:root {
  --page-max: 74rem;
  --page-pad: clamp(1.25rem, 4vw, 3rem);
  --radius-sm: 0.75rem;
  --radius-md: 1.125rem;
  --radius-lg: 1.5rem;
}

* { box-sizing: border-box; }

body {
  min-width: 20rem;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main { flex: 1; }

a { color: var(--color-link); }

button, input { font: inherit; }

button, a, input { -webkit-tap-highlight-color: transparent; }

:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 3px;
}

.page-shell {
  width: min(100% - (var(--page-pad) * 2), var(--page-max));
  margin-inline: auto;
}

.eyebrow {
  margin: 0 0 0.75rem;
  color: var(--color-accent);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.copy-th {
  display: block;
  margin-top: 0.3rem;
  color: var(--color-text-muted);
  font-size: 0.78em;
  font-weight: 500;
  letter-spacing: 0;
  line-height: 1.45;
}

.copy-th--compact { margin-top: 0.12rem; font-size: 0.76em; }

.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--color-border);
  background: var(--color-footer);
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: min(100% - (var(--page-pad) * 2), var(--page-max));
  margin-inline: auto;
  padding: 1.5rem 0;
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

.site-footer__brand { color: var(--color-text); font-weight: 750; }
.site-footer__links { display: flex; flex-wrap: wrap; gap: 1rem; }
.site-footer a { color: inherit; text-decoration: none; }
.site-footer a:hover, .site-footer a:focus-visible { color: var(--color-accent); }

.auth-page {
  display: grid;
  place-items: center;
  padding-block: clamp(2.5rem, 9vw, 6rem);
}

.auth-card, .dashboard-card, .history-empty {
  width: min(100%, 32rem);
  padding: clamp(1.5rem, 5vw, 2.75rem);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-lg);
}

.auth-card h1, .dashboard-card h1, .history-empty h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.8rem, 5vw, 2.5rem);
  letter-spacing: -0.04em;
}

.dashboard-card > section {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.dashboard-card h2 {
  margin: 0 0 0.5rem;
  font-size: 1.15rem;
}

.dashboard-card > section > p {
  color: var(--color-text-muted);
}

.dashboard-card button[disabled] {
  cursor: wait;
  opacity: 0.65;
}

.auth-card > p { margin: 0 0 1.75rem; color: var(--color-text-muted); }
.auth-form { display: grid; gap: 1.1rem; }
.form-field { display: grid; gap: 0.45rem; }
.form-field label { font-size: 0.9rem; font-weight: 700; }
.form-field input {
  width: 100%;
  min-height: 3rem;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  background: var(--color-input);
}
.form-field input:focus { border-color: var(--color-accent); outline: none; }
.button-primary {
  display: inline-grid;
  place-items: center;
  text-decoration: none;
  min-height: 3rem;
  border: 0;
  border-radius: var(--radius-sm);
  color: var(--color-accent-contrast);
  background: var(--color-accent);
  font-weight: 800;
  cursor: pointer;
}
.button-primary:hover:not(:disabled) { filter: brightness(1.08); }
.button-primary:disabled { cursor: not-allowed; opacity: 0.64; }
.button-primary .copy-th { color: inherit; opacity: 0.78; }
[data-auth-message], [data-checkout-message] { min-height: 1.35rem; margin: 0; font-size: 0.9rem; }
[data-auth-message][data-tone="error"], [data-checkout-message][data-tone="error"] { color: var(--color-error); }
[data-auth-message][data-tone="success"], [data-checkout-message][data-tone="success"] { color: var(--color-success); }
.auth-switch { margin: 1.5rem 0 0; color: var(--color-text-muted); text-align: center; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}