/* WEB-OPEN-SHIFT-V01A — local Rail construction and explanation surface. */

.open-shift-screen {
  display: grid;
  align-content: start;
  gap: 12px;
  padding: max(8px, env(safe-area-inset-top)) 7px max(20px, env(safe-area-inset-bottom));
}

.open-shift-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 11px;
  border: 1px solid var(--line-soft);
  border-radius: 12px;
  background: color-mix(in srgb, var(--panel) 92%, transparent);
  box-shadow: 0 10px 36px rgba(0, 0, 0, 0.38);
  backdrop-filter: blur(16px);
}

.open-shift-title {
  margin: 3px 0 0;
  color: var(--line);
  font-size: clamp(1.15rem, 5vw, 1.8rem);
  line-height: 1;
  letter-spacing: 0.04em;
}

.open-shift-modes {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 7px;
}

.open-shift-mode {
  min-width: 0;
  min-height: 58px;
  padding: 8px 7px;
  border-color: var(--line-soft);
  color: var(--muted);
  background: color-mix(in srgb, var(--panel) 94%, transparent);
  font-size: clamp(0.58rem, 2.2vw, 0.72rem);
  line-height: 1.15;
}

.open-shift-mode strong,
.open-shift-mode small {
  display: block;
}

.open-shift-mode small {
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.78em;
  letter-spacing: 0.06em;
}

.open-shift-mode.is-active {
  border-color: var(--line);
  color: #04100f;
  background: var(--line);
  box-shadow: 0 0 22px color-mix(in srgb, var(--line) 24%, transparent);
}

.open-shift-mode:disabled {
  opacity: 0.58;
  filter: none;
}

.open-shift-lab,
.open-shift-explanation,
.open-shift-register-panel,
.open-shift-sleeping-panel {
  border: 1px solid var(--line-soft);
  border-radius: 14px;
  background: color-mix(in srgb, var(--panel) 94%, transparent);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.018);
}

.open-shift-lab {
  position: relative;
  overflow: hidden;
  padding: 12px 8px 14px;
}

.open-shift-lab::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(color-mix(in srgb, var(--void) 74%, transparent), color-mix(in srgb, var(--void) 90%, transparent)),
    var(--board);
  background-position: center top;
  background-size: cover;
  opacity: 0.44;
  filter: saturate(0.86) contrast(1.08);
}

.open-shift-lab > * {
  position: relative;
  z-index: 1;
}

.open-shift-toolbar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 9px;
  align-items: end;
  margin-bottom: 10px;
}

.open-shift-field {
  display: grid;
  gap: 5px;
  min-width: 0;
}

.open-shift-field label,
.open-shift-section-title {
  color: var(--line);
  font-size: 0.58rem;
  font-weight: 950;
  letter-spacing: 0.11em;
}

.open-shift-skin-select {
  width: 100%;
  min-height: 44px;
  padding: 0 10px;
  border: 1px solid var(--line-soft);
  border-radius: 8px;
  color: var(--text);
  background: var(--panel);
  font: inherit;
  font-size: 0.72rem;
  font-weight: 850;
}

.open-shift-rail-heading {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  margin: 4px 2px 5px;
  color: var(--muted);
  font-size: 0.54rem;
  font-weight: 850;
  letter-spacing: 0.07em;
}

.open-shift-rail-heading strong {
  color: var(--line);
  font-size: 0.72rem;
}

.open-shift-rail-heading span:last-child { text-align: right; }

.open-shift-axis {
  display: grid;
  grid-template-columns: repeat(5, var(--card-w));
  justify-content: center;
  align-items: center;
  column-gap: clamp(3px, 1vw, 7px);
  color: var(--text);
  font-size: clamp(0.56rem, 2.2vw, 0.74rem);
  font-weight: 950;
  text-align: center;
}

.open-shift-axis .axis-name {
  grid-column: 1 / -1;
  color: var(--line);
  font-size: 0.52rem;
  letter-spacing: 0.13em;
}

.open-shift-axis-top { margin-bottom: 5px; }
.open-shift-axis-bottom { margin-top: 5px; }
.open-shift-axis-bottom .axis-name { order: 2; margin-top: 2px; }

.open-shift-axis.is-gold .axis-name {
  color: #FDB515;
  text-shadow: 0 0 8px rgba(255, 195, 11, 0.52);
}

.open-shift-axis.is-black .axis-name {
  color: #f6effb;
  text-shadow: 0 0 8px rgba(112, 12, 112, 0.66);
}

.open-shift-rail {
  --card-w: clamp(58px, 16.3vw, 112px);
  display: flex;
  justify-content: center;
  gap: clamp(3px, 1vw, 7px);
}

.open-shift-slot {
  position: relative;
  flex: 0 0 var(--card-w);
  width: var(--card-w);
  height: var(--card-h);
  min-height: 0;
  padding: 0;
  border: 0;
  border-radius: calc(var(--card-w) * 0.07);
  color: inherit;
  background: transparent;
}

.open-shift-slot .card {
  width: 100%;
  height: 100%;
}

.open-shift-slot.is-selected::after {
  content: "SLOT";
  position: absolute;
  z-index: 14;
  left: 50%;
  bottom: -7px;
  transform: translateX(-50%);
  padding: 2px 5px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: #04100f;
  background: var(--line);
  font-size: 0.42rem;
  font-weight: 1000;
  letter-spacing: 0.08em;
  pointer-events: none;
}

.open-shift-slot.is-selected .card {
  border-color: var(--line);
  box-shadow:
    0 0 0 2px color-mix(in srgb, var(--line) 56%, transparent),
    0 0 22px color-mix(in srgb, var(--line) 24%, transparent),
    0 8px 18px rgba(0, 0, 0, 0.66);
}

.open-shift-slot .card.empty {
  color: var(--line);
  background: color-mix(in srgb, var(--panel) 80%, transparent);
}

.open-shift-star-trace {
  z-index: 12;
}

.open-shift-controls,
.open-shift-example-grid {
  display: grid;
  gap: 7px;
  margin-top: 12px;
}

.open-shift-controls { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.open-shift-example-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.open-shift-controls button,
.open-shift-example-grid button {
  min-height: 44px;
  padding: 7px 8px;
  font-size: clamp(0.56rem, 2.2vw, 0.7rem);
  line-height: 1.15;
}

.open-shift-explanation {
  padding: 13px;
}

.open-shift-status {
  margin: 0;
  color: var(--line);
  font-size: clamp(0.92rem, 4vw, 1.3rem);
  line-height: 1.1;
  letter-spacing: 0.035em;
}

.open-shift-status[data-color="gold"] { color: #FDB515; }
.open-shift-status[data-color="black"] { color: #d7b8ec; }
.open-shift-status[data-color="mixed"] { color: var(--text); }

.open-shift-summary {
  margin: 7px 0 0;
  color: var(--text);
  font-size: 0.78rem;
  line-height: 1.45;
}

.open-shift-paths {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-top: 11px;
}

.open-shift-path {
  min-width: 0;
  padding: 9px;
  border: 1px solid color-mix(in srgb, var(--line) 28%, transparent);
  border-radius: 9px;
  background: color-mix(in srgb, var(--void) 62%, transparent);
}

.open-shift-path h3 {
  color: var(--line);
}

.open-shift-path p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.67rem;
  line-height: 1.4;
}

.open-shift-path-register {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 4px;
  margin-top: 7px;
}

.open-shift-path-bit {
  display: grid;
  place-items: center;
  min-height: 32px;
  padding: 3px;
  border: 1px solid color-mix(in srgb, var(--line) 22%, transparent);
  border-radius: 5px;
  color: var(--muted);
  background: color-mix(in srgb, var(--panel-2) 84%, transparent);
  font-size: 0.54rem;
  font-weight: 900;
  line-height: 1.1;
  text-align: center;
}

.open-shift-path-bit b {
  display: block;
  color: var(--text);
  font-size: 0.82rem;
}

.open-shift-path-bit.is-gold b { color: #FDB515; }
.open-shift-path-bit.is-black b { color: #d7b8ec; }

.open-shift-register-panel {
  padding: 13px 10px 15px;
}

.open-shift-register-copy {
  margin: 5px 0 11px;
  color: var(--muted);
  font-size: 0.68rem;
  line-height: 1.4;
}

.open-shift-register {
  --card-w: clamp(54px, 10vw, 78px);
  display: grid;
  grid-template-columns: repeat(8, var(--card-w));
  justify-content: center;
  gap: 8px;
}

.open-shift-register button.open-shift-register-button {
  position: relative;
  width: var(--card-w);
  min-width: 0;
  min-height: 0;
  padding: 0;
  border: 0 !important;
  border-radius: calc(var(--card-w) * 0.07);
  color: inherit !important;
  background: transparent !important;
  box-shadow: none !important;
}

.open-shift-register-button .card {
  width: var(--card-w);
  height: calc(var(--card-w) * 1.52);
}

.open-shift-register-button.is-on-rail .card {
  opacity: 0.52;
  filter: saturate(0.58) brightness(0.76);
}

.open-shift-register-button.is-target .card {
  border-color: var(--line);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--line) 52%, transparent), 0 0 18px color-mix(in srgb, var(--line) 24%, transparent);
}

.open-shift-register-badge {
  position: absolute;
  z-index: 14;
  right: -3px;
  bottom: -3px;
  min-width: 20px;
  padding: 3px 4px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: #04100f;
  background: var(--line);
  font-size: 0.46rem;
  font-weight: 1000;
  pointer-events: none;
}

.open-shift-sleeping-panel {
  padding: 13px;
  color: var(--muted);
  font-size: 0.72rem;
  line-height: 1.45;
}

@media (max-width: 700px) {
  .open-shift-toolbar {
    grid-template-columns: 1fr;
  }

  .open-shift-example-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .open-shift-paths {
    grid-template-columns: 1fr;
  }

  .open-shift-register {
    --card-w: min(21vw, 76px);
    grid-template-columns: repeat(4, var(--card-w));
    gap: 8px 6px;
  }
}

@media (max-width: 430px) {
  .open-shift-screen {
    padding-left: 4px;
    padding-right: 4px;
  }

  .open-shift-header {
    padding: 9px 7px;
  }

  .open-shift-header button {
    min-height: 38px;
    padding: 0 9px;
    font-size: 0.58rem;
  }

  .open-shift-modes {
    gap: 4px;
  }

  .open-shift-mode {
    min-height: 54px;
    padding: 6px 3px;
  }

  .open-shift-lab {
    padding-left: 3px;
    padding-right: 3px;
  }

  .open-shift-rail,
  .open-shift-axis {
    --card-w: clamp(55px, 17.4vw, 72px);
    column-gap: 3px;
    gap: 3px;
  }

  .open-shift-controls {
    grid-template-columns: 1fr 1fr;
  }
}