/**
 * jsm-home.css
 *
 * MERGED build for the OJS "jsm-demo" theme plugin.
 * Combines topbar.css + nav.css + hero.css + indexing.css + footer.css
 * (previously pulled in via absolute-path @import rules that will 404 once
 * this is served from inside OJS) directly into one file, in the same order
 * they were imported, followed by the rest of jsm-home.css unchanged.
 *
 * Register with $this->addStyle('jsm-home', 'styles/jsm-home.css'); from
 * your theme plugin's init() -- see the chat message for the full snippet.
 */

/* ---------- topbar.css (was: @import "/jsm-demo/css/layout/topbar.css") ---------- */
.top-bar {
  background: #fff;
  border-bottom: 1px solid var(--color-border);
}
.top-bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}
.brand-mark {
  width: 80px;
  height: 80px;
  align-items: center;
  justify-content: center;
  display: flex;
}
.brand-mark .icon {
  width: 22px;
  height: 22px;
}
.brand-text-title {
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: 19px;
  color: var(--color-primary);
  letter-spacing: 0.02em;
  line-height: 1;
}
.brand-text-line1 {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--color-text);
  text-transform: uppercase;
  margin-top: 5px;
}
.brand-text-line2 {
  font-size: 11.5px;
  color: var(--color-primary);
  margin-top: 2px;
}
.utility-nav {
  display: flex;
  align-items: center;
  gap: 20px;
}
.utility-link {
  font-size: 13.5px;
  font-weight: 500;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  transition: color 0.15s ease;
}
.utility-link:hover {
  color: var(--color-primary);
}
.utility-link .icon {
  width: 15px;
  height: 15px;
}

.divider-v {
  width: 1px;
  height: 20px;
  background: var(--color-border-strong);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-primary);
  padding: 4px;
}
.mobile-toggle .icon {
  width: 26px;
  height: 26px;
}

/* ---------- nav.css (was: @import "/jsm-demo/css/layout/nav.css") ---------- */
/* ---------- Main nav ---------- */
.main-nav {
  background: linear-gradient(
    var(--color-primary) 0%,
    var(--color-primary-dark) 100%
  );
}
.main-nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-list {
  width: 100%;
  display: flex;
  align-items: stretch;
  justify-content: space-between;
}
.nav-item {
  display: flex;
  position: relative;
}
.nav-link {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 10px;
  font-size: 13.8px;
  font-weight: 600;
  color: #fff;
  letter-spacing: 0.01em;
  border-bottom: 3px solid transparent;
  justify-content: space-evenly;
  transition:
    background 0.15s ease,
    border-color 0.15s ease;
}
.nav-link .icon {
  width: 11px;
  height: 11px;
  opacity: 0.85;
}
.nav-item:hover .nav-link,
.nav-item.open .nav-link {
  background: rgba(255, 255, 255, 0.08);
}
.nav-item.active .nav-link {
  border-bottom-color: var(--color-gold);
  color: #fff;
}

.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 240px;
  background: #fff;
  border-top: 3px solid var(--color-gold);
  box-shadow: var(--shadow-lg);
  padding: 8px;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition:
    opacity 0.18s ease,
    transform 0.18s ease;
  z-index: 80;
}
.nav-item.has-dropdown:hover .nav-dropdown,
.nav-item.open .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.nav-dropdown li a {
  display: block;
  padding: 10px 14px;
  font-size: 13.6px;
  color: var(--color-text);
  border-radius: 6px;
  transition:
    background 0.15s,
    color 0.15s,
    padding 0.15s;
}
.nav-dropdown li a:hover {
  background: var(--color-primary-tint);
  color: var(--color-primary);
  padding-left: 18px;
}

/* Chỉ áp dụng cho menu dài */
.nav-dropdown-2col {
    width: 480px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    grid-auto-flow: column;   /* Đổ đầy cột trái trước rồi sang cột phải */
    grid-template-rows: repeat(9, auto); /* 18 mục => 9 dòng mỗi cột */
}

.nav-dropdown-2col li {
    list-style: none;
}

.nav-dropdown-2col li a {
    display: block;
    padding: 10px 20px;
}

.nav-search-btn {
  background: rgba(255, 255, 255, 0.12);
  border: none;
  color: #fff;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 4px;
  transition: background 0.15s ease;
  flex-shrink: 0;
}
.nav-search-btn:hover {
  background: rgba(255, 255, 255, 0.22);
}
.nav-search-btn .icon {
  width: 16px;
  height: 16px;
}

/* ---------- hero.css (was: @import "/jsm-demo/css/layout/hero.css") ---------- */
/* =========================================================
     HERO
  ========================================================= */
.hero {
  position: relative;
  background: #fff;
  overflow: hidden;
  padding: 40px 0 40px;
}
.hero-dots {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(
    circle,
    rgba(123, 30, 44, 0.16) 1.6px,
    transparent 1.6px
  );
  background-size: 24px 24px;
  -webkit-mask-image: radial-gradient(
    ellipse 55% 90% at 78% 45%,
    #000 35%,
    transparent 75%
  );
  mask-image: radial-gradient(
    ellipse 55% 90% at 78% 45%,
    #000 35%,
    transparent 75%
  );
  pointer-events: none;
}
.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.15fr 0.75fr;
  gap: 60px;
  align-items: center;
}
.hero-title {
  font-size: 47px;
  line-height: 1.08;
  letter-spacing: -0.01em;
  margin-bottom: 10px;
}
.hero-title span {
  display: block;
}
.hero-title .line1 {
  color: var(--color-text);
  font-weight: 600;
}
.hero-title .line2 {
  color: var(--color-primary);
  font-weight: 800;
}
.hero-rule {
  width: 64px;
  height: 3px;
  background: var(--color-gold);
  margin: 22px 0;
  border: none;
}
.hero-subtitle {
  font-size: 17px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.hero-features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin: 34px 0 32px;
}
.hero-feature {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.hero-feature-icon {
  width: 40px;
  height: 40px;
  border-radius: 9px;
  /* background: var(--color-primary-tint);
        color: var(--color-primary); */
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.hero-feature-icon .icon {
  width: 17px;
  height: 17px;
}
.hero-feature-text {
  display: inline-block;
}

.hero-feature-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.3;
  display: block;
}
.hero-feature-sub {
  font-size: 11.5px;
  color: var(--color-text-muted);
  margin-top: 2px;
  display: block;
}

.hero-cta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* Book mockup */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  max-width: 60%;
  margin: 0 auto;
}
.book-mockup {
  position: relative;
  width: 290px;
  aspect-ratio: 290/380;
  border-radius: 4px 10px 10px 4px;
  background: linear-gradient(
    135deg,
    var(--color-primary) 0%,
    var(--color-primary-darker) 100%
  );
  box-shadow:
    -14px 0 0 -6px rgba(0, 0, 0, 0.08),
    var(--shadow-lg);
  color: #fff;
  padding: 26px 24px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.book-mockup::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(
    circle,
    rgba(201, 169, 97, 0.45) 1px,
    transparent 1px
  );
  background-size: 14px 14px;
  opacity: 0.55;
}
.book-mockup::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 9px;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.25), rgba(0, 0, 0, 0.05));
}
.book-issn {
  position: relative;
  font-size: 8.5px;
  line-height: 1.5;
  text-align: right;
  opacity: 0.85;
  margin-left: auto;
}
.book-title-wrap {
  position: relative;
  margin-top: 26px;
}
.book-title-wrap .line1 {
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 600;
  opacity: 0.92;
}
.book-title-wrap .line2 {
  font-family: var(--font-serif);
  font-size: 25px;
  font-weight: 800;
  line-height: 1.15;
  margin-top: 2px;
}
.book-subtitle {
  position: relative;
  font-size: 9px;
  line-height: 1.5;
  opacity: 0.82;
  margin-top: 10px;
  max-width: 190px;
}
.book-spacer {
  flex: 1;
}
.book-banner {
  position: relative;
  background: var(--color-gold);
  color: var(--color-primary-darker);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-align: center;
  padding: 7px 6px;
  margin: 0 -24px;
  text-transform: uppercase;
}
.book-footer {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
}
.book-footer-mark {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
}
.book-footer-mark .icon {
  width: 11px;
  height: 11px;
}
.book-footer-text {
  font-size: 7.5px;
  line-height: 1.35;
  opacity: 0.85;
  letter-spacing: 0.02em;
}
.book-mockup--sm {
  width: 200px;
  box-shadow: var(--shadow-md);
}
.book-mockup--sm .book-title-wrap {
  margin-top: 14px;
}
.book-mockup--sm .book-title-wrap .line1 {
  font-size: 9px;
}
.book-mockup--sm .book-title-wrap .line2 {
  font-size: 15px;
}
.book-mockup--sm .book-subtitle {
  display: none;
}
.book-mockup--sm .book-issn {
  font-size: 6.5px;
}
.book-mockup--sm .book-banner {
  font-size: 6.5px;
  padding: 5px 4px;
  margin: 0 -14px;
}
.book-mockup--sm .book-footer {
  margin-top: 8px;
}
.book-mockup--sm .book-footer-text {
  font-size: 6px;
}
.book-mockup--sm .book-footer-mark {
  width: 14px;
  height: 14px;
}
.book-mockup--sm .book-footer-mark .icon {
  width: 8px;
  height: 8px;
}
.book-mockup--sm {
  padding: 16px 14px;
}

/* ---------- indexing.css (was: @import "/jsm-demo/css/layout/indexing.css") ---------- */
/* =========================================================
     INDEXING BAR
  ========================================================= */
.indexing-section {
  padding: 34px 0;
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
}
.indexing-title {
  text-align: center;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 20px;
}
.indexing-group + .indexing-group {
  margin-top: 26px;
}
.indexing-group-title {
  text-align: center;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin-bottom: 12px;
  opacity: 0.85;
}
.indexing-row {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px 14px;
}
.indexing-row + .indexing-row {
  margin-top: 12px;
}
.indexing-badge {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--color-text-secondary);
  background: #fff;
  border: 1px solid var(--color-border-strong);
  border-radius: 999px;
  padding: 8px 16px;
  transition:
    color 0.15s ease,
    border-color 0.15s ease;
}
.indexing-badge:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.indexing-badge .icon {
  width: 13px;
  height: 13px;
  opacity: 0.8;
}

.indexing-badge--target {
  border-style: dashed;
  color: var(--color-text-muted);
}
.indexing-badge--target:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.indexing-badge img {
  height: 22px;
  width: auto;
  max-width: none;
  display: inline-block;
  vertical-align: middle;
}

/* ---------- footer.css (was: @import "/jsm-demo/css/layout/footer.css") ---------- */
/* =========================================================
     FOOTER
  ========================================================= */
.site-footer {
  background: var(--color-footer-bg);
  color: var(--color-footer-text);
  padding: 24px 0;
}
.footer-links {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px 22px;
  font-size: 12.5px;
  padding-bottom: 18px;
  margin-bottom: 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}
.footer-nav {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}
.footer-nav a {
  color: var(--color-footer-text);
  opacity: 0.75;
  text-decoration: none;
  transition: opacity 0.15s ease;
}
.footer-nav a:hover {
  opacity: 1;
  text-decoration: underline;
}
.footer-badges {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 700;
  color: #fff;
  text-decoration: none;
  opacity: 0.9;
  transition: opacity 0.15s ease;
}
.footer-badge:hover {
  opacity: 1;
}
.footer-badge .icon {
  width: 14px;
  height: 14px;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px 22px;
  font-size: 12.5px;
}
.footer-left {
  display: grid;
  row-gap: 2px;
  align-items: center;
  /* gap: 14px; */
  flex-wrap: wrap;
}
.footer-right {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}
.footer-inner .sep {
  opacity: 0.4;
}
.footer-pkp {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 700;
  color: #fff;
}
.footer-pkp .icon {
  width: 14px;
  height: 14px;
}

/* ---------- jsm-home.css (base) ---------- */
:root {
  --color-primary: #7b1e2c;
  --color-primary-dark: #5a1520;
  --color-primary-darker: #3f0f17;
  --color-primary-light: #a63446;
  --color-primary-tint: #fbeeef;
  --color-gold: #c9a961;
  --color-gold-dark: #a9874a;
  --color-text: #211c1e;
  --color-text-secondary: #6b6469;
  --color-text-muted: #9c959a;
  --color-bg: #ffffff;
  --color-bg-alt: #f7f4f1;
  --color-bg-alt-2: #f1ece7;
  --color-border: #e7e1db;
  --color-border-strong: #d8d0c8;
  --color-footer-bg: #902d2d;
  --color-footer-text: #b9b2b8;
  --navy: #101e33;
  --navy-light: #1e3a5f;

  --font-serif: "Playfair Display", Georgia, "Times New Roman", serif;
  --font-sans:
    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  --shadow-sm: 0 1px 3px rgba(33, 20, 15, 0.06);
  --shadow-md: 0 6px 20px rgba(33, 20, 15, 0.08);
  --shadow-lg: 0 16px 40px rgba(33, 20, 15, 0.14);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 18px;

  --container: 80%;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
}

img {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
}
ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
button {
  font-family: inherit;
  cursor: pointer;
}
h1,
h2,
h3,
h4 {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 700;
}
p {
  margin: 0;
}
svg {
  display: block;
}
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}

.icon {
  width: 1em;
  height: 1em;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}
.icon-fill {
  fill: currentColor;
  stroke: none;
}

.eyebrow {
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--color-primary);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 24px;
  border-radius: var(--radius-sm);
  font-size: 14.5px;
  font-weight: 600;
  border: 1.5px solid transparent;
  transition:
    transform 0.15s ease,
    box-shadow 0.15s ease,
    background 0.15s ease,
    color 0.15s ease,
    border-color 0.15s ease;
  white-space: nowrap;
}
.btn .icon {
  width: 15px;
  height: 15px;
  transition: transform 0.15s ease;
}
.btn:hover .icon {
  transform: translateX(3px);
}
.btn-primary {
  background: var(--color-primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--color-primary-dark);
  box-shadow: var(--shadow-md);
}
.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-outline:hover {
  background: var(--color-primary);
  color: #fff;
}
.btn-sm {
  padding: 9px 16px;
  font-size: 13.5px;
}
.btn-block {
  width: 100%;
  justify-content: center;
}

/* =========================================================
     TOP UTILITY BAR
  ========================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.04);
}

.dropdown {
  position: relative;
}
.dropdown-toggle {
  background: none;
  border: none;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 0;
}
.dropdown-toggle:hover {
  color: var(--color-primary);
}
.dropdown-toggle .icon {
  width: 11px;
  height: 11px;
  transition: transform 0.18s ease;
}
.dropdown.open .dropdown-toggle .icon {
  transform: rotate(180deg);
}
.dropdown-menu {
  position: absolute;
  top: calc(100% + 14px);
  left: 50%;
  transform: translate(-50%, -6px);
  background: #fff;
  min-width: 150px;
  padding: 8px;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
  opacity: 0;
  visibility: hidden;
  transition:
    opacity 0.16s ease,
    transform 0.16s ease;
  z-index: 50;
}
.dropdown.open .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}
.dropdown-menu li a {
  display: block;
  padding: 9px 12px;
  font-size: 13.5px;
  border-radius: 6px;
  color: var(--color-text);
}
.dropdown-menu li a:hover {
  background: var(--color-bg-alt);
  color: var(--color-primary);
}


/* =========================================================
     SEARCH BAR
  ========================================================= */
.search-section {
  background: var(--color-bg-alt);
  padding: 22px 0;
  border-bottom: 1px solid var(--color-border);
}
.search-card {
  background: #fff;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
  padding: 20px 24px;
}
.search-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 14.5px;
  color: var(--color-text);
  margin-bottom: 14px;
}
.search-label .icon {
  width: 17px;
  height: 17px;
  color: var(--color-primary);
}
.search-form {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.search-select,
.search-input {
  height: 44px;
  border: 1.5px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  background: #fff;
  font-family: inherit;
  font-size: 13.8px;
  color: var(--color-text);
  padding: 0 14px;
  transition: border-color 0.15s ease;
}
.search-select {
  width: 100%;
  height: 44px;
  padding: 0 36px 0 14px; /* chừa chỗ cho icon */
  border: 1.5px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  background: #fff;
  cursor: pointer;
}
.select-icon {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  color: var(--color-text-secondary);
  font-size: 12px;
}
.search-select:hover,
.search-input:focus {
  border-color: var(--color-primary);
}
.search-input {
  flex: 1 1 220px;
  min-width: 180px;
}
.search-input::placeholder {
  color: var(--color-text-muted);
}
.search-submit {
  height: 44px;
  padding: 0 26px;
}
.search-foot {
  display: flex;
  justify-content: flex-end;
  margin-top: 12px;
}
.search-foot a {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.search-foot a .icon {
  width: 12px;
  height: 12px;
}
/* ===== Custom Select (tái sử dụng cho mọi .select-wrap) ===== */
.select-wrap {
  position: relative;
  border: 1.5px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
}

/* select gốc bị ẩn đi, chỉ dùng để giữ giá trị cho form submit */
.select-wrap select.search-select {
  position: absolute;
  opacity: 0;
  pointer-events: none;
  width: 1px;
  height: 1px;
}

.custom-select-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  border: 1px solid var(--gold);
  border-radius: 6px;
  background: #fff;
  color: var(--maroon-dark);
  font-size: 14px;
  cursor: pointer;
  transition:
    border-color 0.2s ease,
    box-shadow 0.2s ease;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.custom-select-trigger:hover {
  border-color: var(--maroon);
}

.select-wrap.open .custom-select-trigger {
  border-color: var(--maroon);
  box-shadow: 0 0 0 3px rgba(122, 31, 43, 0.12);
}

.select-wrap .select-icon {
  color: var(--maroon);
  font-size: 11px;
  margin-left: 8px;
  transition: transform 0.2s ease;
  flex: 0 0 auto;
}

.select-wrap.open .select-icon {
  transform: rotate(180deg);
}

.custom-select-options {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  min-width: 160px;
  background: #fff;
  border: 1px solid var(--gold-light);
  border-radius: 8px;
  box-shadow: 0 10px 30px rgba(90, 26, 36, 0.15);
  overflow: hidden;
  opacity: 0;
  transform: translateY(-6px);
  pointer-events: none;
  transition:
    opacity 0.18s ease,
    transform 0.18s ease;
  z-index: 30;
  max-height: 260px;
  overflow-y: auto;
}

.select-wrap.open .custom-select-options {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.custom-select-option {
  padding: 10px 14px;
  color: var(--text-dark);
  font-size: 14px;
  cursor: pointer;
  transition:
    background 0.15s ease,
    color 0.15s ease;
  border-left: 3px solid transparent;
}

.custom-select-option:hover {
  background: var(--gold-light);
  color: var(--maroon-dark);
}
/* 
      .custom-select-option.selected {
        background: var(--maroon);
        color: #fff;
        font-weight: 600;
        border-left: 3px solid var(--gold);
      } */

.custom-select-option.selected:hover {
  background: var(--maroon-light);
}

.demo-note {
  max-width: 1140px;
  margin: 20px auto 0;
  font-size: 12px;
  color: #999;
  text-align: center;
}
.demo-note code {
  background: var(--gold-light);
  padding: 1px 5px;
  border-radius: 4px;
  color: var(--maroon-dark);
}

@media (max-width: 640px) {
  .search-form {
    flex-direction: column;
    align-items: stretch;
  }
  .select-wrap {
    flex: 1 1 auto !important;
  }
  .search-submit {
    width: 100%;
    justify-content: center;
  }
}

/* =========================================================
     CONTENT GRID
  ========================================================= */
.content-section {
  padding: 56px 0;
  background: #fff;
}
.content-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr 1fr 0.95fr;
  gap: 22px;
  align-items: stretch;
}
.card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: #fff;
  display: flex;
  flex-direction: column;
  transition:
    box-shadow 0.2s ease,
    transform 0.2s ease;
}
.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 18px;
  border-bottom: 1px solid var(--color-border);
}
.card-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 15.5px;
  color: var(--color-primary);
}
.card-title .icon {
  width: 15px;
  height: 15px;
}
.card-title .icon-fill {
  color: var(--color-gold-dark);
}
.card-link {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  gap: 4px;
}
.card-link:hover {
  color: var(--color-primary);
}
.card-link .icon {
  width: 10px;
  height: 10px;
}
.card-body {
  padding: 20px 18px;
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 16px;
}

/* Current issue card */
.issue-cover-row {
  display: flex;
  justify-content: center;
  padding-top: 4px;
  max-width: 80%;
  margin: 0 auto;
}
.issue-meta {
  text-align: center;
}
.issue-meta .vol {
  font-weight: 700;
  font-size: 14.5px;
  color: var(--color-text);
}
.issue-meta .date {
  font-size: 12.5px;
  color: var(--color-text-secondary);
  margin-top: 2px;
}
.issue-issn {
  text-align: center;
  font-size: 11px;
  color: var(--color-text-muted);
  line-height: 1.7;
}
.card-body-push {
  margin-top: auto;
}

.issue-facts {
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: var(--color-bg-alt);
  border-radius: 10px;
  padding: 14px;
}
.issue-fact {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.issue-fact-icon {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: #fff;
  border: 1px solid var(--color-border);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.issue-fact-icon .icon {
  width: 14px;
  height: 14px;
}
.issue-fact-text {
  min-width: 0;
}
.issue-fact-label {
  display: block;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}
.issue-fact-value {
  display: block;
  font-size: 12.5px;
  color: var(--color-text);
  margin-top: 3px;
  line-height: 1.4;
  overflow-wrap: anywhere;
}
.issue-fact-value a {
  color: var(--color-primary);
  font-weight: 600;
}
.issue-fact-value a:hover {
  text-decoration: underline;
}

/* Article list */
.article-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.article-item {
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
}
.article-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}
.article-tag-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.article-badges {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.article-badge-oa {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--color-success);
  background: var(--color-success-tint);
  border-radius: 999px;
  padding: 2px;
}
.article-badge-oa .icon {
  width: 10px;
  height: 10px;
}
.article-tag {
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--color-primary);
  text-transform: uppercase;
}
.article-title {
  font-size: 14.5px;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.35;
  margin-top: 6px;
}
.article-title:hover {
  color: var(--color-primary);
}
.article-authors {
  font-size: 12px;
  color: var(--color-text-secondary);
  margin-top: 6px;
}
.article-dates {
  font-size: 11.5px;
  color: var(--color-text-secondary);
  margin-top: 8px;
}
.article-doi {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 11.5px;
  color: var(--color-text-secondary);
  margin-top: 6px;
}
.article-doi .icon {
  width: 11px;
  height: 11px;
  color: var(--color-text-muted);
  flex-shrink: 0;
}
.article-doi a {
  color: var(--color-primary);
  font-weight: 600;
}
.article-doi a:hover {
  text-decoration: underline;
}
.article-stats {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 9px;
  flex-wrap: wrap;
}
.article-stat {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  color: var(--color-text-muted);
  font-weight: 600;
}
.article-stat .icon {
  width: 12px;
  height: 12px;
}
.article-actions {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}
.article-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 8px;
}
.article-meta {
  font-size: 11px;
  color: var(--color-text-muted);
}
.pdf-link {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  font-weight: 700;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
  border-radius: 5px;
  padding: 3px 8px;
  flex-shrink: 0;
}
.pdf-link .icon {
  width: 11px;
  height: 11px;
}
.pdf-link:hover {
  background: var(--color-primary);
  color: #fff;
}

/* Editor's choice */
.editor-image {
  position: relative;
  margin: -20px -18px 0;
  /* height: 118px; */
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  overflow: hidden;
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
  max-width: 50%;
  margin: 0 auto;
}
.editor-image svg {
  width: 60%;
  height: 60%;
}
.editor-choice-body {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 4px;
}

/* Announcements */
.announcement-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.announcement-item {
  display: flex;
  gap: 12px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
}
.announcement-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}
.announcement-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-primary);
}
.announcement-sep {
  color: var(--color-border-strong);
  font-weight: 400;
}
.announcement-date-text {
  color: var(--color-text-muted);
  font-weight: 600;
  letter-spacing: normal;
  text-transform: none;
}
.announcement-date {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border: 1.5px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.announcement-day {
  font-size: 15px;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
}
.announcement-month {
  font-size: 9.5px;
  font-weight: 700;
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
  margin-top: 2px;
}
.announcement-content {
  min-width: 0;
}
.announcement-title {
  display: block;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.35;
  margin-top: 6px;
}
.announcement-title:hover {
  color: var(--color-primary);
}
.announcement-summary {
  font-size: 12.5px;
  color: var(--color-text-secondary);
  line-height: 1.55;
  margin-top: 6px;
}
.announcement-readmore {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-primary);
  margin-top: 8px;
}
.announcement-readmore .icon {
  width: 10px;
  height: 10px;
}
.announcement-readmore:hover {
  text-decoration: underline;
}
.announcement-sub {
  font-size: 11.5px;
  color: var(--color-text-secondary);
  margin-top: 5px;
}
.announcement-sub a {
  color: var(--color-primary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 3px;
}
.announcement-sub a .icon {
  width: 9px;
  height: 9px;
}

/* =========================================================
     FEATURES STRIP
  ========================================================= */
.features-strip {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: 20px 0;
}
.features-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
  max-width: 100% !important;
}
.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  flex: 1;
  padding: 0 14px;
  position: relative;
}
.feature-item:not(:last-child)::after {
  content: "";
  position: absolute;
  right: 0;
  top: 2px;
  bottom: 2px;
  width: 1px;
  background: var(--color-border-strong);
}
.feature-item:first-child {
  padding-left: 0;
}
.feature-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #fff;
  border: 1.5px solid var(--color-gold);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: var(--shadow-sm);
}
.feature-icon .icon {
  width: 17px;
  height: 17px;
}
.feature-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  line-height: 1.2;
}
.feature-title {
  display: block;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.3;
}
.feature-desc {
  display: block;
  font-size: 11px;
  color: var(--color-text-muted);
  margin-top: 2px;
}

/* =========================================================
     ABOUT PUBLISHER
  ========================================================= */
.about-section {
  padding: 48px 0;
  background: #fff;
}
.about-grid {
  display: grid;
  grid-template-columns: 0.5fr 1fr;
  gap: 80px;
  align-items: center;
}
.about-heading {
  font-size: 24px;
  margin-top: 8px;
  line-height: 1.25;
  color: var(--color-text);
}
.about-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-top: 14px;
}
.about-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13.5px;
  font-weight: 700;
  color: var(--color-primary);
  margin-top: 18px;
}
.about-link .icon {
  width: 12px;
  height: 12px;
}
.about-image {
  position: relative;
  height: 230px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(160deg, #9ca9bd 0%, #5b6b85 55%, #2e3a4e 100%);
}
.about-image svg {
  width: 100%;
  height: 100%;
}
.about-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
  width: 100%;
}
.stat-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  min-width: 0;
}
.stat-icon {
  width: 38px;
  height: 38px;
  border-radius: 9px;
  background: var(--color-primary-tint);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.stat-content {
  display: flex;
  flex-direction: column;
  min-width: 0; /* Quan trọng để text xuống dòng */
}
.stat-icon .icon {
  width: 18px;
  height: 18px;
}
.stat-label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  margin-top: 2px;
  line-height: 1.4;
}
.stat-value {
  display: block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}


/* =========================================================
     RESPONSIVE
  ========================================================= */
@media (max-width: 1180px) {
  .content-grid {
    grid-template-columns: 1fr 1fr;
  }
  .about-grid {
    grid-template-columns: 1fr 1fr;
  }
  .about-stats {
    display: flex;
    grid-column: 1 / -1;
    flex-direction: row;
    flex-wrap: wrap;
  }
  .stat-item {
    flex: 1 1 220px;
  }
  .hero-inner {
    grid-template-columns: 1fr;
  }
  .hero-visual {
    order: -1;
  }
  .hero-title {
    font-size: 40px;
  }
  .hero-subtitle {
    max-width: none;
  }
  .features-inner {
    flex-wrap: wrap;
    row-gap: 20px;
  }
  .feature-item {
    flex: 1 1 30%;
    padding: 0 10px 10px;
  }
  .feature-item::after {
    display: none;
  }
}
@media (max-width: 860px) {
  .container {
    padding: 0 20px;
  }
  .top-bar-inner {
    padding: 12px 0;
  }
  .utility-nav > .utility-link,
  .utility-nav > .divider-v,
  .utility-nav > .dropdown {
    display: none;
  }
  .utility-nav {
    gap: 14px;
  }
  .mobile-toggle {
    display: flex;
  }
  .brand-text-line1 {
    display: none;
  }
  .main-nav {
    display: none;
  }
  .main-nav.mobile-open {
    display: block;
  }
  .main-nav-inner {
    flex-direction: column;
    align-items: stretch;
    padding: 6px 0;
  }
  .nav-list {
    flex-direction: column;
    width: 100%;
  }
  .nav-link {
    padding: 13px 4px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    justify-content: space-between;
  }
  .nav-item.active .nav-link {
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  }
  .nav-dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border-radius: 0;
    display: none;
    background: rgba(255, 255, 255, 0.06);
    border-top: none;
  }
  .nav-item.open .nav-dropdown {
    display: block;
  }
  .nav-dropdown li a {
    color: #fff;
  }
  .nav-dropdown li a:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-gold);
  }
  .nav-search-btn {
    display: none;
  }
  .hero-title {
    font-size: 32px;
  }
  .hero-features {
    grid-template-columns: 1fr 1fr;
  }
  .content-grid {
    grid-template-columns: 1fr;
  }
  .about-grid {
    grid-template-columns: 1fr;
    text-align: left;
  }
  .about-image {
    order: -1;
  }
  .search-form {
    flex-direction: column;
  }
  .search-select,
  .search-input,
  .search-submit {
    width: 100%;
  }
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}
@media (max-width: 520px) {
  .hero-features {
    grid-template-columns: 1fr 1fr;
  }
  .feature-item {
    flex: 1 1 45%;
  }
  .hero-cta {
    flex-direction: column;
  }
  .hero-cta .btn {
    width: 100%;
    justify-content: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
  html {
    scroll-behavior: auto;
  }
}