/*
Theme Name: Discipline Design
Theme URI: https://discipline-design.org
Author: Society of Discipline Design Science
Description: Academic theme for Society of Discipline Design Science
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.7
Requires PHP: 7.4
Text Domain: discipline-design
*/

@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+JP:wght@300;400;500;700&display=swap');

/* ===== CSS Variables ===== */
:root {
  --bg-main: #0d0d0d;
  --bg-header: #070707;
  --bg-content: #111111;
  --bg-card: #191919;
  --text-primary: #ddd5c5;
  --text-secondary: #9a9085;
  --text-heading: #e8dccc;
  --accent-gold: #c8a84a;
  --accent-gold-light: #d9bb6a;
  --accent-blue: #4a7ec4;
  --accent-blue-light: #6a9ed4;
  --border-dark: #222018;
  --border-accent: rgba(200, 168, 74, 0.4);
  --max-width: 960px;
  --font-serif: 'Noto Serif JP', 'Yu Mincho', 'YuMincho', '游明朝', 'HGS明朝E', serif;
  --font-sans: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', sans-serif;
}

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--bg-main);
  color: var(--text-primary);
  font-family: var(--font-serif);
  line-height: 1.9;
  font-weight: 400;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-heading);
  font-family: var(--font-serif);
  font-weight: 500;
  line-height: 1.5;
}

h1 { font-size: 2rem; }
h2 { font-size: 1.6rem; }
h3 { font-size: 1.3rem; }

p {
  margin-bottom: 1.4em;
}

a {
  color: var(--accent-blue-light);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--accent-gold-light);
  text-decoration: underline;
}

/* ===== Layout ===== */
.site-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
  width: 100%;
}

/* ===== Header ===== */
.site-header {
  background: var(--bg-header);
  border-bottom: 1px solid var(--border-dark);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 16px rgba(0,0,0,0.6);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.site-branding {
  padding: 1.5rem 0 0.8rem;
  text-align: center;
}

.site-title {
  font-size: 1.35rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  margin: 0;
}

.site-title a {
  color: var(--accent-gold);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 1rem;
  justify-content: center;
}

.site-title a:hover {
  color: var(--accent-gold-light);
  text-decoration: none;
}

.site-title-en {
  font-size: 0.75rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
  display: block;
  margin-top: 0.2rem;
  font-family: 'Georgia', serif;
}

/* ===== Navigation ===== */
.site-nav {
  width: 100%;
  border-top: 1px solid var(--border-dark);
}

.nav-menu {
  list-style: none;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0;
  margin: 0;
  padding: 0;
}

.nav-menu li {
  position: relative;
}

.nav-menu li a {
  display: block;
  padding: 0.75rem 1.2rem;
  color: var(--text-secondary);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-decoration: none;
  transition: color 0.2s ease, background 0.2s ease;
  position: relative;
}

.nav-menu li a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--accent-gold);
  transition: width 0.2s ease;
}

.nav-menu li a:hover,
.nav-menu li.current-menu-item a,
.nav-menu li.current-page-item a {
  color: var(--accent-gold-light);
  text-decoration: none;
  background: rgba(200, 168, 74, 0.06);
}

.nav-menu li a:hover::after,
.nav-menu li.current-menu-item a::after,
.nav-menu li.current-page-item a::after {
  width: 60%;
}

/* ===== Mobile menu toggle ===== */
.menu-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-accent);
  color: var(--accent-gold);
  padding: 0.5rem 1rem;
  cursor: pointer;
  font-family: var(--font-serif);
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  margin: 0.5rem 0;
}

/* ===== Main Content ===== */
.site-main {
  flex: 1;
  padding: 3.5rem 0;
}

.content-area {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

/* ===== Page ===== */
.page-header {
  margin-bottom: 2.5rem;
  padding-bottom: 1.2rem;
  border-bottom: 1px solid var(--border-dark);
  position: relative;
}

.page-header::before {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 3rem;
  height: 2px;
  background: var(--accent-gold);
}

.page-title {
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--accent-gold-light);
  letter-spacing: 0.1em;
}

.entry-content {
  font-size: 0.975rem;
  line-height: 2;
}

.entry-content p {
  margin-bottom: 1.5em;
}

/* ===== Front Page ===== */
.front-page-hero {
  padding: 2.5rem 0 2rem;
  border-bottom: 1px solid var(--border-dark);
  margin-bottom: 3rem;
  text-align: center;
}

.hero-title {
  font-size: 1.7rem;
  color: var(--accent-gold);
  letter-spacing: 0.15em;
  margin-bottom: 0.5rem;
}

.hero-subtitle {
  font-size: 0.85rem;
  color: var(--text-secondary);
  letter-spacing: 0.12em;
  font-style: italic;
  font-family: 'Georgia', serif;
}

.hero-divider {
  width: 4rem;
  height: 1px;
  background: var(--accent-gold);
  margin: 1.5rem auto;
  opacity: 0.6;
}

/* ===== Society Info Table ===== */
.info-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin-top: 2rem;
}

.info-table th,
.info-table td {
  padding: 0.75rem 1.2rem;
  text-align: left;
  border-bottom: 1px solid var(--border-dark);
  vertical-align: top;
}

.info-table th {
  color: var(--accent-gold);
  font-weight: 500;
  width: 8rem;
  white-space: nowrap;
}

.info-table td {
  color: var(--text-primary);
}

/* ===== Officers Table ===== */
.officers-list {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  margin-top: 1rem;
}

.officers-list th {
  background: rgba(200, 168, 74, 0.1);
  color: var(--accent-gold);
  padding: 0.7rem 1.2rem;
  text-align: left;
  font-weight: 500;
  border-bottom: 1px solid var(--border-accent);
}

.officers-list td {
  padding: 0.85rem 1.2rem;
  border-bottom: 1px solid var(--border-dark);
  color: var(--text-primary);
}

.officers-list tr:last-child td {
  border-bottom: none;
}

/* ===== Publications ===== */
.publication-item {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border-dark);
}

.publication-item:last-child {
  border-bottom: none;
}

.publication-title {
  font-size: 1.05rem;
  color: var(--accent-gold-light);
  font-weight: 500;
  margin-bottom: 0.3rem;
}

.publication-title-en {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-style: italic;
  font-family: 'Georgia', serif;
  margin-bottom: 0.8rem;
}

/* ===== Submission Guide ===== */
.submission-note {
  background: rgba(74, 126, 196, 0.1);
  border-left: 3px solid var(--accent-blue);
  padding: 1rem 1.5rem;
  margin: 1.5rem 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.placeholder-text {
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-style: italic;
}

/* ===== Contact ===== */
.contact-link-box {
  text-align: center;
  padding: 3rem 2rem;
  border: 1px solid var(--border-accent);
  background: var(--bg-card);
  margin-top: 1.5rem;
}

.contact-link-box p {
  margin-bottom: 1.5rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.btn-contact {
  display: inline-block;
  padding: 0.85rem 2.5rem;
  background: transparent;
  border: 1px solid var(--accent-blue);
  color: var(--accent-blue-light);
  font-family: var(--font-serif);
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.25s ease;
}

.btn-contact:hover {
  background: var(--accent-blue);
  color: #ffffff;
  text-decoration: none;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-header);
  border-top: 1px solid var(--border-dark);
  padding: 2rem;
  text-align: center;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--text-secondary);
  letter-spacing: 0.06em;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .header-inner {
    padding: 0 1.2rem;
  }

  .site-branding {
    padding: 1rem 0 0.5rem;
    width: 100%;
  }

  .site-title a {
    flex-direction: column;
    gap: 0.3rem;
  }

  .menu-toggle {
    display: block;
  }

  .nav-menu {
    flex-direction: column;
    display: none;
    border-top: 1px solid var(--border-dark);
  }

  .nav-menu.is-open {
    display: flex;
  }

  .nav-menu li a {
    padding: 0.8rem 1.2rem;
    border-bottom: 1px solid var(--border-dark);
    text-align: center;
  }

  .nav-menu li a::after {
    display: none;
  }

  .site-main {
    padding: 2rem 0;
  }

  .content-area {
    padding: 0 1.2rem;
  }

  h1 { font-size: 1.5rem; }
  h2 { font-size: 1.3rem; }

  .info-table th {
    width: 6rem;
  }

  .contact-link-box {
    padding: 2rem 1rem;
  }
}

@media (max-width: 480px) {
  .content-area {
    padding: 0 1rem;
  }
}