.tech-page {
  width: min(960px, 100%);
  margin: 0 auto 24px;
}

.tech-panel {
  position: relative;
  border: 2px solid var(--border);
  background: rgba(10, 10, 10, 0.96);
  padding: clamp(16px, 4vw, 30px);
  box-shadow: 8px 8px 0 #03070d;
}

.tech-panel::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--neon), var(--hivis), transparent);
}

.tech-eyebrow,
.tech-status,
.tech-meta,
.tech-help {
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
}

.tech-eyebrow {
  color: var(--neon);
  font-size: 0.75rem;
  text-transform: uppercase;
}

.tech-panel h1 {
  margin: 8px 0 10px;
  font-size: clamp(2rem, 9vw, 4.5rem);
  line-height: 0.9;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.tech-panel h1 span,
.tech-accent {
  color: var(--hivis);
}

.tech-help {
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.6;
  margin-bottom: 18px;
}

.tech-status {
  min-height: 44px;
  margin: 16px 0;
  padding: 11px 12px;
  border-left: 4px solid var(--neon);
  background: #050a12;
  color: #dbeafe;
  font-size: 0.8rem;
  line-height: 1.4;
}

.tech-status[data-tone="error"] {
  border-color: #ff5252;
  color: #ffb4b4;
}

.tech-status[data-tone="success"] {
  border-color: var(--hivis);
  color: #ffd0ad;
}

.tech-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.tech-button,
.symbol-button,
.tile-button,
.filter-button {
  min-height: 56px;
  border-radius: 0;
  font: 900 1rem var(--font-display);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  touch-action: manipulation;
}

.tech-button {
  flex: 1 1 180px;
  display: grid;
  place-items: center;
  padding: 14px 18px;
  border: 2px solid #000;
  background: var(--hivis);
  color: #000;
  box-shadow: 4px 4px 0 #000;
  text-align: center;
  text-decoration: none;
}

.tech-button--secondary {
  border-color: var(--neon);
  background: #02060b;
  color: var(--neon);
  box-shadow: 4px 4px 0 #0c2847;
}

.tech-button:disabled,
.symbol-button:disabled,
.tile-button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
  box-shadow: none;
}

.tech-button:focus-visible,
.symbol-button:focus-visible,
.tile-button:focus-visible,
.filter-button:focus-visible,
.initials-input:focus-visible {
  outline: 3px solid #fff;
  outline-offset: 3px;
}

.tech-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px;
  margin: 14px 0;
  color: var(--neon);
  font-size: 0.75rem;
  text-transform: uppercase;
}

.code-slots,
.symbol-pad {
  display: grid;
  grid-template-columns: repeat(var(--slot-count, 4), minmax(56px, 1fr));
  gap: 10px;
}

.code-slot,
.symbol-button {
  min-height: 64px;
  border: 2px solid var(--border);
  background: #02060b;
  color: #fff;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 1.35rem;
}

.code-slot {
  color: var(--hivis);
  border-color: #25496e;
}

.symbol-pad {
  margin-top: 12px;
}

.symbol-button {
  color: var(--neon);
}

.guess-log {
  display: grid;
  gap: 8px;
  margin-top: 18px;
}

.guess-row {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 8px;
  padding: 10px;
  border: 1px solid var(--border);
  background: #030303;
  font: 0.76rem var(--font-mono);
}

.guess-row strong {
  color: var(--neon);
  letter-spacing: 0.16em;
}

.circuit-grid {
  display: grid;
  grid-template-columns: repeat(var(--grid-size, 4), minmax(56px, 1fr));
  gap: clamp(6px, 1.5vw, 12px);
  width: min(620px, 100%);
  margin: 18px auto;
}

.tile-button {
  position: relative;
  aspect-ratio: 1;
  min-width: 56px;
  padding: 5px;
  overflow: hidden;
  border: 2px solid #25496e;
  background: #020914;
  color: var(--neon);
}

.tile-button--powered {
  border-color: var(--hivis);
  color: #fff;
  background: #1a0a00;
  box-shadow: inset 0 0 18px rgba(255, 107, 0, 0.28);
}

.tile-icon {
  display: block;
  font: 700 clamp(1.4rem, 7vw, 3rem) var(--font-mono);
  line-height: 1;
  transform: rotate(calc(var(--rotation, 0) * 90deg));
  transition: transform 0.18s ease;
}

.tile-role {
  position: absolute;
  left: 4px;
  top: 3px;
  color: var(--hivis);
  font: 700 0.55rem var(--font-mono);
  letter-spacing: 0.08em;
}

.tile-index {
  position: absolute;
  right: 4px;
  bottom: 3px;
  color: var(--muted);
  font: 0.6rem var(--font-mono);
}

.initials-panel[hidden] {
  display: none;
}

.initials-panel {
  margin-top: 20px;
  padding: 18px;
  border: 2px solid var(--hivis);
  background: #120800;
}

.initials-panel label {
  display: block;
  margin-bottom: 8px;
  color: var(--hivis);
  font: 700 0.8rem var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.initials-input {
  width: 100%;
  min-height: 56px;
  padding: 10px;
  border: 2px solid var(--neon);
  background: #000;
  color: #fff;
  font: 700 1.5rem var(--font-mono);
  letter-spacing: 0.25em;
  text-align: center;
  text-transform: uppercase;
}

.board-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0;
}

.filter-button {
  flex: 1 1 140px;
  padding: 10px;
  border: 2px solid var(--border);
  background: #050505;
  color: var(--muted);
}

.filter-button[aria-pressed="true"] {
  border-color: var(--neon);
  color: var(--neon);
}

.board-list {
  width: 100%;
  border-collapse: collapse;
  font: 0.78rem var(--font-mono);
}

.board-list th,
.board-list td {
  padding: 12px 8px;
  border-bottom: 1px solid var(--border);
  text-align: left;
}

.board-list th {
  color: var(--neon);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.board-list td:first-child,
.board-list td:nth-child(2) {
  color: var(--hivis);
  font-weight: 700;
}

@media (hover: hover) {
  .tech-button:hover:not(:disabled),
  .symbol-button:hover:not(:disabled),
  .tile-button:hover:not(:disabled),
  .filter-button:hover {
    transform: translate(-2px, -2px);
    border-color: var(--hivis);
  }
}

@media (max-width: 560px) {
  .tech-panel {
    padding: 14px 10px 20px;
    box-shadow: none;
  }

  .code-slots,
  .symbol-pad {
    gap: 6px;
  }

  .guess-row {
    grid-template-columns: 1fr;
  }

  .board-scroll {
    overflow-x: auto;
  }

  .board-list {
    min-width: 520px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .tile-icon {
    transition: none;
  }
}