:root {
  --ink: #10131a;
  --navy: #121b2c;
  --navy-2: #1d2a40;
  --paper: #fffaf2;
  --paper-2: #f8f1e6;
  --gold: #c69b5d;
  --gold-2: #e8c894;
  --muted: #6a7080;
  --line: rgba(16, 19, 26, 0.13);
  --shadow: 0 18px 45px rgba(16, 19, 26, 0.13);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  background: radial-gradient(circle at 90% 0%, rgba(198,155,93,.28), transparent 34%), linear-gradient(180deg, #fffaf2 0%, #f1e6d6 100%);
  color: var(--ink);
  padding: 16px;
}

.top-nav {
  max-width: 1320px;
  margin: 0 auto 12px;
  background: linear-gradient(145deg, var(--navy), #0d1422);
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.08);
  box-shadow: var(--shadow);
}

.top-nav a {
  display: inline-block;
  color: #f6e9d2;
  text-decoration: none;
  font-weight: 800;
  letter-spacing: .04em;
  text-transform: uppercase;
  font-size: 12px;
  padding: 11px 14px;
}

.container {
  max-width: 1320px;
  margin: 0 auto;
  background: rgba(255,255,255,.58);
  border: 1px solid rgba(16, 19, 26, 0.08);
  border-radius: 26px;
  padding: 20px;
  box-shadow: 0 28px 80px rgba(16, 19, 26, 0.12);
  backdrop-filter: blur(10px);
}

.hero-block {
  text-align: left;
  background: linear-gradient(145deg, #192436, #111a2a);
  color: #fff;
  border-radius: 22px;
  padding: 18px 20px;
  margin-bottom: 16px;
}

h1 {
  font-size: clamp(1.45rem, 2.1vw, 2.05rem);
  letter-spacing: -.02em;
}

.hero-block p {
  margin-top: 6px;
  color: #e3dece;
  max-width: 780px;
}

.designer-shell {
  display: grid;
  grid-template-columns: minmax(330px, 0.95fr) minmax(0, 1.45fr);
  gap: 14px;
}

.controls {
  background: rgba(255,255,255,.85);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 16px;
}

.preview-panel {
  background: linear-gradient(180deg, #fdf7ec, #f6ecdc);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 14px;
}

.preview-panel h2 {
  font-size: 1.08rem;
  margin-bottom: 3px;
}

.preview-panel > p {
  color: var(--muted);
  margin-bottom: 10px;
  font-size: .94rem;
}

.control-group { margin-bottom: 14px; }

label {
  display: block;
  margin-bottom: 6px;
  font-weight: 800;
  color: #273045;
}

.label-spaced { margin-top: 8px; }

select,
input[type="text"],
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: #fff;
  padding: 10px 11px;
  font: inherit;
}

textarea { min-height: 70px; resize: vertical; }

.inline-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  margin-top: 7px;
}

input[type="range"] { accent-color: #9a6a33; }

.font-select { min-width: 140px; }

.size-label {
  width: 46px;
  text-align: right;
  font-weight: 700;
  color: #4d5971;
}

.size-label-auto { width: auto; }

.toggle-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 34px;
  border: 1px solid var(--line);
  border-radius: 9px;
  font-weight: 900;
  background: #fff;
  cursor: pointer;
}

.toggle-label input[type="checkbox"] { display: none; }

.company-row {
  display: grid;
  grid-template-columns: 130px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
}

.upload-container {
  width: 130px;
  height: 130px;
  border: 2px dashed #a4723a;
  border-radius: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.upload-content { text-align: center; }
.upload-icon { font-size: 1.8rem; color: #9a6a33; margin-bottom: 7px; }
.upload-text {
  background: linear-gradient(135deg, #9a6a33, #c48d4f);
  color: #fff;
  border-radius: 8px;
  padding: 5px 6px;
  line-height: 1.2;
  font-size: .72rem;
}

#logoPreview { max-width: 104px; max-height: 104px; object-fit: contain; display: none; }
.preview-active #logoPreview { display: block; }
.preview-active .upload-content { display: none; }

.preview-overlay {
  position: absolute;
  inset: 0;
  background: rgba(16,19,26,.58);
  color: #fff;
  display: none;
  align-items: center;
  justify-content: center;
  font-size: .8rem;
  text-align: center;
  padding: 8px;
}

.preview-active:hover .preview-overlay { display: flex; }

.logo-size-row {
  margin-top: 8px;
  display: flex;
  gap: 6px;
  align-items: center;
}

.logo-size-row label { margin: 0; min-width: 74px; }
.logo-size-row input[type="range"] { flex: 1; }

.color-select-container {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 7px;
  border: 1px solid var(--line);
  border-radius: 11px;
  padding: 7px;
  background: #fff;
}

.radio-label {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px;
  border-radius: 9px;
  border: 1px solid transparent;
  cursor: pointer;
}

.radio-label:hover { border-color: var(--line); background: var(--paper-2); }
.radio-label input[type="radio"] { display: none; }
.color-swatch { width: 18px; height: 18px; border-radius: 5px; border: 1px solid rgba(16,19,26,.2); }

.preview-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.preview-item {
  background: #fff;
  border: 1px solid rgba(16, 19, 26, 0.14);
  border-radius: 14px;
  padding: 10px;
  min-height: 220px;
  transition: transform .2s ease, box-shadow .2s ease;
}

.preview-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 32px rgba(16, 19, 26, 0.12);
}

.preview-item p {
  text-align: center;
  font-size: .82rem;
  font-weight: 800;
  margin-bottom: 4px;
  color: #5f6880;
}

.stamp-preview {
  width: 80%;
  height: auto;
  display: block;
  margin: 0 auto;
}

@media (max-width: 1180px) {
  .designer-shell { grid-template-columns: 1fr; }
  .preview-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 760px) {
  body { padding: 10px; }
  .container { padding: 12px; border-radius: 18px; }
  .hero-block { border-radius: 14px; padding: 14px; }
  .controls, .preview-panel { border-radius: 14px; padding: 11px; }

  .company-row { grid-template-columns: 1fr; }
  .upload-container { width: 100%; height: 122px; }

  .logo-size-row { flex-wrap: wrap; }
  .logo-size-row label { min-width: auto; }

  .color-select-container,
  .preview-grid { grid-template-columns: 1fr; }
}