:root {
  color-scheme: light dark;
  --bg: #0f1115;
  --panel: #171a21;
  --border: #2a3140;
  --text: #e8ecf4;
  --muted: #9aa7bd;
  --accent: #6ea8ff;
  --accent-strong: #4d88ff;
  --ok: #5fd38d;
  --error: #ff7b7b;
  font-family: "SF Pro Text", "Segoe UI", system-ui, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top, #1a2233, var(--bg) 55%);
  color: var(--text);
}

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 3rem;
}

.site-header {
  text-align: center;
}

.logo {
  display: block;
  width: min(200px, 55vw);
  height: auto;
  margin: 0 auto 0.75rem;
}

header h1 {
  margin: 0 0 0.35rem;
  font-size: 2rem;
  letter-spacing: -0.03em;
}

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

.dropzone {
  margin-top: 2rem;
  padding: 2.5rem 1.5rem;
  border: 2px dashed var(--border);
  border-radius: 16px;
  background: color-mix(in srgb, var(--panel) 92%, transparent);
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.dropzone:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.dropzone.dragover,
.dropzone:hover {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 8%, var(--panel));
}

.drop-title {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
}

.drop-hint {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.status {
  margin-top: 1.25rem;
  padding: 0.9rem 1rem;
  border-radius: 10px;
  background: var(--panel);
  border: 1px solid var(--border);
}

.status.error { border-color: color-mix(in srgb, var(--error) 55%, var(--border)); color: var(--error); }
.status.ok { border-color: color-mix(in srgb, var(--ok) 45%, var(--border)); color: var(--ok); }

.hidden { display: none; }

.results {
  margin-top: 1.5rem;
  padding: 1.25rem;
  border-radius: 14px;
  background: var(--panel);
  border: 1px solid var(--border);
}

.results h2 {
  margin: 0 0 0.75rem;
  font-size: 1.1rem;
}

#notes {
  max-height: 240px;
  overflow: auto;
  margin: 0 0 1rem;
  padding: 0.85rem;
  border-radius: 8px;
  background: #0b0d12;
  border: 1px solid var(--border);
  white-space: pre-wrap;
  font: 0.85rem/1.45 ui-monospace, SFMono-Regular, Menlo, monospace;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.button {
  display: inline-block;
  padding: 0.65rem 1rem;
  border-radius: 999px;
  background: var(--accent-strong);
  color: white;
  text-decoration: none;
  font-weight: 600;
}

.button.secondary {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}

footer {
  margin-top: 2rem;
  color: var(--muted);
  font-size: 0.9rem;
}

footer a { color: var(--accent); }

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.92em;
}