/* ================================================
   CouchFort — Retro Terminal Game Portal
   ================================================ */

@import url('https://fonts.googleapis.com/css2?family=Share+Tech+Mono&display=swap');

:root {
  --green:      #00ff41;
  --green-mid:  #00cc33;
  --green-dim:  #008f23;
  --green-dark: #003d0f;
  --green-glow: rgba(0, 255, 65, 0.18);
  --card-bg:    rgba(2, 8, 2, 0.88);
  --bg:         #030803;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
}

body {
  background-color: var(--bg);
  color: var(--green);
  font-family: 'Share Tech Mono', 'Courier New', Courier, monospace;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ================================================
   BACKGROUND CANVAS (metaballs + dithering)
   ================================================ */

#bgCanvas {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: -3;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

/* ================================================
   SCANLINES & VIGNETTE
   ================================================ */

.scanlines {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0px,
    transparent 3px,
    rgba(0, 0, 0, 0.12) 3px,
    rgba(0, 0, 0, 0.12) 4px
  );
}

.vignette {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: radial-gradient(
    ellipse at center,
    transparent 55%,
    rgba(0, 0, 0, 0.65) 100%
  );
}

/* ================================================
   LAYOUT
   ================================================ */

#app {
  position: relative;
  z-index: 1;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem 4rem;
}

/* ================================================
   HEADER & ASCII TITLE
   ================================================ */

header {
  text-align: center;
  padding: 3.5rem 1rem 2.5rem;
  border-bottom: 1px solid var(--green-dark);
  margin-bottom: 2rem;
}

.ascii-title {
  display: inline-block;
  font-size: clamp(0.28rem, 0.52vw, 0.62rem);
  line-height: 1.15;
  white-space: pre;
  overflow: hidden;
  color: var(--green);
  text-shadow:
    0 0 8px var(--green),
    0 0 22px rgba(0, 255, 65, 0.4),
    -1.5px 0 0 rgba(255, 30, 80, 0.35),
    1.5px  0 0 rgba(40, 80, 255, 0.35);
  animation: titleFlicker 8s step-end infinite;
}

@keyframes titleFlicker {
  0%, 94%, 96%, 98%, 100% { opacity: 1; }
  95%  { opacity: 0.85; }
  97%  { opacity: 0.92; }
  99%  { opacity: 0.88; }
}

.tagline {
  margin-top: 1.8rem;
  color: var(--green-dim);
  font-size: 0.9rem;
  letter-spacing: 0.12em;
  text-shadow: 0 0 10px var(--green-glow);
}

/* ================================================
   CURSOR BLINK
   ================================================ */

.cursor {
  animation: blink 1.1s step-end infinite;
  color: var(--green);
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

/* ================================================
   TAG FILTER BAR
   ================================================ */

.filter-bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.6rem;
  padding: 1rem 0 1.2rem;
  margin-bottom: 1.8rem;
  border-bottom: 1px dashed var(--green-dark);
}

.filter-prompt {
  color: var(--green-dim);
  font-size: 0.78rem;
  flex-shrink: 0;
  letter-spacing: 0.06em;
}

#tagFilters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.tag-btn {
  background: transparent;
  border: 1px solid var(--green-dark);
  color: var(--green-dim);
  font-family: inherit;
  font-size: 0.72rem;
  padding: 0.22rem 0.7rem;
  cursor: pointer;
  letter-spacing: 0.06em;
  transition: all 0.12s ease;
  text-transform: lowercase;
  outline: none;
}

.tag-btn::before { content: '['; margin-right: 1px; }
.tag-btn::after  { content: ']'; margin-left:  1px; }

.tag-btn:hover {
  border-color: var(--green-mid);
  color: var(--green);
  box-shadow: 0 0 7px var(--green-glow);
}

.tag-btn.active {
  border-color: var(--green);
  color: var(--green);
  background: var(--green-dark);
  box-shadow: 0 0 10px var(--green-glow);
  text-shadow: 0 0 6px var(--green);
}

/* ================================================
   GAME GRID
   ================================================ */

#gameGrid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.4rem;
}

.no-results,
.load-error {
  grid-column: 1 / -1;
  color: var(--green-dim);
  padding: 2rem;
  text-align: center;
  font-size: 0.85rem;
}

/* ================================================
   GAME CARD
   ================================================ */

.game-card {
  background: var(--card-bg);
  border: 1px solid var(--green-dark);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

/* Corner accent — top-left bracket */
.game-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(to right, var(--green-mid), transparent);
  opacity: 0;
  transition: opacity 0.18s ease;
}

.game-card:hover {
  border-color: var(--green-mid);
  box-shadow:
    0 0 18px rgba(0, 255, 65, 0.12),
    inset 0 0 20px rgba(0, 255, 65, 0.025);
}

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

/* Card thumbnail */
.card-thumb {
  position: relative;
  width: 100%;
  height: 220px;
  overflow: hidden;
  border-bottom: 1px solid var(--green-dark);
  background: #000;
}

.card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  /* Green duotone via CSS: desaturate then tint */
  filter: grayscale(1) brightness(0.7) sepia(1) hue-rotate(80deg) saturate(3);
  transition: filter 0.2s ease, transform 0.2s ease;
}

.game-card:hover .card-thumb img {
  filter: grayscale(0.3) brightness(0.85) sepia(0.4) hue-rotate(80deg) saturate(2);
  transform: scale(1.03);
}

/* Scanline overlay on thumbnail */
.card-thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0px,
    transparent 3px,
    rgba(0, 0, 0, 0.18) 3px,
    rgba(0, 0, 0, 0.18) 4px
  );
}

/* Card sections */
.card-header {
  padding: 1rem 1.2rem 0.8rem;
  border-bottom: 1px solid var(--green-dark);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.card-prompt {
  color: var(--green);
  font-size: 1rem;
  flex-shrink: 0;
}

.card-title {
  font-size: 0.95rem;
  font-weight: normal;
  color: var(--green);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  text-shadow:
    0 0 8px rgba(0, 255, 65, 0.5),
    -1px 0 0 rgba(255, 30, 80, 0.25),
    1px  0 0 rgba(40, 80, 255, 0.25);
}

.card-body {
  padding: 1rem 1.2rem;
  flex: 1;
  color: var(--green-dim);
  font-size: 0.82rem;
  line-height: 1.65;
}

.card-meta {
  padding: 0.7rem 1.2rem;
  border-top: 1px dashed var(--green-dark);
  font-size: 0.72rem;
}

.card-creator {
  color: var(--green-dim);
  margin-bottom: 0.45rem;
}

.card-creator::before {
  content: 'by: ';
  color: #005010;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
}

.card-tag {
  font-size: 0.62rem;
  color: #005518;
  border: 1px solid #002d0b;
  padding: 0.08rem 0.38rem;
  letter-spacing: 0.04em;
}

.card-play {
  padding: 0.8rem 1.2rem 1rem;
  border-top: 1px solid var(--green-dark);
}

.play-btn {
  display: block;
  width: 100%;
  background: transparent;
  border: 1px solid var(--green-dim);
  color: var(--green);
  font-family: inherit;
  font-size: 0.82rem;
  padding: 0.55rem 1rem;
  text-align: center;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  cursor: pointer;
  transition: all 0.14s ease;
}

.play-btn::before { content: '[ '; }
.play-btn::after  { content: ' ]'; }

.play-btn:hover {
  background: var(--green-dark);
  border-color: var(--green);
  box-shadow: 0 0 14px var(--green-glow);
  text-shadow: 0 0 8px var(--green);
}

/* ================================================
   FOOTER
   ================================================ */

footer {
  text-align: center;
  padding: 2.5rem 1rem 1rem;
  margin-top: 3rem;
  border-top: 1px solid var(--green-dark);
  color: #004d18;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
}

/* ================================================
   RESPONSIVE
   ================================================ */

@media (max-width: 960px) {
  #gameGrid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 580px) {
  #app {
    padding: 0 1rem 3rem;
  }

  #gameGrid {
    grid-template-columns: 1fr;
  }

  .ascii-title {
    font-size: 0.22rem;
  }
}