/* AI subscription portal — one stylesheet for every page. */

:root {
  --bg: #f6f5f2;
  --surface: #ffffff;
  --ink: #1d1d1f;
  --ink-soft: #5c5c63;
  --line: #dedcd6;
  --line-strong: #c4c1b8;
  --accent: #a31f34;          /* MIT red, used sparingly */
  --accent-ink: #ffffff;
  --focus: #2457c5;
  --changed-bg: #fff1c2;      /* staged change: amber tint */
  --changed-edge: #c98a00;
  --removed-ink: #8a8a90;
  --ok-bg: #e8f4ea; --ok-ink: #1f5e2b;
  --info-bg: #e9eef9; --info-ink: #233f7a;
  --err-bg: #fbe9e9; --err-ink: #8a1c1c;
  --radius: 8px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17171a;
    --surface: #1f1f23;
    --ink: #ececef;
    --ink-soft: #a3a3ab;
    --line: #34343a;
    --line-strong: #4a4a52;
    --accent: #e0566b;
    --accent-ink: #17171a;
    --focus: #7fa6ff;
    --changed-bg: #4a3a0e;
    --changed-edge: #e6b23c;
    --removed-ink: #77777f;
    --ok-bg: #18301d; --ok-ink: #9fd8aa;
    --info-bg: #1c2640; --info-ink: #aec3f5;
    --err-bg: #3a1a1a; --err-ink: #f1a9a9;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}

h1 { font-size: 1.45rem; margin: 0 0 .35rem; letter-spacing: -.01em; }
h2 { font-size: 1.05rem; margin: 1.6rem 0 .5rem; }
a { color: var(--focus); }
.muted { color: var(--ink-soft); }
.small { font-size: .875rem; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

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

/* --- Top bar --------------------------------------------------------------- */

.topbar { background: var(--surface); border-bottom: 1px solid var(--line); }
.topbar-inner {
  max-width: 1120px; margin: 0 auto; padding: 10px 16px;
  display: flex; align-items: center; gap: 20px; flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 650; color: var(--ink); text-decoration: none; }
.brand-mark { width: 14px; height: 14px; background: var(--accent); border-radius: 3px; }
.mainnav { display: flex; gap: 4px; flex-wrap: wrap; }
.mainnav a {
  color: var(--ink-soft); text-decoration: none; padding: 6px 10px; border-radius: 6px; font-size: .925rem;
}
.mainnav a:hover { background: var(--bg); color: var(--ink); }
.who { margin-left: auto; display: flex; align-items: center; gap: 12px; font-size: .925rem; }
.who-name { font-weight: 600; }
.role-pill, .tag {
  display: inline-block; font-size: .78rem; padding: 2px 8px; border-radius: 999px;
  background: var(--bg); border: 1px solid var(--line); color: var(--ink-soft); font-weight: 500;
}
.role-switch select { font-size: .875rem; padding: 4px 6px; }
.linkish { background: none; border: 0; padding: 0; color: var(--focus); cursor: pointer; font: inherit; }

.test-banner {
  background: var(--info-bg); color: var(--info-ink); border-bottom: 1px solid var(--line);
  text-align: center; padding: 6px 16px; font-size: .875rem;
}
.session-banner {
  background: var(--changed-bg); border-bottom: 1px solid var(--changed-edge);
  text-align: center; padding: 8px 16px; font-size: .925rem;
}

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

.page { max-width: 1120px; margin: 0 auto; padding: 24px 16px 64px; }
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px; box-shadow: 0 1px 2px rgba(0,0,0,.04);
}
.card.narrow { max-width: 460px; margin: 32px auto; }
.card.narrow-wide { max-width: 760px; margin: 0 auto; }
.card-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; flex-wrap: wrap; margin-bottom: 8px; }
.card-head p { margin: 0; max-width: 62ch; }
.stack { display: grid; gap: 14px; }
.actions { display: flex; gap: 8px; justify-content: flex-end; align-items: center; }
.toolbar { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin: 8px 0 10px; }
.toolbar input[type=search] { flex: 1 1 240px; }
.count { color: var(--ink-soft); font-weight: 400; font-size: .9rem; }
.summary { margin: 4px 0 12px; }

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

input, select, textarea {
  font: inherit; color: inherit; background: var(--surface);
  border: 1px solid var(--line-strong); border-radius: 6px; padding: 6px 8px; min-width: 0;
}
input[readonly] { background: var(--bg); color: var(--ink-soft); }
input[type=checkbox], input[type=radio] { width: 18px; height: 18px; accent-color: var(--accent); }
.field { display: grid; gap: 4px; }
.field > span { font-size: .875rem; font-weight: 600; }
.field input, .field select, .field textarea { width: 100%; }
.inline-field { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; padding: 10px 12px; border-radius: 6px; margin: 12px 0; }
.inline-field label { font-weight: 600; font-size: .925rem; }
label.inline { display: flex; align-items: center; gap: 6px; font-size: .9rem; }
.check { display: flex; gap: 10px; align-items: flex-start; padding: 4px 0; }
fieldset { border: 1px solid var(--line); border-radius: 6px; padding: 10px 14px 12px; margin: 0; }
legend { font-weight: 600; padding: 0 6px; }

.btn {
  display: inline-flex; align-items: center; gap: 6px; font: inherit; font-weight: 550; font-size: .925rem;
  padding: 7px 14px; border-radius: 6px; border: 1px solid var(--line-strong);
  background: var(--surface); color: var(--ink); cursor: pointer; text-decoration: none;
}
.btn:hover { background: var(--bg); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { filter: brightness(1.08); background: var(--accent); }
.btn:disabled { opacity: .45; cursor: not-allowed; filter: none; }
.icon-btn {
  width: 28px; height: 28px; border-radius: 6px; border: 1px solid var(--line-strong);
  background: var(--surface); color: var(--ink-soft); cursor: pointer; font-size: 1.1rem; line-height: 1;
}

/* --- Tables ---------------------------------------------------------------- */

.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); }
table.grid { width: 100%; border-collapse: collapse; font-size: .925rem; }
.grid th, .grid td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: middle; }
.grid thead th { font-size: .8rem; text-transform: uppercase; letter-spacing: .04em; color: var(--ink-soft); background: var(--bg); font-weight: 600; }
.grid tbody th { font-weight: 600; }
.grid tbody tr:last-child > * { border-bottom: 0; }
.grid td input:not([type=checkbox]), .grid td select, .grid th input, .grid th select { width: 100%; max-width: 320px; }
.grid .sub { display: block; font-weight: 400; color: var(--ink-soft); font-size: .85rem; }
.grid .num { text-align: right; font-variant-numeric: tabular-nums; }
.grid .trail { font-size: .85rem; }
.grid .trail div + div { margin-top: 2px; }
.row-inactive > * { color: var(--removed-ink); }

/* --- Staged changes -------------------------------------------------------- */
/* Bold plus a tint plus a marker: never colour alone. */

.is-changed { font-weight: 700; border-color: var(--changed-edge) !important; background: var(--changed-bg); }
.cell-changed { background: var(--changed-bg); }
tr.row-changed > :first-child { box-shadow: inset 4px 0 0 var(--changed-edge); }
tr.row-changed > :first-child::before { content: "● "; color: var(--changed-edge); font-size: .7rem; vertical-align: middle; }
.inline-field.cell-changed { box-shadow: inset 4px 0 0 var(--changed-edge); }
tr.row-removed > * { text-decoration: line-through; color: var(--removed-ink); }
tr.row-removed input:not([type=checkbox]), tr.row-removed select { text-decoration: line-through; }
tr[data-new-row] > * { background: var(--changed-bg); font-weight: 700; }
tr[data-new-row] > :first-child { box-shadow: inset 4px 0 0 var(--changed-edge); }

/* --- Messages -------------------------------------------------------------- */

.flash { padding: 10px 14px; border-radius: 6px; margin-bottom: 14px; }
.flash-success { background: var(--ok-bg); color: var(--ok-ink); }
.flash-info { background: var(--info-bg); color: var(--info-ink); }
.flash-error { background: var(--err-bg); color: var(--err-ink); }

/* --- Review dialog --------------------------------------------------------- */

dialog.review {
  border: 1px solid var(--line); border-radius: var(--radius); padding: 0; width: min(560px, calc(100vw - 32px));
  background: var(--surface); color: var(--ink); box-shadow: 0 20px 50px rgba(0,0,0,.25);
}
dialog.review::backdrop { background: rgba(20,20,24,.45); }
.review-inner { padding: 22px; display: grid; gap: 12px; }
.review-inner h2 { margin: 0; font-size: 1.15rem; }
.review-inner p { margin: 0; }
.review-list { margin: 0; padding: 10px 12px 10px 28px; background: var(--bg); border-radius: 6px; max-height: 320px; overflow: auto; }
.review-list li { padding: 2px 0; }
.review-error { background: var(--err-bg); color: var(--err-ink); padding: 8px 12px; border-radius: 6px; }

/* --- Reports and imports --------------------------------------------------- */

.change { font-weight: 650; font-size: .85rem; padding: 2px 8px; border-radius: 999px; white-space: nowrap; }
.change-start { background: var(--ok-bg); color: var(--ok-ink); }
.change-stop { background: var(--err-bg); color: var(--err-ink); }
.change-account-change { background: var(--info-bg); color: var(--info-ink); }

.counts { list-style: none; padding: 0; display: flex; gap: 8px; flex-wrap: wrap; margin: 12px 0; }
.counts li { border: 1px solid var(--line); border-radius: 6px; padding: 6px 12px; font-size: .9rem; }
.counts li.has-errors { border-color: var(--err-ink); color: var(--err-ink); }
.plan { margin: 0; padding: 0; list-style: none; border: 1px solid var(--line); border-radius: 6px; }
.plan li { padding: 6px 12px; border-bottom: 1px solid var(--line); font-size: .925rem; }
.plan li:last-child { border-bottom: 0; }
.plan .line { display: inline-block; min-width: 82px; color: var(--ink-soft); font-size: .8rem; }
.plan-error li { color: var(--err-ink); }

@media (max-width: 640px) {
  .who { margin-left: 0; width: 100%; }
  .card { padding: 16px; }
}