/* Helm — clean, calm, readable. No framework. */
:root {
  --ink: #1f2a37;
  --ink-soft: #51606f;
  --paper: #f7f8f9;
  --card: #ffffff;
  --line: #e3e7ea;
  --accent: #1f6f5c;       /* deep green — steady, institutional */
  --accent-soft: #e7f2ee;
  --warn: #b54708;
  --warn-soft: #fdf1e6;
  --danger: #b42318;
  --danger-soft: #fbeae9;
  --radius: 10px;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font: 16px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 1.6rem; margin: 0 0 .25rem; }
h2 { font-size: 1.2rem; margin: 1.5rem 0 .5rem; }
h3 { font-size: 1.02rem; margin: 1rem 0 .35rem; }
.subtitle { color: var(--ink-soft); margin: 0 0 1.25rem; }

.topbar { background: #fff; border-bottom: 1px solid var(--line); }
.topbar-inner {
  max-width: 1080px; margin: 0 auto; padding: 0 20px;
  display: flex; align-items: center; gap: 18px; flex-wrap: wrap; min-height: 56px;
}
.brand { font-weight: 700; font-size: 1.15rem; color: var(--ink); }
.brand:hover { text-decoration: none; }
.topbar nav { display: flex; gap: 2px; flex-wrap: wrap; }
.topbar nav a {
  padding: 8px 10px; border-radius: 8px; color: var(--ink-soft); font-size: .92rem;
}
.topbar nav a.active, .topbar nav a:hover { background: var(--accent-soft); color: var(--accent); text-decoration: none; }
.userbox { margin-left: auto; font-size: .88rem; color: var(--ink-soft); display: flex; gap: 12px; }

.container { max-width: 1080px; margin: 28px auto; padding: 0 20px; }
.footer { max-width: 1080px; margin: 40px auto 24px; padding: 16px 20px; color: var(--ink-soft); font-size: .8rem; border-top: 1px solid var(--line); }

.flash {
  background: var(--accent-soft); border: 1px solid var(--accent); color: var(--accent);
  border-radius: var(--radius); padding: 10px 14px; margin-bottom: 18px;
}

.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px 20px; margin-bottom: 18px;
}
.card h2:first-child, .card h3:first-child { margin-top: 0; }
.grid { display: grid; gap: 18px; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }

table { width: 100%; border-collapse: collapse; font-size: .93rem; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--ink-soft); font-weight: 600; font-size: .82rem; text-transform: uppercase; letter-spacing: .03em; }
tr:last-child td { border-bottom: none; }

.badge {
  display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: .76rem; font-weight: 600;
  background: var(--accent-soft); color: var(--accent);
}
.badge.warn { background: var(--warn-soft); color: var(--warn); }
.badge.danger { background: var(--danger-soft); color: var(--danger); }
.badge.muted { background: #eef0f2; color: var(--ink-soft); }

.btn {
  display: inline-block; background: var(--accent); color: #fff; border: none; cursor: pointer;
  padding: 9px 16px; border-radius: 8px; font-size: .93rem; font-weight: 600;
}
.btn:hover { filter: brightness(1.08); text-decoration: none; }
.btn.secondary { background: #fff; color: var(--accent); border: 1px solid var(--accent); }
.btn.small { padding: 5px 10px; font-size: .82rem; }
.btn.danger { background: var(--danger); }

form .field { margin-bottom: 14px; }
label { display: block; font-size: .86rem; font-weight: 600; margin-bottom: 4px; color: var(--ink-soft); }
input[type=text], input[type=email], input[type=password], input[type=date], input[type=number],
select, textarea {
  width: 100%; padding: 9px 11px; border: 1px solid var(--line); border-radius: 8px;
  font: inherit; background: #fff; color: var(--ink);
}
textarea { min-height: 80px; resize: vertical; }
.checks { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 6px; }
.checks label { font-weight: 400; color: var(--ink); display: flex; gap: 8px; align-items: center; }
.inline-form { display: inline; }

.auth-wrap { max-width: 430px; margin: 8vh auto; }
.auth-wrap .brand-big { font-size: 1.7rem; font-weight: 700; text-align: center; display: block; margin-bottom: 6px; color: var(--ink); }
.auth-wrap .tagline { text-align: center; color: var(--ink-soft); margin-bottom: 24px; }
.error { background: var(--danger-soft); border: 1px solid var(--danger); color: var(--danger); border-radius: 8px; padding: 10px 14px; margin-bottom: 16px; font-size: .9rem; }

.lesson-body { max-width: 720px; }
.lesson-body p, .lesson-body li { line-height: 1.65; }
.callout {
  border-left: 4px solid var(--accent); background: var(--accent-soft);
  border-radius: 0 var(--radius) var(--radius) 0; padding: 12px 16px; margin: 18px 0;
}
.callout.amber { border-color: var(--warn); background: var(--warn-soft); }
.callout .label { font-size: .76rem; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; color: var(--accent); display: block; margin-bottom: 4px; }
.callout.amber .label { color: var(--warn); }

.module-head { margin: 26px 0 8px; padding-bottom: 6px; border-bottom: 2px solid var(--accent); display: flex; align-items: baseline; gap: 10px; }
.module-head h2 { margin: 0; }
.module-head .count { color: var(--ink-soft); font-size: .85rem; }

.score-bar { background: #eef0f2; border-radius: 6px; height: 14px; overflow: hidden; }
.score-bar > span { display: block; height: 100%; background: var(--accent); }

.matrix-table td.yes { background: var(--accent-soft); text-align: center; }
.matrix-table td.no { text-align: center; color: #c6ccd2; }
.matrix-wrap { overflow-x: auto; }

.dash-alert { display: flex; gap: 10px; align-items: baseline; padding: 8px 0; border-bottom: 1px solid var(--line); }
.dash-alert:last-child { border-bottom: none; }
.dash-alert .when { color: var(--ink-soft); font-size: .82rem; white-space: nowrap; }
.muted { color: var(--ink-soft); }
.small { font-size: .85rem; }

/* Progressive disclosure: hidden only when JS is present to open them */
.js .reveal { display: none; }
.js .reveal.open { display: block; }
.reveal { margin-top: 12px; padding-top: 12px; border-top: 1px dashed var(--line); }

details.hint { margin: 0 0 10px; }
details.hint summary { cursor: pointer; font-size: .84rem; color: var(--accent); font-weight: 600; }
details.hint .hint-body { font-size: .85rem; color: var(--ink-soft); margin: 6px 0 0; }

.tight td, .tight th { padding: 5px 8px; }
.icon-btns { display: inline-flex; gap: 3px; }
.icon-btns .btn.small { padding: 2px 7px; font-size: .78rem; }
.card h3 .btn.small, .card h2 .btn.small { vertical-align: 2px; margin-left: 6px; }

.topbar-search input[type=search] {
  width: 150px; padding: 6px 10px; border: 1px solid var(--line); border-radius: 8px;
  font: inherit; font-size: .85rem; background: var(--paper);
}
.topbar-search input[type=search]:focus { background: #fff; width: 190px; }

/* Admin */
.impersonate-banner {
  background: var(--warn); color: #fff; padding: 8px 20px; font-size: .9rem;
  display: flex; gap: 14px; align-items: center; justify-content: center;
}
.impersonate-banner button {
  background: #fff; color: var(--warn); border: none; border-radius: 6px;
  padding: 4px 12px; font-weight: 600; cursor: pointer; font-size: .85rem;
}
.stat-row { display: flex; gap: 28px; flex-wrap: wrap; }
.stat { display: flex; flex-direction: column; }
.stat-n { font-size: 1.6rem; font-weight: 700; color: var(--accent); }
.stat-label { font-size: .8rem; color: var(--ink-soft); text-transform: uppercase; letter-spacing: .04em; }