/* ============================================
   奈良発掘ニュース — Main Stylesheet
   Colors: #8b6914 (primary gold), #c4956a (accent terracotta),
           #f7f3ee (bg warm cream), #1a1612 (fg dark), #ece6db (secondary)
   ============================================ */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: #1a1612;
  background-color: #f7f3ee;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: #8b6914;
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: #6d5210;
}

ul {
  list-style: none;
}

.hidden {
  display: none !important;
}

/* --- Typography --- */
h1, h2, h3, h4 {
  font-family: 'Noto Serif JP', serif;
  font-weight: 700;
  color: #1a1612;
  line-height: 1.3;
  text-wrap: balance;
}

h1 { font-size: 1.875rem; }
h2 { font-size: 1.375rem; }
h3 { font-size: 1.125rem; }

@media (min-width: 768px) {
  h1 { font-size: 2.5rem; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.25rem; }
}

/* --- Layout Utilities --- */
.container {
  max-width: 72rem;
  margin: 0 auto;
  padding: 0 1rem;
}

@media (min-width: 1024px) {
  .container { padding: 0 2rem; }
}

.narrow-container {
  max-width: 48rem;
  margin: 0 auto;
  padding: 0 1rem;
}

@media (min-width: 1024px) {
  .narrow-container { padding: 0; }
}

/* --- Site Header --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: rgba(247, 243, 238, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid #d9cfc2;
}

.header-inner {
  max-width: 72rem;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem;
}

@media (min-width: 1024px) {
  .header-inner { padding: 1rem 2rem; }
}

.site-logo {
  font-family: 'Noto Serif JP', serif;
  font-size: 1.25rem;
  font-weight: 700;
  color: #8b6914;
  letter-spacing: -0.025em;
}

@media (min-width: 1024px) {
  .site-logo { font-size: 1.5rem; }
}

.site-logo:hover {
  color: #6d5210;
}

.desktop-nav {
  display: none;
  align-items: center;
  gap: 2rem;
}

@media (min-width: 768px) {
  .desktop-nav { display: flex; }
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: rgba(26, 22, 18, 0.8);
  transition: color 0.2s ease;
}

.nav-link:hover, .nav-link.active {
  color: #8b6914;
}

.mobile-menu-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  border-radius: 0.375rem;
  padding: 0.5rem;
  color: #1a1612;
  cursor: pointer;
}

@media (min-width: 768px) {
  .mobile-menu-btn { display: none; }
}

.mobile-nav {
  border-top: 1px solid #d9cfc2;
  background-color: #f7f3ee;
  padding: 0.5rem 1rem 1rem;
}

@media (min-width: 768px) {
  .mobile-nav { display: none !important; }
}

.mobile-nav ul {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.mobile-nav a {
  display: block;
  border-radius: 0.375rem;
  padding: 0.625rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: rgba(26, 22, 18, 0.8);
  transition: background-color 0.2s ease, color 0.2s ease;
}

.mobile-nav a:hover, .mobile-nav a.active {
  background-color: #ece6db;
  color: #8b6914;
}

/* --- Page Banner (hero for inner pages) --- */
.page-banner {
  background-color: rgba(236, 230, 219, 0.4);
  padding: 3rem 0 3rem;
  text-align: center;
}

@media (min-width: 1024px) {
  .page-banner { padding: 5rem 0 5rem; }
}

.page-banner h1 {
  color: #1a1612;
}

.page-banner p {
  margin-top: 1rem;
  max-width: 36rem;
  margin-left: auto;
  margin-right: auto;
  color: #6b5d4d;
  font-size: 0.9375rem;
  line-height: 1.6;
}

/* --- Article Hero --- */
.article-hero {
  position: relative;
  background-color: #1a1612;
}

.article-hero-img-wrap {
  position: relative;
  overflow: hidden;
}

.article-hero img {
  width: 100%;
  height: 300px;
  object-fit: cover;
}

@media (min-width: 768px) {
  .article-hero img {
    height: 500px;
    border-radius: 0 0 0.75rem 0.75rem;
  }
}

.article-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(26,22,18,0.8), rgba(26,22,18,0.3), transparent);
}

.article-hero-content {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 0 1rem 1.5rem;
}

@media (min-width: 768px) {
  .article-hero-content { padding: 0 2rem 2.5rem; }
}

.article-hero .tag {
  display: inline-block;
  background-color: #8b6914;
  color: #faf8f5;
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: 0.125rem;
}

.article-hero h1 {
  margin-top: 0.75rem;
  color: #faf8f5;
  font-size: 1.5rem;
  line-height: 1.25;
}

@media (min-width: 768px) {
  .article-hero h1 { font-size: 2.25rem; }
}

@media (min-width: 1024px) {
  .article-hero h1 { font-size: 3rem; }
}

.article-hero .subtitle {
  margin-top: 0.5rem;
  max-width: 42rem;
  color: rgba(250,248,245,0.8);
  font-size: 0.875rem;
  line-height: 1.6;
}

@media (min-width: 768px) {
  .article-hero .subtitle { font-size: 1rem; }
}

.article-hero .meta {
  margin-top: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.75rem;
  color: rgba(250,248,245,0.6);
}

/* --- Article Body --- */
.article-body {
  max-width: 48rem;
  margin: 0 auto;
  padding: 2.5rem 1rem;
}

@media (min-width: 1024px) {
  .article-body { padding: 4rem 0; }
}

.article-body h2 {
  margin-top: 2rem;
}

.article-body h2:first-child {
  margin-top: 0;
}

.article-body h3 {
  margin-top: 2rem;
}

.article-body p {
  margin-top: 1rem;
  color: rgba(26,22,18,0.9);
  line-height: 1.7;
}

.article-body ul {
  margin-top: 0.75rem;
  padding-left: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  color: rgba(26,22,18,0.9);
  line-height: 1.7;
}

.article-body ul li {
  list-style-type: disc;
}

.article-body figure {
  margin: 2rem 0;
}

.article-body figure img {
  width: 100%;
  height: 250px;
  object-fit: cover;
  border-radius: 0.5rem;
  box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
}

@media (min-width: 768px) {
  .article-body figure img { height: 420px; }
}

.article-body figcaption {
  margin-top: 0.5rem;
  text-align: center;
  font-size: 0.75rem;
  color: #6b5d4d;
}

.article-body .credit-box {
  margin-top: 2.5rem;
  border-radius: 0.5rem;
  border: 1px solid #d9cfc2;
  background-color: rgba(236,230,219,0.4);
  padding: 1.25rem;
}

.article-body .credit-box h3 {
  margin-top: 0;
}

.article-body .credit-box ul {
  margin-top: 0.5rem;
  padding-left: 0;
  font-size: 0.875rem;
  color: #6b5d4d;
}

.article-body .credit-box ul li {
  list-style: none;
}

/* --- Gallery Section --- */
.gallery-section {
  border-top: 1px solid #d9cfc2;
  background-color: rgba(236,230,219,0.3);
  padding: 2.5rem 0;
}

@media (min-width: 1024px) {
  .gallery-section { padding: 4rem 0; }
}

.gallery-section h2,
.gallery-section > .container > p {
  text-align: center;
}

.gallery-section > .container > p {
  margin-top: 0.5rem;
  max-width: 36rem;
  margin-left: auto;
  margin-right: auto;
  font-size: 0.875rem;
  color: #6b5d4d;
  line-height: 1.6;
}

.gallery-grid {
  display: grid;
  gap: 1rem;
  margin-top: 2rem;
}

@media (min-width: 768px) {
  .gallery-grid { grid-template-columns: repeat(3, 1fr); }
}

.gallery-item {
  overflow: hidden;
  border-radius: 0.5rem;
  box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
}

.gallery-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform 0.3s ease;
}

@media (min-width: 768px) {
  .gallery-item img { height: 280px; }
}

.gallery-item:hover img {
  transform: scale(1.05);
}

/* --- FAQ Section --- */
.faq-section {
  padding: 2.5rem 0;
}

@media (min-width: 1024px) {
  .faq-section { padding: 4rem 0; }
}

.faq-section h2,
.faq-section > .narrow-container > p {
  text-align: center;
}

.faq-section > .narrow-container > p {
  margin-top: 0.5rem;
  max-width: 36rem;
  margin-left: auto;
  margin-right: auto;
  font-size: 0.875rem;
  color: #6b5d4d;
  line-height: 1.6;
}

.faq-list {
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.faq-item {
  border-radius: 0.5rem;
  border: 1px solid #d9cfc2;
  background-color: #ffffff;
  overflow: hidden;
}

.faq-question {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  text-align: left;
  font-size: 0.875rem;
  font-weight: 500;
  color: #1a1612;
  background: none;
  border: none;
  cursor: pointer;
  transition: background-color 0.2s ease;
  font-family: 'Noto Sans JP', sans-serif;
}

.faq-question:hover {
  background-color: rgba(236,230,219,0.5);
}

.faq-question svg {
  flex-shrink: 0;
  width: 1rem;
  height: 1rem;
  color: #6b5d4d;
  transition: transform 0.2s ease;
}

.faq-item.open .faq-question svg {
  transform: rotate(180deg);
}

.faq-answer {
  display: none;
  border-top: 1px solid #d9cfc2;
  padding: 0.75rem 1.25rem 1rem;
  font-size: 0.875rem;
  line-height: 1.6;
  color: #6b5d4d;
}

.faq-item.open .faq-answer {
  display: block;
}

/* --- Contact Page --- */
.contact-grid {
  display: grid;
  gap: 2.5rem;
}

@media (min-width: 1024px) {
  .contact-grid { grid-template-columns: 2fr 3fr; }
}

.contact-info h2 {
  margin-bottom: 1rem;
}

.contact-info-group {
  margin-top: 1.25rem;
}

.contact-info-group h3 {
  font-family: 'Noto Sans JP', sans-serif;
  font-weight: 600;
  font-size: 0.875rem;
}

.contact-info-group p {
  margin-top: 0.25rem;
  font-size: 0.875rem;
  color: #6b5d4d;
  line-height: 1.6;
}

/* --- Forms --- */
.form-group {
  margin-top: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: #1a1612;
  margin-bottom: 0.375rem;
}

.form-group label .required {
  color: #c4956a;
}

.form-group input,
.form-group textarea {
  width: 100%;
  border-radius: 0.375rem;
  border: 1px solid #d9cfc2;
  background-color: #f7f3ee;
  padding: 0.625rem 1rem;
  font-size: 0.875rem;
  font-family: 'Noto Sans JP', sans-serif;
  color: #1a1612;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #6b5d4d;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: #8b6914;
  box-shadow: 0 0 0 1px #8b6914;
}

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

/* --- Buttons --- */
.btn-primary {
  display: inline-block;
  background-color: #8b6914;
  color: #faf8f5;
  border: none;
  border-radius: 0.375rem;
  padding: 0.625rem 2rem;
  font-size: 0.875rem;
  font-weight: 500;
  font-family: 'Noto Sans JP', sans-serif;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.btn-primary:hover {
  background-color: #6d5210;
  color: #faf8f5;
}

.btn-outline {
  display: inline-block;
  background-color: transparent;
  color: #1a1612;
  border: 1px solid #d9cfc2;
  border-radius: 0.375rem;
  padding: 0.625rem 2rem;
  font-size: 0.875rem;
  font-weight: 500;
  font-family: 'Noto Sans JP', sans-serif;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.btn-outline:hover {
  background-color: #ece6db;
}

/* --- Success / Error Messages --- */
.form-success {
  border-radius: 0.5rem;
  border: 1px solid #d9cfc2;
  background-color: rgba(236,230,219,0.4);
  padding: 1.5rem;
  text-align: center;
  margin-top: 1.5rem;
}

.form-success h3 {
  color: #1a1612;
}

.form-success p {
  margin-top: 0.5rem;
  font-size: 0.875rem;
  color: #6b5d4d;
}

.form-error {
  margin-top: 1rem;
  padding: 0.75rem 1rem;
  border-radius: 0.375rem;
  background-color: rgba(179,58,58,0.1);
  border: 1px solid rgba(179,58,58,0.3);
  font-size: 0.875rem;
  color: #b33a3a;
}

/* --- Content Pages (Privacy, Cookies, About) --- */
.content-section {
  max-width: 48rem;
  margin: 0 auto;
  padding: 2.5rem 1rem;
}

@media (min-width: 1024px) {
  .content-section { padding: 4rem 0; }
}

.content-section h2 {
  margin-top: 2rem;
}

.content-section h2:first-child {
  margin-top: 0;
}

.content-section h3 {
  margin-top: 1rem;
}

.content-section p {
  margin-top: 0.75rem;
  color: rgba(26,22,18,0.9);
  line-height: 1.7;
}

.content-section ul {
  margin-top: 0.75rem;
  padding-left: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  color: rgba(26,22,18,0.9);
  line-height: 1.7;
}

.content-section ul li {
  list-style-type: disc;
}

.content-section figure {
  margin: 2rem 0;
}

.content-section figure img {
  width: 100%;
  height: 250px;
  object-fit: cover;
  border-radius: 0.5rem;
  box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
}

@media (min-width: 768px) {
  .content-section figure img { height: 420px; }
}

.info-box {
  margin-top: 1rem;
  border-radius: 0.5rem;
  border: 1px solid #d9cfc2;
  background-color: #ffffff;
  padding: 1.25rem;
}

.info-box p {
  margin-top: 0;
  font-size: 0.875rem;
  line-height: 1.7;
  color: rgba(26,22,18,0.9);
}

/* --- Site Footer --- */
.site-footer {
  border-top: 1px solid #d9cfc2;
  background-color: rgba(236,230,219,0.5);
}

.footer-inner {
  max-width: 72rem;
  margin: 0 auto;
  padding: 3rem 1rem;
}

@media (min-width: 1024px) {
  .footer-inner { padding: 3rem 2rem; }
}

.footer-grid {
  display: grid;
  gap: 2rem;
}

@media (min-width: 768px) {
  .footer-grid { grid-template-columns: repeat(3, 1fr); }
}

.footer-logo {
  font-family: 'Noto Serif JP', serif;
  font-size: 1.125rem;
  font-weight: 700;
  color: #8b6914;
}

.footer-about p {
  margin-top: 0.75rem;
  font-size: 0.875rem;
  line-height: 1.6;
  color: #6b5d4d;
}

.footer-links h3,
.footer-legal h3 {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #1a1612;
}

.footer-links ul,
.footer-legal ul {
  margin-top: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-links a,
.footer-legal a {
  font-size: 0.875rem;
  color: #6b5d4d;
  transition: color 0.2s ease;
}

.footer-links a:hover,
.footer-legal a:hover {
  color: #8b6914;
}

.footer-bottom {
  margin-top: 2.5rem;
  border-top: 1px solid #d9cfc2;
  padding-top: 1.5rem;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.75rem;
  color: #6b5d4d;
}

/* --- Cookie Consent --- */
.cookie-consent {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
  border-top: 1px solid #d9cfc2;
  background-color: #ffffff;
  padding: 1rem;
  box-shadow: 0 -4px 12px rgba(0,0,0,0.1);
}

@media (min-width: 768px) {
  .cookie-consent {
    bottom: 1.5rem;
    left: auto;
    right: 1.5rem;
    max-width: 28rem;
    border-radius: 0.75rem;
    border: 1px solid #d9cfc2;
  }
}

.cookie-consent p {
  font-size: 0.875rem;
  line-height: 1.6;
  color: #1a1612;
}

.cookie-consent a {
  font-weight: 500;
  color: #8b6914;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.cookie-buttons {
  margin-top: 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* --- Contact section on inner pages --- */
.contact-page-content {
  max-width: 56rem;
  margin: 0 auto;
  padding: 2.5rem 1rem;
}

@media (min-width: 1024px) {
  .contact-page-content { padding: 4rem 2rem; }
}

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