/* The shell (spec §6, §10): layout, the nav bar, banners and notices, buttons, forms, the sign-in screen, the
   agreement and error pages.

   Intention: every screen shares one frame and one set of controls, drawn only from the Orbit skin's tokens, so a
   screen's own stylesheet (today.css, review.css, ...) only adds what is particular to it.
   Design: classes only (the CSP forbids inline styles); colors and fonts come from static/skins/orbit.css; the
   layout is one centered column that widens on large screens. The Google button follows Google's branding: Roboto
   Medium, the four-color mark, and the dark or light variant with the theme. */

/* ---- the frame ---- */

.page { position: relative; z-index: 1; max-width: 1120px; margin: 0 auto; padding: 16px 16px 64px; }

.shell-bar {
  position: relative; z-index: 2; display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  max-width: 1120px; margin: 0 auto; padding: 14px 16px;
}
.shell-brand { color: var(--o-strong); font-weight: 600; letter-spacing: 0.02em; text-decoration: none; }
.shell-nav { display: flex; gap: 4px; flex: 1; flex-wrap: wrap; }
.shell-nav a {
  color: var(--o-muted); text-decoration: none; padding: 6px 12px; border-radius: 999px; font-size: 14px;
}
.shell-nav a:hover { color: var(--o-text); background: var(--o-raised); }
.shell-nav a[aria-current="page"] { color: var(--o-strong); background: var(--o-pill); }
.shell-signout { margin: 0; }

.counters { position: relative; z-index: 1; max-width: 1120px; margin: 0 auto; padding: 0 16px; }

/* ---- cards, text ---- */

.card {
  background: var(--o-card); border: 1px solid var(--o-line); border-radius: 20px; padding: 20px;
  box-shadow: 0 12px 32px var(--o-shadow);
}
.card + .card { margin-top: 16px; }
h1, h2, h3 { color: var(--o-strong); font-weight: 500; line-height: 1.25; margin: 0 0 12px; }
h1 { font-size: 22px; }
h2 { font-size: 18px; }
p { line-height: 1.5; }
a { color: var(--o-blue-soft); }
.muted { color: var(--o-muted); font-size: 14px; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap;
}
code { font-size: 13px; color: var(--o-soft); }

/* ---- notices and banners ---- */

.notice {
  position: relative; z-index: 1; max-width: 1088px; margin: 8px auto; padding: 10px 14px; border-radius: 12px;
  background: var(--o-warn-tint); color: var(--o-text); font-size: 14px;
}
.notice-error { background: var(--o-pink-tint); }
.flash:empty { display: none; }
.banner {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap; max-width: 1088px; margin: 8px auto;
  padding: 12px 16px; border-radius: 14px; background: var(--o-raised); border: 1px solid var(--o-line);
}

/* ---- buttons ---- */

.button {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 40px;
  padding: 0 18px; border-radius: 999px; border: 1px solid var(--o-line); background: var(--o-raised);
  color: var(--o-text); font: inherit; font-size: 14px; text-decoration: none; cursor: pointer;
}
.button:hover { background: var(--o-pill); }
.button:focus-visible, .google-button:focus-visible, .field select:focus-visible, .field input:focus-visible {
  outline: 2px solid var(--o-blue-bright); outline-offset: 2px;
}
.button-primary { background: var(--o-strong); color: var(--o-bg); border-color: var(--o-strong); }
.button-primary:hover { background: var(--o-soft); }
.button-quiet { background: none; border-color: transparent; color: var(--o-muted); }
.button-danger { color: var(--danger); border-color: var(--o-danger-line); }
.button[disabled] { opacity: 0.5; cursor: not-allowed; }

/* ---- chips, tags, links, toasts and tables (every screen) ---- */

a.chip { text-decoration: none; display: inline-block; }
.chip {
  border: 1px solid var(--o-line); background: var(--o-card); color: var(--o-soft); border-radius: 999px;
  padding: 4px 12px; font: inherit; font-size: 13px; cursor: pointer;
}
.chip-on { background: var(--o-pill); color: var(--o-strong); border-color: var(--o-pill); }
.tag { display: inline-flex; align-items: center; gap: 4px; font-size: 12px; padding: 2px 8px; border-radius: 999px; }
.tag-check { background: var(--o-warn-tint); color: var(--o-text); }
.icon { width: 12px; height: 12px; fill: var(--o-warn); }
.link {
  background: none; border: 0; padding: 0; color: var(--o-blue-soft); font: inherit; font-size: 13px;
  text-decoration: underline; cursor: pointer;
}
.link-danger { color: var(--danger); }
.chips { display: flex; gap: 6px; flex-wrap: wrap; margin: 0 0 12px; }
.toast { list-style: none; padding: 10px 14px; border-radius: 12px; background: var(--o-pill); }
.counter { font-size: 13px; color: var(--o-muted); margin: 0; }
.counter-warn { color: var(--o-warn); }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--o-line); }
th { color: var(--o-soft); font-weight: 500; }

/* ---- forms ---- */

.form { display: grid; gap: 14px; max-width: 520px; }
.field { display: grid; gap: 6px; font-size: 14px; color: var(--o-soft); }
.field select, .field input, .field textarea {
  min-height: 40px; padding: 0 12px; border-radius: 12px; border: 1px solid var(--o-line);
  background: var(--o-raised); color: var(--o-text); font: inherit;
}
.field textarea { padding: 10px 12px; min-height: 96px; }

/* ---- sign-in ---- */

.signin {
  position: relative; z-index: 1; display: flex; flex-direction: column; align-items: center; gap: 12px;
  max-width: 440px; margin: 0 auto; padding: 56px 20px; text-align: center;
}
.signin-art { opacity: 0.9; }
.signin-title { font-size: 28px; margin: 4px 0 0; }
.signin-heading { font-size: 18px; margin: 8px 0 0; }
.signin-lede { color: var(--o-soft); margin: 0; }
.signin-form { display: flex; flex-direction: column; align-items: center; gap: 12px; margin-top: 8px; }
.signin-summary {
  color: var(--o-muted); font-size: 13px; text-align: left; background: var(--o-card);
  border: 1px solid var(--o-line); border-radius: 14px; padding: 12px 14px; margin: 0;
}
.signin-agree { display: flex; gap: 10px; align-items: flex-start; text-align: left; font-size: 14px; }
.signin-agree input { margin-top: 3px; width: 18px; height: 18px; }
.signin-fine { color: var(--o-faint); font-size: 12px; }

.google-button {
  display: inline-flex; align-items: center; gap: 12px; height: 40px; padding: 0 16px 0 12px;
  border-radius: 999px; border: 1px solid var(--o-g-line); background: var(--o-g-bg); color: var(--o-g-text);
  font-family: "Roboto", system-ui, sans-serif; font-weight: 500; font-size: 14px; letter-spacing: 0.25px;
  cursor: pointer;
}
.google-button:hover { background: var(--o-g-hover); }
.google-mark { flex: none; }

/* ---- the agreement, First sign-in and errors ---- */

.agreement { max-width: 760px; margin: 0 auto; }
.agreement-text ol { padding-left: 20px; display: grid; gap: 10px; }
.agreement-text li { line-height: 1.55; color: var(--o-soft); }
.agreement-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 20px; }
.agreement-actions form { margin: 0; }
.welcome { max-width: 560px; margin: 24px auto; }
.error-page { max-width: 560px; margin: 48px auto; text-align: center; }

@media (min-width: 900px) {
  .page { padding: 24px 32px 80px; }
  .shell-bar { padding: 18px 32px; }
}