/* =========================================================
   皇太神宮 (北方皇太神宮) ホームページ共通スタイル
   ========================================================= */

:root {
  --color-main:   #5b2c6f; /* 深紫 */
  --color-accent: #c9a84c; /* 金箔 */
  --color-bg:     #f5f1ea; /* 生成り */
  --color-text:   #2c2820; /* 深墨 */
  --color-sub:    #8a7a8a; /* 薄紫 */

  --font-serif: 'Noto Serif JP', serif;
  --font-sans:  'Noto Sans JP', sans-serif;

  --header-height: 76px;
  --transition: 0.25s ease;
}

/* ---------- reset ---------- */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.9;
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
}

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: 1.5;
}

.container {
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

main {
  padding-top: var(--header-height);
}

section {
  padding: 80px 0;
}

.section-en {
  display: block;
  font-family: var(--font-serif);
  letter-spacing: 0.25em;
  color: var(--color-accent);
  font-size: 0.85rem;
  text-align: center;
  margin-bottom: 12px;
}

.section-title {
  text-align: center;
  font-size: 1.9rem;
  letter-spacing: 0.15em;
  color: var(--color-main);
  margin-bottom: 48px;
}

.section-title.tight {
  letter-spacing: 0.4em;
}

/* ---------- header ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background: var(--color-main);
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  height: 100%;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  height: 100%;
}

.logo img {
  height: 44px;
  width: auto;
  filter: brightness(0) invert(1);
}

.main-nav ul {
  display: flex;
  gap: 36px;
}

.main-nav a {
  color: var(--color-accent);
  font-family: var(--font-serif);
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  padding: 8px 2px;
  position: relative;
  transition: opacity var(--transition);
}

.main-nav a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background: var(--color-accent);
  transition: width var(--transition);
}

.main-nav a:hover::after,
.main-nav a.active::after {
  width: 100%;
}

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 22px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 1100;
  padding: 0;
}

.hamburger span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--color-accent);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.hamburger.is-open span:nth-child(1) {
  transform: translateY(10px) rotate(45deg);
}

.hamburger.is-open span:nth-child(2) {
  opacity: 0;
}

.hamburger.is-open span:nth-child(3) {
  transform: translateY(-10px) rotate(-45deg);
}

/* ---------- hero ---------- */
.hero {
  position: relative;
  height: 88vh;
  min-height: 480px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-size: cover;
  background-position: center;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(91, 44, 111, 0.55);
}

.hero-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  color: #fff;
  padding: 0 20px;
}

.hero-crest {
  width: 64px;
  height: auto;
  margin: 0 auto 20px;
  filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.35));
}

.hero-en {
  display: block;
  font-family: var(--font-serif);
  letter-spacing: 0.3em;
  font-size: 0.85rem;
  color: var(--color-accent);
  margin-bottom: 18px;
}

.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  letter-spacing: 0.2em;
  margin-bottom: 14px;
}

.hero-sub {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  letter-spacing: 0.15em;
  color: #f0e6d2;
  margin-bottom: 36px;
}

.hero-page .hero-title {
  font-size: clamp(2rem, 4.4vw, 2.8rem);
  letter-spacing: 0.12em;
}

.hero-buttons {
  display: flex;
  gap: 18px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- buttons ---------- */
.btn {
  display: inline-block;
  padding: 14px 32px;
  font-family: var(--font-serif);
  font-size: 0.95rem;
  letter-spacing: 0.1em;
  border: 1px solid var(--color-accent);
  border-radius: 2px;
  transition: background var(--transition), color var(--transition);
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-main);
}

.btn-primary:hover {
  background: transparent;
  color: var(--color-accent);
}

.btn-outline {
  background: transparent;
  color: #fff;
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.15);
}

/* ---------- 御祭神セクション ---------- */
.deity-section {
  background: #fff;
  text-align: center;
}

.deity-section p {
  max-width: 640px;
  margin: 0 auto;
  color: var(--color-text);
}

.deity-name {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--color-main);
  letter-spacing: 0.1em;
  margin-bottom: 10px;
}

.deity-era {
  color: var(--color-sub);
  font-size: 0.95rem;
  margin-top: 14px;
}

/* ---------- 四季セクション ---------- */
.season-section {
  background: var(--color-bg);
}

.season-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.season-card {
  position: relative;
  border-radius: 4px;
  overflow: hidden;
  aspect-ratio: 3 / 4;
}

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

.season-card:hover img {
  transform: scale(1.06);
}

.season-label {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 18px 0 14px;
  text-align: center;
  font-family: var(--font-serif);
  font-size: 1.2rem;
  letter-spacing: 0.3em;
  color: #fff;
  background: linear-gradient(to top, rgba(44, 40, 32, 0.75), transparent);
}

/* ---------- ナビカード ---------- */
.navcard-section {
  background: #fff;
}

.navcard-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.navcard {
  display: block;
  border: 1px solid #e5ddcc;
  border-radius: 4px;
  overflow: hidden;
  background: var(--color-bg);
  transition: box-shadow var(--transition), transform var(--transition);
}

.navcard:hover {
  box-shadow: 0 10px 24px rgba(91, 44, 111, 0.15);
  transform: translateY(-4px);
}

.navcard-img {
  height: 180px;
  overflow: hidden;
}

.navcard-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.navcard-body {
  padding: 22px 20px;
  text-align: center;
}

.navcard-en {
  display: block;
  font-family: var(--font-serif);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.navcard-title {
  font-size: 1.15rem;
  color: var(--color-main);
  letter-spacing: 0.1em;
}

/* ---------- お知らせ ---------- */
.news-section {
  background: var(--color-bg);
}

.news-list {
  max-width: 760px;
  margin: 0 auto;
  border-top: 1px solid #d9cdb5;
}

.news-item {
  display: flex;
  gap: 28px;
  padding: 22px 4px;
  border-bottom: 1px solid #d9cdb5;
}

.news-date {
  flex: none;
  color: var(--color-sub);
  font-family: var(--font-serif);
  letter-spacing: 0.05em;
}

.news-text {
  color: var(--color-text);
}

/* ---------- Instagram ---------- */
.instagram-section {
  background: var(--color-main);
  color: #fff;
  text-align: center;
}

.instagram-section .section-title {
  color: #fff;
}

.instagram-icon {
  width: 44px;
  height: 44px;
  margin: 0 auto 20px;
  fill: var(--color-accent);
}

.instagram-section p {
  color: #ece4f0;
  max-width: 520px;
  margin: 0 auto 28px;
}

/* ---------- about.html ---------- */
.lead-text {
  background: #fff;
}

.lead-text p {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
  font-size: 1.02rem;
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  max-width: 900px;
  margin: 44px auto 0;
  border-top: 1px solid #e5ddcc;
  border-left: 1px solid #e5ddcc;
}

.info-item {
  border-right: 1px solid #e5ddcc;
  border-bottom: 1px solid #e5ddcc;
}

.info-item dt {
  background: var(--color-bg);
  font-family: var(--font-serif);
  color: var(--color-main);
  padding: 14px 16px;
  border-bottom: 1px solid #e5ddcc;
  font-size: 0.9rem;
}

.info-item dd {
  padding: 16px;
  font-size: 0.95rem;
}

.content-section:nth-child(odd) {
  background: #fff;
}

.content-inner {
  max-width: 820px;
  margin: 0 auto;
}

.content-heading {
  margin-bottom: 24px;
}

.content-heading .section-en {
  text-align: left;
  margin-bottom: 8px;
}

.content-heading h3 {
  font-size: 1.5rem;
  color: var(--color-main);
  letter-spacing: 0.08em;
}

.content-section p {
  margin-bottom: 18px;
}

.history-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
}

.history-table th,
.history-table td {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid #e5ddcc;
  vertical-align: top;
}

.history-table th {
  width: 130px;
  font-family: var(--font-serif);
  color: var(--color-main);
  font-weight: 700;
  white-space: nowrap;
}

.highlight-box {
  background: var(--color-bg);
  border-left: 4px solid var(--color-accent);
  padding: 24px 28px;
  margin-top: 24px;
  font-family: var(--font-serif);
  color: var(--color-main);
  font-size: 1.02rem;
  line-height: 1.9;
}

.shrine-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 20px;
}

.shrine-card {
  background: var(--color-bg);
  padding: 26px;
  border-radius: 4px;
  border: 1px solid #e5ddcc;
}

.shrine-card h4 {
  color: var(--color-main);
  font-size: 1.1rem;
  margin-bottom: 12px;
  letter-spacing: 0.05em;
}

.shrine-card .deity-list {
  margin-top: 14px;
  font-size: 0.9rem;
  color: var(--color-sub);
}

.closing-section {
  background: var(--color-main);
  color: #f3ecf6;
  text-align: center;
}

.closing-section p {
  max-width: 620px;
  margin: 0 auto;
  font-family: var(--font-serif);
  letter-spacing: 0.05em;
  font-size: 1.05rem;
  line-height: 2.2;
}

/* ---------- prayers.html ---------- */
.prayer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.prayer-card {
  background: #fff;
  border: 1px solid #e5ddcc;
  border-radius: 4px;
  padding: 30px 20px;
  text-align: center;
  font-family: var(--font-serif);
  color: var(--color-main);
  letter-spacing: 0.08em;
  transition: box-shadow var(--transition), transform var(--transition);
}

.prayer-card:hover {
  box-shadow: 0 10px 24px rgba(91, 44, 111, 0.15);
  transform: translateY(-4px);
}

.info-table-section {
  background: #fff;
}

.info-table {
  max-width: 760px;
  margin: 0 auto;
  width: 100%;
  border-collapse: collapse;
}

.info-table th,
.info-table td {
  text-align: left;
  padding: 16px 20px;
  border-bottom: 1px solid #e5ddcc;
}

.info-table th {
  width: 200px;
  font-family: var(--font-serif);
  color: var(--color-main);
  background: var(--color-bg);
}

.ceremony-list {
  max-width: 640px;
  margin: 0 auto;
}

.ceremony-list li {
  padding: 14px 0;
  border-bottom: 1px dashed #d9cdb5;
  font-size: 1rem;
}

.ceremony-list li:first-child {
  padding-top: 0;
}

/* ---------- access.html ---------- */
.access-info-list {
  max-width: 680px;
  margin: 0 auto;
}

.access-info-list li {
  display: flex;
  gap: 24px;
  padding: 16px 0;
  border-bottom: 1px solid #e5ddcc;
}

.access-info-list .label {
  flex: none;
  width: 110px;
  font-family: var(--font-serif);
  color: var(--color-main);
}

.map-placeholder {
  max-width: 900px;
  margin: 0 auto;
  height: 400px;
  background: #e5ddcc;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-sub);
  font-family: var(--font-serif);
  letter-spacing: 0.1em;
  overflow: hidden;
}

.map-placeholder iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

.transport-section {
  background: #fff;
}

.transport-list {
  max-width: 760px;
  margin: 0 auto;
}

.transport-list li {
  padding: 18px 0;
  border-bottom: 1px solid #e5ddcc;
}

.transport-list .line {
  display: block;
  font-family: var(--font-serif);
  color: var(--color-main);
  margin-bottom: 4px;
  letter-spacing: 0.03em;
}

/* ---------- contact.html ---------- */
.contact-tel {
  text-align: center;
  margin-bottom: 40px;
  font-family: var(--font-serif);
  color: var(--color-main);
  font-size: 1.1rem;
}

.contact-tel span {
  font-size: 1.6rem;
  letter-spacing: 0.05em;
}

.contact-form {
  max-width: 640px;
  margin: 0 auto;
  display: grid;
  gap: 22px;
}

.form-group label {
  display: block;
  font-family: var(--font-serif);
  color: var(--color-main);
  margin-bottom: 8px;
  font-size: 0.95rem;
}

.form-group .required {
  color: #b23b3b;
  font-size: 0.75rem;
  margin-left: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  border: 1px solid #d9cdb5;
  border-radius: 3px;
  background: #fff;
  color: var(--color-text);
}

.form-group textarea {
  min-height: 160px;
  resize: vertical;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-main);
}

.form-submit {
  text-align: center;
  margin-top: 10px;
}

.form-submit button {
  font-family: var(--font-serif);
  font-size: 1rem;
  letter-spacing: 0.15em;
  padding: 14px 48px;
  background: var(--color-main);
  color: #fff;
  border: none;
  border-radius: 2px;
  cursor: pointer;
  transition: background var(--transition);
}

.form-submit button:hover {
  background: #472357;
}

.form-submit button:disabled {
  opacity: 0.6;
  cursor: default;
}

.form-message {
  margin-top: 20px;
  padding: 16px;
  text-align: center;
  border-radius: 2px;
  font-size: 0.95rem;
  line-height: 1.7;
}

.form-message.is-success {
  background: #eef4ea;
  color: #3a5a2c;
}

.form-message.is-error {
  background: #f6e9e9;
  color: #7a2c2c;
}

/* ---------- privacy.html ---------- */
.policy-list {
  margin-bottom: 18px;
}

.policy-list li {
  position: relative;
  padding-left: 1.3em;
  margin-bottom: 8px;
}

.policy-list li::before {
  content: "・";
  position: absolute;
  left: 0;
}

/* ---------- footer ---------- */
.site-footer {
  background: var(--color-text);
  color: #cfc8bb;
  padding: 48px 24px;
  text-align: center;
}

.footer-name {
  font-family: var(--font-serif);
  color: #fff;
  font-size: 1.2rem;
  letter-spacing: 0.2em;
  margin-bottom: 14px;
}

.site-footer p {
  font-size: 0.85rem;
  margin-bottom: 6px;
}

.footer-links {
  margin-top: 14px;
}

.footer-links a {
  color: #cfc8bb;
  text-decoration: underline;
  font-size: 0.85rem;
}

.footer-links a:hover {
  color: #fff;
}

.footer-copyright {
  margin-top: 18px;
  color: #8a8175;
  font-size: 0.75rem;
}

/* =========================================================
   レスポンシブ
   ========================================================= */
@media (max-width: 900px) {
  .season-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .navcard-grid {
    grid-template-columns: 1fr;
  }

  .info-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .prayer-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .shrine-cards {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .logo img {
    height: 32px;
  }

  .hamburger {
    display: flex;
  }

  .main-nav {
    position: fixed;
    top: var(--header-height);
    right: 0;
    width: 240px;
    height: calc(100vh - var(--header-height));
    background: var(--color-main);
    transform: translateX(100%);
    transition: transform var(--transition);
    box-shadow: -4px 0 16px rgba(0, 0, 0, 0.2);
  }

  .main-nav.is-open {
    transform: translateX(0);
  }

  .main-nav ul {
    flex-direction: column;
    gap: 0;
    padding: 24px;
  }

  .main-nav a {
    display: block;
    padding: 16px 4px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  section {
    padding: 56px 0;
  }

  .season-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .prayer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .info-table th {
    width: 130px;
  }

  .access-info-list li,
  .form-group {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .season-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .prayer-grid {
    grid-template-columns: 1fr;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .history-table th {
    width: 90px;
  }
}