@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  /* Matte Professional Color Palette */
  --bg-primary: #0b0d10;
  --bg-secondary: #12161b;
  --bg-tertiary: #181d24;
  --border-light: #222832;
  --border-focus: #4b5563;
  
  --accent: #3b82f6; /* Technical Blue */
  --accent-muted: rgba(59, 130, 246, 0.1);
  
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  --header-height: 70px;
  --container-max-width: 1100px;
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  scrollbar-width: thin;
  scrollbar-color: var(--border-light) var(--bg-primary);
}

/* Custom Minimalist Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--border-light);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 32px;
}

section {
  padding: 60px 0 80px 0;
  min-height: calc(100vh - var(--header-height) - 100px);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* Section Headers */
.section-header {
  margin-bottom: 50px;
  max-width: 650px;
}

.section-label {
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 10px;
  display: block;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.2;
}

.section-description {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.6;
}

/* Navigation Header */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 100;
  background: rgba(11, 13, 16, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-light);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
}

.logo {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.logo-dot {
  color: var(--accent);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 24px;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 6px 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
}

.nav-cta {
  border: 1px solid var(--border-light);
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  background: var(--bg-secondary);
}

.nav-cta:hover {
  background: var(--text-primary);
  color: var(--bg-primary);
  border-color: var(--text-primary);
}

.mobile-nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
}

/* Custom Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition);
}

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

.btn-primary:hover {
  background: transparent;
  color: var(--text-primary);
}

.btn-secondary {
  background: transparent;
  border: 1px solid var(--border-light);
  color: var(--text-primary);
}

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

/* Hero Section */
.hero {
  min-height: 80vh;
  display: flex;
  align-items: center;
  padding-top: calc(var(--header-height) + 60px);
}

.hero-layout {
  max-width: 800px;
}

.hero-subtitle {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.95rem;
  font-weight: 500;
  margin-bottom: 16px;
  display: block;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.hero-description {
  font-size: 1.2rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  gap: 16px;
}

/* About / Credentials Section Grid */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 48px;
  align-items: start;
}

.about-summary {
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  padding: 36px;
}

.about-bio p {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-bottom: 20px;
  line-height: 1.7;
}

.about-bio p:last-child {
  margin-bottom: 0;
}

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 30px;
  border-top: 1px solid var(--border-light);
  padding-top: 24px;
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-value {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text-primary);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* Experience / Timeline Section */
.timeline {
  display: block;
  scrollbar-width: thin;
  scrollbar-color: var(--border-light) var(--bg-primary);
}

.timeline-item {
  position: relative;
  padding-left: 24px;
  border-left: 2px solid var(--border-light);
  margin-bottom: 32px;
}

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

.timeline-item::after {
  content: '';
  position: absolute;
  left: -6px;
  top: 8px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 2px solid var(--text-secondary);
}

.timeline-item.military::after {
  border-color: var(--accent);
}

.timeline-date {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 6px;
  font-weight: 500;
}

.timeline-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.timeline-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Licenses & Certifications Section */
.certifications-section {
  background-color: var(--bg-secondary);
}

.certs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.cert-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  padding: 24px;
  transition: var(--transition);
}

.cert-card:hover {
  border-color: var(--border-focus);
}

.cert-header {
  display: flex;
  justify-content: space-between;
  align-items: start;
  margin-bottom: 12px;
}

.cert-issuer {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  text-transform: uppercase;
}

.cert-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.cert-date {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.cert-id {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Expertise / Capabilities Grid */
.expertise-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.expertise-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  padding: 28px;
  transition: var(--transition);
}

.expertise-card:hover {
  border-color: var(--border-focus);
}

.expertise-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.expertise-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Interactive SQL Tools (Clean Layout) */
.tools-layout {
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  padding: 40px;
}

.tools-nav {
  display: flex;
  gap: 12px;
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 16px;
  margin-bottom: 32px;
}

.tool-tab-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 600;
  cursor: pointer;
  padding: 8px 16px;
  border-radius: 6px;
  transition: var(--transition);
}

.tool-tab-btn:hover {
  color: var(--text-primary);
}

.tool-tab-btn.active {
  background: var(--bg-primary);
  color: var(--text-primary);
  border: 1px solid var(--border-light);
}

.tool-pane {
  display: none;
}

.tool-pane.active {
  display: block;
}

/* Fragmentation Tool Form & Code */
.frag-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 36px;
}

.frag-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.input-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.input-group input, .input-group select {
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: 6px;
  padding: 10px 14px;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.9rem;
  outline: none;
}

.input-group input:focus, .input-group select:focus {
  border-color: var(--border-focus);
}

.code-container {
  background: #07090b;
  border: 1px solid var(--border-light);
  border-radius: 8px;
  overflow: hidden;
}

.code-header {
  background: rgba(255, 255, 255, 0.02);
  padding: 8px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-light);
}

.code-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.code-copy-btn {
  background: none;
  border: 1px solid var(--border-light);
  color: var(--text-secondary);
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  cursor: pointer;
  transition: var(--transition);
}

.code-copy-btn:hover {
  color: var(--text-primary);
  border-color: var(--text-secondary);
}

.code-container pre {
  padding: 20px;
  margin: 0;
  overflow-x: auto;
}

.code-container code {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: #c9d1d9;
  line-height: 1.5;
}

/* Shortcut Tool Layout */
.shortcut-layout {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.shortcut-search-bar {
  max-width: 400px;
  position: relative;
}

.shortcut-search-input {
  width: 100%;
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: 6px;
  padding: 10px 14px 10px 36px;
  color: var(--text-primary);
  font-size: 0.9rem;
  outline: none;
}

.shortcut-search-input:focus {
  border-color: var(--border-focus);
}

.search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  width: 16px;
  height: 16px;
}

.shortcuts-table {
  width: 100%;
  border-collapse: collapse;
}

.shortcuts-table th, .shortcuts-table td {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-light);
}

.shortcuts-table th {
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--bg-primary);
}

.shortcuts-table kbd {
  font-family: var(--font-mono);
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.8rem;
  color: var(--accent);
}

/* Blog & Knowledge Base Section */
.blog-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 36px;
  flex-wrap: wrap;
  gap: 16px;
}

.blog-filters {
  display: flex;
  list-style: none;
  gap: 8px;
}

.blog-filter-btn {
  background: none;
  border: 1px solid var(--border-light);
  color: var(--text-secondary);
  padding: 6px 14px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.blog-filter-btn:hover {
  color: var(--text-primary);
  border-color: var(--text-secondary);
}

.blog-filter-btn.active {
  background: var(--text-primary);
  color: var(--bg-primary);
  border-color: var(--text-primary);
}

.blog-search-bar {
  max-width: 280px;
  position: relative;
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.blog-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}

.blog-card:hover {
  border-color: var(--border-focus);
}

.blog-card-meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  margin-bottom: 12px;
  text-transform: uppercase;
}

.blog-card-title {
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 12px;
}

.blog-card-excerpt {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.5;
  margin-bottom: 24px;
  flex-grow: 1;
}

.blog-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border-light);
  padding-top: 16px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.blog-card-read {
  color: var(--text-primary);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 4px;
}

/* Modal - Minimal Reader */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(11, 13, 16, 0.85);
  backdrop-filter: blur(4px);
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-container {
  width: 90%;
  max-width: 720px;
  max-height: 80vh;
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.modal-header {
  padding: 24px 32px;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  justify-content: space-between;
  align-items: start;
}

.modal-cat {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 6px;
  display: block;
}

.modal-title {
  font-size: 1.5rem;
  font-weight: 800;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 1.2rem;
}

.modal-close:hover {
  color: var(--text-primary);
}

.modal-body {
  padding: 32px;
  overflow-y: auto;
  flex-grow: 1;
  scrollbar-width: thin;
  scrollbar-color: var(--border-light) var(--bg-primary);
}

.modal-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.modal-content p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  font-size: 0.95rem;
  line-height: 1.65;
}

.modal-content code {
  font-family: var(--font-mono);
  background: var(--bg-primary);
  padding: 2px 4px;
  border-radius: 4px;
  font-size: 0.85rem;
  color: var(--text-primary);
}

.modal-content pre {
  background: #07090b;
  border: 1px solid var(--border-light);
  padding: 16px;
  border-radius: 6px;
  overflow-x: auto;
  margin: 20px 0;
}

.modal-content pre code {
  color: #c9d1d9;
  background: none;
  padding: 0;
}

/* Contact Section (Clean Inputs) */
.contact-layout {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 48px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-row {
  display: flex;
  align-items: center;
  gap: 16px;
}

.contact-icon {
  width: 44px;
  height: 44px;
  border-radius: 6px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}

.contact-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.contact-value {
  font-weight: 600;
  font-size: 0.95rem;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-form input, .contact-form textarea {
  width: 100%;
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: 6px;
  padding: 12px 16px;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.9rem;
  outline: none;
  transition: var(--transition);
}

.contact-form input:focus, .contact-form textarea:focus {
  border-color: var(--border-focus);
}

.contact-form textarea {
  min-height: 140px;
  resize: vertical;
}

/* Footer */
footer {
  padding: 40px 0;
  background: var(--bg-primary);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-layout {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-nav {
  display: flex;
  list-style: none;
  gap: 16px;
}

/* Responsive */
@media (max-width: 900px) {
  .about-grid, .frag-grid, .contact-layout {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  
  .hero-title {
    font-size: 2.75rem;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }
  
  .mobile-nav-toggle {
    display: block;
  }
  
  .hero-title {
    font-size: 2.25rem;
  }
}