#loading-screen {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  transition: opacity 0.3s;
}
.loader-ring {
  width: 36px;
  height: 36px;
  border: 3px solid var(--border);
  border-top-color: var(--theme);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.container {
  max-width: 1800px;
  margin: 0 auto;
  padding: 24px clamp(20px, 3vw, 56px);
  position: relative;
  z-index: 1;
  opacity: 0;
  transition: opacity 0.3s;
}
.container.loaded { opacity: 1; }

header { display: flex; flex-direction: column; align-items: center; gap: 16px; margin-bottom: 24px; position: relative; width: 100%; }
header .back-btn { align-self: flex-start; }
h1 { font-size: clamp(1.8rem, 5vw, 2.4rem); }

.main-layout { display: grid; grid-template-columns: 1fr 340px; gap: 24px; align-items: start; }
.sticky-sidebar { position: sticky; top: 20px; display: flex; flex-direction: column; gap: 16px; }

.section-title {
  margin-bottom: 16px;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--theme);
}

.label, .curse-pill, .lv-badge { text-transform: none; letter-spacing: normal; }

.settings-grid { display: flex; flex-direction: column; gap: 18px; }
.input-group label { display: block; margin-bottom: 8px; font-size: 0.85rem; font-weight: 500; color: var(--text-dim); }

input[type="number"] { width: 100%; padding: 10px; font-size: 1.25rem; font-weight: 700; text-align: center; }
input[type="number"]:disabled { opacity: 0.5; cursor: not-allowed; }

.mode-selector { display: grid; gap: 6px; }
.mode-selector.cols-3 { grid-template-columns: repeat(3, 1fr); }
.mode-selector.cols-2 { grid-template-columns: repeat(2, 1fr); }
.mode-selector .mode-btn { padding: 10px 6px; font-size: 0.85rem; text-align: center; }

.mode-selector [data-diff="casual"].active  { border-color: var(--casual); background: color-mix(in srgb, var(--casual) 18%, var(--surface-2)); }
.mode-selector [data-diff="extreme"].active { border-color: var(--extreme); background: color-mix(in srgb, var(--extreme) 18%, var(--surface-2)); }

.curse-toggle-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  font: inherit;
  font-weight: 600;
  color: var(--text-dim);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: color var(--ease), background var(--ease), border-color var(--ease);
}
.curse-toggle-btn:hover { color: var(--text); border-color: var(--border-strong); }
.curse-toggle-btn.active {
  color: var(--text);
  border-color: var(--casual);
  background: color-mix(in srgb, var(--casual) 15%, var(--surface-2));
}
.discount-list { display: flex; flex-direction: column; gap: 8px; }
.toggle-name { display: flex; align-items: center; gap: 10px; min-width: 0; }
.toggle-icon { width: 28px; height: 28px; flex-shrink: 0; object-fit: contain; border-radius: 6px; }
.curse-pill {
  padding: 2px 8px;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-faint);
  border: 1px solid var(--border);
  border-radius: 999px;
}
.curse-toggle-btn.active .curse-pill { color: #0e0e11; background: var(--casual); border-color: var(--casual); }

.upgrades-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 10px; }

.upgrade-item {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  height: 72px;
  padding: 10px 14px;
  background: var(--surface-2);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  user-select: none;
  transition: background var(--ease), border-color var(--ease), transform 0.18s ease, box-shadow 0.18s ease;
}
@media (hover: hover) {
  .upgrade-item:hover:not(.disabled):not(.casual-hidden):not(.extreme-hidden) { border-color: var(--border-strong); }
}
.upgrade-item.active { border-color: var(--theme); background: color-mix(in srgb, var(--theme) 12%, var(--surface-2)); }

.upgrade-item.disabled { opacity: 0.3; pointer-events: none; }
.upgrade-item.casual-hidden,
.upgrade-item.extreme-hidden { display: none; }

.icon-wrapper {
  flex-shrink: 0;
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--bg);
  border-radius: 8px;
}
.icon-wrapper img { width: 100%; height: 100%; object-fit: contain; padding: 3px; }

.info { flex: 1; min-width: 0; display: flex; flex-direction: column; justify-content: center; }
.name { font-size: 0.95rem; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.price-tag { font-size: 0.8rem; color: var(--text-dim); }

.stack-indicator { display: flex; gap: 4px; margin-top: 5px; }
.stack-indicator:empty { display: none; }
.stack-dot { width: 14px; height: 4px; background: var(--border-strong); border-radius: 2px; transition: background var(--ease); }
.stack-dot.filled { background: var(--theme); }

.lv-badge {
  flex-shrink: 0;
  margin-left: auto;
  padding: 2px 7px;
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--text-faint);
  border: 1px solid var(--border);
  border-radius: 6px;
}

.total-card { text-align: center; }
.total-val { margin: 4px 0; font-size: 3.2rem; font-weight: 700; line-height: 1.1; color: var(--theme); font-variant-numeric: tabular-nums; }
.formula-text { margin-bottom: 14px; font-size: 0.75rem; color: var(--text-faint); }
#curse-indicator { margin-top: 6px; font-size: 0.72rem; font-weight: 600; color: var(--casual); opacity: 0; transition: opacity var(--ease); }

.reset-all-btn {
  width: 100%;
  padding: 11px;
  font: inherit;
  font-weight: 600;
  color: var(--danger);
  background: transparent;
  border: 1px solid color-mix(in srgb, var(--danger) 45%, transparent);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--ease);
}
.reset-all-btn:hover { background: color-mix(in srgb, var(--danger) 12%, transparent); }

.mobile-settings-overlay {
  position: fixed;
  left: 0;
  bottom: 0;
  width: 100%;
  max-height: 88vh;
  max-height: 88dvh;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 0 18px calc(24px + env(safe-area-inset-bottom, 0px));
  background: var(--surface);
  border-top: 1px solid var(--border-strong);
  border-radius: 18px 18px 0 0;
  z-index: 2000;
  visibility: hidden;
  transform: translateY(100%);
  transition: transform 0.25s ease, visibility 0s linear 0.25s;
}
.mobile-settings-overlay.open {
  visibility: visible;
  transform: translateY(0);
  box-shadow: 0 -12px 40px rgba(0, 0, 0, 0.45);
  transition: transform 0.25s ease, visibility 0s;
}
.drawer-head {
  position: sticky;
  top: 0;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 0 -18px 16px;
  padding: 10px 10px 10px 18px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.drawer-close {
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 1.3rem;
  cursor: pointer;
}
.mobile-backdrop {
  position: fixed;
  inset: 0;
  z-index: 1999;
  background: rgba(0, 0, 0, 0.55);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}
.mobile-backdrop.open { opacity: 1; pointer-events: auto; }
body.view-prot .mobile-backdrop,
body.rotating .mobile-backdrop { display: none; }
#mobile-settings-content .section-title { display: none; }

.mobile-bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 80px;
  display: none;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  background: var(--surface);
  border-top: 1px solid var(--border);
  z-index: 1001;
}
.mobile-total-wrap .label { display: block; }
.mobile-total-wrap .price { font-size: 1.8rem; font-weight: 700; color: var(--theme); }
.mobile-actions { display: flex; gap: 10px; }
.mobile-reset,
.mobile-settings-btn {
  height: 46px;
  font: inherit;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
}
.mobile-reset { width: 46px; color: var(--danger); background: transparent; border: 1px solid color-mix(in srgb, var(--danger) 45%, transparent); }
.mobile-settings-btn { padding: 0 20px; color: #0e0e11; background: var(--theme); border: none; }

@media (max-width: 1000px) {
  .main-layout { grid-template-columns: 1fr; }
  .sticky-sidebar { display: none; }
  .mobile-bottom-nav { display: flex; }
  .container { padding-bottom: 100px; }
}

@keyframes glow-pulse {
  0%, 100% { text-shadow: 0 0 0 transparent; }
  50%      { text-shadow: 0 0 18px color-mix(in srgb, var(--theme) 45%, transparent); }
}

.container.loaded .main-layout > .card,
.container.loaded .sticky-sidebar > .card { animation: rise 0.5s ease-out backwards; }
.container.loaded .sticky-sidebar > .card:nth-child(2) { animation-delay: 0.08s; }
.container.loaded header { animation: rise 0.5s ease-out backwards; }

.upgrade-item { animation: rise 0.45s ease-out backwards; }
.upgrade-item { animation-delay: calc(0.17s + var(--i, 0) * 0.02s); }

@media (hover: hover) {
  .upgrade-item:hover:not(.disabled):not(.casual-hidden):not(.extreme-hidden) {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.35);
  }
}
.upgrade-item:active:not(.disabled) { transform: translateY(0) scale(0.985); }
.upgrade-item.active .icon-wrapper { box-shadow: 0 0 0 1px var(--theme), 0 0 12px color-mix(in srgb, var(--theme) 35%, transparent); }
.icon-wrapper { transition: box-shadow var(--ease); }

.mode-btn, .curse-toggle-btn, .reset-all-btn { transition: transform 0.12s ease, background var(--ease), border-color var(--ease), color var(--ease); }
.mode-btn:active, .curse-toggle-btn:active, .reset-all-btn:active, .mobile-reset:active, .mobile-settings-btn:active { transform: scale(0.96); }

.total-val { animation: glow-pulse 4s ease-in-out infinite; }

@media (prefers-reduced-motion: reduce) {
  .container.loaded .main-layout > .card,
  .container.loaded .sticky-sidebar > .card,
  .container.loaded header,
  .upgrade-item,
  .total-val { animation: none; }
  .upgrade-item:hover:not(.disabled) { transform: none; }
}

#prot-view, #toPrice { --theme: var(--casual); }
body.view-prot { --theme: var(--casual); }

#toPrice, #prot-view { display: none; }
body.view-prot #toPrice { display: flex; }
body.view-prot #prot-view { display: block; }
body.view-prot #toProt,
body.view-prot #main-ui,
body.view-prot .mobile-bottom-nav,
body.view-prot .mobile-settings-overlay { display: none !important; }

html.entered .upgrade-item:not(.buying),
html.entered .container.loaded header,
html.entered .container.loaded .sticky-sidebar > .card { animation: none !important; }

.view-arrow {
  position: fixed;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 50;
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--theme);
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 0 0 0 color-mix(in srgb, var(--theme) 40%, transparent);
  transition: color var(--ease), border-color var(--ease), box-shadow 0.25s ease, transform 0.15s ease, opacity 0.2s;
}
.view-arrow.left { right: auto; left: 18px; }
.view-arrow:hover {
  border-color: var(--theme);
  box-shadow: 0 0 20px color-mix(in srgb, var(--theme) 35%, transparent);
  transform: translateY(-50%) scale(1.08);
}
.view-arrow:active { transform: translateY(-50%) scale(0.94); }
.view-arrow svg { transition: transform 0.2s ease; }
#toProt:hover svg { transform: translateX(3px); }
#toPrice:hover svg { transform: translateX(-3px); }

body.rotating { overflow: hidden; }
body.rotating .view-arrow,
body.rotating .mobile-bottom-nav,
body.rotating .mobile-settings-overlay { opacity: 0; pointer-events: none; }
body.rotating #main-ui.wheel,
body.rotating #prot-view.wheel {
  display: block !important;
  position: absolute;
  top: 0; left: 0; right: 0;
  margin: 0 auto;
  opacity: 1;
  transform-origin: 50% var(--pivot, 150vmax);
  will-change: transform;
  backface-visibility: hidden;
}

.prot-container { opacity: 1; max-width: 1300px; }
.prot-layout {
  display: grid;
  grid-template-columns: minmax(280px, 1fr) minmax(0, 1.7fr);
  gap: 20px;
  align-items: stretch;
}
.prot-grid { display: flex; flex-direction: column; gap: 18px; margin-bottom: 20px; }

.prot-results { --theme: var(--casual); }

.prot-calc-btn {
  width: 100%;
  padding: 12px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  background: color-mix(in srgb, var(--theme) 22%, var(--surface-2));
  border: 1px solid var(--theme);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--ease), transform 0.12s ease;
}
.prot-calc-btn:hover { background: color-mix(in srgb, var(--theme) 35%, var(--surface-2)); }
.prot-calc-btn:active { transform: scale(0.98); }

.prot-result {
  margin-top: 20px;
  padding: 16px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-dim);
}
.prot-results .prot-result { margin-top: 16px; }
.prot-result strong { color: var(--text); }

.prot-banner {
  text-align: center;
  padding: 14px;
  margin-bottom: 16px;
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  color: var(--text-dim);
  border: 1px solid var(--theme);
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--theme) 10%, transparent);
}
.prot-banner span {
  display: block;
  margin-top: 4px;
  font-size: 2.4rem;
  font-weight: 700;
  letter-spacing: 0;
  color: var(--theme);
}

.prot-line { padding: 4px 0; font-size: 0.9rem; border-bottom: 1px solid var(--border); }
.prot-line:last-child { border-bottom: 0; }

@media (max-width: 900px) {
  .view-arrow { width: 44px; height: 44px; right: 10px; top: auto; bottom: 100px; transform: none; }
  .view-arrow.left { left: 10px; right: auto; }
  .view-arrow:hover, .view-arrow:active { transform: scale(1.05); }
  .prot-layout { grid-template-columns: 1fr; }
}

#main-ui header:has(.header-note) {
  margin-bottom: 16px;
  padding-bottom: 0;
}
.header-note {
  margin: 2px 0 0;
  font-size: 0.8rem;
  line-height: 1.3;
  color: var(--text-faint);
  text-align: center;
}
.header-note strong {
  color: var(--text-dim);
  font-weight: 600;
}

.prot-left { display: flex; flex-direction: column; gap: 20px; }
.prot-breakdown { max-height: 340px; overflow-y: auto; margin-top: 6px; padding-right: 6px; scrollbar-width: thin; scrollbar-color: var(--border-strong) transparent; }
.prot-breakdown::-webkit-scrollbar { width: 6px; }
.prot-breakdown::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 3px; }
.next-card .input-group { margin-bottom: 14px; }
.next-result { margin-top: 0; max-height: 340px; overflow-y: auto; font-size: 0.9rem; scrollbar-width: thin; scrollbar-color: var(--border-strong) transparent; }
.next-result:empty { display: none; }
.next-line { display: flex; justify-content: space-between; gap: 12px; padding: 4px 0; border-bottom: 1px solid var(--border); }
.next-line:last-child { border-bottom: 0; }
.next-line .price { color: var(--text); font-weight: 600; }
.next-line.short { color: var(--danger); }
.next-line.short .price { color: var(--danger); }

.buy-fields { display: none; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 10px; }
html.buy-on .buy-fields { display: grid; }
.buy-fields label { margin-bottom: 6px; font-size: 0.75rem; }
.buy-fields input[type="number"] { padding: 8px; font-size: 1rem; }

.buy-toggle.active {
  border-color: var(--theme);
  background: color-mix(in srgb, var(--theme) 15%, var(--surface-2));
}
.buy-toggle.active .curse-pill { background: var(--theme); border-color: var(--theme); }

.upgrade-item.sold { display: none; }

.upgrade-item.unaffordable { border-color: color-mix(in srgb, var(--danger) 40%, transparent); }
.upgrade-item.unaffordable .price-tag { color: var(--danger); font-weight: 600; }

.upgrade-item.locked { opacity: 0.4; cursor: not-allowed; }
.upgrade-item.locked .lv-badge { color: var(--danger); border-color: color-mix(in srgb, var(--danger) 50%, transparent); }

.total-val.negative { color: var(--danger); }

@media (min-width: 1001px) {
  #main-ui {
    height: 100vh;
    height: 100dvh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    padding-top: 14px;
    padding-bottom: 16px;
  }
  #main-ui header { flex-shrink: 0; }
  #main-ui .main-layout {
    flex: 1;
    min-height: 0;
    align-items: stretch;
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 24px;
  }
  #main-ui.container { max-width: 1700px; }
  #main-ui .main-layout > .card:first-child { display: flex; flex-direction: column; min-height: 0; align-self: start; max-height: 100%; }
  #main-ui .grid-head { flex-shrink: 0; }
  #main-ui .upgrades-grid {
    flex: 0 1 auto;
    min-height: 0;
    overflow-y: auto;
    padding-right: 4px;
    grid-auto-rows: minmax(54px, 72px);
    scrollbar-width: thin;
    scrollbar-color: var(--border-strong) transparent;
  }
  #main-ui .sticky-sidebar {
    position: static;
    min-height: 0;
    overflow-y: auto;
    padding-right: 4px;
    scrollbar-width: thin;
    scrollbar-color: var(--border-strong) transparent;
  }
  #main-ui .sticky-sidebar > .card { flex-shrink: 0; }

  #main-ui header,
  #main-ui header:has(.header-note) { gap: 2px; margin-bottom: 10px; }
  #main-ui header .back-btn { position: absolute; left: 0; top: 0; }
  #main-ui h1 { font-size: 1.9rem; }
  #main-ui .header-note { margin: 0; }

  #main-ui .card { padding: 16px; }
  #main-ui .section-title { margin-bottom: 10px; }
  #main-ui .settings-grid { gap: 12px; }
  #main-ui .input-group label { margin-bottom: 6px; }
  #main-ui .total-val { font-size: 2.6rem; }

  #main-ui .grid-head { margin-bottom: 10px; }
  #main-ui .upgrades-grid { gap: 10px; }
  #main-ui .upgrade-item {
    height: 100%;
    min-height: 0;
    padding: 6px 12px;
    gap: 10px;
  }
  #main-ui .icon-wrapper { width: 38px; height: 38px; }
  #main-ui .name { font-size: 0.92rem; line-height: 1.2; }
  #main-ui .price-tag { font-size: 0.78rem; line-height: 1.2; }
  #main-ui .stack-indicator { margin-top: 3px; }
  #main-ui .stack-dot { height: 3px; }
}

.upgrade-item.buying { pointer-events: none; animation: sell-out 0.32s ease-in forwards; }
@keyframes sell-out {
  0%   { transform: scale(1); opacity: 1; filter: brightness(1); }
  100% { transform: scale(0.92); opacity: 0; }
}

.stack-dot.pop { animation: dot-pop 0.35s ease-out; }
@keyframes dot-pop {
  0%   { transform: scaleY(0.4) scaleX(0.6); }
  60%  { transform: scaleY(1.8) scaleX(1.15); }
  100% { transform: none; }
}

.purchases-card { display: none; border-color: color-mix(in srgb, var(--theme) 28%, var(--border)); }
html.buy-on .purchases-card { display: block; animation: rise 0.35s ease-out; }
html:not(.buy-on) .purchases-group { display: none; }

.purchases-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.purchases-head .curse-pill,
.purchases-label .curse-pill { color: var(--theme); border-color: color-mix(in srgb, var(--theme) 45%, transparent); }
.purchases-label { display: flex !important; align-items: center; justify-content: space-between; }

.bump { display: inline-block; animation: bump 0.32s ease-out; }
@keyframes bump {
  0%   { transform: scale(1); }
  40%  { transform: scale(1.1); }
  100% { transform: scale(1); }
}

.purchase-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: min(200px, 20vh);
  overflow-y: auto;
  padding-right: 4px;
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) transparent;
}
.purchase-list::-webkit-scrollbar { width: 5px; }
.purchase-list::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 3px; }
.purchases-group .purchase-list { max-height: 220px; }

.log-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
  margin-bottom: 14px;
  padding: 4px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.log-tab {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 7px 8px;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  white-space: nowrap;
  color: var(--text-faint);
  background: transparent;
  border: 0;
  border-radius: 7px;
  cursor: pointer;
  transition: color var(--ease), background var(--ease);
}
.log-tab:hover { color: var(--text); }
.log-tab.active { color: var(--text); background: var(--surface-2); box-shadow: 0 0 0 1px var(--border-strong); }
.log-count {
  min-width: 20px;
  padding: 1px 6px;
  font-size: 0.7rem;
  line-height: 1.4;
  text-align: center;
  color: var(--text-dim);
  background: var(--surface-2);
  border-radius: 999px;
}
.log-tab.active .log-count { color: #0e0e11; background: var(--theme); }
.log-panel[hidden] { display: none; }

.log-actions { display: grid; grid-template-columns: auto 1fr; gap: 8px; margin-top: 12px; }

.purchase-btn {
  padding: 10px;
  font: inherit;
  font-weight: 700;
  color: #0e0e11;
  background: var(--theme);
  border: 1px solid var(--theme);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: opacity var(--ease), transform 0.12s ease, box-shadow 0.18s ease;
}
.purchase-btn:hover:not(:disabled) { box-shadow: 0 0 16px color-mix(in srgb, var(--theme) 40%, transparent); }
.purchase-btn:active:not(:disabled) { transform: scale(0.97); }
.purchase-btn:disabled { opacity: 0.3; cursor: not-allowed; }

.history-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: min(300px, 32vh);
  overflow-y: auto;
  padding-right: 4px;
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) transparent;
}
.purchases-group .history-list { max-height: 260px; }
.history-batch {
  flex-shrink: 0;
  padding: 10px 12px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 10px;
}
.history-head { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; }
.history-title { display: flex; align-items: baseline; gap: 8px; font-size: 0.9rem; font-weight: 700; color: var(--text); }
.history-lv { font-size: 0.72rem; font-weight: 600; color: var(--theme); }
.history-total { font-size: 0.9rem; font-weight: 700; color: var(--danger); font-variant-numeric: tabular-nums; }
.history-sub { margin-top: 2px; font-size: 0.72rem; color: var(--text-faint); font-variant-numeric: tabular-nums; }
.history-items { margin-top: 8px; padding-top: 8px; border-top: 1px solid var(--border); display: flex; flex-direction: column; gap: 6px; }
.history-item { display: flex; align-items: center; gap: 8px; font-size: 0.82rem; }
.history-item img { flex-shrink: 0; width: 24px; height: 24px; padding: 2px; object-fit: contain; background: var(--bg); border-radius: 6px; }
.history-name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--text-dim); }
.history-name em { margin-left: 6px; font-style: normal; font-size: 0.7rem; font-weight: 600; color: var(--text-faint); }
.history-price { flex-shrink: 0; color: var(--text-dim); font-variant-numeric: tabular-nums; }
.history-clear {
  width: 100%;
  margin-top: 10px;
  padding: 6px;
  font: inherit;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-faint);
  background: transparent;
  border: 0;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: color var(--ease);
}
.history-clear:hover { color: var(--danger); }

.purchase-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 14px 0;
  text-align: center;
  color: var(--text-faint);
}
.purchase-empty svg { margin-bottom: 4px; opacity: 0.7; }
.purchase-empty strong { font-size: 0.85rem; font-weight: 600; color: var(--text-dim); }
.purchase-empty span { font-size: 0.75rem; }

.purchase-row {
  position: relative;
  display: flex;
  align-items: center;
  flex-shrink: 0;
  gap: 10px;
  min-height: 50px;
  padding: 7px 10px 7px 12px;
  overflow: hidden;
  background: linear-gradient(90deg, color-mix(in srgb, var(--theme) 9%, var(--surface-2)), var(--surface-2) 70%);
  border: 1px solid var(--border);
  border-radius: 10px;
  transition: border-color var(--ease);
}
.purchase-row::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--theme);
}
.purchase-row:hover { border-color: var(--border-strong); }
.purchase-row.fresh { animation: purchase-in 0.35s ease-out; }
@keyframes purchase-in {
  0%   { opacity: 0; transform: translateY(-8px); }
  100% { opacity: 1; transform: none; }
}
.purchase-icon {
  flex-shrink: 0;
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.purchase-icon img { width: 100%; height: 100%; padding: 3px; object-fit: contain; }

.purchase-info { flex: 1; min-width: 0; }
.purchase-name { font-size: 0.88rem; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.purchase-meta { display: flex; align-items: center; gap: 6px; margin-top: 2px; font-size: 0.7rem; color: var(--text-faint); white-space: nowrap; }
.purchase-tag {
  padding: 1px 6px;
  font-weight: 600;
  color: var(--text-dim);
  background: var(--bg);
  border-radius: 5px;
}
.purchase-price { flex-shrink: 0; font-size: 0.9rem; font-weight: 700; color: var(--danger); font-variant-numeric: tabular-nums; }

.purchase-summary {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-top: 12px;
  padding-top: 12px;
  font-size: 0.8rem;
  color: var(--text-dim);
  border-top: 1px solid var(--border);
}
.purchase-spent { font-size: 1.05rem; font-weight: 700; color: var(--theme); font-variant-numeric: tabular-nums; }

.upgrade-item.filtered { display: none; }

.grid-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 16px; }
.grid-head .section-title,
#main-ui .grid-head .section-title { margin-bottom: 0; }
.upgrade-search {
  width: 100%;
  max-width: 240px;
  padding: 8px 12px;
  font: inherit;
  font-size: 0.85rem;
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color var(--ease);
}
.upgrade-search::placeholder { color: var(--text-faint); }
.upgrade-search:focus { border-color: var(--theme); }

.grid-empty { padding: 28px 0; text-align: center; font-size: 0.9rem; color: var(--text-faint); }
.grid-empty[hidden] { display: none; }

.purchases-actions { display: flex; align-items: center; gap: 8px; }
.undo-btn {
  padding: 10px 14px;
  font: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-dim);
  background: transparent;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: color var(--ease), border-color var(--ease), opacity var(--ease);
}
.undo-btn:hover:not(:disabled) { color: var(--text); border-color: var(--theme); }
.undo-btn:disabled { opacity: 0.4; cursor: not-allowed; }

.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  z-index: 3000;
  max-width: calc(100vw - 40px);
  padding: 10px 18px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 12px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }
@media (max-width: 1000px) { .toast { bottom: 96px; } }

@media (min-width: 1001px) and (max-height: 860px) {
  #main-ui h1 { font-size: 1.5rem; }
  #main-ui .header-note { display: none; }
  #main-ui .card { padding: 12px; }
  #main-ui .settings-grid { gap: 8px; }
  #main-ui .input-group label { margin-bottom: 4px; font-size: 0.78rem; }
  #main-ui .mode-selector .mode-btn { padding: 7px 4px; }
  #main-ui input[type="number"] { padding: 7px; font-size: 1.05rem; }
  #main-ui .curse-toggle-btn { padding: 7px 12px; }
  #main-ui .total-val { font-size: 2rem; }
  #main-ui .formula-text { margin-bottom: 8px; }
  #main-ui .purchase-list { max-height: 120px; }
}
@media (min-width: 1001px) and (max-height: 640px) {
  #main-ui h1 { display: none; }
  #main-ui header { margin-bottom: 6px; }
}

.dp-overlay {
  position: fixed; inset: 0; z-index: 1200;
  background: rgba(0, 0, 0, 0.55);
  opacity: 0; pointer-events: none;
  transition: opacity 0.2s ease;
}
.dp-overlay.active { opacity: 1; pointer-events: auto; }

.dp-panel {
  position: fixed; top: 0; right: -100%; z-index: 1201;
  display: flex; flex-direction: column;
  width: 100%; max-width: 340px; height: 100%;
  padding: 24px 20px;
  background: var(--surface);
  border-left: 1px solid var(--border);
  transition: right 0.25s ease;
}
.dp-panel.active { right: 0; }

.dp-head {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 16px; padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
}
.dp-close { padding: 4px 8px; font-size: 1.2rem; line-height: 1; color: var(--text-faint); background: none; border: none; cursor: pointer; }
.dp-close:hover { color: var(--text); }

.dp-actions { display: flex; gap: 8px; margin-bottom: 10px; }
.dp-actions .btn { flex: 1; padding: 9px 12px; font-size: 0.88rem; }
.dp-sub { min-height: 1.1em; margin-bottom: 8px; font-size: 0.8rem; color: var(--text-faint); }

.dp-list {
  flex: 1; overflow-y: auto;
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 8px; align-content: start;
  padding-right: 4px;
}
.dp-item {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 12px;
  font-size: 0.9rem; color: var(--text-dim);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer; user-select: none;
  transition: color var(--ease), background var(--ease), border-color var(--ease);
}
.dp-item:hover { color: var(--text); border-color: var(--border-strong); }
.dp-item input { width: 16px; height: 16px; accent-color: var(--theme); cursor: pointer; }
.dp-item:has(input:checked) {
  color: var(--text);
  background: color-mix(in srgb, var(--theme) 18%, var(--surface-2));
  border-color: var(--theme);
}
.dp-item.beyond { opacity: 0.7; border-style: dashed; }
.dp-more { padding: 0; font: inherit; font-size: 0.8rem; color: var(--theme); background: none; border: none; cursor: pointer; text-decoration: underline; }
.dp-more:hover { color: var(--text); }

@media (max-width: 1000px) {
  html { -webkit-text-size-adjust: 100%; }
  button, .mode-btn, .upgrade-item { touch-action: manipulation; }
  .container { padding: 16px 14px calc(104px + env(safe-area-inset-bottom, 0px)); }
  .card { padding: 14px; }
  header { gap: 12px; margin-bottom: 16px; }
  .back-btn { padding: 10px 16px; }
  .grid-head { flex-direction: column; align-items: stretch; gap: 10px; margin-bottom: 12px; }
  .upgrade-search { max-width: none; padding: 12px 14px; font-size: 1rem; }
  .upgrades-grid { grid-template-columns: repeat(auto-fill, minmax(min(100%, 280px), 1fr)); gap: 8px; }
  .upgrade-item { height: 68px; padding: 8px 12px; }
  .mode-selector .mode-btn { padding: 12px 6px; }
  .curse-toggle-btn { padding: 12px 14px; }
  .mobile-bottom-nav {
    height: calc(76px + env(safe-area-inset-bottom, 0px));
    padding: 0 16px env(safe-area-inset-bottom, 0px);
  }
  .mobile-reset, .mobile-settings-btn { height: 48px; }
  .mobile-reset { width: 48px; }
  .mobile-settings-btn { padding: 0 24px; }
  .toast { bottom: calc(96px + env(safe-area-inset-bottom, 0px)); }
  .view-arrow { bottom: calc(96px + env(safe-area-inset-bottom, 0px)); }
}

@media (max-width: 900px) {
  .container.prot-container { padding-bottom: calc(88px + env(safe-area-inset-bottom, 0px)); }
  body.view-prot .view-arrow.left { bottom: calc(16px + env(safe-area-inset-bottom, 0px)); }
  .prot-line, .next-line { font-size: 0.85rem; overflow-wrap: anywhere; }
  .prot-banner span { font-size: 2rem; }
  .prot-breakdown, .next-result { max-height: 300px; }
  .dp-panel { padding-bottom: calc(24px + env(safe-area-inset-bottom, 0px)); }
  .dp-item { padding: 12px; }
}

@media (max-width: 360px) {
  .container { padding-left: 10px; padding-right: 10px; }
  .total-val { font-size: 2.6rem; }
  .mobile-total-wrap .price { font-size: 1.5rem; }
}