/* 
  MINIMAL EDITORIAL DESIGN
  Inspired by Japanese wabi-sabi aesthetics
  Clean list-based layout with elegant typography
*/

:root {
  /* Typography - Distinctive & Refined */
  --font-display: 'Libre Baskerville', Georgia, serif;
  --font-body: 'Atkinson Hyperlegible', 'Noto Sans Myanmar', system-ui, sans-serif;

  /* Color Palette - Warm & Earthy */
  --color-cream: #FAF7F2;
  --color-linen: #F5F0E8;
  --color-charcoal: #2C2C2C;
  --color-stone: #5A5A5A;
  --color-terracotta: #C84B31;
  --color-terracotta-soft: rgba(200, 75, 49, 0.12);
  --color-terracotta-glow: rgba(200, 75, 49, 0.25);
  --color-divider: #E5DED5;

  /* Light Theme (Default) */
  --bg-body: var(--color-cream);
  --bg-surface: #FFFFFF;
  --text-primary: var(--color-charcoal);
  --text-secondary: var(--color-stone);
  --accent: var(--color-terracotta);
  --divider: var(--color-divider);

  /* Layout */
  --container-max: 720px;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 6rem;

  /* Animation */
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 0.2s;
  --duration-medium: 0.5s;
}

/* Dark Theme */
[data-theme="dark"] {
  --bg-body: #1A1918;
  --bg-surface: #242220;
  --text-primary: #F0EDE8;
  --text-secondary: #A8A29E;
  --accent: #E07B5F;
  --divider: #3D3A36;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg-body: #1A1918;
    --bg-surface: #242220;
    --text-primary: #F0EDE8;
    --text-secondary: #A8A29E;
    --accent: #E07B5F;
    --divider: #3D3A36;
  }
}

/* Reset */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-body);
  background-color: var(--bg-body);
  color: var(--text-primary);
  line-height: 1.7;
  font-size: 1rem;
  transition: background-color var(--duration-medium) var(--ease-out-expo),
    color var(--duration-medium) var(--ease-out-expo);
  min-height: 100vh;
}

/* Container */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* Links */
a {
  color: inherit;
  text-decoration: none;
  transition: color var(--duration-fast) ease;
}

a:hover {
  color: var(--accent);
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

/* ========================================
   HEADER
======================================== */
header {
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--divider);
}

body.page-post header {
  position: relative;
  border-bottom: none;
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--text-primary);
  letter-spacing: 0.02em;
  transition: opacity var(--duration-fast) ease;
}

.logo::before {
  display: none;
}

.logo:hover {
  opacity: 0.7;
  color: var(--text-primary);
}

.nav-links {
  display: flex;
  gap: var(--space-md);
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  position: relative;
  padding: 0.25rem 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width 0.4s var(--ease-out-expo);
}

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

.nav-links a:hover::after {
  width: 100%;
}

.controls button {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-secondary);
  padding: 0.5rem;
  transition: color var(--duration-fast) ease;
}

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

/* ========================================
   MAIN CONTENT
======================================== */
.main-content {
  padding: var(--space-lg) 0;
}

/* ========================================
   HERO - Minimal & Elegant
======================================== */
.hero {
  text-align: left;
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--divider);
  opacity: 0;
  animation: fadeReveal 0.8s var(--ease-out-expo) forwards;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 400;
  margin-bottom: var(--space-sm);
  color: var(--text-primary);
}

.hero p {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 480px;
}

/* ========================================
   SEARCH & FILTER - Refined
======================================== */
.search-filter-section {
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--divider);
}

.search-container {
  margin-bottom: var(--space-md);
  position: relative;
}

.search-results {
  display: none;
  flex-direction: column;
  gap: 0;
}

.search-input {
  width: 100%;
  padding: 1rem 0;
  border: none;
  border-bottom: 1px solid var(--divider);
  background: transparent;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: border-color var(--duration-fast) ease;
}

.search-input::placeholder {
  color: var(--text-secondary);
  opacity: 0.7;
}

.search-input:focus {
  outline: none;
  border-color: var(--accent);
}

.filter-container {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-bottom: 0;
}

.filter-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  padding: 0.5rem 0;
  cursor: pointer;
  font-size: 0.875rem;
  font-family: var(--font-body);
  letter-spacing: 0.03em;
  transition: color var(--duration-fast) ease;
  position: relative;
}

.filter-btn::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width 0.3s var(--ease-out-expo);
}

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

.filter-btn.active {
  color: var(--accent);
}

.filter-btn.active::after {
  width: 100%;
}

/* Separator between filter buttons */
.filter-btn:not(:last-child)::before {
  content: '';
  position: absolute;
  right: calc(var(--space-sm) / -2);
  top: 50%;
  transform: translateY(-50%);
  width: 1px;
  height: 12px;
  background: var(--divider);
}

/* ========================================
   POST LIST - Editorial Style
======================================== */
.posts-grid {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.post-card {
  display: block;
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--divider);
  background: transparent;
  transition: background-color var(--duration-fast) ease;
  opacity: 0;
  animation: slideReveal 0.6s var(--ease-out-expo) forwards;
}

/* Staggered animations */
.post-card:nth-child(1) {
  animation-delay: 0.1s;
}

.post-card:nth-child(2) {
  animation-delay: 0.15s;
}

.post-card:nth-child(3) {
  animation-delay: 0.2s;
}

.post-card:nth-child(4) {
  animation-delay: 0.25s;
}

.post-card:nth-child(5) {
  animation-delay: 0.3s;
}

.post-card:nth-child(6) {
  animation-delay: 0.35s;
}

.post-card:nth-child(7) {
  animation-delay: 0.4s;
}

.post-card:last-child {
  border-bottom: none;
}

.post-card:hover {
  background-color: var(--bg-surface);
  margin-left: calc(var(--space-sm) * -1);
  margin-right: calc(var(--space-sm) * -1);
  padding-left: var(--space-sm);
  padding-right: var(--space-sm);
  border-radius: 4px;
}

.post-card a {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-md);
  align-items: start;
}

.post-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.post-meta {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.75rem;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.category-badge {
  color: var(--accent);
  font-weight: 400;
  background: none;
  border: none;
  padding: 0;
}

.post-title {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 400;
  line-height: 1.3;
  color: var(--text-primary);
  margin: 0;
  transition: color var(--duration-fast) ease;
}

.post-card:hover .post-title {
  color: var(--accent);
}

.post-excerpt {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
}

/* Post card image - smaller, positioned to the right */
.post-card-image {
  width: 100px;
  height: 70px;
  object-fit: cover;
  border-radius: 4px;
  opacity: 0.9;
  transition: opacity var(--duration-fast) ease;
}

.post-card:hover .post-card-image {
  opacity: 1;
}

/* ========================================
   ARTICLE PAGE
======================================== */
.article-header {
  text-align: left;
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--divider);
  opacity: 0;
  animation: fadeReveal 0.6s var(--ease-out-expo) forwards;
}

.article-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 400;
  margin-bottom: var(--space-sm);
  color: var(--text-primary);
  line-height: 1.2;
}

.article-meta {
  font-size: 0.875rem;
  color: var(--text-secondary);
  display: flex;
  gap: var(--space-md);
  letter-spacing: 0.03em;
}

.article-content {
  max-width: 100%;
  font-size: 1.0625rem;
  line-height: 1.8;
  opacity: 0;
  animation: fadeReveal 0.6s var(--ease-out-expo) 0.15s forwards;
}

.article-content p {
  margin-bottom: var(--space-md);
}

.article-content h2 {
  font-size: 1.5rem;
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
  color: var(--text-primary);
  padding-top: var(--space-sm);
  border-top: 1px solid var(--divider);
}

.article-content h2::after {
  display: none;
}

.article-content ul,
.article-content ol {
  margin-bottom: var(--space-md);
  padding-left: var(--space-md);
}

.article-content li {
  margin-bottom: var(--space-sm);
}

.article-content hr {
  margin: var(--space-lg) 0;
  border: none;
  border-top: 1px solid var(--divider);
}

.article-content h3 {
  font-size: 1.25rem;
  margin-top: var(--space-xs);
  margin-bottom: var(--space-xs);
  color: var(--text-primary);
  font-weight: 500;
}

.article-content img {
  width: 100%;
  border-radius: 4px;
  margin: var(--space-md) 0;
}

.article-content a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-color: var(--color-terracotta-soft);
  text-underline-offset: 2px;
  transition: text-decoration-color var(--duration-fast) ease;
}

.article-content a:hover {
  text-decoration-color: var(--accent);
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-md) 0;
  font-size: 0.9375rem;
}

.article-content th,
.article-content td {
  padding: 0.75rem 0.5rem;
  border-bottom: 1px solid var(--divider);
  text-align: left;
}

.article-content th {
  font-weight: 700;
  color: var(--text-primary);
  border-bottom: 2px solid var(--divider);
}

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

/* ========================================
   FOOTER - Minimal
======================================== */
footer {
  margin-top: var(--space-xl);
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--divider);
  background: transparent;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  gap: var(--space-lg);
}

.footer-content h3 {
  font-size: 1rem;
  font-family: var(--font-body);
  font-weight: 400;
  margin-bottom: var(--space-xs);
}

.footer-content h4 {
  font-size: 0.75rem;
  font-family: var(--font-body);
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: var(--space-xs);
}

.footer-content p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  max-width: 320px;
}

.social-links a {
  font-size: 0.875rem;
  color: var(--text-secondary);
  display: inline-block;
  margin-right: var(--space-sm);
}

.social-links a:hover {
  color: var(--accent);
}

.footer-bottom {
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--divider);
  font-size: 0.8125rem;
  color: var(--text-secondary);
  text-align: center;
}

/* ========================================
   PAGINATION
======================================== */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-md);
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid var(--divider);
}

.page-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  background: transparent;
  border: 1px solid var(--divider);
  border-radius: 4px;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.875rem;
  cursor: pointer;
  transition: all var(--duration-fast) ease;
  text-decoration: none;
}

.page-btn:hover:not(.disabled) {
  background: var(--bg-surface);
  border-color: var(--accent);
  color: var(--accent);
}

.page-btn.disabled {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}

.page-btn svg {
  width: 14px;
  height: 14px;
}

.page-info {
  font-size: 0.875rem;
  color: var(--text-secondary);
  font-variant-numeric: tabular-nums;
  min-width: 60px;
  text-align: center;
}

/* ========================================
   NO RESULTS
======================================== */
.no-results {
  text-align: center;
  color: var(--text-secondary);
  padding: var(--space-lg) var(--space-md);
  font-style: italic;
}

/* ========================================
   ANIMATIONS
======================================== */
@keyframes fadeReveal {
  from {
    opacity: 0;
    transform: translateY(12px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideReveal {
  from {
    opacity: 0;
    transform: translateX(-8px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Keep legacy animation name for compatibility */
@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-12px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ========================================
   NO RESULTS
======================================== */
#noResults {
  text-align: center;
  color: var(--text-secondary);
  padding: var(--space-lg);
  font-style: italic;
}

/* ========================================
   RESPONSIVE
======================================== */
@media (max-width: 640px) {
  .header-container {
    flex-wrap: wrap;
    gap: var(--space-sm);
  }

  .nav-links {
    order: 3;
    width: 100%;
    justify-content: flex-start;
    gap: var(--space-md);
    padding-top: var(--space-sm);
  }

  .filter-btn:not(:last-child)::before {
    display: none;
  }

  .filter-container {
    gap: var(--space-xs);
  }

  .filter-btn {
    padding: 0.5rem var(--space-sm);
    background: var(--bg-surface);
    border-radius: 4px;
  }

  .post-card a {
    grid-template-columns: 1fr;
  }

  .post-card-image {
    width: 100%;
    height: 180px;
    margin-top: var(--space-sm);
  }

  .footer-content {
    flex-direction: column;
  }
}