/* Palette taken from the reference render: page gradient, card black, tilt grey. */
:root {
  --bg-top: #191a1e;
  --bg-bottom: #313339;
  --field: #18191d;
  --line: #3a3c42;
  --line-strong: #5a5c63;
  --ink: #ffffff;
  --ink-soft: #d9dade;
  --muted: #a3a5ad;
  --error: #ff8a7a;
  --radius: 10px;
  --column: 937px;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg-top);
}

body {
  margin: 0;
  min-height: 100vh;
  background: linear-gradient(180deg, var(--bg-top), var(--bg-bottom)) fixed;
  color: var(--ink);
  font: 400 16px/1.5 "Builder Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}

.page {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  max-width: calc(var(--column) + 32px);
  margin-inline: auto;
  padding: clamp(40px, 9vh, 104px) 16px 40px;
}

.intro h1 {
  margin: 0;
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.intro p {
  max-width: 46ch;
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 17px;
}

.preview {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 937 / 591;
  filter: drop-shadow(0 4px 12px rgb(0 0 0 / 0.35));
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.preview.is-ready {
  opacity: 1;
  transform: none;
}

.controls {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.field {
  display: grid;
  gap: 8px;
}

.field-label {
  color: var(--ink-soft);
  font-size: 14px;
  font-weight: 600;
}

.input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.prefix {
  position: absolute;
  left: 14px;
  color: var(--muted);
  font-size: 17px;
  pointer-events: none;
}

.field input {
  width: 100%;
  height: 48px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--field);
  color: var(--ink);
  font: inherit;
  font-size: 17px;
}

.input-wrap input {
  padding-left: 28px;
}

.field input:hover {
  border-color: var(--line-strong);
}

.field input:focus-visible,
.button:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 2px;
}

.actions {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  min-width: 150px;
  height: 48px;
  padding: 0 22px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

.button:hover:not(:disabled) {
  background: #26272c;
}

.button.primary {
  border-color: var(--ink);
  background: var(--ink);
  color: #000000;
}

.button.primary:hover:not(:disabled) {
  background: #e4e5e8;
}

.button:disabled {
  opacity: 0.45;
  cursor: default;
}

.status {
  margin: 0;
  color: var(--error);
}

.footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px 24px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.footer p {
  margin: 0;
}

.made-by {
  color: var(--ink-soft);
  font-size: 15px;
  font-weight: 600;
}

.made-by a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--line-strong);
  text-underline-offset: 3px;
}

.made-by a:hover {
  text-decoration-color: var(--ink);
}

.made-by a:focus-visible {
  border-radius: 2px;
  outline: 2px solid var(--ink);
  outline-offset: 2px;
}

.footnote {
  margin-top: 2px;
  color: var(--muted);
  font-size: 13px;
}

.button.kofi {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  text-decoration: none;
}

.kofi-cup {
  width: 22px;
  height: 22px;
  flex: none;
}

@media (max-width: 640px) {
  .controls {
    grid-template-columns: minmax(0, 1fr);
  }

  .button {
    flex: 1 1 auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .preview {
    transition: none;
  }
}