:root {
  --dfe-color-bg: #0b0b0b;
  --dfe-color-surface-1: #121212;
  --dfe-color-surface-2: #161616;
  --dfe-color-border: #2a2a2a;
  --dfe-color-text: #ffffff;
  --dfe-color-muted: #b0b0b0;
  --dfe-color-muted-2: #d0d0d0;
  --dfe-color-accent: #22c55e;
  --dfe-color-accent-contrast: #0b0b0b;

  --dfe-font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  --dfe-font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;

  --dfe-radius-sm: 10px;
  --dfe-radius-md: 16px;
  --dfe-radius-lg: 28px;

  --dfe-space-1: 6px;
  --dfe-space-2: 10px;
  --dfe-space-3: 12px;
  --dfe-space-4: 18px;
  --dfe-space-5: 28px;
}

[data-theme="light"] {
  --dfe-color-bg: #f7f7f7;
  --dfe-color-surface-1: #ffffff;
  --dfe-color-surface-2: #fafafa;
  --dfe-color-border: #e5e5e5;
  --dfe-color-text: #0b0b0b;
  --dfe-color-muted: #4b5563;
  --dfe-color-muted-2: #111827;
  --dfe-color-accent: #16a34a;
  --dfe-color-accent-contrast: #ffffff;
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
}

body {
  margin: 0;
  padding: 0;
  background: var(--dfe-color-bg);
  color: var(--dfe-color-text);
  font-family: var(--dfe-font-family);
}

a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.ds-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--dfe-space-5);
}

.ds-wrap {
  width: 100%;
  display: flex;
  gap: var(--dfe-space-5);
  align-items: center;
  justify-content: center;
}

.ds-panel {
  width: 540px;
  max-width: calc(100vw - 420px);
  background: var(--dfe-color-surface-2);
  border: 1px solid var(--dfe-color-border);
  border-radius: var(--dfe-radius-md);
  padding: var(--dfe-space-4);
}

.ds-panel-title {
  margin: 0 0 var(--dfe-space-2);
  font-size: 18px;
  font-weight: 700;
}

.ds-text {
  margin: var(--dfe-space-2) 0;
  color: var(--dfe-color-muted);
  font-size: 14px;
  line-height: 1.45;
}

.ds-muted {
  color: var(--dfe-color-muted);
}

.ds-muted-2 {
  color: var(--dfe-color-muted-2);
}

.ds-row {
  display: flex;
  gap: var(--dfe-space-2);
  flex-wrap: wrap;
  align-items: center;
  margin-top: var(--dfe-space-3);
}

.ds-field {
  display: grid;
  gap: var(--dfe-space-2);
  margin-top: var(--dfe-space-3);
}

.ds-label {
  font-weight: 700;
  font-size: 14px;
  color: var(--dfe-color-muted-2);
}

.ds-input {
  width: 100%;
  min-height: 42px;
  padding: 10px 12px;
  border-radius: var(--dfe-radius-sm);
  border: 1px solid var(--dfe-color-border);
  background: var(--dfe-color-surface-1);
  color: var(--dfe-color-text);
  font-family: var(--dfe-font-family);
  font-size: 14px;
  outline: none;
  flex: 1;
  min-width: 220px;
}

.ds-input:focus {
  border-color: color-mix(in srgb, var(--dfe-color-accent) 55%, var(--dfe-color-border));
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--dfe-color-accent) 18%, transparent);
}

.ds-kv {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 8px 12px;
  margin-top: var(--dfe-space-3);
  font-size: 13px;
  color: var(--dfe-color-muted);
}

.ds-kv b {
  color: var(--dfe-color-muted-2);
  font-weight: 700;
}

.ds-btn {
  appearance: none;
  border: 0;
  border-radius: var(--dfe-radius-sm);
  padding: var(--dfe-space-2) var(--dfe-space-3);
  font-weight: 700;
  cursor: pointer;
  background: var(--dfe-color-accent);
  color: var(--dfe-color-accent-contrast);
}

.ds-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.ds-code {
  display: block;
  background: #0f0f0f;
  border: 1px solid var(--dfe-color-border);
  border-radius: var(--dfe-radius-sm);
  padding: var(--dfe-space-3);
  color: #e5e5e5;
  overflow: auto;
  font-family: var(--dfe-font-mono);
  font-size: 12px;
  line-height: 1.4;
}

[data-theme="light"] .ds-code {
  background: #f3f4f6;
  color: #111827;
}

.ds-token {
  font-family: var(--dfe-font-mono);
  word-break: break-all;
  color: #e5e5e5;
}

[data-theme="light"] .ds-token {
  color: #111827;
}

.ds-phone {
  width: 360px;
  height: 740px;
  background: var(--dfe-color-surface-1);
  border: 1px solid var(--dfe-color-border);
  border-radius: var(--dfe-radius-lg);
  position: relative;
  overflow: hidden;
}

.ds-phone-title {
  position: absolute;
  top: 18px;
  left: 18px;
  font-weight: 700;
  font-size: 18px;
}

.ds-phone-logo {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 30px;
}

.ds-phone-logo img {
  width: 100%;
  max-width: 260px;
  height: auto;
  opacity: 0.95;
}

.ds-phone-status {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 110px;
  text-align: center;
  font-size: 14px;
  color: var(--dfe-color-muted-2);
}

.ds-phone-info {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 40px;
  text-align: center;
  font-size: 12px;
  line-height: 1.4;
  white-space: pre-line;
  color: var(--dfe-color-muted);
}

@media (max-width: 980px) {
  .ds-wrap { flex-direction: column; }
  .ds-panel { max-width: 100%; width: 100%; }
}