/* Shared styles for all webserial-core demos.
 * Each demo HTML sets its own CSS custom properties in an inline <style> block:
 *   --accent, --accent-dark, --accent-badge, --log-event
 *   --notice-bg, --notice-border, --notice-text, --notice-code-bg  (optional)
 */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family:
    "Segoe UI",
    system-ui,
    -apple-system,
    sans-serif;
  background: #0f0f12;
  color: #e4e4e7;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

#app {
  width: min(640px, 94vw);
  background: #18181b;
  border: 1px solid #27272a;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
}

header {
  padding: 20px 24px;
  border-bottom: 1px solid #27272a;
  display: flex;
  align-items: center;
  gap: 12px;
}

header h1 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--accent);
}

header span {
  font-size: 0.8rem;
  color: #71717a;
}

.badge {
  background: var(--accent);
  color: var(--accent-badge);
  font-size: 0.65rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.controls {
  display: flex;
  gap: 8px;
  padding: 16px 24px;
  border-bottom: 1px solid #27272a;
  flex-wrap: wrap;
}

button {
  padding: 8px 18px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 500;
  transition:
    background 0.2s,
    opacity 0.2s;
}

button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

#btn-connect {
  background: var(--accent);
  color: var(--accent-badge);
}

#btn-connect:hover:not(:disabled) {
  background: var(--accent-dark);
}

#btn-disconnect {
  background: #ef4444;
  color: #fff;
}

#btn-disconnect:hover:not(:disabled) {
  background: #dc2626;
}

.notice {
  margin: 0 24px 16px;
  padding: 14px 16px;
  background: var(--notice-bg, #161616);
  border: 1px solid var(--notice-border, #3f3f46);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--notice-text, #e4e4e7);
}

.notice code {
  background: var(--notice-code-bg, #0f0f0f);
  padding: 1px 5px;
  border-radius: 4px;
  font-family: monospace;
}

.info-text {
  margin: 0 24px 4px;
  padding: 10px 0;
  font-size: 0.8rem;
  line-height: 1.6;
  color: #a1a1aa;
  border-bottom: 1px solid #27272a;
}

.info-text code {
  background: #09090b;
  color: #e4e4e7;
  padding: 1px 5px;
  border-radius: 4px;
  font-family: monospace;
  font-size: 0.78rem;
}

.send-row {
  display: flex;
  gap: 8px;
  padding: 0 24px 16px;
}

.send-row input {
  flex: 1;
  padding: 8px 12px;
  border-radius: 8px;
  border: 1px solid #3f3f46;
  background: #09090b;
  color: #e4e4e7;
  font-size: 0.85rem;
  outline: none;
  transition: border-color 0.2s;
}

.send-row input:focus {
  border-color: var(--accent);
}

.send-row input:disabled {
  opacity: 0.4;
}

#btn-send {
  background: #6366f1;
  color: #fff;
}

#btn-send:hover:not(:disabled) {
  background: #4f46e5;
}

#mode-toggle {
  background: var(--accent);
  color: var(--accent-badge);
  font-weight: 700;
  min-width: 54px;
}

#mode-toggle:hover {
  background: var(--accent-dark);
}

#log {
  height: 340px;
  overflow-y: auto;
  padding: 16px 24px;
  font-family: "Fira Code", "Cascadia Code", monospace;
  font-size: 0.8rem;
  line-height: 1.7;
  background: #09090b;
}

.log-line {
  white-space: pre-wrap;
  word-break: break-all;
}

.log-info {
  color: #a1a1aa;
}

.log-event {
  color: var(--log-event, #38bdf8);
}

.log-data {
  color: #4ade80;
}

.log-error {
  color: #f87171;
}

#log::-webkit-scrollbar {
  width: 6px;
}

#log::-webkit-scrollbar-track {
  background: transparent;
}

#log::-webkit-scrollbar-thumb {
  background: #3f3f46;
  border-radius: 3px;
}

.nav-link {
  display: block;
  text-align: center;
  padding: 10px;
  color: #71717a;
  font-size: 0.78rem;
  text-decoration: none;
  border-top: 1px solid #27272a;
}

.nav-link:hover {
  color: var(--accent);
}

.nav-link + .nav-link {
  border-top: none;
  padding-top: 0;
}