/* energycap — the public pages the Green Button Connect registration points at.
   Deliberately tiny and self-contained: no fonts, scripts or assets from any
   other host, because the callback page handles an OAuth authorization code. */

:root {
  --bg: #f8fafc;
  --surface: #ffffff;
  --border: #e2e8f0;
  --ink: #0f172a;
  --ink-2: #475569;
  --ink-3: #64748b;
  --accent: #0e7490;
  --accent-ink: #ffffff;
  --code-bg: #f1f5f9;
  --warn-bg: #fffbeb;
  --warn-border: #fcd34d;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1220;
    --surface: #111c2e;
    --border: #24354f;
    --ink: #e8eef7;
    --ink-2: #a7b6cb;
    --ink-3: #8496ae;
    --accent: #22d3ee;
    --accent-ink: #06202b;
    --code-bg: #0a1526;
    --warn-bg: #241d05;
    --warn-border: #7a5c07;
  }
}

/* so the native number spinner and focus ring follow the page, not the OS default */
html { color-scheme: light dark; }

* { box-sizing: border-box; }

input {
  background: var(--surface);
  color: var(--ink);
  border: 1px solid var(--border);
  border-radius: 6px;
}

body {
  margin: 0;
  padding: 2.5rem 1.25rem 4rem;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Helvetica, Arial, sans-serif;
  -webkit-text-size-adjust: 100%;
}

main { max-width: 44rem; margin: 0 auto; }

header {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  margin-bottom: 2rem;
}

header img { width: 54px; height: 45px; border-radius: 6px; }
header h1 { margin: 0; font-size: 1.5rem; letter-spacing: -0.01em; }
header p { margin: 0.15rem 0 0; color: var(--ink-3); font-size: 0.9rem; }

h2 {
  margin: 2.25rem 0 0.6rem;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--ink-3);
}

h3 { margin: 1.5rem 0 0.4rem; font-size: 1rem; }

p, li { color: var(--ink-2); }
p { margin: 0.7rem 0; }
ul { padding-left: 1.25rem; }
li { margin: 0.35rem 0; }

strong { color: var(--ink); }

a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }

code, pre {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.875em;
}

code { background: var(--code-bg); padding: 0.12em 0.35em; border-radius: 4px; }

pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.85rem 1rem;
  overflow-x: auto;
}

pre code { background: none; padding: 0; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.1rem 1.25rem;
  margin: 1.25rem 0;
}

.note {
  background: var(--warn-bg);
  border: 1px solid var(--warn-border);
  border-radius: 10px;
  padding: 0.9rem 1.1rem;
  margin: 1.25rem 0;
  font-size: 0.94rem;
}

button, .btn {
  display: inline-block;
  font: inherit;
  font-weight: 600;
  background: var(--accent);
  color: var(--accent-ink);
  border: 0;
  border-radius: 8px;
  padding: 0.6rem 1.1rem;
  cursor: pointer;
  text-decoration: none;
}

button.secondary {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--border);
}

button:disabled { opacity: 0.5; cursor: not-allowed; }

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

.muted { color: var(--ink-3); font-size: 0.9rem; }

footer {
  margin-top: 3.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
  color: var(--ink-3);
  font-size: 0.875rem;
}

footer a { color: var(--ink-3); }