/* ==========================================================================
   The Grognard Codes — Technical Portfolio & Blog Stylesheet
   Theme: Refined Stone, Gold & Slate (Clean, Modern Engineering Aesthetic)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  /* Slate & Stone Palette */
  --color-bg-base: #121212;
  --color-bg-surface: #1a1918;
  --color-bg-elevated: #242220;
  --color-bg-alt: #1e1d1b;

  /* Stone Borders */
  --color-stone-dark: #2d2b28;
  --color-stone-mid: #423f3b;
  --color-stone-light: #615c56;
  --color-stone-border: #353330;

  /* Refined Gold Accents */
  --color-gold-deep: #8f6e1f;
  --color-gold-base: #c59b27;
  --color-gold-bright: #dfb235;
  --color-gold-light: #f3cf65;
  --color-gold-subtle: rgba(197, 155, 39, 0.12);

  /* Typography Colors */
  --color-text-primary: #ece7de;
  --color-text-secondary: #beb6a8;
  --color-text-muted: #8c8477;

  /* Fonts */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-code: 'JetBrains Mono', Consolas, Monaco, monospace;

  /* Layout */
  --max-width: 1140px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 10px;
}

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

html {
  scroll-behavior: smooth;
  color-scheme: dark;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg-base);
  color: var(--color-text-primary);
  line-height: 1.65;
  font-size: 1rem;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 {
  color: #fff;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.25;
}

h1 {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
}

h2 {
  font-size: clamp(1.5rem, 2.5vw, 1.85rem);
  margin-bottom: 0.5rem;
}

h3 {
  font-size: 1.25rem;
  margin-bottom: 0.35rem;
}

p {
  margin-bottom: 1.1rem;
  color: var(--color-text-secondary);
}

a {
  color: var(--color-gold-bright);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover {
  color: var(--color-gold-light);
}

/* Site Navigation */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(18, 18, 18, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-stone-border);
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.9rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 700;
  font-size: 1.05rem;
  color: #fff;
  letter-spacing: -0.01em;
}

.nav-brand-accent {
  color: var(--color-gold-bright);
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  align-items: center;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color 0.15s ease;
}

.nav-link:hover {
  color: #fff;
}

.btn-github-nav {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--color-stone-mid);
  background: var(--color-bg-elevated);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-primary);
  transition: all 0.15s ease;
}

.btn-github-nav:hover {
  border-color: var(--color-gold-base);
  color: #fff;
  background: var(--color-stone-dark);
}

/* Hero Section */
.hero-section {
  padding: 4rem 1.5rem 3rem;
  max-width: var(--max-width);
  margin: 0 auto;
  border-bottom: 1px solid var(--color-stone-border);
}

.hero-grid {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 3rem;
  align-items: center;
}

.portrait-container {
  display: flex;
  justify-content: center;
}

.portrait-avatar {
  width: 190px;
  height: 190px;
  border-radius: 50%;
  object-fit: cover;
  display: block;
  border: 3px solid var(--color-stone-mid);
  box-shadow: 0 0 0 1px var(--color-gold-deep), 0 8px 24px rgba(0, 0, 0, 0.6);
}

.hero-content {
  display: flex;
  flex-direction: column;
}

.hero-meta-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-gold-base);
  margin-bottom: 0.5rem;
}

.hero-title {
  margin-bottom: 0.6rem;
}

.hero-title span {
  color: var(--color-gold-bright);
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--color-text-primary);
  margin-bottom: 1rem;
  font-weight: 500;
}

.hero-bio {
  font-size: 0.98rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 1.5rem;
  max-width: 780px;
}

/* Focus Tags */
.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.hero-tag {
  font-size: 0.8rem;
  font-family: var(--font-code);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-stone-border);
  color: var(--color-text-secondary);
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-sm);
}

.hero-actions {
  display: flex;
  gap: 0.85rem;
  flex-wrap: wrap;
}

/* Modern Clean Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1.15rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-primary {
  background: var(--color-gold-base);
  color: #121110;
  border: 1px solid var(--color-gold-bright);
}

.btn-primary:hover {
  background: var(--color-gold-bright);
  color: #000;
  transform: translateY(-1px);
}

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

.btn-secondary:hover {
  border-color: var(--color-gold-base);
  color: #fff;
  background: var(--color-stone-dark);
}

/* Sections */
.section-wrapper {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3.5rem 1.5rem;
}

.section-header {
  margin-bottom: 2rem;
}

.section-header p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* Domain Verification Badge */
.domain-notice {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-stone-border);
  border-left: 3px solid var(--color-gold-base);
  border-radius: var(--radius-sm);
  padding: 0.9rem 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2.5rem;
  gap: 1rem;
}

.domain-notice-text {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

.domain-notice-text strong {
  color: #fff;
}

.domain-code {
  font-family: var(--font-code);
  font-size: 0.85rem;
  background: var(--color-bg-base);
  border: 1px solid var(--color-stone-mid);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
  color: var(--color-gold-bright);
  white-space: nowrap;
}

/* ==========================================================================
   Project Cards
   ========================================================================== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 1.75rem;
}

.project-card {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-stone-border);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.project-card:hover {
  border-color: var(--color-gold-deep);
  transform: translateY(-2px);
}

.project-card.featured {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 380px 1fr;
  align-items: stretch;
}

.project-media {
  background: #0d0c0c;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  border-right: 1px solid var(--color-stone-border);
  padding: 1.5rem;
}

.project-media-img {
  width: 100%;
  max-width: 100%;
  height: auto;
  max-height: 380px;
  object-fit: contain;
  display: block;
}

.project-content {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.project-header {
  display: flex;
  align-items: flex-start;
  gap: 0.9rem;
  margin-bottom: 0.9rem;
}

.project-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-stone-border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  overflow: hidden;
}

.project-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.project-icon.code-icon {
  font-family: var(--font-code);
  font-size: 1.1rem;
  color: var(--color-gold-bright);
}

.project-titles h3 {
  font-size: 1.25rem;
  color: #fff;
}

.project-subtitle {
  font-size: 0.85rem;
  color: var(--color-gold-base);
}

.project-desc {
  font-size: 0.92rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 1rem;
}

.project-highlights {
  list-style: none;
  margin-bottom: 1.25rem;
  font-size: 0.88rem;
}

.project-highlights li {
  position: relative;
  padding-left: 1.2rem;
  margin-bottom: 0.4rem;
  color: var(--color-text-secondary);
}

.project-highlights li::before {
  content: '•';
  position: absolute;
  left: 0.2rem;
  color: var(--color-gold-base);
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: auto;
  margin-bottom: 1.25rem;
}

.tag {
  font-family: var(--font-code);
  font-size: 0.75rem;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-stone-border);
  color: var(--color-text-muted);
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-sm);
}

.project-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.9rem;
  border-top: 1px solid var(--color-stone-border);
}

.project-action-link {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-gold-bright);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.project-btn-sm {
  font-size: 0.8rem;
  padding: 0.3rem 0.75rem;
}

/* Mini table for agent config */
.table-simple {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
  margin-bottom: 1rem;
  border: 1px solid var(--color-stone-border);
}

.table-simple th, .table-simple td {
  padding: 0.4rem 0.6rem;
  text-align: left;
  border-bottom: 1px solid var(--color-stone-border);
}

.table-simple th {
  background: var(--color-bg-elevated);
  color: #fff;
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.table-simple code {
  color: var(--color-gold-bright);
  font-family: var(--font-code);
  font-size: 0.8rem;
}

/* ==========================================================================
   Blog Section
   ========================================================================== */
.blog-filters {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.75rem;
  flex-wrap: wrap;
}

.filter-btn {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-stone-border);
  color: var(--color-text-secondary);
  font-size: 0.82rem;
  font-weight: 500;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s ease;
}

.filter-btn:hover, .filter-btn.active {
  background: var(--color-bg-elevated);
  border-color: var(--color-gold-base);
  color: #fff;
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

.blog-card {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-stone-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  transition: border-color 0.15s ease, transform 0.15s ease;
  cursor: pointer;
}

.blog-card:hover {
  border-color: var(--color-gold-deep);
  transform: translateY(-2px);
}

.blog-meta {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
}

.category-badge {
  background: var(--color-gold-subtle);
  border: 1px solid var(--color-gold-deep);
  color: var(--color-gold-bright);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  padding: 0.1rem 0.45rem;
  border-radius: var(--radius-sm);
  letter-spacing: 0.04em;
}

.blog-card h3 {
  font-size: 1.15rem;
  line-height: 1.4;
  margin-bottom: 0.6rem;
  color: #fff;
}

.blog-card:hover h3 {
  color: var(--color-gold-bright);
}

.blog-excerpt {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.55;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.blog-action {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-gold-bright);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

/* ==========================================================================
   Article Modal Reader
   ========================================================================== */
.article-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 1000;
  background: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(6px);
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.article-modal.active {
  display: flex;
  opacity: 1;
}

.modal-content-wrapper {
  background: #191817;
  border: 1px solid var(--color-stone-mid);
  border-radius: var(--radius-md);
  width: 100%;
  max-width: 820px;
  max-height: 88vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.8);
}

.modal-header {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--color-stone-border);
  background: var(--color-bg-surface);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-close-btn {
  background: transparent;
  border: 1px solid var(--color-stone-mid);
  color: var(--color-text-secondary);
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.15s ease;
}

.modal-close-btn:hover {
  border-color: #fff;
  color: #fff;
}

.modal-scrollable-body {
  padding: 2rem 2.25rem;
  overflow-y: auto;
  font-size: 0.98rem;
  line-height: 1.75;
  color: var(--color-text-primary);
}

.modal-scrollable-body h2 {
  font-size: 1.5rem;
  color: #fff;
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
}

.modal-scrollable-body h3 {
  font-size: 1.2rem;
  color: #fff;
  margin-top: 1.25rem;
  margin-bottom: 0.5rem;
}

.modal-scrollable-body code {
  background: #0f0e0e;
  padding: 0.15rem 0.4rem;
  border-radius: 3px;
  font-family: var(--font-code);
  font-size: 0.88em;
  color: var(--color-gold-bright);
  border: 1px solid var(--color-stone-dark);
}

.modal-scrollable-body pre {
  background: #0e0d0d;
  border: 1px solid var(--color-stone-border);
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  overflow-x: auto;
  margin: 1.25rem 0;
}

.modal-scrollable-body pre code {
  background: transparent;
  border: none;
  padding: 0;
  color: var(--color-text-secondary);
}

.modal-scrollable-body blockquote {
  border-left: 3px solid var(--color-gold-base);
  background: var(--color-bg-surface);
  padding: 0.75rem 1.15rem;
  margin: 1.25rem 0;
  color: var(--color-text-secondary);
  font-style: italic;
}

/* ==========================================================================
   Engineering Principles / Philosophy
   ========================================================================== */
.principles-card {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-stone-border);
  border-radius: var(--radius-md);
  padding: 2rem;
}

.principles-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 1.25rem;
}

.principle-item {
  border-left: 2px solid var(--color-stone-mid);
  padding-left: 1rem;
}

.principle-item h4 {
  font-size: 1.05rem;
  color: #fff;
  margin-bottom: 0.35rem;
}

.principle-item p {
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 0;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-stone-border);
  background: #0f0e0e;
  padding: 2.5rem 1.5rem;
  font-size: 0.88rem;
  color: var(--color-text-muted);
}

.footer-content {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.2rem;
}

.footer-brand {
  font-weight: 600;
  color: #fff;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

.footer-links a {
  color: var(--color-text-secondary);
  font-size: 0.85rem;
}

.footer-links a:hover {
  color: #fff;
}

.footer-copy {
  width: 100%;
  font-size: 0.8rem;
  color: #666;
  margin-top: 0.75rem;
}

/* Responsive */
@media (max-width: 860px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 1.75rem;
  }

  .portrait-container {
    margin: 0 auto;
  }

  .hero-meta-tag, .hero-tags, .hero-actions {
    justify-content: center;
  }

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

  .project-media {
    border-right: none;
    border-bottom: 1px solid var(--color-stone-border);
    padding: 1.5rem 1rem;
    max-height: none;
  }

  .project-media-img {
    width: 100%;
    max-width: 360px;
    height: auto;
    margin: 0 auto;
  }

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

  .domain-notice {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 600px) {
  .nav-container {
    flex-direction: column;
    gap: 0.75rem;
  }

  .nav-links {
    gap: 1rem;
  }
}