/* ============================================================
   FRINGE GLOBAL SCIENTIFIC PRESS — WORLD-CLASS UI
   Aesthetic: Refined Editorial · Deep Academic · Premium Open Access
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,600;0,700;1,400&family=DM+Sans:wght@300;400;500;600;700&family=DM+Serif+Display:ital@0;1&display=swap');

/* ============================================================
   DESIGN TOKENS
   ============================================================ */
:root {
  /* Core palette */
  --midnight:       #06102B;
  --navy:           #0D1F4E;
  --navy-mid:       #162960;
  --navy-light:     #1E3A8A;
  --teal:           #0EA5A0;
  --teal-dark:      #0B8A86;
  --teal-light:     #D4EEEC;
  --gold:           #B8820F;
  --gold-light:     #F0E4C4;

  /* UI colours — clean embedded palette */
  --text:           #111827;
  --text-mid:       #374151;
  --text-light:     #6B7280;
  --border:         #D4DCE8;
  --border-mid:     #B8C4D4;
  --bg:             #EEF2F8;   /* very subtle blue-white canvas, barely noticeable */
  --bg-warm:        #F3F6FB;
  --surface:        #FFFFFF;   /* pure white for main panels */
  --surface-raised: #F8FAFD;   /* slightly off-white for nested cards/inputs */
  --white:          #FFFFFF;
  --success:        #059669;
  --error:          #DC2626;

  /* Typography */
  --font-display:   'DM Serif Display', 'Playfair Display', Georgia, serif;
  --font-heading:   'Playfair Display', Georgia, serif;
  --font-ui:        'DM Sans', -apple-system, sans-serif;
  --font-body:      'DM Sans', Georgia, serif;

  /* Layout */
  --sidebar-w:      280px;
  --max-w:          1240px;
  --radius-sm:      6px;
  --radius:         10px;
  --radius-lg:      16px;

  /* Shadows — much more subtle, rely on color contrast instead */
  --shadow-xs:      0 1px 2px rgba(6,16,43,0.06);
  --shadow-sm:      0 2px 8px rgba(6,16,43,0.08);
  --shadow:         0 4px 16px rgba(6,16,43,0.10);
  --shadow-lg:      0 8px 32px rgba(6,16,43,0.14);

  /* Gradients */
  --grad-header:    linear-gradient(135deg, #06102B 0%, #0D1F4E 50%, #162960 100%);
  --grad-teal:      linear-gradient(135deg, #0EA5A0 0%, #0B8A86 100%);
  --grad-gold:      linear-gradient(135deg, #B8820F 0%, #9A6C0A 100%);
  --grad-card:      linear-gradient(180deg, #FFFFFF 0%, #F5F8FD 100%);
}

/* ============================================================
   RESET / BASE
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; transition: color 0.18s; }
a:hover { color: var(--teal); }

ul { list-style: none; }

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

h1, h2, h3, h4, h5 {
  font-family: var(--font-heading);
  line-height: 1.25;
  color: var(--navy);
}

/* ============================================================
   SITE HEADER — white bar, logo + name left, nav right
   ============================================================ */
.site-header {
  background: #FFFFFF;
  color: var(--navy);
  position: sticky;
  top: 0;
  z-index: 1000;
  border-top: 3px solid var(--teal);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 8px rgba(6,16,43,0.08);
}

.header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  gap: 0;
  height: 70px;
}

/* ── Logo + site name ── */
.site-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
  text-decoration: none;
  margin-right: 2rem;
}

.site-logo img {
  height: 48px;
  width: auto;
  object-fit: contain;
  display: block;
}

.site-name {
  font-family: var(--font-ui);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--teal-dark);
  white-space: nowrap;
  letter-spacing: -0.01em;
  line-height: 1.2;
}

/* ── Main nav ── */
.main-nav { margin-left: auto; }

.main-nav > ul {
  display: flex;
  gap: 0;
  align-items: center;
}

.main-nav > ul > li { position: relative; }

.main-nav > ul > li > a {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.5rem 0.75rem;
  color: var(--text-mid);
  font-family: var(--font-ui);
  font-size: 0.875rem;
  font-weight: 500;
  white-space: nowrap;
  border-radius: var(--radius-sm);
  transition: color 0.15s, background 0.15s;
}

.main-nav > ul > li > a:hover {
  color: var(--navy);
  background: var(--bg);
}

/* Active nav item — matches reference: bold teal text + bottom bar */
.main-nav > ul > li.active-page > a,
.main-nav > ul > li > a.active {
  color: var(--teal-dark) !important;
  font-weight: 700 !important;
  background: none;
  position: relative;
}
.main-nav > ul > li.active-page > a::after,
.main-nav > ul > li > a.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0.5rem;
  right: 0.5rem;
  height: 2px;
  background: var(--teal);
  border-radius: 2px;
}

/* Dropdown */
.dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 210px;
  background: var(--white);
  border-radius: var(--radius);
  border-top: 3px solid var(--teal);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  z-index: 200;
  animation: dropIn 0.18s ease;
}

@keyframes dropIn {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.has-dropdown:hover .dropdown,
.has-dropdown:focus-within .dropdown { display: block; }

.dropdown li a {
  display: block;
  padding: 0.65rem 1.1rem;
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 0.845rem;
  font-weight: 400;
  border-bottom: 1px solid var(--border);
  transition: background 0.12s, color 0.12s, padding-left 0.12s;
}

.dropdown li:last-child a { border-bottom: none; }
.dropdown li a:hover {
  background: var(--teal-light);
  color: var(--teal-dark);
  padding-left: 1.4rem;
}

.arrow {
  font-size: 0.65em;
  opacity: 0.7;
  transition: transform 0.18s;
}
.has-dropdown:hover .arrow { transform: rotate(180deg); }

/* ── Header actions ── */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.btn-search, .btn-register, .btn-login {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.9rem;
  border-radius: 30px;
  font-family: var(--font-ui);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.18s;
}

.btn-search {
  color: var(--text-mid);
  border: 1px solid var(--border);
}
.btn-search:hover {
  background: var(--bg);
  color: var(--navy);
  border-color: var(--border-mid);
}

.btn-register {
  background: var(--grad-teal);
  color: var(--white);
  border: 1px solid transparent;
  box-shadow: 0 2px 8px rgba(14,165,160,0.35);
}
.btn-register:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(14,165,160,0.45);
  color: var(--white);
}

.btn-login {
  background: var(--white);
  color: var(--navy);
  border: 1px solid var(--border);
}
.btn-login:hover {
  background: var(--bg);
  color: var(--teal-dark);
}

.header-username {
  color: var(--text-mid);
  font-family: var(--font-ui);
  font-size: 0.82rem;
  margin-right: 0.15rem;
}

/* ── Hamburger ── */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  margin-left: auto;
  margin-right: 1rem;
  border-radius: var(--radius-sm);
  transition: background 0.15s;
}
.hamburger:hover { background: var(--bg); }
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--navy);
  border-radius: 2px;
  transition: transform 0.22s, opacity 0.22s;
}

/* ============================================================
   BREADCRUMB
   ============================================================ */
.breadcrumb-bar {
  background: rgba(255,255,255,0.55);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.breadcrumb-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0.55rem 1.5rem;
  font-family: var(--font-ui);
  font-size: 0.82rem;
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: 0.1rem;
}

.breadcrumb-inner a {
  color: var(--teal-dark);
  font-weight: 500;
}
.breadcrumb-inner a:hover { color: var(--teal); text-decoration: underline; }
.breadcrumb-inner .sep { margin: 0 0.45rem; color: var(--border-mid); }

/* ============================================================
   PAGE LAYOUT
   ============================================================ */
.page-container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 2rem 1.5rem;
  display: grid;
  grid-template-columns: 1fr var(--sidebar-w);
  gap: 2rem;
  align-items: start;
}

.page-container.no-sidebar { grid-template-columns: 1fr; }

/* ── Main content panel ── */
.main-content {
  background: var(--surface);
  padding: 2rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  min-height: 400px;
  border: 1px solid var(--border);
}

.main-content h2 {
  font-size: 1.55rem;
  color: var(--navy);
  margin-bottom: 1.25rem;
  padding-bottom: 0.85rem;
  border-bottom: 2px solid var(--teal);
  position: relative;
}

.main-content h2::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 60px;
  height: 2px;
  background: var(--gold);
}

/* ============================================================
   SIDEBAR
   ============================================================ */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
  position: sticky;
  top: 88px;
}

.sidebar-widget {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  box-shadow: var(--shadow-xs);
  overflow: hidden;
  transition: box-shadow 0.2s, border-color 0.2s;
}
.sidebar-widget:hover {
  box-shadow: var(--shadow-sm);
  border-color: var(--border-mid);
}

.widget-title {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--navy);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding-bottom: 0.6rem;
  margin-bottom: 0.75rem;
  border-bottom: 2px solid var(--teal);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* Widget 1 — Submission CTA */
.widget-submission { background: var(--grad-header); border-color: transparent; }
.btn-submission {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1rem;
  background: var(--grad-teal);
  color: var(--white);
  border-radius: var(--radius);
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 0.92rem;
  text-align: center;
  transition: all 0.2s;
  box-shadow: 0 4px 14px rgba(14,165,160,0.4);
  letter-spacing: 0.02em;
}
.btn-submission:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(14,165,160,0.5);
  color: var(--white);
}
.submission-icon { font-size: 1.1rem; }

/* Sidebar menu */
.sidebar-menu li { border-bottom: 1px solid var(--border); }
.sidebar-menu li:last-child { border-bottom: none; }
.sidebar-menu a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0.25rem;
  font-family: var(--font-ui);
  font-size: 0.84rem;
  color: var(--text-mid);
  transition: color 0.15s, padding-left 0.15s;
}
.sidebar-menu a::after {
  content: '›';
  color: var(--border-mid);
  font-size: 1.1rem;
  transition: color 0.15s, transform 0.15s;
}
.sidebar-menu a:hover {
  color: var(--teal-dark);
  padding-left: 0.35rem;
}
.sidebar-menu a:hover::after {
  color: var(--teal);
  transform: translateX(3px);
}

/* Indexing badges */
.indexing-logos {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.index-badge {
  padding: 0.22rem 0.6rem;
  background: linear-gradient(135deg, #EEF4FF 0%, #E8F0FE 100%);
  border: 1px solid #C7D6F8;
  border-radius: 20px;
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--navy-light);
  letter-spacing: 0.02em;
  transition: all 0.15s;
}
.index-badge:hover {
  background: var(--teal-light);
  border-color: var(--teal);
  color: var(--teal-dark);
}

/* Google Scholar */
.scholar-link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-family: var(--font-ui);
  font-size: 0.84rem;
  color: var(--teal-dark);
  font-weight: 500;
  text-decoration: underline;
  text-underline-offset: 2px;
}
.scholar-link:hover { color: var(--teal); }

/* Book type tags */
.book-type-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 0.75rem;
}
.book-tag {
  padding: 0.22rem 0.55rem;
  background: var(--navy);
  color: rgba(255,255,255,0.9);
  border-radius: 20px;
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: all 0.15s;
}
.book-tag:hover {
  background: var(--teal);
  color: var(--white);
  transform: translateY(-1px);
}

/* Booklist */
.sidebar-booklist li { border-bottom: 1px solid var(--border); }
.sidebar-booklist a {
  display: block;
  padding: 0.42rem 0;
  font-size: 0.81rem;
  color: var(--text-mid);
  line-height: 1.4;
  transition: color 0.15s;
}
.sidebar-booklist a:hover { color: var(--teal-dark); }

/* Editorial preview */
.editorial-preview {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 0.85rem;
}
.editorial-preview li {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}
.editor-avatar {
  width: 36px;
  height: 36px;
  min-width: 36px;
  border-radius: 50%;
  background: var(--grad-header);
  color: var(--white);
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--teal);
}
.editorial-preview strong {
  display: block;
  font-size: 0.81rem;
  font-family: var(--font-ui);
  font-weight: 600;
  color: var(--text);
}
.editorial-preview span {
  font-size: 0.74rem;
  color: var(--text-light);
  font-family: var(--font-ui);
}
.btn-readmore {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-family: var(--font-ui);
  font-size: 0.82rem;
  color: var(--teal-dark);
  font-weight: 600;
  transition: gap 0.15s;
}
.btn-readmore:hover { color: var(--teal); gap: 0.45rem; }

/* Publish link */
.publish-link {
  font-family: var(--font-ui);
  font-size: 0.84rem;
  color: var(--teal-dark);
  text-decoration: underline;
  text-underline-offset: 2px;
  font-weight: 500;
}
.publish-link:hover { color: var(--teal); }

/* WhatsApp widget */
.widget-whatsapp {
  background: linear-gradient(135deg, #075E54 0%, #128C7E 100%);
  border-color: transparent;
}
.whatsapp-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--white);
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 0.88rem;
  letter-spacing: 0.02em;
}
.whatsapp-link:hover { color: #A7F3D0; }
.wa-icon { font-size: 1.6rem; }

/* Information widget */
.sidebar-menu a { }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--midnight);
  color: var(--white);
  margin-top: 3rem;
  position: relative;
  overflow: hidden;
}

/* Decorative top accent */
.site-footer::before {
  content: '';
  display: block;
  height: 3px;
  background: linear-gradient(90deg, var(--teal) 0%, var(--gold) 50%, var(--teal) 100%);
}

/* Subtle background pattern */
.site-footer::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 20% 50%, rgba(14,165,160,0.06) 0%, transparent 50%),
                    radial-gradient(circle at 80% 20%, rgba(201,147,42,0.05) 0%, transparent 40%);
  pointer-events: none;
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 3rem 1.5rem 2rem;
  display: grid;
  grid-template-columns: 220px 1fr 1fr;
  gap: 3rem;
  align-items: start;
  position: relative;
  z-index: 1;
}

.footer-logo-col img {
  height: 48px;
  width: auto;
  opacity: 0.9;
  margin-bottom: 1rem;
}

.footer-logo-col p {
  font-family: var(--font-ui);
  font-size: 0.82rem;
  color: rgba(255,255,255,0.45);
  line-height: 1.6;
}

.footer-heading {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--teal);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
}

.footer-address {
  font-family: var(--font-ui);
  font-size: 0.84rem;
  line-height: 1.9;
  color: rgba(255,255,255,0.65);
  font-style: normal;
}
.footer-address strong {
  color: rgba(255,255,255,0.92);
  font-weight: 600;
  display: block;
  margin-bottom: 0.25rem;
  font-size: 0.9rem;
}
.footer-address a {
  color: var(--teal);
  transition: color 0.15s;
}
.footer-address a:hover { color: #7EDDD9; }
.footer-wa {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 0.25rem;
  color: #25D366 !important;
}

.footer-links { margin-bottom: 1.25rem; }
.footer-links li { margin-bottom: 0.5rem; }
.footer-links a {
  font-family: var(--font-ui);
  font-size: 0.84rem;
  color: rgba(255,255,255,0.6);
  transition: color 0.15s, padding-left 0.15s;
  display: inline-block;
}
.footer-links a:hover {
  color: var(--teal);
  padding-left: 0.3rem;
}

/* Social links */
.footer-social {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}
.footer-social a {
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.75rem;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 20px;
  font-family: var(--font-ui);
  font-size: 0.78rem;
  font-weight: 500;
  color: rgba(255,255,255,0.65);
  transition: all 0.18s;
}
.footer-social a:hover {
  background: rgba(14,165,160,0.15);
  border-color: var(--teal);
  color: var(--teal);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  text-align: center;
  padding: 1.25rem 1.5rem;
  font-family: var(--font-ui);
  font-size: 0.79rem;
  color: rgba(255,255,255,0.35);
  position: relative;
  z-index: 1;
}

/* ============================================================
   HOME PAGE
   ============================================================ */
.home-about {
  margin-bottom: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}

.home-about h1 {
  font-size: 1.75rem;
  color: var(--navy);
  margin-bottom: 0.35rem;
  letter-spacing: -0.01em;
}

.home-about h1 a { color: var(--navy); }
.home-about h1 a:hover { color: var(--teal); }

.home-tagline {
  font-family: var(--font-ui);
  font-weight: 500;
  font-size: 1rem;
  color: var(--text-mid);
  margin: 0.75rem 0 1.5rem;
  padding: 0.75rem 1rem;
  background: linear-gradient(135deg, var(--teal-light) 0%, #EEF4FF 100%);
  border-left: 3px solid var(--teal);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.services-label {
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--navy);
  margin: 1.5rem 0 0.75rem;
}

.services-list {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem 1.5rem;
}

.services-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-family: var(--font-ui);
  font-size: 0.87rem;
  color: var(--text-mid);
  padding: 0.3rem 0;
  border-bottom: 1px solid var(--border);
}

.services-list li::before {
  content: '✓';
  color: var(--teal);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 0.05em;
}

.contact-para {
  margin-top: 1.5rem;
  padding: 1rem 1.25rem;
  background: var(--surface-raised);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  font-family: var(--font-ui);
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--text-mid);
}
.contact-para a { color: var(--teal-dark); font-weight: 600; }
.contact-para a:hover { color: var(--teal); }

/* Section headings */
.section-heading {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--navy);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.5rem 0.85rem;
  background: linear-gradient(135deg, #EEF4FF 0%, #F7F9FC 100%);
  border-left: 3px solid var(--gold);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 2rem 0 1.25rem;
}

/* ── Featured Carousel ── */
.carousel-wrap {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--white);
  box-shadow: var(--shadow-xs);
}

.carousel-track {
  display: flex;
  transition: transform 0.4s cubic-bezier(0.25, 0.1, 0.25, 1);
}

.carousel-slide {
  min-width: 50%;
  flex-shrink: 0;
  padding: 1.25rem;
}

.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: var(--navy);
  color: var(--white);
  border: none;
  cursor: pointer;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.18s, transform 0.18s;
  z-index: 5;
  box-shadow: var(--shadow-sm);
}
.carousel-btn:hover { background: var(--teal); transform: translateY(-50%) scale(1.08); }
.carousel-prev { left: 0.75rem; }
.carousel-next { right: 0.75rem; }

.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem;
  background: var(--bg);
  border-top: 1px solid var(--border);
}
.dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--border-mid);
  cursor: pointer;
  border: none;
  transition: all 0.18s;
}
.dot.active {
  background: var(--teal);
  transform: scale(1.25);
}

/* ── Book Cards ── */
.book-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.book-card {
  display: flex;
  gap: 0.9rem;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-raised);
  transition: all 0.22s;
  cursor: pointer;
}
.book-card:hover {
  background: var(--surface);
  box-shadow: var(--shadow);
  border-color: var(--teal);
  transform: translateY(-2px);
}

.book-cover {
  width: 58px;
  min-width: 58px;
  height: 78px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-xs);
}
.book-cover-placeholder {
  width: 58px;
  min-width: 58px;
  height: 78px;
  background: var(--grad-header);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.6);
  font-size: 1.4rem;
  flex-shrink: 0;
  box-shadow: var(--shadow-xs);
}

.book-meta { flex: 1; min-width: 0; }
.book-meta h3 {
  font-family: var(--font-ui);
  font-size: 0.86rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.book-meta h3 a { color: var(--text); }
.book-meta h3 a:hover { color: var(--teal-dark); }
.book-author {
  font-family: var(--font-ui);
  font-size: 0.8rem;
  color: var(--text-light);
  margin-bottom: 0.3rem;
  font-style: italic;
}
.book-date {
  font-family: var(--font-ui);
  font-size: 0.76rem;
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

/* ============================================================
   CATALOG
   ============================================================ */
.catalog-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}
.catalog-count {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  color: var(--text-light);
}

.catalog-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

/* Pagination */
.pagination {
  display: flex;
  justify-content: center;
  gap: 0.35rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}
.pagination a, .pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 0.65rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--font-ui);
  font-size: 0.84rem;
  color: var(--text-mid);
  transition: all 0.15s;
}
.pagination a:hover {
  background: var(--teal);
  color: var(--white);
  border-color: var(--teal);
}
.pagination .current {
  background: var(--navy);
  color: var(--white);
  border-color: var(--navy);
  font-weight: 700;
}
.pagination .disabled { opacity: 0.35; pointer-events: none; }

/* ============================================================
   BOOK DETAIL
   ============================================================ */
.book-detail-header { margin-bottom: 1.75rem; }

.book-detail-title {
  font-size: 1.5rem;
  color: var(--navy);
  margin-bottom: 0.65rem;
  line-height: 1.3;
}

.doi-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.28rem 0.75rem;
  background: #EBF8FF;
  border: 1px solid #BEE3F8;
  border-radius: 20px;
  font-family: var(--font-ui);
  font-size: 0.78rem;
  font-weight: 600;
  color: #2B6CB0;
  margin-bottom: 1.25rem;
}
.doi-badge a { color: #2B6CB0; text-decoration: underline; }

.book-detail-body { display: flex; gap: 2rem; }
.book-detail-cover { width: 150px; flex-shrink: 0; }
.book-detail-cover img {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}
.book-detail-info { flex: 1; }

.info-table { width: 100%; border-collapse: collapse; margin-bottom: 1.25rem; }
.info-table td {
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.875rem;
  font-family: var(--font-ui);
}
.info-table td:first-child {
  font-weight: 600;
  width: 38%;
  color: var(--text-light);
  font-size: 0.82rem;
}

.keywords-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0.85rem 0;
}
.keyword-chip {
  padding: 0.22rem 0.7rem;
  background: var(--teal-light);
  border: 1px solid rgba(14,165,160,0.25);
  border-radius: 20px;
  font-family: var(--font-ui);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--teal-dark);
}

.authors-section { margin: 1.5rem 0; }
.author-card {
  padding: 0.85rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 0.65rem;
  background: var(--surface-raised);
  transition: border-color 0.15s;
}
.author-card:hover { border-color: var(--teal); }
.author-name { font-weight: 700; font-family: var(--font-ui); font-size: 0.9rem; }
.author-affil { color: var(--text-light); font-size: 0.84rem; font-family: var(--font-ui); }
.author-orcid {
  font-family: var(--font-ui);
  font-size: 0.78rem;
  color: #A6CE39;
  font-weight: 600;
}

.download-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.5rem;
  background: var(--grad-teal);
  color: var(--white);
  border-radius: 30px;
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 0.9rem;
  box-shadow: 0 4px 14px rgba(14,165,160,0.35);
  transition: all 0.2s;
}
.download-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(14,165,160,0.45);
  color: var(--white);
}

.citation-section { margin-top: 1.75rem; }
.citation-select {
  padding: 0.45rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--font-ui);
  font-size: 0.875rem;
  margin-bottom: 0.85rem;
  background: var(--white);
  cursor: pointer;
}
.citation-select:focus { outline: none; border-color: var(--teal); }
.citation-text {
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 1rem;
  border-radius: var(--radius);
  font-size: 0.875rem;
  line-height: 1.7;
  font-family: var(--font-ui);
  color: var(--text-mid);
}

/* ============================================================
   FORMS
   ============================================================ */
.form-page { max-width: 540px; margin: 0 auto; }
.form-group { margin-bottom: 1.15rem; }
.form-group label {
  display: block;
  font-family: var(--font-ui);
  font-size: 0.84rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
  color: var(--text);
}
.form-group label .req { color: var(--error); margin-left: 2px; }

.form-control {
  width: 100%;
  padding: 0.6rem 0.9rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--font-ui);
  font-size: 0.9rem;
  color: var(--text);
  background: var(--surface-raised);
  transition: border-color 0.18s, box-shadow 0.18s;
}
.form-control:focus {
  outline: none;
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(14,165,160,0.12);
}
.form-control::placeholder { color: var(--text-light); }

.form-section-title {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--navy);
  background: linear-gradient(135deg, #EEF4FF 0%, var(--teal-light) 100%);
  padding: 0.55rem 0.85rem;
  margin: 1.75rem 0 1rem;
  border-left: 3px solid var(--teal);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.btn-primary {
  padding: 0.7rem 2.5rem;
  background: var(--grad-header);
  color: var(--white);
  border: none;
  border-radius: 30px;
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  letter-spacing: 0.03em;
  transition: all 0.2s;
  box-shadow: 0 4px 14px rgba(13,31,78,0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(13,31,78,0.45);
}

.form-link {
  font-family: var(--font-ui);
  font-size: 0.875rem;
  color: var(--text-light);
  margin-top: 0.75rem;
}
.form-link a { color: var(--teal-dark); font-weight: 600; }

.alert {
  padding: 0.8rem 1.1rem;
  border-radius: var(--radius);
  font-family: var(--font-ui);
  font-size: 0.875rem;
  margin-bottom: 1.1rem;
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}
.alert-error, .alert-danger {
  background: #FEF2F2;
  color: #991B1B;
  border: 1px solid #FECACA;
}
.alert-success {
  background: #F0FDF4;
  color: #14532D;
  border: 1px solid #BBF7D0;
}

.auth-box {
  max-width: 520px;
  margin: 0 auto;
  background: var(--surface);
  padding: 2.5rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}
.auth-box h2 { color: var(--navy); margin-bottom: 1.5rem; }

.btn.btn-block, .btn-primary.btn-block { width: 100%; text-align: center; }

/* ============================================================
   SEARCH
   ============================================================ */
.search-form {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1.75rem;
}
.search-input {
  flex: 1;
  padding: 0.65rem 1rem;
  border: 1.5px solid var(--border);
  border-radius: 30px;
  font-family: var(--font-ui);
  font-size: 0.95rem;
  background: var(--white);
  transition: border-color 0.18s, box-shadow 0.18s;
}
.search-input:focus {
  outline: none;
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(14,165,160,0.12);
}
.btn-search-submit {
  padding: 0.65rem 1.5rem;
  background: var(--grad-teal);
  color: var(--white);
  border: none;
  border-radius: 30px;
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 0 3px 10px rgba(14,165,160,0.3);
}
.btn-search-submit:hover {
  transform: translateY(-1px);
  box-shadow: 0 5px 16px rgba(14,165,160,0.4);
}
.search-count {
  font-family: var(--font-ui);
  font-size: 0.875rem;
  color: var(--text-light);
  margin-bottom: 1.1rem;
}

/* ============================================================
   CONTENT PAGES
   ============================================================ */
.content-page h2 { margin-top: 1.75rem; }
.content-page h3 {
  margin-top: 1.25rem;
  font-size: 1.05rem;
  color: var(--navy);
  font-family: var(--font-ui);
  font-weight: 700;
}
.content-page p { margin: 0.7rem 0; line-height: 1.85; }
.content-page ul {
  list-style: none;
  padding: 0;
  margin: 0.75rem 0;
}
.content-page ul li {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  padding: 0.3rem 0;
  font-size: 0.92rem;
  color: var(--text-mid);
  line-height: 1.7;
  border-bottom: 1px solid var(--border);
}
.content-page ul li::before {
  content: '›';
  color: var(--teal);
  font-weight: 700;
  font-size: 1.1em;
  flex-shrink: 0;
  margin-top: 0.05em;
}
.content-page ol {
  padding-left: 1.5rem;
  margin: 0.75rem 0;
  line-height: 1.9;
}
.content-page ol li { margin-bottom: 0.4rem; }
.content-page table { border-collapse: collapse; width: 100%; margin: 1.25rem 0; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-xs); }
.content-page th, .content-page td {
  padding: 0.65rem 1rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.88rem;
  font-family: var(--font-ui);
  text-align: left;
}
.content-page th {
  background: var(--navy);
  color: var(--white);
  font-weight: 600;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.content-page tr:nth-child(even) td { background: var(--bg); }
.content-page tr:hover td { background: var(--teal-light); }

/* Pricing */
.price-table-wrap { overflow-x: auto; border-radius: var(--radius); }
.price-highlight {
  background: linear-gradient(135deg, #FFFBF0 0%, #FEF3D0 100%);
  border: 2px solid var(--gold);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  margin: 1.25rem 0;
}
.price-original {
  text-decoration: line-through;
  color: var(--text-light);
  font-family: var(--font-ui);
  font-size: 0.9rem;
}
.price-current {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--navy);
  font-family: var(--font-heading);
}
.price-discount {
  background: var(--gold);
  color: var(--white);
  padding: 0.25rem 0.65rem;
  border-radius: 20px;
  font-family: var(--font-ui);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

/* ============================================================
   EDITORIAL TEAM PAGE
   ============================================================ */
.editorial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

.editorial-card {
  padding: 1.25rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--white);
  transition: all 0.22s;
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}
.editorial-card:hover {
  box-shadow: var(--shadow);
  border-color: var(--teal);
  transform: translateY(-2px);
}

.editorial-avatar {
  width: 52px;
  height: 52px;
  min-width: 52px;
  border-radius: 50%;
  background: var(--grad-header);
  color: var(--white);
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 3px solid var(--teal);
  box-shadow: 0 2px 8px rgba(14,165,160,0.25);
}

/* ============================================================
   UTILITY / MISC
   ============================================================ */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  clip: rect(0,0,0,0);
  overflow: hidden;
}

/* Smooth entrance for cards */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}
.book-card, .sidebar-widget, .author-card {
  animation: fadeUp 0.35s ease both;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  :root { --sidebar-w: 250px; }
}

@media (max-width: 900px) {
  .catalog-grid, .book-grid { grid-template-columns: 1fr; }
  .services-list { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .hamburger { display: flex; }

  .main-nav {
    display: none;
    position: absolute;
    top: 73px;
    left: 0;
    right: 0;
    background: var(--white);
    z-index: 999;
    border-top: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
  }
  .main-nav.open { display: block; }
  .main-nav > ul { flex-direction: column; }
  .main-nav > ul > li > a {
    color: var(--text-mid);
    padding: 0.85rem 1.25rem;
    border-bottom: 1px solid var(--border);
    border-radius: 0;
  }
  .main-nav > ul > li > a:hover { color: var(--teal-dark); background: var(--teal-light); }
  .dropdown {
    position: static;
    border: none;
    box-shadow: none;
    background: var(--bg);
    animation: none;
    border-radius: 0;
  }
  .dropdown li a {
    color: var(--text-mid);
    padding-left: 2.5rem;
    border-bottom-color: var(--border);
  }
  .dropdown li a:hover { background: var(--teal-light); padding-left: 2.75rem; }
  .has-dropdown .dropdown { display: none; }
  .has-dropdown.open .dropdown { display: block; }

  .page-container {
    grid-template-columns: 1fr;
    padding: 1.25rem 1rem;
  }

  .sidebar { position: static; }

  .footer-inner { grid-template-columns: 1fr; gap: 2rem; }

  .book-detail-body { flex-direction: column; }
  .book-detail-cover { width: 120px; }

  .header-actions .btn-register span,
  .header-actions .btn-login span { display: none; }
}

@media (max-width: 480px) {
  .carousel-slide { min-width: 100%; }
  .header-inner { padding: 0 1rem; }
  .main-content { padding: 1.25rem; }
  .auth-box { padding: 1.5rem 1.25rem; }
}