:root {
  --bg: #111418;
  --panel: #1a1f26;
  --panel2: #222a33;
  --fg: #e6edf3;
  --muted: #8b98a5;
  --accent: #6aa3ff;
  --accent-2: #4884e0;
  --ok: #6fcf97;
  --err: #ff6b6b;
  --border: #2a3440;
}

* { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0;
  background: var(--bg); color: var(--fg);
  font: 15px/1.45 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

body.center {
  min-height: 100vh; display: grid; place-items: center;
}

header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px; border-bottom: 1px solid var(--border);
}
header h1 { margin: 0; font-size: 20px; letter-spacing: 0.5px; }

main {
  max-width: 720px; margin: 0 auto; padding: 24px 20px 80px;
}

h1 { margin: 0 0 12px; }
.muted { color: var(--muted); }
.error { color: var(--err); }
code { background: var(--panel2); padding: 2px 6px; border-radius: 4px; }

.card {
  background: var(--panel); border: 1px solid var(--border);
  padding: 28px; border-radius: 12px; width: min(92vw, 360px);
  display: flex; flex-direction: column; gap: 12px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.25);
}
.card h1 { text-align: center; }
.card input[name="code"] {
  font-size: 28px; letter-spacing: 8px; text-align: center;
  padding: 12px; border-radius: 8px;
  background: var(--panel2); color: var(--fg);
  border: 1px solid var(--border);
}

button, .btn {
  background: var(--accent); color: #0b1220; border: 0;
  padding: 10px 16px; border-radius: 8px; font-weight: 600;
  cursor: pointer; font-size: 15px;
}
button:hover, .btn:hover { background: var(--accent-2); color: #fff; }
button.ghost {
  background: transparent; color: var(--muted);
  border: 1px solid var(--border);
}
button.ghost:hover { color: var(--fg); background: var(--panel2); }

.dropzone {
  margin-top: 20px; padding: 48px 20px; border-radius: 14px;
  border: 2px dashed var(--border); text-align: center;
  background: var(--panel);
  transition: border-color 120ms, background 120ms;
}
.dropzone.drag {
  border-color: var(--accent); background: #18232e;
}
.dropzone p { margin: 4px 0; }
.dropzone .btn-row {
  display: inline-flex; gap: 10px; margin-top: 14px; flex-wrap: wrap;
  justify-content: center;
}
.dropzone .btn { display: inline-block; }
.dropzone .small { font-size: 12px; margin-top: 10px; }

.options {
  margin-top: 18px; background: var(--panel); border: 1px solid var(--border);
  border-radius: 10px; padding: 10px 14px;
}
.options summary { cursor: pointer; color: var(--muted); }
.options[open] summary { color: var(--fg); margin-bottom: 10px; }
.options label {
  display: flex; align-items: center; gap: 8px;
  margin: 8px 0; flex-wrap: wrap;
}
.options input[type="text"] {
  flex: 1; min-width: 160px;
  background: var(--panel2); border: 1px solid var(--border);
  color: var(--fg); padding: 8px 10px; border-radius: 6px;
}

.hidden { display: none; }

#progress { margin-top: 20px; }
.bar {
  height: 10px; background: var(--panel2); border-radius: 10px; overflow: hidden;
}
#bar-fill {
  height: 100%; width: 0; background: var(--accent);
  transition: width 120ms linear;
}
#status { margin-top: 8px; }

#result, #decision {
  margin-top: 20px; padding: 16px 18px; border-radius: 10px;
  background: var(--panel); border: 1px solid var(--border);
}
#result.ok  { border-color: rgba(111,207,151,0.5); }
#result.err { border-color: rgba(255,107,107,0.5); }
#result h3, #decision h3 { margin: 0 0 8px; }
#result ul { margin: 6px 0 0 20px; padding: 0; }

#decision .suggestion-row {
  display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0 12px;
}
#decision .suggestion-row button.suggest {
  background: var(--panel2); color: var(--fg); border: 1px solid var(--border);
  padding: 8px 12px; border-radius: 8px; font-weight: 500; cursor: pointer;
}
#decision .suggestion-row button.suggest:hover {
  border-color: var(--accent); color: #fff;
}
#decision .suggestion-row button.suggest.primary {
  background: var(--accent); color: #0b1220; border-color: var(--accent);
  font-weight: 600;
}
#decision .suggestion-row button.suggest.primary:hover {
  background: var(--accent-2); color: #fff;
}
#decision .custom-row {
  display: flex; gap: 8px; margin-top: 6px; flex-wrap: wrap;
}
#decision .custom-row input {
  flex: 1; min-width: 180px;
  background: var(--panel2); border: 1px solid var(--border);
  color: var(--fg); padding: 8px 10px; border-radius: 8px;
}
#decision .cancel-row { margin-top: 12px; }
#decision .cancel-row { display: flex; gap: 8px; flex-wrap: wrap; }

#decision .group-header {
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin: 0 0 10px;
  text-transform: uppercase;
}

.toast {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translate(-50%, -12px);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 18px;
  color: var(--fg);
  font-size: 14px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms ease, transform 180ms ease;
  z-index: 1000;
  max-width: min(92vw, 520px);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}