/* StreamSoft Learn - teal and white, the StreamSoft palette (Sluice's teal #0D9488, header #0F766E). */
:root {
  --teal: #0D9488;
  --teal-dark: #0F766E;
  --teal-deep: #115E59;
  --teal-tint: #CCFBF1;
  --teal-wash: #F0FDFA;
  --ink: #1A1A1A;
  --muted: #5D5D5D;
  --faint: #8A8A8A;
  --line: #E5E5E5;
  --bg: #F9F9F9;
  --card: #FFFFFF;
  --danger: #C42B1C;
  --ok: #0F7B0F;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(0,0,0,.05), 0 4px 16px rgba(15,118,110,.06);
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body { font-family: "Segoe UI Variable Text", "Segoe UI", system-ui, -apple-system, Roboto, Arial, sans-serif; color: var(--ink); background: var(--bg); line-height: 1.55; font-size: 16px; }
a { color: var(--teal-dark); }
a:hover { color: var(--teal-deep); }
h1, h2, h3 { font-family: "Segoe UI Variable Display", "Segoe UI", system-ui, sans-serif; line-height: 1.2; margin: 0 0 .5em; }
h1 { font-size: clamp(1.9rem, 4vw, 2.8rem); }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.1rem; }
p { margin: 0 0 1em; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 460px; }

/* Header */
.top { background: var(--teal-dark); color: #fff; }
.top .wrap { display: flex; align-items: center; gap: 24px; min-height: 64px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; color: #fff; text-decoration: none; font-weight: 700; font-size: 1.15rem; }
.brand .mark { width: 32px; height: 32px; border-radius: 8px; background: #fff; color: var(--teal-dark); display: grid; place-items: center; font-weight: 800; }
.brand small { font-weight: 400; opacity: .85; }
.top nav { margin-left: auto; display: flex; gap: 6px; flex-wrap: wrap; }
.top nav a { color: #fff; text-decoration: none; padding: 8px 12px; border-radius: 6px; font-weight: 500; }
.top nav a:hover { background: rgba(255,255,255,.14); }
.top nav a.cta { background: #fff; color: var(--teal-dark); }

/* Hero */
.hero { background: linear-gradient(160deg, var(--teal-dark), var(--teal) 70%); color: #fff; padding: 64px 0 72px; }
.hero .wrap { display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; align-items: center; }
.hero p.lead { font-size: 1.15rem; opacity: .95; max-width: 34em; }
.hero .actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 20px; }
.screen { background: #fff; color: var(--ink); border-radius: 12px; box-shadow: 0 20px 50px rgba(0,0,0,.25); overflow: hidden; font-size: .85rem; }
.screen .bar { background: var(--teal-deep); color: #fff; display: flex; justify-content: space-between; padding: 8px 14px; font-weight: 600; }
.screen .body { padding: 16px 18px; }
.screen .opt { border: 1px solid var(--line); border-radius: 6px; padding: 7px 10px; margin: 6px 0; display: flex; gap: 8px; }
.screen .opt.sel { border-color: var(--teal); background: var(--teal-wash); }
.screen .foot { border-top: 1px solid var(--line); display: flex; justify-content: space-between; padding: 8px 14px; color: var(--muted); }
@media (max-width: 860px) { .hero .wrap { grid-template-columns: 1fr; } }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border: 1px solid var(--teal); background: var(--teal); color: #fff; padding: 10px 18px; border-radius: 6px; font: inherit; font-weight: 600; cursor: pointer; text-decoration: none; }
.btn:hover { background: var(--teal-dark); color: #fff; }
.btn.light { background: #fff; color: var(--teal-dark); border-color: #fff; }
.btn.light:hover { background: var(--teal-tint); }
.btn.ghost { background: transparent; color: var(--teal-dark); }
.btn.ghost:hover { background: var(--teal-wash); }
.btn.on-teal { background: transparent; border-color: rgba(255,255,255,.7); }
.btn.on-teal:hover { background: rgba(255,255,255,.12); }
.btn.small { padding: 6px 12px; font-size: .9rem; }
.btn.danger { background: #fff; color: var(--danger); border-color: var(--danger); }
.btn:disabled { opacity: .55; cursor: default; }

/* Sections and cards */
section { padding: 56px 0; }
section.alt { background: #fff; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.grid { display: grid; gap: 18px; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); }
.card h3 { margin-bottom: .35em; }
.feature .icon { width: 40px; height: 40px; border-radius: 10px; background: var(--teal-tint); color: var(--teal-dark); display: grid; place-items: center; font-weight: 800; margin-bottom: 10px; }
.muted { color: var(--muted); }
.small { font-size: .9rem; }
.price { font-size: 1.6rem; font-weight: 700; color: var(--teal-dark); }
.price small { font-size: .9rem; font-weight: 400; color: var(--muted); }
.pill { display: inline-block; padding: 2px 10px; border-radius: 999px; background: var(--teal-tint); color: var(--teal-deep); font-size: .8rem; font-weight: 600; }
.pill.grey { background: #EEE; color: var(--muted); }
.pill.red { background: #FDE7E4; color: var(--danger); }
.exam-card { display: flex; flex-direction: column; gap: 10px; }
.exam-card .buy { display: flex; gap: 8px; flex-wrap: wrap; margin-top: auto; }
.domains { margin: 0; padding-left: 18px; color: var(--muted); font-size: .9rem; }
.notice { border-left: 4px solid var(--teal); background: var(--teal-wash); padding: 12px 16px; border-radius: 6px; margin: 16px 0; }
.notice.error { border-color: var(--danger); background: #FDF1EF; }
.notice.ok { border-color: var(--ok); background: #EEF8EE; }

/* Forms */
form .field { margin-bottom: 14px; }
label { display: block; font-weight: 600; margin-bottom: 4px; font-size: .95rem; }
input[type=email], input[type=password], input[type=text], input[type=number], select, textarea {
  width: 100%; padding: 10px 12px; border: 1px solid #D1D1D1; border-radius: 6px; font: inherit; background: #fff; color: var(--ink);
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--teal); outline-offset: 0; border-color: var(--teal); }
.check { display: flex; gap: 8px; align-items: flex-start; font-weight: 400; }
.auth { padding: 48px 0 72px; }
.auth .card { padding: 28px; }

/* Tables */
table { width: 100%; border-collapse: collapse; font-size: .95rem; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: .85rem; }
.table-wrap { overflow-x: auto; }

/* Account tabs */
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin-bottom: 20px; flex-wrap: wrap; }
.tabs button { background: none; border: none; padding: 10px 14px; font: inherit; color: var(--muted); cursor: pointer; border-bottom: 3px solid transparent; }
.tabs button.on { color: var(--teal-dark); border-bottom-color: var(--teal); font-weight: 600; }
[hidden] { display: none !important; }

/* Score report */
.score { display: flex; gap: 24px; align-items: center; flex-wrap: wrap; }
.score .big { font-size: 2.6rem; font-weight: 800; color: var(--teal-dark); }
.bar { height: 10px; border-radius: 6px; background: #EEE; overflow: hidden; }
.bar > span { display: block; height: 100%; background: var(--teal); }
.review-item { border-top: 1px solid var(--line); padding: 14px 0; }
.review-item .ok { color: var(--ok); font-weight: 700; }
.review-item .no { color: var(--danger); font-weight: 700; }

footer { background: var(--teal-deep); color: #E6FFFA; padding: 28px 0; font-size: .9rem; }
footer a { color: #fff; }
footer .wrap { display: flex; gap: 20px; flex-wrap: wrap; justify-content: space-between; }