:root {
  --color-bg: #10131a;
  --color-surface: #161b26;
  --color-border: #232a38;
  --color-text: #e9edf5;
  --color-text-muted: #7a8394;
  --color-primary: #7ee8c8;
  --color-primary-hover: #a6f3dc;
  --color-on-primary: #0b0e13;
  --color-danger: #ff6b6b;
  --color-success: #7ee8c8;
  --radius: 8px;
  --radius-card: 8px;
  --max-width: 960px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
}

a {
  color: var(--color-primary);
}

.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.site-title {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  text-decoration: none;
  color: var(--color-text);
}

.site-nav a {
  text-decoration: none;
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.5rem 1.25rem 3rem;
}

h1 {
  margin-top: 0;
  font-size: 1.875rem;
  font-weight: 700;
}

/* Tool card grid on the index page */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

.tool-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 1.25rem;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  transition: box-shadow 0.15s ease, transform 0.15s ease;
}

.tool-card:hover {
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.08);
  transform: translateY(-2px);
}

.tool-card__eyebrow {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--color-primary);
}

.tool-card__name {
  font-size: 1.1rem;
  font-weight: 700;
}

.tool-card__description {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.tool-card__cta {
  margin-top: 0.25rem;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-primary);
}

/* Shared tool page layout */
.tool-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-top: 1rem;
}

.field {
  margin-bottom: 1rem;
}

.field label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

textarea,
input[type="text"],
input[type="color"],
select {
  font-family: inherit;
  font-size: 0.95rem;
  padding: 0.5rem 0.65rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
  color: var(--color-text);
  width: 100%;
}

textarea {
  min-height: 220px;
  resize: vertical;
  font-family: "SFMono-Regular", Consolas, Menlo, monospace;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1rem 0;
}

button {
  font: inherit;
  font-weight: 600;
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  border: 1px solid var(--color-primary);
  background: var(--color-primary);
  color: var(--color-on-primary);
  cursor: pointer;
}

button:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
}

button.secondary {
  background: var(--color-surface);
  color: var(--color-primary);
}

button.secondary:hover {
  background: var(--color-bg);
}

.status-message {
  font-weight: 600;
  margin: 0.5rem 0;
  min-height: 1.4em;
}

.status-message.error {
  color: var(--color-danger);
}

.status-message.success {
  color: var(--color-success);
}

/* Color palette generator */
.scheme-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: flex-end;
}

.scheme-controls .field {
  margin-bottom: 0;
}

.color-input-row {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.color-input-row input[type="color"] {
  width: 3rem;
  height: 2.4rem;
  padding: 0.15rem;
}

.color-input-row input[type="text"] {
  width: 8rem;
}

.palette {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.swatch {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  background: var(--color-surface);
  text-align: left;
  font: inherit;
  color: var(--color-text);
  padding: 0;
}

.swatch__color {
  height: 90px;
}

.swatch__info {
  padding: 0.5rem 0.6rem;
  font-size: 0.8rem;
  line-height: 1.4;
}

.swatch__hex {
  font-weight: 700;
  font-family: "SFMono-Regular", Consolas, Menlo, monospace;
}

@media (max-width: 480px) {
  .site-header__inner {
    flex-direction: column;
    align-items: flex-start;
  }
}