/* =========================
   CACo Seminar Page
   Toho blue version
========================= */

html {
  font-size: 100%;
}

body {
  margin: 0;
  padding: 0;
  color: #1d2b36;
  background: #eef5fb;
  font-family:
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    "Helvetica Neue",
    "Hiragino Sans",
    "Yu Gothic",
    "YuGothic",
    "Noto Sans JP",
    sans-serif;
  line-height: 1.7;
  overflow-wrap: break-word;
}

a {
  color: #005bac;
  text-decoration: none;
}

a:hover,
a:active {
  color: #d35400;
  text-decoration: underline;
}

/* =========================
   Header
========================= */

.seminar-header {
  background: linear-gradient(135deg, #003f7f, #0072bc);
  color: white;
  padding: 3.5em 1.5em 3em;
}

.seminar-header-inner {
  max-width: 1050px;
  margin: 0 auto;
}

.site-label {
  margin: 0 0 0.8em;
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.9;
}

.seminar-header h1 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 3.2rem);
  line-height: 1.25;
}

.seminar-description {
  max-width: 850px;
  margin: 1.2em 0 0;
  font-size: 1.05rem;
}

/* =========================
   Navigation
========================= */

.seminar-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  background: #ffffff;
  border-bottom: 1px solid #b8d4e8;
  box-shadow: 0 2px 8px rgba(0, 63, 127, 0.08);
}

.seminar-nav a {
  display: block;
  padding: 0.9em 1.4em;
  color: #003f7f;
  font-weight: 700;
}

.seminar-nav a:hover {
  background: #e4f1fb;
  text-decoration: none;
}

.seminar-nav a.current {
  color: white;
  background: #005bac;
}

/* =========================
   Main
========================= */

.seminar-main {
  max-width: 1050px;
  margin: 0 auto;
  padding: 2em 1.2em 3em;
  box-sizing: border-box;
}

.seminar-card {
  margin: 1.4em 0;
  padding: 1.5em;
  background: white;
  border-left: 6px solid #005bac;
  border-radius: 12px;
  box-shadow: 0 4px 16px rgba(0, 63, 127, 0.10);
}

.section-heading {
  margin-bottom: 1em;
}

.section-label {
  margin: 0 0 0.15em;
  color: #005bac;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.section-heading h2 {
  margin: 0;
  font-size: 1.6rem;
}

.seminar-number {
  display: inline-block;
  margin-bottom: 1em;
  padding: 0.25em 0.8em;
  color: white;
  background: #005bac;
  border-radius: 999px;
  font-weight: 700;
}

.registration-note {
  margin: 0 0 1.2em;
  padding: 0.9em 1em;
  background: #eaf5ff;
  border-radius: 8px;
}

/* =========================
   Seminar info
========================= */

.seminar-info {
  margin: 0;
}

.seminar-info div {
  display: grid;
  grid-template-columns: 6em 1fr;
  gap: 1em;
  padding: 0.6em 0;
  border-bottom: 1px solid #d5e7f5;
}

.seminar-info div:last-child {
  border-bottom: none;
}

.seminar-info dt {
  font-weight: 700;
  color: #005bac;
}

.seminar-info dd {
  margin: 0;
}

/* =========================
   Program
========================= */

.program-list {
  margin-top: 0.5em;
}

.program-item {
  display: grid;
  grid-template-columns: 9em 1fr;
  gap: 1em;
  padding: 0.65em 0;
  border-bottom: 1px solid #d5e7f5;
}

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

.program-time {
  font-weight: 700;
  color: #005bac;
}

.program-content {
  font-weight: 500;
}

/* =========================
   Grid sections
========================= */

.seminar-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.4em;
}

.seminar-grid .seminar-card {
  margin: 0;
}

/* =========================
   Lists
========================= */

.simple-list,
.support-list {
  margin: 0;
  padding-left: 1.2em;
}

.simple-list li,
.support-list li {
  margin: 0.5em 0;
}

/* =========================
   Footer
========================= */

.seminar-footer {
  padding: 1.2em;
  text-align: center;
  color: #475c6d;
  border-top: 1px solid #b8d4e8;
}

/* =========================
   MathJax
========================= */

mjx-container {
  max-width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
}

/* =========================
   Responsive
========================= */

@media screen and (max-width: 720px) {
  .seminar-header {
    padding: 2.2em 1em 2em;
  }

  .seminar-description {
    font-size: 1rem;
  }

  .seminar-nav {
    position: static;
  }

  .seminar-nav a {
    flex: 1 1 50%;
    padding: 0.75em 0.4em;
    text-align: center;
    box-sizing: border-box;
  }

  .seminar-main {
    padding: 1.2em 0.85em 2em;
  }

  .seminar-card {
    padding: 1.1em;
    border-left-width: 4px;
    border-radius: 10px;
  }

  .section-heading h2 {
    font-size: 1.35rem;
  }

  .seminar-info div,
  .program-item {
    display: block;
  }

  .seminar-info dt,
  .program-time {
    display: block;
    margin-bottom: 0.2em;
  }

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

/* =========================
   Past seminar page
========================= */

.compact-header {
  padding-top: 2.5em;
  padding-bottom: 2.2em;
}

.past-seminar-card {
  margin: 1.4em 0;
  padding: 1.5em;
  background: white;
  border-left: 6px solid #005bac;
  border-radius: 12px;
  box-shadow: 0 4px 16px rgba(0, 63, 127, 0.10);
}

.past-seminar-card h2 {
  margin: 0 0 0.8em;
  color: #003f7f;
  font-size: 1.45rem;
}

.past-seminar-card h3 {
  margin: 1.2em 0 0.4em;
  color: #005bac;
  font-size: 1.1rem;
}

.past-seminar-card p {
  margin: 0.5em 0;
}

.talk-block {
  margin: 1.2em 0;
  padding: 1em;
  background: #f4f9fd;
  border-left: 4px solid #0072bc;
  border-radius: 8px;
}

.talk-block h3 {
  margin-top: 0;
}

.talk-time {
  color: #005bac;
  font-weight: 700;
}

.talk-title {
  font-weight: 700;
}

.abstract-list {
  margin: 0.8em 0 0;
  padding-left: 1.5em;
}

.abstract-list li {
  margin: 0.4em 0;
}

@media screen and (max-width: 720px) {
  .compact-header {
    padding-top: 1.8em;
    padding-bottom: 1.6em;
  }

  .past-seminar-card {
    padding: 1.1em;
    border-left-width: 4px;
    border-radius: 10px;
  }

  .past-seminar-card h2 {
    font-size: 1.3rem;
  }

  .talk-block {
    padding: 0.85em;
  }
}

/* =========================
   Materials page
========================= */

.materials-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1em;
}

.material-card {
  padding: 1.2em 1.4em;
  background: white;
  border-left: 6px solid #005bac;
  border-radius: 12px;
  box-shadow: 0 4px 16px rgba(0, 63, 127, 0.10);
}

.material-head {
  display: flex;
  justify-content: space-between;
  gap: 1em;
  align-items: center;
  margin-bottom: 0.6em;
}

.material-head h2 {
  margin: 0;
  color: #003f7f;
  font-size: 1.35rem;
}

.material-button {
  flex: 0 0 auto;
  display: inline-block;
  padding: 0.4em 0.9em;
  color: white;
  background: #005bac;
  border-radius: 999px;
  font-weight: 700;
}

.material-button:link,
.material-button:visited {
  color: white;
}

.material-button:hover {
  color: white;
  background: #003f7f;
  text-decoration: none;
}

.speaker {
  margin: 0.3em 0;
  color: #005bac;
  font-weight: 700;
}

.material-title {
  margin: 0.3em 0 0;
  line-height: 1.6;
}

.check-link {
  border-left-color: #d35400;
}

@media screen and (max-width: 720px) {
  .material-card {
    padding: 1em;
    border-left-width: 4px;
  }

  .material-head {
    display: block;
  }

  .material-button {
    margin-top: 0.5em;
  }
}

/* =========================
   Access page
========================= */

.access-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.4em;
}

.access-card {
  padding: 1.4em;
  background: white;
  border-left: 6px solid #005bac;
  border-radius: 12px;
  box-shadow: 0 4px 16px rgba(0, 63, 127, 0.10);
}

.access-card-head {
  display: flex;
  justify-content: space-between;
  gap: 1em;
  align-items: center;
  margin-bottom: 0.8em;
}

.access-card-head h2 {
  margin: 0;
  color: #003f7f;
  font-size: 1.35rem;
}

.access-button {
  flex: 0 0 auto;
  display: inline-block;
  padding: 0.4em 0.9em;
  color: white;
  background: #005bac;
  border-radius: 999px;
  font-weight: 700;
}

.access-button:link,
.access-button:visited {
  color: white;
}

.access-button:hover {
  color: white;
  background: #003f7f;
  text-decoration: none;
}

.access-list {
  margin: 0;
  padding-left: 1.2em;
}

.access-list li {
  margin: 0.6em 0;
}

@media screen and (max-width: 720px) {
  .access-grid {
    grid-template-columns: 1fr;
  }

  .access-card {
    padding: 1.1em;
    border-left-width: 4px;
  }

  .access-card-head {
    display: block;
  }

  .access-button {
    margin-top: 0.6em;
  }
}

/* =========================
   Button Link
   Inline rounded link button
========================= */

.button-link {
  display: inline-block;
  margin: 0 0.15em;
  padding: 0.18em 0.65em;
  color: #005bac;
  background: #eef6ff;
  border: 1px solid #9fc5e8;
  border-radius: 999px;
  font-size: 0.95em;
  font-weight: 700;
  line-height: 1.45;
  text-decoration: none;
  vertical-align: baseline;
}

.button-link:link,
.button-link:visited {
  color: #005bac;
}

.button-link:hover,
.button-link:active {
  color: #003f7f;
  background: #dceeff;
  border-color: #005bac;
  text-decoration: none;
}