:root {
  --ink: #181818;
  --muted: #64645f;
  --line: #dedbd2;
  --paper: #fbfaf7;
  --panel: #ffffff;
  --solar: #f0b51b;
  --solar-dark: #c28b00;
  --green: #3d6f4a;
  --green-soft: #e7f0e9;
  --steel: #eef1f2;
  --danger: #a63d2f;
  --shadow: 0 18px 50px rgba(24, 24, 24, 0.1);
  font-family: Arial, Helvetica, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background: linear-gradient(180deg, #ffffff 0%, var(--paper) 42%, #f1f2ee 100%);
  min-height: 100vh;
}

button,
input,
select,
textarea {
  font: inherit;
}

.site-header {
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px clamp(18px, 4vw, 54px);
  border-bottom: 1px solid rgba(24, 24, 24, 0.08);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(14px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  text-decoration: none;
}

.brand-logo {
  width: 48px;
  height: 48px;
  display: block;
  object-fit: contain;
}

.brand strong,
.brand small {
  display: block;
  line-height: 1.1;
}

.brand small,
.header-contact,
.eyebrow,
.progress-meta,
.hint,
.preview-summary,
.field-help,
.choice-text p {
  color: var(--muted);
}

.app-shell {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(520px, 760px);
  gap: clamp(18px, 2.4vw, 30px);
  width: min(1540px, calc(100% - 28px));
  margin: 34px auto;
  align-items: start;
}

.wizard-panel,
.preview-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.wizard-panel {
  padding: clamp(22px, 4vw, 42px);
}

.preview-panel {
  padding: 20px;
  position: sticky;
  top: 110px;
}

.progress-wrap {
  margin-bottom: 34px;
}

.progress-meta,
.preview-header,
.wizard-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.progress-track {
  height: 6px;
  background: var(--steel);
  margin-top: 12px;
  overflow: hidden;
}

#progress-bar {
  display: block;
  width: 12.5%;
  height: 100%;
  background: linear-gradient(90deg, var(--solar), var(--green));
  transition: width 180ms ease;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.76rem;
  font-weight: 700;
  margin: 0 0 8px;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.08;
}

h1 {
  font-size: clamp(2rem, 5vw, 4rem);
  max-width: 860px;
}

h2 {
  font-size: 1.45rem;
}

h3 {
  font-size: 1rem;
}

.lead {
  color: #3f403c;
  font-size: 1.12rem;
  line-height: 1.6;
  max-width: 760px;
  margin: 18px 0 28px;
}

.choice-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 24px;
}

.choice {
  border: 1px solid var(--line);
  background: #fff;
  padding: 16px;
  display: grid;
  grid-template-columns: 94px minmax(0, 1fr);
  gap: 16px;
  text-align: left;
  cursor: pointer;
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.choice:hover,
.choice.selected {
  border-color: var(--solar-dark);
  box-shadow: 0 12px 28px rgba(194, 139, 0, 0.16);
  transform: translateY(-1px);
}

.choice.selected {
  background: #fffaf0;
}

.choice svg {
  width: 94px;
  height: 70px;
  background: var(--paper);
}

.choice-text p,
.field-help,
.hint {
  line-height: 1.45;
}

.choice-text p {
  margin: 6px 0 0;
  font-size: 0.94rem;
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 24px;
}

.field {
  display: grid;
  gap: 8px;
  align-content: start;
}

.field label,
.group-label {
  font-weight: 700;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  padding: 13px 14px;
  min-height: 48px;
  outline: none;
}

.field input,
.field select {
  height: 48px;
}

.field input::placeholder,
.field textarea::placeholder {
  color: #8a8f86;
  opacity: 1;
}

.field textarea {
  min-height: 118px;
  resize: vertical;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(61, 111, 74, 0.16);
}

.field-help {
  font-size: 0.9rem;
  margin: 0;
}

.field-error {
  color: var(--danger);
  margin: 4px 0 0;
  font-weight: 700;
  font-size: 0.92rem;
}

.file-field input[type="file"] {
  display: flex;
  align-items: center;
  padding: 10px 12px;
}

.file-list {
  list-style: none;
  display: grid;
  gap: 6px;
  margin: 0;
  padding: 0;
}

.file-list li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  border: 1px solid var(--line);
  background: #fff;
  padding: 8px 10px;
  font-size: 0.92rem;
}

.file-list small {
  color: var(--muted);
  white-space: nowrap;
}

.toggle-list {
  display: grid;
  gap: 10px;
  margin-top: 22px;
}

.toggle {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 14px;
  border: 1px solid var(--line);
  background: #fff;
}

.toggle input {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  accent-color: var(--green);
}

.wizard-actions {
  border-top: 1px solid var(--line);
  padding-top: 22px;
  margin-top: 32px;
}

.button {
  border: 1px solid transparent;
  min-height: 48px;
  padding: 0 22px;
  cursor: pointer;
  font-weight: 800;
}

.button-primary {
  color: #161616;
  background: var(--solar);
}

.button-primary:hover {
  background: #ffc93a;
}

.button-quiet {
  color: var(--ink);
  background: #fff;
  border-color: var(--line);
}

.button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.sketch {
  margin-top: 18px;
  border: 1px solid var(--line);
  background:
    linear-gradient(#f3f5f4 1px, transparent 1px),
    linear-gradient(90deg, #f3f5f4 1px, transparent 1px),
    #fff;
  background-size: 24px 24px;
  height: clamp(480px, 48vw, 700px);
  display: grid;
  place-items: center;
  overflow: hidden;
}

.sketch svg {
  display: block;
  width: 100%;
  height: 100%;
}

.three-preview-wrap {
  margin-top: 16px;
}

.three-preview-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 8px;
}

.three-preview-title strong {
  color: var(--ink);
}

.three-preview {
  width: 100%;
  height: clamp(260px, 28vw, 390px);
  border: 1px solid var(--line);
  background: #eef1f2;
  overflow: hidden;
  cursor: grab;
}

.three-preview:active {
  cursor: grabbing;
}

.three-preview canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.preview-header h2 {
  margin-top: 0;
}

#preview-status {
  background: var(--green-soft);
  color: var(--green);
  font-weight: 800;
  font-size: 0.78rem;
  padding: 8px 10px;
}

.preview-summary {
  display: grid;
  gap: 9px;
  margin-top: 18px;
  font-size: 0.94rem;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  border-bottom: 1px solid #eee9df;
  padding-bottom: 8px;
}

.notice {
  background: var(--green-soft);
  border-left: 4px solid var(--green);
  padding: 14px 16px;
  margin-top: 20px;
  line-height: 1.5;
}

.privacy {
  grid-column: 1 / -1;
}

.success {
  background: #f6fbf6;
  border: 1px solid #bdd5c2;
  padding: 18px;
  line-height: 1.5;
  margin-top: 22px;
}

@media (max-width: 940px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .wizard-panel {
    order: 1;
  }

  .preview-panel {
    position: static;
    order: 2;
  }
}

@media (max-width: 680px) {
  .site-header {
    position: static;
  }

  .header-contact {
    display: none;
  }

  .app-shell {
    width: min(100% - 24px, 1240px);
    margin: 18px auto;
  }

  .wizard-panel,
  .preview-panel {
    padding: 18px;
  }

  .choice-grid,
  .field-grid {
    grid-template-columns: 1fr;
  }

  .choice {
    grid-template-columns: 78px minmax(0, 1fr);
  }

  .choice svg {
    width: 78px;
    height: 60px;
  }

  .preview-header,
  .wizard-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .button {
    width: 100%;
  }
}