@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

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

html, body {
  font-family: 'Inter', system-ui, sans-serif;
  background: #0b0d12;
  color: #e5e7eb;
  min-height: 100vh;
}

.customizer {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px;
}

.header {
  margin-bottom: 24px;
}
.header h1 {
  font-size: 1.5em;
  font-weight: 800;
  margin-bottom: 4px;
}
.header p {
  color: #9ca3af;
  font-size: 0.9em;
}

.layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 20px;
  align-items: start;
}

.panel {
  background: linear-gradient(160deg, rgba(17,20,26,0.92), rgba(11,13,17,0.92));
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 16px;
  padding: 18px;
}

.panel-title {
  font-size: 1.05em;
  font-weight: 700;
  margin-bottom: 14px;
}

.field {
  margin-bottom: 14px;
}
.field-label {
  display: block;
  font-size: 0.8em;
  color: #9ca3af;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}

.input {
  width: 100%;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 10px;
  padding: 10px 12px;
  color: #fff;
  font-size: 0.95em;
  font-family: inherit;
  outline: none;
}
.input:focus {
  border-color: rgba(255,255,255,0.25);
}

select.input {
  appearance: none;
}

.range-input {
  padding: 10px 0;
}

.color-input {
  height: 44px;
  padding: 4px;
  cursor: pointer;
}

.btn {
  width: 100%;
  padding: 12px;
  border-radius: 10px;
  border: none;
  font-weight: 700;
  font-size: 0.95em;
  cursor: pointer;
  font-family: inherit;
}
.btn-primary {
  background: linear-gradient(135deg, #ff4655, #ff7b85);
  color: #fff;
}
.btn-secondary {
  background: rgba(255,255,255,0.08);
  color: #e5e7eb;
  border: 1px solid rgba(255,255,255,0.12);
  margin-top: 8px;
}

.preview-area {
  min-height: 200px;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 24px;
}

.url-box {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}
.url-input {
  flex: 1;
  background: rgba(0,0,0,0.3);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 10px;
  padding: 10px 12px;
  color: #9ca3af;
  font-size: 0.85em;
  font-family: monospace;
}

@media (max-width: 800px) {
  .layout { grid-template-columns: 1fr; }
}