/* =========================================================
   FULL THEME (Readable + Premium Headers + Thai Font Fallback)
   + Fix Sidebar Right (Background #CBD5E1)
   + Remove stray icon/marker at top-left (sidebar blocks)
   ========================================================= */

@import url("https://fonts.googleapis.com/css2?family=Sarabun:wght@300;400;500;600;700&display=swap");

:root{
  /* Colors */
  --c-bg: #2C7A7B;
  --c-nav: #161D26;

  --c-text: #F8FAFC;
  --c-muted: #94A3B8;

  --c-ink: #0F172A;     /* dark text for light cards */
  --c-ink-2: #334155;
  --c-line: rgba(148,163,184,.55);

  --c-link-on-dark: #E2E8F0;
  --c-link-on-light: #1F3A5F;

  /* Premium accent */
  --accent: #B08968;
  --accent-soft: rgba(176,137,104,.25);

  /* Typography */
  --ff-th: "Sarabun","TH Sarabun New","SarabunPSK","Leelawadee UI","Tahoma","Noto Sans Thai","Prompt",
           system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;

  --fs-base: 16px;
  --lh-base: 1.65;

  /* Radius & shadow */
  --r-sm: 8px;
  --r-md: 12px;

  --shadow-soft: 0 10px 24px rgba(15,23,42,.12);
  --shadow-lite: 0 6px 18px rgba(15,23,42,.10);
}

/* Base */
html{
  font-size: 100%;
  -webkit-text-size-adjust: 100%;
  text-rendering: optimizeLegibility;
}

body,
#Options blockquote{
  font-family: var(--ff-th);
  font-size: var(--fs-base);
  line-height: var(--lh-base);
  color: var(--c-text);
  background-color: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

#nav-menu{ padding-top: 0; }

/* =========================================================
   NAVBAR (keep menu width/padding same)
   ========================================================= */
.navbar-default{
  background-color: var(--c-nav);
  color: var(--c-text);
  border: 0;
  border-radius: var(--r-sm);
  padding: 1px;
  margin: 0 0 20px;
  height: 322.1px; /* keep original */
  box-shadow: none;
  text-shadow: none;
}

@media (max-width: 767px){
  .navbar-default{ height: auto; }
}

/* IMPORTANT: keep padding exactly same */
.navbar-default #main-navigation > li a{
  padding: 81.5px 10px 10px 10px; /* keep original */
}

.navbar-default li a,
.navbar-default .navbar-nav > .open > a,
.navbar-default #navigationUser > li a{
  color: #FAFAFA !important;
  background: transparent;
  font-family: var(--ff-th) !important;
  font-size: 17px !important;
  line-height: 1.15 !important;
  font-weight: 500;
  letter-spacing: .2px;
  text-shadow: 0 1px 0 rgba(0,0,0,.18);
  transform: translateY(-0.5px);
}

.navbar-default li a:hover,
.navbar-default li a:focus,
.navbar-default .navbar-nav > .open > a:hover,
.navbar-default .navbar-nav > .open > a:focus,
.navbar-default #navigationUser > li a:hover,
.navbar-default #navigationUser > li a:focus{
  color: #E2E8F0 !important;
  text-shadow: 0 1px 0 rgba(0,0,0,.25);
}

/* Dropdown */
.dropdown-menu{
  background-color: var(--c-nav);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--r-sm);
  box-shadow: 0 10px 26px rgba(0,0,0,.28);
}

.dropdown-menu li > a{
  color: #FAFAFA !important;
  background: transparent;
  font-family: var(--ff-th) !important;
  font-size: 16.5px !important;
  line-height: 1.25 !important;
  font-weight: 500;
  letter-spacing: .2px;
  padding: 8.5px 20px !important; /* keep original */
  text-shadow: 0 1px 0 rgba(0,0,0,.18);
  transform: translateY(-0.4px);
}

.dropdown-menu li > a:hover,
.dropdown-menu li > a:focus{
  background: linear-gradient(90deg, rgba(176,137,104,.28), rgba(148,163,184,.10)) !important;
  color: #FFFFFF !important;
}

/* =========================================================
   FORMS / BUTTONS
   ========================================================= */
.form-control{
  color: var(--c-ink);
  background-color: #FFFFFF;
  border: 1px solid #CBD5E1;
  border-radius: var(--r-sm);
  font-family: var(--ff-th) !important;
  font-size: 14.5px !important;
  line-height: 1.45 !important;
  padding: 8px 12px;
  box-shadow: none;
}

.form-control:focus{
  border-color: rgba(176,137,104,.75);
  box-shadow: 0 0 0 3px rgba(176,137,104,.18);
  outline: none;
}

.pull-md-right form button{
  color: var(--c-ink);
  background-color: #FFFFFF;
  border: 1px solid #CBD5E1;
  border-radius: var(--r-sm);
  font-family: var(--ff-th) !important;
  font-size: 14px !important;
  line-height: 1.3 !important;
  padding: 8px 12px;
}

.pull-md-right form button:hover,
.pull-md-right form button:focus,
.pull-md-right form button:hover:focus{
  background-color: #F1F5F9;
}

.btn-group .btn-primary,
.current_issue .btn-primary,
.download .btn-primary{
  background: linear-gradient(180deg, #64748B, #566579);
  border: 1px solid rgba(255,255,255,.14);
  border-radius: var(--r-sm);
  color: #FFF;
  font-family: var(--ff-th) !important;
  font-size: 14.5px !important;
  line-height: 1.25 !important;
  padding: 8px 12px;
  text-shadow: 0 1px 0 rgba(0,0,0,.22);
  box-shadow: 0 6px 16px rgba(15,23,42,.18);
}

.btn-group .btn-primary:hover,
.current_issue .btn-primary:hover,
.download .btn-primary:hover,
.btn-group .btn-primary:focus,
.current_issue .btn-primary:focus,
.download .btn-primary:focus{
  background: linear-gradient(180deg, #6B7C95, #5D6E86);
  color: #F1F5F9;
}

/* =========================================================
   CONTENT TEXT / HEADINGS (dark background areas)
   ========================================================= */
.media-body p,
.media-body .authors,
.media-body .lead,
.media-body .lea,
.page_about p,
.journal-description > p{
  color: #FAFAFA;
  font-family: var(--ff-th) !important;
  font-size: 14.5px !important;
  line-height: 1.75 !important;
  text-shadow: none;
}

.page-header h1,
.page-header h2,
.media .page-header h2,
h2, h3{
  color: #FAFAFA;
  font-family: var(--ff-th) !important;
  text-shadow: none;
  letter-spacing: .2px;
  transform: translateY(-0.6px);
}

.page-header h1{ font-size: 30px !important; line-height: 1.2 !important; font-weight: 700; }
.page-header h2,
h2{ font-size: 28px !important; line-height: 1.25 !important; font-weight: 700; }
h3{ font-size: 22px !important; line-height: 1.3 !important; font-weight: 600; }

.page-header{
  background-color: transparent;
  border: 0;
  padding: 0 0 10px 0;
  margin: 40px 0 20px 0;
}

/* Links on dark areas */
.media-heading a,
.issue a,
.page_about a{
  color: var(--c-link-on-dark);
  font-family: var(--ff-th) !important;
  font-size: 14.5px !important;
  text-shadow: none;
  text-decoration: none;
  border-bottom: 1px solid rgba(226,232,240,.35);
}

.media-heading a:hover,
.issue a:hover,
.page_about a:hover{
  color: #FFFFFF;
  border-bottom-color: rgba(176,137,104,.75);
}

/* =========================================================
   THUMBNAILS / IMAGES
   ========================================================= */
.heading .thumbnail,
.cover-image,
.media-left{
  background-color: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: var(--r-sm);
  padding: 4px;
}

.homepage-image > img{
  border: 0;
  border-radius: 0;
  padding: 0;
}

/* =========================================================
   SIDEBAR (RIGHT SIDE) — #CBD5E1
   ========================================================= */

/* Card */
aside .pkp_block{
  background: #CBD5E1 !important;
  border: 1px solid rgba(15,23,42,.18) !important;
  border-radius: var(--r-md);
  margin: 0 0 12px 0;
  padding: 0 15px;
  box-shadow: var(--shadow-lite);

  overflow: hidden;
  position: relative;
}

/* Remove stray icon/marker */
aside .pkp_block::before,
aside .pkp_block::after,
aside .pkp_block .content::before,
aside .pkp_block .content::after{
  content: none !important;
  display: none !important;
  background: none !important;
}

/* Force sidebar text readable */
aside .pkp_block,
aside .pkp_block *{
  color: #0F172A !important;
  text-shadow: none !important;
}

/* Content spacing */
.pkp_block .content{ padding: 0; }
.pkp_block .content > .content,
.block_information .content{
  padding: 0 0 12px 0;
  border-radius: 0 0 calc(var(--r-md) - 2px) calc(var(--r-md) - 2px);
}

/* Header strip */
.pkp_block .title{
  color: #FFFFFF !important;
  font-family: var(--ff-th) !important;
  font-size: 18px !important;
  line-height: 1.2 !important;
  font-weight: 800;

  background: linear-gradient(135deg, #334155, #1F2937) !important;
  border-bottom: 1px solid rgba(15,23,42,.22) !important;

  position: relative;
  border-top-left-radius: var(--r-md);
  border-top-right-radius: var(--r-md);
  margin: 0 -15px 12px -15px;
  padding: 12px 14px 12px 18px;

  box-shadow: 0 10px 18px rgba(15,23,42,.10);
  transform: translateY(-0.5px);
}

/* Accent bar */
.pkp_block .title::before{
  content: "";
  position: absolute;
  left: 10px;
  top: 10px;
  bottom: 10px;
  width: 4px;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--accent), var(--accent-soft));
  box-shadow: 0 2px 10px rgba(176,137,104,.25);
}

/* Sidebar links */
aside .pkp_block a{
  color: #0B1B2B !important;
  text-decoration: none;
  border-bottom: 1px solid rgba(11,27,43,.22);
}

aside .pkp_block a:hover,
aside .pkp_block a:focus{
  color: #020617 !important;
  border-bottom-color: rgba(176,137,104,.75);
}

/* Lists */
.pkp_block ul{ margin: 0; padding: 0; }
.pkp_block ul li{
  background-color: transparent;
  border-top: 1px solid rgba(15,23,42,.16) !important;
  padding: 10px 6px;
}

.pkp_block ul li:last-child{
  border-bottom: 1px solid rgba(15,23,42,.16) !important;
}

/* Metadata */
aside .pkp_block .label,
aside .pkp_block small,
aside .pkp_block .help-block{
  color: rgba(15,23,42,.80) !important;
  opacity: 1 !important;
}

/* =========================================================
   PANELS / BREADCRUMB (light surfaces)
   ========================================================= */
.panel{
  background-color: rgba(255,255,255,.94);
  border: 1px solid rgba(226,232,240,.95);
  border-radius: var(--r-md);
  margin: 0 0 12px 0;
  box-shadow: var(--shadow-lite);
}

.panel,
.panel *{
  color: var(--c-ink) !important;
  text-shadow: none !important;
}

.panel-default > .panel-heading{
  color: var(--c-ink) !important;
  font-family: var(--ff-th) !important;
  font-size: 18px !important;
  line-height: 1.2 !important;
  font-weight: 800;

  background: linear-gradient(135deg, rgba(255,255,255,.96), rgba(226,232,240,.92));
  border-bottom: 1px solid var(--c-line);
  border-top-left-radius: var(--r-md);
  border-top-right-radius: var(--r-md);
  box-shadow: 0 10px 18px rgba(15,23,42,.08);
  position: relative;
  padding: 12px 14px 12px 18px;
}

.panel-default > .panel-heading::before{
  content: "";
  position: absolute;
  left: 10px;
  top: 10px;
  bottom: 10px;
  width: 4px;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--accent), var(--accent-soft));
  box-shadow: 0 2px 10px rgba(176,137,104,.25);
}

.breadcrumb{
  background-color: rgba(255,255,255,.92);
  border: 1px solid rgba(226,232,240,.95);
  border-radius: var(--r-md);
  margin: 0 0 20px 0;
  padding: 10px 15px;
  box-shadow: var(--shadow-lite);
}

.breadcrumb,
.breadcrumb *{
  color: var(--c-ink) !important;
  text-shadow: none !important;
}

.breadcrumb .active{
  color: #334E68 !important;
  font-family: var(--ff-th) !important;
  font-size: 16.5px !important;
  line-height: 1.2 !important;
  font-weight: 700;
}

/* =========================================================
   DATES
   ========================================================= */
.date,
.media-body .date{
  color: var(--c-muted);
  font-family: var(--ff-th) !important;
  font-size: 12.5px !important;
  line-height: 1.2 !important;
  text-shadow: none;
}

/* =========================================================
   LOGO / SEARCH (keep layout)
   ========================================================= */
@media (min-width: 768px){
  .navbar-brand-logo{ height: 100%; }
}

.navbar-brand-logo img{
  max-height: 100%;
  height: 150px; /* keep original */
  width: auto;
}

.navbar-form{ margin-top: 58px; }

/* =========================================================
   FOOTER (light surface -> dark text)
   ========================================================= */
footer[role="contentinfo"]{
  background-color: rgba(255,255,255,.92);
  border: 1px solid rgba(226,232,240,.95);
  border-radius: var(--r-md);
  margin: 60px 0 0 0;
  padding: 22px 25px;
  color: var(--c-ink) !important;
  font-family: var(--ff-th) !important;
  font-size: 14.5px !important;
  line-height: 1.65 !important;
  box-shadow: var(--shadow-soft);
}

footer[role="contentinfo"] *{
  color: var(--c-ink) !important;
  text-shadow: none !important;
}