/*
Theme Name: truyenxxx-mobile
Theme URI: https://truyenxxx.net
Author: truyenxxx.net
Description: Mobile-first WordPress theme for truyenxxx.net. Clean, fast, touch-friendly with dark mode support.
Version: 1.0
Text Domain: truyenxxx-mobile
*/

/* ========================================
   CSS Variables
   ======================================== */
:root {
  /* Colors */
  --color-primary: #00897b;
  --color-primary-dark: #004d40;
  --color-primary-light: #4db6ac;
  --color-accent: #d84315;
  --color-bg: #f0f2f5;
  --color-surface: #ffffff;
  --color-surface-alt: #f7f7f7;
  --color-border: #e0e0e0;
  --color-text: #333333;
  --color-text-secondary: #666666;
  --color-text-muted: #999999;
  --color-link: #00796b;
  --color-link-hover: #d84315;
  --color-tag-bg: #e0f2f1;
  --color-tag-text: #00695c;
  --color-update: #c62828;
  --color-excerpt: #6c8661;
  --color-header-bg: #00897b;
  --color-header-text: #ffffff;
  --color-footer-bg: #263238;
  --color-footer-text: #cfd8dc;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-size-base: 16px;
  --font-size-sm: 14px;
  --font-size-xs: 12px;
  --font-size-lg: 18px;
  --font-size-xl: 20px;
  --font-size-2xl: 24px;
  --line-height: 1.6;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 12px;
  --space-lg: 16px;
  --space-xl: 24px;
  --space-2xl: 32px;

  /* Misc */
  --radius: 8px;
  --radius-sm: 4px;
  --tap-target: 44px;
  --max-width: 680px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 2px 8px rgba(0,0,0,0.12);
  --transition: 0.2s ease;
}

/* Dark Mode */
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #121212;
    --color-surface: #1e1e1e;
    --color-surface-alt: #2a2a2a;
    --color-border: #333333;
    --color-text: #e0e0e0;
    --color-text-secondary: #b0b0b0;
    --color-text-muted: #888888;
    --color-link: #4db6ac;
    --color-link-hover: #ff8a65;
    --color-tag-bg: #1b3a36;
    --color-tag-text: #80cbc4;
    --color-excerpt: #a5c49b;
    --color-header-bg: #1a3a35;
    --color-footer-bg: #0d1518;
    --color-footer-text: #b0bec5;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 2px 8px rgba(0,0,0,0.4);
  }
}

/* ========================================
   Reset & Base
   ======================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: var(--font-size-base);
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a {
  color: var(--color-link);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover, a:active {
  color: var(--color-link-hover);
}

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

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text);
}

ul, ol {
  list-style: none;
}

/* ========================================
   Layout
   ======================================== */
.site-wrapper {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-content {
  flex: 1;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-lg);
}

/* ========================================
   Header
   ======================================== */
.site-header {
  background: var(--color-header-bg);
  color: var(--color-header-text);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-md);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-md) var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.site-logo a {
  color: var(--color-header-text);
  font-size: var(--font-size-xl);
  font-weight: 800;
  letter-spacing: -0.5px;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.site-logo a:hover {
  color: var(--color-header-text);
  opacity: 0.9;
}

/* Hamburger menu */
.menu-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--tap-target);
  height: var(--tap-target);
  background: none;
  border: none;
  color: var(--color-header-text);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
  flex-shrink: 0;
}

.menu-toggle:hover,
.menu-toggle:active {
  background: rgba(255,255,255,0.15);
}

.menu-toggle svg {
  width: 24px;
  height: 24px;
}

/* Navigation */
.main-nav {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.5);
  z-index: 200;
}

.main-nav.active {
  display: block;
}

.nav-panel {
  background: var(--color-surface);
  width: 280px;
  max-width: 80vw;
  height: 100%;
  padding: var(--space-xl) 0;
  overflow-y: auto;
  box-shadow: var(--shadow-md);
  animation: slideIn 0.25s ease;
}

@keyframes slideIn {
  from { transform: translateX(-100%); }
  to { transform: translateX(0); }
}

.nav-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--tap-target);
  height: var(--tap-target);
  background: none;
  border: none;
  color: var(--color-text);
  cursor: pointer;
  margin-left: var(--space-md);
  margin-bottom: var(--space-md);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xl);
}

.nav-menu {
  display: flex;
  flex-direction: column;
}

.nav-menu a {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-xl);
  min-height: var(--tap-target);
  font-size: var(--font-size-base);
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition);
}

.nav-menu a:hover,
.nav-menu a:active {
  background: var(--color-tag-bg);
  color: var(--color-primary);
}

.nav-menu a svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  opacity: 0.6;
}

/* Search in header */
.header-search {
  display: flex;
  align-items: center;
}

.header-search-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--tap-target);
  height: var(--tap-target);
  background: none;
  border: none;
  color: var(--color-header-text);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}

.header-search-btn:hover {
  background: rgba(255,255,255,0.15);
}

.header-search-btn svg {
  width: 22px;
  height: 22px;
}

/* ========================================
   Breadcrumb
   ======================================== */
.breadcrumb {
  padding: var(--space-md) 0;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-xs);
}

.breadcrumb a {
  color: var(--color-text-secondary);
}

.breadcrumb .sep {
  color: var(--color-text-muted);
}

/* ========================================
   Section Headers
   ======================================== */
.section-header {
  background: var(--color-primary);
  color: #fff;
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius) var(--radius) 0 0;
  margin-top: var(--space-xl);
  font-size: var(--font-size-base);
  font-weight: 700;
}

.section-header:first-child {
  margin-top: 0;
}

.section-header a {
  color: #fff;
}

.section-header h2 {
  font-size: var(--font-size-base);
  display: inline;
}

/* ========================================
   Notice / Announcement Box
   ======================================== */
.site-notice {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-lg);
  margin-bottom: var(--space-lg);
  font-size: var(--font-size-sm);
  line-height: 1.5;
  color: var(--color-text-secondary);
}

.site-notice strong a {
  color: var(--color-primary);
}

.site-notice .notice-alert {
  color: var(--color-update);
  display: block;
  margin-top: var(--space-sm);
  font-weight: 600;
}

/* ========================================
   Post List (Index / Archive)
   ======================================== */
.post-list {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 0 0 var(--radius) var(--radius);
  overflow: hidden;
}

.post-item {
  padding: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition);
}

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

.post-item:active {
  background: var(--color-surface-alt);
}

.post-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: var(--space-xs);
}

.post-title a {
  color: var(--color-text);
}

.post-title a:hover {
  color: var(--color-primary);
}

.post-update {
  color: var(--color-update);
  font-size: var(--font-size-sm);
  font-weight: 600;
}

.post-author {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
}

.post-author a {
  color: var(--color-primary);
  font-weight: 500;
}

.post-excerpt {
  font-size: var(--font-size-sm);
  color: var(--color-excerpt);
  line-height: 1.5;
  margin-bottom: var(--space-md);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.tag-link {
  display: inline-block;
  background: var(--color-tag-bg);
  color: var(--color-tag-text);
  padding: var(--space-xs) var(--space-md);
  border-radius: 20px;
  font-size: var(--font-size-xs);
  font-weight: 500;
  min-height: 28px;
  line-height: 20px;
  transition: background var(--transition), color var(--transition);
}

.tag-link:hover {
  background: var(--color-primary);
  color: #fff;
}

.tag-link.tag-category {
  background: var(--color-primary);
  color: #fff;
}

.tag-link.tag-highlight {
  background: var(--color-update);
  color: #fff;
}

/* Simple list items (categories listing) */
.simple-list {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 0 0 var(--radius) var(--radius);
}

.simple-list-item {
  display: block;
}

.simple-list-item a {
  display: flex;
  align-items: center;
  padding: var(--space-md) var(--space-lg);
  min-height: var(--tap-target);
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
  font-size: var(--font-size-base);
  transition: background var(--transition);
}

.simple-list-item:last-child a {
  border-bottom: none;
}

.simple-list-item a:hover,
.simple-list-item a:active {
  background: var(--color-surface-alt);
  color: var(--color-primary);
}

.simple-list-item .update-badge {
  color: var(--color-update);
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-left: var(--space-sm);
}

.view-more {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md) var(--space-lg);
  min-height: var(--tap-target);
  color: var(--color-primary);
  font-weight: 700;
  font-size: var(--font-size-base);
  border-top: 1px solid var(--color-border);
  transition: background var(--transition);
}

.view-more:hover {
  background: var(--color-tag-bg);
}

/* ========================================
   Pagination
   ======================================== */
.pagination {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-xl) 0;
}

.pagination a,
.pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: var(--tap-target);
  min-height: var(--tap-target);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius);
  font-size: var(--font-size-sm);
  font-weight: 500;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  transition: all var(--transition);
}

.pagination a:hover {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.pagination .current {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
  font-weight: 700;
}

.pagination .dots {
  border: none;
  background: none;
  min-width: auto;
  padding: var(--space-sm);
  color: var(--color-text-muted);
}

.pagination .next,
.pagination .prev {
  font-weight: 700;
}

/* ========================================
   Single Post
   ======================================== */
.single-article {
  background: var(--color-surface);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  overflow: hidden;
}

.single-header {
  padding: var(--space-xl) var(--space-lg) var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

.single-title {
  font-size: var(--font-size-2xl);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: var(--space-md);
}

.single-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.single-meta a {
  color: var(--color-primary);
}

.single-content {
  padding: var(--space-xl) var(--space-lg);
  font-size: var(--font-size-base);
  line-height: 1.8;
  color: var(--color-text);
}

.single-content p {
  margin-bottom: var(--space-lg);
}

.single-content a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.single-content img {
  border-radius: var(--radius);
  margin: var(--space-lg) auto;
}

.single-content h2, .single-content h3, .single-content h4 {
  display: block;
  margin-top: var(--space-xl);
  margin-bottom: var(--space-md);
}

.single-content h2 { font-size: var(--font-size-xl); }
.single-content h3 { font-size: var(--font-size-lg); }

.single-content blockquote {
  border-left: 4px solid var(--color-primary);
  padding: var(--space-md) var(--space-lg);
  margin: var(--space-lg) 0;
  background: var(--color-surface-alt);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-style: italic;
  color: var(--color-text-secondary);
}

/* Reading-optimized text for story content */
.ndtruyen {
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  margin-bottom: var(--space-sm);
  line-height: 1.8;
  padding: var(--space-md);
  font-size: var(--font-size-base);
}

.single-footer {
  padding: var(--space-lg);
  border-top: 1px solid var(--color-border);
}

.single-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

/* Post Navigation */
.post-nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.post-nav a {
  display: block;
  padding: var(--space-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  min-height: var(--tap-target);
  transition: all var(--transition);
}

.post-nav a:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.post-nav-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--space-xs);
}

.post-nav-title {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text);
}

/* ========================================
   Page
   ======================================== */
.page-content {
  background: var(--color-surface);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  padding: var(--space-xl) var(--space-lg);
}

.page-title {
  font-size: var(--font-size-2xl);
  font-weight: 800;
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-md);
  border-bottom: 2px solid var(--color-primary);
}

.page-body {
  font-size: var(--font-size-base);
  line-height: 1.8;
}

.page-body p {
  margin-bottom: var(--space-lg);
}

/* ========================================
   Search
   ======================================== */
.search-header {
  margin-bottom: var(--space-xl);
}

.search-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--space-lg);
}

.search-form {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.search-input {
  flex: 1;
  padding: var(--space-md) var(--space-lg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  font-size: var(--font-size-base);
  font-family: var(--font-family);
  background: var(--color-surface);
  color: var(--color-text);
  min-height: var(--tap-target);
  transition: border-color var(--transition);
  -webkit-appearance: none;
  appearance: none;
}

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

.search-submit {
  padding: var(--space-md) var(--space-xl);
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-size: var(--font-size-base);
  font-weight: 700;
  font-family: var(--font-family);
  cursor: pointer;
  min-height: var(--tap-target);
  min-width: var(--tap-target);
  transition: background var(--transition);
  -webkit-appearance: none;
  appearance: none;
}

.search-submit:hover,
.search-submit:active {
  background: var(--color-primary-dark);
}

.search-count {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* ========================================
   404
   ======================================== */
.error-404 {
  text-align: center;
  padding: var(--space-2xl) var(--space-lg);
}

.error-code {
  font-size: 80px;
  font-weight: 900;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--space-md);
}

.error-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-lg);
}

.error-message {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
}

.error-home {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md) var(--space-2xl);
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: var(--font-size-base);
  min-height: var(--tap-target);
  transition: background var(--transition);
}

.error-home:hover {
  background: var(--color-primary-dark);
  color: #fff;
}

/* ========================================
   Footer
   ======================================== */
.site-footer {
  background: var(--color-footer-bg);
  color: var(--color-footer-text);
  margin-top: auto;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-xl) var(--space-lg);
}

.footer-section {
  margin-bottom: var(--space-xl);
}

.footer-section:last-child {
  margin-bottom: 0;
}

.footer-title {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: #fff;
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--color-primary);
  display: inline-block;
}

.footer-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.footer-tag {
  display: inline-flex;
  align-items: center;
  padding: var(--space-xs) var(--space-md);
  background: rgba(255,255,255,0.08);
  color: var(--color-footer-text);
  border-radius: 20px;
  font-size: var(--font-size-xs);
  min-height: 32px;
  transition: background var(--transition);
}

.footer-tag:hover {
  background: var(--color-primary);
  color: #fff;
}

.footer-authors {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-sm);
}

.footer-author-link {
  display: flex;
  align-items: center;
  padding: var(--space-sm) var(--space-md);
  min-height: 36px;
  color: var(--color-footer-text);
  font-size: var(--font-size-sm);
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}

.footer-author-link:hover {
  background: rgba(255,255,255,0.08);
  color: var(--color-primary-light);
}

.footer-top-stories a {
  display: block;
  padding: var(--space-sm) 0;
  color: var(--color-footer-text);
  font-size: var(--font-size-sm);
  border-bottom: 1px solid rgba(255,255,255,0.05);
  min-height: 36px;
  line-height: 20px;
}

.footer-top-stories a:hover {
  color: var(--color-primary-light);
}

.footer-top-stories .rank {
  color: var(--color-primary-light);
  font-weight: 700;
  margin-right: var(--space-sm);
  font-size: var(--font-size-xs);
}

.footer-bottom {
  text-align: center;
  padding: var(--space-lg);
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.footer-bottom a {
  color: var(--color-primary-light);
}

/* ========================================
   Utilities
   ======================================== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

.text-center { text-align: center; }
.mt-lg { margin-top: var(--space-lg); }
.mb-lg { margin-bottom: var(--space-lg); }

/* Date display */
.post-list-date {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
  text-align: right;
}

/* ========================================
   Responsive - Tablet & Desktop
   ======================================== */
@media screen and (min-width: 768px) {
  :root {
    --max-width: 720px;
  }

  .footer-authors {
    grid-template-columns: repeat(3, 1fr);
  }

  .post-nav {
    flex-direction: row;
  }

  .post-nav a {
    flex: 1;
  }

  .search-form {
    max-width: 500px;
  }
}

@media screen and (min-width: 1024px) {
  :root {
    --max-width: 780px;
  }

  /* Larger reading font on desktop */
  .single-content,
  .ndtruyen {
    font-size: 18px;
    line-height: 1.9;
  }
}

/* ========================================
   Print
   ======================================== */
@media print {
  .site-header,
  .site-footer,
  .menu-toggle,
  .main-nav,
  .pagination,
  .post-nav {
    display: none !important;
  }

  body {
    background: #fff;
    color: #000;
  }

  .single-content {
    font-size: 12pt;
  }
}

/* ==================== Ad Slots ==================== */
.ad-slot {
    text-align: center;
    margin: var(--space-sm) 0;
    overflow: hidden;
}
.ad-slot img {
    max-width: 100%;
    height: auto;
}
.ad-top {
    padding: var(--space-xs) 0;
}
.ad-mid {
    margin: var(--space-md) 0;
}
.ad-catfish {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 9999;
}
/* Sticky footer ad styling */
.sticky-footer {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: transparent;
    z-index: 9999;
    text-align: center;
    padding: 4px;
}
.sticky-footer img {
    display: block;
    margin: 0 auto;
    max-width: 320px;
    height: auto;
    display: inline-block;
}
.sticky-x-button {
    position: absolute;
    top: 2px;
    right: 8px;
    color: #fff;
    background: rgba(255,0,0,0.7);
    padding: 2px 8px;
    font-size: 12px;
    cursor: pointer;
    border-radius: 3px;
    z-index: 10000;
}
.sticky-x-button:hover {
    background: rgba(255,0,0,1);
}