:root {
  --bg-0: #f7f2e7;
  --bg-1: #ffe4b9;
  --ink-0: #17212f;
  --ink-1: #2f3c4d;
  --accent-a: #007f7c;
  --accent-b: #e95f2b;
  --ok: #0e8f5e;
  --warn: #b73a2f;
  --card: #fffdf8;
  --line: #d8d2c7;
  --shadow: 0 14px 40px rgba(20, 27, 40, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Space Grotesk", sans-serif;
  color: var(--ink-0);
  background:
    radial-gradient(circle at 10% 15%, rgba(0, 127, 124, 0.18), transparent 28%),
    radial-gradient(circle at 85% 5%, rgba(233, 95, 43, 0.2), transparent 30%),
    linear-gradient(160deg, var(--bg-0), var(--bg-1));
}

.page {
  width: min(1200px, 94vw);
  margin: 2rem auto 3rem;
}

.hero {
  animation: fadeUp 420ms ease-out;
}

.eyebrow {
  font-size: 0.84rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-a);
  margin: 0;
}

h1 {
  margin: 0.4rem 0 0.5rem;
  font-size: clamp(1.8rem, 3.8vw, 3rem);
  line-height: 1.05;
}

.subtitle {
  margin: 0;
  color: var(--ink-1);
  max-width: 70ch;
}

.live-link {
  color: var(--accent-a);
  font-weight: 600;
}

.live-link:hover {
  color: var(--accent-b);
}

.grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 1rem;
  margin-top: 1.2rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.controls,
.output {
  padding: 1rem;
}

h2 {
  margin-top: 0;
  margin-bottom: 0.8rem;
  font-size: 1.1rem;
}

.field-row {
  display: grid;
  gap: 0.4rem;
  margin-bottom: 0.8rem;
}

.split-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.7rem;
}

.split-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.7rem;
}

.split-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.7rem;
}

label {
  font-size: 0.83rem;
  color: var(--ink-1);
}

input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  color: var(--ink-0);
  padding: 0.62rem 0.7rem;
  font: inherit;
}

input:focus {
  outline: 2px solid color-mix(in oklab, var(--accent-a), white 65%);
  border-color: var(--accent-a);
}

.actions {
  display: flex;
  gap: 0.6rem;
  margin-top: 0.8rem;
}

button {
  border: 0;
  border-radius: 10px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  padding: 0.66rem 0.95rem;
  transition: transform 120ms ease, opacity 120ms ease;
}

button:hover {
  transform: translateY(-1px);
}

#generateBtn {
  background: var(--accent-a);
  color: #fff;
}

#downloadBtn {
  background: var(--accent-b);
  color: #fff;
}

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

.errors {
  margin: 0.8rem 0 0;
  padding-left: 1.1rem;
  color: var(--warn);
  min-height: 1.2rem;
}

.summary {
  border: 1px dashed var(--line);
  border-radius: 12px;
  padding: 0.8rem;
  margin-bottom: 0.8rem;
  background: #fff;
}

.summary.ok {
  border-color: color-mix(in oklab, var(--ok), white 50%);
}

.summary.empty {
  color: var(--ink-1);
}

.xml-preview {
  margin: 0;
  background: #11161f;
  color: #dfebff;
  border-radius: 12px;
  min-height: 300px;
  max-height: 520px;
  overflow: auto;
  padding: 0.8rem;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.8rem;
  line-height: 1.45;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 950px) {
  .grid {
    grid-template-columns: 1fr;
  }

  .split-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .page {
    width: 95vw;
  }

  .split-2,
  .split-3,
  .split-4 {
    grid-template-columns: 1fr;
  }

  .actions {
    flex-direction: column;
  }
}