:root {
  --bg: #0f1115;
  --fg: #e6e6e6;
  --muted: #9aa0a6;
  --accent: #6ee7b7;
  --border: #2a2f3a;
  --code-bg: #181b22;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.5;
}

header, main, footer {
  max-width: 720px;
  margin: 0 auto;
  padding: 1.5rem 1rem;
}

header h1 {
  margin: 0;
  font-size: 2rem;
  letter-spacing: -0.02em;
}

header h1 a { color: inherit; text-decoration: none; }

.tagline {
  margin: 0.25rem 0 0;
  color: var(--muted);
}

form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin: 1.5rem 0;
}

label { font-weight: 600; }

textarea,
select {
  width: 100%;
  padding: 0.75rem;
  font-family: inherit;
  font-size: 1rem;
  background: var(--code-bg);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 6px;
}

textarea {
  resize: vertical;
}

button {
  align-self: flex-start;
  padding: 0.6rem 1.2rem;
  font-size: 1rem;
  background: var(--accent);
  color: #0f1115;
  border: 0;
  border-radius: 6px;
  cursor: pointer;
}

button:disabled { opacity: 0.6; cursor: progress; }

pre {
  background: var(--code-bg);
  padding: 1rem;
  border-radius: 6px;
  overflow-x: auto;
  border: 1px solid var(--border);
}

/* ---- result section: trust pill, summary, annotated command ---- */

.result-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.result-header h2 {
  margin: 0;
}

.trust-pill {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  border: 1px solid transparent;
}

.trust-pill[data-tier="syntax"] {
  background: rgba(110, 231, 183, 0.1);
  color: var(--accent);
  border-color: rgba(110, 231, 183, 0.25);
}

.trust-pill[data-tier="syntax-warn"] {
  background: rgba(245, 158, 11, 0.1);
  color: #f59e0b;
  border-color: rgba(245, 158, 11, 0.3);
}

.summary-panel {
  display: grid;
  grid-template-columns: max-content 1fr;
  column-gap: 0.75rem;
  row-gap: 0.25rem;
  margin: 0 0 0.75rem 0;
  font-size: 0.95rem;
}

.summary-panel dt {
  color: var(--muted);
  font-weight: 600;
}

.summary-panel dd {
  margin: 0;
}

/* Annotated command tokens */
#output {
  white-space: pre-wrap;
  word-break: break-word;
}

#output .flag {
  border-bottom: 1px dotted var(--accent);
  cursor: help;
  border-radius: 2px;
  padding: 0 1px;
}

#output .flag:hover,
#output .flag:focus {
  background: rgba(110, 231, 183, 0.15);
  outline: none;
}

#output .flag.flag-unknown {
  border-bottom-color: #f59e0b;
  border-bottom-style: solid;
}

#output .flag.flag-unknown:hover,
#output .flag.flag-unknown:focus {
  background: rgba(245, 158, 11, 0.15);
}

#output .flag-value {
  border-bottom: 1px dotted var(--muted);
  cursor: help;
  border-radius: 2px;
  padding: 0 1px;
}

#output .flag-value:hover,
#output .flag-value:focus {
  background: rgba(255, 255, 255, 0.04);
  outline: none;
}

.flag-explanation {
  margin: 0.5rem 0 0;
  padding: 0.5rem 0.75rem;
  background: var(--code-bg);
  border-left: 2px solid var(--border);
  border-radius: 4px;
  color: var(--muted);
  font-size: 0.92rem;
  min-height: 1.6em;
}

.flag-explanation code {
  background: rgba(110, 231, 183, 0.1);
  color: var(--accent);
  padding: 0 0.25rem;
  border-radius: 3px;
}

.flag-explanation a {
  color: var(--accent);
  text-decoration: none;
  margin-left: 0.25rem;
}

.flag-explanation a:hover {
  text-decoration: underline;
}

/* ---- file picker ---- */

#file-zone {
  border: 1px dashed var(--border);
  border-radius: 6px;
  padding: 1rem;
  background: var(--code-bg);
  text-align: center;
}

#file-zone.drag {
  border-color: var(--accent);
  background: rgba(110, 231, 183, 0.05);
}

#file-zone-label {
  display: inline-block;
  color: var(--muted);
  cursor: pointer;
  font-weight: normal;
}

#file-list {
  list-style: none;
  padding: 0;
  margin: 0.5rem 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

#file-list li {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.25rem 0.5rem;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

#file-list button {
  background: transparent;
  color: var(--muted);
  padding: 0;
  font-size: 1rem;
  line-height: 1;
  cursor: pointer;
  border: 0;
}

#file-list button:hover {
  color: var(--fg);
}

#file-list .file-kind {
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.05rem 0.35rem;
  border-radius: 3px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.04);
  cursor: help;
}

#file-list li[data-kind="list"] .file-kind {
  color: #f59e0b;
  background: rgba(245, 158, 11, 0.1);
}

code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }

nav {
  margin-top: 2rem;
  color: var(--muted);
  font-size: 0.95rem;
}

nav a { color: var(--accent); text-decoration: none; }
nav a:hover { text-decoration: underline; }

article { margin: 1.5rem 0; }

footer {
  color: var(--muted);
  font-size: 0.9rem;
  border-top: 1px solid var(--border);
  margin-top: 3rem;
}

footer a {
  color: var(--muted);
  text-decoration: none;
}

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

footer .ffmpeg-link {
  color: var(--accent);
  font-weight: 600;
}

footer .dot {
  margin: 0 0.4rem;
  color: var(--border);
}

footer .footer-note {
  margin-top: 0.25rem;
  font-size: 0.85rem;
}

a.cta {
  display: inline-block;
  padding: 0.6rem 1rem;
  background: var(--accent);
  color: #0f1115;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
}

a.cta:hover {
  filter: brightness(1.05);
}