/* ============================================
   TERRA — Design System & Styles
   W40K × Pixel Art Personal Homepage
   ============================================ */

/* --- Google Fonts (loaded in HTML) --- */

/* ============================================
   1. CSS CUSTOM PROPERTIES (Design Tokens)
   ============================================ */
:root {
  /* Primary Colors */
  --imperial-gold: #C5A052;
  --blood-red: #8B0000;
  --void-black: #0A0A0F;
  --warp-black: #12121A;
  --bone-white: #D4C5A9;

  /* Secondary / Accent Colors */
  --mechanicus-teal: #2A9D8F;
  --plasma-blue: #4A90D9;
  --corruption-purple: #6B3FA0;
  --parchment: #1A1A24;
  --ash-grey: #6B6B7B;

  /* Glow / Effect Colors */
  --gold-glow: rgba(197, 160, 82, 0.3);
  --gold-glow-strong: rgba(197, 160, 82, 0.6);
  --red-glow: rgba(139, 0, 0, 0.4);
  --teal-glow: rgba(42, 157, 143, 0.3);

  /* Spacing Scale (8px rhythm) */
  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 16px;
  --sp-4: 24px;
  --sp-5: 32px;
  --sp-6: 48px;
  --sp-7: 64px;

  /* Typography */
  --font-primary: 'Silkscreen', cursive;
  --font-fallback: 'Press Start 2P', monospace;

  /* Layout */
  --max-width: 1200px;
  --gutter: 24px;
}


/* ============================================
   2. RESET & BASE
   ============================================ */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 14px;
  image-rendering: pixelated;
}

body {
  font-family: var(--font-primary), var(--font-fallback), monospace;
  background-color: var(--void-black);
  color: var(--bone-white);
  text-transform: uppercase;
  letter-spacing: 1px;
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

a {
  color: var(--mechanicus-teal);
  text-decoration: none;
  transition: color 0.2s;
}

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

::selection {
  background: var(--imperial-gold);
  color: var(--void-black);
}


/* ============================================
   3. SCANLINE OVERLAY
   ============================================ */
.scanlines::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: repeating-linear-gradient(transparent,
      transparent 2px,
      rgba(0, 0, 0, 0.04) 2px,
      rgba(0, 0, 0, 0.04) 4px);
  pointer-events: none;
  z-index: 9998;
}


/* ============================================
   4. VIGNETTE OVERLAY
   ============================================ */
.vignette::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(ellipse at center,
      transparent 50%,
      rgba(0, 0, 0, 0.5) 100%);
  pointer-events: none;
  z-index: 9997;
}


/* ============================================
   5. PARTICLE CANVAS
   ============================================ */
#particle-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}


/* ============================================
   6. NAVIGATION BAR
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 9000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-3) var(--sp-4);
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--imperial-gold);
  transition: background 0.3s;
}

.nav--scrolled {
  background: rgba(10, 10, 15, 0.95);
}

.nav__logo {
  font-size: 20px;
  font-weight: 700;
  color: var(--imperial-gold);
  letter-spacing: 4px;
  text-shadow: 0 0 10px var(--gold-glow);
  cursor: default;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 0;
  list-style: none;
}

.nav__link {
  position: relative;
  padding: var(--sp-2) var(--sp-3);
  color: var(--bone-white);
  font-size: 12px;
  letter-spacing: 2px;
  transition: color 0.2s;
}

.nav__link:hover {
  color: var(--imperial-gold);
}

/* Pixel underline on hover */
.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: var(--sp-3);
  width: 0;
  height: 2px;
  background: var(--imperial-gold);
  transition: width 0.3s steps(8);
}

.nav__link:hover::after {
  width: calc(100% - var(--sp-3) * 2);
}

/* Pixel dividers between links */
.nav__divider {
  width: 2px;
  height: 16px;
  background: var(--ash-grey);
  opacity: 0.4;
}


/* ============================================
   7. HERO SECTION
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--sp-7) var(--sp-4);
  z-index: 2;
}

.hero__title {
  font-size: 64px;
  font-weight: 400;
  color: var(--imperial-gold);
  letter-spacing: 12px;
  text-shadow:
    0 0 20px var(--gold-glow-strong),
    0 0 40px var(--gold-glow),
    0 0 80px rgba(197, 160, 82, 0.15);
  margin-bottom: var(--sp-4);
  /* Typewriter: initially hidden, filled by JS */
  overflow: hidden;
  white-space: nowrap;
  border-right: 3px solid var(--imperial-gold);
  animation: blink-cursor 0.8s steps(1) infinite;
  min-height: 77px;
  /* prevent layout shift */
}

.hero__title--complete {
  border-right-color: transparent;
  animation: none;
}

@keyframes blink-cursor {

  0%,
  100% {
    border-right-color: var(--imperial-gold);
  }

  50% {
    border-right-color: transparent;
  }
}

.hero__subtitle {
  font-size: 18px;
  color: var(--bone-white);
  letter-spacing: 4px;
  margin-bottom: var(--sp-3);
  opacity: 0;
  transform: translateY(10px);
  animation: fade-in-up 0.8s ease forwards;
  animation-delay: 2.2s;
}

.hero__tagline {
  font-size: 12px;
  color: var(--ash-grey);
  letter-spacing: 2px;
  font-style: italic;
  text-transform: none;
  opacity: 0;
  transform: translateY(10px);
  animation: fade-in-up 0.8s ease forwards;
  animation-delay: 2.8s;
}

.hero__scroll-indicator {
  position: absolute;
  bottom: var(--sp-5);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-2);
  opacity: 0;
  animation: fade-in-up 0.8s ease forwards, float-bounce 2s ease-in-out infinite;
  animation-delay: 3.4s, 3.4s;
}

.hero__scroll-text {
  font-size: 10px;
  color: var(--ash-grey);
  letter-spacing: 2px;
}

.hero__scroll-arrow {
  width: 16px;
  height: 16px;
  border-right: 2px solid var(--imperial-gold);
  border-bottom: 2px solid var(--imperial-gold);
  transform: rotate(45deg);
}

@keyframes float-bounce {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(8px);
  }
}


/* ============================================
   8. SECTION COMMON
   ============================================ */
.section {
  position: relative;
  z-index: 2;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--sp-7) var(--sp-4);
}

.section__header {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  margin-bottom: var(--sp-6);
}

.section__line {
  flex: 1;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--imperial-gold), transparent);
}

.section__title {
  font-size: 24px;
  color: var(--imperial-gold);
  letter-spacing: 4px;
  text-shadow: 0 0 10px var(--gold-glow);
  white-space: nowrap;
}


/* ============================================
   9. PROJECT CARDS
   ============================================ */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-4);
}

.project-card {
  background: var(--warp-black);
  border: 2px solid var(--imperial-gold);
  padding: var(--sp-5);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  transition: transform 0.3s, box-shadow 0.3s;
  position: relative;
  overflow: hidden;
  /* Scroll reveal */
  opacity: 0;
  transform: translateY(20px);
}

.project-card--visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s ease, transform 0.6s ease, box-shadow 0.3s;
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow:
    0 0 20px var(--gold-glow),
    0 0 40px var(--gold-glow),
    inset 0 0 20px rgba(197, 160, 82, 0.05);
}

/* Corner decorations */
.project-card::before,
.project-card::after {
  content: '';
  position: absolute;
  width: 12px;
  height: 12px;
  border-color: var(--imperial-gold);
  border-style: solid;
  transition: border-color 0.3s;
}

.project-card::before {
  top: 6px;
  left: 6px;
  border-width: 2px 0 0 2px;
}

.project-card::after {
  bottom: 6px;
  right: 6px;
  border-width: 0 2px 2px 0;
}

.project-card:hover::before,
.project-card:hover::after {
  border-color: var(--gold-glow-strong);
}

.project-card__icon {
  width: 96px;
  height: 96px;
  margin-bottom: var(--sp-4);
  image-rendering: pixelated;
  filter: drop-shadow(0 0 8px var(--gold-glow));
}

.project-card__title {
  font-size: 18px;
  color: var(--imperial-gold);
  letter-spacing: 3px;
  margin-bottom: var(--sp-3);
  text-shadow: 0 0 8px var(--gold-glow);
}

.project-card__desc {
  font-size: 12px;
  color: var(--bone-white);
  letter-spacing: 1px;
  line-height: 1.8;
  margin-bottom: var(--sp-4);
  text-transform: none;
  max-width: 360px;
}

.project-card__status {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-1);
  font-size: 10px;
  color: var(--mechanicus-teal);
  letter-spacing: 2px;
  margin-bottom: var(--sp-4);
}

.project-card__status-dot {
  width: 6px;
  height: 6px;
  background: var(--mechanicus-teal);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.3;
  }
}


/* ============================================
   10. IMPERIAL COMMAND BUTTON
   ============================================ */
.btn-imperial {
  display: inline-block;
  padding: var(--sp-2) var(--sp-4);
  background: var(--void-black);
  color: var(--imperial-gold);
  border: 2px solid var(--imperial-gold);
  font-family: var(--font-primary), var(--font-fallback), monospace;
  font-size: 12px;
  letter-spacing: 3px;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.15s steps(3), color 0.15s steps(3), box-shadow 0.3s;
  text-decoration: none;
  position: relative;
}

.btn-imperial:hover {
  background: var(--imperial-gold);
  color: var(--void-black);
  box-shadow: 0 0 15px var(--gold-glow), 0 0 30px var(--gold-glow);
}

.btn-imperial:active {
  background: var(--blood-red);
  border-color: var(--blood-red);
  color: var(--bone-white);
}

/* Arrow indicator on button */
.btn-imperial__arrow {
  margin-left: var(--sp-2);
  transition: transform 0.2s;
}

.btn-imperial:hover .btn-imperial__arrow {
  transform: translateX(4px);
}


/* ============================================
   11. CONTRIBUTION GRAPH (Cogitator Activity)
   ============================================ */
.contrib {
  width: 100%;
  overflow-x: auto;
  padding: var(--sp-2) 0;
  scrollbar-width: thin;
  scrollbar-color: var(--imperial-gold) var(--warp-black);
}

.contrib__loading {
  text-align: center;
  padding: var(--sp-6) 0;
}

.contrib__loading-text {
  font-size: 12px;
  color: var(--ash-grey);
  letter-spacing: 2px;
  animation: pulse-dot 1.5s ease-in-out infinite;
}

.contrib__grid {
  display: grid;
  grid-template-rows: repeat(7, 1fr);
  grid-auto-flow: column;
  grid-auto-columns: 1fr;
  gap: 3px;
  min-width: 720px;
  padding: var(--sp-2);
}

.contrib__cell {
  aspect-ratio: 1;
  width: 100%;
  transition: transform 0.15s, box-shadow 0.15s;
  position: relative;
  cursor: crosshair;
}

.contrib__cell:hover {
  transform: scale(1.6);
  z-index: 10;
}

/* W40K Imperial Gold color levels */
.contrib__cell[data-level="0"] {
  background: var(--parchment);
  border: 1px solid rgba(107, 107, 123, 0.15);
}

.contrib__cell[data-level="1"] {
  background: #5C4300;
  border: 1px solid #6B5010;
  box-shadow: 0 0 2px rgba(92, 67, 0, 0.3);
}

.contrib__cell[data-level="2"] {
  background: #8B6914;
  border: 1px solid #9A7820;
  box-shadow: 0 0 3px rgba(139, 105, 20, 0.4);
}

.contrib__cell[data-level="3"] {
  background: #C5A052;
  border: 1px solid #D4AF61;
  box-shadow: 0 0 4px rgba(197, 160, 82, 0.4);
}

.contrib__cell[data-level="4"] {
  background: #E9C16F;
  border: 1px solid #F0D080;
  box-shadow: 0 0 6px rgba(233, 193, 111, 0.5);
}

.contrib__cell[data-level="1"]:hover {
  box-shadow: 0 0 8px rgba(92, 67, 0, 0.6);
}

.contrib__cell[data-level="2"]:hover {
  box-shadow: 0 0 10px rgba(139, 105, 20, 0.6);
}

.contrib__cell[data-level="3"]:hover {
  box-shadow: 0 0 12px rgba(197, 160, 82, 0.7);
}

.contrib__cell[data-level="4"]:hover {
  box-shadow: 0 0 14px rgba(233, 193, 111, 0.8);
}

/* Legend cells reuse the same data-level styling */
.contrib__legend-cell {
  display: inline-block;
  width: 11px;
  height: 11px;
}

.contrib__legend-cell[data-level="0"] {
  background: var(--parchment);
  border: 1px solid rgba(107, 107, 123, 0.15);
}

.contrib__legend-cell[data-level="1"] {
  background: #5C4300;
  border: 1px solid #6B5010;
}

.contrib__legend-cell[data-level="2"] {
  background: #8B6914;
  border: 1px solid #9A7820;
}

.contrib__legend-cell[data-level="3"] {
  background: #C5A052;
  border: 1px solid #D4AF61;
}

.contrib__legend-cell[data-level="4"] {
  background: #E9C16F;
  border: 1px solid #F0D080;
}

.contrib__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--sp-3);
  padding: 0 var(--sp-2);
}

.contrib__legend {
  display: flex;
  align-items: center;
  gap: 3px;
}

.contrib__legend-label {
  font-size: 10px;
  color: var(--ash-grey);
  letter-spacing: 1px;
  margin: 0 var(--sp-1);
}

.contrib__total {
  font-size: 10px;
  color: var(--imperial-gold);
  letter-spacing: 2px;
}

.contrib__months {
  display: grid;
  grid-auto-flow: column;
  gap: 3px;
  padding: 0 var(--sp-2);
  margin-bottom: var(--sp-1);
  min-width: 720px;
}

.contrib__month-label {
  font-size: 9px;
  color: var(--ash-grey);
  letter-spacing: 1px;
  text-align: left;
}

/* Tooltip */
.contrib__tooltip {
  position: fixed;
  padding: var(--sp-1) var(--sp-2);
  background: var(--warp-black);
  border: 1px solid var(--imperial-gold);
  color: var(--bone-white);
  font-family: var(--font-primary), monospace;
  font-size: 10px;
  letter-spacing: 1px;
  pointer-events: none;
  z-index: 9999;
  white-space: nowrap;
  display: none;
  text-transform: none;
}


/* ============================================
   12. FOOTER
   ============================================ */
.footer {
  position: relative;
  z-index: 2;
  padding: var(--sp-7) var(--sp-4) var(--sp-5);
  text-align: center;
}

.footer__aquila {
  width: 120px;
  height: auto;
  margin: 0 auto var(--sp-4);
  opacity: 0.6;
  image-rendering: pixelated;
  filter: drop-shadow(0 0 6px var(--gold-glow));
}

.footer__flavor {
  font-size: 12px;
  color: var(--bone-white);
  letter-spacing: 2px;
  margin-bottom: var(--sp-3);
  text-shadow: 0 0 6px var(--gold-glow);
}

.footer__copyright {
  font-size: 10px;
  color: var(--ash-grey);
  letter-spacing: 2px;
}

.footer__links {
  display: flex;
  justify-content: center;
  gap: var(--sp-4);
  margin-top: var(--sp-3);
}

.footer__link {
  font-size: 10px;
  color: var(--ash-grey);
  letter-spacing: 1px;
  transition: color 0.2s;
}

.footer__link:hover {
  color: var(--imperial-gold);
}

.footer__divider {
  width: 100%;
  max-width: 600px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--imperial-gold), transparent);
  margin: 0 auto var(--sp-5);
  opacity: 0.4;
}


/* ============================================
   12. ANIMATIONS
   ============================================ */
@keyframes fade-in-up {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fade-in {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes glow-pulse {

  0%,
  100% {
    text-shadow:
      0 0 20px var(--gold-glow-strong),
      0 0 40px var(--gold-glow);
  }

  50% {
    text-shadow:
      0 0 30px var(--gold-glow-strong),
      0 0 60px var(--gold-glow),
      0 0 100px rgba(197, 160, 82, 0.1);
  }
}


/* ============================================
   13. RESPONSIVE BREAKPOINTS
   ============================================ */

/* Tablet: 768px - 1023px */
@media (max-width: 1023px) {
  .hero__title {
    font-size: 48px;
    letter-spacing: 8px;
  }

  .hero__subtitle {
    font-size: 14px;
    letter-spacing: 3px;
  }

  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Mobile: < 768px */
@media (max-width: 767px) {
  .hero__title {
    font-size: 32px;
    letter-spacing: 4px;
    min-height: 40px;
  }

  .hero__subtitle {
    font-size: 12px;
    letter-spacing: 2px;
  }

  .hero__tagline {
    font-size: 10px;
  }

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

  .nav {
    padding: var(--sp-2) var(--sp-3);
  }

  .nav__logo {
    font-size: 16px;
    letter-spacing: 2px;
  }

  .nav__link {
    font-size: 10px;
    padding: var(--sp-1) var(--sp-2);
    letter-spacing: 1px;
  }

  .section__title {
    font-size: 18px;
    letter-spacing: 2px;
  }

  .project-card {
    padding: var(--sp-4);
  }

  .project-card__icon {
    width: 64px;
    height: 64px;
  }
}


/* ============================================
   14. REDUCED MOTION
   ============================================ */
@media (prefers-reduced-motion: reduce) {

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

  .hero__title {
    border-right: none;
  }

  .hero__subtitle,
  .hero__tagline,
  .hero__scroll-indicator {
    opacity: 1;
    transform: none;
  }

  .project-card {
    opacity: 1;
    transform: none;
  }
}