/* ===================================================
   Elkeflux Blog Theme — v1.0.0
   Dark / Light mode with CSS custom properties
   Monochrome design matching elkeflux.com branding
   =================================================== */

/* ---------- Light palette (default) ---------- */
:root {
  color-scheme: light dark;

  --accent: #191919;
  --accent-dark: #000000;
  --accent-light: #333333;
  --accent-muted: #6b6b6b;

  --bg: #ffffff;
  --bg-secondary: #f7f7f7;
  --bg-card: #ffffff;
  --bg-code: #f1f5f9;
  --bg-code-block: #1e293b;

  --text: #191919;
  --text-secondary: #4a4a4a;
  --text-muted: #9a9a9a;
  --text-inverse: #ffffff;

  --border: #e5e5e5;
  --border-hover: #cccccc;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, .06);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, .08);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, .10);
  --shadow-card-hover: 0 12px 40px rgba(0, 0, 0, .12);

  --header-bg: rgba(255, 255, 255, .92);
  --footer-bg: #191919;
  --footer-text: #9a9a9a;

  --gradient-card: linear-gradient(135deg, #191919, #4a4a4a);
  --overlay-dim: rgba(0, 0, 0, .5);

  --progress-bg: transparent;
  --progress-fg: var(--accent);

  --transition: .25s ease;
}

/* ---------- Dark palette ---------- */
[data-theme="dark"] {
  --accent: #e5e5e5;
  --accent-dark: #ffffff;
  --accent-light: #cccccc;
  --accent-muted: #9a9a9a;

  --bg: #111111;
  --bg-secondary: #1a1a1a;
  --bg-card: #1a1a1a;
  --bg-code: #2a2a2a;
  --bg-code-block: #0a0a0a;

  --text: #e5e5e5;
  --text-secondary: #9a9a9a;
  --text-muted: #6b6b6b;
  --text-inverse: #111111;

  --border: #2a2a2a;
  --border-hover: #3a3a3a;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, .25);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, .35);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, .45);
  --shadow-card-hover: 0 12px 40px rgba(0, 0, 0, .55);

  --header-bg: rgba(17, 17, 17, .92);
  --footer-bg: #0a0a0a;
  --footer-text: #6b6b6b;

  --gradient-card: linear-gradient(135deg, #2a2a2a, #4a4a4a);
}

/* System preference fallback (no JS) */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --accent: #e5e5e5;
    --accent-dark: #ffffff;
    --accent-light: #cccccc;
    --accent-muted: #9a9a9a;
    --bg: #111111;
    --bg-secondary: #1a1a1a;
    --bg-card: #1a1a1a;
    --bg-code: #2a2a2a;
    --bg-code-block: #0a0a0a;
    --text: #e5e5e5;
    --text-secondary: #9a9a9a;
    --text-muted: #6b6b6b;
    --text-inverse: #111111;
    --border: #2a2a2a;
    --border-hover: #3a3a3a;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, .25);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, .35);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, .45);
    --shadow-card-hover: 0 12px 40px rgba(0, 0, 0, .55);
    --header-bg: rgba(17, 17, 17, .92);
    --footer-bg: #0a0a0a;
    --footer-text: #6b6b6b;
    --gradient-card: linear-gradient(135deg, #2a2a2a, #4a4a4a);
  }
}

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

/* ===== BASE ===== */
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 17px;
  transition: background var(--transition), color var(--transition);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

[data-theme="dark"] a:hover {
  color: var(--accent-light)
}

img {
  max-width: 100%;
  height: auto
}

::selection {
  background: var(--accent);
  color: var(--text-inverse)
}

/* ===== READING PROGRESS ===== */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: var(--progress-fg);
  z-index: 1000;
  transition: width .1s linear
}

/* ===== HEADER ===== */
.site-header {
  background: var(--header-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: background var(--transition), border-color var(--transition)
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 19px;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  transition: color var(--transition)
}

.site-logo svg {
  width: 30px;
  height: 30px;
  color: var(--accent)
}

.site-logo span {
  color: var(--accent)
}

.site-nav {
  display: flex;
  gap: 28px;
  align-items: center
}

.site-nav a {
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  transition: color var(--transition);
  position: relative
}

.site-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width var(--transition)
}

.site-nav a:hover {
  color: var(--accent)
}

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

/* Theme Toggle */
.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 7px;
  cursor: pointer;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  width: 36px;
  height: 36px
}

.theme-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--bg-secondary)
}

.theme-toggle svg {
  width: 18px;
  height: 18px
}

.theme-toggle .icon-moon {
  display: block
}

.theme-toggle .icon-sun {
  display: none
}

[data-theme="dark"] .theme-toggle .icon-moon {
  display: none
}

[data-theme="dark"] .theme-toggle .icon-sun {
  display: block
}

/* Mobile hamburger */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  cursor: pointer;
  padding: 4px
}

.mobile-menu-btn svg {
  width: 24px;
  height: 24px
}

/* ===== MAIN ===== */
.main-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 48px 24px 60px
}

.wide-container {
  max-width: 1200px
}

/* ===== PAGE HEADER ===== */
.page-header {
  text-align: center;
  margin-bottom: 56px
}

.page-header h1 {
  font-size: 38px;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 14px;
  line-height: 1.2;
  letter-spacing: -.02em;
  transition: color var(--transition)
}

.page-header .subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto;
  transition: color var(--transition)
}

/* ===== CARDS GRID ===== */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 28px;
  margin-bottom: 56px
}

.post-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition)
}

.post-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--border-hover)
}

.post-card-image {
  height: 180px;
  background: var(--gradient-card);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden
}

.post-card-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 70%, rgba(255, 255, 255, .06) 0%, transparent 60%)
}

.post-card-image svg {
  width: 56px;
  height: 56px;
  color: rgba(255, 255, 255, .85);
  position: relative;
  z-index: 1
}

.post-card-thumbnail {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.post-card-content {
  padding: 22px 24px 24px
}

.post-card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  font-size: 13px;
  color: var(--text-muted);
  transition: color var(--transition)
}

.post-card-category {
  background: var(--accent);
  color: var(--text-inverse);
  padding: 3px 10px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .04em
}

.post-card h2 {
  font-size: 19px;
  font-weight: 650;
  color: var(--text);
  margin-bottom: 10px;
  line-height: 1.4;
  transition: color var(--transition)
}

.post-card h2 a {
  color: inherit
}

.post-card h2 a:hover {
  color: var(--accent-muted)
}

.post-card p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.6;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color var(--transition)
}

.read-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  font-weight: 600;
  font-size: 13px
}

.read-more svg {
  width: 15px;
  height: 15px;
  transition: transform var(--transition)
}

.read-more:hover svg {
  transform: translateX(4px)
}

.post-card-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap
}

.cinedz-share-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid rgba(229, 9, 20, .18);
  background: rgba(229, 9, 20, .06);
  color: #d82424;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .02em;
  transition: all var(--transition)
}

.cinedz-share-link svg {
  width: 15px;
  height: 15px
}

.cinedz-share-link:hover {
  color: #fff;
  background: linear-gradient(135deg, #e50914, #ff5a3c);
  border-color: transparent;
  box-shadow: 0 8px 20px rgba(229, 9, 20, .22)
}

/* ===== SINGLE POST ===== */
.post-single {
  max-width: 720px;
  margin: 0 auto
}

.back-to-main {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 28px;
  transition: color var(--transition)
}

.back-to-main svg {
  width: 16px;
  height: 16px
}

.back-to-main:hover {
  color: var(--accent)
}

.post-header {
  margin-bottom: 36px
}

.post-header .category {
  display: inline-block;
  background: var(--accent);
  color: var(--text-inverse);
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .04em;
  margin-bottom: 18px
}

.post-header h1 {
  font-size: 36px;
  font-weight: 800;
  color: var(--text);
  line-height: 1.2;
  margin-bottom: 18px;
  letter-spacing: -.02em;
  transition: color var(--transition)
}

.post-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  color: var(--text-muted);
  font-size: 14px;
  transition: color var(--transition)
}

.post-meta span {
  display: inline-flex;
  align-items: center;
  gap: 5px
}

.post-meta svg {
  width: 16px;
  height: 16px
}

/* ===== POST CONTENT ===== */
.post-content {
  font-size: 18px;
  line-height: 1.85;
  color: var(--text);
  transition: color var(--transition)
}

.post-content h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--text);
  margin: 44px 0 18px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  transition: color var(--transition), border-color var(--transition)
}

.post-content h3 {
  font-size: 21px;
  font-weight: 600;
  color: var(--text);
  margin: 36px 0 14px;
  transition: color var(--transition)
}

.post-content h4 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  margin: 28px 0 12px
}

.post-content p {
  margin-bottom: 22px
}

.post-content ul,
.post-content ol {
  margin: 22px 0;
  padding-left: 24px
}

.post-content li {
  margin-bottom: 10px
}

.post-content blockquote {
  border-left: 4px solid var(--accent);
  padding: 18px 24px;
  margin: 28px 0;
  background: var(--bg-secondary);
  border-radius: 0 10px 10px 0;
  font-style: italic;
  color: var(--text-secondary);
  transition: background var(--transition), color var(--transition)
}

.post-content code {
  background: var(--bg-code);
  padding: 2px 7px;
  border-radius: 5px;
  font-family: 'Fira Code', 'JetBrains Mono', 'Monaco', monospace;
  font-size: .88em;
  color: var(--accent);
  transition: background var(--transition)
}

.post-content pre {
  background: var(--bg-code-block);
  color: #e2e8f0;
  padding: 22px;
  border-radius: 10px;
  overflow-x: auto;
  margin: 28px 0;
  border: 1px solid var(--border);
  transition: background var(--transition), border-color var(--transition)
}

.post-content pre code {
  background: none;
  padding: 0;
  color: inherit;
  font-size: .9em
}

.post-content img {
  border-radius: 10px;
  margin: 28px 0;
  box-shadow: var(--shadow-md)
}

.post-content strong {
  color: var(--text);
  font-weight: 650
}

.post-content hr {
  border: none;
  height: 1px;
  background: var(--border);
  margin: 44px 0;
  transition: background var(--transition)
}

/* ===== TAGS ===== */
.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 44px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
  transition: border-color var(--transition)
}

.post-tags a {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  padding: 6px 14px;
  border-radius: 18px;
  font-size: 13px;
  font-weight: 500;
  transition: all var(--transition)
}

.post-tags a:hover {
  background: var(--accent);
  color: var(--text-inverse)
}

/* ===== SOCIAL SHARE ===== */
.share-section {
  margin-top: 36px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  transition: border-color var(--transition)
}

.share-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  transition: color var(--transition);
  user-select: none
}

.share-label svg {
  color: var(--text-muted);
  flex-shrink: 0
}

.share-buttons {
  display: flex;
  gap: 8px;
  flex-wrap: wrap
}

.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  transition: all var(--transition);
  text-decoration: none
}

.share-btn svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0
}

.share-btn:hover {
  transform: translateY(-2px);
  filter: brightness(1.1);
  color: #fff
}

.share-btn:active {
  transform: translateY(0)
}

.share-fb {
  background: #1877f2
}

.share-fb:hover {
  background: #0d6ce8;
  box-shadow: 0 4px 14px rgba(24, 119, 242, .35)
}

.share-x {
  background: #000
}

[data-theme="dark"] .share-x {
  background: #e7e9ea;
  color: #0f1419
}

.share-x:hover {
  background: #1a1a1a;
  box-shadow: 0 4px 14px rgba(0, 0, 0, .35)
}

[data-theme="dark"] .share-x:hover {
  background: #d1d5db;
  color: #0f1419;
  box-shadow: 0 4px 14px rgba(231, 233, 234, .25)
}

.share-li {
  background: #0a66c2
}

.share-li:hover {
  background: #0959ab;
  box-shadow: 0 4px 14px rgba(10, 102, 194, .35)
}

.share-cinedz {
  background: linear-gradient(135deg, #e50914, #ff5a3c)
}

.share-cinedz:hover {
  background: linear-gradient(135deg, #cf0812, #ef4b2c);
  box-shadow: 0 4px 14px rgba(229, 9, 20, .35)
}

.share-reddit {
  background: #ff4500
}

.share-reddit:hover {
  background: #e53d00;
  box-shadow: 0 4px 14px rgba(255, 69, 0, .35)
}

.share-copy {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  cursor: pointer;
  font-family: inherit
}

.share-copy:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--bg-secondary);
  box-shadow: 0 4px 14px rgba(0, 0, 0, .1)
}

.share-copy .icon-check {
  display: none
}

.share-copy.copied .icon-copy {
  display: none
}

.share-copy.copied .icon-check {
  display: block;
  color: var(--accent)
}

.share-copy.copied {
  border-color: var(--accent);
  color: var(--accent)
}

@media(max-width:768px) {
  .share-section {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px
  }

  .share-btn span {
    display: none
  }

  .share-btn {
    padding: 10px 12px;
    border-radius: 10px
  }

  .share-btn svg {
    width: 18px;
    height: 18px
  }

  .post-card-actions {
    align-items: flex-start
  }

  .cinedz-share-link span {
    display: none
  }

  .cinedz-share-link {
    padding: 10px 12px;
    border-radius: 10px
  }
}

/* ===== PAGINATION ===== */
.pagination {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-top: 44px
}

.pagination a,
.pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 14px;
  transition: all var(--transition)
}

.pagination a:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--bg-secondary)
}

.pagination .current {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--text-inverse)
}

/* ===== FOOTER ===== */
.site-footer {
  background: var(--footer-bg);
  color: var(--footer-text);
  padding: 56px 24px;
  margin-top: 0;
  transition: background var(--transition)
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px
}

.footer-brand .site-logo {
  color: #fff !important
}

.footer-brand p {
  margin-top: 14px;
  font-size: 14px;
  line-height: 1.65
}

.footer-column h4 {
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: 18px
}

.footer-column ul {
  list-style: none
}

.footer-column li {
  margin-bottom: 10px
}

.footer-column a {
  color: var(--footer-text);
  font-size: 14px
}

.footer-column a:hover {
  color: #fff
}

.footer-bottom {
  max-width: 1200px;
  margin: 40px auto 0;
  padding-top: 28px;
  border-top: 1px solid rgba(255, 255, 255, .08);
  text-align: center;
  font-size: 13px
}

/* ===== RESPONSIVE ===== */
@media(max-width:768px) {
  .header-inner {
    padding: 12px 16px
  }

  .site-nav {
    position: fixed;
    top: 0;
    right: -280px;
    width: 280px;
    height: 100dvh;
    background: var(--bg);
    border-left: 1px solid var(--border);
    flex-direction: column;
    padding: 72px 28px 28px;
    gap: 0;
    z-index: 200;
    transition: right .3s ease, background var(--transition);
    box-shadow: var(--shadow-lg)
  }

  .site-nav.open {
    right: 0
  }

  .site-nav a {
    font-size: 16px;
    padding: 14px 0;
    border-bottom: 1px solid var(--border);
    width: 100%
  }

  .site-nav a::after {
    display: none
  }

  .mobile-menu-btn {
    display: flex
  }

  .mobile-menu-btn.open .icon-menu {
    display: none
  }

  .mobile-menu-btn.open .icon-close {
    display: block
  }

  .mobile-menu-btn .icon-close {
    display: none
  }

  .mobile-overlay {
    position: fixed;
    inset: 0;
    background: var(--overlay-dim);
    z-index: 199;
    opacity: 0;
    pointer-events: none;
    transition: opacity .3s ease
  }

  .mobile-overlay.open {
    opacity: 1;
    pointer-events: auto
  }

  .page-header h1 {
    font-size: 28px
  }

  .page-header .subtitle {
    font-size: 16px
  }

  .posts-grid {
    grid-template-columns: 1fr;
    gap: 20px
  }

  .post-header h1 {
    font-size: 26px
  }

  .post-content {
    font-size: 16px
  }

  .post-content h2 {
    font-size: 22px
  }

  .main-container {
    padding: 32px 16px 48px
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 28px
  }
}

@media(min-width:769px) {
  .mobile-menu-btn {
    display: none !important
  }

  .mobile-overlay {
    display: none !important
  }
}

/* ===== ACCESSIBILITY ===== */
@media(prefers-reduced-motion:reduce) {

  *,
  *::before,
  *::after {
    transition-duration: .01ms !important
  }

  .reading-progress {
    transition: none !important
  }
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px
}

.skip-link {
  position: absolute;
  top: -40px;
  left: 8px;
  background: var(--accent);
  color: var(--text-inverse);
  padding: 8px 16px;
  border-radius: 0 0 8px 8px;
  font-size: 14px;
  font-weight: 600;
  z-index: 1000;
  transition: top .2s
}

.skip-link:focus {
  top: 0
}