:root {
  color-scheme: dark;
  --background: #23242c;
  --panel: #373842;
  --panel-2: #30313a;
  --border: #4a4c58;
  --text: #f7f7fb;
  --muted: #b8bbc8;
  --primary: #5865f2;
  --primary-hover: #6874f7;
  --secondary: #4a4c56;
  --warning-bg: #443d33;
  --warning: #f2b632;
  --danger: #ff8585;
  --accent: #33a7ff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--background);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
input {
  font: inherit;
}

.shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 16px;
}

.panel {
  width: min(100%, 520px);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 26px;
  box-shadow: 0 18px 44px rgb(0 0 0 / 0.28);
}

.header {
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand-logo {
  display: block;
  flex: 0 0 28px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  object-fit: cover;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 26px;
  line-height: 1.15;
  white-space: nowrap;
}

.icon-button {
  width: 32px;
  height: 32px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: #d6d8df;
  font-size: 32px;
  line-height: 1;
  cursor: pointer;
}

.warning {
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 12px;
  margin: 28px 0 24px;
  padding: 14px 16px;
  border: 1px solid var(--warning);
  border-radius: 8px;
  background: var(--warning-bg);
  color: #fff;
  font-weight: 700;
  line-height: 1.35;
}

.warning strong {
  color: var(--warning);
  font-size: 20px;
}

form {
  display: grid;
  gap: 12px;
}

label {
  font-size: 16px;
  font-weight: 800;
}

label span {
  color: var(--danger);
}

input {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel-2);
  color: var(--text);
  padding: 0 14px;
  outline: none;
}

input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgb(88 101 242 / 0.24);
}

.actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 12px;
}

.actions button {
  min-height: 48px;
  border: 0;
  border-radius: 8px;
  color: #fff;
  font-weight: 800;
  cursor: pointer;
}

.secondary {
  background: var(--secondary);
}

.primary {
  background: var(--primary);
}

.primary:hover {
  background: var(--primary-hover);
}

.result {
  margin-top: 26px;
  width: 244px;
  border-left: 5px solid var(--accent);
  border-radius: 6px;
  background: #3b3c45;
  padding: 18px 18px 16px;
}

.result h2 {
  font-size: 17px;
  line-height: 1;
  margin-bottom: 16px;
}

.code-row {
  display: flex;
  align-items: center;
  gap: 14px;
}

output {
  min-width: 132px;
  border: 1px solid #5a5f84;
  border-radius: 4px;
  background: #414353;
  padding: 10px 16px;
  color: #fff;
  font-size: 16px;
  letter-spacing: 1px;
}

#timer {
  color: var(--muted);
  font-size: 13px;
}

.error {
  margin-top: 14px;
  color: var(--danger);
  font-weight: 700;
}

.hidden {
  display: none;
}

@media (max-width: 420px) {
  .panel {
    padding: 20px;
  }

  .header {
    gap: 12px;
  }

  h1 {
    font-size: 22px;
  }

  .actions {
    grid-template-columns: 1fr;
  }

  .result {
    width: 100%;
  }
}