/* Tech Theme - Complete Design System */

/* Pretendard Font Face */
@font-face {
  font-family: 'Pretendard';
  font-weight: 100;
  font-style: normal;
  src: url('/static/fonts/Pretendard-Thin.otf') format('opentype'),
       url('/static/fonts/Pretendard-Thin.otf') format('truetype');
  font-display: swap;
}

@font-face {
  font-family: 'Pretendard';
  font-weight: 200;
  font-style: normal;
  src: url('/static/fonts/Pretendard-ExtraLight.otf') format('opentype');
  font-display: swap;
}

@font-face {
  font-family: 'Pretendard';
  font-weight: 300;
  font-style: normal;
  src: url('/static/fonts/Pretendard-Light.otf') format('opentype');
  font-display: swap;
}

@font-face {
  font-family: 'Pretendard';
  font-weight: 400;
  font-style: normal;
  src: url('/static/fonts/Pretendard-Regular.otf') format('opentype');
  font-display: swap;
}

@font-face {
  font-family: 'Pretendard';
  font-weight: 500;
  font-style: normal;
  src: url('/static/fonts/Pretendard-Medium.otf') format('opentype');
  font-display: swap;
}

@font-face {
  font-family: 'Pretendard';
  font-weight: 600;
  font-style: normal;
  src: url('/static/fonts/Pretendard-SemiBold.otf') format('opentype');
  font-display: swap;
}

@font-face {
  font-family: 'Pretendard';
  font-weight: 700;
  font-style: normal;
  src: url('/static/fonts/Pretendard-Bold.otf') format('opentype');
  font-display: swap;
}

@font-face {
  font-family: 'Pretendard';
  font-weight: 800;
  font-style: normal;
  src: url('/static/fonts/Pretendard-ExtraBold.otf') format('opentype');
  font-display: swap;
}

@font-face {
  font-family: 'Pretendard';
  font-weight: 900;
  font-style: normal;
  src: url('/static/fonts/Pretendard-Black.otf') format('opentype');
  font-display: swap;
}

/* variables.css */
/* Design System Variables - Framer/Vercel/Linear Style */

:root {
  /* Spacing Scale (4/8/12/16/24/32) */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;

  /* Type Scale */
  --font-sans: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', 'Courier New', monospace;

  /* Font Sizes */
  --text-xs: 12px;
  --text-sm: 14px;
  --text-base: 16px;
  --text-lg: 18px;
  --text-xl: 20px;
  --text-2xl: 24px;
  --text-3xl: 30px;
  --text-4xl: 36px;
  --text-5xl: 48px;
  --text-6xl: 60px;

  /* Line Heights */
  --leading-none: 1;
  --leading-tight: 1.25;
  --leading-snug: 1.375;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;
  --leading-loose: 2;

  /* Font Weights */
  --weight-normal: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;

  /* Colors - Neutral Palette */
  --color-white: #ffffff;
  --color-gray-50: #fafafa;
  --color-gray-100: #f5f5f5;
  --color-gray-200: #e5e5e5;
  --color-gray-300: #d4d4d4;
  --color-gray-400: #a3a3a3;
  --color-gray-500: #737373;
  --color-gray-600: #525252;
  --color-gray-700: #404040;
  --color-gray-800: #262626;
  --color-gray-900: #171717;
  --color-black: #0a0a0a;

  /* Semantic Colors */
  --color-bg: var(--color-white);
  --color-bg-subtle: var(--color-gray-50);
  --color-bg-muted: var(--color-gray-100);
  --color-border: var(--color-gray-200);
  --color-border-subtle: var(--color-gray-100);
  --color-text: var(--color-gray-900);
  --color-text-secondary: var(--color-gray-600);
  --color-text-muted: var(--color-gray-500);
  --color-text-inverse: var(--color-white);

  /* Accent Colors (will be overridden by theme.css) */
  --color-accent: #fd7901;
  --color-accent-hover: #e66a00;
  --color-accent-light: #fff4e6;
  --color-accent-dark: #cc5f00;

  /* Shadows */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 12px;
  --radius-2xl: 16px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Z-Index Scale */
  --z-base: 0;
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;

  /* Container */
  --container-max-width: 1200px;
  --container-padding: var(--space-4);
}

/* Responsive Breakpoints */
@media (min-width: 640px) {
  :root {
    --container-padding: var(--space-6);
  }
}

@media (min-width: 1024px) {
  :root {
    --container-padding: var(--space-8);
  }
}


/* base.css */
/* Base Styles - Reset + Typography */

/* Modern CSS Reset */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
}

body {
  font-family: 'Pretendard', var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

*:not(code):not(pre):not(kbd):not(samp) {
  font-family: 'Pretendard', var(--font-sans);
}

/* Typography Scale */
h1, .h1 {
  font-size: var(--text-5xl);
  line-height: var(--leading-tight);
  font-weight: var(--weight-bold);
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin-bottom: var(--space-6);
}

h2, .h2 {
  font-size: var(--text-4xl);
  line-height: var(--leading-tight);
  font-weight: var(--weight-bold);
  letter-spacing: -0.01em;
  color: var(--color-text);
  margin-bottom: var(--space-5);
}

h3, .h3 {
  font-size: var(--text-3xl);
  line-height: var(--leading-snug);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

h4, .h4 {
  font-size: var(--text-2xl);
  line-height: var(--leading-snug);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

h5, .h5 {
  font-size: var(--text-xl);
  line-height: var(--leading-normal);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

h6, .h6 {
  font-size: var(--text-lg);
  line-height: var(--leading-normal);
  font-weight: var(--weight-medium);
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

p {
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
}

/* Links */
a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

/* Lists */
ul, ol {
  margin-bottom: var(--space-4);
  padding-left: var(--space-6);
}

li {
  margin-bottom: var(--space-2);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
}

/* Code */
code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background-color: var(--color-bg-muted);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  color: var(--color-text);
}

pre {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  background-color: var(--color-gray-900);
  color: var(--color-gray-100);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  overflow-x: auto;
  margin-bottom: var(--space-4);
}

pre code {
  background: none;
  padding: 0;
  color: inherit;
}

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

/* Horizontal Rule */
hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--space-8) 0;
}

/* Selection */
::selection {
  background-color: var(--color-accent-light);
  color: var(--color-text);
}

/* Focus Styles */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Responsive Typography */
@media (max-width: 768px) {
  h1, .h1 {
    font-size: var(--text-4xl);
  }

  h2, .h2 {
    font-size: var(--text-3xl);
  }

  h3, .h3 {
    font-size: var(--text-2xl);
  }

  h4, .h4 {
    font-size: var(--text-xl);
  }
}


/* layout.css */
/* Layout System - Grid, Container, Sections */

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

/* Grid System */
.grid {
  display: grid;
  gap: var(--space-6);
}

.grid-cols-1 {
  grid-template-columns: repeat(1, minmax(0, 1fr));
}

.grid-cols-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-cols-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

@media (min-width: 768px) {
  .grid-cols-md-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid-cols-md-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .grid-cols-lg-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid-cols-lg-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* Flexbox Utilities */
.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.items-center {
  align-items: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-2 {
  gap: var(--space-2);
}

.gap-4 {
  gap: var(--space-4);
}

.gap-6 {
  gap: var(--space-6);
}

/* Spacing Utilities */
.mt-4 {
  margin-top: var(--space-4);
}

.mt-6 {
  margin-top: var(--space-6);
}

.mt-8 {
  margin-top: var(--space-8);
}

.mb-4 {
  margin-bottom: var(--space-4);
}

.mb-6 {
  margin-bottom: var(--space-6);
}

.mb-8 {
  margin-bottom: var(--space-8);
}

.py-4 {
  padding-top: var(--space-4);
  padding-bottom: var(--space-4);
}

.py-6 {
  padding-top: var(--space-6);
  padding-bottom: var(--space-6);
}

.py-8 {
  padding-top: var(--space-8);
  padding-bottom: var(--space-8);
}

/* Sections */
section {
  padding: var(--space-16) 0;
}

@media (max-width: 768px) {
  section {
    padding: var(--space-10) 0;
  }
}

/* Main Layout */
main {
  min-height: calc(100vh - 200px);
  padding: var(--space-8) 0;
}

@media (max-width: 768px) {
  main {
    padding: var(--space-6) 0;
  }
}

/* Two Column Layout (Content + Sidebar) */
.layout-two-column {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: var(--space-8);
  align-items: start;
}

@media (max-width: 1024px) {
  .layout-two-column {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
}


/* components.css */
/* Component Styles - Modern SaaS Design System */

/* Skip Link (Accessibility) */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-accent);
  color: var(--color-text-inverse);
  padding: var(--space-2) var(--space-4);
  text-decoration: none;
  z-index: var(--z-tooltip);
  border-radius: var(--radius-md);
  font-weight: var(--weight-medium);
}

.skip-link:focus {
  top: var(--space-2);
}

/* Header - Modern SaaS Style */
.site-header {
  background-color: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  transition: all var(--transition-base);
}

.site-header .container {
  padding-top: var(--space-4);
  padding-bottom: var(--space-4);
}

.header-content {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.header-brand {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  flex-shrink: 0;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  transition: opacity var(--transition-fast);
}

.brand-link:hover {
  opacity: 0.8;
}

.brand-logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.logo-image {
  height: 80px;
  width: auto;
  max-width: 320px;
  object-fit: contain;
  transition: transform var(--transition-fast);
}

.brand-link:hover .logo-image {
  transform: scale(1.05);
}

.brand-text {
  display: none; /* 텍스트 숨김 */
}

.brand-title {
  display: none;
}

.brand-subtitle {
  display: none;
}

/* Search Bar */
.header-search {
  flex: 1;
  min-width: 0;
}

.search-form {
  width: 100%;
}

.search-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  width: 100%;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
  backdrop-filter: blur(10px);
  border-radius: 16px;
  padding: 4px;
  box-shadow: 
    0 4px 6px -1px rgba(0, 0, 0, 0.1),
    0 2px 4px -1px rgba(0, 0, 0, 0.06),
    inset 0 1px 0 0 rgba(255, 255, 255, 0.1);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.search-input-wrapper:focus-within {
  box-shadow: 
    0 10px 15px -3px rgba(0, 0, 0, 0.1),
    0 4px 6px -2px rgba(0, 0, 0, 0.05),
    0 0 0 4px rgba(59, 130, 246, 0.1),
    inset 0 1px 0 0 rgba(255, 255, 255, 0.1);
  transform: translateY(-1px);
}

.search-icon {
  position: absolute;
  left: 20px;
  color: var(--color-text-secondary);
  pointer-events: none;
  z-index: 2;
  transition: all 0.3s ease;
  width: 20px;
  height: 20px;
}

.search-input-wrapper:focus-within .search-icon {
  color: var(--color-accent);
  transform: scale(1.1);
}

.search-input {
  width: 100%;
  padding: 16px 50px 16px 52px;
  font-size: 15px;
  font-weight: 400;
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 12px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  outline: none;
  box-shadow: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
}

.search-input:focus {
  background: rgba(255, 255, 255, 0.95);
  border-color: rgba(59, 130, 246, 0.3);
  box-shadow: 
    inset 0 2px 4px 0 rgba(0, 0, 0, 0.06),
    0 0 0 3px rgba(59, 130, 246, 0.1);
}

.search-input::placeholder {
  color: var(--color-text-tertiary);
  font-weight: 400;
  letter-spacing: 0.01em;
}

.search-clear {
  position: absolute;
  right: 12px;
  background: rgba(0, 0, 0, 0.05);
  border: none;
  padding: 8px;
  cursor: pointer;
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  width: 32px;
  height: 32px;
  opacity: 0.7;
}

.search-clear:hover {
  color: var(--color-text);
  background: rgba(0, 0, 0, 0.1);
  opacity: 1;
  transform: scale(1.1) rotate(90deg);
}

.search-clear:active {
  transform: scale(0.95) rotate(90deg);
}

/* Navigation */
.header-nav {
  position: relative;
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  padding: var(--space-2);
  cursor: pointer;
  z-index: 10;
}

.menu-icon {
  width: 24px;
  height: 2px;
  background-color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-item {
  margin: 0;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.nav-link:hover {
  color: var(--color-text);
  background-color: var(--color-bg-muted);
}

.nav-link.active {
  color: var(--color-accent);
  background-color: var(--color-accent-light);
}

.nav-link-icon {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

/* Category Badge */
.category-badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  color: var(--color-accent);
  background-color: var(--color-accent-light);
  border-radius: var(--radius-full);
}

.category-badge-large {
  display: inline-flex;
  align-items: center;
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-accent);
  background-color: var(--color-accent-light);
  border-radius: var(--radius-full);
}

/* Hero Section */
.hero-section {
  padding: var(--space-20) 0 var(--space-16);
  background: linear-gradient(to bottom, var(--color-bg-subtle) 0%, var(--color-bg) 100%);
  border-bottom: 1px solid var(--color-border);
}

.hero-content {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero-title {
  font-size: var(--text-5xl);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.hero-description {
  font-size: var(--text-xl);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
}

.hero-badge {
  display: flex;
  justify-content: center;
  margin-top: var(--space-6);
}

/* Content Section */
.content-section {
  padding: var(--space-16) 0;
}

.content-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: var(--space-8);
  align-items: start;
}

@media (max-width: 1024px) {
  .content-layout {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
}

/* Section Header */
.section-header {
  margin-bottom: var(--space-8);
}

.section-title {
  font-size: var(--text-3xl);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

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

/* Posts Grid */
.posts-container {
  min-width: 0; /* Prevent grid overflow */
}

.posts-grid {
  display: grid;
  gap: var(--space-6);
}

/* Article Card - Modern SaaS Style */
.article-card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.article-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-hover));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.article-card:hover {
  border-color: var(--color-border);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.article-card:hover::before {
  transform: scaleX(1);
}

.card-content {
  display: flex;
  flex-direction: row;
  gap: var(--space-4);
  align-items: flex-start;
}

.card-thumbnail {
  flex-shrink: 0;
  width: 120px;
  height: 120px;
  overflow: hidden;
  background-color: var(--color-bg-muted);
  border-radius: var(--radius-lg);
}

.card-thumbnail-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-base);
}

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

.card-text-content {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.card-header {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.card-title {
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  margin: 0;
}

.card-link {
  color: var(--color-text);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.card-date {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-secondary);
}

.card-category {
  display: inline-flex;
}

.category-link {
  color: var(--color-accent);
  font-weight: var(--weight-medium);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.card-excerpt {
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

.card-excerpt p {
  margin: 0;
  font-size: var(--text-base);
}

.card-footer {
  margin-top: var(--space-2);
}

.card-read-more {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-accent);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.card-read-more:hover {
  color: var(--color-accent-hover);
  gap: var(--space-3);
}

.icon-arrow {
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.card-read-more:hover .icon-arrow {
  transform: translateX(2px);
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: var(--space-16) var(--space-8);
}

.empty-state-icon {
  display: inline-flex;
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

.empty-state-title {
  font-size: var(--text-xl);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.empty-state-description {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  margin: 0;
}

/* Article Page */
.article-page {
  width: 100%;
}

.article-header {
  padding: var(--space-12) 0 var(--space-8);
  background: linear-gradient(to bottom, var(--color-bg-subtle) 0%, var(--color-bg) 100%);
  border-bottom: 1px solid var(--color-border);
}

.article-header-content {
  max-width: 800px;
  margin: 0 auto;
}

/* Breadcrumb */
.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  list-style: none;
  margin: 0 0 var(--space-6) 0;
  padding: 0;
  font-size: var(--text-sm);
}

.breadcrumb-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.breadcrumb-item::after {
  content: '/';
  color: var(--color-text-muted);
  margin-left: var(--space-2);
}

.breadcrumb-item:last-child::after {
  display: none;
}

.breadcrumb-link {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.breadcrumb-current {
  color: var(--color-text);
  font-weight: var(--weight-medium);
}

.article-title {
  font-size: var(--text-5xl);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin: 0 0 var(--space-6) 0;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.article-date {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.article-category {
  display: inline-flex;
}

.icon-calendar,
.icon-external {
  flex-shrink: 0;
}

/* Article Body */
.article-body {
  padding: var(--space-12) 0;
}

.article-content {
  max-width: 800px;
  margin: 0 auto;
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
}

.article-content h2 {
  font-size: var(--text-3xl);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  color: var(--color-text);
  margin-top: var(--space-12);
  margin-bottom: var(--space-4);
}

.article-content h3 {
  font-size: var(--text-2xl);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  margin-top: var(--space-8);
  margin-bottom: var(--space-3);
}

.article-content h4 {
  font-size: var(--text-xl);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  margin-top: var(--space-6);
  margin-bottom: var(--space-3);
}

.article-content p {
  margin-bottom: var(--space-6);
}

.article-content ul,
.article-content ol {
  margin-bottom: var(--space-6);
  padding-left: var(--space-6);
}

.article-content li {
  margin-bottom: var(--space-3);
  line-height: var(--leading-relaxed);
}

.article-content code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background-color: var(--color-bg-muted);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  color: var(--color-text);
}

.article-content pre {
  background-color: var(--color-gray-900);
  color: var(--color-gray-100);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  overflow-x: auto;
  margin-bottom: var(--space-6);
}

.article-content pre code {
  background: none;
  padding: 0;
  color: inherit;
}

.article-content blockquote {
  border-left: 4px solid var(--color-accent);
  padding-left: var(--space-4);
  margin: var(--space-6) 0;
  color: var(--color-text-secondary);
  font-style: italic;
}

.article-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  margin: var(--space-6) 0;
}

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

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

/* Article Footer */
.article-footer {
  max-width: 800px;
  margin: var(--space-12) auto 0;
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-border);
}

.article-source {
  margin-bottom: var(--space-6);
}

.source-label {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2);
}

.source-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-base);
  font-weight: var(--weight-medium);
  color: var(--color-accent);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.source-link:hover {
  color: var(--color-accent-hover);
  gap: var(--space-3);
}

.article-navigation {
  margin-top: var(--space-8);
}

.nav-link-back {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-accent);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.nav-link-back:hover {
  color: var(--color-accent-hover);
  gap: var(--space-3);
}

/* Category Header */
.category-header {
  padding: var(--space-12) 0 var(--space-8);
  background: linear-gradient(to bottom, var(--color-bg-subtle) 0%, var(--color-bg) 100%);
  border-bottom: 1px solid var(--color-border);
}

.category-header-content {
  max-width: 800px;
  margin: 0 auto;
}

.category-title {
  font-size: var(--text-4xl);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  color: var(--color-text);
  margin: 0 0 var(--space-4) 0;
}

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

/* Sidebar */
.sidebar {
  position: sticky;
  top: 100px;
}

.sidebar-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.sidebar-widget {
  background-color: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
}

.widget-title {
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  margin: 0 0 var(--space-4) 0;
}

.widget-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.widget-item {
  margin: 0;
}

.widget-link {
  display: block;
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  text-decoration: none;
  padding: var(--space-2) 0;
  transition: color var(--transition-fast);
}

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

.widget-link.active {
  color: var(--color-accent);
  font-weight: var(--weight-medium);
}

.widget-description {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin: 0 0 var(--space-4) 0;
}

.widget-button {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-accent);
  text-decoration: none;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-bg);
  transition: all var(--transition-fast);
}

.widget-button:hover {
  background-color: var(--color-bg-muted);
  border-color: var(--color-accent);
  color: var(--color-accent-hover);
}

.widget-stats {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.stat-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--color-border);
}

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

.stat-label {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.stat-value {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
}

/* Footer */
.site-footer {
  background-color: var(--color-bg-subtle);
  border-top: 1px solid var(--color-border);
  padding: var(--space-12) 0 var(--space-8);
  margin-top: var(--space-16);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-8);
  margin-bottom: var(--space-8);
}

.footer-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.footer-title {
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  color: var(--color-text);
  margin: 0;
}

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

.footer-heading {
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  margin: 0 0 var(--space-2) 0;
}

.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer-links li {
  margin: 0;
}

.footer-links a {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.footer-copyright {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin: 0 0 var(--space-2) 0;
}

.footer-meta {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin: 0;
}

/* Pagination */
.pagination {
  margin-top: var(--space-12);
}

.pagination-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.pagination-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-accent);
  text-decoration: none;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.pagination-link:hover {
  background-color: var(--color-bg-muted);
  color: var(--color-accent-hover);
}

.pagination-link.disabled {
  color: var(--color-text-muted);
  cursor: not-allowed;
  opacity: 0.5;
}

.pagination-info {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.pagination-current {
  font-weight: var(--weight-medium);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

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

.btn-primary:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: var(--color-bg-muted);
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn-secondary:hover {
  background-color: var(--color-bg);
  border-color: var(--color-border);
}

/* Tags */
.tag {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
  background-color: var(--color-bg-muted);
  border-radius: var(--radius-full);
}

/* Article Tags Section */
.article-tags {
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}

.tags-title {
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.tags-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.tag-item {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-accent);
  background-color: var(--color-accent-light);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.tag-item:hover {
  background-color: var(--color-accent);
  color: var(--color-text-inverse);
  transform: translateY(-1px);
}

/* Responsive Adjustments */
@media (max-width: 768px) {
  .header-content {
    flex-direction: row;
    gap: var(--space-4);
  }

  .header-brand {
    flex-shrink: 0;
  }

  .logo-image {
    height: 64px;
  }

  .header-search {
    flex: 1;
    min-width: 0;
  }

  .search-input-wrapper {
    padding: 3px;
    border-radius: 12px;
  }

  .search-input {
    padding: 14px 45px 14px 48px;
    font-size: 14px;
    border-radius: 10px;
  }

  .search-icon {
    left: 16px;
    width: 18px;
    height: 18px;
  }

  .search-clear {
    right: 10px;
    width: 28px;
    height: 28px;
    padding: 6px;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .nav-menu {
    position: absolute;
    top: 100%;
    right: 0;
    flex-direction: column;
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    min-width: 200px;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-base);
  }

  .nav-menu.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .hero-title {
    font-size: var(--text-4xl);
  }

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

  .article-title {
    font-size: var(--text-4xl);
  }

  .category-title {
    font-size: var(--text-3xl);
  }

  .sidebar {
    position: static;
  }

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

  .pagination-container {
    flex-direction: column;
    align-items: stretch;
  }

  .pagination-link {
    justify-content: center;
  }
}


/* Theme: tech */
:root {
  --color-accent: #fd7901;
  --color-accent-hover: #e66a00;
  --color-accent-light: #fff4e6;
  --color-accent-dark: #cc5f00;
}

/* Body Background */
body {
  background: linear-gradient(to bottom, #fafafa 0%, #ffffff 100%);
  min-height: 100vh;
}