/*
Matches the P.A. technology site (static/css/style.css): same tokens, same
light-only commitment. This page is served inside an iframe on /kalkulacka/,
so it paints no outer frame of its own -- the parent draws the border.
*/
:root {
  --bg: #ffffff;
  --ink: #0b0c0e;
  --muted: #6b7076;
  --line: #ececec;
  --line-strong: #dcdcdc;
  --accent: #ff7d37;
  --accent-hover: #f06a1f;
  --accent-text: #b34e10;
  --accent-ink: #1c1006;
  --danger: #c0392b;
  --radius: 10px;
  --radius-sm: 6px;
  --font-display: "Archivo", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-body: "Source Sans 3", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

:focus-visible {
  outline: 2px solid var(--accent-text);
  outline-offset: 2px;
}

.layout {
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 32px 56px;
  display: grid;
  gap: 36px;
}

/* No frame of its own: on /kalkulacka/ the parent .calculator-embed already
   draws one, and nesting a second box inside it reads as a double border. */
.card + .card {
  border-top: 1px solid var(--line);
  padding-top: 36px;
}

.card h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  margin: 28px 0 16px;
}
.card h2:first-child {
  margin-top: 0;
}

.dropzone {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 132px;
  border: 1.5px dashed var(--line-strong);
  border-radius: var(--radius);
  cursor: pointer;
  text-align: center;
  padding: 20px;
  transition: border-color 0.15s, background 0.15s;
}
.dropzone:hover,
.dropzone.dragover {
  border-color: var(--accent);
  background: rgba(255, 125, 55, 0.05);
}
.dropzone small {
  color: var(--muted);
}

/* --- model viewer --- */
.viewer {
  margin: 16px 0 0;
}
.viewer-canvas {
  height: 340px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, #fcfcfc 0%, #f4f4f4 100%);
  overflow: hidden;
  cursor: grab;
  touch-action: none;
}
.viewer-canvas:active {
  cursor: grabbing;
}
.viewer-canvas canvas {
  display: block;
}
.viewer-meta {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 9px;
}
.viewer-dims {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 0.85rem;
  color: var(--ink);
}
#viewerStatus {
  margin: 6px 0 0;
}

@media (max-width: 640px) {
  .viewer-canvas {
    height: 260px;
  }
}

.field {
  margin-bottom: 18px;
}
.field label {
  display: block;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--muted);
  margin-bottom: 7px;
}

.radio-group,
.checkbox-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.radio-group {
  flex-direction: row;
  flex-wrap: wrap;
  gap: 22px;
}
.radio-option,
.checkbox-option {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 0.98rem;
  color: var(--ink);
  cursor: pointer;
}
.radio-option input,
.checkbox-option input {
  width: auto;
  accent-color: var(--accent);
}

select,
input[type="text"],
input[type="email"],
input[type="tel"],
input[type="number"],
textarea {
  width: 100%;
  padding: 11px 12px;
  background: var(--bg);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 0.98rem;
  transition: border-color 0.15s;
}
select:hover,
input:hover,
textarea:hover {
  border-color: #c4c4c4;
}
select:focus,
input:focus,
textarea:focus {
  outline: none;
  border-color: var(--accent);
}
input[type="number"] {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: var(--accent-ink);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 12px 22px;
  font-family: var(--font-body);
  font-size: 0.94rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
}
button:hover:not(:disabled) {
  background: var(--accent-hover);
}
button:active:not(:disabled) {
  transform: scale(0.98);
}
button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.muted {
  color: var(--muted);
}
a {
  color: var(--accent-text);
}
.small {
  font-size: 0.88rem;
}
.error {
  color: var(--danger);
  font-size: 0.88rem;
  min-height: 1.2em;
}

#resultBox {
  background: #fafafa;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 24px;
  margin-bottom: 12px;
}
.result-total {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 2.1rem;
  line-height: 1.15;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--accent-text);
  margin-bottom: 14px;
}
.result-total small {
  font-family: var(--font-body);
  font-weight: 400;
  letter-spacing: 0;
}
.result-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 9px 0;
  font-size: 0.92rem;
  border-bottom: 1px solid var(--line);
}
.result-row:last-child {
  border-bottom: none;
}
.result-row span:last-child {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  text-align: right;
}

@media (max-width: 640px) {
  .layout {
    padding: 24px 18px 40px;
  }
  .card {
    padding: 22px 18px;
  }
}