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

:root {
  --bg-deep: #07001a;
  --bg-panel: rgba(20, 0, 40, 0.65);
  --bg-panel-2: rgba(40, 0, 60, 0.55);
  --neon-magenta: #ff2bd6;
  --neon-cyan: #00f0ff;
  --neon-green: #39ff5a;
  --neon-yellow: #fff45e;
  --neon-purple: #b967ff;
  --text-soft: #e8d8ff;
  --text-dim: #8a7aa8;
  --warn: #ff5e7e;

  --font-display: "Monoton", cursive;
  --font-mono: "Share Tech Mono", monospace;
  --font-retro: "VT323", monospace;
}

html,
body {
  height: 100%;
}

body {
  background: var(--bg-deep);
  color: var(--text-soft);
  font-family: var(--font-mono);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  background-image:
    radial-gradient(
      ellipse at 20% 10%,
      rgba(255, 43, 214, 0.15),
      transparent 50%
    ),
    radial-gradient(
      ellipse at 80% 90%,
      rgba(0, 240, 255, 0.12),
      transparent 50%
    ),
    radial-gradient(
      ellipse at 50% 50%,
      rgba(185, 103, 255, 0.08),
      transparent 60%
    );
}

/* ═══════════════════════════════════════════════════════════════
     MATRIX RAIN BACKGROUND
     ═══════════════════════════════════════════════════════════════ */
#matrix-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  opacity: 0.35;
  pointer-events: none;
}

/* SCANLINES */
.scanlines {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: repeating-linear-gradient(
    0deg,
    rgba(0, 0, 0, 0) 0px,
    rgba(0, 0, 0, 0) 2px,
    rgba(0, 0, 0, 0.18) 3px,
    rgba(0, 0, 0, 0) 4px
  );
  mix-blend-mode: multiply;
}

/* CRT VIGNETTE */
.vignette {
  position: fixed;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background: radial-gradient(
    ellipse at center,
    transparent 50%,
    rgba(0, 0, 0, 0.6) 100%
  );
}

/* ═══════════════════════════════════════════════════════════════
     LAYOUT
     ═══════════════════════════════════════════════════════════════ */
main {
  position: relative;
  z-index: 3;
  max-width: 1400px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}

/* ═══════════════════════════════════════════════════════════════
     HEADER
     ═══════════════════════════════════════════════════════════════ */
header {
  text-align: center;
  margin-bottom: 60px;
  padding-top: 20px;
}

.title-wrap {
  display: inline-block;
  position: relative;
}

h1.glitch {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 7vw, 5.5rem);
  color: var(--neon-magenta);
  letter-spacing: 0.05em;
  text-shadow:
    0 0 8px var(--neon-magenta),
    0 0 24px rgba(255, 43, 214, 0.6),
    3px 0 0 var(--neon-cyan),
    -3px 0 0 var(--neon-yellow);
  position: relative;
  line-height: 1;
  animation: flicker 4s infinite;
}

h1.glitch::before,
h1.glitch::after {
  content: attr(data-text);
  position: absolute;
  inset: 0;
  pointer-events: none;
}
h1.glitch::before {
  color: var(--neon-cyan);
  transform: translate(-2px, 0);
  mix-blend-mode: screen;
  animation: glitch-1 3.2s infinite linear alternate;
  opacity: 0.7;
}
h1.glitch::after {
  color: var(--neon-green);
  transform: translate(2px, 0);
  mix-blend-mode: screen;
  animation: glitch-2 2.7s infinite linear alternate;
  opacity: 0.55;
}

@keyframes glitch-1 {
  0%,
  90%,
  100% {
    clip-path: inset(0 0 0 0);
    transform: translate(-2px, 0);
  }
  20% {
    clip-path: inset(20% 0 60% 0);
    transform: translate(-4px, 1px);
  }
  40% {
    clip-path: inset(60% 0 10% 0);
    transform: translate(-1px, -2px);
  }
  60% {
    clip-path: inset(35% 0 35% 0);
    transform: translate(-3px, 1px);
  }
}
@keyframes glitch-2 {
  0%,
  90%,
  100% {
    clip-path: inset(0 0 0 0);
    transform: translate(2px, 0);
  }
  25% {
    clip-path: inset(70% 0 5% 0);
    transform: translate(3px, -1px);
  }
  50% {
    clip-path: inset(10% 0 70% 0);
    transform: translate(1px, 2px);
  }
  75% {
    clip-path: inset(40% 0 30% 0);
    transform: translate(4px, 1px);
  }
}
@keyframes flicker {
  0%,
  96%,
  100% {
    opacity: 1;
  }
  97% {
    opacity: 0.4;
  }
  98% {
    opacity: 1;
  }
  99% {
    opacity: 0.7;
  }
}

.subtitle {
  margin-top: 14px;
  font-family: var(--font-retro);
  font-size: 1.5rem;
  color: var(--neon-cyan);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  text-shadow: 0 0 12px var(--neon-cyan);
}
.blink {
  animation: blink 1.1s steps(2, end) infinite;
}
@keyframes blink {
  50% {
    opacity: 0;
  }
}

/* ═══════════════════════════════════════════════════════════════
     SECTIONS
     ═══════════════════════════════════════════════════════════════ */
section {
  margin-bottom: 40px;
  border: 1px solid rgba(255, 43, 214, 0.4);
  background: var(--bg-panel);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  padding: 28px 28px 32px;
  position: relative;
  box-shadow:
    0 0 0 1px rgba(0, 240, 255, 0.1),
    0 0 40px rgba(255, 43, 214, 0.08),
    inset 0 0 60px rgba(185, 103, 255, 0.04);
}
section::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 18px;
  height: 18px;
  border-top: 2px solid var(--neon-cyan);
  border-left: 2px solid var(--neon-cyan);
}
section::after {
  content: "";
  position: absolute;
  bottom: -1px;
  right: -1px;
  width: 18px;
  height: 18px;
  border-bottom: 2px solid var(--neon-magenta);
  border-right: 2px solid var(--neon-magenta);
}

h2 {
  font-family: var(--font-retro);
  font-size: 1.8rem;
  color: var(--neon-green);
  letter-spacing: 0.15em;
  text-shadow: 0 0 8px rgba(57, 255, 90, 0.7);
  margin-bottom: 6px;
  text-transform: uppercase;
}
h2 .bracket {
  color: var(--neon-magenta);
}

.section-hint {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 20px;
  letter-spacing: 0.05em;
}

/* ═══════════════════════════════════════════════════════════════
     BUTTONS
     ═══════════════════════════════════════════════════════════════ */
button {
  font-family: var(--font-mono);
  background: transparent;
  color: var(--neon-cyan);
  border: 1px solid var(--neon-cyan);
  padding: 8px 16px;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-size: 0.85rem;
  transition: all 0.15s ease-out;
  text-shadow: 0 0 6px rgba(0, 240, 255, 0.5);
}
button:hover {
  background: var(--neon-cyan);
  color: var(--bg-deep);
  box-shadow:
    0 0 18px var(--neon-cyan),
    inset 0 0 18px rgba(255, 255, 255, 0.3);
  text-shadow: none;
}
button.danger {
  color: var(--warn);
  border-color: var(--warn);
  text-shadow: 0 0 6px rgba(255, 94, 126, 0.5);
  padding: 4px 10px;
  font-size: 0.75rem;
}
button.danger:hover {
  background: var(--warn);
  color: var(--bg-deep);
  box-shadow: 0 0 14px var(--warn);
}
button.add-btn {
  color: var(--neon-magenta);
  border-color: var(--neon-magenta);
  text-shadow: 0 0 6px rgba(255, 43, 214, 0.5);
}
button.add-btn:hover {
  background: var(--neon-magenta);
  color: var(--bg-deep);
  box-shadow: 0 0 18px var(--neon-magenta);
}

/* ═══════════════════════════════════════════════════════════════
     SCHEMA — TABLE CARDS
     ═══════════════════════════════════════════════════════════════ */
#tables-container {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  margin-bottom: 16px;
}

.table-card {
  border: 1px solid rgba(0, 240, 255, 0.4);
  background: var(--bg-panel-2);
  padding: 18px;
  position: relative;
}
.table-card-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px dashed rgba(0, 240, 255, 0.3);
}
.table-card-header .label {
  font-family: var(--font-retro);
  color: var(--neon-yellow);
  font-size: 1.2rem;
  text-shadow: 0 0 6px rgba(255, 244, 94, 0.5);
}

.field-group {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  margin-bottom: 14px;
}
.field-row {
  display: flex;
  gap: 6px;
  align-items: center;
}

input[type="text"],
input[type="number"],
select,
textarea {
  font-family: var(--font-mono);
  background: rgba(0, 0, 0, 0.5);
  color: var(--neon-green);
  border: 1px solid rgba(57, 255, 90, 0.35);
  padding: 6px 10px;
  font-size: 0.9rem;
  outline: none;
  transition: all 0.15s ease;
  width: 100%;
}
input[type="text"]::placeholder,
input[type="number"]::placeholder,
textarea::placeholder {
  color: rgba(138, 122, 168, 0.6);
}
input:focus,
select:focus,
textarea:focus {
  border-color: var(--neon-magenta);
  box-shadow:
    0 0 12px rgba(255, 43, 214, 0.4),
    inset 0 0 8px rgba(255, 43, 214, 0.1);
  color: var(--neon-cyan);
}

select {
  color: var(--neon-cyan);
  cursor: pointer;
  appearance: none;
  background-image:
    linear-gradient(45deg, transparent 50%, var(--neon-cyan) 50%),
    linear-gradient(135deg, var(--neon-cyan) 50%, transparent 50%);
  background-position:
    calc(100% - 14px) 12px,
    calc(100% - 8px) 12px;
  background-size: 6px 6px;
  background-repeat: no-repeat;
  padding-right: 26px;
}

.col-list,
.idx-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.sub-label {
  font-family: var(--font-retro);
  color: var(--neon-cyan);
  font-size: 1.05rem;
  letter-spacing: 0.15em;
  margin: 12px 0 6px;
  text-transform: uppercase;
}
.sub-label::before {
  content: "› ";
  color: var(--neon-magenta);
}

.row-count-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  padding: 8px 10px;
  background: rgba(0, 0, 0, 0.4);
  border: 1px dashed rgba(255, 244, 94, 0.4);
}
.row-count-wrap label {
  font-family: var(--font-retro);
  color: var(--neon-yellow);
  font-size: 1rem;
  letter-spacing: 0.1em;
  white-space: nowrap;
}

.checkbox-wrap {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  user-select: none;
  font-size: 0.8rem;
  color: var(--text-dim);
}
.checkbox-wrap input[type="checkbox"] {
  width: 14px;
  height: 14px;
  appearance: none;
  border: 1px solid var(--neon-magenta);
  background: rgba(0, 0, 0, 0.5);
  cursor: pointer;
  position: relative;
}
.checkbox-wrap input[type="checkbox"]:checked {
  background: var(--neon-magenta);
  box-shadow: 0 0 8px var(--neon-magenta);
}
.checkbox-wrap input[type="checkbox"]:checked::after {
  content: "✓";
  position: absolute;
  inset: 0;
  color: var(--bg-deep);
  font-size: 12px;
  text-align: center;
  line-height: 12px;
}

/* ═══════════════════════════════════════════════════════════════
     QUERIES
     ═══════════════════════════════════════════════════════════════ */
.query-arena {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 20px;
  align-items: stretch;
}
@media (max-width: 800px) {
  .query-arena {
    grid-template-columns: 1fr;
  }
  .vs {
    transform: rotate(90deg);
  }
}

.query-box {
  display: flex;
  flex-direction: column;
}
.query-box label {
  font-family: var(--font-display);
  font-size: 1.6rem;
  margin-bottom: 8px;
  letter-spacing: 0.05em;
}
.query-box.a label {
  color: var(--neon-magenta);
  text-shadow: 0 0 12px var(--neon-magenta);
}
.query-box.b label {
  color: var(--neon-cyan);
  text-shadow: 0 0 12px var(--neon-cyan);
}
.query-box textarea {
  font-family: var(--font-mono);
  min-height: 200px;
  resize: vertical;
  font-size: 0.95rem;
  line-height: 1.5;
  padding: 14px;
}
.query-box.a textarea {
  border-color: rgba(255, 43, 214, 0.4);
}
.query-box.a textarea:focus {
  border-color: var(--neon-magenta);
  box-shadow: 0 0 16px rgba(255, 43, 214, 0.4);
}
.query-box.b textarea {
  border-color: rgba(0, 240, 255, 0.4);
}

.vs {
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 3rem;
  color: var(--neon-yellow);
  text-shadow:
    0 0 16px var(--neon-yellow),
    0 0 32px rgba(255, 244, 94, 0.5);
  animation: pulse-vs 2s ease-in-out infinite;
}
@keyframes pulse-vs {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.1);
  }
}

/* ═══════════════════════════════════════════════════════════════
     EXECUTE BUTTON
     ═══════════════════════════════════════════════════════════════ */
.execute-wrap {
  text-align: center;
  margin: 36px 0;
}
#execute-btn {
  font-family: var(--font-display);
  font-size: 1.8rem;
  color: var(--neon-yellow);
  border: 2px solid var(--neon-yellow);
  padding: 18px 50px;
  letter-spacing: 0.15em;
  background: rgba(0, 0, 0, 0.4);
  text-shadow: 0 0 12px var(--neon-yellow);
  box-shadow:
    0 0 20px rgba(255, 244, 94, 0.3),
    inset 0 0 20px rgba(255, 244, 94, 0.05);
  position: relative;
  overflow: hidden;
}
#execute-btn:hover {
  color: var(--bg-deep);
  background: var(--neon-yellow);
  box-shadow:
    0 0 40px var(--neon-yellow),
    0 0 80px rgba(255, 244, 94, 0.5);
  text-shadow: none;
  transform: scale(1.03);
}
#execute-btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.3),
    transparent
  );
  transition: left 0.6s;
}
#execute-btn:hover::before {
  left: 100%;
}

/* ═══════════════════════════════════════════════════════════════
     RESULTS
     ═══════════════════════════════════════════════════════════════ */
#results {
  display: none;
}
#results.active {
  display: block;
  animation: results-in 0.4s ease-out;
}
@keyframes results-in {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.winner-banner {
  text-align: center;
  padding: 30px 20px;
  margin-bottom: 28px;
  border: 2px solid var(--neon-green);
  background:
    linear-gradient(135deg, rgba(57, 255, 90, 0.1), rgba(0, 240, 255, 0.05)),
    repeating-linear-gradient(
      45deg,
      transparent 0,
      transparent 8px,
      rgba(57, 255, 90, 0.04) 8px,
      rgba(57, 255, 90, 0.04) 9px
    );
  box-shadow:
    0 0 30px rgba(57, 255, 90, 0.3),
    inset 0 0 30px rgba(57, 255, 90, 0.08);
  position: relative;
}
.winner-banner .label {
  font-family: var(--font-retro);
  color: var(--neon-cyan);
  font-size: 1.1rem;
  letter-spacing: 0.4em;
  margin-bottom: 8px;
}
.winner-banner .winner {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.5rem);
  text-shadow: 0 0 20px currentColor;
  line-height: 1;
}
.winner-banner .verdict {
  margin-top: 14px;
  font-family: var(--font-retro);
  font-size: 1.3rem;
  color: var(--neon-yellow);
  letter-spacing: 0.1em;
}
.winner-banner.tie {
  border-color: var(--neon-yellow);
  box-shadow: 0 0 30px rgba(255, 244, 94, 0.3);
}
.winner-banner.error {
  border-color: var(--warn);
  box-shadow: 0 0 30px rgba(255, 94, 126, 0.3);
}

.results-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
@media (max-width: 800px) {
  .results-grid {
    grid-template-columns: 1fr;
  }
}

.result-card {
  border: 1px solid;
  padding: 20px;
  background: rgba(0, 0, 0, 0.4);
}
.result-card.a {
  border-color: var(--neon-magenta);
  box-shadow:
    0 0 16px rgba(255, 43, 214, 0.2),
    inset 0 0 24px rgba(255, 43, 214, 0.04);
}
.result-card.b {
  border-color: var(--neon-cyan);
  box-shadow:
    0 0 16px rgba(0, 240, 255, 0.2),
    inset 0 0 24px rgba(0, 240, 255, 0.04);
}
.result-card .card-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  margin-bottom: 14px;
}
.result-card.a .card-title {
  color: var(--neon-magenta);
  text-shadow: 0 0 8px var(--neon-magenta);
}
.result-card.b .card-title {
  color: var(--neon-cyan);
  text-shadow: 0 0 8px var(--neon-cyan);
}

.cost-display {
  font-family: var(--font-display);
  font-size: 2.5rem;
  color: var(--neon-yellow);
  text-shadow: 0 0 12px var(--neon-yellow);
  margin: 6px 0 4px;
}
.cost-label {
  font-family: var(--font-retro);
  font-size: 0.95rem;
  color: var(--text-dim);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 18px;
}

.step-list {
  list-style: none;
  margin: 12px 0;
}
.step-list li {
  padding: 8px 10px 8px 28px;
  margin-bottom: 6px;
  background: rgba(0, 0, 0, 0.4);
  border-left: 2px solid var(--neon-purple);
  position: relative;
  font-size: 0.88rem;
  line-height: 1.4;
}
.step-list li::before {
  content: "▶";
  position: absolute;
  left: 8px;
  top: 8px;
  color: var(--neon-purple);
  font-size: 0.7rem;
}
.step-list li .op {
  font-family: var(--font-retro);
  font-size: 1.05rem;
  color: var(--neon-green);
  letter-spacing: 0.1em;
  display: block;
  margin-bottom: 2px;
}
.step-list li .op.SEQ-SCAN {
  color: var(--warn);
}
.step-list li .cost-tag {
  float: right;
  color: var(--neon-yellow);
  font-family: var(--font-retro);
}

.insights {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px dashed rgba(185, 103, 255, 0.3);
}
.insights .insight,
.insights .warning {
  font-size: 0.85rem;
  padding: 6px 10px 6px 26px;
  margin-bottom: 4px;
  position: relative;
  line-height: 1.4;
}
.insights .insight {
  color: var(--neon-cyan);
  background: rgba(0, 240, 255, 0.05);
  border-left: 2px solid var(--neon-cyan);
}
.insights .insight::before {
  content: "ℹ";
  position: absolute;
  left: 8px;
  color: var(--neon-cyan);
}
.insights .warning {
  color: var(--warn);
  background: rgba(255, 94, 126, 0.06);
  border-left: 2px solid var(--warn);
}
.insights .warning::before {
  content: "⚠";
  position: absolute;
  left: 8px;
  color: var(--warn);
}

/* ═══════════════════════════════════════════════════════════════
     LOADING / TYPING
     ═══════════════════════════════════════════════════════════════ */
.typing {
  font-family: var(--font-retro);
  color: var(--neon-green);
  font-size: 1.4rem;
  text-shadow: 0 0 8px var(--neon-green);
  text-align: center;
  padding: 30px;
  letter-spacing: 0.15em;
}

/* ═══════════════════════════════════════════════════════════════
     FOOTER
     ═══════════════════════════════════════════════════════════════ */
footer {
  text-align: center;
  margin-top: 50px;
  color: var(--text-dim);
  font-family: var(--font-retro);
  font-size: 1rem;
  letter-spacing: 0.2em;
}
footer .heart {
  color: var(--neon-magenta);
  animation: pulse-heart 1.4s ease-in-out infinite;
  display: inline-block;
}
@keyframes pulse-heart {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.3);
  }
}

/* small util */
.actions-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.table-name-input {
  flex: 1;
}