:root {
  --bg: #f3f5f8;
  --bg-accent-1: #e9f0ff;
  --bg-accent-2: #f3f5f8;
  --panel: #ffffff;
  --panel-2: #fafbfc;
  --text: #1a1f27;
  --text-dim: #626c78;
  --border: #e3e6eb;
  --accent: #0f6fff;
  --accent-2: #6a5cff;
  --accent-bg: #eaf2ff;
  --accent-contrast: #ffffff;
  --warn-bg: #fff7e0;
  --warn-border: #f0d98c;
  --warn-text: #7a5b00;
  --shadow: 0 1px 2px rgba(20, 25, 35, 0.04), 0 8px 24px rgba(20, 25, 35, 0.05);
  --shadow-hover: 0 2px 6px rgba(20, 25, 35, 0.06), 0 14px 32px rgba(20, 25, 35, 0.08);
  --radius: 12px;
  --radius-sm: 8px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #10131a;
    --bg-accent-1: #182236;
    --bg-accent-2: #10131a;
    --panel: #1a1f29;
    --panel-2: #1f2530;
    --text: #edeff2;
    --text-dim: #97a1af;
    --border: #2a303c;
    --accent: #5b9bff;
    --accent-2: #9b8bff;
    --accent-bg: #1c2942;
    --accent-contrast: #0b1220;
    --warn-bg: #2b2408;
    --warn-border: #5a4a12;
    --warn-text: #e8c568;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.35);
    --shadow-hover: 0 2px 6px rgba(0, 0, 0, 0.35), 0 14px 32px rgba(0, 0, 0, 0.4);
  }
}

:root[data-theme="dark"] {
  --bg: #10131a;
  --bg-accent-1: #182236;
  --bg-accent-2: #10131a;
  --panel: #1a1f29;
  --panel-2: #1f2530;
  --text: #edeff2;
  --text-dim: #97a1af;
  --border: #2a303c;
  --accent: #5b9bff;
  --accent-2: #9b8bff;
  --accent-bg: #1c2942;
  --accent-contrast: #0b1220;
  --warn-bg: #2b2408;
  --warn-border: #5a4a12;
  --warn-text: #e8c568;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 2px 6px rgba(0, 0, 0, 0.35), 0 14px 32px rgba(0, 0, 0, 0.4);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(1100px 500px at 15% -10%, var(--bg-accent-1), transparent 60%),
    var(--bg-accent-2);
  color: var(--text);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.55;
  transition: background-color .25s ease, color .25s ease;
}

.wrap {
  max-width: 1000px;
  margin: 0 auto;
  padding: 40px 20px 64px;
}

header { margin-bottom: 8px; }

.title-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

header h1 {
  font-size: 1.7rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin: 0 0 8px;
  background: linear-gradient(100deg, var(--text) 40%, var(--accent) 120%);
  -webkit-background-clip: text;
  background-clip: text;
}

.sub {
  color: var(--text-dim);
  margin: 0 0 20px;
  max-width: 62ch;
  font-size: 0.96rem;
}

.toolbar {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.lang-select {
  position: relative;
}

.theme-toggle,
.lang-toggle {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text-dim);
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: color .15s ease, border-color .15s ease, transform .15s ease, box-shadow .15s ease;
}

.lang-toggle { font-size: 1.15rem; line-height: 1; }

.theme-toggle:hover,
.lang-toggle:hover {
  color: var(--accent);
  border-color: var(--accent);
  box-shadow: var(--shadow-hover);
}

.theme-toggle:active,
.lang-toggle:active { transform: scale(0.92); }

.lang-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  z-index: 20;
  min-width: 150px;
  margin: 0;
  padding: 6px;
  list-style: none;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-hover);
}

.lang-option {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 8px 10px;
  border: none;
  border-radius: 6px;
  background: none;
  color: var(--text);
  font-family: inherit;
  font-size: 0.86rem;
  text-align: left;
  cursor: pointer;
  transition: background .12s ease;
}

.lang-option .flag { font-size: 1.1rem; line-height: 1; }

.lang-option:hover { background: var(--panel-2); }

.lang-option.active { font-weight: 700; color: var(--accent); }

.theme-toggle .icon-moon { display: none; }

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .icon-sun { display: none; }
  :root:not([data-theme="light"]) .theme-toggle .icon-moon { display: block; }
}

:root[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: block; }

.disclaimer {
  background: var(--warn-bg);
  border: 1px solid var(--warn-border);
  color: var(--warn-text);
  border-radius: var(--radius);
  padding: 13px 16px;
  font-size: 0.88rem;
  margin-bottom: 28px;
}

.disclaimer strong { color: inherit; }
.disclaimer a { color: var(--accent); font-weight: 600; text-decoration: none; }
.disclaimer a:hover { text-decoration: underline; }

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 20px;
  align-items: start;
}

@media (max-width: 860px) {
  .grid { grid-template-columns: 1fr; }
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  transition: background-color .25s ease, border-color .25s ease, box-shadow .2s ease;
}

.panel.result {
  position: sticky;
  top: 20px;
  border-top: 3px solid var(--accent);
}

@media (max-width: 860px) {
  .panel.result { position: static; }
}

.panel h2 {
  font-size: 1.02rem;
  font-weight: 700;
  margin: 0 0 16px;
}

.panel h2:not(:first-child) {
  margin-top: 26px;
  padding-top: 22px;
  border-top: 1px solid var(--border);
}

.field { margin-bottom: 18px; }

.field label {
  display: block;
  font-size: 0.88rem;
  margin-bottom: 8px;
  color: var(--text-dim);
}

.field label span {
  color: var(--accent);
  font-weight: 700;
}

input[type="number"] {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--panel-2);
  color: var(--text);
  font-size: 0.9rem;
  font-family: inherit;
}

input[type="number"]:focus {
  outline: none;
  border-color: var(--accent);
}

input[type="range"] {
  width: 100%;
  height: 20px;
  margin: 4px 0;
  background: transparent;
  -webkit-appearance: none;
  appearance: none;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-runnable-track {
  height: 6px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent) 0%, var(--accent-2) var(--fill, 50%), var(--border) var(--fill, 50%), var(--border) 100%);
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  margin-top: -6px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--accent-contrast);
  box-shadow: 0 0 0 1px var(--accent);
  transition: transform .12s ease;
}

input[type="range"]::-webkit-slider-thumb:hover { transform: scale(1.15); }

input[type="range"]::-moz-range-track {
  height: 6px;
  border-radius: 999px;
  background: var(--border);
}

input[type="range"]::-moz-range-progress {
  height: 6px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}

input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--accent-contrast);
  box-shadow: 0 0 0 1px var(--accent);
}

.range-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.74rem;
  color: var(--text-dim);
}

.features {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 4px;
  border-radius: 6px;
  cursor: pointer;
  transition: background .15s ease;
}

.feature-item:hover { background: var(--panel-2); }

.feature-item input {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  accent-color: var(--accent);
}

.feature-item .icon {
  flex-shrink: 0;
  font-size: 0.95rem;
  line-height: 1;
  width: 1.2em;
  text-align: center;
}

.feature-item .name { font-size: 0.9rem; }

.feature-item:has(input:checked) .name { font-weight: 600; color: var(--accent); }


.tier-badge {
  display: inline-block;
  background: linear-gradient(100deg, var(--accent-bg), var(--accent-bg));
  color: var(--accent);
  font-weight: 700;
  padding: 7px 16px;
  border-radius: 999px;
  margin-bottom: 18px;
  font-size: 0.95rem;
  border: 1px solid var(--accent);
}

.variant {
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}

.variant:last-of-type { border-bottom: none; padding-bottom: 8px; }

.variant-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
}

.variant-title { font-weight: 700; font-size: 0.9rem; }

.variant-badge {
  font-size: 0.66rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .02em;
  padding: 3px 8px;
  border-radius: 999px;
  white-space: nowrap;
}

.variant-badge.ok { background: var(--accent-bg); color: var(--accent); }
.variant-badge.neutral { background: var(--panel-2); color: var(--text-dim); border: 1px solid var(--border); }
.variant-badge.warn { background: var(--warn-bg); color: var(--warn-text); border: 1px solid var(--warn-border); }

.stat-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 3px 0;
  font-size: 0.86rem;
}

.stat-row .stat-label { color: var(--text-dim); }
.stat-row .stat-value { font-weight: 700; color: var(--text); font-variant-numeric: tabular-nums; }

.stat-note {
  margin-top: 8px;
  font-size: 0.74rem;
  color: var(--text-dim);
}

.result h3 { font-size: 0.86rem; color: var(--text-dim); margin: 0 0 10px; text-transform: uppercase; letter-spacing: .03em; }

.breakdown {
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.breakdown li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 7px 0;
  border-bottom: 1px dashed var(--border);
}

.breakdown li .label { color: var(--text-dim); }
.breakdown li span:last-child { font-variant-numeric: tabular-nums; text-align: right; }

footer {
  margin-top: 34px;
  color: var(--text-dim);
  font-size: 0.8rem;
  text-align: center;
}

footer code {
  background: var(--accent-bg);
  color: var(--accent);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.85em;
}