/* 
  nguoigia.net — Phong cách Warm Editorial
  Thiết kế tối ưu cho người cao tuổi Việt Nam: Rõ ràng, dễ đọc, tương phản tốt.
*/

/* 1. Thiết lập biến CSS */
:root {
  /* Bảng màu chính */
  --bg-color: #fafaf7; /* Trắng ngà ấm, dịu mắt */
  --text-color: #2c2825; /* Nâu đen ấm, dễ đọc hơn màu đen thuần */
  --text-muted: #5c554f; /* Nâu xám đậm cho thông tin phụ */
  --accent-color: #2e7d5e; /* Xanh lá trầm - Sức khỏe, bình an */
  --accent-hover: #1e533e;
  --secondary-color: #c8762a; /* Cam đất - Dùng cho CTA phụ, tương tác */
  --secondary-hover: #a0591d;
  --border-color: #e2dfd9; /* Đường viền nhẹ nhàng */
  --card-bg: #ffffff;
  --share-color: #1960ff;
  --share-hover: #005eff;

  /* Font chữ chính */
  --font-title: "Lora", Georgia, serif;
  --font-body:
    "Be Vietnam Pro", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    sans-serif;

  /* Cỡ chữ mặc định (Cỡ chữ cơ sở) */
  --base-font-size: 18px;

  /* Khoảng cách */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;

  /* Chiều rộng tối đa */
  --max-width: 1000px;
}

/* Updated layout to use Flexbox for sticky footer and natural player flow */

/* Ensure html and body take full viewport height */
html,
body {
  height: 100%;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: var(--font-body);
}

/* Main content grows to fill space */
main {
  flex: 1 0 auto;
  padding: var(--spacing-lg) var(--spacing-sm);
}

/* Footer always at bottom */
footer {
  flex-shrink: 0;
  margin-top: auto;
  padding: var(--spacing-sm) var(--spacing-md);
  text-align: center;
}

/* Audio player now part of normal flow, not fixed */
#audio-player {
  width: 100%;
  background-color: var(--bg-color);
  color: var(--text-color);
  padding: var(--spacing-sm);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  position: static;
  order: 3; /* after main, before footer */
}

/* When player is hidden, remove from layout */
#audio-player.hidden {
  display: none;
}

/* Existing player inner elements retain their styling */
#audio-player .player-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Preserve button sizing constraints */
button.player-btn {
  min-width: 44px;
  max-width: 44px;
  height: 44px;
  font-size: 0.9rem;
}

/* Ensure speed selector aligns with title */
.player-speed {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

/* 2. Cấu trúc cỡ chữ linh hoạt cho người cao tuổi */
main {
  font-size: var(--base-font-size);
}
main.font-normal {
  --base-font-size: 18px;
}
main.font-large {
  --base-font-size: 22px;
}
main.font-xlarge {
  --base-font-size: 26px;
}

/* Reset cơ bản */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 18px; /* fixed base size */
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: var(--font-body);
  line-height: 1.8;
  transition:
    font-size 0.2s ease,
    background-color 0.2s ease,
    color 0.2s ease;
}

/* 3. Tiêu chuẩn Web Accessibility (WCAG) - Focus state */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 3px solid var(--secondary-color);
  outline-offset: 4px;
}

a {
  color: var(--accent-color);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
  transition: color 0.2s ease;
}

a:hover,
a:active {
  color: var(--accent-hover);
  text-decoration-thickness: 2px;
}

/* Nút bấm chuẩn tiếp cận (Touch Target tối thiểu 48px x 48px) */
button,
.btn {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  padding: 0.75rem 1.5rem;
  min-height: 48px;
  min-width: 48px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  transition:
    background-color 0.2s ease,
    transform 0.1s ease;
}

.btn-primary {
  background-color: var(--accent-color);
  color: #ffffff;
}

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

.btn-secondary {
  background-color: transparent;
  color: var(--text-color);
  border: 2px solid var(--border-color);
}

.btn-secondary:hover {
  background-color: rgba(0, 0, 0, 0.03);
  border-color: var(--text-color);
}
.btn-share {
  background-color: var(--share-color);
  color: #ffffff;
}
.btn-share:hover {
  background-color: var(--share-hover);
}
.btn-accent {
  background-color: var(--secondary-color);
  color: #ffffff;
}

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

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6,
.serif-font {
  font-family: var(--font-title);
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-color);
  margin-bottom: var(--spacing-sm);
}

h1 {
  font-size: 2.2rem;
}
h2 {
  font-size: 1.6rem;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 0.5rem;
  margin-top: var(--spacing-lg);
}
h3 {
  font-size: 1.3rem;
}

/* 4. Layout & Responsive (Mobile-First) */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding-left: var(--spacing-sm) !important;
  padding-right: var(--spacing-sm) !important;
}

/* Header */
header {
  background-color: var(--bg-color);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  font-size: 18px !important; /* Luôn giữ cỡ chữ A cố định cho Header */
}

.header-container {
  display: flex;
  flex-direction: column;
  max-width: 100% !important;
  padding: var(--spacing-sm) var(--spacing-md);
  gap: var(--spacing-sm);
}

.header-top-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.logo-link {
  font-family: var(--font-title);
  font-size: 1.8em;
  font-weight: 800;
  color: var(--accent-color);
  text-decoration: none;
}

.logo-link:hover {
  color: var(--accent-hover);
}

/* Nút Hamburger */
.hamburger-btn {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  min-width: 44px;
  min-height: 44px;
  gap: 5px;
}

.hamburger-line {
  display: block;
  width: 24px;
  height: 3px;
  background-color: var(--text-color);
  border-radius: 2px;
  transition:
    transform 0.2s ease,
    opacity 0.2s ease;
}

.hamburger-btn.open .hamburger-line:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.hamburger-btn.open .hamburger-line:nth-child(2) {
  opacity: 0;
}

.hamburger-btn.open .hamburger-line:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Menu điều hướng (Di động/Máy tính bảng) */
.nav-menu {
  display: none;
  width: 100%;
}

.nav-menu.open {
  display: block;
}

.nav-list {
  display: flex;
  flex-direction: column;
  list-style: none;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) 0;
  border-top: 1px solid var(--border-color);
}

.nav-link {
  font-weight: 600;
  color: var(--text-color);
  text-decoration: none;
  padding: var(--spacing-xs) 0;
  display: block;
  border-left: 4px solid transparent;
}

.nav-link:hover,
.nav-link.active {
  color: var(--accent-color);
  text-decoration: none;
}

.nav-link.active {
  border-left-color: var(--accent-color);
  padding-left: var(--spacing-xs);
}

/* Cụm chức năng (A+, Đăng nhập) */
.header-utils {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  gap: var(--spacing-sm);
}

.resizer-group {
  display: inline-flex;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background-color: var(--card-bg);
  overflow: hidden;
}

.resizer-btn {
  background: none;
  border: none;
  border-right: 1px solid var(--border-color);
  font-size: 0.95em;
  font-weight: bold;
  cursor: pointer;
  min-height: 44px; /* Touch target tối thiểu 44px */
  min-width: 44px; /* Touch target tối thiểu 44px */
  display: flex;
  align-items: center;
  justify-content: center;
}

.resizer-btn:last-child {
  border-right: none;
}

.resizer-btn.active {
  background-color: var(--accent-color);
  color: #ffffff;
}

.login-nav-btn {
  font-size: 0.9em;
  padding: 0.5rem 1rem;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

@media (max-width: 767px) {
  .resizer-btn {
    min-height: 38px;
    min-width: 38px;
    max-width: 44px;
    font-size: 0.85em;
  }

  .login-nav-btn {
    min-height: 38px;
    padding: 0.4rem 0.8rem;
    font-size: 0.8em;
  }
  .share-group {
    width: 100%;
    flex-direction: column;
  }
  .share-group .btn {
    font-size: 80%;
  }
}

/* ----------------------------------------- */
/* Breakpoint: Máy tính bảng (850px - 1279px) */
/* ----------------------------------------- */
@media (min-width: 850px) and (max-width: 1279px) {
  .header-container {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
  }

  .header-top-row {
    width: auto;
  }

  .header-utils {
    width: auto;
  }

  .nav-menu {
    order: 3;
    width: 100%;
  }
}

/* ----------------------------------------- */
/* Breakpoint: Máy tính để bàn (>= 1280px)   */
/* ----------------------------------------- */
@media (min-width: 1280px) {
  .header-container {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
  }

  .header-top-row {
    width: auto;
  }

  .hamburger-btn {
    display: none;
  }

  .nav-menu {
    display: block;
    width: auto;
    flex-grow: 1;
  }

  .nav-list {
    flex-direction: row;
    justify-content: center;
    border-top: none;
    padding: 0;
    gap: var(--spacing-lg);
  }

  .nav-link {
    padding: var(--spacing-xs) 0;
  }

  .nav-link.active {
    border-left: none;
    border-bottom: 3px solid var(--accent-color);
    padding-left: 0;
  }

  .header-utils {
    width: auto;
  }
}

/* Main Content Grid */
main {
  padding-top: 3.5rem;
  padding-bottom: 3.5rem;
}

/* Hero Section */
.hero-card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.02);
}

.tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--accent-color);
  background-color: rgba(46, 125, 94, 0.1);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  margin-bottom: var(--spacing-xs);
  text-decoration: none;
}

.tag:hover {
  background-color: rgba(46, 125, 94, 0.2);
}

.hero-title a {
  color: var(--text-color);
  text-decoration: none;
}

.hero-title a:hover {
  color: var(--accent-color);
}

.hero-summary {
  margin-bottom: var(--spacing-md);
  color: var(--text-muted);
}

/* Khám phá danh mục */
.category-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xl);
}

@media (min-width: 600px) {
  .category-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .category-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.category-card {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  border-radius: 10px;
  text-decoration: none;
  color: var(--text-color);
  border: 1px solid rgba(0, 0, 0, 0.05);
  font-family: var(--font-title);
  font-weight: bold;
  font-size: 1.1rem;
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease;
}

.category-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.05);
}

.category-icon {
  font-size: 1.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: rgba(255, 255, 255, 0.8);
  border-radius: 50%;
}

/* Danh sách bài viết mới */
.article-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.article-card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.article-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.article-date {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.article-title {
  font-size: 1.4rem;
}

.article-title a {
  color: var(--text-color);
  text-decoration: none;
}

.article-title a:hover {
  color: var(--accent-color);
}

.article-summary {
  color: var(--text-muted);
  margin-bottom: var(--spacing-sm);
}

.article-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-xs);
}

/* Trang chi tiết bài viết (Detail View - Không ảnh) */
.article-detail-container {
  max-width: 750px;
  margin: 0 auto;
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: var(--spacing-md) var(--spacing-sm);
}

@media (min-width: 600px) {
  .article-detail-container {
    padding: var(--spacing-lg);
  }
}

.detail-header {
  margin-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
  padding-bottom: var(--spacing-md);
}

.detail-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: var(--spacing-xs);
}

.detail-content {
  font-size: 1.1rem;
  line-height: 1.9;
}

.detail-content p {
  margin-bottom: var(--spacing-md);
  text-align: justify;
}

/* Trang danh mục & Tìm kiếm */
.search-section {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.search-box {
  display: flex;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
}

.search-input {
  flex-grow: 1;
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 0.75rem 1rem;
  border: 2px solid var(--border-color);
  border-radius: 6px;
  min-height: 48px;
}

.search-input:focus {
  border-color: var(--accent-color);
  outline: none;
}

.subcategories-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  list-style: none;
  align-items: center;
}

.subcategory-btn {
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  padding: 0.4rem 1rem;
  border-radius: 20px;
  font-size: 0.9rem;
  cursor: pointer;
  min-height: 40px;
}

.subcategory-btn.active {
  background-color: var(--accent-color);
  color: #ffffff;
  border-color: var(--accent-color);
}

.pagination {
  display: flex;
  justify-content: center;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-xl);
}

.page-btn {
  min-width: 48px;
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-color);
  background-color: var(--card-bg);
  border-radius: 6px;
  cursor: pointer;
  font-weight: bold;
}

.page-btn.active {
  background-color: var(--accent-color);
  color: #ffffff;
  border-color: var(--accent-color);
}

/* Trang tài khoản & quản lý thành viên */
.account-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

@media (min-width: 768px) {
  .account-container {
    grid-template-columns: 1fr 2fr;
  }
}

.auth-card {
  max-width: 500px;
  margin: 0 auto;
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: var(--spacing-lg);
}

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.form-input {
  width: 100%;
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 0.75rem 1rem;
  border: 2px solid var(--border-color);
  border-radius: 6px;
  min-height: 48px;
}

.form-input:focus {
  border-color: var(--accent-color);
  outline: none;
}

.auth-social {
  margin-top: var(--spacing-md);
  border-top: 1px solid var(--border-color);
  padding-top: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.profile-card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: var(--spacing-md);
}

.tabs-header {
  display: flex;
  border-bottom: 2px solid var(--border-color);
  margin-bottom: var(--spacing-md);
  gap: var(--spacing-sm);
}

.tab-btn {
  background: none;
  border: none;
  font-size: 1.1rem;
  font-weight: bold;
  padding: 0.75rem 1rem;
  cursor: pointer;
  color: var(--text-muted);
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  min-height: 48px;
}

.tab-btn.active {
  color: var(--accent-color);
  border-bottom-color: var(--accent-color);
}

.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
}

/* Trình phát âm thanh nổi bật ở chân trang (Audio Player Footer) */
.audio-player-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--bg-color); /* Trắng ngà ấm (#FAFAF7) */
  color: var(--text-color); /* Nâu đen ấm (#2C2825) */
  padding: 0.75rem 1.5rem;
  border: 2px solid var(--accent-color); /* Viền màu xanh lá trầm (#2E7D5E) */
  z-index: 1000;
  display: none; /* Chỉ hiện khi kích hoạt */
  box-shadow: 0 -8px 24px rgba(44, 40, 37, 0.08); /* Đổ bóng màu nâu đen ấm */
}

.audio-player-bar.active {
  display: block;
}

.player-layout {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

/* Nút Play/Pause tròn nâu đen ấm, icon trắng */
.custom-play-btn {
  background-color: var(--text-color); /* Nâu đen ấm (#2C2825) */
  color: #ffffff;
  border: none;
  border-radius: 50%;
  width: 52px;
  height: 52px;
  min-width: 52px;
  min-height: 52px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  transition: transform 0.1s ease;
  padding: 0;
}

.custom-play-btn:hover {
  transform: scale(1.05);
}

.custom-play-btn span {
  display: inline-block;
  margin-left: 2px; /* Căn chỉnh icon tam giác nằm giữa hình tròn */
}

/* Cụm giữa */
.player-middle-group {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  min-width: 0; /* Cho phép text-overflow hoạt động */
}

/* Hàng tiêu đề + nút tốc độ */
.player-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-sm);
  width: 100%;
}

.player-title-text-container {
  display: flex;
  align-items: center;
  overflow: hidden;
  white-space: nowrap;
  flex-grow: 1;
  min-width: 0;
  color: var(--text-color);
  font-size: 0.95rem;
}

.player-title-text-container .prefix {
  font-weight: bold;
  flex-shrink: 0;
  background-color: var(--bg-color); /* Che phủ phần text chạy dưới */
  padding-right: 6px;
  z-index: 2;
}

.marquee-wrapper {
  overflow: hidden;
  white-space: nowrap;
  display: block;
  flex-grow: 1;
  position: relative;
}

.marquee-text {
  display: inline-block;
  white-space: nowrap;
  padding-left: 100%; /* Bắt đầu chạy từ ngoài rìa vào */
  animation: marquee-scroll 18s linear infinite;
  font-weight: 600;
}

@keyframes marquee-scroll {
  0% {
    transform: translate3d(0, 0, 0);
  }
  100% {
    transform: translate3d(-100%, 0, 0);
  }
}

.player-progress-container {
  display: flex;
  align-items: center;
  width: 100%;
  gap: 8px;
}

.player-progress-bar {
  width: 100%;
  height: 8px;
  background-color: var(
    --border-color
  ); /* Phần chưa chạy màu xám ngà ấm (#E2DFD9) */
  border-radius: 4px;
  position: relative;
  cursor: pointer;
  overflow: hidden;
}

.player-progress-fill {
  height: 100%;
  background-color: var(
    --accent-color
  ); /* Phần đã chạy màu xanh lá trầm (#2E7D5E) */
  width: 0%;
}

/* Cụm bên phải */
.player-right-group {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-shrink: 0;
}

/* Nút tốc độ hình viên thuốc màu trắng, chữ đen, viền mờ */
.speed-pill-wrapper {
  position: relative;
  background-color: #ffffff;
  border: 1px solid #b0b0b0;
  border-radius: 20px;
  padding: 2px 10px;
  display: flex;
  align-items: center;
}

.custom-speed-select {
  background-color: #ffffff !important;
  border: none !important;
  color: #000000 !important;
  font-family: var(--font-body) !important;
  font-size: 0.85rem !important;
  font-weight: 600 !important;
  cursor: pointer !important;
  outline: none !important;
  padding: 4px 8px !important;
  border-radius: 4px !important;
  min-height: 32px !important;
  min-width: 100px !important;
}

/* Global select styling */
select {
  background-color: #ffffff !important;
  color: #000000 !important;
  color-scheme: light !important;
}

select option {
  background-color: #ffffff !important;
  color: #000000 !important;
}

select option:checked {
  background-color: #e8f5e9 !important;
  color: #000000 !important;
}

.custom-speed-select option {
  background-color: #ffffff !important;
  color: #000000 !important;
  padding: 6px 4px !important;
  font-family: var(--font-body) !important;
  font-size: 0.85rem !important;
}

.custom-speed-select option:hover {
  background-color: #e8f5e9 !important;
  color: #000000 !important;
}

/* Nút đóng hình chữ X màu đen lớn */
.custom-close-btn {
  background: transparent;
  border: none;
  color: #000000;
  font-size: 1.4rem;
  font-weight: bold;
  cursor: pointer;
  padding: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
}

.custom-close-btn:hover {
  opacity: 0.7;
}

/* Responsive cho player trên thiết bị di động */
@media (max-width: 767px) {
  .player-layout {
    gap: 0.75rem;
  }

  .custom-play-btn {
    width: 44px;
    height: 44px;
    min-width: 44px;
    min-height: 44px;
    font-size: 1.1rem;
  }

  .player-right-group {
    gap: 0.5rem;
  }

  .speed-pill-wrapper {
    padding: 1px 6px;
  }

  .custom-speed-select {
    font-size: 0.75rem;
  }
}

/* Footer */
footer {
  background-color: var(--card-bg);
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-xl) 0 var(--spacing-lg) 0;
  text-align: center;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  list-style: none;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--text-color);
  text-decoration: underline;
}
/* Khác: Đánh giá/Tương tác chi tiết bài viết */
.interaction-box {
  margin-top: var(--spacing-lg);
  border-top: 1px solid var(--border-color);
  padding-top: var(--spacing-md);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-sm);
}

.share-group {
  display: flex;
  gap: var(--spacing-xs);
}

.comment-section {
  margin-top: var(--spacing-lg);
}

.comment-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.comment-item {
  background-color: var(--bg-color);
  padding: var(--spacing-sm);
  border-radius: 8px;
  font-size: 0.95rem;
}

.comment-author {
  font-weight: bold;
  color: var(--accent-color);
  margin-bottom: 2px;
}

.toast {
  position: fixed;
  bottom: 140px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--accent-color);
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: 30px;
  font-size: 0.95rem;
  z-index: 10000;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
  display: none;
}

/* Bootstrap dropdown compatibility inside nav-list */
.nav-list .dropdown-menu {
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background-color: var(--card-bg);
  box-shadow: 0 4px 12px rgba(44, 40, 37, 0.08);
  padding: 0.4rem 0;
  min-width: 200px;
}

.nav-list .dropdown-item {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--text-color);
  padding: 0.5rem 1rem;
  font-weight: 500;
}

.nav-list .dropdown-item:hover,
.nav-list .dropdown-item:focus {
  background-color: rgba(46, 125, 94, 0.08);
  color: var(--accent-color);
}

.nav-list .dropdown-divider {
  border-color: var(--border-color);
  margin: 0.25rem 0;
}

/* Bootstrap form/table/card adjustments for new palette */
.card {
  border-color: var(--border-color);
  border-radius: 10px;
}

.card-body {
  font-family: var(--font-body);
}

.table {
  font-family: var(--font-body);
  color: var(--text-color);
}

.table thead th {
  color: var(--text-muted);
  font-weight: 700;
  border-color: var(--border-color);
}

.table td, .table th {
  border-color: var(--border-color);
}

.form-control, .form-select {
  font-family: var(--font-body);
  border-color: var(--border-color);
  color: var(--text-color);
}

.form-control:focus, .form-select:focus {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 0.2rem rgba(46, 125, 94, 0.2);
}

.form-label {
  font-family: var(--font-body);
  font-weight: 600;
  color: var(--text-color);
}

.badge.bg-secondary {
  background-color: rgba(46, 125, 94, 0.12) !important;
  color: var(--accent-color) !important;
  font-family: var(--font-body);
  font-weight: 700;
}

.alert-success {
  background-color: rgba(46, 125, 94, 0.1);
  border-color: rgba(46, 125, 94, 0.3);
  color: var(--accent-hover);
}

.alert-danger {
  background-color: rgba(200, 60, 60, 0.08);
  border-color: rgba(200, 60, 60, 0.25);
  color: #8b1a1a;
}

.alert-info {
  background-color: rgba(46, 125, 94, 0.06);
  border-color: rgba(46, 125, 94, 0.2);
  color: var(--accent-hover);
}

/* Bootstrap pagination uses new palette */
.pagination .page-link {
  font-family: var(--font-body);
  color: var(--accent-color);
  border-color: var(--border-color);
  background-color: var(--card-bg);
}

.pagination .page-item.active .page-link {
  background-color: var(--accent-color);
  border-color: var(--accent-color);
  color: #fff;
}

.pagination .page-link:hover {
  background-color: rgba(46, 125, 94, 0.08);
  color: var(--accent-hover);
}

/* Bootstrap btn-* variants: remap to design palette */
.btn-outline-primary {
  color: var(--accent-color);
  border-color: var(--accent-color);
}
.btn-outline-primary:hover {
  background-color: var(--accent-color);
  border-color: var(--accent-color);
  color: #fff;
}
.btn-outline-secondary {
  color: var(--text-color);
  border-color: var(--border-color);
  background-color: transparent;
}
.btn-outline-secondary:hover {
  background-color: rgba(0, 0, 0, 0.04);
  border-color: var(--text-color);
  color: var(--text-color);
}
.btn-outline-danger {
  color: #c0392b;
  border-color: #c0392b;
}
.btn-outline-danger:hover {
  background-color: #c0392b;
  color: #fff;
}
.btn-outline-warning {
  color: var(--secondary-color);
  border-color: var(--secondary-color);
}
.btn-outline-warning:hover {
  background-color: var(--secondary-color);
  color: #fff;
}
.btn-warning {
  background-color: var(--secondary-color);
  border-color: var(--secondary-color);
  color: #fff;
}
.btn-warning:hover {
  background-color: var(--secondary-hover);
  border-color: var(--secondary-hover);
  color: #fff;
}
.btn-danger {
  background-color: #c0392b;
  border-color: #c0392b;
  color: #fff;
}
.btn-success {
  background-color: var(--accent-color);
  border-color: var(--accent-color);
  color: #fff;
}
.btn-success:hover {
  background-color: var(--accent-hover);
  border-color: var(--accent-hover);
  color: #fff;
}
.btn-outline-success {
  color: var(--accent-color);
  border-color: var(--accent-color);
}
.btn-outline-success:hover {
  background-color: var(--accent-color);
  color: #fff;
}
.btn-outline-info {
  color: var(--accent-color);
  border-color: var(--accent-color);
}
.btn-outline-info:hover {
  background-color: var(--accent-color);
  color: #fff;
}
.btn-info {
  background-color: var(--accent-color);
  border-color: var(--accent-color);
  color: #fff;
}
.btn-sm {
  font-size: 0.85rem;
  padding: 0.35rem 0.8rem;
  min-height: 36px;
  min-width: unset;
}
.btn-lg {
  font-size: 1.1rem;
  padding: 0.85rem 1.75rem;
  min-height: 56px;
}
.btn-close {
  min-height: unset;
  min-width: unset;
  padding: 0.25rem;
}

/* Dashboard: standard Bootstrap sizing, not elderly-optimized */
.dashboard {
  font-size: 1rem;
}
.dashboard button,
.dashboard .btn {
  min-height: unset;
  min-width: unset;
  padding: 0.375rem 0.75rem;
  font-size: 0.875rem;
}
.dashboard .btn-sm {
  padding: 0.2rem 0.45rem;
  font-size: 0.775rem;
  min-height: unset;
}
.dashboard .btn-lg {
  padding: 0.5rem 1rem;
  font-size: 1rem;
  min-height: unset;
}
.dashboard .form-control,
.dashboard .form-select {
  padding: 0.375rem 0.75rem;
  font-size: 0.9rem;
}