static/style.css

/* ========== Variables & Reset ========== */
:root {
  --bg: #0d1117;
  --bg-secondary: #161b22;
  --border: #30363d;
  --text: #c9d1d9;
  --text-muted: #8b949e;
  --accent: #58a6ff;
  --accent-hover: #79c0ff;
  --danger: #f85149;
  --success: #56d364;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  --radius: 0.5rem;
  --transition: 0.2s ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  padding: 1rem;
}

/* ========== Layout ========== */
header {
  text-align: center;
  margin-bottom: 2rem;
}
header h1 {
  font-size: 2.5rem;
  margin-bottom: 0.25rem;
}
header p {
  color: var(--text-muted);
  font-size: 1.1rem;
}

main {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  gap: 2rem;
}

section {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

h2 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
}
label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

/* ========== Form Elements ========== */
select,
input[type="file"],
input[type="url"],
textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--text);
  font-size: 1rem;
  transition: border-color var(--transition);
}

select:focus,
input:focus,
textarea:focus {
  outline: none;
  border-color: var(--accent);
}

textarea {
  font-family: var(--font-mono);
  resize: vertical;
  min-height: 120px;
}

/* ========== Tabs ========== */
.tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
  overflow-x: auto;
}
.tabs button {
  flex: none;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.5rem 1rem;
  color: var(--text-muted);
  cursor: pointer;
  transition: background-color var(--transition), color var(--transition);
}
.tabs button[aria-selected="true"] {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
}
.tabs button:hover:not([aria-selected="true"]) {
  background: var(--border);
  color: var(--text);
}

/* ========== Actions ========== */
.search-toggle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1rem;
}
.actions {
  display: flex;
  gap: 1rem;
  justify-content: flex-end;
  flex-wrap: wrap;
}
button {
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: var(--radius);
  font-size: 1rem;
  cursor: pointer;
  transition: background-color var(--transition), transform var(--transition);
}
button:hover {
  transform: translateY(-2px);
}
#clear {
  background: var(--border);
  color: var(--text);
}
#clear:hover {
  background: var(--text-muted);
}
#generate {
  background: var(--accent);
  color: var(--bg);
}
#generate:hover {
  background: var(--accent-hover);
}

/* ========== Outputs ========== */
pre, code {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

iframe {
  width: 100%;
  height: 400px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
}

/* ========== Utility ========== */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ========== Responsive ========== */
@media (max-width: 600px) {
  body {
    padding: 0.5rem;
  }
  header h1 {
    font-size: 2rem;
  }
  .actions {
    justify-content: center;
  }
}