px;
  font-weight: 400;
  line-height: 1.14;
  letter-spacing: 0;
  color: var(--color-ink);
  margin-bottom: 24px;
}

.lead-text-dark {
  font-size: 21px;
  font-weight: 400;
  line-height: 1.14;
  letter-spacing: 0;
  color: var(--color-muted-dark);
  margin-bottom: 24px;
}

.caption-text {
  font-size: 14px;
  font-weight: 400;
  line-height: 1.43;
  letter-spacing: -0.224px;
  color: var(--color-muted);
}

/* --- Buttons --- */
.btn-apple-primary {
  display: inline-block;
  background: var(--color-primary);
  color: #fff !important;
  font-size: 17px;
  font-weight: 400;
  letter-spacing: -0.374px;
  padding: 11px 22px;
  border-radius: 9999px;
  text-decoration: none !important;
  border: none;
  cursor: pointer;
  transition: transform 0.1s;
}

.btn-apple-primary:active {
  transform: scale(0.95);
}

.btn-apple-ghost {
  display: inline-block;
  background: transparent;
  color: var(--color-primary) !important;
  font-size: 17px;
  font-weight: 400;
  letter-spacing: -0.374px;
  padding: 11px 22px;
  border-radius: 9999px;
  text-decoration: none !important;
  border: 1px solid var(--color-primary);
  cursor: pointer;
  transition: transform 0.1s;
}

.btn-apple-ghost:active {
  transform: scale(0.95);
}

.btn-apple-primary:focus-visible,
.btn-apple-ghost:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

.btn-row {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* --- Blog Cards (used on parchment tiles) --- */
.blog-card {
  display: block;
  background: var(--color-canvas) !important;
  border: 1px solid var(--color-hairline) !important;
  border-radius: 18px;
  padding: var(--spacing-card);
  text-decoration: none !important;
  color: var(--color-ink) !important;
  height: 100%;
}

/* Remove old dark hover effects */
.blog-card::before { display: none !important; }

.blog-card:hover {
  transform: none;
  box-shadow: none !important;
  border-color: var(--color-hairline) !important;
}

.blog-card .blog-tag {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 8px;
}

.blog-card h3 {
  font-size: 17px !important;
  font-weight: 600;
  letter-spacing: -0.374px;
  color: var(--color-ink) !important;
  line-height: 1.24;
  margin: 0 0 8px 0;
}

.blog-card p {
  font-size: 14px;
  color: var(--color-muted) !important;
  line-height: 1.43;
  letter-spacing: -0.224px;
  margin-bottom: 0;
}

.blog-card .card-link {
  color: var(--color-primary);
  font-size: 14px;
  letter-spacing: -0.224px;
  text-decoration: none;
  margin-top: 12px;
  display: block;
}

.blog-meta {
  font-size: 12px;
  color: var(--color-muted);
  margin-top: 12px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* --- Tags --- */
.tag {
  background: rgba(0,102,204,0.08);
  color: var(--color-primary);
  padding: 2px 10px;
  border-radius: 9999px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.3px;
  border: none !important;
  background-image: none !important;
}

/* --- Skill Chips (dark tile) --- */
.skill-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-top: 24px;
}

.skill-chip {
  background: rgba(255,255,255,0.08);
  color: var(--color-on-dark);
  font-size: 14px;
  font-weight: 400;
  letter-spacing: -0.224px;
  padding: 8px 18px;
  border-radius: 9999px;
  border: 1px solid rgba(255,255,255,0.12);
}

/* --- About Photo --- */
.about-photo {
  width: 150px;
  height: 150px;
  object-fit: cover;
}

/* --- About Page Section Cards --- */
.about-section-card {
  background: var(--color-canvas);
  border: 1px solid var(--color-hairline);
  border-radius: 18px;
  padding: 32px;
  margin-bottom: 20px;
}

.about-section-card h3 {
  font-size: 21px;
  font-weight: 600;
  letter-spacing: -0.374px;
  color: var(--color-ink);
  margin-top: 0;
  margin-bottom: 16px;
}

.about-section-card p,
.about-section-card li {
  font-size: 17px;
  color: var(--color-ink);
  line-height: 1.47;
  letter-spacing: -0.374px;
}

.about-section-card a {
  color: var(--color-primary);
  text-decoration: none;
}

/* Override old dark timeline */
.timeline-item {
  border-left: 2px solid var(--color-hairline) !important;
  padding-left: 20px;
  margin: 16px 0;
  position: relative;
}

.timeline-item::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--color-primary) !important;
  border-radius: 50%;
  position: absolute;
  left: -5px;
  top: 6px;
}

/* Override old gradient skill badges on about page */
.skill-badge {
  background: rgba(0,102,204,0.08) !important;
  background-image: none !important;
  color: var(--color-primary) !important;
  padding: 6px 14px;
  border-radius: 9999px;
  margin: 4px;
  display: inline-block;
  font-size: 14px;
  font-weight: 400;
  border: 1px solid rgba(0,102,204,0.2) !important;
}

/* --- Article body (blog posts) --- */
.article-body {
  max-width: 700px;
  margin: 0 auto;
  font-size: 17px;
  line-height: 1.47;
  letter-spacing: -0.374px;
  color: var(--color-ink);
  padding: 0 22px 80px;
}

.article-body h1 {
  font-size: 40px;
  font-weight: 600;
  letter-spacing: 0;
  color: var(--color-ink) !important;
  background: none !important;
  -webkit-background-clip: unset !important;
  -webkit-text-fill-color: var(--color-ink) !important;
  background-clip: unset !important;
  margin-top: 0;
  margin-bottom: 12px;
}

.article-body h2 {
  font-size: 28px;
  font-weight: 600;
  letter-spacing: -0.374px;
  color: var(--color-ink);
  border-bottom: 1px solid var(--color-hairline);
  padding-bottom: 8px;
  margin-top: 40px;
  margin-bottom: 16px;
}

.article-body h3 {
  font-size: 21px;
  font-weight: 600;
  letter-spacing: -0.374px;
  color: var(--color-ink);
  margin-top: 32px;
  margin-bottom: 12px;
}

.article-body p { margin-bottom: 20px; }

.article-body a {
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: none !important;
}

.article-body a:hover { text-decoration: underline; }

.article-body ul,
.article-body ol {
  margin-bottom: 20px;
  padding-left: 24px;
}

.article-body li { margin-bottom: 8px; }

.article-body strong {
  font-weight: 600;
  color: var(--color-ink);
}

/* Code blocks */
.article-body pre {
  background: var(--color-parchment) !important;
  border: 1px solid var(--color-hairline);
  border-radius: 12px;
  padding: 20px !important;
  overflow-x: auto;
  margin: 24px 0;
}

.article-body code {
  font-family: 'JetBrains Mono', 'Fira Code', Consolas, monospace;
  font-size: 14px;
}

.article-body p code,
.article-body li code {
  background: rgba(0,0,0,0.05) !important;
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--color-ink) !important;
  border: none !important;
  font-size: 14px;
}

/* Command blocks */
.article-body .command,
.command {
  background: var(--color-parchment) !important;
  background-image: none !important;
  border-left: 3px solid var(--color-primary);
  padding: 14px 20px;
  border-radius: 0 12px 12px 0;
  margin: 16px 0;
  font-family: 'JetBrains Mono', Consolas, monospace;
  font-size: 14px;
  overflow-x: auto;
  color: var(--color-ink) !important;
}

.article-body .command::before,
.command::before {
  content: '$ ';
  color: var(--color-primary);
  font-weight: 600;
}

.article-body .command strong,
.command strong {
  color: var(--color-ink) !important;
}

/* Article meta bar */
.article-meta {
  background: var(--color-parchment) !important;
  border: 1px solid var(--color-hairline) !important;
  border-radius: 12px;
  padding: 14px 20px;
  display: flex;
  gap: 20px;
  color: var(--color-muted);
  font-size: 14px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.article-meta span {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Table of contents */
.toc {
  background: var(--color-parchment) !important;
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 32px;
  border: 1px solid var(--color-hairline) !important;
}

.toc h4 {
  margin-top: 0;
  margin-bottom: 12px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-muted);
}

.toc ul { margin: 0; padding-left: 18px; }

.toc a {
  border: none !important;
  color: var(--color-primary) !important;
  font-size: 14px;
  text-decoration: none;
}

/* Alert boxes — light theme */
.alert-info {
  background: rgba(0,102,204,0.06) !important;
  border: 1px solid rgba(0,102,204,0.2) !important;
  border-radius: 12px;
  color: var(--color-ink);
}

.alert-warning {
  background: rgba(255,193,7,0.08) !important;
  border: 1px solid rgba(255,193,7,0.3) !important;
  border-radius: 12px;
  color: var(--color-ink);
}

/* Step number badge (numbered steps in blog posts) */
.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--color-primary);
  border-radius: 50%;
  color: #fff;
  font-weight: 700;
  font-size: 0.85rem;
  margin-right: 10px;
  flex-shrink: 0;
}

/* Config file block (linux clash page) */
.config-file {
  background: var(--color-parchment) !important;
  border: 1px solid var(--color-hairline);
  border-radius: 12px;
  padding: 16px 20px;
  margin: 16px 0;
}

.config-file .filename {
  color: var(--color-primary) !important;
  font-size: 13px;
  margin-bottom: 10px;
  font-family: 'JetBrains Mono', Consolas, monospace;
}

/* --- Footer --- */
.site-footer {
  background: var(--color-parchment);
  border-top: 1px solid var(--color-hairline);
  padding: 40px 22px;
  color: var(--color-muted);
}

.footer-inner {
  max-width: 980px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.site-footer a {
  color: var(--color-primary);
  text-decoration: none;
  font-size: 14px;
  letter-spacing: -0.224px;
}

.footer-legal {
  font-size: 12px;
  color: var(--color-muted);
  letter-spacing: -0.12px;
  margin: 0;
}

/* --- Back to top --- */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-ink);
  color: white;
  border: none;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.3s;
  z-index: 1000;
  font-size: 16px;
  box-shadow: none !important;
  display: flex;
  align-items: center;
  justify-content: center;
}

.back-to-top.visible { opacity: 1; }

/* --- Override lingering Bootstrap/dark remnants --- */
.gradient-text {
  background: none !important;
  -webkit-background-clip: unset !important;
  -webkit-text-fill-color: var(--color-ink) !important;
  background-clip: unset !important;
  color: var(--color-ink) !important;
}

.gradient-separator { display: none; }

/* Bootstrap card overrides */
.card {
  background: var(--color-canvas) !important;
  border-color: var(--color-hairline) !important;
}

/* Links outside article-body */
body a:not([class]) { color: var(--color-primary); }

/* Bootstrap text-muted override */
.text-muted { color: var(--color-muted) !important; }

/* --- Responsive --- */
@media (max-width: 640px) {
  .tile-white,
  .tile-parchment,
  .tile-dark,
  .tile-dark-2 {
    padding: 48px 0;
  }

  .hero-display { font-size: 34px; }

  .display-lg,
  .display-lg-dark { font-size: 28px; }

  .btn-apple-primary,
  .btn-apple-ghost {
    font-size: 15px;
    padding: 10px 18px;
  }

  .article-body { padding: 0 16px 48px; }
}

@media (max-width: 833px) {
  .navbar-collapse {
    padding: 8px 16px 16px;
  }

  .navbar-nav .nav-link {
    line-height: 2.2;
    padding: 0 !important;
  }
}