:root {
  --bg: #f6f8fc;
  --surface: #ffffff;
  --ink: #0d1730;
  --muted: #65718a;
  --line: #dfe6f3;
  --primary: #164794;
  --primary-dark: #0b2152;
  --accent: #2e82c8;
  --soft: #eaf3ff;
  --radius: 24px;
  --shadow: 0 20px 60px rgba(13, 23, 48, 0.1);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Inter", system-ui, -apple-system, Segoe UI, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
}

a {
  color: inherit;
  text-decoration: none;
}

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

.container {
  width: min(1120px, 92%);
  margin-inline: auto;
}

.blog-topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(246, 248, 252, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(13, 23, 48, 0.08);
}

.blog-topbar__inner {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.blog-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
}

.blog-brand span {
  white-space: nowrap;
}

.blog-brand img {
  width: 42px;
  height: 42px;
  object-fit: contain;
}

.blog-topbar__actions {
  display: flex;
  gap: 10px;
}

.blog-menu-toggle {
  display: none;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--primary-dark);
  width: 42px;
  height: 42px;
  border-radius: 12px;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  cursor: pointer;
}

.blog-main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.blog-main-nav a {
  border: 1px solid var(--line);
  background: #fff;
  color: #2a3856;
  border-radius: 999px;
  min-height: 40px;
  padding: 0 14px;
  display: inline-flex;
  align-items: center;
  font-size: 0.9rem;
  font-weight: 700;
  transition: 0.25s ease;
}

.blog-main-nav a:hover {
  transform: translateY(-2px);
}

.blog-main-nav a.active {
  border-color: rgba(46, 130, 200, 0.35);
  background: var(--soft);
  color: var(--primary);
}

.btn {
  border: 1px solid transparent;
  border-radius: 999px;
  min-height: 44px;
  padding: 0 18px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
  transition: 0.25s ease;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  box-shadow: 0 12px 28px rgba(22, 71, 148, 0.25);
}

.btn-secondary {
  background: #fff;
  border-color: var(--line);
  color: var(--primary-dark);
}

.btn:hover {
  transform: translateY(-2px);
}

.blog-hero {
  padding: 64px 0 42px;
  position: relative;
}

.blog-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 12%, rgba(46, 130, 200, 0.2), transparent 35%),
    radial-gradient(circle at 80% 18%, rgba(22, 71, 148, 0.15), transparent 30%);
  pointer-events: none;
}

.blog-hero__content {
  position: relative;
}

.blog-hero h1 {
  margin: 14px 0 14px;
  font-size: clamp(1.9rem, 4vw, 3.25rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.blog-hero p {
  margin: 0;
  max-width: 780px;
  color: var(--muted);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border: 1px solid rgba(46, 130, 200, 0.25);
  color: var(--primary);
  background: rgba(255, 255, 255, 0.8);
  border-radius: 999px;
  padding: 7px 13px;
  font-weight: 800;
}

.blog-toolbar {
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: 14px;
  margin: 18px 0 28px;
}

.blog-field {
  border: 1px solid var(--line);
  border-radius: 14px;
  min-height: 48px;
  padding: 0 14px;
  background: #fff;
  color: var(--ink);
  font-size: 0.95rem;
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  padding-bottom: 76px;
}

.blog-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 14px 44px rgba(13, 23, 48, 0.06);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.blog-card__thumb {
  aspect-ratio: 16 / 9;
  display: grid;
  place-items: center;
  background: #eef2f6;
  overflow: hidden;
}

.blog-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform 0.35s ease;
}

.blog-card:hover .blog-card__thumb img {
  transform: scale(1.04);
}

.blog-card__meta,
.post-meta {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 700;
}

.blog-card__meta {
  padding: 14px 18px 0;
}

.blog-card h2 {
  margin: 10px 18px 8px;
  line-height: 1.2;
  font-size: 1.18rem;
  letter-spacing: -0.02em;
}

.blog-card p {
  margin: 0 18px 16px;
  color: var(--muted);
  font-size: 0.95rem;
}

.blog-card__link {
  margin: auto 18px 18px;
  color: var(--primary);
  font-weight: 800;
}

.blog-empty {
  margin: 10px 0 72px;
  border: 1px dashed rgba(101, 113, 138, 0.5);
  background: rgba(255, 255, 255, 0.75);
  border-radius: 20px;
  padding: 24px;
  color: var(--muted);
  text-align: center;
}

.post-hero {
  padding: 64px 0 22px;
}

.post-hero h1 {
  margin: 12px 0;
  font-size: clamp(1.9rem, 4vw, 3.2rem);
  line-height: 1.1;
  letter-spacing: -0.04em;
}

.post-hero p {
  margin: 0;
  color: var(--muted);
  max-width: 100%;
}

.post-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  padding-bottom: 80px;
}

.post-main,
.admin-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 14px 40px rgba(13, 23, 48, 0.06);
}

.post-main {
  overflow: hidden;
}

.post-cover {
  display: block;
  width: 100%;
  max-height: 620px;
  object-fit: contain;
  background: #eef2f6;
}

.post-content {
  padding: 28px;
  color: #24314d;
}

.post-content h2,
.post-content h3 {
  color: var(--primary-dark);
  line-height: 1.25;
  margin-top: 28px;
  margin-bottom: 10px;
}

.post-content p,
.post-content li {
  margin: 0 0 14px;
}

.post-related {
  border-top: 1px solid var(--line);
  padding: 22px 28px 28px;
}

.post-related h3 {
  margin: 0 0 12px;
  font-size: 1rem;
}

.related-list {
  display: grid;
  gap: 10px;
}

.related-item {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px;
  background: #fff;
}

.related-item span {
  display: block;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.related-item strong {
  font-size: 0.92rem;
}

.post-related__all {
  margin: 14px 0 0;
}

.post-related__all a {
  color: var(--primary);
  font-weight: 700;
}

.post-not-found {
  margin: 24px 0 80px;
  text-align: center;
  color: var(--muted);
}

.post-not-found a {
  color: var(--primary);
  font-weight: 700;
}

.blog-footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  padding: 18px 0 30px;
  font-size: 0.92rem;
}

.blog-footer__inner {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.admin-wrap {
  padding: 36px 0 80px;
}

.admin-grid {
  display: grid;
  grid-template-columns: 360px minmax(0, 1fr);
  gap: 18px;
}

.admin-shell {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 18px;
}

.admin-sidebar {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 14px 40px rgba(13, 23, 48, 0.06);
  padding: 16px;
  align-self: start;
  position: sticky;
  top: 96px;
  display: grid;
  gap: 8px;
}

.admin-sidebar h3 {
  margin: 0 0 4px;
  font-size: 0.95rem;
}

.admin-sidebar a {
  border: 1px solid var(--line);
  border-radius: 10px;
  min-height: 40px;
  padding: 0 12px;
  display: inline-flex;
  align-items: center;
  font-weight: 700;
  color: #2a3856;
}

.admin-sidebar a.active {
  border-color: rgba(46, 130, 200, 0.35);
  background: var(--soft);
  color: var(--primary);
}

.admin-card {
  padding: 18px;
}

.admin-card h2,
.admin-card h3 {
  margin: 0 0 14px;
  font-size: 1rem;
}

.admin-form {
  display: grid;
  gap: 10px;
}

.admin-form label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.84rem;
  font-weight: 700;
  color: var(--muted);
}

.admin-form input,
.admin-form select,
.admin-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px 12px;
  font: inherit;
}

.admin-cover-preview {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #f9fbff;
  padding: 12px;
}

.admin-cover-preview__hint {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 0.82rem;
}

.admin-cover-preview img {
  width: min(320px, 100%);
  border-radius: 12px;
  border: 1px solid #dfe6f3;
}

.admin-form textarea {
  min-height: 120px;
  resize: vertical;
}

.admin-form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.admin-toolbar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.admin-toolbar .blog-field {
  min-width: 180px;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
}

.admin-table th,
.admin-table td {
  text-align: left;
  border-bottom: 1px solid var(--line);
  padding: 10px 8px;
  vertical-align: top;
  font-size: 0.9rem;
}

.admin-table small {
  display: block;
  color: var(--muted);
  margin-top: 3px;
}

.table-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.table-actions button {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 10px;
  min-height: 34px;
  padding: 0 10px;
  font-weight: 700;
  cursor: pointer;
}

.table-actions a {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 10px;
  min-height: 34px;
  padding: 0 10px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
}

.table-actions .danger {
  border-color: #ebcad0;
  color: #a71d2a;
}

.status-chip {
  display: inline-flex;
  border-radius: 999px;
  padding: 4px 9px;
  font-size: 0.75rem;
  text-transform: uppercase;
  font-weight: 800;
  letter-spacing: 0.06em;
}

.status-chip.published {
  background: #e8f8ec;
  color: #156b2d;
}

.status-chip.draft {
  background: #fff6df;
  color: #825d00;
}

.status-chip.archived {
  background: #eef2f8;
  color: #53617d;
}

.admin-feedback {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 30;
  border-radius: 12px;
  padding: 10px 14px;
  color: #fff;
  transform: translateY(18px);
  opacity: 0;
  transition: 0.25s ease;
}

.admin-feedback.show {
  transform: translateY(0);
  opacity: 1;
}

.admin-feedback.ok {
  background: #1f8d44;
}

.admin-feedback.warn {
  background: #b66500;
}

.admin-pass-modal {
  position: fixed;
  inset: 0;
  background: rgba(11, 33, 82, 0.35);
  display: grid;
  place-items: center;
  z-index: 40;
  padding: 18px;
}

.admin-pass-modal .admin-card {
  width: min(460px, 100%);
}

.admin-empty {
  color: var(--muted);
  text-align: center;
  padding: 16px 0;
}

@media (max-width: 1080px) {
  .blog-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .post-shell,
  .admin-grid {
    grid-template-columns: 1fr;
  }

}

@media (max-width: 768px) {
  .admin-shell {
    grid-template-columns: 1fr;
  }

  .admin-sidebar {
    position: static;
  }
}

@media (max-width: 980px) {
  .blog-topbar__inner {
    min-height: auto;
    flex-wrap: wrap;
    padding: 10px 0;
    gap: 10px;
  }

  .blog-menu-toggle {
    display: inline-flex;
    margin-left: auto;
  }

  .blog-main-nav {
    width: 100%;
    order: 3;
    display: none;
    flex-direction: column;
    gap: 10px;
    padding: 4px 0 10px;
  }

  .blog-main-nav.open {
    display: flex;
  }

  .blog-main-nav a {
    width: 100%;
    justify-content: center;
  }

  .blog-toolbar {
    grid-template-columns: 1fr;
  }

  .blog-hero {
    padding: 52px 0 30px;
  }

  .post-hero {
    padding: 44px 0 18px;
  }

  .post-content {
    padding: 22px;
  }
}

@media (max-width: 720px) {
  .blog-grid {
    grid-template-columns: 1fr;
  }

  .blog-topbar__inner {
    min-height: 72px;
    flex-wrap: wrap;
    padding: 8px 0;
  }

  .blog-topbar__actions {
    width: 100%;
  }

  .blog-main-nav {
    width: 100%;
  }

  .blog-main-nav a {
    width: 100%;
    justify-content: center;
  }

  .blog-topbar__actions .btn {
    flex: 1;
  }

  .blog-brand span {
    font-size: 0.92rem;
  }

  .blog-hero h1,
  .post-hero h1 {
    font-size: clamp(1.6rem, 7vw, 2.15rem);
  }

  .post-content {
    padding: 20px;
  }

  .admin-form__row {
    grid-template-columns: 1fr;
  }

  .blog-footer__inner {
    flex-direction: column;
  }
}