@import url("https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;700&display=swap");
@import url("https://fonts.googleapis.com/css2?family=Material+Icons+Outlined");

:root {
  --spacer: 1rem;
  --app-bg: #ffffff;
  --app-surface: #ffffff;
  --app-surface-muted: #f6f6f6;
  --app-border: rgba(0, 0, 0, 0.22);
  --app-border-strong: rgba(0, 0, 0, 0.5);
  --app-shadow-soft: 0 8px 22px rgba(0, 0, 0, 0.08);
  --app-shadow-focus: 0 0 0 3px rgba(48, 197, 240, 0.35);
  --app-radius-sm: 8px;
  --app-radius-md: 10px;
  --app-radius-lg: 12px;
  --app-primary: #000000;
  --app-text: #101010;
  --app-text-soft: #555555;
  --app-secondary: #30c5f0;
  --app-danger: #eb4a4a;
  --app-warning: #f6a600;
  --app-gradient: linear-gradient(135deg, #30c5f0, #ff66b2, #ffd873);
  --dim-blue: #2b63ca;
  --dim-red: #d33d3d;
  --dim-orange: #e38b1f;
  --dim-purple: #8f64d8;
  --dim-green: #3a8d3d;
  --dim-slate: #6f7f95;
  --dim-neutral: #2b2f39;
}

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

html,
body {
  margin: 0;
  padding: 0;
  min-width: 320px;
}

body {
  font-family: "DM Sans", "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.2;
  color: var(--app-text);
  background:
    radial-gradient(circle at 8% 10%, rgba(48, 197, 240, 0.18), transparent 36%),
    radial-gradient(circle at 92% 4%, rgba(255, 102, 178, 0.16), transparent 34%),
    linear-gradient(180deg, #fafcff 0%, #f5f7fb 55%, #f2f4f8 100%);
  padding: calc(var(--spacer) * 1.2);
}

.app {
  max-width: 1140px;
  margin: 0 auto;
  display: grid;
  gap: calc(var(--spacer) * 1.1);
}

.app-header {
  display: flex;
  align-items: center;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: calc(var(--spacer) * 0.65);
}

.brand-mark {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: var(--app-gradient);
  display: grid;
  place-items: center;
  box-shadow: var(--app-shadow-soft);
}

.brand-logo {
  width: 24px;
  height: 24px;
  display: block;
  filter: brightness(0) invert(1);
}

.brand-text {
  display: grid;
  gap: 2px;
}

.brand-text strong {
  font-size: 1.2rem;
  line-height: 1;
}

.brand-text span {
  font-size: 0.92rem;
  color: var(--app-text-soft);
}

h1,
h2 {
  margin: 0;
  color: var(--app-text);
  line-height: 1.25;
}

h1 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

h2 {
  font-size: 1.18rem;
  font-weight: 700;
  margin-bottom: calc(var(--spacer) * 0.75);
}

.section-title {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.section-icon {
  font-size: 1.1rem;
  line-height: 1;
  color: #0f92b8;
}

.panel {
  background: var(--app-surface);
  border: 1px solid var(--app-border);
  border-radius: var(--app-radius-lg);
  box-shadow: var(--app-shadow-soft);
  padding: calc(var(--spacer) * 1);
}

.params-grid,
.result-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: calc(var(--spacer) * 0.7) calc(var(--spacer) * 0.85);
}

.param-item {
  border: 1px solid var(--app-border);
  border-radius: var(--app-radius-md);
  background: var(--app-surface-muted);
  padding: calc(var(--spacer) * 0.55) calc(var(--spacer) * 0.6);
  display: grid;
  gap: calc(var(--spacer) * 0.35);
}

.param-item label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.param-icon {
  font-size: 1.05rem;
  line-height: 1;
  color: #0f92b8;
}

.param-icon-vertical {
  transform: rotate(90deg);
  transform-origin: center;
}

.result-grid {
  grid-template-columns: 270px minmax(220px, 1fr);
  gap: calc(var(--spacer) * 0.5) calc(var(--spacer) * 0.75);
  align-items: center;
}

label {
  color: var(--app-text);
  font-weight: 500;
}

input,
select,
button {
  font: inherit;
}

input,
select {
  width: 100%;
  max-width: 100%;
  height: calc(var(--spacer) * 2.25);
  color: var(--app-text);
  background: #fff;
  border: 1px solid var(--app-border-strong);
  border-radius: calc(var(--spacer) * 0.25);
  padding: calc(var(--spacer) * 0.45) calc(var(--spacer) * 0.55);
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

select {
  appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg fill='%23000000' height='24' viewBox='0 0 24 24' width='24' xmlns='http://www.w3.org/2000/svg'><path d='M7 10l5 5 5-5z'/><path d='M0 0h24v24H0z' fill='none'/></svg>");
  background-repeat: no-repeat;
  background-position: calc(100% - 12px) center;
  padding-right: 34px;
  cursor: pointer;
}

input:focus,
select:focus {
  border-color: var(--app-secondary);
  box-shadow: var(--app-shadow-focus);
}

.actions {
  margin-top: calc(var(--spacer) * 0.75);
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--spacer) * 0.55);
}

.btn,
button {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.38rem;
  min-height: calc(var(--spacer) * 2.25);
  padding: calc(var(--spacer) * 0.38) calc(var(--spacer) * 0.9);
  border: 2px solid var(--app-primary);
  border-radius: calc(var(--spacer) * 0.25);
  font-size: 0.98rem;
  font-weight: 600;
  line-height: 1.3;
  cursor: pointer;
  transition: background-color 0.25s ease, color 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.88rem;
  line-height: 1;
  color: currentColor;
}

.btn-primary {
  background: var(--app-primary);
  color: #fff;
  border-color: var(--app-primary);
}

.btn-outline {
  background: #fff;
  color: var(--app-primary);
  border-color: var(--app-primary);
}

.btn:hover,
button:hover {
  background: var(--app-gradient);
  border-color: var(--app-primary);
  color: #fff;
  box-shadow: 0 0 8px rgba(0, 0, 0, 0.2);
}

.btn:disabled,
button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
  box-shadow: none;
  background: #d2d7e0;
  border-color: #b9bfcb;
  color: #4f5867;
}

.print-help {
  margin: calc(var(--spacer) * 0.45) 0 0;
  font-size: 0.94rem;
  color: var(--app-text-soft);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.print-help .material-icons-outlined {
  font-size: 1rem;
  line-height: 1;
  color: #0f92b8;
}

.result-grid {
  margin: 0;
}

.result-grid dt,
.result-grid dd {
  margin: 0;
}

.result-grid dt {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
  color: var(--app-text);
}

.result-grid dd {
  color: var(--app-text-soft);
  font-weight: 600;
}

.result-grid dt::before {
  content: "";
  width: 9px;
  height: 9px;
  border-radius: 99px;
  background: currentColor;
  flex: 0 0 auto;
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.95), 0 0 0 3px rgba(0, 0, 0, 0.08);
}

.result-grid dt[data-dim-color="blue"]::before,
.result-grid dd[data-dim-color="blue"] {
  color: var(--dim-blue);
}
.result-grid dt[data-dim-color="blue"]::before { background: var(--dim-blue); }

.result-grid dt[data-dim-color="red"]::before,
.result-grid dd[data-dim-color="red"] {
  color: var(--dim-red);
}
.result-grid dt[data-dim-color="red"]::before { background: var(--dim-red); }

.result-grid dt[data-dim-color="orange"]::before,
.result-grid dd[data-dim-color="orange"] {
  color: var(--dim-orange);
}
.result-grid dt[data-dim-color="orange"]::before { background: var(--dim-orange); }

.result-grid dt[data-dim-color="purple"]::before,
.result-grid dd[data-dim-color="purple"] {
  color: var(--dim-purple);
}
.result-grid dt[data-dim-color="purple"]::before { background: var(--dim-purple); }

.result-grid dt[data-dim-color="green"]::before,
.result-grid dd[data-dim-color="green"] {
  color: var(--dim-green);
}
.result-grid dt[data-dim-color="green"]::before { background: var(--dim-green); }

.result-grid dt[data-dim-color="slate"]::before,
.result-grid dd[data-dim-color="slate"] {
  color: var(--dim-slate);
}
.result-grid dt[data-dim-color="slate"]::before { background: var(--dim-slate); }

.result-grid dt[data-dim-color="neutral"]::before,
.result-grid dd[data-dim-color="neutral"] {
  color: var(--dim-neutral);
}
.result-grid dt[data-dim-color="neutral"]::before { background: var(--dim-neutral); }

.errors {
  margin-top: calc(var(--spacer) * 0.6);
  color: var(--app-danger);
  min-height: 22px;
  font-weight: 500;
}

.errors:empty {
  display: none;
}

.errors p {
  margin: 4px 0 0;
  display: inline-flex;
  align-items: flex-start;
  gap: 6px;
}

.errors p::before {
  content: "error";
  font-family: "Material Icons Outlined";
  font-size: 1rem;
  line-height: 1;
  font-weight: 400;
  margin-top: 1px;
  color: var(--app-danger);
}

.warn {
  margin-top: calc(var(--spacer) * 0.45);
  color: #946300;
  background: rgba(246, 166, 0, 0.12);
  border: 1px solid rgba(246, 166, 0, 0.35);
  border-radius: var(--app-radius-sm);
  padding: calc(var(--spacer) * 0.45) calc(var(--spacer) * 0.55);
}

.is-hidden {
  display: none !important;
}

.gabarits-structure {
  position: relative;
  min-height: 440px;
  border: 1px solid var(--app-border);
  border-radius: var(--app-radius-md);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.95) 0%, rgba(245, 247, 251, 0.95) 100%),
    repeating-linear-gradient(0deg, rgba(0, 0, 0, 0.03) 0, rgba(0, 0, 0, 0.03) 1px, transparent 1px, transparent 22px),
    repeating-linear-gradient(90deg, rgba(0, 0, 0, 0.03) 0, rgba(0, 0, 0, 0.03) 1px, transparent 1px, transparent 22px);
  overflow: hidden;
}

#diagramSvg {
  width: 100%;
  height: 100%;
  min-height: 440px;
  display: block;
}

.diagram-empty {
  position: absolute;
  inset: 0;
  margin: 0;
  display: grid;
  place-items: center;
  color: var(--app-text-soft);
  font-size: 0.95rem;
}

@media (max-width: 1024px) {
  body {
    padding: calc(var(--spacer) * 0.9);
  }

  .panel {
    padding: calc(var(--spacer) * 0.9);
  }

  .params-grid,
  .result-grid {
    grid-template-columns: 1fr;
    gap: calc(var(--spacer) * 0.55);
  }

  .param-item {
    padding: calc(var(--spacer) * 0.5) calc(var(--spacer) * 0.55);
  }

  .gabarits-structure,
  #diagramSvg {
    min-height: 340px;
  }
}

@media (max-width: 768px) {
  body {
    padding: calc(var(--spacer) * 0.75);
  }

  .brand-mark {
    width: 42px;
    height: 42px;
    border-radius: 11px;
  }

  .brand-logo {
    width: 22px;
    height: 22px;
  }

  .brand-text strong {
    font-size: 1.08rem;
  }

  .brand-text span {
    font-size: 0.85rem;
  }

  .section-title {
    font-size: 1.08rem;
  }

  .section-icon,
  .param-icon {
    font-size: 1rem;
  }

  .params-grid,
  .result-grid {
    grid-template-columns: 1fr;
    gap: calc(var(--spacer) * 0.45);
  }

  .param-item {
    padding: calc(var(--spacer) * 0.5);
  }

  input,
  select {
    height: calc(var(--spacer) * 2.15);
  }

  .actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn,
  button {
    width: 100%;
  }

  .gabarits-structure,
  #diagramSvg {
    min-height: 300px;
  }
}

@media (max-width: 480px) {
  body {
    padding: calc(var(--spacer) * 0.55);
  }

  .app {
    gap: calc(var(--spacer) * 0.8);
  }

  .panel {
    padding: calc(var(--spacer) * 0.72);
  }

  .section-title {
    gap: 6px;
    font-size: 1rem;
  }

  .section-icon,
  .param-icon {
    font-size: 0.92rem;
  }

  .param-item {
    gap: calc(var(--spacer) * 0.28);
    padding: calc(var(--spacer) * 0.42) calc(var(--spacer) * 0.45);
  }

  .param-item label {
    gap: 6px;
    font-size: 0.92rem;
  }

  input,
  select {
    height: calc(var(--spacer) * 2.02);
    padding: calc(var(--spacer) * 0.35) calc(var(--spacer) * 0.45);
    font-size: 0.95rem;
  }

  .btn,
  button {
    min-height: calc(var(--spacer) * 2.05);
    font-size: 0.93rem;
  }

  .print-help {
    font-size: 0.88rem;
  }

  .result-grid dt,
  .result-grid dd {
    font-size: 0.95rem;
  }

  .result-grid dt::before {
    width: 8px;
    height: 8px;
  }

  .gabarits-structure,
  #diagramSvg {
    min-height: 270px;
  }
}