/* ==========================================================================
   ALBERTO CAMILLO - COOL JAZZ TECHNICAL DESIGN SYSTEM
   Concept: Mid-Century Jazz Record Sleeve meets Technical Documentation
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,400;0,9..144,600;0,9..144,700;0,9..144,800;1,9..144,400;1,9..144,600&family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600;700&display=swap');

:root {
  /* Light Mode (Warm Unbleached Paper & Deep Ink) */
  --bg-paper: #F7F5F0;
  --bg-card: #EFECE5;
  --bg-card-hover: #E6E2D8;
  --bg-surface: #E8E4DC;
  
  --text-ink: #12131A;
  --text-muted: #545766;
  --text-dim: #7B7E8C;

  --accent-brass: #C59B27;
  --accent-brass-light: rgba(197, 155, 39, 0.12);
  --accent-brass-hover: #A6811E;
  
  --border-line: #E2DFD7;
  --border-strong: #D1CDC2;
  --border-dark: #12131A;

  --font-editorial: 'Fraunces', Georgia, serif;
  --font-mono: 'JetBrains Mono', monospace;
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;

  --transition-speed: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="dark"] {
  /* Dark Mode (Deep Midnight Ink & Warm Cream) */
  --bg-paper: #101117;
  --bg-card: #181A24;
  --bg-card-hover: #212330;
  --bg-surface: #222431;

  --text-ink: #F7F5F0;
  --text-muted: #9DA1B2;
  --text-dim: #656878;

  --accent-brass: #D4AF37;
  --accent-brass-light: rgba(212, 175, 55, 0.15);
  --accent-brass-hover: #E5BE48;

  --border-line: #242634;
  --border-strong: #373A4F;
  --border-dark: #F7F5F0;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-paper);
  color: var(--text-ink);
  transition: background-color var(--transition-speed), color var(--transition-speed);
}

body {
  font-family: var(--font-sans);
  line-height: 1.6;
  background-color: var(--bg-paper);
  color: var(--text-ink);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Structural Technical Gridlines Backdrop */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: 
    linear-gradient(to right, var(--border-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--border-line) 1px, transparent 1px);
  background-size: 80px 80px;
  pointer-events: none;
  opacity: 0.5;
  z-index: 0;
}

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 2rem;
  position: relative;
  z-index: 1;
}

/* Editorial & Technical Typography */
h1, h2, h3, h4 {
  font-family: var(--font-editorial);
  font-weight: 700;
  color: var(--text-ink);
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.font-mono {
  font-family: var(--font-mono);
}

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

/* --------------------------------------------------------------------------
   Top Catalog Bar / Promos
   -------------------------------------------------------------------------- */
.catalog-bar {
  background: var(--text-ink);
  color: var(--bg-paper);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 0.5rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-strong);
  position: relative;
  z-index: 100;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.catalog-left {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.catalog-tag {
  color: var(--accent-brass);
  font-weight: 700;
}

.promo-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.promo-link {
  color: var(--bg-paper);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: opacity var(--transition-speed);
}

.promo-link:hover {
  color: var(--accent-brass);
}

/* --------------------------------------------------------------------------
   Site Header & Syncopated Navigation
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: var(--bg-paper);
  border-bottom: 2px solid var(--text-ink);
  transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.5rem;
}

.brand-stamp {
  font-family: var(--font-editorial);
  font-size: 1.35rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  letter-spacing: -0.02em;
}

.brand-stamp .catalog-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.15rem 0.45rem;
  background: var(--accent-brass-light);
  color: var(--accent-brass);
  border: 1px solid var(--accent-brass);
  border-radius: 2px;
  font-weight: 600;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-item {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 0;
  position: relative;
}

.nav-item .index {
  color: var(--accent-brass);
  font-weight: 700;
}

.nav-item:hover, .nav-item.active {
  color: var(--text-ink);
}

.nav-item.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--accent-brass);
}

/* Theme Toggle Button */
.theme-toggle-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  color: var(--text-ink);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 0.4rem 0.85rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  text-transform: uppercase;
  transition: all var(--transition-speed);
}

.theme-toggle-btn:hover {
  background: var(--text-ink);
  color: var(--bg-paper);
}

/* Mobile Nav Button */
.mobile-nav-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-ink);
  font-size: 1.4rem;
  cursor: pointer;
}

/* --------------------------------------------------------------------------
   Hero Section - Asymmetrical Record Sleeve & Live Terminal
   -------------------------------------------------------------------------- */
.hero-section {
  padding: 4.5rem 0 3.5rem;
  border-bottom: 1px solid var(--border-line);
}

.hero-layout {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3.5rem;
  align-items: start;
}

.hero-main {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.hero-meta-strip {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-brass);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.hero-meta-strip::before {
  content: '■';
  font-size: 0.6rem;
}

.hero-headline {
  font-size: clamp(2.5rem, 5.5vw, 4.2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
}

.hero-subhead {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--text-muted);
  font-weight: 500;
  border-left: 3px solid var(--accent-brass);
  padding-left: 1rem;
}

.hero-description {
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 650px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}

/* Technical Buttons */
.btn-jazz-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--text-ink);
  color: var(--bg-paper);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  padding: 0.85rem 1.6rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border: 1px solid var(--text-ink);
  transition: all var(--transition-speed);
}

.btn-jazz-primary:hover {
  background: var(--accent-brass);
  color: #12131A;
  border-color: var(--accent-brass);
  transform: translateY(-2px);
}

.btn-jazz-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: transparent;
  color: var(--text-ink);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  padding: 0.85rem 1.6rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border: 1px solid var(--border-strong);
  transition: all var(--transition-speed);
}

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

/* Live Terminal Card */
.terminal-card {
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  padding: 1.5rem;
  font-family: var(--font-mono);
  box-shadow: 6px 6px 0px var(--border-line);
  position: relative;
}

.terminal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 0.75rem;
  border-bottom: 1px dashed var(--border-strong);
  margin-bottom: 1rem;
  font-size: 0.75rem;
  color: var(--text-dim);
  text-transform: uppercase;
}

.terminal-status-light {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: #10b981;
  font-weight: 700;
}

.terminal-status-light::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 8px #10b981;
}

.terminal-rows {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  font-size: 0.82rem;
}

.term-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.term-key {
  color: var(--text-dim);
  font-weight: 500;
}

.term-val {
  color: var(--text-ink);
  font-weight: 600;
}

.term-val.highlight {
  color: var(--accent-brass);
}

/* Frequency Lines Animation */
.freq-bars {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 20px;
}

.freq-bar {
  width: 3px;
  background: var(--accent-brass);
  animation: pulseBar 1.2s ease-in-out infinite alternate;
}

.freq-bar:nth-child(1) { height: 40%; animation-delay: 0.1s; }
.freq-bar:nth-child(2) { height: 80%; animation-delay: 0.3s; }
.freq-bar:nth-child(3) { height: 60%; animation-delay: 0.2s; }
.freq-bar:nth-child(4) { height: 100%; animation-delay: 0.4s; }
.freq-bar:nth-child(5) { height: 50%; animation-delay: 0.15s; }

@keyframes pulseBar {
  0% { transform: scaleY(0.4); }
  100% { transform: scaleY(1); }
}

/* --------------------------------------------------------------------------
   Section Common Layouts
   -------------------------------------------------------------------------- */
.section-wrapper {
  padding: 4.5rem 0;
  border-bottom: 1px solid var(--border-line);
}

.section-head-syncopated {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 3rem;
  border-bottom: 2px solid var(--text-ink);
  padding-bottom: 0.75rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.section-title-editorial {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 800;
  display: flex;
  align-items: baseline;
  gap: 1rem;
}

.section-title-editorial .index-stamp {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--accent-brass);
  font-weight: 700;
}

.section-subtext {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Technical Spec Card */
.spec-card {
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  padding: 2rem;
  transition: all var(--transition-speed);
  position: relative;
}

.spec-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-brass);
}

/* --------------------------------------------------------------------------
   Featured Releases (Projects)
   -------------------------------------------------------------------------- */
.releases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.release-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-dim);
  border-bottom: 1px solid var(--border-line);
  padding-bottom: 0.75rem;
  margin-bottom: 1.25rem;
}

.release-cat-num {
  color: var(--accent-brass);
  font-weight: 700;
}

.release-title {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.release-role {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

.release-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.release-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1.5rem;
}

.tech-tag-mono {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  color: var(--text-ink);
  text-transform: uppercase;
}

.release-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  border-top: 1px dashed var(--border-strong);
  font-family: var(--font-mono);
  font-size: 0.82rem;
}

.release-link {
  font-weight: 700;
  color: var(--accent-brass);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.release-link:hover {
  color: var(--text-ink);
  text-decoration: underline;
}

/* --------------------------------------------------------------------------
   Awards Ledger Index (GovHack, Codeathon)
   -------------------------------------------------------------------------- */
.ledger-list {
  display: flex;
  flex-direction: column;
}

.ledger-row {
  display: grid;
  grid-template-columns: 80px 140px 1fr 120px;
  gap: 1.5rem;
  align-items: center;
  padding: 1.25rem 1rem;
  border-bottom: 1px solid var(--border-line);
  transition: background var(--transition-speed);
}

.ledger-row:hover {
  background: var(--bg-card);
}

.ledger-track {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-brass);
  font-weight: 700;
}

.ledger-date {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-dim);
}

.ledger-title {
  font-size: 1.1rem;
  font-weight: 600;
  font-family: var(--font-sans);
}

.ledger-title a:hover {
  color: var(--accent-brass);
}

.ledger-link {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent-brass);
  text-align: right;
}

/* --------------------------------------------------------------------------
   Work Experience Technical Log
   -------------------------------------------------------------------------- */
.experience-log-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.log-entry {
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-left: 4px solid var(--accent-brass);
  padding: 1.75rem;
}

.log-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.log-role {
  font-size: 1.35rem;
  font-weight: 700;
}

.log-company {
  font-family: var(--font-mono);
  color: var(--accent-brass);
  font-weight: 700;
}

.log-date {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-dim);
}

.log-loc {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-dim);
  margin-bottom: 1rem;
  text-transform: uppercase;
}

.log-details {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.65;
  margin-bottom: 1.25rem;
}

/* --------------------------------------------------------------------------
   Skills Matrix Diagnostic Tags
   -------------------------------------------------------------------------- */
.skills-matrix {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.skill-box {
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  padding: 1.75rem;
}

.skill-box-title {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--accent-brass);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-line);
}

.skill-pills-container {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.skill-diagnostic-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  padding: 0.4rem 0.6rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-line);
}

.skill-label {
  font-weight: 600;
  color: var(--text-ink);
}

.skill-status {
  font-size: 0.72rem;
  color: var(--accent-brass);
  font-weight: 700;
}

/* --------------------------------------------------------------------------
   Contact Console & Footer
   -------------------------------------------------------------------------- */
.contact-console {
  background: var(--text-ink);
  color: var(--bg-paper);
  padding: 4rem 2rem;
  border: 1px solid var(--text-ink);
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.contact-headline {
  color: var(--bg-paper);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  margin-bottom: 1rem;
}

.contact-sub {
  font-family: var(--font-mono);
  color: var(--accent-brass);
  font-size: 0.9rem;
}

.contact-links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
}

.contact-btn-mono {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 1.2rem;
  background: var(--bg-surface);
  color: var(--text-ink);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  border: 1px solid var(--border-strong);
  text-transform: uppercase;
  transition: all var(--transition-speed);
}

.contact-btn-mono:hover {
  background: var(--accent-brass);
  color: #12131A;
  border-color: var(--accent-brass);
}

.site-footer {
  padding: 2rem 0;
  background: var(--bg-paper);
  border-top: 1px solid var(--border-line);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-dim);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

/* --------------------------------------------------------------------------
   Responsive Media Queries
   -------------------------------------------------------------------------- */
@media (max-width: 900px) {
  .hero-layout {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .ledger-row {
    grid-template-columns: 60px 100px 1fr;
  }

  .ledger-link {
    display: none;
  }

  .contact-layout {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }

  .mobile-nav-toggle {
    display: block;
  }

  .catalog-bar {
    flex-direction: column;
    gap: 0.4rem;
    align-items: flex-start;
  }
}

/* --------------------------------------------------------------------------
   Accessibility (a11y) & WCAG 2.1 AA Enhancements
   -------------------------------------------------------------------------- */

/* Skip Link for Keyboard Navigation */
.skip-link {
  position: absolute;
  top: -1000px;
  left: 1rem;
  background: var(--accent-brass);
  color: #12131A;
  padding: 0.75rem 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  border: 2px solid var(--text-ink);
  z-index: 1000;
  text-decoration: none;
  border-radius: 2px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
  transition: top var(--transition-speed);
}

.skip-link:focus,
.skip-link:focus-visible {
  top: 0.75rem;
  outline: 3px solid var(--text-ink);
  outline-offset: 2px;
}

/* High-Contrast Visible Keyboard Focus Indicators */
:focus-visible {
  outline: 3px solid var(--accent-brass);
  outline-offset: 3px;
}

button:focus-visible,
a:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--accent-brass);
  outline-offset: 3px;
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto !important;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}