*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --cream: #EEECEA;
  --cream-mid: #DDDAD4;
  --cream-dark: #C8C4BC;
  --white: #F9F9F8;
  --ink: #1A1714;
  --ink-soft: #6B6459;

  --mint: #B8EDE4;
  --mint-mid: #7DD8CC;
  --mint-dark: #4BBFB3;

  --metal-light: #ECECEC;
  --metal-mid: #C8C8C8;
  --metal-dark: #9A9A9A;

  --font-sans: 'DM Sans', system-ui, sans-serif;
  --font-mono: 'DM Mono', monospace;
  --font-hand: 'Nanum Pen Script', cursive;

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
}

body {
  min-height: 100vh;
  font-family: var(--font-sans);
  background: var(--cream);
  color: var(--ink);
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 40px 20px 60px;
}

.app {
  width: 100%;
  max-width: 400px;
}

.hero {
  margin-bottom: 40px;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mint-dark);
  margin-bottom: 10px;
}

.hero-title {
  font-size: 40px;
  font-weight: 300;
  line-height: 1.1;
  letter-spacing: -0.045em;
  color: var(--ink);
  margin-bottom: 10px;
}

.hero-title em {
  font-style: italic;
  font-weight: 300;
}

.hero-sub {
  font-size: 14px;
  color: var(--ink-soft);
}

.stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: 100px;
  margin-bottom: 36px;
  position: relative;
  filter: none;
}

.stage:has(.keycap.pressed) .keychain-wrap {
  transform: translateY(7px) rotate(2deg);
}

.keychain-wrap {
  position: absolute;
  top: -64px;
  right: 6px;

  display: flex;
  flex-direction: column;
  align-items: center;

  z-index: 50;

  transform: rotate(2deg);
  transform-origin: bottom center;

  transition: transform 130ms cubic-bezier(.2,.9,.25,1.25);
  will-change: transform;
}

.clip-body {
  width: 26px;
  height: 36px;
  border: 3px solid var(--metal-mid);
  border-radius: 13px 13px 3px 3px;
  background: linear-gradient(
    120deg,
    var(--metal-light) 0%,
    #D8D8D8 45%,
    var(--metal-mid) 70%,
    var(--metal-dark) 100%
  );
  position: relative;
  overflow: hidden;
}

.clip-shine {
  display: none;
}

.clip-gate {
  position: absolute;
  right: -5px;
  top: 5px;
  width: 5px;
  height: 14px;
  background: linear-gradient(90deg, var(--metal-mid), var(--metal-dark));
  border-radius: 0 4px 4px 0;
}

.spring-coil {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 10px;
}

.spring-line {
  width: 10px;
  height: 5px;
  border: 2px solid var(--metal-mid);
  border-radius: 50%;
}

.chain-ring {
  width: 13px;
  height: 13px;
  border: 2.5px solid var(--metal-mid);
  border-radius: 50%;
  background: linear-gradient(135deg, var(--metal-light), var(--metal-mid));
}

.keycap-assembly {
  display: flex;
  flex-direction: column;
  align-items: center;
  transform: rotate(-3deg);
  transform-origin: top center;
  position: relative;
}


/* 부드러운 바닥 그림자 */
.keycap-assembly::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -26px;
  width: 165px;
  height: 34px;
  transform: translateX(-50%) rotate(3deg);
  background: radial-gradient(
    ellipse,
    rgba(0, 0, 0, 0.18) 0%,
    rgba(0, 0, 0, 0.09) 42%,
    rgba(0, 0, 0, 0.02) 72%,
    transparent 100%
  );
  filter: blur(7px);
  z-index: -1;
  pointer-events: none;
}

.keycap {
  border: none;
  background: none;
  padding: 0;
  cursor: pointer;
  outline: none;
  -webkit-tap-highlight-color: transparent;
  position: relative;
  display: block;
  touch-action: manipulation;
}

.cap-top {
  position: relative;
  width: 178px;
  height: 168px;
  display: inline-block;
  transform-style: preserve-3d;
  transition: transform 130ms cubic-bezier(.2,.9,.25,1.25);
}

.cap-face {
  width: 178px;
  height: 168px;
  position: relative;
  overflow: hidden;
  z-index: 3;

  border-radius: 34px 34px 26px 26px;
  border: 1px solid rgba(0, 0, 0, 0.07);

  background:
    radial-gradient(circle at 52% 38%, rgba(255,255,255,0.42), transparent 45%),
    linear-gradient(160deg, #FFFDF9 0%, #F4F1EA 48%, #DED8CE 100%);

  clip-path: polygon(
    10% 0%,
    90% 0%,
    100% 12%,
    96% 88%,
    84% 100%,
    16% 100%,
    4% 88%,
    0% 12%
  );

  box-shadow:
    inset 0 4px 7px rgba(255,255,255,0.78),
    inset 0 -9px 15px rgba(0,0,0,0.07),
    inset -8px 0 12px rgba(0,0,0,0.035),
    0 7px 10px rgba(55, 45, 35, 0.12);

  transition:
    transform 130ms cubic-bezier(.2,.9,.25,1.25),
    box-shadow 130ms ease;
  will-change: transform, box-shadow;
}

.cap-face::before {
  content: "";
  position: absolute;
  inset: 13px 15px 18px;
  border-radius: 26px 26px 20px 20px;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.22), rgba(255,255,255,0.02)),
    radial-gradient(circle at 50% 100%, rgba(0,0,0,0.045), transparent 62%);
  box-shadow:
    inset 0 2px 3px rgba(255,255,255,0.46),
    inset 0 -4px 8px rgba(0,0,0,0.045);
  pointer-events: none;
  z-index: 1;
}

.cap-inner-ring {
  position: absolute;
  inset: 18px 20px 23px;
  border-radius: 24px 24px 18px 18px;
  border: 1px solid rgba(0,0,0,0.04);
  box-shadow: inset 0 0 8px rgba(0,0,0,0.03);
  pointer-events: none;
  z-index: 2;
}

.cap-side-right,
.cap-side-bottom,
.cap-corner {
  display: none;
}

.cap-art {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: 14px;
  z-index: 4;
}

.cap-label {
  font-family: var(--font-hand);
  font-size: 15px;
  color: var(--ink);
  letter-spacing: 0.01em;
  text-align: center;
  line-height: 1.2;
  margin-bottom: 2px;
  opacity: 0.88;
}

.cap-icon {
  display: flex;
  align-items: center;
  justify-content: center;
}

.cap-icon svg {
  width: 82px;
  height: 82px;
}

.ripple-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  border-radius: inherit;
  z-index: 5;
}

.ripple {
  position: absolute;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(77,191,179,0.2), transparent 70%);
  transform: scale(0);
  animation: ripple-go 420ms ease-out forwards;
  pointer-events: none;
}

@keyframes ripple-go {
  to {
    transform: scale(4.2);
    opacity: 0;
  }
}

/* 클릭 끊김 완화 */
.keycap.pressed .cap-face {
  transform: translate(5px, 7px) scale(0.99);

  box-shadow:
    inset 0 3px 6px rgba(255,255,255,0.55),
    inset 0 -5px 10px rgba(0,0,0,0.1),
    3px 3px 0 #b9b2a7,
    5px 7px 12px rgba(0,0,0,0.12);
}

.keycap.pressed .cap-side-right{
    transform:
        translateY(5px)
        skewY(12deg);
}

.keycap.pressed .cap-side-bottom{
    transform:
        translateY(5px)
        skewX(12deg);
}

.keycap.pressed .cap-corner{
    transform:
        translateY(5px);
}

.keycap:focus-visible .cap-face {
  outline: 2.5px solid var(--mint-dark);
  outline-offset: 3px;
}

.panel {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 26px 24px;
  border: 1px solid var(--cream-mid);
}

.panel-row {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.panel-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.panel-divider {
  height: 1px;
  background: var(--cream-mid);
  margin: 22px 0;
}

.icon-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 7px;
}

.icon-opt {
  width: 100%;
  aspect-ratio: 1;
  border: 1.5px solid var(--cream-mid);
  border-radius: var(--radius-sm);
  background: var(--cream);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 7px;
  transition: border-color 140ms, background 140ms, transform 120ms;
  outline: none;
  color: var(--ink);
}

.icon-opt svg {
  width: 100%;
  height: 100%;
}

.icon-opt:hover {
  background: rgba(185,237,228,0.35);
  border-color: var(--mint-mid);
  transform: translateY(-2px);
}

.icon-opt.active {
  background: rgba(185,237,228,0.45);
  border-color: var(--mint-dark);
  box-shadow: 0 0 0 3px rgba(77,191,179,0.16);
}

.icon-opt:focus-visible {
  outline: 2px solid var(--mint-dark);
  outline-offset: 2px;
}

.switch-chips {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.hero {
  margin-bottom: 18px;
}

.chip {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 9px 14px;
  border-radius: 999px;
  border: 1.5px solid var(--cream-mid);
  background: var(--cream);
  font-size: 13px;
  font-family: var(--font-sans);
  color: var(--ink-soft);
  cursor: pointer;
  transition: all 140ms;
  outline: none;
}

.chip-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}

.chip-hint {
  font-size: 11px;
  color: var(--ink-soft);
  opacity: 0.55;
  margin-left: 2px;
}

.chip:hover {
  border-color: var(--mint-mid);
  color: var(--ink);
}

.chip.active {
  background: var(--ink);
  color: var(--cream);
  border-color: var(--ink);
}

.chip.active .chip-hint {
  color: var(--cream-dark);
  opacity: 0.7;
}

.chip:focus-visible {
  outline: 2px solid var(--mint-dark);
  outline-offset: 2px;
}

.count-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--cream);
  border-radius: var(--radius-md);
  padding: 18px 20px;
}

.count-status {
  font-size: 12px;
  color: var(--mint-dark);
  margin-top: 4px;
  min-height: 18px;
}

.count-num {
  font-family: var(--font-mono);
  font-size: 38px;
  font-weight: 500;
  color: var(--ink);
  letter-spacing: -0.04em;
  line-height: 1;
  display: block;
}

@keyframes num-bump {
  0% {
    transform: scale(1);
  }

  45% {
    transform: scale(1.12);
    color: var(--mint-dark);
  }

  100% {
    transform: scale(1);
  }
}

.count-num.bump {
  animation: num-bump 180ms cubic-bezier(0.2, 0.8, 0.4, 1) forwards;
}

@media (max-width: 420px) {
  .keychain-wrap {
    right: -20px;
    top: -62px;
  }

  .hero-title {
    font-size: 34px;
  }

  .cap-top {
    width: 154px;
    height: 146px;
  }

  .cap-face {
    width: 178px;
    height: 168px;
    position: relative;
    overflow: hidden;
    z-index: 3;

    border-radius: 34px 34px 30px 30px;
    border: 1px solid rgba(0, 0, 0, 0.07);

    background:
      radial-gradient(circle at 50% 35%, rgba(255,255,255,0.38), transparent 48%),
      linear-gradient(160deg, #fffdf9 0%, #f3f0ea 50%, #ddd7cc 100%);

    box-shadow:
      inset 0 4px 8px rgba(255,255,255,0.75),
      inset 0 -8px 14px rgba(0,0,0,0.07),
      8px 8px 0 #b9b2a7,
      10px 12px 18px rgba(0,0,0,0.13);

    transition:
      transform 130ms cubic-bezier(.2,.9,.25,1.25),
      box-shadow 130ms ease;
  }

  .cap-icon svg {
    width: 68px;
    height: 68px;
  }

  .cap-side-right {
    right: -13px;
    top: 15px;
    width: 20px;
    height: 124px;
  }

  .cap-side-bottom {
    left: 14px;
    bottom: -15px;
    width: 130px;
    height: 24px;
  }

  .cap-corner {
    right: -13px;
    bottom: -15px;
    width: 24px;
    height: 24px;
  }

  .keycap-assembly {
    transform: rotate(-3deg) scale(0.94);
  }

  .keycap-assembly::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: -18px;
    width: 150px;
    height: 24px;
    transform: translateX(-50%) rotate(3deg);
    background: radial-gradient(
      ellipse,
      rgba(0,0,0,0.13) 0%,
      rgba(0,0,0,0.055) 55%,
      transparent 78%
    );
    filter: blur(7px);
    z-index: -1;
    pointer-events: none;
  }

  .icon-grid {
    grid-template-columns: repeat(6, 1fr);
    gap: 5px;
  }

  .icon-opt {
    padding: 5px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .count-num.bump,
  .ripple {
    animation: none;
  }

  .icon-opt:hover {
    transform: none;
  }

  .cap-top,
  .cap-face,
  .cap-side-right,
  .cap-side-bottom,
  .cap-corner {
    transition: none;
  }
}