/* Cache-busted physical calculator shell: the display and every key stay inside the device. */
.physical-calculator.calculator-device-v2 {
  --shell-top: #f3f6f4;
  --shell-mid: #d9e0dd;
  --shell-bottom: #b9c4c1;
  --shell-edge: #7c8987;
  --shell-ink: #1e2c32;
  --shell-muted: #4e5e61;
  --key-well: rgba(66, 80, 82, .13);
  --key-well-edge: rgba(64, 77, 80, .26);
  --display-bezel: #66736d;
  --display-bg: #c9d7c0;
  --display-ink: #172d26;
  --display-line: rgba(23, 45, 38, .22);
  --number-bg: #252e3a;
  --number-edge: #101620;
  --function-bg: #647178;
  --function-edge: #3c474d;
  --operator-bg: #0d766d;
  --operator-edge: #074a45;
  --memory-bg: #38536a;
  --memory-edge: #203548;
  --mode-bg: #465c63;
  --mode-edge: #293c42;
  position: relative;
  isolation: isolate;
  display: block;
  direction: ltr;
  box-sizing: border-box;
  width: min(100%, 438px);
  max-width: 100%;
  margin-inline: auto;
  padding: 25px 24px 25px;
  overflow: visible;
  border: 1px solid var(--shell-edge);
  border-radius: 28px 28px 48px 48px / 24px 24px 62px 62px;
  background: linear-gradient(105deg, rgba(255,255,255,.72), transparent 19%, transparent 80%, rgba(43,55,59,.12)), linear-gradient(150deg, var(--shell-top), var(--shell-mid) 57%, var(--shell-bottom));
  box-shadow: 0 3px 0 rgba(255,255,255,.9) inset, 0 -6px 0 rgba(48,61,64,.14) inset, 8px 0 0 -5px #65716f, -5px 0 0 -3px rgba(255,255,255,.82), 0 12px 0 -5px #354147, 0 26px 42px rgba(15,23,31,.24), 0 44px 70px rgba(15,23,31,.11);
  color: var(--shell-ink);
}
.physical-calculator.calculator-device-v2.scientific-device { width: min(100%, 506px); }
.calculator-device-v2 *, .calculator-device-v2 *::before, .calculator-device-v2 *::after { box-sizing: border-box; }
.calculator-device-v2::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 7px 9px auto;
  height: 38%;
  border-radius: 22px;
  background: linear-gradient(112deg, rgba(255,255,255,.4), transparent 46%);
  pointer-events: none;
}
.calculator-device-v2::after {
  content: "";
  position: absolute;
  inset: auto 20% 8px;
  height: 2px;
  border-radius: 50%;
  background: rgba(255,255,255,.55);
  pointer-events: none;
}
.calculator-device-v2 .device-topline {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 13px;
  color: var(--shell-ink);
}
.calculator-device-v2 .device-brand { font-size: 1rem; font-weight: 900; letter-spacing: .19em; line-height: 1; }
.calculator-device-v2 .device-model { color: var(--shell-muted); font-size: .65rem; font-weight: 850; letter-spacing: .1em; }
.calculator-device-v2 .device-power-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 18px; }
.calculator-device-v2 .device-power-row > span { color: var(--shell-muted); font-size: .53rem; font-weight: 850; letter-spacing: .08em; white-space: nowrap; }
.calculator-device-v2 .solar-panel {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  overflow: hidden;
  width: 150px;
  height: 34px;
  border: 3px solid #5c6663;
  border-radius: 3px;
  background: #493e37;
  box-shadow: 0 1px 0 rgba(255,255,255,.7), 0 2px 5px rgba(10,18,22,.28) inset;
}
.calculator-device-v2 .solar-panel i { border-right: 1px solid rgba(226,206,178,.23); background: linear-gradient(135deg, #725f4f, #453a34 62%, #624e42); }
.calculator-device-v2 .solar-panel i:last-child { border-right: 0; }
.calculator-device-v2 .physical-display {
  position: relative;
  overflow: hidden;
  min-height: 136px;
  padding: 12px 15px 13px;
  border: 5px solid var(--display-bezel);
  border-radius: 9px;
  background: linear-gradient(118deg, rgba(255,255,255,.18), transparent 42%), var(--display-bg);
  color: var(--display-ink);
  box-shadow: 0 4px 10px rgba(16,29,24,.28) inset, 0 1px 0 rgba(255,255,255,.85);
}
.calculator-device-v2 .physical-display::after { content: ""; position: absolute; inset: 0; background: linear-gradient(112deg, rgba(255,255,255,.13), transparent 38%); pointer-events: none; }
.calculator-device-v2 .display-meta { position: relative; z-index: 2; display: flex; align-items: center; justify-content: space-between; gap: 8px; min-height: 28px; margin-bottom: 4px; color: var(--display-ink); font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: .64rem; font-weight: 900; letter-spacing: .05em; }
.calculator-device-v2 .display-indicators { display: flex; align-items: center; gap: 9px; min-width: 0; }
.calculator-device-v2 .display-indicators b { font: inherit; }
.calculator-device-v2 .display-indicators b:empty { display: none; }
.calculator-device-v2 .display-meta button { min-width: 48px; min-height: 30px; padding: 3px 8px; border: 1px solid var(--display-line); border-radius: 4px; background: rgba(255,255,255,.13); color: var(--display-ink); font-family: inherit; font-size: .6rem; font-weight: 900; letter-spacing: 0; cursor: pointer; }
.calculator-device-v2 .display-meta button:hover { background: rgba(255,255,255,.3); }
.calculator-device-v2 .physical-display input { position: relative; z-index: 1; display: block; width: 100%; height: 37px; padding: 0; overflow: hidden; border: 0; border-bottom: 1px solid var(--display-line); outline: 0; background: transparent; color: var(--display-ink); font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 1.06rem; font-weight: 650; text-align: right; text-overflow: ellipsis; white-space: nowrap; }
.calculator-device-v2 .physical-display input::placeholder { color: var(--display-ink); opacity: .55; }
.calculator-device-v2 .physical-display input:focus-visible { border-bottom-color: var(--display-ink); outline: 2px solid var(--display-ink); outline-offset: 3px; border-radius: 2px; }
.calculator-device-v2 .physical-display output { position: relative; z-index: 1; display: block; overflow: hidden; min-height: 45px; padding-top: 4px; color: var(--display-ink); font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: clamp(1.7rem, 5vw, 2.1rem); font-weight: 800; line-height: 1.25; text-align: right; text-overflow: ellipsis; white-space: nowrap; }
.calculator-device-v2 .standalone-error { margin: 12px 2px 0; padding: 9px 11px; border-radius: 7px; font-size: .78rem; font-weight: 700; line-height: 1.5; }
.calculator-device-v2 .physical-keypad {
  display: grid;
  width: 100%;
  margin-top: 21px;
  padding: 15px 13px 18px;
  gap: 12px 9px;
  border: 1px solid var(--key-well-edge);
  border-radius: 17px 17px 22px 22px;
  background: var(--key-well);
  box-shadow: 0 3px 8px rgba(36,48,51,.18) inset, 0 1px 0 rgba(255,255,255,.58);
}
.calculator-device-v2 .standard-physical-keypad { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.calculator-device-v2 .scientific-physical-keypad { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.calculator-device-v2 .physical-key {
  position: relative;
  appearance: none;
  min-width: 0;
  min-height: 51px;
  margin: 0;
  padding: 8px 4px;
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 9px 9px 12px 12px / 8px 8px 10px 10px;
  background: var(--function-bg);
  color: #f7faf9;
  box-shadow: 0 4px 0 var(--function-edge), 0 6px 7px rgba(12,20,27,.23), 0 1px 0 rgba(255,255,255,.25) inset;
  font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: .88rem;
  font-weight: 800;
  line-height: 1.1;
  text-align: center;
  text-shadow: 0 1px 1px rgba(0,0,0,.28);
  cursor: pointer;
  transition: transform .1s ease, filter .1s ease;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}
.calculator-device-v2 .standard-physical-keypad .physical-key { min-height: 56px; font-size: 1rem; }
.calculator-device-v2 .physical-key:hover { filter: brightness(1.1); }
.calculator-device-v2 .physical-key:active { transform: translateY(3px); box-shadow: 0 1px 0 var(--function-edge), 0 2px 3px rgba(12,20,27,.2), 0 1px 0 rgba(255,255,255,.18) inset; }
.calculator-device-v2 .physical-key:focus-visible, .calculator-device-v2 .display-meta button:focus-visible { z-index: 2; outline: 3px solid #16a596; outline-offset: 3px; }
.calculator-device-v2 .key-main { position: relative; z-index: 1; display: block; }
.calculator-device-v2 .has-secondary { padding-top: 15px; }
.calculator-device-v2 .key-shift, .calculator-device-v2 .key-alpha { position: absolute; top: 3px; font-size: .46rem; font-weight: 850; line-height: 1; text-shadow: none; }
.calculator-device-v2 .key-shift { left: 4px; color: #ffe0a1; }
.calculator-device-v2 .key-alpha { right: 4px; color: #b8f4e7; }
.calculator-device-v2 .number-key { background: var(--number-bg); box-shadow: 0 4px 0 var(--number-edge), 0 6px 7px rgba(12,20,27,.25), 0 1px 0 rgba(255,255,255,.18) inset; font-size: 1.06rem; }
.calculator-device-v2 .number-key:active { box-shadow: 0 1px 0 var(--number-edge), 0 2px 3px rgba(12,20,27,.22); }
.calculator-device-v2 .operator-key { background: var(--operator-bg); box-shadow: 0 4px 0 var(--operator-edge), 0 6px 7px rgba(12,20,27,.22), 0 1px 0 rgba(255,255,255,.2) inset; font-size: 1.17rem; }
.calculator-device-v2 .operator-key:active { box-shadow: 0 1px 0 var(--operator-edge), 0 2px 3px rgba(12,20,27,.2); }
.calculator-device-v2 .edit-key { background: #a66c35; box-shadow: 0 4px 0 #70451f, 0 6px 7px rgba(12,20,27,.22), 0 1px 0 rgba(255,255,255,.2) inset; }
.calculator-device-v2 .danger-key { background: #a8464b; box-shadow: 0 4px 0 #713036, 0 6px 7px rgba(12,20,27,.22), 0 1px 0 rgba(255,255,255,.2) inset; }
.calculator-device-v2 .memory-key { background: var(--memory-bg); box-shadow: 0 4px 0 var(--memory-edge), 0 6px 7px rgba(12,20,27,.22), 0 1px 0 rgba(255,255,255,.18) inset; }
.calculator-device-v2 .mode-key { background: var(--mode-bg); box-shadow: 0 4px 0 var(--mode-edge), 0 6px 7px rgba(12,20,27,.22), 0 1px 0 rgba(255,255,255,.18) inset; font-size: .75rem; }
.calculator-device-v2 .shift-key { background: #9b6c2d; box-shadow: 0 4px 0 #68471c, 0 6px 7px rgba(12,20,27,.22), 0 1px 0 rgba(255,255,255,.18) inset; font-size: .7rem; }
.calculator-device-v2 .alpha-key { background: #267d72; box-shadow: 0 4px 0 #17544d, 0 6px 7px rgba(12,20,27,.22), 0 1px 0 rgba(255,255,255,.18) inset; font-size: .7rem; }
.calculator-device-v2 .shift-key[aria-pressed="true"], .calculator-device-v2 .alpha-key[aria-pressed="true"], .calculator-device-v2 .mode-key[aria-pressed="true"] { outline: 2px solid #fff; outline-offset: -4px; filter: brightness(1.16); }
.calculator-device-v2 .equals-key { background: #8de2d0; color: #12141f; box-shadow: 0 4px 0 #4a9e90, 0 6px 7px rgba(12,20,27,.22), 0 1px 0 rgba(255,255,255,.4) inset; font-size: 1.25rem; text-shadow: none; }
.calculator-device-v2 .key-span-2 { grid-column: span 2; }
.calculator-device-v2 .key-span-4 { grid-column: span 4; }
.calculator-device-v2 .device-status { min-height: 20px; margin: 13px 2px -4px; color: var(--shell-muted); font-size: .69rem; font-weight: 700; line-height: 1.45; text-align: center; }
.calculator-device-v2 .device-bottomline { display: flex; align-items: center; justify-content: space-between; margin-top: 14px; padding-inline: 3px; color: var(--shell-muted); font-size: .51rem; font-weight: 850; letter-spacing: .11em; }
.calculator-device-v2 .device-bottomline span:last-child { color: #0d766d; font-size: .54rem; }
html[data-theme="dark"] .physical-calculator.calculator-device-v2 {
  --shell-top: #3c4754;
  --shell-mid: #2a333f;
  --shell-bottom: #1b232d;
  --shell-edge: #596672;
  --shell-ink: #e4eeea;
  --shell-muted: #b5c2be;
  --key-well: rgba(4,10,16,.25);
  --key-well-edge: rgba(151,169,177,.18);
  --display-bezel: #17251f;
  --display-bg: #233e37;
  --display-ink: #d1f3df;
  --display-line: rgba(209,243,223,.23);
  --number-bg: #161d28;
  --number-edge: #080d14;
  --function-bg: #4a5864;
  --function-edge: #2b3741;
  --operator-bg: #216f68;
  --operator-edge: #124841;
  background: linear-gradient(105deg, rgba(255,255,255,.07), transparent 20%, transparent 80%, rgba(0,0,0,.17)), linear-gradient(150deg, var(--shell-top), var(--shell-mid) 57%, var(--shell-bottom));
  box-shadow: 0 2px 0 rgba(255,255,255,.13) inset, 0 -6px 0 rgba(0,0,0,.22) inset, 8px 0 0 -5px #121923, -5px 0 0 -3px rgba(255,255,255,.08), 0 12px 0 -5px #0b1118, 0 27px 43px rgba(0,0,0,.42);
}
html[data-theme="dark"] .calculator-device-v2::before { background: linear-gradient(112deg, rgba(255,255,255,.05), transparent 46%); }
html[data-theme="dark"] .calculator-device-v2::after { background: rgba(255,255,255,.1); }
html[data-theme="dark"] .calculator-device-v2 .solar-panel { border-color: #171d23; }
html[data-theme="dark"] .calculator-device-v2 .physical-display { box-shadow: 0 4px 11px rgba(0,0,0,.45) inset, 0 1px 0 rgba(255,255,255,.12); }
html[data-theme="dark"] .calculator-device-v2 .display-meta button:hover { background: rgba(255,255,255,.08); }
html[data-theme="dark"] .calculator-device-v2 .device-bottomline span:last-child { color: #8de2d0; }
@media (max-width: 600px) {
  .physical-calculator.calculator-device-v2 { padding: 21px 14px 22px; border-radius: 24px 24px 39px 39px / 21px 21px 49px 49px; }
  .calculator-device-v2 .device-topline { margin-bottom: 11px; }
  .calculator-device-v2 .device-power-row { margin-bottom: 15px; }
  .calculator-device-v2 .solar-panel { width: 133px; height: 30px; }
  .calculator-device-v2 .physical-display { min-height: 128px; padding: 10px 11px 11px; border-width: 4px; }
  .calculator-device-v2 .physical-keypad { margin-top: 18px; padding: 12px 9px 15px; gap: 11px 7px; border-radius: 14px 14px 19px 19px; }
  .calculator-device-v2 .scientific-physical-keypad { gap-inline: 6px; }
  .calculator-device-v2 .physical-key { min-height: 47px; padding-inline: 2px; border-radius: 8px 8px 10px 10px; font-size: .76rem; }
  .calculator-device-v2 .standard-physical-keypad .physical-key { min-height: 51px; font-size: .93rem; }
  .calculator-device-v2 .number-key { font-size: .98rem; }
  .calculator-device-v2 .has-secondary { padding-top: 14px; }
  .calculator-device-v2 .key-shift, .calculator-device-v2 .key-alpha { font-size: .41rem; }
}
@media (max-width: 360px) {
  .physical-calculator.calculator-device-v2 { padding-inline: 10px; }
  .calculator-device-v2 .physical-keypad { padding-inline: 7px; gap-inline: 5px; }
  .calculator-device-v2 .physical-key { min-height: 45px; font-size: .68rem; }
  .calculator-device-v2 .device-power-row > span { font-size: .46rem; }
}
@media (prefers-reduced-motion: reduce) {
  .calculator-device-v2 .physical-key { transition: none; }
}