/* ========================================
   hanano-kazematsuri.net — hk- prefix
   Full-width layout, vertical-sidebar nav
   Breakpoints: 800px / 500px
   Max-width: 1100px
   ======================================== */

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: 'Hiragino Kaku Gothic ProN', 'Meiryo', 'Segoe UI', Arial, sans-serif;
  color: #444444;
  background-color: #fafaf7;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: #1e6324;
  text-decoration: none;
  transition: color 0.25s ease;
}

a:hover,
a:focus {
  color: #b58129;
  text-decoration: underline;
}

ul, ol {
  padding-left: 1.5em;
}

/* --- Layout: Sidebar + Main --- */
.hk-layout {
  display: flex;
  min-height: 100vh;
}

/* --- Vertical Sidebar Navigation --- */
.hk-sidebar {
  width: 240px;
  min-height: 100vh;
  background-color: #ffffff;
  border-right: 1px solid #d8e4cc;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 100;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.hk-sidebar-header {
  padding: 1.5rem 1.2rem;
  border-bottom: 1px solid #d8e4cc;
  background-color: #f0f5ea;
}

.hk-logo {
  font-size: 1.15rem;
  font-weight: 700;
  color: #471206;
  text-decoration: none;
  display: block;
  line-height: 1.3;
}

.hk-logo:hover {
  color: #1e6324;
  text-decoration: none;
}

.hk-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  position: absolute;
  top: 1.2rem;
  right: 1rem;
}

.hk-menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: #471206;
  margin: 5px 0;
  transition: transform 0.3s ease;
}

.hk-nav-list {
  list-style: none;
  padding: 0.8rem 0;
  margin: 0;
}

.hk-nav-list li {
  padding: 0;
}

.hk-nav-list li a {
  display: block;
  padding: 0.7rem 1.4rem;
  color: #1d3f01;
  font-size: 0.95rem;
  font-weight: 500;
  border-left: 3px solid transparent;
  transition: all 0.2s ease;
}

.hk-nav-list li a:hover {
  background-color: #f0f5ea;
  border-left-color: #7f9322;
  color: #7f9322;
  text-decoration: none;
}

.hk-nav-active a {
  background-color: #e8f0dc;
  border-left-color: #324900 !important;
  color: #324900 !important;
  font-weight: 600;
}

/* --- Main Content --- */
.hk-main {
  flex: 1;
  margin-left: 240px;
  max-width: 1100px;
  padding: 0;
}

/* --- Hero Section --- */
.hk-hero {
  position: relative;
  overflow: hidden;
  margin-bottom: 2rem;
}

.hk-hero-img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  display: block;
}

.hk-hero-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(50, 73, 0, 0.85));
  padding: 2.5rem 2rem 1.8rem;
  color: #ffffff;
}

.hk-hero-overlay h1 {
  font-size: 1.8rem;
  margin-bottom: 0.4rem;
  text-shadow: 0 1px 4px rgba(0,0,0,0.3);
  color: #ffffff;
}

.hk-hero-overlay p {
  font-size: 1rem;
  opacity: 0.92;
  max-width: 600px;
}

/* --- Sections --- */
.hk-section {
  padding: 2rem 2rem 2.5rem;
  border-bottom: 1px solid #e4e8da;
}

.hk-section h2 {
  font-size: 1.45rem;
  color: #471206;
  margin-bottom: 1rem;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid #c5e0aa;
}

.hk-section p {
  margin-bottom: 1rem;
  max-width: 780px;
}

/* --- Card Grid --- */
.hk-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 1rem;
}

.hk-card {
  background: #ffffff;
  border: 1px solid #d8e4cc;
  border-radius: 6px;
  overflow: hidden;
  transition: box-shadow 0.25s ease;
}

.hk-card:hover {
  box-shadow: 0 4px 16px rgba(50, 73, 0, 0.12);
}

.hk-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.hk-card h3 {
  font-size: 1.05rem;
  padding: 0.8rem 1rem 0.3rem;
  color: #471206;
  line-height: 1.4;
}

.hk-card h3 a {
  color: #471206;
}

.hk-card h3 a:hover {
  color: #1e6324;
}

.hk-card time {
  display: block;
  padding: 0 1rem;
  font-size: 0.82rem;
  color: #888;
}

.hk-card p {
  padding: 0.5rem 1rem 1rem;
  font-size: 0.9rem;
  color: #555;
}

/* --- Gallery --- */
.hk-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}

.hk-gallery img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 4px;
  border: 1px solid #d8e4cc;
}

/* --- Article --- */
.hk-article {
  padding: 2rem;
  max-width: 800px;
}

.hk-article h1 {
  font-size: 1.65rem;
  color: #471206;
  margin-bottom: 1rem;
  line-height: 1.35;
}

.hk-article h2 {
  font-size: 1.3rem;
  color: #471206;
  margin-top: 2rem;
  margin-bottom: 0.8rem;
  padding-bottom: 0.3rem;
  border-bottom: 2px solid #c5e0aa;
}

.hk-article h3 {
  font-size: 1.1rem;
  color: #324900;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

.hk-article p {
  margin-bottom: 1rem;
  line-height: 1.8;
}

.hk-article ul,
.hk-article ol {
  margin-bottom: 1rem;
}

.hk-article li {
  margin-bottom: 0.4rem;
  line-height: 1.7;
}

.hk-article img {
  margin: 1.5rem 0;
  border-radius: 4px;
  border: 1px solid #d8e4cc;
}

.hk-article-hero {
  width: 100%;
  max-height: 450px;
  object-fit: cover;
  margin-bottom: 1.5rem;
}

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

.hk-article-header time {
  display: block;
  font-size: 0.88rem;
  color: #888;
  margin-top: 0.3rem;
}

.hk-article-body {
  line-height: 1.85;
}

.hk-article-body img {
  max-width: 100%;
  margin: 1.2rem 0;
}

.hk-article-footer {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid #d8e4cc;
  font-size: 0.92rem;
}

.hk-article-footer ul {
  margin-top: 0.5rem;
}

/* --- Contact --- */
.hk-contact-list {
  margin: 1rem 0 2rem;
}

.hk-contact-list dt {
  font-weight: 600;
  color: #324900;
  margin-top: 0.8rem;
}

.hk-contact-list dd {
  margin-left: 0;
  padding-left: 1rem;
  margin-bottom: 0.3rem;
}

/* --- Footer --- */
.hk-footer {
  background-color: #617c0d;
  color: #e8f0dc;
  padding: 2rem 0;
  margin-top: auto;
}

.hk-footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
  margin-left: 240px;
}

.hk-footer-nav ul {
  list-style: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  margin-bottom: 1rem;
}

.hk-footer-nav a {
  color: #e8f0dc;
  font-size: 0.88rem;
}

.hk-footer-nav a:hover {
  color: #ffffff;
}

.hk-copyright {
  font-size: 0.82rem;
  color: #c5e0aa;
  margin-top: 0.8rem;
}

/* --- Responsive: 800px breakpoint --- */
@media (max-width: 800px) {
  .hk-sidebar {
    position: fixed;
    width: 100%;
    min-height: auto;
    border-right: none;
    border-bottom: 1px solid #d8e4cc;
    z-index: 200;
  }

  .hk-sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.2rem;
  }

  .hk-menu-toggle {
    display: block;
  }

  .hk-nav-list {
    display: none;
    border-top: 1px solid #d8e4cc;
  }

  .hk-nav-list.hk-nav-open {
    display: block;
  }

  .hk-main {
    margin-left: 0;
    margin-top: 60px;
    max-width: 100%;
  }

  .hk-hero-img {
    height: 280px;
  }

  .hk-hero-overlay h1 {
    font-size: 1.4rem;
  }

  .hk-section {
    padding: 1.5rem 1.2rem 2rem;
  }

  .hk-article {
    padding: 1.5rem 1.2rem;
  }

  .hk-footer-inner {
    margin-left: 0;
  }

  .hk-card-grid {
    grid-template-columns: 1fr;
  }

  .hk-gallery {
    grid-template-columns: 1fr 1fr;
  }
}

/* --- Responsive: 500px breakpoint --- */
@media (max-width: 500px) {
  html {
    font-size: 15px;
  }

  .hk-hero-img {
    height: 200px;
  }

  .hk-hero-overlay {
    padding: 1.5rem 1rem 1rem;
  }

  .hk-hero-overlay h1 {
    font-size: 1.2rem;
  }

  .hk-hero-overlay p {
    font-size: 0.88rem;
  }

  .hk-section {
    padding: 1rem;
  }

  .hk-section h2 {
    font-size: 1.2rem;
  }

  .hk-article {
    padding: 1rem;
  }

  .hk-article h1 {
    font-size: 1.3rem;
  }

  .hk-article h2 {
    font-size: 1.1rem;
  }

  .hk-gallery {
    grid-template-columns: 1fr;
  }

  .hk-card img {
    height: 150px;
  }

  .hk-footer-nav ul {
    flex-direction: column;
    gap: 0.4rem;
  }

  .hk-article-hero {
    max-height: 250px;
  }
}

/* --- Utility --- */
.hk-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* --- Print --- */
@media print {
  .hk-sidebar,
  .hk-menu-toggle,
  .hk-footer {
    display: none;
  }

  .hk-main {
    margin-left: 0;
  }

  body {
    font-size: 12pt;
    color: #000;
    background: #fff;
  }
}