/* ========================================
   AssetFlow Blog - Main Stylesheet
   ======================================== */

/* CSS Variables */
:root {
  /* Colors */
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-secondary: #64748b;
  --color-accent: #f59e0b;
  --color-success: #10b981;
  --color-error: #ef4444;

  /* Text Colors */
  --color-text: #1e293b;
  --color-text-light: #64748b;
  --color-text-muted: #94a3b8;

  /* Background Colors */
  --color-bg: #ffffff;
  --color-bg-alt: #f8fafc;
  --color-bg-card: #ffffff;

  /* Border Colors */
  --color-border: #e2e8f0;
  --color-border-light: #f1f5f9;

  /* Typography */
  --font-heebo: 'Heebo', sans-serif;
  --font-inter: 'Inter', sans-serif;
  --font-size-base: 16px;
  --line-height-base: 1.7;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;

  /* 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);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);

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

  /* Container */
  --container-max: 1200px;
  --content-max: 800px;
}

/* High Contrast Mode */
body.high-contrast {
  --color-bg: #000000;
  --color-bg-alt: #1a1a1a;
  --color-bg-card: #1a1a1a;
  --color-text: #ffffff;
  --color-text-light: #e0e0e0;
  --color-border: #444444;
  --color-primary: #ffd700;
  --color-primary-dark: #ffcc00;
}

/* Font Size Adjustments */
body.font-large {
  --font-size-base: 18px;
}

body.font-xlarge {
  --font-size-base: 20px;
}

body.font-small {
  --font-size-base: 14px;
}

/* ========================================
   Reset & Base Styles
   ======================================== */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-heebo);
  font-size: 1rem;
  line-height: var(--line-height-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* RTL Support */
.lang-he, [dir="rtl"] {
  direction: rtl;
  text-align: right;
}

.lang-en, [dir="ltr"] {
  direction: ltr;
  text-align: left;
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: white;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  z-index: 1000;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--spacing-md);
  color: white;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

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

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

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

/* ========================================
   Header
   ======================================== */

.site-header {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(8px);
  background: rgba(255, 255, 255, 0.95);
}

.high-contrast .site-header {
  background: var(--color-bg);
  backdrop-filter: none;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
  padding: var(--spacing-md) 0;
}

.logo {
  display: flex;
  align-items: baseline;
  gap: var(--spacing-xs);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-text);
}

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

.logo-text {
  color: var(--color-primary);
}

.logo-blog {
  font-weight: 400;
  color: var(--color-text-light);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  list-style: none;
}

.nav-links a {
  color: var(--color-text-light);
  font-weight: 500;
  padding: var(--spacing-xs) 0;
  border-bottom: 2px solid transparent;
  transition: all var(--transition-fast);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.lang-switcher {
  margin-right: auto;
  margin-left: 0;
}

[dir="ltr"] .lang-switcher {
  margin-left: auto;
  margin-right: 0;
}

.lang-link {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--color-bg-alt);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
}

/* ========================================
   Main Content
   ======================================== */

.main-content {
  flex: 1;
  padding: var(--spacing-2xl) 0;
}

/* ========================================
   Blog List
   ======================================== */

.blog-list {
  display: grid;
  gap: var(--spacing-xl);
}

.blog-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
}

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

.blog-card-image {
  aspect-ratio: 16/9;
  background: var(--color-bg-alt);
  overflow: hidden;
}

.blog-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.blog-card-content {
  padding: var(--spacing-lg);
}

.blog-card-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.blog-card-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  line-height: 1.4;
}

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

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

.blog-card-excerpt {
  color: var(--color-text-light);
  margin-bottom: var(--spacing-md);
  line-height: 1.6;
}

.blog-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.tag {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--color-bg-alt);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  color: var(--color-text-light);
}

/* ========================================
   Blog Post
   ======================================== */

.post-header {
  max-width: var(--content-max);
  margin: 0 auto var(--spacing-2xl);
  text-align: center;
}

.post-title {
  font-size: 2.25rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: var(--spacing-md);
}

.post-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  color: var(--color-text-light);
  font-size: 0.875rem;
}

.post-featured-image {
  max-width: var(--content-max);
  margin: 0 auto var(--spacing-2xl);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.post-featured-image img {
  width: 100%;
}

.post-content {
  max-width: var(--content-max);
  margin: 0 auto;
}

.post-content h2 {
  font-size: 1.75rem;
  font-weight: 600;
  margin-top: var(--spacing-2xl);
  margin-bottom: var(--spacing-md);
}

.post-content h3 {
  font-size: 1.375rem;
  font-weight: 600;
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
}

.post-content p {
  margin-bottom: var(--spacing-md);
}

.post-content ul, .post-content ol {
  margin-bottom: var(--spacing-md);
  padding-right: var(--spacing-lg);
}

[dir="ltr"] .post-content ul,
[dir="ltr"] .post-content ol {
  padding-right: 0;
  padding-left: var(--spacing-lg);
}

.post-content li {
  margin-bottom: var(--spacing-xs);
}

.post-content blockquote {
  border-right: 4px solid var(--color-primary);
  padding: var(--spacing-md) var(--spacing-lg);
  margin: var(--spacing-lg) 0;
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
}

[dir="ltr"] .post-content blockquote {
  border-right: none;
  border-left: 4px solid var(--color-primary);
}

.post-content code {
  background: var(--color-bg-alt);
  padding: 0.125rem 0.375rem;
  border-radius: var(--radius-sm);
  font-size: 0.875em;
}

.post-content pre {
  background: var(--color-text);
  color: var(--color-bg);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin: var(--spacing-md) 0;
}

.post-content pre code {
  background: none;
  padding: 0;
}

.post-content img {
  border-radius: var(--radius-md);
  margin: var(--spacing-lg) auto;
}

/* Callout / Highlight Box */
.callout {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.1) 0%, rgba(16, 185, 129, 0.1) 100%);
  padding: var(--spacing-lg);
  border-radius: var(--radius-xl);
  margin: var(--spacing-xl) 0;
  text-align: center;
}

.callout-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.callout-content {
  color: var(--color-text-light);
  line-height: 1.7;
}

/* Investment Timeline */
.timeline {
  margin: var(--spacing-xl) 0;
  position: relative;
  padding-right: 30px;
}

[dir="ltr"] .timeline {
  padding-right: 0;
  padding-left: 30px;
}

.timeline::before {
  content: '';
  position: absolute;
  right: 8px;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--color-primary) 0%, var(--color-success) 100%);
  border-radius: 2px;
}

[dir="ltr"] .timeline::before {
  right: auto;
  left: 8px;
}

.timeline-item {
  position: relative;
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

.timeline-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateX(-4px);
}

[dir="ltr"] .timeline-item:hover {
  transform: translateX(4px);
}

.timeline-item::before {
  content: '';
  position: absolute;
  right: -26px;
  top: 24px;
  width: 16px;
  height: 16px;
  background: var(--color-bg-card);
  border: 4px solid var(--color-primary);
  border-radius: 50%;
  z-index: 1;
}

[dir="ltr"] .timeline-item::before {
  right: auto;
  left: -26px;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-item:last-child::before {
  border-color: var(--color-success);
  background: var(--color-success);
}

.timeline-item:last-child::after {
  content: '✓';
  position: absolute;
  right: -26px;
  top: 24px;
  width: 16px;
  height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 10px;
  font-weight: bold;
  z-index: 2;
}

[dir="ltr"] .timeline-item:last-child::after {
  right: auto;
  left: -26px;
}

.timeline-item h4 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.timeline-item:last-child h4 {
  color: var(--color-success);
}

.timeline-item h4::before {
  content: '';
  display: none;
}

.timeline-item ul {
  margin: 0;
  padding-right: var(--spacing-md);
}

[dir="ltr"] .timeline-item ul {
  padding-right: 0;
  padding-left: var(--spacing-md);
}

.timeline-item li {
  margin-bottom: var(--spacing-xs);
  color: var(--color-text-light);
}

.timeline-item li:last-child {
  margin-bottom: 0;
}

.timeline-item li strong {
  color: var(--color-text);
}

/* Investment Details Box */
.details-box {
  background: var(--color-bg-alt);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  margin: var(--spacing-lg) 0;
}

.details-box h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--color-primary);
}

.details-box ul {
  margin: 0;
}

/* Post Tags */
.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-2xl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--color-border);
}

/* Language Links */
.post-languages {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-lg);
  padding: var(--spacing-md);
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
}

.post-languages span {
  color: var(--color-text-light);
}

.post-languages a {
  font-weight: 500;
}

/* ========================================
   Comments Section (Giscus)
   ======================================== */

.comments-section {
  max-width: var(--content-max);
  margin: var(--spacing-2xl) auto 0;
  padding-top: var(--spacing-2xl);
  border-top: 1px solid var(--color-border);
}

.comments-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
}

/* ========================================
   Footer
   ======================================== */

.site-footer {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-2xl) 0 var(--spacing-lg);
  margin-top: auto;
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-xl);
}

.footer-brand .logo-text {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
}

.footer-brand p {
  color: var(--color-text-light);
  margin-top: var(--spacing-xs);
}

.footer-links {
  display: flex;
  gap: var(--spacing-2xl);
}

.footer-section h4 {
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
}

.footer-section ul {
  list-style: none;
}

.footer-section li {
  margin-bottom: var(--spacing-sm);
}

.footer-section a {
  color: var(--color-text-light);
  font-size: 0.875rem;
}

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

.footer-bottom {
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border);
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

/* ========================================
   Accessibility Toolbar
   ======================================== */

.a11y-toolbar {
  position: fixed;
  bottom: var(--spacing-lg);
  left: var(--spacing-lg);
  z-index: 1000;
}

[dir="ltr"] .a11y-toolbar {
  left: auto;
  right: var(--spacing-lg);
}

.a11y-toggle {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-primary);
  color: white;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-base);
}

.a11y-toggle:hover {
  background: var(--color-primary-dark);
  transform: scale(1.05);
}

.a11y-toggle[aria-expanded="true"] {
  background: var(--color-primary-dark);
}

.a11y-panel {
  position: absolute;
  bottom: 60px;
  left: 0;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  min-width: 200px;
  box-shadow: var(--shadow-lg);
}

[dir="ltr"] .a11y-panel {
  left: auto;
  right: 0;
}

.a11y-panel[hidden] {
  display: none;
}

.a11y-group {
  margin-bottom: var(--spacing-md);
}

.a11y-group:last-of-type {
  margin-bottom: 0;
}

.a11y-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-xs);
}

.a11y-buttons {
  display: flex;
  gap: var(--spacing-xs);
}

.a11y-buttons button {
  flex: 1;
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.a11y-buttons button:hover {
  background: var(--color-border);
}

.a11y-buttons button.active {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

.a11y-actions {
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border);
}

.a11y-actions button {
  width: 100%;
  padding: var(--spacing-sm);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.a11y-actions button:hover {
  background: var(--color-border);
}

/* ========================================
   Empty State
   ======================================== */

.empty-state {
  text-align: center;
  padding: var(--spacing-2xl);
  color: var(--color-text-light);
}

.empty-state-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
  opacity: 0.5;
}

/* ========================================
   Responsive Design
   ======================================== */

@media (max-width: 768px) {
  .nav {
    flex-wrap: wrap;
  }

  .nav-links {
    order: 3;
    width: 100%;
    justify-content: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
    margin-top: var(--spacing-md);
  }

  .post-title {
    font-size: 1.75rem;
  }

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

  .footer-links {
    justify-content: center;
  }

  .a11y-toolbar {
    bottom: var(--spacing-md);
    left: var(--spacing-md);
  }
}

@media (max-width: 480px) {
  .post-title {
    font-size: 1.5rem;
  }

  .nav-links {
    gap: var(--spacing-md);
    font-size: 0.875rem;
  }
}

/* ========================================
   Print Styles
   ======================================== */

@media print {
  .site-header,
  .site-footer,
  .a11y-toolbar,
  .comments-section {
    display: none;
  }

  .main-content {
    padding: 0;
  }

  body {
    font-size: 12pt;
    color: black;
    background: white;
  }
}