:root {
  color-scheme: dark;
  font-family: Inter, system-ui, sans-serif;
  line-height: 1.5;
  font-weight: 400;
  background: #0f1115;
  color: #f5f7fb;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  background:
    radial-gradient(circle at top, rgba(88, 141, 255, 0.2), transparent 28%),
    #0f1115;
}

button,
input,
select {
  font: inherit;
}

code {
  font-family: "SFMono-Regular", ui-monospace, monospace;
}

#app {
  width: 100%;
}

/* Layout */

.layout {
  width: min(700px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1.5rem 0 4rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* Card */

.card {
  padding: 1.25rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  background: rgba(18, 22, 31, 0.9);
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.2);
}

.card h2 {
  margin: 0 0 0.85rem;
  font-size: 0.95rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #90a6ff;
}

/* Buttons */

button {
  padding: 0.6rem 1.1rem;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: inherit;
  cursor: pointer;
}

button.primary {
  background: rgba(88, 141, 255, 0.15);
}

button.secondary {
  background: rgba(255, 255, 255, 0.06);
}

button:hover {
  background: rgba(88, 141, 255, 0.28);
}

button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.button-row button {
  flex: 1 1 180px;
}

/* Status */

.status {
  margin: 0.75rem 0 0;
  font-size: 0.875rem;
  color: #c9d2e3;
}

/* Settings */

.settings-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
}

.settings-row input,
.settings-row select {
  height: 2.5rem;
  padding: 0 0.75rem;
  box-sizing: border-box;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: #111722;
  color: inherit;
}

.settings-row select {
  flex: 1;
  min-width: 0;
}

/* WiFi form */

.wifi-form {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.wifi-form input {
  flex: 1 1 140px;
  height: 2.5rem;
  padding: 0 0.75rem;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: #111722;
  color: inherit;
}

.wifi-form button {
  flex: 0 0 auto;
}

/* Network list */

.network-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-top: 0.75rem;
  max-height: 200px;
  overflow-y: auto;
}

.network-list:empty {
  display: none;
}

.network-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.03);
  cursor: pointer;
  font-size: 0.875rem;
}

.network-item:hover {
  background: rgba(88, 141, 255, 0.12);
}

.network-item.selected {
  background: rgba(88, 141, 255, 0.2);
  border: 1px solid rgba(88, 141, 255, 0.4);
}

.network-ssid {
  font-weight: 500;
}

.network-rssi {
  color: #c9d2e3;
  font-size: 0.8rem;
}

/* Details */

details.card > summary {
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 500;
  color: #c9d2e3;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

details.card > summary::-webkit-details-marker {
  display: none;
}

details.card > summary::before {
  content: "\25b8";
  font-size: 0.75em;
  color: #90a6ff;
}

details[open].card > summary::before {
  content: "\25be";
}

.meta {
  margin: 0.5rem 0 0;
  font-size: 0.8rem;
  color: #c9d2e3;
  word-break: break-all;
}

@media (max-width: 480px) {
  .layout {
    width: calc(100% - 1.5rem);
    padding-top: 1rem;
  }
}