/* Japanese minimalist (Wa-style) */

body {
    margin: 0;
    font-family: "Hiragino Kaku Gothic ProN", 
                 "Yu Gothic", 
                 "Noto Sans JP", 
                 Arial, sans-serif;
    background-color: #fafafa;
    color: #222;
}

.container {
    max-width: 780px;
    margin: 60px auto;
    padding: 0 20px;
}

header {
    margin-bottom: 40px;
}

h1 {
    font-size: 34px;
    font-weight: 500;
    letter-spacing: 1px;
    margin-bottom: 5px;
}

.subtitle {
    font-size: 14px;
    color: #666;
}

nav {
    display: flex;
    gap: 25px;
    border-bottom: 1px solid #ddd;
    padding-bottom: 10px;
    margin-bottom: 40px;
}

.tab {
    font-size: 14px;
    cursor: pointer;
    padding-bottom: 5px;
    color: #555;
}

.tab.active {
    border-bottom: 2px solid #222;
    color: #000;
}

.tab:hover {
    color: #000;
}

.content {
    display: none;
    animation: fade 0.4s ease-in;
}

.content.active {
    display: block;
}

h2 {
    font-size: 20px;
    font-weight: 500;
    margin-bottom: 15px;
}

p, li {
    font-size: 15px;
    line-height: 1.8;
}

ul, ol {
    padding-left: 20px;
}

a {
    color: #444;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

footer {
    margin-top: 80px;
    font-size: 12px;
    color: #888;
    text-align: center;
}

@keyframes fade {
    from { opacity: 0; }
    to { opacity: 1; }
}


.doi-link {
    color: #2f5d8a;        /* calm indigo / academic blue */
    font-size: 13px;
    margin-left: 6px;
}

.doi-link:hover {
    text-decoration: underline;
    color: #1f3c88;
}


.form-group {
  margin-bottom: 15px;
}

.form-group label {
  display: block;
  margin-bottom: 5px;
  font-weight: 500;
}

.form-control {
  width: 100%;
  max-width: 420px;
  padding: 8px 10px;
  font-size: 14px;
  box-sizing: border-box;
}


.pub-links {
  margin-top: 6px;
}

.pub-links {
  margin-top: 6px;
}

.pub-links a {
  display: inline-block;
  padding: 4px 8px;
  margin-right: 6px;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-size: 14px;
  text-decoration: none;
  color: #0044cc;
  background: #f9f9f9;
}

.pub-links a:hover {
  background: #eaeaea;
}

.bibtex-box {
  display: none;
  margin-top: 8px;
  padding: 10px;
  background: #fffde7;
  border: 1px solid #ddd;
  font-size: 13px;
  max-width: 90%;
  overflow-x: auto;
}

.header {
  display: flex;
  align-items: center;
  gap: 20px;
}

.profile-pic {
  width: 110px;
  height: 110px;
  object-fit: cover;
  border-radius: 4px;     /* subtle, not circular */
  border: 1px solid #ddd;
}

.header-text h1 {
  margin: 0;
  font-size: 28px;
  font-weight: 500;
}

.header-text p {
  margin: 4px 0;
}

.subtitle {
  color: #666;
  font-size: 14px;
}