/* Neritic — location & timezone helper.
   Palette mirrors web/styles/variables.scss. No external requests: system font stack only. */

:root {
  --brand-primary: #0099cc;
  --brand-accent: #00ccaa;
  --secondary-color: #66ccff;

  --bg-dark: #0a1628;
  --bg-medium: #152538;
  --bg-light: #1e3447;

  --text-primary: #ffffff;
  --text-secondary: #a0b8cc;
  --text-muted: #6d8599;

  --success: #00cc88;
  --warning: #ffaa00;
  --danger: #ff4466;

  --gradient-card: linear-gradient(135deg, #152538 0%, #1a2d40 100%);
  --border: rgba(102, 204, 255, 0.18);
  --shadow: rgba(102, 204, 255, 0.16);

  --radius: 14px;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial,
    sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, monospace;
}

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

[hidden] {
  display: none !important;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  padding: 2.5rem 1rem 3rem;
  background:
    radial-gradient(1100px 620px at 12% -8%, rgba(0, 204, 170, 0.13), transparent 62%),
    radial-gradient(900px 520px at 100% 0%, rgba(0, 153, 204, 0.18), transparent 60%),
    var(--bg-dark);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.55;
}

.page {
  width: 100%;
  max-width: 40rem;
  margin: 0 auto;
}

/* ---------- Masthead ---------- */

.masthead {
  text-align: center;
  margin-bottom: 2rem;
}

.logo {
  display: block;
  width: min(100%, 17rem);
  height: auto;
  margin: 0 auto;
}

.tagline {
  margin: 0.5rem 0 0;
  color: var(--text-secondary);
  font-size: 0.95rem;
  letter-spacing: 0.02em;
}

/* ---------- Layout ---------- */

.stack {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.card {
  padding: 1.35rem 1.35rem 1.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--gradient-card);
  box-shadow: 0 18px 40px -28px var(--shadow);
}

/* Popup mode: the card that hands the coordinates back to the device page. */
.card-send {
  border-color: rgba(0, 204, 170, 0.4);
  box-shadow: 0 18px 40px -26px rgba(0, 204, 170, 0.35);
}

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

.card-head h2 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.card-hint {
  margin: 0.5rem 0 1.1rem;
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.card-hint code {
  font-family: var(--font-mono);
  font-size: 0.82em;
  padding: 0.1em 0.35em;
  border-radius: 5px;
  background: rgba(102, 204, 255, 0.12);
  color: var(--secondary-color);
}

.card-hint strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* ---------- Badges ---------- */

.badge {
  flex: 0 0 auto;
  padding: 0.2rem 0.6rem;
  border: 1px solid rgba(102, 204, 255, 0.28);
  border-radius: 999px;
  background: rgba(102, 204, 255, 0.1);
  color: var(--text-secondary);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  white-space: nowrap;
}

.badge.is-ok {
  border-color: rgba(0, 204, 136, 0.45);
  background: rgba(0, 204, 136, 0.14);
  color: var(--success);
}

.badge.is-warn {
  border-color: rgba(255, 170, 0, 0.45);
  background: rgba(255, 170, 0, 0.14);
  color: var(--warning);
}

/* ---------- Readout ---------- */

.readout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.7rem;
  margin: 1.1rem 0;
}

.readout > div {
  padding: 0.65rem 0.8rem;
  border: 1px solid rgba(102, 204, 255, 0.12);
  border-radius: 10px;
  background: rgba(10, 22, 40, 0.45);
  min-width: 0;
}

.readout dt {
  margin: 0 0 0.15rem;
  color: var(--text-muted);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.readout dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--text-primary);
  overflow-wrap: anywhere;
}

/* ---------- Controls ---------- */

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: center;
}

.btn {
  flex: 1 1 auto;
  min-height: 2.75rem;
  padding: 0.6rem 1.1rem;
  border-radius: 10px;
  border: 1px solid transparent;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: filter 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}

.btn:focus-visible,
.field input:focus-visible,
.field select:focus-visible,
.snippet:focus-visible {
  outline: 2px solid var(--secondary-color);
  outline-offset: 2px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-accent) 100%);
  color: #04202b;
}

.btn-primary:hover:not(:disabled) {
  filter: brightness(1.1);
}

.btn-ghost {
  border-color: rgba(102, 204, 255, 0.3);
  background: rgba(102, 204, 255, 0.08);
  color: var(--secondary-color);
}

.btn-ghost:hover:not(:disabled) {
  background: rgba(102, 204, 255, 0.16);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

/* ---------- Fields ---------- */

.field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-top: 1rem;
}

.field label {
  color: var(--text-secondary);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.field input,
.field select {
  width: 100%;
  min-height: 2.6rem;
  padding: 0.5rem 0.7rem;
  border: 1px solid rgba(102, 204, 255, 0.25);
  border-radius: 10px;
  background: rgba(10, 22, 40, 0.75);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

.field select {
  font-family: var(--font-sans);
  cursor: pointer;
}

.field input::placeholder {
  color: var(--text-muted);
}

.manual {
  margin-top: 1.15rem;
  padding-top: 1.15rem;
  border-top: 1px solid var(--border);
}

.manual .actions {
  margin-top: 1rem;
}

/* ---------- Status messages ---------- */

.status {
  margin: 0.8rem 0 0;
  font-size: 0.83rem;
  color: var(--text-secondary);
}

.status:empty {
  display: none;
}

.status.is-ok {
  color: var(--success);
}

.status.is-warn {
  color: var(--warning);
}

.status.is-error {
  color: var(--danger);
}

/* ---------- Snippet ---------- */

.snippet {
  margin: 0 0 1rem;
  padding: 0.9rem 1rem;
  border: 1px solid rgba(102, 204, 255, 0.16);
  border-radius: 10px;
  background: rgba(4, 13, 24, 0.85);
  color: #b9f2e6;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.5;
  overflow-x: auto;
  white-space: pre;
}

.snippet.is-empty {
  color: var(--text-muted);
}

/* ---------- Footer ---------- */

.foot {
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.78rem;
}

.foot p {
  margin: 0 0 0.6rem;
}

.foot strong {
  color: var(--text-secondary);
}

/* ---------- Narrow screens ---------- */

@media (max-width: 30rem) {
  body {
    padding: 1.5rem 0.85rem 2.5rem;
  }

  .readout {
    grid-template-columns: minmax(0, 1fr);
  }

  .btn {
    flex: 1 1 100%;
  }
}