:root {
  --bg: #0f1417;
  --panel: #171f24;
  --panel-border: #2a353c;
  --text: #e7edf0;
  --text-dim: #9fb0b8;
  --accent: #4fc3a1;
  --accent-text: #06211a;
  --danger: #e2725b;
  --radius: 10px;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.5;
}

.page {
  max-width: 960px;
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
}

.page-header h1 {
  margin: 0 0 0.25rem;
  font-size: 1.6rem;
}

.subtitle {
  margin: 0 0 2rem;
  color: var(--text-dim);
}

.layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  align-items: start;
}

@media (max-width: 720px) {
  .layout {
    grid-template-columns: 1fr;
  }
}

.panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.panel h2 {
  margin: 0 0 1.25rem;
  font-size: 1.05rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

fieldset {
  border: none;
  margin: 0 0 1.25rem;
  padding: 0;
}

legend {
  padding: 0;
  margin: 0 0 0.5rem;
  font-size: 0.85rem;
  color: var(--text-dim);
}

.protocol-options {
  display: flex;
  gap: 0.5rem;
}

.protocol-option {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 0.6rem 0.5rem;
  cursor: pointer;
  font-weight: 600;
  transition: border-color 0.15s, background 0.15s;
}

.protocol-option input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.protocol-option:has(input:checked) {
  border-color: var(--accent);
  background: rgba(79, 195, 161, 0.12);
  color: var(--accent);
}

.protocol-option:has(input:focus-visible) {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.field {
  margin-bottom: 1.1rem;
}

.field label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 0.35rem;
}

.field .optional {
  font-weight: 400;
  color: var(--text-dim);
}

.field input,
.field select {
  width: 100%;
  background: #0d1215;
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  padding: 0.6rem 0.7rem;
  color: var(--text);
  font-size: 0.95rem;
}

.field input:focus,
.field select:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.hint {
  margin: 0.3rem 0 0;
  font-size: 0.78rem;
  color: var(--text-dim);
}

.url-display {
  margin-bottom: 1.5rem;
}

.url-display label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 0.35rem;
}

.url-row {
  display: flex;
  gap: 0.5rem;
}

#stream-url {
  flex: 1;
  min-width: 0;
  background: #0d1215;
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  padding: 0.6rem 0.7rem;
  color: var(--accent);
  font-family: "SF Mono", Consolas, Menlo, monospace;
  font-size: 0.85rem;
}

button {
  cursor: pointer;
  border: 1px solid var(--panel-border);
  background: #1d272c;
  color: var(--text);
  border-radius: 8px;
  padding: 0.6rem 1rem;
  font-size: 0.85rem;
  font-weight: 600;
  transition: border-color 0.15s, background 0.15s;
}

button:hover {
  border-color: var(--accent);
}

button:active {
  transform: translateY(1px);
}

button.copied {
  border-color: var(--accent);
  color: var(--accent);
}

.qr-display {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 1.5rem 0 0.5rem;
}

#qr-code {
  background: #fff;
  padding: 12px;
  border-radius: 8px;
  min-height: 200px;
  min-width: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
}

#qr-code svg {
  display: block;
  width: 260px;
  height: 260px;
}

#qr-code .qr-placeholder {
  color: #888;
  font-size: 0.8rem;
  text-align: center;
  max-width: 160px;
}