.page {
  flex: 1;
  max-width: 680px;
  width: 100%;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* ---------- Tool card ---------- */
.tool {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

/* ---------- Tabs ---------- */
.tabs {
  display: flex;
  gap: 4px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 4px;
  margin-bottom: 20px;
}
.tab-btn {
  flex: 1;
  border: none;
  background: transparent;
  padding: 9px 16px;
  border-radius: 9px;
  font-family: "Noto Sans JP", sans-serif;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--muted);
  cursor: pointer;
  transition: background 140ms ease, color 140ms ease, box-shadow 140ms ease;
}
.tab-btn.active {
  background: var(--surface);
  color: var(--ink);
  font-weight: 700;
  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
}
.tab-pane { display: none; }
.tab-pane.active { display: block; }

/* ---------- Input blocks ---------- */
.block {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  margin-bottom: 10px;
}
.block-label {
  font-family: "JetBrains Mono", monospace;
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.block-label .count {
  font-family: "Noto Sans JP", sans-serif;
  font-size: 12px;
  letter-spacing: 0;
  text-transform: none;
  color: var(--muted);
}

/* ---------- Textarea ---------- */
textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 14px;
  font-family: "Noto Sans JP", sans-serif;
  font-size: 14px;
  background: var(--surface);
  color: var(--ink);
  resize: vertical;
  outline: none;
  transition: border-color 140ms ease, box-shadow 140ms ease;
  line-height: 1.7;
}
textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
textarea::placeholder { color: var(--muted); }

/* ---------- Range inputs ---------- */
.range-inputs {
  display: flex;
  align-items: flex-end;
  gap: 12px;
  flex-wrap: wrap;
}
.range-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.range-field label {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--muted);
  text-transform: uppercase;
}
.num-input {
  width: 110px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 12px;
  font-family: "JetBrains Mono", monospace;
  font-weight: 600;
  font-size: 18px;
  background: var(--surface);
  color: var(--ink);
  outline: none;
  transition: border-color 140ms ease, box-shadow 140ms ease;
  -moz-appearance: textfield;
  text-align: center;
}
.num-input::-webkit-outer-spin-button,
.num-input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.num-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.range-sep {
  font-family: "JetBrains Mono", monospace;
  font-size: 20px;
  color: var(--muted);
  padding-bottom: 10px;
}

/* ---------- Stepper ---------- */
.stepper-row {
  display: flex;
  align-items: center;
  gap: 12px;
}
.stepper {
  display: inline-flex;
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  overflow: hidden;
}
.stepper button {
  appearance: none;
  border: none;
  background: transparent;
  width: 36px;
  height: 36px;
  font-family: "JetBrains Mono", monospace;
  font-size: 18px;
  color: var(--sub);
  cursor: pointer;
  transition: background 140ms ease;
  display: grid;
  place-items: center;
  line-height: 1;
}
.stepper button:hover { background: var(--bg); }
.stepper input {
  width: 52px;
  border: none;
  outline: none;
  text-align: center;
  background: transparent;
  font-family: "JetBrains Mono", monospace;
  font-weight: 600;
  font-size: 15px;
  color: var(--ink);
  -moz-appearance: textfield;
}
.stepper input::-webkit-outer-spin-button,
.stepper input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.stepper-unit {
  font-size: 13px;
  color: var(--muted);
}

/* ---------- Draw button ---------- */
.draw-btn {
  appearance: none;
  width: 100%;
  border: none;
  background: var(--accent);
  color: white;
  font-family: "Noto Sans JP", sans-serif;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.04em;
  padding: 14px 20px;
  border-radius: var(--radius);
  cursor: pointer;
  margin-top: 4px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: background 140ms ease, transform 140ms ease;
}
.draw-btn:hover:not(:disabled) {
  background: var(--accent-deep);
  transform: translateY(-1px);
}
.draw-btn:active:not(:disabled) { transform: translateY(0); }
.draw-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
}

/* ---------- Error ---------- */
.error-msg {
  margin-top: 10px;
  padding: 10px 14px;
  color: var(--danger);
  font-size: 13px;
  font-weight: 500;
  background: var(--danger-soft);
  border-radius: var(--radius);
  display: none;
}
.error-msg.visible { display: block; }

/* ---------- Result area ---------- */
.result-area {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  display: none;
}
.result-area.visible { display: block; }

.result-meta {
  font-family: "JetBrains Mono", monospace;
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: 20px;
}
.result-meta b { color: var(--ink); font-weight: 600; }

/* ---------- Save button ---------- */
.save-btn {
  appearance: none;
  width: 100%;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--sub);
  font-family: "Noto Sans JP", sans-serif;
  font-weight: 500;
  font-size: 13px;
  padding: 9px 16px;
  border-radius: 999px;
  cursor: pointer;
  margin-top: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: background 140ms ease, border-color 140ms ease;
}
.save-btn:hover {
  background: var(--bg);
  border-color: var(--border);
}

/* ---------- Slot machine ---------- */
.slots-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
}

.slot {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.slot-box {
  width: 120px;
  height: 90px;
  background: var(--bg);
  border: 2px solid var(--border);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
  transition: border-color 300ms ease, background 300ms ease, box-shadow 300ms ease;
}
.slot-box::before,
.slot-box::after {
  content: "";
  position: absolute;
  left: 0; right: 0;
  height: 22px;
  pointer-events: none;
  z-index: 2;
}
.slot-box::before {
  top: 0;
  background: linear-gradient(to bottom, var(--bg), transparent);
}
.slot-box::after {
  bottom: 0;
  background: linear-gradient(to top, var(--bg), transparent);
}
.slot-val {
  font-family: "JetBrains Mono", monospace;
  font-weight: 700;
  font-size: 26px;
  color: var(--muted);
  text-align: center;
  padding: 0 10px;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  z-index: 1;
  transition: color 200ms ease;
}

.slot.is-spinning .slot-val {
  animation: reelSpin 90ms alternate infinite ease-in-out;
}
@keyframes reelSpin {
  from { transform: translateY(-5px); opacity: 0.45; }
  to   { transform: translateY(5px);  opacity: 0.85; }
}

.slot-box.is-stopped {
  border-color: var(--accent);
  background: var(--accent-soft);
  box-shadow: 0 6px 20px -10px rgba(232, 185, 74, 0.6);
}
.slot-box.is-stopped::before {
  background: linear-gradient(to bottom, var(--accent-soft), transparent);
}
.slot-box.is-stopped::after {
  background: linear-gradient(to top, var(--accent-soft), transparent);
}
.slot-box.is-stopped .slot-val {
  color: var(--accent-deep);
  animation: slotPop 380ms cubic-bezier(.2,.8,.3,1.35) forwards;
}
@keyframes slotPop {
  0%   { transform: scale(0.8) translateY(0); }
  65%  { transform: scale(1.1) translateY(0); }
  100% { transform: scale(1)   translateY(0); }
}

/* ---------- Bulk result (>5) ---------- */
.bulk-result {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.bulk-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 10px 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  opacity: 0;
  transform: translateY(8px);
  animation: fadeUp 220ms ease forwards;
}
@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
}
.bulk-val {
  font-weight: 700;
  font-size: 15px;
  color: var(--ink);
}

@media (max-width: 900px) {
  .slot-box { width: 100px; height: 78px; }
  .slot-val { font-size: 22px; }
  .slots-wrap { gap: 10px; }
}