:root {
  --bg: #f4f2ee;
  --surface: #ffffff;
  --ink: #1c2230;
  --ink-soft: #5b6475;
  --line: #e2ddd4;
  --brand: #46a8c2;        /* iLearn logo blue */
  --accent: #217891;       /* same blue, deeper, so white text on buttons stays readable */
  --accent-ink: #ffffff;
  --accent-soft: #e3f2f6;
  --ok: #2f7a4b;
  --ok-soft: #e5f3ea;
  --warn: #9a6400;
  --warn-soft: #fbf0d9;
  --err: #a83232;
  --err-soft: #f8e4e2;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(28, 34, 48, .06), 0 6px 24px rgba(28, 34, 48, .06);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171d;
    --surface: #1d2129;
    --ink: #e8e6e1;
    --ink-soft: #a3a9b5;
    --line: #2e333d;
    --brand: #46a8c2;
    --accent: #5ebcd3;
    --accent-ink: #0b1d22;
    --accent-soft: #15323a;
    --ok: #7ccf9a;
    --ok-soft: #1c2f24;
    --warn: #e7b65a;
    --warn-soft: #33291a;
    --err: #ef8d86;
    --err-soft: #3a2120;
    --shadow: none;
  }
}

* { box-sizing: border-box; }

html, body { margin: 0; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: "Heebo", system-ui, -apple-system, "Segoe UI", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

h1 { font-size: 1.6rem; margin: 0 0 .4rem; line-height: 1.25; }
h2 { font-size: 1.15rem; margin: 1.6rem 0 .6rem; }

.muted { color: var(--ink-soft); }
.small { font-size: .875rem; }
.center { text-align: center; }

/* ---------- Top bar ---------- */
.topbar {
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}
.topbar-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: .75rem 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  text-decoration: none;
  color: var(--ink);
  font-weight: 700;
}
.brand-mark {
  width: 34px; height: 34px;
  border-radius: 9px;
  background: var(--brand);
  color: #ffffff;
  display: grid;
  place-items: center;
  font-size: 1.2rem;
}
.nav { display: flex; align-items: center; gap: .25rem; flex-wrap: wrap; }
.nav a, .nav .linklike {
  color: var(--ink-soft);
  text-decoration: none;
  padding: .4rem .7rem;
  border-radius: 8px;
  font-size: .95rem;
}
.nav a:hover, .nav .linklike:hover { background: var(--bg); color: var(--ink); }
.nav a[aria-current="page"] { color: var(--accent); background: var(--accent-soft); font-weight: 500; }
.nav-logout { margin: 0; }
.linklike {
  background: none; border: 0; font: inherit; cursor: pointer;
}

/* ---------- Layout ---------- */
.main {
  flex: 1;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem 16px 3rem;
}
.footer {
  text-align: center;
  color: var(--ink-soft);
  font-size: .85rem;
  padding: 1.5rem 16px;
}
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.75rem;
  margin-bottom: 1.5rem;
}
.card-narrow { max-width: 460px; margin-inline: auto; }
.card-medium { max-width: 720px; margin-inline: auto; }
.page-login .main { display: flex; align-items: center; justify-content: center; }
.page-login .card { width: 100%; }

/* ---------- Forms ---------- */
.form { display: grid; gap: 1rem; margin-top: 1.25rem; }
.form label { display: grid; gap: .3rem; }
.form label > span { font-size: .9rem; font-weight: 500; }
.form-grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.check { display: flex !important; align-items: center; gap: .5rem; grid-template-columns: none; }
.check input { width: 18px; height: 18px; }

input[type=text], input[type=email], input[type=password], input[type=date], input[type=search], select, textarea {
  width: 100%;
  font: inherit;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: .6rem .75rem;
}
input:focus, select:focus, textarea:focus, button:focus-visible, a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}
textarea { min-height: 70px; resize: vertical; }
[dir=rtl] input[dir=ltr] { text-align: left; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .4rem;
  font: inherit;
  font-weight: 500;
  border-radius: 8px;
  padding: .6rem 1.1rem;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
  text-decoration: none;
}
.btn:hover { border-color: var(--ink-soft); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { filter: brightness(1.08); border-color: var(--accent); }
.btn-danger { color: var(--err); }
.btn-danger:hover { border-color: var(--err); }
.btn-small { padding: .3rem .7rem; font-size: .85rem; }
.btn-block { width: 100%; }
.btn[disabled] { opacity: .55; cursor: default; }
.actions { display: flex; gap: .5rem; flex-wrap: wrap; align-items: center; }
.actions form { margin: 0; }

/* ---------- Flash ---------- */
.flash {
  border-radius: 10px;
  padding: .8rem 1rem;
  margin: 0 auto 1.25rem;
  max-width: 1100px;
  border: 1px solid transparent;
}
.flash p { margin: 0; }
.flash-success { background: var(--ok-soft); color: var(--ok); border-color: color-mix(in srgb, var(--ok) 25%, transparent); }
.flash-error { background: var(--err-soft); color: var(--err); border-color: color-mix(in srgb, var(--err) 25%, transparent); }
.flash-info { background: var(--accent-soft); color: var(--accent); }
.card .flash { margin-top: 1rem; }

.cred {
  margin-top: .8rem;
  background: var(--surface);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: .8rem 1rem;
}
.cred-head { display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
.cred pre {
  margin: .6rem 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: .9rem;
  white-space: pre-wrap;
  word-break: break-all;
  text-align: left;
}

/* ---------- Upload ---------- */
.dropzone {
  position: relative;
  display: grid;
  place-items: center;
  text-align: center;
  gap: .4rem;
  min-height: 190px;
  padding: 2rem 1rem;
  border: 2px dashed var(--line);
  border-radius: var(--radius);
  background: var(--bg);
  cursor: pointer;
  transition: border-color .15s, background .15s;
}
.dropzone:hover, .dropzone.is-over { border-color: var(--brand); background: var(--accent-soft); }
.dropzone input[type=file] {
  position: absolute; inset: 0; opacity: 0; cursor: pointer; width: 100%; height: 100%;
}
.dropzone-icon {
  width: 52px; height: 52px; border-radius: 50%;
  background: var(--surface); border: 1px solid var(--line);
  display: grid; place-items: center; font-size: 1.5rem; color: var(--accent);
}
.dropzone-file { font-weight: 500; color: var(--ink); word-break: break-all; }

.progress { display: none; margin-top: 1rem; }
.progress.is-on { display: block; }
.progress-track { height: 8px; background: var(--line); border-radius: 99px; overflow: hidden; }
.progress-bar { height: 100%; width: 0; background: var(--brand); transition: width .2s; }
.progress-bar.is-indeterminate { width: 35%; animation: slide 1.1s ease-in-out infinite; }
@keyframes slide { 0% { margin-inline-start: -35%; } 100% { margin-inline-start: 100%; } }
.progress-label { margin-top: .5rem; font-size: .9rem; color: var(--ink-soft); }

.done {
  text-align: center;
  padding: 1rem 0 .5rem;
}
.done-icon {
  width: 60px; height: 60px; margin: 0 auto .75rem; border-radius: 50%;
  background: var(--ok-soft); color: var(--ok); display: grid; place-items: center; font-size: 1.8rem;
}
.done .actions { justify-content: center; margin-top: 1rem; }
.notes { list-style: none; padding: 0; margin: .5rem 0 0; color: var(--ink-soft); font-size: .9rem; }

/* ---------- Tables ---------- */
.table-wrap { overflow-x: auto; margin: 0 -1.75rem; padding: 0 1.75rem; }
table { width: 100%; border-collapse: collapse; font-size: .92rem; }
th, td { padding: .65rem .6rem; border-bottom: 1px solid var(--line); text-align: start; vertical-align: middle; white-space: nowrap; }
th { font-weight: 500; color: var(--ink-soft); font-size: .82rem; }
tbody tr:hover { background: var(--bg); }
td.wrap { white-space: normal; }
.ltr { direction: ltr; unicode-bidi: isolate; }

.badge { display: inline-block; padding: .12rem .55rem; border-radius: 99px; font-size: .8rem; font-weight: 500; }
.badge-active { background: var(--ok-soft); color: var(--ok); }
.badge-expired { background: var(--warn-soft); color: var(--warn); }
.badge-disabled { background: var(--err-soft); color: var(--err); }

.toolbar { display: flex; gap: .5rem; flex-wrap: wrap; align-items: center; margin: 1rem 0; }
.toolbar input[type=search] { flex: 1 1 220px; width: auto; }
.toolbar select { width: auto; }
.head-row { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; flex-wrap: wrap; }

details.add { margin-top: 1rem; }
details.add > summary { cursor: pointer; list-style: none; display: inline-flex; }
details.add > summary::-webkit-details-marker { display: none; }
details.add[open] > summary { margin-bottom: .5rem; }

.facts { display: grid; grid-template-columns: max-content 1fr; gap: .4rem 1.25rem; margin: 1rem 0; }
.facts dt { color: var(--ink-soft); }
.facts dd { margin: 0; }

.checks { list-style: none; padding: 0; margin: .5rem 0 1rem; }
.checks li { padding: .3rem 0; }
.checks .ok { color: var(--ok); }
.checks .bad { color: var(--err); }

@media (max-width: 600px) {
  .card { padding: 1.25rem; }
  .table-wrap { margin: 0 -1.25rem; padding: 0 1.25rem; }
  h1 { font-size: 1.35rem; }
}
.m0 { margin-top: 0; }