/*
Theme Name: NeuroStack
Theme URI: https://neurostack.local
Author: NeuroStack Team
Author URI: https://neurostack.local
Description: NeuroStackのカスタムテーマ - DevelopersIO風のモダンなテックメディアデザイン
Version: 2.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: neurostack
Tags: blog, responsive, custom-menu, dark-mode
*/

/* ================================================
   CSS Variables & Theme System
   ================================================ */
:root {
  /* Core Colors - Light Mode */
  --color-bg-primary: #ffffff;
  --color-bg-secondary: #f8fafc;
  --color-bg-tertiary: #f1f5f9;
  --color-bg-card: #ffffff;
  --color-bg-header: #ffffff;

  --color-text-primary: #0f172a;
  --color-text-secondary: #475569;
  --color-text-muted: #94a3b8;
  --color-text-inverse: #ffffff;

  --color-border: #e2e8f0;
  --color-border-light: #f1f5f9;

  /* Multi-color Accent System (DevelopersIO inspired) */
  --color-accent-primary: #06b6d4; /* Cyan */
  --color-accent-secondary: #8b5cf6; /* Purple */
  --color-accent-tertiary: #f59e0b; /* Amber */
  --color-accent-success: #10b981; /* Emerald */
  --color-accent-warning: #f97316; /* Orange */
  --color-accent-danger: #ef4444; /* Red */
  --color-accent-info: #3b82f6; /* Blue */
  --color-accent-pink: #ec4899; /* Pink */

  /* Category Colors (シンプル4カテゴリ) */
  --color-cat-beginner: #10b981; /* Emerald - 初心者向けガイド */
  --color-cat-review: #3b82f6; /* Blue - ツール個別レビュー */
  --color-cat-workflow: #8b5cf6; /* Purple - ワークフロー自動化レシピ */
  --color-cat-comparison: #f59e0b; /* Amber - ツール比較・ランキング */

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1),
    0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1),
    0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-card-hover: 0 10px 20px rgba(0, 0, 0, 0.12),
    0 4px 8px rgba(0, 0, 0, 0.08);

  /* Spacing */
  --header-height: 56px;
  --container-max: 1280px;
  --container-padding: 16px;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans",
    "Hiragino Kaku Gothic ProN", "Noto Sans JP", YuGothic, "Yu Gothic Medium",
    Meiryo, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 0.9375rem;
  --font-size-lg: 1.0625rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 200ms ease;
  --transition-slow: 300ms ease;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;
}

/* Dark Mode Variables */
[data-theme="dark"] {
  --color-bg-primary: #0f172a;
  --color-bg-secondary: #1e293b;
  --color-bg-tertiary: #334155;
  --color-bg-card: #1e293b;
  --color-bg-header: #0f172a;

  --color-text-primary: #f1f5f9;
  --color-text-secondary: #cbd5e1;
  --color-text-muted: #64748b;
  --color-text-inverse: #0f172a;

  --color-border: #334155;
  --color-border-light: #1e293b;

  --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-card-hover: 0 10px 20px rgba(0, 0, 0, 0.4),
    0 4px 8px rgba(0, 0, 0, 0.3);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.7;
  color: var(--color-text-primary);
  background-color: var(--color-bg-secondary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--transition-normal),
    color var(--transition-normal);
}

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

a:hover {
  color: var(--color-accent-primary);
}

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

/* ================================================
   Container
   ================================================ */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* ================================================
   Header - Compact DevelopersIO Style
   ================================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background-color: var(--color-bg-header);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  transition: background-color var(--transition-normal),
    border-color var(--transition-normal);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  gap: 24px;
}

/* Logo */
.site-branding {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.site-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin: 0;
  line-height: 1;
}

.site-title a {
  display: flex;
  align-items: center;
  color: var(--color-text-primary);
}

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

.site-logo {
  height: 32px;
  width: auto;
}

/* Logo color mode switching */
.site-logo-dark {
  display: none;
}

[data-theme="dark"] .site-logo-light {
  display: none;
}

[data-theme="dark"] .site-logo-dark {
  display: block;
}

.site-description {
  display: none;
}

/* Search Bar */
.header-search {
  flex: 1;
  max-width: 400px;
  margin: 0 auto;
}

.search-form {
  display: flex;
  align-items: center;
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: 0 16px;
  height: 36px;
  transition: all var(--transition-fast);
}

.search-form:focus-within {
  border-color: var(--color-accent-primary);
  box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.1);
}

.search-form input[type="search"] {
  flex: 1;
  border: none;
  background: transparent;
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  outline: none;
  min-width: 0;
}

.search-form input[type="search"]::placeholder {
  color: var(--color-text-muted);
}

.search-form button {
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color var(--transition-fast);
}

.search-form button:hover {
  color: var(--color-accent-primary);
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: none;
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.theme-toggle:hover {
  background-color: var(--color-bg-tertiary);
  color: var(--color-accent-primary);
}

.theme-toggle .icon-sun,
[data-theme="dark"] .theme-toggle .icon-moon {
  display: none;
}

[data-theme="dark"] .theme-toggle .icon-sun {
  display: block;
}

.menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: none;
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.menu-toggle:hover {
  background-color: var(--color-bg-tertiary);
  color: var(--color-accent-primary);
}

/* ================================================
   Main Navigation - Desktop
   ================================================ */
.main-navigation {
  display: flex;
  align-items: center;
  height: 100%;
}

.mega-menu {
  display: flex;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
  height: 100%;
}

.mega-menu > .menu-item {
  position: relative;
  height: 100%;
  display: flex;
  align-items: center;
}

.mega-menu > .menu-item > a {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0 12px;
  height: 100%;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  font-weight: 500;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.mega-menu > .menu-item > a:hover,
.mega-menu > .menu-item.is-open > a {
  color: var(--color-accent-primary);
}

.mega-menu > .menu-item > a i.fa-chevron-down {
  font-size: 0.625rem;
  transition: transform var(--transition-fast);
}

.mega-menu > .menu-item.is-open > a i.fa-chevron-down {
  transform: rotate(180deg);
}

/* CTA Button in Nav */
.menu-item-cta > a {
  background-color: var(--color-accent-primary) !important;
  color: var(--color-text-inverse) !important;
  border-radius: var(--radius-md);
  padding: 8px 16px !important;
  height: auto !important;
  margin-left: 8px;
}

.menu-item-cta > a:hover {
  background-color: #0891b2 !important;
}

/* Dropdown Menu */
.mega-menu-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 280px;
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all var(--transition-normal);
  z-index: 1000;
}

.menu-item-has-children.is-open .mega-menu-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.mega-menu-inner {
  padding: 12px;
}

.mega-menu-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.mega-menu-list a {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
}

.mega-menu-list a:hover {
  background-color: var(--color-bg-secondary);
}

.mega-menu-list a i {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-bg-tertiary);
  color: var(--color-accent-primary);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  transition: all var(--transition-fast);
}

.mega-menu-list a:hover i {
  background-color: var(--color-accent-primary);
  color: var(--color-text-inverse);
}

.menu-item-content {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.menu-item-title {
  font-weight: 600;
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
  line-height: 1.4;
}

.menu-item-desc {
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
  line-height: 1.4;
}

/* Grid Layout for Tools Menu */
.mega-menu-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 4px;
}

.mega-menu-grid a {
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 16px 12px;
}

/* ================================================
   Body Offset for Fixed Header
   ================================================ */
body {
  padding-top: var(--header-height);
}

/* ================================================
   Main Content Layout
   ================================================ */
.site-content {
  min-height: calc(100vh - var(--header-height));
  padding: 24px var(--container-padding);
  max-width: var(--container-max);
  margin: 0 auto;
}

.content-area {
  width: 100%;
}

/* Hero Section */
.hero-section {
  text-align: center;
  padding: 48px 24px 56px;
  background: linear-gradient(
    135deg,
    rgba(6, 182, 212, 0.08) 0%,
    rgba(139, 92, 246, 0.08) 100%
  );
  border-radius: var(--radius-xl);
  margin-bottom: 32px;
}

.hero-section h2 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin: 0 0 12px;
  line-height: 1.4;
}

.hero-tagline {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  margin: 0;
}

@media (min-width: 768px) {
  .hero-section {
    padding: 64px 32px 72px;
  }

  .hero-section h2 {
    font-size: var(--font-size-3xl);
  }

  .hero-tagline {
    font-size: var(--font-size-lg);
  }
}

/* Default Thumbnail Placeholder */
.default-thumbnail {
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: linear-gradient(
    135deg,
    var(--color-bg-tertiary) 0%,
    var(--color-bg-secondary) 100%
  );
}

.article-thumbnail:not(:has(img)) {
  background: linear-gradient(
    135deg,
    var(--color-accent-primary) 0%,
    var(--color-accent-secondary) 100%
  );
  display: flex;
  align-items: center;
  justify-content: center;
}

.article-thumbnail:not(:has(img))::after {
  content: "N";
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-text-inverse);
  opacity: 0.5;
}

/* No Posts Message */
.no-posts {
  text-align: center;
  padding: 64px 24px;
  background-color: var(--color-bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.no-posts p {
  color: var(--color-text-secondary);
  font-size: var(--font-size-lg);
  margin: 0;
}

/* ================================================
   Article Grid - Card Layout (DevelopersIO Style)
   ================================================ */
.article-list {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: 20px;
}

@media (min-width: 640px) {
  .article-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .article-list {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1280px) {
  .article-list {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Article Card */
.article-card {
  display: flex;
  flex-direction: column;
  background-color: var(--color-bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all var(--transition-normal);
  border: none;
  padding: 0;
}

.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.article-card:last-child {
  border-bottom: none;
}

/* Card Thumbnail */
.article-thumbnail {
  position: relative;
  aspect-ratio: 1200 / 630;
  overflow: hidden;
  margin: 0;
  border-radius: 0;
}

.article-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.article-card:hover .article-thumbnail img {
  transform: scale(1.05);
}

/* Category Badge on Card */
.article-category {
  position: absolute;
  top: 12px;
  left: 12px;
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  background-color: var(--color-accent-primary);
  color: var(--color-text-inverse);
  font-size: var(--font-size-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
  border: none;
  z-index: 1;
  margin: 0;
  line-height: 1.4;
}

/* Category Color Variations (シンプル4カテゴリ) */
.article-category[data-category="beginner-guide"] {
  background-color: var(--color-cat-beginner);
}
.article-category[data-category="tool-review"] {
  background-color: var(--color-cat-review);
}
.article-category[data-category="workflow-recipe"] {
  background-color: var(--color-cat-workflow);
}
.article-category[data-category="tool-comparison"] {
  background-color: var(--color-cat-comparison);
}

/* Card Body */
.article-header {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 16px;
  margin: 0;
}

.article-title {
  font-size: var(--font-size-base);
  font-weight: 600;
  line-height: 1.5;
  margin: 0 0 auto;
  letter-spacing: -0.01em;
  color: var(--color-text-primary);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-title a {
  color: inherit;
}

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

/* Card Meta */
.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-top: 1px solid var(--color-border-light);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin: 0;
}

.article-meta time {
  display: flex;
  align-items: center;
  gap: 4px;
}

.article-meta i {
  font-size: 0.7rem;
}

/* Hide excerpt and read more on card layout */
.article-excerpt,
.read-more {
  display: none;
}

/* ================================================
   Pagination
   ================================================ */
.pagination,
.nav-links {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-top: 40px;
  padding: 20px 0;
}

.pagination a,
.pagination span,
.nav-links a,
.nav-links span {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 12px;
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: all var(--transition-fast);
}

.pagination a:hover,
.nav-links a:hover {
  background-color: var(--color-accent-primary);
  border-color: var(--color-accent-primary);
  color: var(--color-text-inverse);
}

.pagination .current,
.nav-links .current {
  background-color: var(--color-accent-primary);
  border-color: var(--color-accent-primary);
  color: var(--color-text-inverse);
}

/* ================================================
   Single Post & Page Styles
   ================================================ */
.single-content {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 40px;
  max-width: 1100px;
}

.single-content .content-area {
  min-width: 0; /* Prevent grid blowout */
}

.single-content .sidebar {
  position: sticky;
  top: calc(var(--header-height) + 24px);
  height: fit-content;
}

@media (max-width: 1024px) {
  .single-content {
    grid-template-columns: 1fr;
  }

  .single-content .sidebar {
    display: none;
  }
}

/* Page Content Wrapper (no sidebar) */
.page-content-wrapper {
  max-width: 800px;
}

.page-header {
  margin-bottom: 24px;
}

.page-title,
h1.article-title {
  font-size: var(--font-size-2xl);
  line-height: 1.4;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
}

.article-content,
.page-content {
  background-color: var(--color-bg-card);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-card);
  overflow-wrap: break-word;
  word-break: break-word;
}

.article-content > *:first-child,
.page-content > *:first-child {
  margin-top: 0;
}

.article-content h2,
.page-content h2 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-top: 48px;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-accent-primary);
  color: var(--color-text-primary);
}

.article-content h3,
.page-content h3 {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-top: 36px;
  margin-bottom: 16px;
  color: var(--color-text-primary);
}

.article-content p,
.page-content p {
  margin-bottom: 20px;
  color: var(--color-text-secondary);
}

.article-content ul,
.page-content ul,
.article-content ol,
.page-content ol {
  margin-bottom: 20px;
  padding-left: 24px;
}

.article-content li,
.page-content li {
  margin-bottom: 8px;
  color: var(--color-text-secondary);
}

.article-content a,
.page-content a {
  color: var(--color-accent-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.article-content a:hover,
.page-content a:hover {
  color: #0891b2;
}

/* Code Blocks */
.article-content pre,
.page-content pre {
  background-color: var(--color-bg-tertiary);
  border-radius: var(--radius-md);
  padding: 16px;
  overflow-x: auto;
  margin-bottom: 20px;
}

.article-content code,
.page-content code {
  font-family: "SF Mono", "Monaco", "Inconsolata", "Fira Code", monospace;
  font-size: var(--font-size-sm);
}

/* ================================================
   Sidebar
   ================================================ */
.sidebar {
  position: sticky;
  top: calc(var(--header-height) + 24px);
  height: fit-content;
  max-height: calc(100vh - var(--header-height) - 48px);
  overflow-y: auto;
}

.widget {
  background-color: var(--color-bg-card);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-card);
}

.widget-title {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

/* Table of Contents */
.toc-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.toc-item {
  margin-bottom: 8px;
}

.toc-item.toc-h3 {
  padding-left: 16px;
}

.toc-link {
  display: block;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.5;
  padding: 4px 0;
  transition: color var(--transition-fast);
}

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

/* Sidebar Toggle (Mobile) */
.sidebar-toggle {
  display: none;
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 999;
  width: 56px;
  height: 56px;
  background-color: var(--color-accent-primary);
  color: var(--color-text-inverse);
  border: none;
  border-radius: 50%;
  box-shadow: var(--shadow-lg);
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  transition: all var(--transition-fast);
}

.sidebar-toggle:hover {
  background-color: #0891b2;
  transform: scale(1.05);
}

.sidebar-toggle i {
  font-size: 1.25rem;
}

.sidebar-toggle span {
  font-size: 0.625rem;
  font-weight: 600;
}

/* ================================================
   Breadcrumb
   ================================================ */
.breadcrumb {
  margin-bottom: 20px;
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  list-style: none;
  padding: 0;
  margin: 0;
  gap: 8px;
  font-size: var(--font-size-xs);
}

.breadcrumb-item {
  display: flex;
  align-items: center;
  color: var(--color-text-muted);
}

.breadcrumb-item:not(:last-child)::after {
  content: "›";
  margin-left: 8px;
  color: var(--color-text-muted);
}

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

.breadcrumb-item a:hover {
  color: var(--color-accent-primary);
}

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

/* ================================================
   Archive Header
   ================================================ */
.archive-header {
  margin-bottom: 32px;
  padding: 24px;
  background-color: var(--color-bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.archive-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 8px;
}

.archive-description {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: 0;
}

/* ================================================
   Footer - DevelopersIO Style
   ================================================ */
.site-footer {
  background-color: var(--color-bg-primary);
  border-top: 1px solid var(--color-border);
  padding: 48px 0 32px;
  margin-top: 48px;
}

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

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand {
  max-width: 300px;
}

.footer-logo {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 12px;
}

.footer-tagline {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.footer-nav-title {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 16px;
}

.footer-nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-nav-list li {
  margin-bottom: 10px;
}

.footer-nav-list a {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.footer-nav-list a:hover {
  color: var(--color-accent-primary);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}

.social-links {
  display: flex;
  gap: 12px;
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.social-links a:hover {
  background-color: var(--color-accent-primary);
  color: var(--color-text-inverse);
}

.copyright {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.copyright p {
  margin: 0;
}

/* Legacy footer support */
.footer-navigation {
  margin-bottom: 24px;
}

.footer-navigation ul {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 24px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-navigation a {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.footer-navigation a:hover {
  color: var(--color-accent-primary);
}

/* Hide author/ranking sections in new design */
.author-section,
.ranking-section {
  display: none;
}

/* ================================================
   Mobile Navigation
   ================================================ */
.mobile-navigation {
  position: fixed;
  top: 0;
  left: -100%;
  width: 100%;
  max-width: 320px;
  height: 100vh;
  background-color: var(--color-bg-card);
  box-shadow: var(--shadow-xl);
  z-index: 1001;
  transition: left var(--transition-slow);
  overflow-y: auto;
}

.mobile-navigation.is-open {
  left: 0;
}

.mobile-menu-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-bg-secondary);
}

.mobile-menu-title {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-text-primary);
}

.mobile-menu-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  color: var(--color-text-secondary);
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.mobile-menu-close:hover {
  background-color: var(--color-bg-tertiary);
  color: var(--color-accent-primary);
}

.mobile-menu-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.mobile-menu-list > li {
  border-bottom: 1px solid var(--color-border-light);
}

.mobile-menu-list > li > a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  color: var(--color-text-primary);
  font-size: var(--font-size-base);
  font-weight: 500;
  transition: background-color var(--transition-fast);
}

.mobile-menu-list > li > a:hover {
  background-color: var(--color-bg-secondary);
}

.mobile-menu-list > li > a i {
  width: 20px;
  color: var(--color-accent-primary);
  text-align: center;
}

/* Mobile Submenu */
.mobile-submenu-toggle {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: 14px 20px;
  background: none;
  border: none;
  color: var(--color-text-primary);
  font-size: var(--font-size-base);
  font-weight: 500;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.mobile-submenu-toggle:hover {
  background-color: var(--color-bg-secondary);
}

.mobile-submenu-toggle span {
  display: flex;
  align-items: center;
  gap: 12px;
}

.mobile-submenu-toggle span i {
  width: 20px;
  color: var(--color-accent-primary);
  text-align: center;
}

.mobile-submenu-toggle .toggle-icon {
  color: var(--color-text-muted);
  font-size: 0.75rem;
  transition: transform var(--transition-fast);
}

.mobile-menu-parent.is-open .toggle-icon {
  transform: rotate(180deg);
}

.mobile-submenu {
  list-style: none;
  margin: 0;
  padding: 0;
  max-height: 0;
  overflow: hidden;
  background-color: var(--color-bg-secondary);
  transition: max-height var(--transition-slow);
}

.mobile-menu-parent.is-open .mobile-submenu {
  max-height: 500px;
}

.mobile-submenu li a {
  display: block;
  padding: 12px 20px 12px 52px;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  transition: all var(--transition-fast);
}

.mobile-submenu li a:hover {
  color: var(--color-accent-primary);
  background-color: var(--color-bg-tertiary);
}

/* Mobile CTA */
.mobile-menu-cta {
  padding: 20px;
  background-color: var(--color-bg-secondary);
}

.mobile-menu-cta a {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  background-color: var(--color-accent-primary);
  color: var(--color-text-inverse) !important;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: var(--font-size-sm);
  transition: background-color var(--transition-fast);
}

.mobile-menu-cta a:hover {
  background-color: #0891b2;
}

/* Mobile Menu Overlay */
.mobile-menu-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-slow);
}

.mobile-menu-overlay.is-active {
  opacity: 1;
  visibility: visible;
}

/* ================================================
   Tables
   ================================================ */
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  background-color: var(--color-bg-card);
  font-size: var(--font-size-sm);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  white-space: nowrap !important;
}

.article-content table th,
.article-content table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.article-content table th {
  background-color: var(--color-bg-secondary);
  font-weight: 600;
  color: var(--color-text-primary);
}

.article-content table tbody tr:hover {
  background-color: var(--color-bg-secondary);
}

.table-wrapper {
  width: 100%;
  overflow-x: auto;
  margin: 24px 0;
  -webkit-overflow-scrolling: touch;
}

/* ================================================
   Related Posts
   ================================================ */
.related-posts {
  margin-top: 56px;
  padding-top: 40px;
  border-top: 1px solid var(--color-border);
}

.related-posts-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.related-posts-title::before {
  content: '';
  width: 4px;
  height: 24px;
  background: linear-gradient(
    180deg,
    var(--color-accent-primary),
    var(--color-accent-secondary)
  );
  border-radius: 2px;
}

.related-posts-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.related-post-card {
  display: flex;
  flex-direction: column;
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all var(--transition-normal);
  text-decoration: none;
}

.related-post-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--color-accent-primary);
}

.related-post-card > img,
.related-post-card > .related-post-image-placeholder {
  overflow: hidden;
}

.related-post-image {
  width: 100%;
  height: 140px;
  object-fit: cover;
  transition: transform var(--transition-normal);
  display: block;
}

.related-post-card:hover .related-post-image {
  transform: scale(1.05);
}

.related-post-content {
  padding: 16px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.related-post-title {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text-primary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin: 0;
  transition: color var(--transition-fast);
}

.related-post-card:hover .related-post-title {
  color: var(--color-accent-primary);
}

.related-post-excerpt {
  display: none;
}

/* ================================================
   Single Post Specific Styles
   ================================================ */
.article-header-single {
  margin-bottom: 24px;
}

.article-header-single .article-category {
  position: static;
  display: inline-flex;
  margin-bottom: 16px;
}

.article-meta-single {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-top: 12px;
}

.article-meta-single time,
.article-meta-single .updated {
  display: flex;
  align-items: center;
  gap: 6px;
}

.article-thumbnail-single {
  margin-bottom: 32px;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.article-thumbnail-single img {
  width: 100%;
  height: auto;
}

.article-footer {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 24px;
}

.article-tags i {
  color: var(--color-text-muted);
}

.tag-link {
  display: inline-block;
  padding: 4px 12px;
  background-color: var(--color-bg-secondary);
  color: var(--color-text-secondary);
  font-size: var(--font-size-xs);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.tag-link:hover {
  background-color: var(--color-accent-primary);
  color: var(--color-text-inverse);
}

.related-post-image-placeholder {
  width: 100%;
  height: 140px;
  background: linear-gradient(
    135deg,
    var(--color-accent-primary),
    var(--color-accent-secondary)
  );
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.related-post-image-placeholder::after {
  content: '\f03e';
  font-family: 'Font Awesome 6 Free';
  font-weight: 400;
  font-size: 32px;
  color: rgba(255, 255, 255, 0.5);
}

/* ================================================
   CTA Section
   ================================================ */
.cta-section {
  background: linear-gradient(
    135deg,
    rgba(6, 182, 212, 0.1),
    rgba(139, 92, 246, 0.1)
  );
  padding: 32px;
  margin-top: 32px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  text-align: center;
}

.cta-section h3 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 8px;
  margin-top: 0;
}

.cta-section p {
  color: var(--color-text-secondary);
  margin-bottom: 20px;
}

.cta-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.cta-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: var(--font-size-sm);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.cta-button-primary {
  background-color: var(--color-accent-primary);
  color: var(--color-text-inverse);
}

.cta-button-primary:hover {
  background-color: #0891b2;
  color: var(--color-text-inverse);
  transform: translateY(-2px);
}

.cta-button-secondary {
  background-color: var(--color-bg-card);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

.cta-button-secondary:hover {
  border-color: var(--color-accent-primary);
  color: var(--color-accent-primary);
}

/* ================================================
   Post Navigation
   ================================================ */
.post-navigation {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  gap: 20px;
}

.nav-previous a,
.nav-next a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-accent-primary);
  font-weight: 600;
  font-size: var(--font-size-sm);
}

.nav-previous a:hover,
.nav-next a:hover {
  color: #0891b2;
}

/* ================================================
   Affiliate Banner
   ================================================ */
.affiliate-banner img {
  display: block;
  margin: 0 auto;
  border-radius: var(--radius-md);
}

/* ================================================
   Responsive Design
   ================================================ */
@media (max-width: 1024px) {
  .main-navigation {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .header-search {
    display: none;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .related-posts-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 52px;
    --container-padding: 16px;
  }

  .header-actions {
    gap: 4px;
  }

  .theme-toggle,
  .menu-toggle {
    width: 32px;
    height: 32px;
  }

  .site-logo {
    height: 28px;
  }

  .hero-section {
    padding: 20px 0 28px;
  }

  .hero-section h2 {
    font-size: var(--font-size-xl);
  }

  .article-list {
    gap: 16px;
  }

  .article-card {
    border-radius: var(--radius-md);
  }

  .article-header {
    padding: 12px;
  }

  .article-title {
    font-size: var(--font-size-sm);
  }

  .article-meta {
    padding: 10px 12px;
  }

  /* Sidebar Mobile */
  .sidebar,
  .single-content .sidebar {
    display: block;
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    max-width: 320px;
    height: 100vh;
    background-color: var(--color-bg-card);
    box-shadow: var(--shadow-xl);
    padding: 60px 20px 20px;
    overflow-y: auto;
    transition: right var(--transition-slow);
    z-index: 998;
    max-height: none;
  }

  .sidebar.is-open,
  .single-content .sidebar.is-open {
    right: 0;
  }

  body.single .sidebar-toggle {
    display: flex;
  }

  /* Footer Mobile */
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .related-posts-list {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .related-post-image,
  .related-post-image-placeholder {
    height: 180px;
  }

  .related-posts-title {
    font-size: var(--font-size-lg);
  }

  .article-content,
  .page-content {
    padding: 20px;
  }

  .article-content table {
    white-space: nowrap !important;
  }

  h1.article-title,
  .page-title {
    font-size: var(--font-size-xl);
  }
}

@media (max-width: 480px) {
  .mobile-navigation {
    max-width: 100%;
  }

  .article-category {
    font-size: 0.65rem;
    padding: 3px 8px;
  }

  .article-content table {
    white-space: nowrap !important;
  }
}

/* ================================================
   Print Styles
   ================================================ */
@media print {
  .site-header,
  .sidebar,
  .sidebar-toggle,
  .mobile-navigation,
  .mobile-menu-overlay,
  .footer-navigation,
  .social-links {
    display: none !important;
  }

  body {
    padding-top: 0;
    background: white;
    color: black;
  }

  .article-content,
  .page-content {
    box-shadow: none;
    padding: 0;
  }
}

/* ================================================
   Profile Page Styles
   ================================================ */
.profile-page {
  max-width: 800px;
  margin: 0 auto;
}

.profile-content {
  background-color: var(--color-bg-card);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-card);
}

.profile-header {
  display: flex;
  align-items: center;
  gap: 32px;
  margin-bottom: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--color-border);
}

.profile-avatar {
  flex-shrink: 0;
}

.profile-avatar .avatar-image {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--color-accent-primary);
}

.profile-avatar .avatar-placeholder {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: linear-gradient(
    135deg,
    var(--color-accent-primary),
    var(--color-accent-secondary)
  );
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-inverse);
  font-size: 3rem;
}

.profile-intro {
  flex: 1;
}

.profile-name {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin: 0 0 8px;
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}

.profile-name-en {
  font-size: var(--font-size-base);
  font-weight: 400;
  color: var(--color-text-muted);
}

.profile-title {
  font-size: var(--font-size-lg);
  color: var(--color-accent-primary);
  font-weight: 600;
  margin: 0 0 8px;
}

.profile-tagline {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  margin: 0;
}

.profile-section {
  margin-bottom: 40px;
}

.profile-section h3 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin: 0 0 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.profile-section h3 i {
  color: var(--color-accent-primary);
}

.profile-section p {
  margin-bottom: 16px;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.career-list,
.values-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.career-list li,
.values-list li {
  position: relative;
  padding-left: 24px;
  margin-bottom: 12px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.career-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  background-color: var(--color-accent-primary);
  border-radius: 50%;
}

.values-list li::before {
  content: "\f005";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  position: absolute;
  left: 0;
  top: 0;
  color: var(--color-accent-tertiary);
  font-size: var(--font-size-sm);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.skill-category h4 {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text-primary);
  margin: 0 0 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.skill-category h4 i {
  color: var(--color-accent-secondary);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.skill-tag {
  display: inline-block;
  padding: 6px 14px;
  background-color: var(--color-bg-secondary);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.skill-tag:hover {
  background-color: var(--color-accent-primary);
  color: var(--color-text-inverse);
}

.blog-mission ul {
  list-style: none;
  padding: 0;
  margin: 20px 0 0;
}

.blog-mission ul li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  color: var(--color-text-secondary);
}

.blog-mission ul li i {
  color: var(--color-accent-primary);
  font-size: var(--font-size-lg);
}

.profile-cta {
  background: linear-gradient(
    135deg,
    rgba(6, 182, 212, 0.1),
    rgba(139, 92, 246, 0.1)
  );
  padding: 32px;
  border-radius: var(--radius-lg);
  text-align: center;
  margin-top: 40px;
}

.profile-cta h3 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin: 0 0 12px;
}

.profile-cta p {
  color: var(--color-text-secondary);
  margin: 0 0 20px;
}

@media (max-width: 768px) {
  .profile-content {
    padding: 24px;
  }

  .profile-header {
    flex-direction: column;
    text-align: center;
    gap: 20px;
  }

  .profile-name {
    justify-content: center;
    flex-direction: column;
    gap: 4px;
  }

  .skills-grid {
    grid-template-columns: 1fr;
  }

  .profile-avatar .avatar-image,
  .profile-avatar .avatar-placeholder {
    width: 100px;
    height: 100px;
  }
}

/* ================================================
   Tools Page Styles
   ================================================ */

/* Utility Classes */
.sp-only {
  display: none;
}

@media (max-width: 768px) {
  .sp-only {
    display: inline;
  }
}

/* Button System */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: var(--font-size-sm);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
}

.btn-primary {
  background-color: var(--color-accent-primary);
  color: var(--color-text-inverse);
}

.btn-primary:hover {
  background-color: #0891b2;
  color: var(--color-text-inverse);
  transform: translateY(-2px);
}

.btn-secondary {
  background-color: var(--color-bg-card);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  border-color: var(--color-accent-primary);
  color: var(--color-accent-primary);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

.btn-outline:hover {
  border-color: var(--color-accent-primary);
  color: var(--color-accent-primary);
}

.btn-sm {
  padding: 8px 16px;
  font-size: var(--font-size-xs);
}

.btn-lg {
  padding: 16px 32px;
  font-size: var(--font-size-base);
}

/* Section Common Styles */
.section-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-text-primary);
  text-align: center;
  margin: 0 0 16px;
}

.section-lead {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  text-align: center;
  margin: 0 0 32px;
}

/* Tools Page Container */
.tools-page {
  padding: 0;
}

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

.tools-page section {
  padding: 64px 0;
}

/* ① Hero Section */
.tools-hero {
  background: linear-gradient(
    135deg,
    rgba(6, 182, 212, 0.1) 0%,
    rgba(139, 92, 246, 0.1) 50%,
    rgba(16, 185, 129, 0.1) 100%
  );
  text-align: center;
  padding: 80px 0 !important;
}

.tools-hero-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin: 0 0 16px;
  line-height: 1.4;
}

.tools-hero-lead {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  margin: 0 0 24px;
  line-height: 1.7;
}

.tools-hero-lead strong {
  color: var(--color-accent-primary);
}

.tools-hero-criteria {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 32px;
}

.criteria-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background-color: var(--color-bg-card);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  box-shadow: var(--shadow-sm);
}

.criteria-item i {
  color: var(--color-accent-success);
}

.tools-hero-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ② Purpose Navigation */
.tools-purpose-nav {
  background-color: var(--color-bg-primary);
}

.purpose-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.purpose-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 24px;
  background-color: var(--color-bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  text-decoration: none;
  transition: all var(--transition-normal);
}

.purpose-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.purpose-icon {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary));
  border-radius: var(--radius-md);
  font-size: 1.5rem;
  color: var(--color-text-inverse);
}

.purpose-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

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

.purpose-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* ③ Editors Pick */
.tools-editors-pick {
  background-color: var(--color-bg-secondary);
}

.editors-pick-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.pick-card {
  display: flex;
  flex-direction: column;
  padding: 24px;
  background-color: var(--color-bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  position: relative;
  transition: all var(--transition-normal);
}

.pick-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.pick-card-featured {
  border: 2px solid var(--color-accent-primary);
}

.pick-badge {
  position: absolute;
  top: -10px;
  left: 20px;
  padding: 4px 12px;
  background-color: var(--color-accent-primary);
  color: var(--color-text-inverse);
  font-size: var(--font-size-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
}

.pick-badge.badge-green {
  background-color: var(--color-accent-success);
}

.pick-badge.badge-blue {
  background-color: var(--color-accent-info);
}

.pick-badge.badge-purple {
  background-color: var(--color-accent-secondary);
}

.pick-header {
  margin-top: 12px;
  margin-bottom: 16px;
}

.pick-name {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-text-primary);
  margin: 0 0 8px;
}

.pick-catch {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: 0;
  line-height: 1.5;
}

.pick-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.pick-tags .tag {
  padding: 4px 10px;
  background-color: var(--color-bg-secondary);
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
  border-radius: var(--radius-full);
}

.pick-actions {
  display: flex;
  gap: 8px;
  margin-top: auto;
}

.pick-actions .btn {
  flex: 1;
}

/* ④ Category Section */
.tools-category-section {
  background-color: var(--color-bg-primary);
}

.category-block {
  padding: 40px;
  background-color: var(--color-bg-card);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-card);
  margin-bottom: 32px;
}

.category-block:last-child {
  margin-bottom: 0;
}

.category-header {
  margin-bottom: 24px;
}

.category-title {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin: 0 0 8px;
}

.category-title i {
  color: var(--color-accent-primary);
}

.category-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: 0;
}

.category-tips {
  padding: 20px;
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-md);
  margin-bottom: 24px;
}

.category-tips h4 {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-primary);
  margin: 0 0 12px;
}

.category-tips ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.category-tips ul li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 8px;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.category-tips ul li:last-child {
  margin-bottom: 0;
}

.category-tips ul li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--color-accent-primary);
}

.tool-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 24px;
}

.tool-card {
  padding: 20px;
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.tool-card:hover {
  background-color: var(--color-bg-tertiary);
}

.tool-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 12px;
}

.tool-name {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-text-primary);
  margin: 0;
}

.tool-price {
  font-size: var(--font-size-xs);
  color: var(--color-accent-primary);
  font-weight: 600;
}

.tool-target {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: 0 0 8px;
}

.tool-merit {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: 0 0 16px;
}

.tool-merit i {
  color: var(--color-accent-tertiary);
  margin-right: 4px;
}

.tool-actions {
  display: flex;
  gap: 8px;
}

.tool-actions .btn {
  flex: 1;
}

.category-more {
  text-align: center;
}

.category-more a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-accent-primary);
  font-weight: 600;
  font-size: var(--font-size-sm);
}

.category-more a:hover {
  color: #0891b2;
}

/* ⑤ Starter Packs */
.tools-starter-packs {
  background-color: var(--color-bg-secondary);
}

.starter-pack-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.starter-pack-card {
  padding: 32px;
  background-color: var(--color-bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  text-align: center;
  transition: all var(--transition-normal);
}

.starter-pack-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.pack-header {
  margin-bottom: 24px;
}

.pack-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-text-primary);
  margin: 0 0 8px;
}

.pack-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: 0;
}

.pack-tools {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.pack-tool {
  padding: 8px 16px;
  background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary));
  color: var(--color-text-inverse);
  font-size: var(--font-size-sm);
  font-weight: 600;
  border-radius: var(--radius-full);
}

.pack-arrow {
  color: var(--color-text-muted);
  font-weight: 700;
}

.pack-flow {
  padding: 16px;
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  text-align: left;
}

.pack-flow p {
  margin: 0;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.pack-flow p strong {
  color: var(--color-text-primary);
}

/* ⑥ Comparison Table */
.tools-comparison-table {
  background-color: var(--color-bg-primary);
}

.comparison-table-wrapper {
  overflow-x: auto;
  margin-bottom: 24px;
  -webkit-overflow-scrolling: touch;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  background-color: var(--color-bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  min-width: 700px;
}

.comparison-table th,
.comparison-table td {
  padding: 16px 20px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.comparison-table th {
  background-color: var(--color-bg-secondary);
  font-weight: 600;
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  white-space: nowrap;
}

.comparison-table td {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.comparison-table tbody tr:hover {
  background-color: var(--color-bg-secondary);
}

.comparison-table tbody tr:last-child td {
  border-bottom: none;
}

.comparison-more {
  text-align: center;
}

/* ⑦ Review Policy */
.tools-review-policy {
  background-color: var(--color-bg-secondary);
}

.policy-content {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 24px;
}

.policy-item {
  padding: 24px;
  background-color: var(--color-bg-card);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.policy-item h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text-primary);
  margin: 0 0 12px;
}

.policy-item h3 i {
  color: var(--color-accent-success);
}

.policy-item p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: 0;
  line-height: 1.7;
}

.policy-notice {
  padding: 16px 20px;
  background-color: var(--color-bg-card);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--color-accent-info);
}

.policy-notice p {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: 0;
}

.policy-notice p i {
  color: var(--color-accent-info);
  margin-top: 2px;
}

/* ⑧ FAQ */
.tools-faq {
  background-color: var(--color-bg-primary);
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  margin-bottom: 12px;
  background-color: var(--color-bg-card);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text-primary);
  cursor: pointer;
  list-style: none;
  transition: background-color var(--transition-fast);
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-question::after {
  content: "\f078";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  transition: transform var(--transition-fast);
}

.faq-item[open] .faq-question::after {
  transform: rotate(180deg);
}

.faq-question:hover {
  background-color: var(--color-bg-secondary);
}

.faq-answer {
  padding: 0 24px 20px;
}

.faq-answer p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin: 0;
}

/* ⑨ CTA Section */
.tools-cta {
  background: linear-gradient(
    135deg,
    rgba(6, 182, 212, 0.15) 0%,
    rgba(139, 92, 246, 0.15) 100%
  );
}

.cta-content {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.cta-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin: 0 0 16px;
}

.cta-text {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  margin: 0 0 24px;
}

.cta-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
}

/* Tools Page Responsive */
@media (max-width: 1024px) {
  .purpose-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .editors-pick-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .tool-cards {
    grid-template-columns: repeat(2, 1fr);
  }

  .starter-pack-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .tools-page section {
    padding: 48px 0;
  }

  .tools-hero {
    padding: 48px 0 !important;
  }

  .tools-hero-title {
    font-size: var(--font-size-2xl);
  }

  .tools-hero-lead {
    font-size: var(--font-size-base);
  }

  .tools-hero-criteria {
    flex-direction: column;
    align-items: center;
    gap: 8px;
  }

  .tools-hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .tools-hero-actions .btn {
    width: 100%;
    max-width: 280px;
  }

  .section-title {
    font-size: var(--font-size-xl);
  }

  .purpose-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .purpose-card {
    padding: 16px;
  }

  .purpose-icon {
    width: 48px;
    height: 48px;
    font-size: 1.25rem;
  }

  .editors-pick-grid {
    grid-template-columns: 1fr;
  }

  .category-block {
    padding: 24px;
  }

  .tool-cards {
    grid-template-columns: 1fr;
  }

  .starter-pack-grid {
    grid-template-columns: 1fr;
  }

  .starter-pack-card {
    padding: 24px;
  }

  .pack-tools {
    flex-direction: column;
  }

  .pack-arrow {
    transform: rotate(90deg);
  }

  .policy-content {
    grid-template-columns: 1fr;
  }

  .cta-title {
    font-size: var(--font-size-xl);
  }
}