/*
Theme Name: NNG Blog
Theme URI: https://www.niconico-guitars.com/html/blog/
Author: Nico Nico Guitars
Description: Lightweight blog theme for Nico Nico Guitars.
Version: 1.0.0
Text Domain: nng-blog
*/

:root {
  --nng-pink: #ff3774;
  --nng-text: #333;
  --nng-muted: #777;
  --nng-border: #c6c6c6;
  --nng-soft: #f5f5f5;
  --nng-title-font: "Oswald", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: #fff;
  color: var(--nng-text);
  font-family: Arial, "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  font-size: 15px;
  line-height: 1.75;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.18s ease, background-color 0.18s ease, border-color 0.18s ease;
}

a:hover {
  color: var(--nng-pink);
}

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

.nng-blog-header {
  border-bottom: 1px solid var(--nng-border);
  background: #fff;
}

.nng-blog-header__inner,
.nng-blog-main,
.nng-blog-footer__inner {
  width: min(1100px, calc(100% - 32px));
  margin: 0 auto;
}

.nng-blog-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 78px;
  gap: 24px;
}

.nng-blog-title {
  margin: 0;
  font-family: var(--nng-title-font);
  font-size: 1.45rem;
  font-weight: 600;
  line-height: 1.25;
}

.nng-blog-title a:hover {
  color: var(--nng-text);
}

.nng-blog-description {
  margin: 4px 0 0;
  color: var(--nng-muted);
  font-size: 0.78rem;
  letter-spacing: 0.03em;
}

.nng-blog-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.nng-blog-nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  padding: 7px 18px;
  border: 1px solid #333;
  border-radius: 999px;
  color: #333;
  font-size: 0.82rem;
  font-weight: 700;
}

.nng-blog-nav a:hover {
  background: #333;
  color: #fff;
}

.nng-blog-main {
  padding: 42px 0 60px;
}

.nng-blog-page-head {
  margin-bottom: 28px;
  border-top: 4px solid var(--nng-pink);
  border-bottom: 1px solid var(--nng-border);
  padding: 16px 0 14px;
}

.nng-blog-page-head h1 {
  margin: 0;
  color: #222;
  font-family: var(--nng-title-font);
  font-size: 1.55rem;
  font-weight: 600;
  line-height: 1.35;
}

.nng-post-list {
  display: grid;
  gap: 24px;
}

.nng-blog-layout {
  display: grid;
  grid-template-columns: 210px minmax(0, 1fr);
  gap: 34px;
  align-items: start;
}

.nng-category-nav {
  position: sticky;
  top: 18px;
}

.nng-category-nav__title {
  margin: 0 0 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--nng-border);
  color: #222;
  font-size: 1.05rem;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: 0.06em;
}

.nng-category-nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--nng-border);
}

.nng-category-nav__list li {
  border-bottom: 1px solid var(--nng-border);
}

.nng-category-nav__list a,
.nng-category-nav__children a {
  display: block;
  position: relative;
  padding: 11px 4px 11px 18px;
  color: #333;
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1.35;
}

.nng-category-nav__list a::before,
.nng-category-nav__children a::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 2px;
  width: 7px;
  height: 7px;
  border: 1px solid #555;
  transform: translateY(-50%);
}

.nng-category-nav__list a:hover,
.nng-category-nav__list a.is-active,
.nng-category-nav__children a:hover,
.nng-category-nav__children a.is-active {
  color: var(--nng-pink);
}

.nng-category-nav__list a:hover::before,
.nng-category-nav__list a.is-active::before,
.nng-category-nav__children a:hover::before,
.nng-category-nav__children a.is-active::before {
  border-color: var(--nng-pink);
  background: var(--nng-pink);
}

.nng-category-nav__parent {
  border-bottom: 1px solid var(--nng-border);
}

.nng-category-nav__children {
  list-style: none;
  margin: -2px 0 8px;
  padding: 0 0 0 16px;
}

.nng-category-nav__children li {
  border-bottom: 0;
}

.nng-category-nav__children a {
  padding-top: 7px;
  padding-bottom: 7px;
  color: #555;
  font-size: 0.82rem;
  font-weight: 700;
}

.nng-category-nav__children a::before {
  width: 5px;
  height: 5px;
  border-color: #888;
}

.nng-category-nav__shop-links {
  display: grid;
  gap: 10px;
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--nng-border);
}

.nng-category-nav__shop-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 8px 14px;
  border: 1px solid #333;
  border-radius: 999px;
  color: #333;
  font-size: 0.82rem;
  font-weight: 700;
  line-height: 1.25;
  text-align: center;
}

.nng-category-nav__shop-links a:hover {
  border-color: var(--nng-pink);
  background: var(--nng-pink);
  color: #fff;
}

.nng-category-nav__shop-links .nng-category-nav__shop-banner,
.nng-category-nav__shop-links .nng-category-nav__buy-banner {
  display: block;
  overflow: hidden;
  min-height: 0;
  padding: 0;
  border: 0;
  border-radius: 4px;
  background: transparent;
}

.nng-category-nav__shop-links .nng-category-nav__shop-banner:hover,
.nng-category-nav__shop-links .nng-category-nav__buy-banner:hover {
  background: transparent;
  opacity: 0.78;
}

.nng-category-nav__shop-banner img,
.nng-category-nav__buy-banner img {
  display: block;
  width: 100%;
  height: auto;
}

.nng-single-site-links {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: center;
  justify-content: stretch;
  margin-top: 42px;
  margin-bottom: 0;
  padding: 24px 0;
  border-bottom: 1px solid var(--nng-border);
  border-top: 1px solid var(--nng-border);
}

.nng-mobile-pager-banners {
  display: none;
}

.nng-post-card {
  display: grid;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--nng-border);
}

.nng-post-card__category {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  max-width: 100%;
  min-height: 24px;
  padding: 3px 9px;
  border: 1px solid var(--nng-pink);
  border-radius: 3px;
  color: var(--nng-pink);
  font-size: 0.68rem;
  font-weight: 800;
  line-height: 1.25;
}

.nng-post-card__category:hover {
  background: var(--nng-pink);
  color: #fff;
}

.nng-post-card__meta-row {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
  margin-bottom: 12px;
}

.nng-post-card__main {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 22px;
}

.nng-post-card__thumb {
  display: block;
  overflow: hidden;
  border: 1px solid var(--nng-border);
  background: var(--nng-soft);
  aspect-ratio: 4 / 3;
}

.nng-post-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.28s ease;
}

.nng-post-card__thumb:hover img {
  transform: scale(1.035);
}

.nng-post-card__title {
  margin: 0 0 8px;
  font-family: var(--nng-title-font);
  font-size: 1.2rem;
  font-weight: 600;
  line-height: 1.45;
}

.nng-post-card__meta {
  margin: 0 auto 0 0;
  color: var(--nng-muted);
  font-size: 0.76rem;
  letter-spacing: 0.02em;
}

.nng-post-card__excerpt {
  margin: 0;
  color: #555;
  font-size: 0.9rem;
  line-height: 1.8;
}

.nng-post-card__more {
  display: inline;
  margin-left: 0.45em;
  color: var(--nng-pink);
  font-size: 0.72rem;
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.nng-post-card__more:hover {
  color: #333;
}

.nng-pagination {
  margin-top: 42px;
}

.nng-pagination .nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
}

.nng-pagination .page-numbers {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  min-height: 38px;
  padding: 6px 12px;
  border: 1px solid var(--nng-border);
  border-radius: 999px;
  color: #333;
  font-weight: 700;
}

.nng-pagination .page-numbers.current,
.nng-pagination .page-numbers:hover {
  border-color: #333;
  background: #333;
  color: #fff;
}

.nng-single {
  max-width: 860px;
  margin: 0 auto;
}

.nng-single__category {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: max-content;
  max-width: 100%;
  padding: 3px 9px;
  border: 1px solid var(--nng-pink);
  border-radius: 3px;
  color: var(--nng-pink);
  font-size: 0.68rem;
  font-weight: 800;
  line-height: 1.25;
}

.nng-single__title {
  margin: 0 0 10px;
  font-family: var(--nng-title-font);
  font-size: clamp(1.55rem, 3.4vw, 2.15rem);
  font-weight: 600;
  line-height: 1.35;
}

.nng-single__meta {
  margin: 0 auto 0 0;
  color: var(--nng-muted);
  font-size: 0.84rem;
}

.nng-single__meta-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 28px;
}

.nng-single__thumb {
  margin: 0 0 30px;
}

.nng-single__thumb img {
  width: 100%;
  max-height: 560px;
  object-fit: contain;
  display: block;
}

.nng-entry {
  font-size: 1rem;
}

.nng-entry h2,
.nng-entry h3 {
  margin-top: 2.2em;
  margin-bottom: 0.8em;
  font-weight: 800;
  line-height: 1.45;
}

.nng-entry p {
  margin: 0 0 1.4em;
}

.nng-entry a {
  color: var(--nng-pink);
  text-decoration: underline;
}

.nng-entry img {
  height: auto;
}

.nng-post-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--nng-border);
}

.nng-post-nav a {
  display: block;
  padding: 14px 16px;
  border: 1px solid var(--nng-border);
  color: #333;
  font-weight: 700;
}

.nng-post-nav__label {
  color: var(--nng-pink);
}

.nng-post-nav a:hover {
  border-color: var(--nng-pink);
  color: var(--nng-pink);
}

.nng-blog-footer {
  border-top: 1px solid var(--nng-border);
  background: #f1f1f1;
}

.nng-blog-footer__inner {
  padding: 34px 0 24px;
  color: #555;
  font-size: 0.78rem;
  text-align: left;
}

.nng-footer-shop {
  width: 100%;
  max-width: 860px;
  margin: 0 auto 24px;
  padding: 24px;
  border: 1px solid var(--nng-border);
  background: #fff;
}

.nng-footer-shop__title {
  margin: 0 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--nng-border);
  color: #222;
  font-size: 1.05rem;
  font-weight: 800;
  line-height: 1.3;
}

.nng-footer-shop__links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: -4px 0 16px;
  font-size: 0.82rem;
  font-weight: 700;
}

.nng-footer-shop__links a {
  color: #333;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.nng-footer-shop__links a:hover {
  color: var(--nng-pink);
}

.nng-footer-shop__list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 28px;
  margin: 0;
}

.nng-footer-shop__list div {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: 14px;
  padding: 10px 0;
  border-bottom: 1px solid #eee;
}

.nng-footer-shop__list div:nth-last-child(-n + 2) {
  border-bottom: 0;
}

.nng-footer-shop__list dt {
  color: #777;
  font-weight: 700;
}

.nng-footer-shop__list dd {
  margin: 0;
  color: #333;
}

.nng-footer-shop__list a {
  color: #333;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.nng-footer-shop__list a:hover {
  color: var(--nng-pink);
}

.nng-footer-shop__chip {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  margin: 3px 0 0 8px;
  padding: 4px 12px;
  border: 1px solid #d6d6d6;
  border-radius: 999px;
  background: #f7f7f7;
  color: #222;
  font-size: 0.78rem;
  line-height: 1.2;
  text-decoration: none;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.nng-footer-shop__chip:hover {
  border-color: #222;
  background: #222;
  color: #fff;
  text-decoration: none;
}

.nng-blog-footer__copy {
  margin: 0;
  text-align: center;
}

@media (max-width: 900px) {
  .nng-blog-header__inner {
    display: block;
    padding: 18px 0;
  }

  .nng-blog-nav {
    justify-content: flex-start;
    margin-top: 14px;
  }

  .nng-blog-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .nng-category-nav {
    position: static;
  }

  .nng-category-nav__list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    border-top: 0;
  }

  .nng-category-nav__list li {
    border-bottom: 0;
  }

  .nng-category-nav__parent {
    display: block;
    flex: 0 0 auto;
    width: auto;
    border-bottom: 0;
  }

  .nng-category-nav__children {
    display: grid;
    grid-template-columns: repeat(4, max-content);
    gap: 10px;
    width: 100%;
    margin: 8px 0 0;
    padding-left: 0;
  }

  .nng-category-nav__children li {
    display: block;
  }

  .nng-category-nav__list a,
  .nng-category-nav__children a {
    min-height: 32px;
    padding: 7px 13px 7px 26px;
    border: 1px solid var(--nng-border);
    border-radius: 3px;
    font-size: 0.82rem;
  }

  .nng-category-nav__list a::before,
  .nng-category-nav__children a::before {
    left: 12px;
  }

  .nng-post-card {
    gap: 12px;
  }

  .nng-category-nav__shop-links {
    grid-template-columns: 1fr 1fr;
  }

  .nng-single-site-links {
    grid-template-columns: 1fr 1fr;
    justify-content: stretch;
  }

  .nng-post-card__main {
    grid-template-columns: 180px minmax(0, 1fr);
  }
}

@media (max-width: 640px) {
  .nng-blog-header__inner,
  .nng-blog-main,
  .nng-blog-footer__inner {
    width: min(100% - 24px, 1100px);
  }

  .nng-blog-main {
    padding-top: 28px;
  }

  .nng-category-nav__children {
    display: none;
  }

  .nng-category-nav__shop-links {
    display: none;
  }

  .nng-category-nav__shop-links.nng-mobile-pager-banners {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
    margin-top: 28px;
    padding-top: 0;
    border-top: 0;
  }

  .nng-post-card__main {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .nng-post-card__thumb {
    aspect-ratio: 4 / 3;
  }

  .nng-single__thumb img {
    max-height: 70vh;
  }

  .nng-post-card__title {
    font-size: 1.05rem;
  }

  .nng-post-card__meta-row,
  .nng-single__meta-row {
    flex-wrap: wrap;
  }

  .nng-post-card__category,
  .nng-single__category {
    margin-left: auto;
  }

  .nng-post-nav {
    grid-template-columns: 1fr;
  }

  .nng-single-site-links {
    grid-template-columns: 1fr;
  }

  .nng-footer-shop {
    padding: 18px;
  }

  .nng-footer-shop__list {
    grid-template-columns: 1fr;
  }

  .nng-footer-shop__list div {
    grid-template-columns: 96px minmax(0, 1fr);
  }

  .nng-footer-shop__list div:nth-last-child(-n + 2) {
    border-bottom: 1px solid #eee;
  }

  .nng-footer-shop__list div:last-child {
    border-bottom: 0;
  }
}