* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #0f1115;
  color: #e6e6e6;
}
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid #23262d;
}
.brand {
  font-weight: 700;
  font-size: 1.1rem;
  color: #e6e6e6;
  text-decoration: none;
  display: flex;
  align-items: center;
}
.brand-logo {
  height: 44px;
  width: auto;
  display: block;
}
.topbar-right { display: flex; align-items: center; gap: 0.75rem; }
.user-email { color: #9aa0a6; font-size: 0.9rem; }
.link-btn {
  background: none;
  border: none;
  color: #9aa0a6;
  cursor: pointer;
  font-size: 0.9rem;
  text-decoration: underline;
  padding: 0;
}
.container { max-width: 640px; margin: 3rem auto; padding: 0 1.5rem; }

.auth-card {
  max-width: 360px;
  margin: 4rem auto;
  padding: 2rem;
  background: #171a21;
  border: 1px solid #23262d;
  border-radius: 10px;
}
.auth-card h1 { font-size: 1.25rem; margin-top: 0; }
.auth-card form { display: flex; flex-direction: column; gap: 1rem; }
.auth-card label { display: flex; flex-direction: column; gap: 0.35rem; font-size: 0.9rem; color: #b7bcc4; }
.auth-card input {
  padding: 0.6rem 0.7rem;
  border-radius: 6px;
  border: 1px solid #2b2f38;
  background: #0f1115;
  color: #e6e6e6;
  font-size: 1rem;
}
.auth-card button, #dropzone ~ button {
  padding: 0.65rem 1rem;
  border-radius: 6px;
  border: none;
  background: #4f7cff;
  color: white;
  font-size: 1rem;
  cursor: pointer;
}
.muted { color: #9aa0a6; }
.small { font-size: 0.8rem; }
.error { color: #ff6b6b; }

.mode-toggle { display: flex; gap: 0.5rem; margin-bottom: 1.25rem; }
.mode-btn {
  padding: 0.5rem 1rem;
  border-radius: 6px;
  border: 1px solid #2b2f38;
  background: transparent;
  color: #9aa0a6;
  cursor: pointer;
  font-size: 0.95rem;
}
.mode-btn.active { background: #4f7cff; color: white; border-color: #4f7cff; }

.options { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 1rem; flex-wrap: wrap; }
.options label.inline { display: flex; align-items: center; gap: 0.5rem; font-size: 0.9rem; color: #b7bcc4; }
.options select {
  padding: 0.35rem 0.5rem;
  border-radius: 6px;
  border: 1px solid #2b2f38;
  background: #0f1115;
  color: #e6e6e6;
}

.dropzone {
  border: 2px dashed #2b2f38;
  border-radius: 12px;
  padding: 3rem 1.5rem;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}
.dropzone.dragover { border-color: #4f7cff; background: #151926; }
.drop-label { font-size: 1.05rem; margin: 0 0 0.5rem; }

.status {
  margin-top: 1.25rem;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  background: #171a21;
  border: 1px solid #23262d;
  font-size: 0.9rem;
}
.status.error { border-color: #ff6b6b; color: #ff6b6b; }