/* Developer Theme - Style Sheet */
/* All classes prefixed with dv- to avoid fingerprinting */

:root {
  --dv-primary: #2563eb;
  --dv-secondary: #1e40af;
  --dv-accent: #f59e0b;
  --dv-bg: #ffffff;
  --dv-text: #111827;
  --dv-font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --dv-nav-bg: #1a1e2e;
  --dv-nav-text: #f0f2f5;
  --dv-card-bg: #ffffff;
  --dv-card-border: #e2e6ec;
  --dv-sidebar-bg: #f6f8fb;
  --dv-code-bg: #f1f3f7;
  --dv-footer-bg: #1a1e2e;
  --dv-footer-text: #c4c9d4;
  --dv-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --dv-shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --dv-shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.1);
  --dv-radius: 6px;
  --dv-transition: 0.2s ease;
}

/* ========== RESET & BASE ========== */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--dv-font);
  color: var(--dv-text);
  background-color: var(--dv-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

h1, h2, h3, h4, h5, h6 {
  line-height: 1.3;
  font-weight: 700;
  color: var(--dv-secondary);
}

h1 { font-size: 2rem; margin-bottom: 0.75rem; }
h2 { font-size: 1.625rem; margin-bottom: 0.625rem; }
h3 { font-size: 1.3rem; margin-bottom: 0.5rem; }
h4 { font-size: 1.1rem; margin-bottom: 0.4rem; }

p {
  margin-bottom: 1rem;
}

/* ========== TOP NAVIGATION BAR ========== */

.dv-topbar {
  background: var(--dv-nav-bg);
  color: var(--dv-nav-text);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.dv-topbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  height: 60px;
}

.dv-logo {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--dv-nav-text);
  letter-spacing: -0.3px;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.dv-logo:hover {
  color: var(--dv-accent);
}

.dv-logo-icon {
  width: 28px;
  height: 28px;
  background: var(--dv-accent);
  border-radius: 5px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 800;
  color: #fff;
}

.dv-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.dv-nav a {
  color: var(--dv-nav-text);
  padding: 0.5rem 0.9rem;
  border-radius: var(--dv-radius);
  font-size: 0.9rem;
  font-weight: 500;
  transition: background var(--dv-transition), color var(--dv-transition);
}

.dv-nav a:hover,
.dv-nav a.dv-active {
  background: rgba(255, 255, 255, 0.1);
  color: var(--dv-accent);
}

.dv-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 0.5rem;
  background: none;
  border: none;
}

.dv-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--dv-nav-text);
  border-radius: 1px;
  transition: transform var(--dv-transition);
}

/* ========== LAYOUT ========== */

.dv-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.dv-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 2rem;
  padding: 2rem 0;
}

.dv-main {
  min-width: 0;
}

/* ========== PAGE HEADER / HERO ========== */

.dv-page-header {
  background: linear-gradient(135deg, var(--dv-nav-bg) 0%, #2a2f42 100%);
  color: var(--dv-nav-text);
  padding: 2.5rem 0;
  margin-bottom: 0;
}

.dv-page-header h1 {
  color: #fff;
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.dv-page-header p {
  color: #b0b6c4;
  font-size: 1.05rem;
  max-width: 600px;
  margin-bottom: 0;
}

/* ========== ARTICLE CARDS (Horizontal) ========== */

.dv-article-card {
  display: flex;
  background: var(--dv-card-bg);
  border: 1px solid var(--dv-card-border);
  border-radius: var(--dv-radius);
  overflow: hidden;
  margin-bottom: 1.5rem;
  transition: box-shadow var(--dv-transition), transform var(--dv-transition);
}

.dv-article-card:hover {
  box-shadow: var(--dv-shadow-md);
  transform: translateY(-2px);
}

.dv-article-card-img {
  width: 260px;
  min-height: 200px;
  flex-shrink: 0;
  overflow: hidden;
}

.dv-article-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.dv-article-card:hover .dv-article-card-img img {
  transform: scale(1.04);
}

.dv-article-card-body {
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  flex: 1;
  min-width: 0;
}

.dv-article-card-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.8rem;
  color: #7c8294;
  margin-bottom: 0.6rem;
  flex-wrap: wrap;
}

.dv-article-card-category {
  background: var(--dv-primary);
  color: #fff;
  padding: 0.15rem 0.55rem;
  border-radius: 3px;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.dv-article-card-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  line-height: 1.35;
}

.dv-article-card-title a {
  color: var(--dv-secondary);
}

.dv-article-card-title a:hover {
  color: var(--dv-primary);
}

.dv-article-card-excerpt {
  font-size: 0.92rem;
  color: #5a6072;
  line-height: 1.6;
  margin-bottom: 0.75rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.dv-article-card-readmore {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--dv-primary);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.dv-article-card-readmore:hover {
  gap: 0.5rem;
}

/* ========== SIDEBAR ========== */

.dv-sidebar {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.dv-widget {
  background: var(--dv-sidebar-bg);
  border: 1px solid var(--dv-card-border);
  border-radius: var(--dv-radius);
  padding: 1.25rem;
}

.dv-widget-title {
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--dv-secondary);
  margin-bottom: 1rem;
  padding-bottom: 0.6rem;
  border-bottom: 2px solid var(--dv-primary);
}

.dv-widget-categories ul {
  list-style: none;
}

.dv-widget-categories li {
  border-bottom: 1px solid var(--dv-card-border);
}

.dv-widget-categories li:last-child {
  border-bottom: none;
}

.dv-widget-categories a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.55rem 0;
  font-size: 0.9rem;
  color: var(--dv-text);
  transition: padding-left var(--dv-transition), color var(--dv-transition);
}

.dv-widget-categories a:hover {
  padding-left: 0.4rem;
  color: var(--dv-primary);
}

.dv-widget-categories .dv-cat-arrow {
  font-size: 0.75rem;
  opacity: 0;
  transition: opacity var(--dv-transition);
}

.dv-widget-categories a:hover .dv-cat-arrow {
  opacity: 1;
}

.dv-widget-recent-item {
  display: flex;
  gap: 0.75rem;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--dv-card-border);
}

.dv-widget-recent-item:last-child {
  border-bottom: none;
}

.dv-widget-recent-thumb {
  width: 60px;
  height: 60px;
  border-radius: 4px;
  overflow: hidden;
  flex-shrink: 0;
}

.dv-widget-recent-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.dv-widget-recent-info {
  flex: 1;
  min-width: 0;
}

.dv-widget-recent-info a {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--dv-secondary);
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.dv-widget-recent-info a:hover {
  color: var(--dv-primary);
}

.dv-widget-recent-date {
  font-size: 0.76rem;
  color: #8a90a0;
  margin-top: 0.2rem;
}

.dv-widget-about-text {
  font-size: 0.9rem;
  color: #5a6072;
  line-height: 1.65;
}

.dv-widget-about-link {
  display: inline-block;
  margin-top: 0.75rem;
  font-size: 0.85rem;
  font-weight: 600;
}

/* ========== SINGLE ARTICLE ========== */

.dv-article-full {
  background: var(--dv-card-bg);
  border: 1px solid var(--dv-card-border);
  border-radius: var(--dv-radius);
  padding: 2rem;
  margin-bottom: 2rem;
}

.dv-article-full-header {
  margin-bottom: 1.5rem;
}

.dv-article-full-title {
  font-size: 1.85rem;
  line-height: 1.25;
  margin-bottom: 0.75rem;
}

.dv-article-full-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  font-size: 0.85rem;
  color: #7c8294;
}

.dv-article-full-meta span {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.dv-article-full-image {
  border-radius: var(--dv-radius);
  overflow: hidden;
  margin-bottom: 1.5rem;
}

.dv-article-full-image img {
  width: 100%;
  height: auto;
}

.dv-article-full-content {
  font-size: 1.02rem;
  line-height: 1.8;
  color: var(--dv-text);
}

.dv-article-full-content h2 {
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.dv-article-full-content h3 {
  margin-top: 1.5rem;
  margin-bottom: 0.6rem;
}

.dv-article-full-content p {
  margin-bottom: 1.15rem;
}

.dv-article-full-content pre {
  background: var(--dv-code-bg);
  border: 1px solid var(--dv-card-border);
  border-radius: var(--dv-radius);
  padding: 1rem 1.25rem;
  overflow-x: auto;
  margin: 1.25rem 0;
  font-size: 0.88rem;
  line-height: 1.6;
}

.dv-article-full-content code {
  font-family: 'Fira Code', 'Consolas', monospace;
  font-size: 0.88em;
  background: var(--dv-code-bg);
  padding: 0.15em 0.4em;
  border-radius: 3px;
}

.dv-article-full-content pre code {
  background: none;
  padding: 0;
}

.dv-article-full-content blockquote {
  border-left: 4px solid var(--dv-primary);
  padding: 0.75rem 1.25rem;
  margin: 1.25rem 0;
  background: var(--dv-sidebar-bg);
  border-radius: 0 var(--dv-radius) var(--dv-radius) 0;
  color: #4a5068;
  font-style: italic;
}

.dv-article-full-content ul,
.dv-article-full-content ol {
  padding-left: 1.5rem;
  margin-bottom: 1.15rem;
}

.dv-article-full-content li {
  margin-bottom: 0.4rem;
}

.dv-article-full-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--dv-card-border);
}

.dv-tag {
  background: var(--dv-code-bg);
  color: #5a6072;
  padding: 0.25rem 0.7rem;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 500;
  transition: background var(--dv-transition), color var(--dv-transition);
}

.dv-tag:hover {
  background: var(--dv-primary);
  color: #fff;
}

/* ========== COMMENTS ========== */

.dv-comments-section {
  background: var(--dv-card-bg);
  border: 1px solid var(--dv-card-border);
  border-radius: var(--dv-radius);
  padding: 1.75rem 2rem;
}

.dv-comments-title {
  font-size: 1.2rem;
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--dv-card-border);
}

.dv-comment {
  display: flex;
  gap: 1rem;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--dv-card-border);
}

.dv-comment:last-child {
  border-bottom: none;
}

.dv-comment-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
}

.dv-comment-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.dv-comment-body {
  flex: 1;
  min-width: 0;
}

.dv-comment-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.4rem;
}

.dv-comment-author {
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--dv-secondary);
}

.dv-comment-date {
  font-size: 0.78rem;
  color: #8a90a0;
}

.dv-comment-text {
  font-size: 0.92rem;
  color: #5a6072;
  line-height: 1.6;
}

/* ========== ABOUT PAGE ========== */

.dv-about-content {
  background: var(--dv-card-bg);
  border: 1px solid var(--dv-card-border);
  border-radius: var(--dv-radius);
  padding: 2rem;
}

.dv-about-content h2 {
  margin-top: 1.75rem;
  margin-bottom: 0.75rem;
}

.dv-about-content h2:first-child {
  margin-top: 0;
}

.dv-about-content p {
  font-size: 1rem;
  color: #4a5068;
  line-height: 1.75;
}

/* ========== PAGINATION ========== */

.dv-pagination {
  display: flex;
  justify-content: center;
  gap: 0.4rem;
  margin-top: 2rem;
  padding-top: 1.5rem;
}

.dv-pagination a,
.dv-pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  height: 38px;
  padding: 0 0.5rem;
  border: 1px solid var(--dv-card-border);
  border-radius: var(--dv-radius);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--dv-text);
  background: var(--dv-card-bg);
  transition: all var(--dv-transition);
}

.dv-pagination a:hover {
  background: var(--dv-primary);
  color: #fff;
  border-color: var(--dv-primary);
}

.dv-pagination .dv-page-current {
  background: var(--dv-primary);
  color: #fff;
  border-color: var(--dv-primary);
}

/* ========== FOOTER ========== */

.dv-footer {
  background: var(--dv-footer-bg);
  color: var(--dv-footer-text);
  margin-top: 3rem;
}

.dv-footer-main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 3rem 1.5rem 2rem;
  display: grid;
  grid-template-columns: 1.2fr 0.9fr 0.9fr;
  gap: 2.5rem;
}

.dv-footer-heading {
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.dv-footer-about-text {
  font-size: 0.88rem;
  line-height: 1.65;
  color: var(--dv-footer-text);
}

.dv-footer-links {
  list-style: none;
}

.dv-footer-links li {
  margin-bottom: 0.45rem;
}

.dv-footer-links a {
  color: var(--dv-footer-text);
  font-size: 0.88rem;
  transition: color var(--dv-transition), padding-left var(--dv-transition);
}

.dv-footer-links a:hover {
  color: var(--dv-accent);
  padding-left: 0.3rem;
}

.dv-footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  text-align: center;
  padding: 1.25rem 1.5rem;
  font-size: 0.82rem;
  color: #6c7186;
}

/* ========== BREADCRUMBS ========== */

.dv-breadcrumbs {
  font-size: 0.82rem;
  color: #8a90a0;
  padding: 0.75rem 0;
}

.dv-breadcrumbs a {
  color: #8a90a0;
}

.dv-breadcrumbs a:hover {
  color: var(--dv-primary);
}

.dv-breadcrumbs .dv-bc-sep {
  margin: 0 0.4rem;
  opacity: 0.6;
}

/* ========== EMPTY STATE ========== */

.dv-empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: #8a90a0;
}

.dv-empty-state h3 {
  color: #8a90a0;
  margin-bottom: 0.5rem;
}

/* ========== RESPONSIVE ========== */

@media (max-width: 992px) {
  .dv-layout {
    grid-template-columns: 1fr;
  }

  .dv-sidebar {
    order: 2;
  }

  .dv-footer-main {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  html {
    font-size: 15px;
  }

  .dv-nav {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--dv-nav-bg);
    flex-direction: column;
    padding: 0.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  }

  .dv-nav.dv-nav-open {
    display: flex;
  }

  .dv-nav a {
    padding: 0.7rem 1rem;
  }

  .dv-hamburger {
    display: flex;
  }

  .dv-article-card {
    flex-direction: column;
  }

  .dv-article-card-img {
    width: 100%;
    min-height: 180px;
    max-height: 220px;
  }

  .dv-article-full {
    padding: 1.25rem;
  }

  .dv-article-full-title {
    font-size: 1.45rem;
  }

  .dv-comments-section {
    padding: 1.25rem;
  }

  .dv-footer-main {
    grid-template-columns: 1fr;
    gap: 1.75rem;
  }

  .dv-page-header {
    padding: 1.75rem 0;
  }

  .dv-page-header h1 {
    font-size: 1.6rem;
  }
}

@media (max-width: 480px) {
  .dv-topbar-inner {
    padding: 0 1rem;
  }

  .dv-container {
    padding: 0 1rem;
  }

  .dv-article-card-body {
    padding: 1rem;
  }

  .dv-article-full {
    padding: 1rem;
  }

  .dv-article-full-title {
    font-size: 1.3rem;
  }

  .dv-widget {
    padding: 1rem;
  }
}