@tailwind base;
@tailwind components;
@tailwind utilities;

/* Base styles - Tailwind only */
@layer base {
  html {
    scroll-behavior: smooth;
  }
  
  body {
    @apply bg-white text-slate-800 font-serif antialiased;
    font-family: 'Georgia', 'Times New Roman', serif;
    line-height: 1.75;
  }
  
  /* Typography */
  h1, h2, h3, h4, h5, h6 {
    @apply font-sans font-bold text-slate-900;
  }

  h1 {
    @apply text-3xl md:text-4xl leading-tight mb-6;
    font-family: 'Inter', sans-serif;
    letter-spacing: -0.025em;
  }

  h2 {
    @apply text-2xl md:text-3xl leading-tight mb-4 mt-8;
    font-family: 'Inter', sans-serif;
    letter-spacing: -0.025em;
  }

  h3 {
    @apply text-xl md:text-2xl leading-tight mb-3 mt-6;
    font-family: 'Inter', sans-serif;
    letter-spacing: -0.025em;
  }

  h4 {
    @apply text-lg md:text-xl leading-tight mb-2 mt-4;
    font-family: 'Inter', sans-serif;
    letter-spacing: -0.025em;
  }

  p {
    @apply mb-4 text-base leading-relaxed text-slate-700;
  }

  .lead {
    @apply text-xl md:text-2xl text-slate-600 mb-6 leading-relaxed;
    font-weight: 400;
  }
  
  a {
    @apply text-slate-900 hover:text-slate-700 transition-colors no-underline;
  }
  
  ul, ol {
    @apply ml-5 mb-4;
  }
  
  li {
    @apply mb-1;
  }
  
  code:not([class*='language-']) {
    @apply bg-slate-100 px-1 py-0.5 rounded font-mono text-sm text-slate-700;
  }
  
  blockquote {
    @apply border-l-2 border-slate-300 pl-4 italic text-slate-600 my-4;
  }
  
  /* Focus states */
  a:focus,
  button:focus,
  input:focus {
    outline: 2px solid #0f172a;
    outline-offset: 2px;
  }
}

/* Components - Tailwind utility classes */
@layer components {
  /* Legacy hooks required by tests */
  .file-example {
    @apply w-full;
  }

  .container {
    @apply max-w-4xl mx-auto px-6 py-10;
  }

  .wide-container {
    @apply max-w-5xl mx-auto px-6 py-12;
  }

  .narrow-container {
    @apply max-w-3xl mx-auto px-6 py-8;
  }

  .highlighter-tag {
    @apply inline-block text-xs font-bold px-2 py-0.5 rounded cursor-pointer transition-all duration-200;
    position: relative;
    transform: rotate(-1deg);
    box-shadow: 2px 2px 0 rgba(0,0,0,0.1);
  }

  .search-box {
    @apply w-full px-4 py-3 border-2 border-slate-200 rounded-lg focus:outline-none focus:border-slate-900 transition-colors;
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(10px);
  }

  .search-box::placeholder {
    @apply text-slate-400;
  }

  /* Blog post card */
  .post-card {
    @apply mb-8 last:mb-0;
  }

  .post-meta {
    @apply text-xs text-slate-500 font-sans mb-2;
  }

  .post-excerpt {
    @apply text-slate-700 mb-2 leading-relaxed;
  }

  .post-tags {
    @apply flex flex-wrap gap-1;
  }

  /* Article page */
  .article-header {
    @apply mb-8;
  }
  
  .article-title {
    @apply text-4xl md:text-5xl font-bold mb-3;
  }
  
  .article-meta {
    @apply text-sm text-slate-500 font-sans mb-5;
  }
  
  .article-content {
    @apply text-lg leading-relaxed;
  }
  
  .article-content p {
    @apply mb-5;
  }
  
  .article-content h2 {
    @apply text-2xl font-bold mt-8 mb-3;
  }
  
  .article-content h3 {
    @apply text-xl font-bold mt-6 mb-2;
  }
  
  .article-content ul,
  .article-content ol {
    @apply ml-6 mb-5;
  }
  
  .article-content li {
    @apply mb-1;
  }
  
  .article-content blockquote {
    @apply border-l-2 border-slate-400 pl-4 italic text-slate-600 my-5 text-lg;
  }

  /* Buttons */
  .btn {
    @apply inline-block px-4 py-2 bg-slate-900 text-white font-sans font-medium hover:bg-slate-700 transition-colors rounded;
  }

  .btn-primary {
    @apply bg-slate-900 hover:bg-slate-800 text-white px-3 py-1.5 rounded transition-colors;
  }

  .btn-secondary {
    @apply bg-white text-slate-700 hover:bg-slate-100 border border-slate-300 px-3 py-1.5 rounded transition-colors;
  }

  /* Hide scrollbars */
  .hide-scrollbar::-webkit-scrollbar {
    display: none;
  }

  .hide-scrollbar {
    -ms-overflow-style: none;
    scrollbar-width: none;
  }

  /* Empty state */
  .empty-state {
    @apply text-center py-8 text-slate-500;
  }

  .empty-state svg {
    @apply mx-auto mb-2 text-slate-300;
  }

  /* Line clamp utility */
  .line-clamp-3 {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  /* Reading progress indicator */
  .reading-progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: #0f172a;
    transform-origin: left;
    transform: scaleX(0);
    z-index: 100;
    transition: transform 0.1s ease-out;
  }

  /* Floating back to top button */
  .floating-back-to-top {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    width: 2.5rem;
    height: 2.5rem;
    background: white;
    border: 1px solid #e2e8f0;
    border-radius: 0.375rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #64748b;
    transition: all 0.15s ease;
    opacity: 0;
    transform: translateY(8px);
  }

  .floating-back-to-top.visible {
    opacity: 1;
    transform: translateY(0);
  }

  .floating-back-to-top:hover {
    background: #f8fafc;
    color: #1e293b;
    transform: translateY(-1px);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  }

  /* Reduced motion support */
  @media (prefers-reduced-motion: reduce) {
    html {
      scroll-behavior: auto;
    }
    
    * {
      animation-duration: 0.01ms !important;
      animation-iteration-count: 1 !important;
      transition-duration: 0.01ms !important;
    }
  }

  /* Print styles */
  @media print {
    .floating-back-to-top,
    .reading-progress-bar {
      display: none !important;
    }
  }
}

/* Additional global styles from BaseLayout */

/* Custom scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 4px;
  transition: background 0.2s ease;
}

::-webkit-scrollbar-thumb:hover {
  background: #94a3b8;
}

/* Selection color */
::selection {
  background: #0f172a;
  color: #ffffff;
}

/* Tag Styles */
.highlighter-tag {
  transform: rotate(-1deg) translateY(0);
  box-shadow: 2px 2px 0 rgba(0, 0, 0, 0.1);
  animation: tagPopIn 0.3s ease-out both;
  animation-delay: calc(var(--tag-index, 0) * 0.05s);
}

.highlighter-tag:hover {
  transform: rotate(-2deg) translateY(-2px) scale(1.05);
  box-shadow: 3px 3px 0 rgba(0, 0, 0, 0.15);
}

@keyframes tagPopIn {
  from {
    opacity: 0;
    transform: rotate(-1deg) scale(0.8) translateY(5px);
  }
  to {
    opacity: 1;
    transform: rotate(-1deg) scale(1) translateY(0);
  }
}

.highlighter-yellow {
  background: linear-gradient(135deg, rgba(255, 235, 59, 0.95) 0%, rgba(255, 213, 79, 0.95) 100%);
  color: #3f2f00;
}

.highlighter-pink {
  background: linear-gradient(135deg, rgba(255, 167, 209, 0.95) 0%, rgba(255, 122, 175, 0.95) 100%);
  color: #3f0018;
}

.highlighter-green {
  background: linear-gradient(135deg, rgba(129, 199, 132, 0.95) 0%, rgba(102, 187, 106, 0.95) 100%);
  color: #002f0a;
}

.highlighter-blue {
  background: linear-gradient(135deg, rgba(226, 232, 240, 0.95) 0%, rgba(203, 213, 225, 0.95) 100%);
  color: #0f172a;
}

.highlighter-tag:hover::before {
  content: '';
  position: absolute;
  inset: -2px;
  background: inherit;
  filter: blur(8px);
  opacity: 0.4;
  z-index: -1;
  border-radius: inherit;
}

.highlighter-tag:active {
  transform: rotate(-1deg) translateY(0) scale(0.98);
  transition: transform 0.1s ease;
}

.highlighter-tag:focus {
  outline: 2px solid #0f172a;
  outline-offset: 2px;
  transform: rotate(-1deg) translateY(-2px) scale(1.05);
  box-shadow: 0 0 0 4px rgba(15, 23, 42, 0.1), 3px 3px 0 rgba(0, 0, 0, 0.15);
}

/* Marker Title Styles */
.marker-title::before {
  content: '';
  position: absolute;
  left: -0.15em;
  right: -0.15em;
  bottom: 0.05em;
  height: 0.62em;
  border-radius: 0.18em;
  z-index: -1;

  background:
    linear-gradient(
      180deg,
      rgba(255, 255, 255, 0) 0%,
      rgba(255, 255, 255, 0) 20%,
      rgba(253, 230, 138, 0.70) 20%,
      rgba(253, 230, 138, 0.70) 100%
    );

  transform-origin: left center;
  transform:
    rotate(calc((var(--marker-seed, 0) - 3) * 0.45deg))
    skewX(calc((var(--marker-seed, 0) - 3) * -0.25deg));

  filter: saturate(1.05);
}

.marker-title::after {
  content: '';
  position: absolute;
  left: -0.18em;
  right: -0.05em;
  bottom: 0.05em;
  height: 0.62em;
  border-radius: 0.18em;
  z-index: -1;

  background:
    linear-gradient(
      90deg,
      rgba(253, 230, 138, 0.00) 0%,
      rgba(253, 230, 138, 0.60) 8%,
      rgba(253, 230, 138, 0.55) 60%,
      rgba(253, 230, 138, 0.35) 100%
    );

  opacity: 0.75;
  mix-blend-mode: multiply;
  transform:
    rotate(calc((var(--marker-seed, 0) - 3) * 0.45deg))
    translateY(0.02em);

  mask-image:
    linear-gradient(
      180deg,
      rgba(0, 0, 0, 0) 0%,
      rgba(0, 0, 0, 1) 20%,
      rgba(0, 0, 0, 1) 100%
    );
}

@media (prefers-reduced-motion: no-preference) {
  .post-link:hover .marker-title::before,
  .post-link:hover .marker-title::after {
    filter: saturate(1.08) contrast(1.02);
  }
}

/* Mermaid Styles */
.mermaid-container svg {
  width: 100% !important;
  max-width: 100%;
  height: auto;
  display: block;
  background-color: transparent !important;
}

.mermaid-container rect,
.mermaid-container circle,
.mermaid-container ellipse,
.mermaid-container polygon,
.mermaid-container path,
.mermaid-container .actor,
.mermaid-container .node {
  fill: white !important;
  stroke: #cbd5e1 !important;
  stroke-width: 1.5px !important;
}

.mermaid-container .edgePath .path,
.mermaid-container .messageLine0,
.mermaid-container .messageLine1,
.mermaid-container .flowchart-link {
  stroke: #cbd5e1 !important;
  stroke-width: 1.5px !important;
}

.mermaid-container text,
.mermaid-container .label,
.mermaid-container .labelText,
.mermaid-container .edgeLabel,
.mermaid-container .node text,
.mermaid-container tspan {
  font-family: 'Inter', sans-serif !important;
  fill: #334155 !important;
  color: #334155 !important;
  stroke: none !important;
  font-size: 16px !important;
}

.mermaid-container .marker,
.mermaid-container marker path {
  fill: #cbd5e1 !important;
  stroke: #cbd5e1 !important;
}

/* Generic Embed Styles */
.generic-embed {
  --max-width: 100%;
  --border-radius: 8px;
  --bg-color: #ffffff;
  --border-color: #e2e8f0;
  --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  
  margin: 1.5rem 0;
  width: 100%;
  max-width: var(--max-width);
}

.embed-wrapper {
  border-radius: var(--border-radius);
  border: 1px solid var(--border-color);
  background: var(--bg-color);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: all 0.2s ease;
  position: relative;
}

.generic-embed[data-type="video"] .embed-wrapper {
  aspect-ratio: 16/9;
  height: 0;
  padding-bottom: 56.25%; /* 16:9 */
}

.generic-embed[data-type="video"] .embed-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.embed-wrapper:hover {
  box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  border-color: #cbd5e1;
}

.generic-embed[data-provider="youtube.com"] {
  --bg-color: #000000;
}

.generic-embed[data-provider="vimeo.com"] {
  --bg-color: #1a1a1a;
}

.generic-embed[data-provider="codepen.io"] {
  --bg-color: #1e1e1e;
  --border-color: #333;
}

.embed-fallback {
  padding: 1.5rem;
  background: #f8fafc;
  border: 1px dashed #cbd5e1;
  border-radius: var(--border-radius);
  text-align: center;
}

.fallback-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: #64748b;
  font-size: 0.875rem;
}

.fallback-link {
  @apply text-slate-900 underline underline-offset-4;
  text-decoration: none;
  font-weight: 500;
  margin-top: 0.25rem;
  word-break: break-all;
}

.fallback-link:hover {
  text-decoration: underline;
}

@media (max-width: 768px) {
  .generic-embed {
    margin: 1rem 0;
  }
  
  .embed-fallback {
    padding: 1rem;
  }
  
  .embed-wrapper:hover {
    box-shadow: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  }
}

/* File Example Styles */
[data-file-example] {
  box-shadow: 0 1px 0 rgba(15, 23, 42, 0.04);
}

.copy-btn,
.download-btn {
  color: #475569;
}

.copy-btn[data-copied='true'] {
  color: #065f46;
  background: rgba(16, 185, 129, 0.10);
  border-color: rgba(16, 185, 129, 0.35);
}

/* Prism.js syntax highlighting - light, low-noise */
code[class*='language-'],
pre[class*='language-'],
pre:has(code[class*='language-']) {
  color: #0f172a;
  background: transparent;
  text-shadow: none;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace;
  font-size: 0.8125rem;
  line-height: 1.65;
  direction: ltr;
  text-align: left;
  white-space: pre;
  word-spacing: normal;
  word-break: normal;
  tab-size: 2;
  hyphens: none;
}

.token.comment,
.token.prolog,
.token.doctype,
.token.cdata {
  color: #64748b;
  font-style: italic;
}

.token.punctuation {
  color: #94a3b8;
}

.token.operator {
  color: #64748b;
}

.token.property,
.token.tag,
.token.constant,
.token.symbol,
.token.deleted {
  color: #c2410c;
}

.token.boolean,
.token.number {
  color: #a16207;
}

.token.selector,
.token.attr-name,
.token.string,
.token.char,
.token.builtin,
.token.inserted {
  color: #059669;
}

.token.operator,
.token.entity,
.token.url,
.language-css .token.string,
.style .token.string {
  color: #475569;
}

.token.atrule,
.token.attr-value,
.token.keyword {
  color: #7c3aed;
  font-weight: 500;
}

.token.function,
.token.class-name {
  color: #2563eb;
}

.token.regex,
.token.important,
.token.variable {
  color: #db2777;
}