/* ==========================================================================
   PIE SIG Theme & Color Palette
   ========================================================================== */
:root {
  /* Core Brand Colors extracted from PIE SIG design */
  --primary-navy: #1C2B36;       /* Main dark headers & dark boxes */
  --burgundy-accent: #7A0C2E;    /* PIE Pod accent & primary titles */
  --accent-orange: #E88548;      /* Warm orange highlights */
  --accent-blue: #4A90E2;        /* Secondary blue accent */

  /* Neutral & Background Colors */
  --bg-lavender: #F4F3F7;        /* Soft page background tint */
  --dark-box-bg: #1C2B36;        /* Dark navy card container background */
  --card-bg: #FFFFFF;            /* Pure white background for light cards */
  --text-dark: #222222;          /* Primary body text color */
  --border-subtle: #D0D5DD;      /* Dividers and card borders */

  /* Text Colors for Dark Containers */
  --lilac-text: #E2E8F0;         /* Secondary text on dark backgrounds */
  --lilac-heading: #FFFFFF;      /* Primary headings on dark backgrounds */
  --text-muted-dark: #A0AEC0;    /* Dates, meta, and muted captions on dark */
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-lavender);
  color: var(--text-dark);
  line-height: 1.5;
}

.site-container {
  max-width: 980px;
  margin: 0 auto;
  padding: 25px 30px;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
  border-bottom: 2px solid var(--border-subtle);
  padding-bottom: 12px;
  padding-right: 25px; /* Spacing on right side of header */
  margin-bottom: 25px;
}

.nav-wrapper {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.header-logo-compact img {
  height: 42px;
  width: auto;
  display: block;
}

/* Desktop Navigation (Horizontal Row) */
.main-nav {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.main-nav a {
  color: var(--text-dark);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.82rem;
  text-transform: uppercase;
  padding-bottom: 4px;
  border-bottom: 3px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--burgundy-accent);
  border-bottom-color: var(--burgundy-accent);
}

/* Hamburger Button (Hidden on Desktop) */
.mobile-nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-dark);
  cursor: pointer;
  padding: 4px;
}

/* ==========================================================================
   1. HERO / INTRO BOX
   ========================================================================== */
.hero-black-box {
  background-color: var(--dark-box-bg);
  border-radius: 8px;
  padding: 30px;
  display: grid;
  grid-template-columns: 1fr 240px;
  gap: 30px;
  align-items: center;
  margin-bottom: 30px;
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(28, 43, 54, 0.15);
}

.hero-intro-text {
  font-size: 0.98rem;
  line-height: 1.6;
  color: var(--lilac-text);
}

.hero-brand-graphic {
  text-align: right;
  border-left: 1px solid rgba(255, 255, 255, 0.15);
  padding-left: 20px;
}

.hero-brand-graphic h1 {
  font-family: "Georgia", serif;
  font-size: 2.8rem;
  color: #ffffff;
  line-height: 0.85;
  font-weight: normal;
}

.hero-brand-graphic h1 span {
  display: block;
  font-size: 1.6rem;
  color: var(--accent-orange);
  text-transform: lowercase;
}

.hero-brand-graphic p {
  font-size: 0.6rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-muted-dark);
  margin-top: 6px;
}

/* ==========================================================================
   2. PODCAST SECTION
   ========================================================================== */
.section-title {
  color: var(--burgundy-accent);
  font-family: "Georgia", serif;
  font-size: 1.6rem;
  font-weight: bold;
  margin-bottom: 12px;
}

.podcast-grid {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 30px;
  align-items: start;
  margin-bottom: 30px;
}

.podcast-player-card {
  background: var(--card-bg);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 15px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.04);
}

.podcast-info-side p {
  font-size: 0.92rem;
  line-height: 1.5;
  margin-bottom: 10px;
}

.pie-pod-text-logo {
  font-family: "Georgia", serif;
  font-size: 2.2rem;
  color: var(--primary-navy);
  line-height: 0.9;
  margin-top: 10px;
}

.pie-pod-text-logo span {
  color: var(--burgundy-accent);
  display: block;
  font-size: 1.5rem;
}

.pie-pod-text-logo sub {
  display: block;
  font-size: 0.6rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-dark);
}

/* ==========================================================================
   3. NEWS BOX
   ========================================================================== */
.news-black-box {
  background-color: var(--dark-box-bg);
  border-radius: 8px;
  padding: 25px 30px;
  margin-bottom: 35px;
  box-shadow: 0 4px 12px rgba(28, 43, 54, 0.15);
}

.news-box-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
  padding-bottom: 12px;
  margin-bottom: 20px;
}

.news-box-header h2 {
  color: #ffffff;
  font-size: 1.4rem;
  font-weight: bold;
  text-transform: uppercase;
}

.news-box-grid {
  display: grid;
  grid-template-columns: 1fr 60px;
  gap: 20px;
}

.news-post-item {
  margin-bottom: 18px;
}

.news-post-item h3 {
  font-size: 1rem;
  font-weight: bold;
  margin-bottom: 2px;
}

.news-post-item h3 a {
  color: var(--lilac-heading);
  text-decoration: none;
  text-transform: uppercase;
  transition: color 0.2s ease;
}

.news-post-item h3 a:hover {
  color: var(--burgundy-accent);
  text-decoration: underline;
}

.news-post-date {
  font-size: 0.8rem;
  color: var(--lilac-text);
  font-weight: 600;
  display: block;
  margin-bottom: 4px;
}

.news-post-excerpt {
  font-size: 0.88rem;
  color: var(--lilac-text);
}

.news-social-column {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
}

.social-circle-btn {
  width: 32px;
  height: 32px;
  background-color: #ffffff;
  color: var(--primary-navy);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-size: 0.8rem;
  font-weight: bold;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.social-circle-btn:hover {
  background-color: var(--burgundy-accent);
  color: #ffffff;
}

/* ==========================================================================
   4. PARTNER LOGOS ROW
   ========================================================================== */
.partner-logos-row {
  display: flex;
  justify-content: space-around;
  align-items: center;
  gap: 20px;
  margin-bottom: 30px;
  flex-wrap: wrap;
}

.partner-card {
  background: var(--card-bg);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: 12px 20px;
  text-align: center;
  font-weight: bold;
  font-size: 0.85rem;
  color: var(--burgundy-accent);
  min-width: 200px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.03);
}

/* ==========================================================================
   5. FOOTER
   ========================================================================== */
.site-black-footer {
  background-color: var(--dark-box-bg);
  border-radius: 8px;
  padding: 18px 25px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #ffffff;
  flex-wrap: wrap;
  gap: 15px;
  box-shadow: 0 4px 12px rgba(28, 43, 54, 0.15);
}

.footer-social-links {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Force footer social buttons to match header active style on hover */
.footer-social-links .social-circle-btn:hover,
.footer-social-links a:hover {
  background-color: var(--burgundy-accent) !important;
  color: #ffffff !important;
  border-color: var(--burgundy-accent) !important;
}

.footer-brand-logos {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 0.5px;
}

.footer-brand-logos .divider {
  color: rgba(255, 255, 255, 0.3);
}

.footer-brand-logos .pie-link,
.footer-brand-logos .pie-link:link,
.footer-brand-logos .pie-link:visited,
.footer-brand-logos .jalt-link,
.footer-brand-logos .jalt-link:link,
.footer-brand-logos .jalt-link:visited {
  color: var(--lilac-text);
  text-decoration: none;
  transition: color 0.2s ease;
}

/* Matching footer text links to header hover style */
.footer-brand-logos .pie-link:hover,
.footer-brand-logos .pie-link:active,
.footer-brand-logos .jalt-link:hover,
.footer-brand-logos .jalt-link:active,
.site-black-footer a:not(.social-circle-btn):hover {
  color: var(--burgundy-accent) !important;
  text-decoration: underline;
}

/* ==========================================================================
   6. PUBLICATIONS PAGE STYLES
   ========================================================================== */
.publications-container {
  max-width: 900px;
  margin: 0 auto;
}

.publications-intro {
  margin-bottom: 25px;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-dark);
}

.pub-nav {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 30px;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 12px;
}

.pub-nav a {
  background: var(--dark-box-bg);
  color: var(--lilac-heading);
  padding: 6px 14px;
  border-radius: 15px;
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: bold;
  transition: background 0.2s ease, color 0.2s ease;
}

.pub-nav a:hover {
  background: var(--burgundy-accent);
  color: #ffffff;
}

.pub-section {
  background: var(--dark-box-bg);
  border-radius: 8px;
  padding: 24px;
  margin-bottom: 35px;
  color: #ffffff;
}

.pub-section h2 {
  color: #ffffff;
  font-size: 1.4rem;
  margin-bottom: 6px;
  font-family: "Georgia", serif;
}

.issn-badge {
  display: inline-block;
  background: rgba(255, 255, 255, 0.1);
  color: var(--accent-orange);
  font-size: 0.78rem;
  padding: 2px 8px;
  border-radius: 4px;
  margin-bottom: 12px;
  font-weight: bold;
}

.pub-description {
  color: var(--lilac-text);
  line-height: 1.6;
  font-size: 0.92rem;
}

.submission-info-box {
  background-color: var(--dark-box-bg);
  border-left: 4px solid var(--accent-orange);
  padding: 18px 22px;
  margin: 20px 0 30px 0;
  font-size: 0.90rem;
  color: var(--lilac-text);
  border-radius: 0 8px 8px 0;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.submission-info-box strong {
  color: #ffffff;
}

.submission-info-box p {
  margin-bottom: 8px;
}

.submission-info-box p:last-child {
  margin-bottom: 0;
}

.submission-info-box a {
  color: var(--accent-blue);
  font-weight: bold;
  text-decoration: underline;
}

.submission-info-box a:hover {
  color: #70A7FF;
}

.publisher-info {
  font-size: 0.80rem;
  color: var(--text-muted-dark);
  margin-top: 10px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 10px;
}

.volumes-list {
  margin-top: 20px;
}

.publication-volume {
  background-color: rgba(255, 255, 255, 0.05);
  border-radius: 6px;
  margin-bottom: 12px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  overflow: hidden;
}

.volume-header {
  padding: 14px 18px;
  font-size: 1rem;
  font-weight: bold;
  cursor: pointer;
  background-color: rgba(0, 0, 0, 0.2);
  display: flex;
  justify-content: space-between;
  align-items: center;
  list-style: none;
}

.volume-header::-webkit-details-marker {
  display: none;
}

.volume-header::after {
  content: "►";
  color: var(--lilac-text);
  font-size: 0.8rem;
  transition: transform 0.2s ease;
}

details[open] .volume-header::after {
  transform: rotate(90deg);
}

.volume-title {
  color: var(--lilac-heading);
  margin-right: 10px;
}

.volume-content {
  padding: 18px;
  background-color: rgba(0, 0, 0, 0.15);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.volume-doi-block,
.chapter-doi-block {
  font-size: 0.82rem;
  color: var(--lilac-text);
  margin-bottom: 12px;
}

.chapter-doi-block {
  margin-top: 4px;
  margin-bottom: 0;
}

.doi-link {
  color: var(--accent-blue);
  text-decoration: underline;
  word-break: break-all;
  font-weight: normal;
}

.doi-link:hover {
  color: #70A7FF;
}

.volume-download-bar {
  margin-bottom: 16px;
}

.download-pdf-btn {
  display: inline-block;
  background-color: var(--burgundy-accent);
  color: #ffffff;
  padding: 8px 16px;
  border-radius: 5px;
  text-decoration: none;
  font-weight: bold;
  font-size: 0.85rem;
  transition: background-color 0.2s ease;
}

.download-pdf-btn:hover {
  background-color: var(--accent-orange);
}

.chapters-heading {
  font-size: 0.85rem;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-top: 18px;
  margin-bottom: 12px;
  color: var(--lilac-heading);
}

.chapter-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.chapter-item {
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.chapter-item:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.chapter-header-line {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}

.chapter-title {
  font-size: 0.95rem;
  color: #ffffff;
  line-height: 1.4;
}

.chapter-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.chapter-pdf-link {
  font-size: 0.75rem;
  font-weight: bold;
  color: #56d364;
  background: rgba(86, 211, 100, 0.12);
  border: 1px solid rgba(86, 211, 100, 0.3);
  padding: 2px 7px;
  border-radius: 4px;
  text-decoration: none;
  transition: all 0.2s ease;
}

.chapter-pdf-link:hover {
  background: rgba(86, 211, 100, 0.25);
  border-color: rgba(86, 211, 100, 0.5);
  text-decoration: none;
}

.chapter-author {
  display: block;
  font-size: 0.82rem;
  color: var(--text-muted-dark);
  margin-top: 2px;
}

.collaboration-list {
  list-style: none;
  padding: 0;
  margin-top: 20px;
}

.collab-item {
  padding: 14px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.9rem;
  color: var(--lilac-text);
}

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

.collab-title {
  color: var(--lilac-heading);
  font-size: 1rem;
  margin-bottom: 4px;
}

.collab-desc {
  margin-bottom: 6px;
  line-height: 1.4;
  color: #ffffff;
}

.collab-link {
  display: inline-block;
  color: var(--accent-blue);
  font-weight: bold;
  font-size: 0.85rem;
  text-decoration: none;
}

.collab-link:hover {
  text-decoration: underline;
}

.no-volumes {
  color: var(--text-muted-dark);
  font-style: italic;
  font-size: 0.88rem;
}

/* ==========================================================================
   Global Responsive Breakpoints
   ========================================================================== */
@media (max-width: 768px) {
  .mobile-nav-toggle {
    display: block;
  }

  .main-nav {
    display: none;
    flex-direction: column;
    width: 100%;
    align-items: flex-start;
    gap: 12px;
    padding-top: 15px;
    margin-top: 10px;
    border-top: 1px solid var(--border-subtle);
  }

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

  .main-nav a {
    width: 100%;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-subtle);
  }

  .main-nav a:hover,
  .main-nav a.active {
    border-bottom-color: var(--burgundy-accent);
  }

  .hero-black-box,
  .podcast-grid,
  .news-box-grid {
    grid-template-columns: 1fr;
  }

  .hero-brand-graphic {
    text-align: left;
    border-left: none;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    padding-left: 0;
    padding-top: 15px;
  }
}

@media (max-width: 600px) {
  .chapter-header-line {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .chapter-actions {
    margin-top: 4px;
  }
}