/* WSIRC Custom Bespoke Stylesheet - Engineering & Optimization Theme */

:root {
  --bg-main: #0b0f19;
  --bg-card: #131b2e;
  --bg-card-hover: #1b2641;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dark: #64748b;
  --accent-cyan: #06b6d4;
  --accent-cyan-glow: rgba(6, 182, 212, 0.15);
  --accent-emerald: #10b981;
  --accent-indigo: #6366f1;
  --border-color: #1e293b;
  --border-color-hover: #334155;
  --font-sans: "Segoe UI", "Avenir Next", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  --container-width: 1100px;
  --transition-speed: 0.25s;
}

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

body {
  background-color: var(--bg-main);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a:hover {
  color: #22d3ee;
}

/* Layout container */
.site-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(11, 15, 25, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
}

.header-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 1.25rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.5rem;
  letter-spacing: -0.05em;
  display: flex;
  align-items: center;
}

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

.logo-suffix {
  color: var(--accent-cyan);
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-emerald));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 2rem;
}

.nav-link {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 500;
  padding: 0.25rem 0;
  position: relative;
}

.nav-link:hover, .nav-link.active {
  color: var(--accent-cyan);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent-cyan);
  transition: width var(--transition-speed) ease;
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

/* Main Content area */
.site-main {
  flex-grow: 1;
  max-width: var(--container-width);
  width: 100%;
  margin: 0 auto;
  padding: 3.5rem 2rem;
}

/* Homepage specific styles */
.hero-section {
  padding: 2.5rem 0 4.5rem 0;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 4rem;
}

.hero-tag {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-transform: uppercase;
  color: var(--accent-cyan);
  background-color: var(--accent-cyan-glow);
  padding: 0.25rem 0.75rem;
  border-radius: 4px;
  display: inline-block;
  margin-bottom: 1.5rem;
  border: 1px solid rgba(6, 182, 212, 0.3);
}

.hero-title {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1.5rem;
  background: linear-gradient(to right, var(--text-main) 60%, var(--accent-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.02em;
}

.hero-description {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 760px;
  line-height: 1.6;
}

/* Service/Focus Area Section */
.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 2.5rem;
  font-family: var(--font-mono);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.section-title::before {
  content: '>';
  color: var(--accent-cyan);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-bottom: 5rem;
}

.service-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 2.5rem 2rem;
  transition: all var(--transition-speed) ease;
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(to bottom, var(--accent-cyan), var(--accent-indigo));
  opacity: 0;
  transition: opacity var(--transition-speed) ease;
}

.service-card:hover {
  border-color: var(--border-color-hover);
  transform: translateY(-4px);
  box-shadow: 0 10px 30px -15px rgba(0, 0, 0, 0.7);
}

.service-card:hover::before {
  opacity: 1;
}

.service-icon {
  font-family: var(--font-mono);
  color: var(--accent-cyan);
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
  font-weight: 500;
}

.service-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

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

/* Guides list on homepage & guides page */
.guides-container {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.guide-row {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 2.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--border-color);
}

.guide-row:last-child {
  border-bottom: none;
}

.guide-image-container {
  width: 100%;
  aspect-ratio: 16/10;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  background-color: var(--bg-card);
}

.guide-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-speed) ease;
}

.guide-row:hover .guide-image {
  transform: scale(1.05);
}

.guide-meta {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-cyan);
  margin-bottom: 0.75rem;
  display: flex;
  gap: 1rem;
}

.guide-info h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  font-weight: 700;
}

.guide-info h3 a {
  color: var(--text-main);
}

.guide-info h3 a:hover {
  color: var(--accent-cyan);
}

.guide-excerpt {
  color: var(--text-muted);
  margin-bottom: 1.25rem;
  font-size: 0.95rem;
}

.read-more-link {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.read-more-link::after {
  content: '->';
  transition: transform var(--transition-speed) ease;
}

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

/* Single page / Post layouts */
.post-header {
  margin-bottom: 3rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 2.5rem;
}

.post-meta-details {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent-cyan);
  margin-bottom: 1rem;
}

.post-title {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

.post-featured-image {
  width: 100%;
  max-height: 480px;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  margin-bottom: 3rem;
}

/* Markdown post content styling */
.post-content {
  font-size: 1.1rem;
  line-height: 1.75;
  color: #cbd5e1; /* slate-300 for readable page text */
  max-width: 760px;
}

.post-content p {
  margin-bottom: 1.75rem;
}

.post-content h2, .post-content h3, .post-content h4 {
  color: var(--text-main);
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  font-weight: 700;
}

.post-content h2 {
  font-size: 1.75rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.5rem;
}

.post-content h3 {
  font-size: 1.35rem;
}

.post-content ul, .post-content ol {
  margin-bottom: 1.75rem;
  padding-left: 1.5rem;
}

.post-content li {
  margin-bottom: 0.5rem;
}

.post-content blockquote {
  border-left: 4px solid var(--accent-cyan);
  background-color: var(--bg-card);
  padding: 1.5rem;
  margin: 2rem 0;
  border-radius: 0 8px 8px 0;
  font-style: italic;
  color: var(--text-main);
}

/* Contact form styling */
.contact-form-wrapper {
  margin-top: 3rem;
  max-width: 600px;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 2.5rem;
}

.contact-note,
.contact-followup {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.contact-note {
  margin-bottom: 1.5rem;
}

.contact-followup {
  margin-top: 1rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.form-input, .form-textarea {
  width: 100%;
  background-color: var(--bg-main);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-main);
  padding: 0.75rem 1rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  transition: all var(--transition-speed) ease;
}

.form-input:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.15);
}

.form-textarea {
  resize: vertical;
  min-height: 150px;
}

.form-submit-btn {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-indigo));
  color: #ffffff;
  border: none;
  border-radius: 6px;
  padding: 0.85rem 2rem;
  font-family: var(--font-mono);
  font-weight: 600;
  cursor: pointer;
  transition: opacity var(--transition-speed) ease;
  width: 100%;
  text-align: center;
  font-size: 0.95rem;
}

.form-submit-btn:hover {
  opacity: 0.9;
}

/* Footer */
.site-footer {
  background-color: #080b12;
  border-top: 1px solid var(--border-color);
  margin-top: auto;
}

.footer-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 4rem 2rem 3rem 2rem;
  display: grid;
  grid-template-columns: 2fr 1fr;
  row-gap: 3rem;
  column-gap: 2rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-logo {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--accent-cyan);
}

.footer-tagline {
  color: var(--text-muted);
  font-size: 0.9rem;
  max-width: 400px;
}

.footer-nav {
  display: flex;
  justify-content: flex-end;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.95rem;
}

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

.footer-copyright {
  grid-column: 1 / -1;
  border-top: 1px solid var(--border-color);
  padding-top: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-dark);
  text-align: center;
}

/* Responsive queries */
@media (max-width: 768px) {
  .header-inner {
    flex-direction: column;
    gap: 1.25rem;
    padding: 1.25rem 1rem;
  }
  
  .nav-links {
    gap: 1.5rem;
  }
  
  .site-main {
    padding: 2rem 1.25rem;
  }
  
  .hero-title {
    font-size: 2.25rem;
  }
  
  .guide-row {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .guide-image-container {
    max-width: 350px;
  }
  
  .footer-inner {
    grid-template-columns: 1fr;
    row-gap: 2rem;
  }
  
  .footer-nav {
    justify-content: flex-start;
  }
}