/*
Theme Name: Mellow Window
Theme URI: https://www.meonhietdoi.com
Author: Nguyễn Thu Hà
Author URI: https://www.meonhietdoi.com
Description: A calm editorial theme with warm tinted surfaces, soft rounded blocks, and line-led details.
Version: 2.3.0
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
*/

:root {
  --bg: #f7f0e4;
  --fg: #183f3d;
  --muted: #6f7d78;
  --border: #d8cbb8;
  --radius: 18px;
  --shadow: 0 14px 34px rgba(24, 63, 61, 0.10);
  --accent: #df7a60;
  --media-ratio: 16 / 9;
}

* { box-sizing: border-box; }
html { color-scheme: light; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1rem;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; height: auto; border: 0; }
a { color: var(--fg); text-decoration-thickness: 1px; text-underline-offset: 0.18em; }
a:hover, a:focus { color: var(--accent); }
h1, h2, h3, h4, h5, h6 {
  font-family: Georgia, "Times New Roman", serif;
  line-height: 1.2;
  margin: 0 0 0.65em;
  font-weight: 700;
}
p { margin: 0 0 1.1em; }
ul, ol { margin: 0 0 1.1em 1.25rem; padding: 0; }
blockquote {
  margin: 1.4rem 0;
  padding: 0.2rem 0 0.2rem 1.2rem;
  border-left: 4px solid var(--accent);
  color: var(--muted);
}
code, pre {
  background: rgba(223, 122, 96, 0.10);
  border-radius: calc(var(--radius) / 2);
}
pre { padding: 1rem; overflow: auto; }

.u-container { width: min(1120px, calc(100% - 2rem)); margin-inline: auto; }
.u-flex { display: flex; align-items: center; gap: 1rem; }
.u-between { justify-content: space-between; }
.u-grid { display: grid; gap: 1.25rem; }
.u-stack { display: grid; gap: 1rem; }
.u-quiet { color: var(--muted); }
.u-small { font-size: 0.92rem; }
.u-card {
  background: rgba(255, 252, 246, 0.72);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.u-pad { padding: clamp(1rem, 2vw, 1.5rem); }
.u-tint { background: rgba(223, 122, 96, 0.10); }
.u-visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.site-header {
  background: rgba(247, 240, 228, 0.92);
  border-bottom: 2px solid var(--accent);
}
.site-header .u-container { min-height: 74px; }
.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.25rem;
  font-weight: 700;
  text-decoration: none;
}
.site-brand::before {
  content: "";
  width: 34px;
  height: 34px;
  border: 2px solid var(--fg);
  border-radius: 10px;
  background:
    linear-gradient(90deg, transparent 31%, var(--fg) 31%, var(--fg) 35%, transparent 35%, transparent 65%, var(--fg) 65%, var(--fg) 69%, transparent 69%),
    linear-gradient(0deg, transparent 48%, var(--fg) 48%, var(--fg) 52%, transparent 52%);
  background-color: rgba(223, 122, 96, 0.14);
}
.menu-toggle {
  display: none;
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) / 2);
  background: transparent;
  color: var(--fg);
  padding: 0.55rem 0.8rem;
  font: inherit;
}
.menu-toggle[aria-expanded="true"] { background: var(--u-tint, rgba(223,122,96,.10)); }
.site-nav { margin-left: auto; }
.nav-menu, .nav-menu ul { list-style: none; margin: 0; padding: 0; }
.nav-menu { display: flex; align-items: center; gap: 0.25rem; }
.nav-menu li { position: relative; }
.nav-menu a {
  display: block;
  padding: 0.75rem 0.85rem;
  border-radius: calc(var(--radius) / 2);
  text-decoration: none;
}
.nav-menu a:hover, .nav-menu a:focus, .nav-menu li:focus-within > a { background: rgba(223, 122, 96, 0.12); }
.nav-menu .sub-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 260px;
  display: none;
  background: #fffcf6;
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) / 2);
  box-shadow: var(--shadow);
  padding: 0.5rem;
  z-index: 15;
}
@media (min-width: 901px) {
  .nav-menu li:hover > .sub-menu, .nav-menu li:focus-within > .sub-menu { display: block; }
}
.nav-menu .sub-menu a { padding: 0.55rem 0.7rem; }
.submenu-toggle {
  display: none;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
}

#main-content { padding: clamp(1.25rem, 3vw, 2.5rem) 0; }
.l-shell { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: clamp(1.25rem, 3vw, 2.25rem); align-items: start; }
.l-main { min-width: 0; }
.l-aside { min-width: 0; }
.hero {
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 6px);
  background:
    radial-gradient(circle at 85% 20%, rgba(223, 122, 96, 0.16), transparent 30%),
    rgba(255, 252, 246, 0.70);
  padding: clamp(1.5rem, 5vw, 4rem);
  margin-bottom: 2rem;
}
.hero h1 { font-size: clamp(1.9rem, 4.6vw, 3.6rem); max-width: 20ch; overflow-wrap: anywhere; }
.hero p { max-width: 68ch; font-size: 1.08rem; }

.post-row {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 1rem;
  padding: 1rem;
  margin-bottom: 1rem;
}
.post-row .thumb {
  aspect-ratio: var(--media-ratio);
  width: 100%;
  object-fit: cover;
  border-radius: calc(var(--radius) - 6px);
  border: 1px solid var(--border);
  background: rgba(24, 63, 61, 0.06);
}
.post-row h2 { font-size: 1.35rem; margin-bottom: 0.35rem; overflow-wrap: anywhere; }
.post-row h2 a { text-decoration: none; }
.entry-meta { color: var(--muted); font-size: 0.92rem; margin-bottom: 0.5rem; }
.entry-excerpt p { margin-bottom: 0; }

.pagination { margin: 2rem 0 0; }
.pagination .nav-links { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.pagination .page-numbers {
  display: inline-flex;
  min-width: 2.4rem;
  justify-content: center;
  padding: 0.45rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) / 2);
  text-decoration: none;
  background: rgba(255, 252, 246, 0.72);
}
.pagination .current { background: var(--fg); color: var(--bg); }

.breadcrumb { margin: 0 0 1.25rem; color: var(--muted); font-size: 0.94rem; }
.breadcrumb .trail { display: flex; flex-wrap: wrap; gap: 0.45rem; align-items: center; }
.breadcrumb .crumb a { text-decoration: none; }
.breadcrumb .sep { color: var(--border); }

.archive-header { margin-bottom: 1.5rem; }
.archive-header h1 { font-size: clamp(1.8rem, 4vw, 3rem); }
.term-description { color: var(--muted); max-width: 72ch; }

.article {
  padding: clamp(1rem, 3vw, 2rem);
}
.article > header { margin-bottom: 1.25rem; }
.article h1 { font-size: clamp(1.85rem, 4.2vw, 3.2rem); overflow-wrap: anywhere; }
.featured-media { margin: 0 0 1.5rem; }
.featured-media img {
  display: block;
  width: 100%;
  aspect-ratio: var(--media-ratio);
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}
.article-note {
  margin: 0 0 1.5rem;
  padding: 1rem 1.1rem;
  border: 1px solid var(--border);
  border-left: 5px solid var(--accent);
  border-radius: calc(var(--radius) - 4px);
  background: rgba(223, 122, 96, 0.12);
}
.entry-content { font-size: 1.04rem; max-width: 100%; }
.entry-content h2 { margin-top: 2rem; font-size: 1.65rem; }
.entry-content h3 { margin-top: 1.6rem; font-size: 1.25rem; }
.entry-content table {
  display: block;
  max-width: 100%;
  overflow-x: auto;
  border-collapse: collapse;
}
.entry-content th, .entry-content td { overflow-wrap: normal; }
.tags-list { list-style: none; display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 1.5rem 0; padding: 0; }
.tags-list a {
  display: inline-block;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.3rem 0.75rem;
  text-decoration: none;
  background: rgba(255, 252, 246, 0.72);
}
.author-box, .related-posts, .comments-area {
  margin-top: 2rem;
  padding: 1.25rem;
}
.author-box { display: grid; grid-template-columns: 72px minmax(0, 1fr); gap: 1rem; align-items: start; }
.author-box .avatar { border-radius: 50%; border: 1px solid var(--border); }
.related-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.7rem; }
.related-list a { text-decoration: none; }

.widget { margin-bottom: 1.25rem; padding: 1rem; }
.widget ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.45rem; }
.widget a { text-decoration: none; }

.search-form { display: flex; gap: 0.5rem; width: 100%; }
.search-field {
  flex: 1;
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) / 2);
  padding: 0.65rem 0.8rem;
  background: #fffcf6;
  color: var(--fg);
  font: inherit;
}
.search-submit {
  border: 1px solid var(--fg);
  border-radius: calc(var(--radius) / 2);
  background: var(--fg);
  color: var(--bg);
  padding: 0.65rem 0.95rem;
  font: inherit;
  cursor: pointer;
}
.search-submit:hover, .search-submit:focus { background: var(--accent); border-color: var(--accent); }

.comment-list { list-style: none; margin: 1rem 0 2rem; padding: 0; display: grid; gap: 1rem; }
.comment-body { padding: 1rem; }
.comment-meta { color: var(--muted); font-size: 0.92rem; margin-bottom: 0.45rem; }
.comment-reply-link, .comment-edit-link { font-size: 0.92rem; }
.comment-respond { margin-top: 1.5rem; }
.comment-form input:not([type="checkbox"]), .comment-form textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) / 2);
  padding: 0.65rem 0.8rem;
  background: #fffcf6;
  color: var(--fg);
  font: inherit;
}
.comment-form .submit {
  width: auto;
  border: 1px solid var(--fg);
  background: var(--fg);
  color: var(--bg);
  cursor: pointer;
}

.site-footer {
  border-top: 1px solid var(--border);
  background: rgba(24, 63, 61, 0.06);
  padding: 2rem 0 1.25rem;
  margin-top: 3rem;
}
.footer-groups { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1.25rem; margin-bottom: 1.5rem; }
.footer-menu, .footer-menu ul, .footer-links { list-style: none; margin: 0; padding: 0; }
.footer-menu { display: contents; }
.footer-group { display: grid; gap: 0.55rem; align-content: start; }
.footer-heading { font-family: Georgia, "Times New Roman", serif; font-weight: 700; }
.footer-group .sub-menu, .footer-links { display: grid; gap: 0.35rem; }
.footer-group .sub-menu a, .footer-links a { text-decoration: none; color: var(--muted); }
.footer-group .sub-menu a:hover, .footer-group .sub-menu a:focus, .footer-links a:hover, .footer-links a:focus { color: var(--accent); }
.footer-bottom { border-top: 1px solid var(--border); padding-top: 1rem; color: var(--muted); font-size: 0.92rem; }
.footer-note { margin: 0.35rem 0 0; }

@media (max-width: 900px) {
  .l-shell { grid-template-columns: 1fr; }
  .footer-groups { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .menu-toggle { display: inline-flex; }
  .site-nav { position: absolute; inset: 74px 1rem auto 1rem; display: none; z-index: 18; }
  .site-nav.is-open { display: block; }
  .nav-menu { display: grid; gap: 0.25rem; background: #fffcf6; border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 0.75rem; }
  .nav-menu li { display: flex; flex-wrap: wrap; align-items: center; }
  .nav-menu li > a { flex: 1 1 auto; }
  .nav-menu .sub-menu { position: static; min-width: 0; flex: 1 1 100%; display: none; box-shadow: none; border: 0; border-left: 2px solid var(--border); border-radius: 0; margin-left: 0.75rem; padding: 0.15rem 0 0.15rem 0.75rem; }
  .nav-menu li.is-open > .sub-menu { display: block; }
  .submenu-toggle { display: inline-flex; flex: 0 0 auto; align-items: center; justify-content: center; min-width: 2.2rem; margin-left: 0.25rem; padding: 0.35rem 0.5rem; border: 1px solid var(--border); border-radius: calc(var(--radius) / 2); background: #fffcf6; }
  .post-row { grid-template-columns: 1fr; }
  .post-row .thumb { max-width: 100%; }
}

@media (max-width: 560px) {
  .u-container { width: min(100% - 1.25rem, 1120px); }
  .footer-groups { grid-template-columns: 1fr; }
  .author-box { grid-template-columns: 1fr; }
  .search-form { flex-direction: column; }
}