/* PWA proof-of-concept shell.
   Safe-area padding throughout: in standalone mode the notch and status bar
   overlap the viewport unless viewport-fit=cover is paired with these vars. */

:root {
  color-scheme: light dark;

  --bg: #f5f6f8;
  --surface: #ffffff;
  --border: #e2e5ea;
  --text: #16191d;
  --muted: #5f6773;
  --accent: #1a73e8;
  --accent-text: #ffffff;
  --danger-bg: #fdecea;
  --danger-text: #8a1c13;
  --danger-border: #f3c4bf;

  --radius: 12px;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-left: env(safe-area-inset-left, 0px);
  --safe-right: env(safe-area-inset-right, 0px);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101418;
    --surface: #181d23;
    --border: #2a323b;
    --text: #e8eaed;
    --muted: #9aa3ae;
    --accent: #4c9aff;
    --accent-text: #06111f;
    --danger-bg: #3a1d1a;
    --danger-text: #ffb4ab;
    --danger-border: #5c2b25;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100dvh;
  padding:
    calc(1.25rem + var(--safe-top))
    calc(1.25rem + var(--safe-right))
    calc(1.75rem + var(--safe-bottom))
    calc(1.25rem + var(--safe-left));
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
}

.wrap {
  max-width: 34rem;
  margin: 0 auto;
  display: grid;
  gap: 1rem;
}

h1 {
  font-size: 1.5rem;
  margin: 0;
  letter-spacing: -0.01em;
}

h2 {
  font-size: 1.05rem;
  margin: 0 0 0.35rem;
}

p {
  margin: 0;
}

.muted {
  color: var(--muted);
  font-size: 0.9rem;
}

/* Cards ------------------------------------------------------------------- */

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem;
  display: grid;
  gap: 0.75rem;
}

.card-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.pill {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.15rem 0.6rem;
  white-space: nowrap;
}

.pill.ok {
  color: #0f7b46;
  border-color: #0f7b46;
}

@media (prefers-color-scheme: dark) {
  .pill.ok {
    color: #6ee7a8;
    border-color: #2c6b4b;
  }
}

/* Buttons ----------------------------------------------------------------- */

button,
.button {
  font: inherit;
  font-weight: 600;
  border-radius: 10px;
  padding: 0.7rem 1.1rem;
  border: 1px solid transparent;
  cursor: pointer;
  text-align: center;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 44px; /* comfortable touch target */
}

button:disabled {
  opacity: 0.55;
  cursor: default;
}

.primary {
  background: var(--accent);
  color: var(--accent-text);
}

.secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}

.block {
  width: 100%;
}

/* Forms ------------------------------------------------------------------- */

.field {
  display: grid;
  gap: 0.3rem;
}

label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--muted);
}

input[type="text"],
input[type="password"] {
  font: inherit;
  padding: 0.7rem 0.75rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  min-height: 44px;
  width: 100%;
}

input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.alert {
  background: var(--danger-bg);
  color: var(--danger-text);
  border: 1px solid var(--danger-border);
  border-radius: 10px;
  padding: 0.7rem 0.85rem;
  font-size: 0.9rem;
}

/* Install card ------------------------------------------------------------ */

.hidden {
  display: none !important;
}

.steps {
  margin: 0;
  padding-left: 1.15rem;
  display: grid;
  gap: 0.3rem;
  font-size: 0.9rem;
  color: var(--muted);
}

kbd {
  font: inherit;
  font-size: 0.85em;
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 0.05rem 0.35rem;
  background: var(--bg);
}

ul.items {
  margin: 0;
  padding-left: 1.15rem;
  display: grid;
  gap: 0.25rem;
  font-size: 0.92rem;
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.88em;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 0.05rem 0.3rem;
}

footer {
  color: var(--muted);
  font-size: 0.8rem;
  text-align: center;
}