/* ============================================
   Lixeek's Art Blog - Sunset Theme
   ============================================ */

:root {
  /* Backgrounds */
  --bg-primary: #1a1014;
  --bg-secondary: #241a1e;
  --bg-card: #2d1f24;
  --bg-card-hover: #3a272e;

  /* Text */
  --text-primary: #f0e6e0;
  --text-secondary: #c0a898;
  --text-muted: #8a7068;

  /* Accent */
  --accent: #e8711a;
  --accent-hover: #f0912e;
  --accent-dim: #6b3510;
  --accent-glow: rgba(232, 113, 26, 0.15);

  /* Borders */
  --border: #3d2a30;

  /* Header gradient */
  --header-start: #e8711a;
  --header-end: #2a1528;

  /* Typography */
  --font-body: 'Segoe UI', system-ui, -apple-system, sans-serif;

  /* Layout */
  --max-width: 1200px;
  --content-width: 800px;

  /* Shape */
  --radius: 6px;
  --radius-lg: 10px;
  --transition: 0.2s ease;
}

/* ---- Reset & Base ---- */

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

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

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

/* ---- Skip Link ---- */

.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  background: var(--accent);
  color: #fff;
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  z-index: 1000;
  font-weight: 600;
}

.skip-link:focus {
  top: 1rem;
}

/* ---- Header ---- */

.site-header {
  background: linear-gradient(to right, var(--header-start), var(--header-end));
  padding: 0 1.5rem;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.site-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.03em;
}

.site-title:hover {
  color: #fff;
  opacity: 0.9;
}

.nav-menu {
  display: flex;
  gap: 0.25rem;
}

.nav-link {
  color: rgba(255, 255, 255, 0.85);
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 500;
  transition: background var(--transition), color var(--transition);
}

.nav-link:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

.nav-link.active {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
}

/* Hamburger */

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 101;
}

.hamburger,
.hamburger::before,
.hamburger::after {
  display: block;
  width: 24px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform var(--transition);
}

.hamburger {
  position: relative;
}

.hamburger::before,
.hamburger::after {
  content: '';
  position: absolute;
  left: 0;
}

.hamburger::before { top: -7px; }
.hamburger::after { top: 7px; }

.nav-toggle.open .hamburger {
  background: transparent;
}

.nav-toggle.open .hamburger::before {
  transform: rotate(45deg);
  top: 0;
}

.nav-toggle.open .hamburger::after {
  transform: rotate(-45deg);
  top: 0;
}

/* ---- Content Wrapper ---- */

.content-wrapper {
  max-width: var(--max-width);
  width: 100%;
  margin: 0 auto;
  padding: 2rem 1.5rem;
  flex: 1;
}

/* ---- Hero ---- */

.hero {
  text-align: center;
  padding: 3rem 0;
}

.hero-title {
  font-size: 3rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.hero-bio {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.hero-bio p {
  margin: 0;
}

/* ---- Divider ---- */

.divider {
  height: 2px;
  background: linear-gradient(to right, transparent, var(--accent), transparent);
  margin: 1rem 0 2.5rem;
}

/* ---- Section Heading ---- */

.section-heading {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

/* ---- Post Cards ---- */

.post-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.post-card {
  display: flex;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: background var(--transition), box-shadow var(--transition);
}

.post-card:hover {
  background: var(--bg-card-hover);
  box-shadow: 0 4px 20px var(--accent-glow);
}

.post-card-link {
  display: flex;
  width: 100%;
  color: inherit;
}

.post-card-link:hover {
  color: inherit;
}

.post-card-thumbnail {
  width: 220px;
  min-height: 160px;
  flex-shrink: 0;
  overflow: hidden;
}

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

.post-card-body {
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
}

.post-card-date {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}

.post-card-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  line-height: 1.3;
}

.post-card-summary {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 0.75rem;
}

.post-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.post-card-tag {
  font-size: 0.8rem;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 0.15rem 0.6rem;
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
}

/* No-thumbnail card */

.post-card--no-thumb .post-card-body {
  padding: 1.25rem 1.5rem;
}

/* ---- View All Button ---- */

.view-all-container {
  text-align: center;
  margin-top: 2rem;
}

.btn-view-all {
  display: inline-block;
  padding: 0.75rem 2rem;
  border: 2px solid var(--accent);
  color: var(--accent);
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  transition: background var(--transition), color var(--transition);
}

.btn-view-all:hover {
  background: var(--accent);
  color: #fff;
}

/* ---- Page Header ---- */

.page-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-image: linear-gradient(to right, var(--accent), transparent) 1;
  border-bottom: 2px solid;
}

.page-header h1 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 0.25rem;
}

.page-description {
  color: var(--text-secondary);
  font-size: 1.05rem;
}

/* ---- Single Post ---- */

.post-single {
  max-width: var(--content-width);
  margin: 0 auto;
}

.post-single-header {
  margin-bottom: 2rem;
}

.post-single-header h1 {
  font-size: 2.25rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 0.75rem;
}

.post-single-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}

.post-single-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tag-pill {
  font-size: 0.8rem;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 0.2rem 0.65rem;
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  transition: background var(--transition);
}

.tag-pill:hover {
  background: rgba(232, 113, 26, 0.25);
  color: var(--accent-hover);
}

.post-single-thumbnail {
  width: 100%;
  border-radius: var(--radius-lg);
  margin-bottom: 2rem;
  cursor: pointer;
}

.post-single-content {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--text-primary);
}

.post-single-content h2 {
  font-size: 1.6rem;
  font-weight: 700;
  margin: 2rem 0 1rem;
  color: var(--text-primary);
}

.post-single-content h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin: 1.5rem 0 0.75rem;
  color: var(--text-primary);
}

.post-single-content p {
  margin-bottom: 1.25rem;
}

.post-single-content img {
  border-radius: var(--radius);
  margin: 1.5rem 0;
  cursor: pointer;
}

.post-single-content a {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.post-single-content blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 1.25rem;
  margin: 1.5rem 0;
  color: var(--text-secondary);
  font-style: italic;
}

.post-single-content ul,
.post-single-content ol {
  margin: 1rem 0;
  padding-left: 1.5rem;
}

.post-single-content li {
  margin-bottom: 0.4rem;
}

.post-single-content pre {
  background: var(--bg-secondary);
  padding: 1.25rem;
  border-radius: var(--radius);
  overflow-x: auto;
  margin: 1.5rem 0;
  font-size: 0.9rem;
}

.post-single-content code {
  background: var(--bg-secondary);
  padding: 0.15rem 0.4rem;
  border-radius: 3px;
  font-size: 0.9em;
}

.post-single-content pre code {
  background: none;
  padding: 0;
}

/* ---- Video Embed ---- */

.video-embed {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  border-radius: var(--radius-lg);
  margin-bottom: 2rem;
}

.video-embed iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* ---- Post Navigation ---- */

.post-nav {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-image: linear-gradient(to right, var(--accent), transparent) 1;
  border-top: 2px solid;
}

.post-nav-prev,
.post-nav-next {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  max-width: 45%;
  color: var(--text-primary);
}

.post-nav-prev:hover,
.post-nav-next:hover {
  color: var(--accent);
}

.post-nav-next {
  text-align: right;
  margin-left: auto;
}

.post-nav-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.post-nav-title {
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1.3;
}

/* ---- Pagination ---- */

.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  margin-top: 2.5rem;
  padding-top: 2rem;
}

.pagination a,
.pagination span {
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 500;
}

.pagination a {
  background: var(--bg-card);
  color: var(--text-primary);
  transition: background var(--transition);
}

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

.pagination .disabled {
  color: var(--text-muted);
  opacity: 0.4;
  cursor: default;
}

.pagination .page-info {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

/* ---- Tag Terms ---- */

.tag-terms-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.tag-term {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.95rem;
  color: var(--accent);
  background: var(--bg-card);
  padding: 0.5rem 1rem;
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  transition: background var(--transition);
}

.tag-term:hover {
  background: var(--bg-card-hover);
  color: var(--accent-hover);
}

.tag-term-count {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ---- Footer ---- */

.site-footer {
  background: var(--bg-secondary);
  padding: 1.5rem;
  margin-top: 2rem;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-links {
  display: flex;
  gap: 1rem;
}

.rss-link {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.rss-link:hover {
  color: var(--accent);
}

.footer-copyright {
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ---- 404 ---- */

.error-page {
  text-align: center;
  padding: 4rem 0;
}

.error-code {
  font-size: 6rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 1rem;
}

.error-message {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

/* ---- Back to Top ---- */

.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 44px;
  height: 44px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-size: 1.2rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), visibility var(--transition), background var(--transition);
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.back-to-top:hover {
  background: var(--accent-hover);
}

/* ---- Lightbox ---- */

.lightbox-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.9);
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.lightbox-overlay.active {
  display: flex;
}

.lightbox-overlay img {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
  border-radius: var(--radius);
  cursor: default;
}

.lightbox-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  width: 44px;
  height: 44px;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-size: 1.5rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
}

.lightbox-close:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* ---- Accessibility ---- */

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

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---- Responsive ---- */

@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }

  .nav-menu {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    flex-direction: column;
    padding: 1rem;
    gap: 0.25rem;
    transform: translateY(-120%);
    transition: transform 0.3s ease;
    z-index: 99;
    border-bottom: 2px solid var(--border);
  }

  .nav-menu.open {
    transform: translateY(0);
  }

  .nav-link {
    padding: 0.75rem 1rem;
    min-height: 44px;
    display: flex;
    align-items: center;
  }

  .post-card-link {
    flex-direction: column;
  }

  .post-card-thumbnail {
    width: 100%;
    min-height: 200px;
    max-height: 240px;
  }

  .hero-title {
    font-size: 2.25rem;
  }

  .post-single-header h1 {
    font-size: 1.75rem;
  }

  .post-nav {
    flex-direction: column;
  }

  .post-nav-prev,
  .post-nav-next {
    max-width: 100%;
    text-align: left;
  }

  .footer-inner {
    flex-direction: column;
    gap: 0.75rem;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .content-wrapper {
    padding: 1.25rem 1rem;
  }

  .hero {
    padding: 2rem 0;
  }

  .hero-title {
    font-size: 1.85rem;
  }

  .post-card-body {
    padding: 1rem;
  }

  .pagination {
    flex-wrap: wrap;
  }
}