:root {
  --bg: #0a0420;
  --fg: #ffffff;
  --accent: #ff3df5;
  --muted: #06f0ff;
  --font-display: "Orbitron", "Rajdhani", "Segoe UI", Arial, sans-serif;
  --font-body: "Inter", "Segoe UI", Arial, sans-serif;
  --font-numeric: "JetBrains Mono", "Consolas", "Menlo", monospace;
  --elev-1: 0 1px 2px rgba(0,0,0,0.35);
  --elev-2: 0 12px 40px rgba(0,0,0,0.55);
  --elev-3: 0 22px 60px rgba(0,0,0,0.65);
}

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

html, body {
  height: 100%;
  width: 100%;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body::after {
  /* depth: radial accent halo behind the board */
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse at 50% 0%, color-mix(in srgb, var(--accent) 22%, transparent), transparent 55%),
    radial-gradient(ellipse at 50% 120%, color-mix(in srgb, var(--muted) 18%, transparent), transparent 55%);
  z-index: 0;
  pointer-events: none;
}

#fx-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

#bg-image {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.32;
  z-index: -1;
  pointer-events: none;
  filter: saturate(0.9) contrast(1.05);
}

.scrim {
  position: fixed;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(0,0,0,0.25) 0%, transparent 30%, transparent 70%, rgba(0,0,0,0.65) 100%),
    radial-gradient(ellipse at 50% 40%, transparent 40%, rgba(0,0,0,0.5) 100%);
  pointer-events: none;
  z-index: 2;
}

main {
  position: relative;
  z-index: 3;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 4vh 4vw 2vh;
  gap: 2vh;
}

header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.2em;
  padding: 0.5vh 0 1vh;
  position: relative;
}
header::after {
  content: "";
  position: absolute;
  left: 10%; right: 10%; bottom: 0;
  height: 1px;
  background: linear-gradient(90deg,
    transparent,
    color-mix(in srgb, var(--accent) 70%, transparent) 50%,
    transparent);
}

header img.logo {
  width: clamp(52px, 5.5vw, 84px);
  height: clamp(52px, 5.5vw, 84px);
  object-fit: contain;
  filter: drop-shadow(0 6px 18px rgba(0,0,0,0.55));
}

header h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.2rem, 4.4vw, 4.4rem);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: linear-gradient(180deg,
    color-mix(in srgb, var(--fg) 95%, white),
    color-mix(in srgb, var(--accent) 90%, var(--fg)));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 0 18px color-mix(in srgb, var(--accent) 55%, transparent));
  animation: title-pulse 4.2s ease-in-out infinite;
}
@keyframes title-pulse {
  0%, 100% { filter: drop-shadow(0 0 14px color-mix(in srgb, var(--accent) 40%, transparent)); }
  50%      { filter: drop-shadow(0 0 26px color-mix(in srgb, var(--accent) 70%, transparent)); }
}

.board-wrap {
  position: relative;
  width: min(960px, 96vw);
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  flex-direction: column;
  isolation: isolate;
}
.board-wrap::before {
  /* animated gradient border */
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: 20px;
  padding: 1px;
  background: conic-gradient(from 0deg,
    color-mix(in srgb, var(--accent) 80%, transparent),
    color-mix(in srgb, var(--muted) 60%, transparent),
    color-mix(in srgb, var(--accent) 30%, transparent),
    color-mix(in srgb, var(--accent) 80%, transparent));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  animation: border-spin 12s linear infinite;
  pointer-events: none;
  opacity: 0.85;
}
@keyframes border-spin {
  to { transform: rotate(360deg); }
}

.board {
  position: relative;
  flex: 1 1 auto;
  min-height: 0;
  overflow: auto;
  overscroll-behavior: contain;
  backdrop-filter: blur(14px) saturate(1.2);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
  background:
    linear-gradient(180deg,
      color-mix(in srgb, var(--bg) 82%, transparent),
      color-mix(in srgb, var(--bg) 72%, transparent));
  border-radius: 20px;
  padding: 0 1.6em 1.2em;
  box-shadow: var(--elev-3), inset 0 0 40px color-mix(in srgb, var(--accent) 6%, transparent);
  scrollbar-width: thin;
  scrollbar-color: color-mix(in srgb, var(--accent) 60%, transparent) transparent;
}
.board::-webkit-scrollbar { width: 8px; }
.board::-webkit-scrollbar-thumb {
  background: color-mix(in srgb, var(--accent) 55%, transparent);
  border-radius: 8px;
}

.row {
  display: grid;
  grid-template-columns: 4.2em 1fr 8.5em;
  align-items: center;
  gap: 1em;
  padding: 0.7em 0.9em;
  font-size: clamp(1.05rem, 1.4vw, 1.35rem);
  border-radius: 10px;
  transition: background 200ms ease, transform 200ms ease;
}
.row + .row {
  border-top: 1px solid color-mix(in srgb, var(--muted) 18%, transparent);
}
.row:not(.header):hover {
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  transform: translateX(4px);
}

.row.header {
  position: sticky;
  top: 0;
  z-index: 5;
  font-family: var(--font-display);
  font-size: clamp(0.72rem, 0.95vw, 0.9rem);
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--fg) 75%, var(--accent));
  padding: 1em 0.9em 0.9em;
  background:
    linear-gradient(180deg,
      color-mix(in srgb, var(--bg) 96%, transparent) 0%,
      color-mix(in srgb, var(--bg) 92%, transparent) 70%,
      color-mix(in srgb, var(--bg) 60%, transparent) 100%);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid color-mix(in srgb, var(--accent) 45%, transparent);
  border-top: none;
  margin: 0 -1.6em;
  padding-left: 2.5em;
  padding-right: 2.5em;
}
.row.header::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 1px;
  background: linear-gradient(90deg,
    transparent,
    color-mix(in srgb, var(--accent) 80%, transparent) 30%,
    color-mix(in srgb, var(--accent) 80%, transparent) 70%,
    transparent);
  filter: blur(0.5px);
}

.row .rank {
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.1em;
  color: color-mix(in srgb, var(--accent) 85%, var(--fg));
  min-height: 2.2em;
}
.row.header .rank,
.row.header .nickname,
.row.header .score {
  justify-content: flex-start;
}
.row.header .rank { text-align: center; justify-content: center; }
.row.header .score { text-align: right; justify-content: flex-end; display: flex; }

.row .nickname {
  font-weight: 600;
  letter-spacing: 0.02em;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.row .score {
  font-family: var(--font-numeric);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  text-align: right;
  color: color-mix(in srgb, var(--fg) 90%, var(--accent));
  letter-spacing: 0.04em;
}

/* Medal badges for the top 3 */
.row.rank-1, .row.rank-2, .row.rank-3 {
  padding: 0.85em 0.9em;
}
.row.rank-1 .rank,
.row.rank-2 .rank,
.row.rank-3 .rank {
  width: 2.4em;
  height: 2.4em;
  border-radius: 50%;
  color: #1a0f00;
  font-weight: 900;
  box-shadow:
    inset 0 -4px 8px rgba(0,0,0,0.35),
    inset 0 2px 6px rgba(255,255,255,0.55),
    0 4px 14px rgba(0,0,0,0.45);
  text-shadow: 0 1px 1px rgba(255,255,255,0.3);
}
.row.rank-1 .rank {
  background: radial-gradient(circle at 30% 25%, #fff7c2, #ffd94a 45%, #b27900 100%);
}
.row.rank-2 .rank {
  background: radial-gradient(circle at 30% 25%, #ffffff, #e5e8ec 40%, #8a8f96 100%);
}
.row.rank-3 .rank {
  background: radial-gradient(circle at 30% 25%, #ffdcb5, #d48a50 45%, #6f3a17 100%);
}
.row.rank-1 { background: linear-gradient(90deg, color-mix(in srgb, #ffd94a 14%, transparent), transparent); }
.row.rank-2 { background: linear-gradient(90deg, color-mix(in srgb, #dde3ea 12%, transparent), transparent); }
.row.rank-3 { background: linear-gradient(90deg, color-mix(in srgb, #d48a50 12%, transparent), transparent); }

.row.new-high {
  animation: flash 1.5s ease-out;
}
@keyframes flash {
  0%   { background: color-mix(in srgb, var(--accent) 45%, transparent); transform: scale(1.015); }
  100% { background: transparent; transform: scale(1); }
}

.empty {
  text-align: center;
  padding: 4em 1em;
  color: color-mix(in srgb, var(--fg) 60%, transparent);
  font-family: var(--font-display);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 0.95em;
}

.error-banner {
  color: #ffd4d4;
  background: rgba(128,0,0,0.55);
  border: 1px solid rgba(255,80,80,0.6);
  padding: 1em 1.2em;
  border-radius: 10px;
  margin: 1.2em 0;
  font-family: var(--font-display);
  letter-spacing: 0.1em;
}

footer {
  position: relative;
  z-index: 3;
  font-size: 0.85em;
  color: color-mix(in srgb, var(--fg) 60%, transparent);
  font-family: var(--font-display);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  padding-top: 0.4em;
  text-align: center;
}
footer a {
  color: color-mix(in srgb, var(--fg) 80%, var(--accent));
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid color-mix(in srgb, var(--accent) 50%, transparent);
  transition: color 200ms ease, border-color 200ms ease, text-shadow 200ms ease;
}
footer a:hover {
  color: #fff;
  border-color: var(--accent);
  text-shadow: 0 0 14px color-mix(in srgb, var(--accent) 80%, transparent);
}

/* CRT overlay for scanline-crt effect. */
body.fx-scanline-crt::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 4;
  background: repeating-linear-gradient(
    180deg,
    rgba(0,0,0,0) 0px,
    rgba(0,0,0,0) 2px,
    rgba(0,0,0,0.22) 3px,
    rgba(0,0,0,0) 4px
  );
  mix-blend-mode: multiply;
}

body.fx-chroma-swirl {
  background:
    conic-gradient(from 180deg at 50% 50%,
      color-mix(in srgb, var(--accent) 35%, var(--bg)),
      var(--bg),
      color-mix(in srgb, var(--muted) 30%, var(--bg)),
      var(--bg),
      color-mix(in srgb, var(--accent) 35%, var(--bg))
    );
  animation: spin-slow 60s linear infinite;
  background-size: 200% 200%;
}
@keyframes spin-slow {
  from { background-position: 0% 0%; }
  to   { background-position: 100% 100%; }
}

body.fx-fog-creep::after {
  content: "";
  position: fixed;
  inset: -20%;
  z-index: 2;
  pointer-events: none;
  background:
    radial-gradient(ellipse at 30% 80%, rgba(255,255,255,0.16), transparent 50%),
    radial-gradient(ellipse at 70% 90%, rgba(255,255,255,0.10), transparent 60%);
  filter: blur(30px);
  animation: fog 30s ease-in-out infinite alternate;
}
@keyframes fog {
  from { transform: translate(-3%, 0); }
  to   { transform: translate(3%, -2%); }
}

/* Tablet and down */
@media (max-width: 900px) {
  main { padding: 3vh 3vw 1.5vh; gap: 1.5vh; }
  .board { padding: 0 1.1em 0.8em; }
  .row.header { padding-left: 1.6em; padding-right: 1.6em; margin: 0 -1.1em; }
  .row { grid-template-columns: 3em 1fr 6em; gap: 0.7em; padding: 0.6em 0.7em; }
}

/* Phones */
@media (max-width: 560px) {
  main { padding: 2.5vh 2.5vw 1.2vh; gap: 1.2vh; }
  header { gap: 0.7em; flex-wrap: nowrap; padding-bottom: 0.5vh; }
  header img.logo { width: 40px; height: 40px; }
  header h1 {
    font-size: clamp(1.4rem, 7vw, 2.2rem);
    letter-spacing: 0.04em;
  }
  .board-wrap { width: 100%; }
  .board { padding: 0 0.7em 0.7em; border-radius: 14px; }
  .board-wrap::before { border-radius: 14px; }
  .row {
    grid-template-columns: 2.4em 1fr 5em;
    gap: 0.5em;
    padding: 0.55em 0.6em;
    font-size: 0.95rem;
  }
  .row.header {
    padding: 0.7em 0.7em 0.65em;
    padding-left: 1.2em;
    padding-right: 1.2em;
    margin: 0 -0.7em;
    font-size: 0.62rem;
    letter-spacing: 0.18em;
  }
  .row .rank { font-size: 0.95em; min-height: 1.9em; }
  .row.rank-1 .rank,
  .row.rank-2 .rank,
  .row.rank-3 .rank {
    width: 2em; height: 2em;
    font-size: 0.85em;
  }
  .row:not(.header):hover { transform: none; } /* no hover nudge on touch */
  footer {
    font-size: 0.68rem;
    letter-spacing: 0.14em;
    line-height: 1.4;
  }
}

/* Tiny screens / watches */
@media (max-width: 360px) {
  .row { grid-template-columns: 2em 1fr 4.5em; font-size: 0.88rem; }
  .row.header { font-size: 0.56rem; letter-spacing: 0.14em; }
  header h1 { font-size: 1.35rem; }
}

/* Respect prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  #fx-canvas { display: none; }
  body.fx-chroma-swirl { animation: none; }
  body.fx-fog-creep::after { animation: none; }
}