:root {
  --bg-top: #f4f8fb;
  --bg-bottom: #edf2f6;
  --ink: #0f172a;
  --ink-soft: #51607a;
  --panel: #ffffffe8;
  --line: #d5deea;
  --line-strong: #a9b7cb;
  --accent: #0875e1;
  --accent-strong: #005ec1;
  --success: #1d9d56;
  --shadow: 0 18px 40px -24px #152b5138;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Manrope", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 14% 12%, #cfe7ff 0%, transparent 32%),
    radial-gradient(circle at 86% 6%, #d9f3e8 0%, transparent 24%),
    linear-gradient(165deg, var(--bg-top), var(--bg-bottom));
  padding: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  width: 100%;
  background: #fffffff2;
  border-bottom: 1px solid #d8e1ed;
  backdrop-filter: blur(8px);
}

.site-header-inner {
  width: min(1080px, 100%);
  margin: 0 auto;
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 0 24px;
}

.brand {
  text-decoration: none;
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.brand-primary {
  color: #1497a0;
  font-size: clamp(1.55rem, 4.2vw, 2.3rem);
}

.brand-mid {
  color: #5f6f86;
  font-size: clamp(1.35rem, 3.8vw, 2rem);
}

.brand-secondary {
  color: #e66752;
  font-size: clamp(1.5rem, 4.1vw, 2.25rem);
}

.app-shell {
  width: min(1080px, 100%);
  margin: 14px auto 0;
  padding: 0 24px 24px;
  display: grid;
  gap: 16px;
}

.site-footer {
  border-top: 1px solid #d8e1ed;
  background: #ffffffd8;
}

.site-footer-inner {
  width: min(1080px, 100%);
  margin: 0 auto;
  padding: 16px 24px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.site-footer-inner p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.footer-links a {
  text-decoration: none;
  color: #0c63c3;
  font-weight: 700;
}

.footer-links a:hover {
  text-decoration: underline;
}

.hero {
  background: #ffffffd9;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: clamp(18px, 4vw, 28px);
  box-shadow: var(--shadow);
}

.eyebrow {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #1666b8;
}

.hero h1 {
  margin: 8px 0;
  font-size: clamp(1.55rem, 3.6vw, 2.55rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.hero-copy {
  margin: 0;
  color: var(--ink-soft);
  max-width: 70ch;
}

.panel {
  border-radius: 18px;
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
  padding: 16px;
}

.upload-panel {
  display: grid;
  gap: 14px;
}

.dropzone {
  border: 1.5px dashed var(--line-strong);
  border-radius: 14px;
  background: linear-gradient(180deg, #f9fcff, #f4f8fd);
  min-height: 190px;
  display: grid;
  align-content: center;
  justify-items: center;
  gap: 8px;
  padding: 18px;
  text-align: center;
  transition: border-color 180ms ease, background 180ms ease, transform 180ms ease;
  cursor: pointer;
}

.dropzone.drag-active {
  border-color: var(--accent);
  background: linear-gradient(180deg, #eff7ff, #e8f2fd);
  transform: translateY(-1px);
}

.dropzone:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

#image-input {
  display: none;
}

.dropzone-title {
  margin: 0;
  font-weight: 800;
  font-size: clamp(1rem, 2.5vw, 1.2rem);
}

.dropzone-subtitle,
.file-meta {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.file-meta {
  color: #1a547f;
  font-weight: 700;
}

button {
  font: inherit;
  border: 0;
  border-radius: 11px;
  padding: 11px 14px;
  font-weight: 800;
  cursor: pointer;
  background: var(--accent);
  color: #fff;
  transition: background 150ms ease, transform 100ms ease;
}

button:hover:not(:disabled) {
  background: var(--accent-strong);
}

button:active:not(:disabled) {
  transform: translateY(1px);
}

.site-header .lang-btn {
  border: 1.5px solid #2276d1;
  background: #f4f9ff;
  color: #1964b8;
  padding: 8px 14px;
  border-radius: 10px;
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
}

.site-header .lang-btn:hover:not(:disabled) {
  background: #e7f2ff;
}

.secondary-btn {
  background: #e7f1fb;
  color: #0b4f93;
}

.secondary-btn:hover:not(:disabled) {
  background: #d8eafc;
}

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

.control-row {
  display: grid;
  gap: 12px;
  align-items: end;
}

.count-picker {
  display: grid;
  gap: 7px;
  color: var(--ink);
  font-weight: 700;
}

.count-picker input {
  width: 140px;
  border: 1px solid var(--line-strong);
  background: #fff;
  border-radius: 10px;
  padding: 10px 12px;
  font: inherit;
  font-weight: 700;
  color: var(--ink);
}

.status {
  margin: 0;
  min-height: 1.2em;
  color: #2b5f35;
  font-weight: 700;
}

.results-grid {
  display: grid;
  gap: 16px;
}

.preview-card h2,
.downloads h2 {
  margin: 0 0 10px;
  font-size: 1.02rem;
}

.image-preview-wrap,
.palette-wrap {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px;
  background: #fff;
}

#image-preview,
#palette-preview {
  width: 100%;
  height: auto;
  display: block;
}

.swatches {
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(96px, 1fr));
  gap: 8px;
}

.swatches li {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 6px;
  font-size: 0.78rem;
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
}

.swatches i {
  display: block;
  border-radius: 6px;
  height: 24px;
  margin-bottom: 5px;
  border: 1px solid #0000001f;
}

.download-buttons {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

@media (min-width: 850px) {
  .control-row {
    grid-template-columns: auto auto;
    align-items: end;
    justify-content: start;
  }

  .results-grid {
    grid-template-columns: 1fr 1fr;
  }
}