/* ==========================================================================
   ymnakatsu (@ymnakatsu) - Astrodynamics & Space Telemetry Specification
   Light Mode Cosmic Orbit System / Minimal Industrial Flight Deck
   ========================================================================== */

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

:root {
  --bg: #f2f5f9;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #e8eef5;
  
  --border-strong: #020617;
  --border-subtle: #cbd5e1;
  --border-space: rgba(2, 6, 23, 0.07);
  
  --text: #020617;
  --text-muted: #334155;
  --text-dim: #64748b;
  
  /* Space Trajectory Accents */
  --space-orange: #ff3c00;     /* Rocket Propulsion Safety Orange */
  --space-blue: #0052ff;       /* Orbital Trajectory Vector Blue */
  --space-solar: #f59e0b;      /* Photovoltaic Solar Array Gold */
  --space-cyan: #0284c7;       /* Ion Stream Cyan */
  
  --font-display: "Space Grotesk", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;
  
  --shadow-hard: 4px 4px 0px #020617;
  --shadow-hard-lg: 6px 6px 0px #020617;
  
  --radius: 0px !important;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  border-radius: 0 !important;
}

body {
  font-family: var(--font-mono);
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  
  /* Celestial Navigation Graticule & Subtle Star Dots */
  background-image: 
    linear-gradient(to right, var(--border-space) 1px, transparent 1px),
    linear-gradient(to bottom, var(--border-space) 1px, transparent 1px),
    radial-gradient(#020617 1px, transparent 1px);
  background-size: 40px 40px, 40px 40px, 120px 120px;
  background-position: 0 0, 0 0, 20px 20px;
}

/* ==========================================================================
   Full-Viewport Precision Orbital Mechanics System (SVG Canvas)
   ========================================================================== */
.orbital-system {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.orbital-canvas {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.9;
}

/* Smooth, On-Axis Orbital Rotations (Centered on Planetary Focal Core) */
.orbit-spin-cw {
  transform-origin: 0 0;
  animation: orbitRotateCW 90s linear infinite;
}

.orbit-spin-ccw {
  transform-origin: 0 0;
  animation: orbitRotateCCW 140s linear infinite;
}

.orbit-spin-slow {
  transform-origin: 0 0;
  animation: orbitRotateCW 180s linear infinite;
}

/* Specific Celestial Body & Satellite Orbital Revolutions */
.sat-orbit-leo {
  transform-origin: 0 0;
  animation: orbitRotateCW 22s linear infinite;
}

.planet-orbit-meo {
  transform-origin: 0 0;
  animation: orbitRotateCCW 65s linear infinite;
}

.moon-sub-orbit {
  transform-origin: 0 0;
  animation: orbitRotateCW 9s linear infinite;
}

.planet-orbit-outer {
  transform-origin: 0 0;
  animation: orbitRotateCW 140s linear infinite;
}

.sat-orbit-geo {
  transform-origin: 0 0;
  animation: orbitRotateCCW 100s linear infinite;
}

.moon-sub-orbit-reverse {
  transform-origin: 0 0;
  animation: orbitRotateCCW 35s linear infinite;
}



@keyframes orbitRotateCW {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes orbitRotateCCW {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(-360deg);
  }
}

a {
  color: var(--text);
  text-decoration: none;
  border-bottom: 2px solid var(--space-orange);
  transition: all 0.1s ease;
  font-weight: 700;
}

a:hover {
  background-color: var(--space-orange);
  color: #ffffff;
  border-bottom-color: var(--space-orange);
}

.container {
  max-width: 880px;
  margin: 0 auto;
  padding: 3.5rem 1.5rem 6.5rem;
  position: relative;
  z-index: 1;
}

/* ==========================================================================
   Top Navigation / System Header
   ========================================================================== */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  margin-bottom: 3.5rem;
  background: var(--bg-surface);
  border: 2px solid var(--border-strong);
  box-shadow: var(--shadow-hard);
  position: relative;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.header-label {
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-surface-elevated);
  color: var(--text);
  border: 2px solid var(--border-strong);
  padding: 0.45rem 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  transition: all 0.1s ease;
  border-bottom: 2px solid var(--border-strong) !important;
}

.lang-switch:hover {
  background: var(--space-orange);
  color: #ffffff;
  border-color: var(--border-strong);
  transform: translate(1px, 1px);
}

.github-link {
  display: inline-block;
  background: var(--border-strong);
  color: #ffffff !important;
  border: 2px solid var(--border-strong);
  padding: 0.45rem 1.15rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  transition: all 0.1s ease;
  border-bottom: 2px solid var(--border-strong) !important;
}

.github-link:hover {
  background: var(--space-blue) !important;
  border-color: var(--border-strong) !important;
  color: #ffffff !important;
  transform: translate(2px, 2px);
  box-shadow: none;
}

/* ==========================================================================
   Profile Hero - Chief Architect Dossier
   ========================================================================== */
.profile-hero {
  margin-bottom: 4rem;
  border: 2px solid var(--border-strong);
  background: var(--bg-surface);
  padding: 2.75rem;
  position: relative;
  box-shadow: var(--shadow-hard-lg);
}

.profile-row {
  margin-bottom: 1.5rem;
}

.profile-name {
  font-family: var(--font-display);
  font-size: 3.2rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  text-transform: uppercase;
}

.profile-handle {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  margin-top: 0.5rem;
  color: var(--space-blue);
  letter-spacing: 0.06em;
}

.profile-handle a {
  border-bottom: 2px solid var(--space-blue);
}

.profile-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 1.5rem;
}

.role-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: #000000;
  background: var(--space-solar);
  border: 2px solid var(--border-strong);
  padding: 0.35rem 0.85rem;
  box-shadow: 2px 2px 0px var(--border-strong);
}

.meta-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  background: var(--bg-surface-elevated);
  border: 1.5px solid var(--border-strong);
  padding: 0.35rem 0.75rem;
  letter-spacing: 0.04em;
}

.bio {
  color: var(--text);
  font-size: 1.02rem;
  line-height: 1.95;
  border-top: 2px solid var(--border-strong);
  padding-top: 1.5rem;
  font-weight: 500;
  position: relative;
}

/* ==========================================================================
   Sections & Sharp Architectural H2 Headers
   ========================================================================== */
.section {
  margin-bottom: 4.5rem;
}

/* Clean, sharp, unpretentious Section Header */
.section-title-wrap {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 1.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--border-strong);
  position: relative;
}

.section-title-wrap::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 60px;
  height: 2px;
  background: var(--space-orange);
}

.section-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.section-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--space-blue);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-strong);
  padding: 0.15rem 0.5rem;
  letter-spacing: 0.12em;
}

.section-subtitle {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

/* Projects Grid - Spacecraft Payload Modules */
.projects-grid {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.project-card {
  background: var(--bg-surface);
  border: 2px solid var(--border-strong);
  padding: 2.25rem;
  position: relative;
  box-shadow: var(--shadow-hard);
  transition: all 0.12s ease;
}

.project-card:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-hard-lg);
  border-color: var(--border-strong);
}

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.25rem;
  gap: 1rem;
  border-bottom: 1.5px dashed var(--border-subtle);
  padding-bottom: 1.25rem;
}

.project-name {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  text-transform: uppercase;
}

.project-type {
  font-size: 0.78rem;
  color: var(--space-blue);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  display: block;
  margin-top: 0.3rem;
}

.pill {
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #000000;
  border: 2px solid var(--border-strong);
  padding: 0.3rem 0.75rem;
  background: var(--space-solar);
  box-shadow: 2px 2px 0px #000000;
}

.project-desc {
  font-size: 0.96rem;
  color: var(--text);
  line-height: 1.9;
  margin-bottom: 1.75rem;
  font-weight: 500;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  border-top: 2px solid var(--border-strong);
  padding-top: 1.25rem;
}

.tech-tag {
  background: var(--bg-surface-elevated);
  color: var(--text);
  font-size: 0.75rem;
  font-weight: 800;
  padding: 0.35rem 0.75rem;
  border: 1.5px solid var(--border-strong);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  transition: all 0.1s ease;
}

.tech-tag:hover {
  background: var(--space-blue);
  color: #ffffff;
  border-color: var(--border-strong);
}

/* Tech Grid - Avionics Subsystem Rack */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.tech-card {
  background: var(--bg-surface);
  border: 2px solid var(--border-strong);
  padding: 1.75rem;
  position: relative;
  box-shadow: var(--shadow-hard);
  transition: all 0.12s ease;
}

.tech-card:hover {
  transform: translate(-1px, -1px);
}

.tech-card.span-full {
  grid-column: 1 / -1;
}

.tech-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--border-strong);
}

.tech-card-header h3 {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text);
  flex-grow: 1;
}

.tech-card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.tech-card li {
  font-size: 0.92rem;
  color: var(--text);
  display: flex;
  align-items: baseline;
  line-height: 1.5;
  font-weight: 500;
}

.tech-card li::before {
  content: "―";
  color: var(--space-blue);
  font-size: 0.75rem;
  font-weight: 800;
  margin-right: 0.65rem;
  flex-shrink: 0;
}

.tech-card li strong {
  color: var(--text);
  font-weight: 800;
}

.tech-card ul.columns-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem 1.5rem;
}

/* Footer - Minimal System Sign-off */
.footer {
  margin-top: 5rem;
  padding: 2.5rem 0;
  border-top: 2px solid var(--border-strong);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-muted);
  position: relative;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-content a {
  border-bottom: 2px solid var(--border-strong);
  color: var(--text);
}

.footer-content a:hover {
  background: var(--space-orange);
  color: #ffffff;
  border-color: var(--space-orange);
}

.footer-note {
  font-size: 0.75rem;
  color: var(--text-dim);
}

@media (max-width: 700px) {
  .container {
    padding: 2rem 1rem 4rem;
  }
  .tech-grid {
    grid-template-columns: 1fr;
  }
  .tech-card ul.columns-2 {
    grid-template-columns: 1fr;
  }
  .header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.25rem 1rem;
  }
  .header-actions {
    width: 100%;
  }
  .profile-hero {
    padding: 1.75rem 1.25rem;
  }
  .profile-name {
    font-size: 2.25rem;
  }
  .section-title-wrap {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.35rem;
  }
  .section-title {
    font-size: 1.25rem;
  }
  .footer-content {
    flex-direction: column;
    text-align: left;
  }
}