:root {
  --bg: #f8fbff;
  --bg-glow-1: rgba(255, 124, 130, 0.2);
  --bg-glow-2: rgba(79, 195, 255, 0.16);
  --panel: rgba(255, 255, 255, 0.9);
  --panel-border: rgba(9, 16, 29, 0.14);
  --hero-from: rgba(255, 244, 246, 0.94);
  --hero-to: rgba(239, 248, 255, 0.94);
  --text: #1a2538;
  --muted: #5f708e;
  --accent: #ff7c82;
  --accent-soft: #ffaab2;
  --accent-2: #4fc3ff;
  --danger: #d94f61;
  --input-bg: rgba(255, 255, 255, 0.92);
  --input-border: rgba(26, 37, 56, 0.18);
  --stage-border: rgba(26, 37, 56, 0.22);
  --stage-bg-from: rgba(255, 255, 255, 0.85);
  --stage-bg-to: rgba(255, 124, 130, 0.14);
  --hint-pill-bg: rgba(255, 255, 255, 0.88);
  --hint-pill-border: rgba(26, 37, 56, 0.16);
  --unit-card-bg: rgba(255, 255, 255, 0.82);
  --unit-card-border: rgba(26, 37, 56, 0.12);
  --toggle-bg: rgba(26, 37, 56, 0.08);
  --toggle-border: rgba(26, 37, 56, 0.14);
  --radius: 18px;
  color-scheme: light;
}

:root[data-theme="dark"] {
  --bg: #070b12;
  --bg-glow-1: rgba(79, 195, 255, 0.18);
  --bg-glow-2: rgba(255, 159, 68, 0.12);
  --panel: rgba(14, 20, 31, 0.92);
  --panel-border: rgba(255, 255, 255, 0.12);
  --hero-from: rgba(12, 20, 31, 0.95);
  --hero-to: rgba(9, 13, 22, 0.95);
  --text: #ecf2ff;
  --muted: #97a4bf;
  --accent: #4fc3ff;
  --accent-soft: #7bd7ff;
  --accent-2: #ff9f44;
  --danger: #ff7c82;
  --input-bg: rgba(0, 0, 0, 0.25);
  --input-border: rgba(255, 255, 255, 0.16);
  --stage-border: rgba(255, 255, 255, 0.25);
  --stage-bg-from: rgba(255, 255, 255, 0.06);
  --stage-bg-to: rgba(0, 0, 0, 0.18);
  --hint-pill-bg: rgba(7, 11, 18, 0.72);
  --hint-pill-border: rgba(255, 255, 255, 0.14);
  --unit-card-bg: rgba(255, 255, 255, 0.05);
  --unit-card-border: rgba(255, 255, 255, 0.08);
  --toggle-bg: rgba(255, 255, 255, 0.06);
  --toggle-border: rgba(255, 255, 255, 0.14);
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Outfit", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 18% 10%, var(--bg-glow-1), transparent 28%),
    radial-gradient(circle at 85% 30%, var(--bg-glow-2), transparent 32%),
    var(--bg);
  min-height: 100vh;
}

.app-shell {
  width: min(430px, 100%);
  margin: 0 auto;
  padding: 14px 14px 32px;
}

.hero {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--panel-border);
  min-height: 210px;
  background: linear-gradient(140deg, var(--hero-from), var(--hero-to));
}

.theme-toggle-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  z-index: 2;
  border: 1px solid var(--toggle-border);
  border-radius: 999px;
  background: var(--toggle-bg);
  color: var(--text);
  font-family: "Space Grotesk", sans-serif;
  font-size: 12px;
  font-weight: 700;
  padding: 7px 10px;
}

.scene-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.scene-overlay--hero {
  background:
    radial-gradient(circle at 16% 24%, rgba(255, 255, 255, 0.95) 0 2px, transparent 3px),
    radial-gradient(circle at 82% 18%, rgba(255, 255, 255, 0.85) 0 1.5px, transparent 2.5px),
    radial-gradient(circle at 71% 64%, rgba(255, 255, 255, 0.8) 0 1.5px, transparent 2.5px),
    radial-gradient(circle at 38% 76%, rgba(255, 255, 255, 0.8) 0 1.5px, transparent 2.5px),
    linear-gradient(90deg, transparent 0 20%, rgba(255, 255, 255, 0.22) 20% 20.8%, transparent 20.8% 44%, rgba(255, 255, 255, 0.22) 44% 44.8%, transparent 44.8% 100%),
    linear-gradient(180deg, transparent 0 24%, rgba(255, 255, 255, 0.18) 24% 24.8%, transparent 24.8% 100%);
  opacity: 0.35;
  mix-blend-mode: screen;
}

.scene-overlay--stage {
  background:
    radial-gradient(circle at 12% 22%, rgba(255, 255, 255, 0.9) 0 2px, transparent 3px),
    radial-gradient(circle at 88% 30%, rgba(255, 255, 255, 0.8) 0 1.8px, transparent 2.8px),
    radial-gradient(circle at 20% 82%, rgba(255, 255, 255, 0.75) 0 1.5px, transparent 2.5px),
    radial-gradient(circle at 78% 76%, rgba(255, 255, 255, 0.85) 0 1.6px, transparent 2.6px),
    linear-gradient(90deg, transparent 0 10%, rgba(255, 255, 255, 0.16) 10% 10.6%, transparent 10.6% 40%, rgba(255, 255, 255, 0.16) 40% 40.6%, transparent 40.6% 100%),
    linear-gradient(180deg, transparent 0 42%, rgba(255, 255, 255, 0.16) 42% 42.6%, transparent 42.6% 100%);
  opacity: 0.3;
  mix-blend-mode: screen;
}

.hero-art {
  position: relative;
  display: flex;
  width: min(50%, 260px);
  margin: 0 auto;
  opacity: 0.8;
  filter: drop-shadow(0 12px 20px rgba(0, 0, 0, 0.35));

}

.hero-copy {
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 10px;
  backdrop-filter: blur(2px);
}

.eyebrow {
  margin: 0;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 11px;
  font-weight: 700;
  font-family: "Space Grotesk", sans-serif;
}

h1 {
  margin: 4px 0 0;
  font-family: "Space Grotesk", sans-serif;
  font-size: 24px;
  line-height: 1.08;
}

.panel {
  margin-top: 12px;
  border-radius: var(--radius);
  border: 1px solid var(--panel-border);
  background: var(--panel);
  padding: 14px;
}

.result-topbar {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.view-toggle {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.toggle-btn {
  border: 1px solid var(--toggle-border);
  border-radius: 999px;
  padding: 9px 12px;
  background: var(--toggle-bg);
  color: var(--text);
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
}

.toggle-btn.is-active {
  background: linear-gradient(120deg, var(--accent), var(--accent-soft));
  color: #06131c;
  border-color: transparent;
}

h2,
h3 {
  margin: 0 0 8px;
  font-family: "Space Grotesk", sans-serif;
}

.grid-two {
  display: grid;
  gap: 10px;
  grid-template-columns: 1fr 1fr;
}

.input-panel .grid-two {
  grid-template-columns: 1fr;
}

label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 13px;
  color: var(--muted);
}

input {
  width: 100%;
  border: 1px solid var(--input-border);
  background: var(--input-bg);
  border-radius: 10px;
  color: var(--text);
  padding: 10px;
  font-size: 15px;
}

input:focus {
  outline: 1px solid var(--accent);
  border-color: var(--accent);
}

.actions {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}

.input-panel .actions {
  justify-content: flex-start;
}

.btn {
  border: none;
  border-radius: 99px;
  padding: 10px 14px;
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
  color: #03121d;
  background: linear-gradient(120deg, var(--accent), var(--accent-soft));
  flex: 1;
}

.input-panel .btn {
  flex: 0 0 50%;
}

.error {
  color: var(--danger);
  min-height: 1.1em;
  margin: 10px 0 0;
  font-size: 13px;
}

.distance-headline {
  text-align: center;
}

.label {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.09em;
}

.distance-number {
  margin: 4px 0;
  font-size: 30px;
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
}

.distance-sub {
  margin: 0;
  color: var(--muted);
}

.anim-stage {
  position: relative;
  margin: 12px auto 8px;
  height: 140px;
  width: 100%;
  border-radius: 14px;
  border: 1px dashed var(--stage-border);
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at center, var(--stage-bg-from), var(--stage-bg-to));
}

.anim-stage img {
  position: relative;
  max-height: 120px;
  max-width: 100%;
  object-fit: contain;
}

.unit-hint {
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: 10px;
  padding: 8px 10px;
  border-radius: 999px;
  background: var(--hint-pill-bg);
  border: 1px solid var(--hint-pill-border);
  color: var(--text);
  font-size: 12px;
  text-align: center;
  letter-spacing: 0.02em;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 140ms ease, transform 140ms ease;
  backdrop-filter: blur(6px);
}

.unit-hint.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.selected-unit {
  text-align: center;
  margin-bottom: 10px;
}

.selected-unit p {
  margin: 2px 0;
}

#selected-unit-name {
  color: var(--muted);
}

#selected-unit-value {
  font-family: "Space Grotesk", sans-serif;
  font-size: 24px;
}

.unit-list {
  display: grid;
  gap: 8px;
}

.unit-card {
  display: grid;
  grid-template-columns: 58px 1fr auto;
  gap: 10px;
  align-items: center;
  padding: 8px;
  border-radius: 12px;
  background: var(--unit-card-bg);
  border: 1px solid var(--unit-card-border);
}

.unit-card img {
  width: 58px;
  height: 58px;
  object-fit: contain;
}

.unit-title {
  margin: 0;
  font-size: 14px;
}

.unit-size {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 12px;
}

.unit-value {
  font-family: "Space Grotesk", sans-serif;
  font-size: 18px;
  white-space: nowrap;
}

.unit-card button {
  border: 0;
  border-radius: 8px;
  background: color-mix(in srgb, var(--accent) 24%, transparent);
  color: var(--text);
  padding: 6px 10px;
  font-family: "Space Grotesk", sans-serif;
  font-size: 12px;
}

@media (max-width: 360px) {
  .grid-two {
    grid-template-columns: 1fr;
  }

  .view-toggle {
    grid-template-columns: 1fr;
  }

  .unit-card {
    grid-template-columns: 50px 1fr;
  }

  .unit-value {
    grid-column: 2 / 3;
  }
}