/* IPTF Professional Theme - Financial Institution Grade */

/* ===========================
   CSS Variables
   =========================== */
:root {
  /* Professional color palette */
  --color-primary: #1a365d;      /* Deep navy */
  --color-primary-light: #2c5282;
  --color-accent: #3182ce;       /* Trustworthy blue */
  --color-accent-hover: #2b6cb0;

  /* Neutral tones */
  --color-text: #1a202c;
  --color-text-secondary: #4a5568;
  --color-text-muted: #718096;
  --color-border: #e2e8f0;
  --color-border-dark: #cbd5e0;
  --color-bg: #ffffff;
  --color-bg-subtle: #f7fafc;
  --color-bg-muted: #edf2f7;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Monaco', monospace;

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

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

  /* Border radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
}

/* ===========================
   Base Typography
   =========================== */
body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-primary);
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
}

h1 { font-size: 1.75rem; font-weight: 700; }
h2 { font-size: 1.375rem; }
h3 { font-size: 1.125rem; }
h4 { font-size: 1rem; }

p {
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

/* ===========================
   Site Header
   =========================== */
.site-header {
  border-top: 4px solid var(--color-primary);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
  padding: var(--spacing-md) 0;
}

.site-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.site-title:hover {
  color: var(--color-primary);
  text-decoration: none;
}

.site-logo {
  width: 24px;
  height: 24px;
  object-fit: contain;
}

.site-nav a {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
}

.site-nav a:hover {
  color: var(--color-primary);
  background: var(--color-bg-subtle);
  text-decoration: none;
}

.site-nav a.active {
  color: var(--color-primary);
  font-weight: 600;
}

/* ===========================
   Page Content
   =========================== */
.page-content {
  padding: var(--spacing-2xl) 0;
}

.wrapper {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* ===========================
   Blog Page Heading
   =========================== */
.page-heading {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-md);
  border-bottom: 2px solid var(--color-border);
}

/* ===========================
   Blog Post Cards
   =========================== */
.post-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

.post-list > li {
  margin: 0;
}

.post-card-link {
  display: block;
  text-decoration: none;
  color: inherit;
}

.post-card-link:hover {
  text-decoration: none;
}

.post-card {
  display: flex;
  gap: var(--spacing-lg);
  padding: var(--spacing-lg);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all 0.2s ease;
}

.post-card:hover {
  border-color: var(--color-border-dark);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  cursor: pointer;
}

.post-card-thumbnail {
  flex-shrink: 0;
  width: 200px;
  height: 120px;
  overflow: hidden;
  border-radius: var(--radius-md);
  background: var(--color-bg-muted);
}

.post-card-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

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

.post-card-content {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.post-card-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0 0 var(--spacing-sm) 0;
  line-height: 1.4;
}

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

.post-card-title a:hover {
  color: var(--color-accent);
  text-decoration: none;
}

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

.post-card-meta .separator {
  color: var(--color-border-dark);
}

.post-card-description {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-card-footer {
  margin-top: auto;
  padding-top: var(--spacing-md);
}

.read-more {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.read-more:hover {
  text-decoration: none;
  gap: var(--spacing-sm);
}

.read-more::after {
  content: '\2192';
  transition: transform 0.2s ease;
}

.post-card:hover .read-more::after {
  transform: translateX(4px);
}

/* Responsive: Stack cards on mobile */
@media (max-width: 640px) {
  .post-card {
    flex-direction: column;
  }

  .post-card-thumbnail {
    width: 100%;
    height: 160px;
  }
}

/* ===========================
   Individual Post Styles
   =========================== */
.post-hero {
  margin: calc(-1 * var(--spacing-2xl)) calc(-50vw + 50%) var(--spacing-xl);
  width: 100vw;
  max-height: 400px;
  overflow: hidden;
}

.post-hero img {
  max-width: 100%;
  height: auto;
  max-height: 400px;
  object-fit: contain;
  display: block;
  margin: 0 auto;
}

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

.post-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-primary);
  margin: 0 0 var(--spacing-md) 0;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.post-meta {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--spacing-sm);
}

.post-meta .author {
  font-weight: 500;
  color: var(--color-text-secondary);
}

.post-meta .reading-time {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.post-meta .reading-time::before {
  content: '';
  width: 4px;
  height: 4px;
  background: var(--color-text-muted);
  border-radius: 50%;
}

/* ===========================
   Post Content
   =========================== */
.post-content {
  font-size: 1.0625rem;
  line-height: 1.8;
}

.post-content h2 {
  margin-top: var(--spacing-2xl);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border);
}

.post-content h3 {
  margin-top: var(--spacing-xl);
}

.post-content ul,
.post-content ol {
  padding-left: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
  list-style: disc;
}

.post-content ol {
  list-style: decimal;
}

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

.post-content blockquote {
  margin: var(--spacing-lg) 0;
  padding: var(--spacing-md) var(--spacing-lg);
  border-left: 3px solid var(--color-border-dark);
  background: var(--color-bg-subtle);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: normal;
  color: var(--color-text-secondary);
}

.post-content blockquote p:last-child {
  margin-bottom: 0;
}

/* Code blocks - inline */
.post-content code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--color-bg-muted);
  padding: 0.2em 0.4em;
  border-radius: var(--radius-sm);
  color: var(--color-text);
}

/* Code blocks - block level */
.post-content pre,
.highlighter-rouge .highlight,
div.highlight,
figure.highlight {
  background: #0d1117 !important;
  color: #c9d1d9 !important;
  padding: var(--spacing-lg);
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin: var(--spacing-lg) 0;
  font-size: 0.875rem;
  line-height: 1.6;
  border: 1px solid #30363d;
}

.post-content pre code,
.highlighter-rouge pre.highlight code,
div.highlight code,
figure.highlight code {
  background: none !important;
  padding: 0;
  color: inherit;
  font-size: inherit;
}

/* Rouge syntax highlighting - GitHub Dark theme */
.highlight .c,
.highlight .c1,
.highlight .cm { color: #8b949e !important; font-style: italic; } /* Comments */
.highlight .k,
.highlight .kd,
.highlight .kn,
.highlight .kp,
.highlight .kr,
.highlight .kt { color: #ff7b72 !important; } /* Keywords */
.highlight .s,
.highlight .s1,
.highlight .s2,
.highlight .sb,
.highlight .sc,
.highlight .sd,
.highlight .se,
.highlight .sh,
.highlight .si,
.highlight .sx,
.highlight .sr { color: #a5d6ff !important; } /* Strings */
.highlight .n,
.highlight .na,
.highlight .nb,
.highlight .nc,
.highlight .nd,
.highlight .ne,
.highlight .nf,
.highlight .ni,
.highlight .nl,
.highlight .nn,
.highlight .no,
.highlight .nt,
.highlight .nv { color: #c9d1d9 !important; } /* Names */
.highlight .nc,
.highlight .nf { color: #d2a8ff !important; } /* Class/Function names */
.highlight .mi,
.highlight .mf,
.highlight .mh,
.highlight .mo,
.highlight .il { color: #79c0ff !important; } /* Numbers */
.highlight .o,
.highlight .ow { color: #ff7b72 !important; } /* Operators */
.highlight .p { color: #c9d1d9 !important; } /* Punctuation */
.highlight .err { color: #f85149 !important; } /* Errors */
.highlight .gd { color: #ffa198 !important; background: #490202 !important; } /* Deleted */
.highlight .gi { color: #7ee787 !important; background: #04260f !important; } /* Inserted */
.highlight .gh { color: #79c0ff !important; font-weight: bold; } /* Heading */
.highlight .nt { color: #7ee787 !important; } /* HTML/XML tags */
.highlight .na { color: #79c0ff !important; } /* Attributes */

/* Tables */
.post-content table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--spacing-lg) 0;
  font-size: 0.9375rem;
}

.post-content th,
.post-content td {
  padding: var(--spacing-sm) var(--spacing-md);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.post-content th {
  background: var(--color-bg-subtle);
  font-weight: 600;
  color: var(--color-primary);
}

.post-content tr:hover td {
  background: var(--color-bg-subtle);
}

/* Images in posts */
.post-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  margin: var(--spacing-lg) 0;
}

/* ===========================
   Footer
   =========================== */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-xl) 0;
  margin-top: var(--spacing-2xl);
  background: var(--color-bg-subtle);
}

.site-footer .wrapper {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* ===========================
   Homepage Styles
   =========================== */

/* Hero Section */
.hero {
  text-align: center;
  padding: var(--spacing-2xl) 0;
  margin-top: calc(-1 * var(--spacing-2xl));
  margin-bottom: var(--spacing-xl);
  background: linear-gradient(180deg, var(--color-bg-subtle) 0%, var(--color-bg) 100%);
  border-bottom: 1px solid var(--color-border);
  margin-left: calc(-50vw + 50%);
  margin-right: calc(-50vw + 50%);
  padding-left: calc(50vw - 50%);
  padding-right: calc(50vw - 50%);
}

.hero-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-accent);
  background: rgba(49, 130, 206, 0.1);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: 100px;
  margin-bottom: var(--spacing-md);
}

.hero h1 {
  font-size: 1.875rem;
  margin: 0 0 var(--spacing-sm) 0;
  color: var(--color-primary);
}

.hero-tagline {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  margin: 0;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* About Section */
.about {
  margin-bottom: var(--spacing-xl);
}

.about p {
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* Section Headings */
.initiatives h2,
.latest-posts h2,
.contact h2 {
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid var(--color-border);
}

/* Initiative Cards */
.initiative-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.initiative-card {
  padding: var(--spacing-lg);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: all 0.2s ease;
}

a.initiative-card {
  cursor: pointer;
}

a.initiative-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-sm);
  text-decoration: none;
  transform: translateY(-2px);
}

.initiative-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--color-bg-subtle);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
  color: var(--color-accent);
}

.initiative-icon svg {
  width: 20px;
  height: 20px;
}

a.initiative-card:hover .initiative-icon {
  background: rgba(49, 130, 206, 0.1);
}

.initiative-card h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-primary);
  margin: 0 0 var(--spacing-xs) 0;
}

.initiative-card p {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin: 0;
  line-height: 1.5;
}

/* Featured Posts */
.featured-posts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.featured-post-card {
  display: flex;
  flex-direction: column;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  text-decoration: none;
  transition: all 0.2s ease;
}

.featured-post-card:hover {
  border-color: var(--color-border-dark);
  box-shadow: var(--shadow-md);
  text-decoration: none;
  cursor: pointer;
}

.featured-post-image {
  width: 100%;
  height: 140px;
  overflow: hidden;
  background: var(--color-bg-muted);
}

.featured-post-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

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

.featured-post-content {
  padding: var(--spacing-md);
}

.featured-post-content h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-primary);
  margin: 0 0 var(--spacing-xs) 0;
  line-height: 1.4;
}

.featured-post-meta {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin: 0 0 var(--spacing-sm) 0;
}

.featured-post-desc {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin: 0;
  line-height: 1.5;
}

.see-all-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-accent);
}

.see-all-link:hover {
  text-decoration: underline;
}

/* Contact Section */
.contact {
  margin-top: var(--spacing-xl);
}

.contact-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
}

.contact-item {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--spacing-lg);
  background: var(--color-bg-subtle);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: all 0.2s ease;
  text-align: center;
}

.contact-item:hover {
  background: var(--color-bg-muted);
  text-decoration: none;
}

.contact-label {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-xs);
}

.contact-value {
  font-size: 0.875rem;
  color: var(--color-accent);
  font-weight: 500;
}

/* Responsive */
@media (max-width: 640px) {
  .hero {
    padding: var(--spacing-xl) var(--spacing-md);
  }

  .hero h1 {
    font-size: 1.5rem;
  }

  .hero-badge {
    font-size: 0.6875rem;
  }

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

  .featured-posts {
    grid-template-columns: 1fr;
  }

  .contact-links {
    grid-template-columns: 1fr;
  }
}

.home h1:first-child,
.home h2:first-child {
  margin-top: 0;
}

/* ===========================
   Utility Classes
   =========================== */
.text-muted {
  color: var(--color-text-muted);
}

.text-small {
  font-size: 0.875rem;
}

/* ===========================
   ToC Overrides (Professional)
   =========================== */
.post-toc h3 {
  color: var(--color-primary);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
}

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

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

.post-toc a.active {
  color: var(--color-accent);
  font-weight: 500;
}

/* ===========================
   Print Styles
   =========================== */
@media print {
  .site-header,
  .site-footer,
  .post-toc {
    display: none;
  }

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