/* Палитра из лендинга NovTeach: синий + оранжевый + лавандовые пятна, скруглённые белые карточки */
:root {
  --bg: #F5F5F7;
  --card: #FFFFFF;
  --text: #0E1A4A;
  --muted: #7C86A8;
  --line: #E4E8F4;
  --primary: #1B3FA0;
  --primary-2: #2A56D6;
  --primary-ink: #FFFFFF;
  --accent: #FF7A00;
  --accent-2: #F26B00;
  --soft: #D5DCF0;
  --soft-ink: #C9D2EC;
  --input: #F3F5FB;
  --ok: #17915B;
  --warn: #C77700;
  --danger: #D23B3B;
  --shadow: 0 8px 30px rgba(20, 40, 110, .08);
  --radius: 24px;
  --hero: linear-gradient(135deg, #163A9C 0%, #2A56D6 100%);
  --cta: linear-gradient(135deg, #FF8A00 0%, #F26B00 100%);
}
:root[data-theme="dark"] {
  --bg: #0B1230;
  --card: #131C44;
  --text: #EEF1FF;
  --muted: #8E99C4;
  --line: #222D62;
  --primary: #6B8CFF;
  --primary-2: #4C74E8;
  --primary-ink: #0B1230;
  --soft: #1C2760;
  --soft-ink: #26326F;
  --input: #0F1839;
  --ok: #3ED598;
  --warn: #FFB54D;
  --danger: #FF7A7A;
  --shadow: 0 8px 30px rgba(0, 0, 0, .35);
  --hero: linear-gradient(135deg, #14245E 0%, #1F3C9E 100%);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0B1230; --card: #131C44; --text: #EEF1FF; --muted: #8E99C4; --line: #222D62;
    --primary: #6B8CFF; --primary-2: #4C74E8; --primary-ink: #0B1230; --soft: #1C2760; --soft-ink: #26326F;
    --input: #0F1839; --ok: #3ED598; --warn: #FFB54D; --danger: #FF7A7A;
    --shadow: 0 8px 30px rgba(0, 0, 0, .35); --hero: linear-gradient(135deg, #14245E 0%, #1F3C9E 100%);
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: "Manrope", -apple-system, "Segoe UI", Roboto, sans-serif; font-size: 15px; line-height: 1.5;
  min-height: 100vh; position: relative; overflow-x: hidden;
}
/* лавандовые пятна как на лендинге */
body::before, body::after {
  content: ""; position: fixed; z-index: -1; background: var(--soft); opacity: .55; border-radius: 50%; filter: blur(2px);
}
body::before { width: 520px; height: 520px; right: -180px; top: 260px; }
body::after { width: 640px; height: 640px; left: -300px; bottom: -220px; }

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { margin: 0 0 .5em; line-height: 1.2; font-weight: 800; letter-spacing: -.01em; }
h1 { font-size: 30px; } h2 { font-size: 22px; } h3 { font-size: 17px; }
.muted { color: var(--muted); }
.accent { color: var(--accent); }
.small { font-size: 13px; }
.mt { margin-top: 20px; } .mt-s { margin-top: 10px; }

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 16px 60px; }

/* верхняя пилюля-навигация */
.nav {
  display: flex; align-items: center; gap: 20px; margin: 16px auto 24px; max-width: 1120px;
  background: var(--card); border-radius: 999px; padding: 10px 18px; box-shadow: var(--shadow); flex-wrap: wrap;
}
.logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 18px; color: var(--text); }
.logo b { color: var(--accent); }
.logo:hover { text-decoration: none; }
.nav-links { display: flex; gap: 4px; flex: 1; flex-wrap: wrap; }
.nav-links a { color: var(--text); padding: 8px 14px; border-radius: 999px; font-weight: 600; font-size: 14px; }
.nav-links a:hover { background: var(--input); text-decoration: none; }
.nav-links a.on { background: var(--primary); color: var(--primary-ink); }
.icon-btn {
  background: var(--input); border: 0; width: 38px; height: 38px; border-radius: 50%; cursor: pointer;
  display: grid; place-items: center; color: var(--text);
}
.icon-btn:hover { background: var(--soft); }
.nav-wrap { padding: 0 16px; }

/* карточки */
.card { background: var(--card); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); }
.card + .card, .grid + .card, .card + .grid { margin-top: 20px; }
.grid > .card + .card, .grid > .card { margin-top: 0; }
.card.tight { padding: 18px; }
.grid { display: grid; gap: 20px; }
.g2 { grid-template-columns: repeat(2, 1fr); }
.g3 { grid-template-columns: repeat(3, 1fr); }
.g-side { grid-template-columns: 2fr 1fr; align-items: start; }
@media (max-width: 860px) { .g2, .g3, .g-side { grid-template-columns: 1fr; } }
.row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.row.between { justify-content: space-between; }
.sp { flex: 1; }

/* hero */
.hero { background: var(--hero); color: #fff; border-radius: 28px; padding: 32px; position: relative; overflow: hidden; }
.hero h1 { color: #fff; max-width: 560px; }
.hero .hl { color: #FFA53A; }
.hero p { color: rgba(255,255,255,.82); max-width: 520px; margin: 0; }
.hero::after {
  content: ""; position: absolute; right: -60px; bottom: -80px; width: 280px; height: 280px; border-radius: 50%;
  background: linear-gradient(135deg, #FF8A00, #F26B00); opacity: .9;
}
.hero > * { position: relative; z-index: 1; }

/* большие цифры как в лендинге */
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; text-align: center; margin: 32px 0; }
.stat .num { font-size: 56px; font-weight: 800; color: var(--accent); line-height: 1; }
.stat .lbl { font-weight: 700; margin-top: 6px; }
.stat .sub { color: var(--muted); font-size: 13px; }
@media (max-width: 640px) { .stat .num { font-size: 40px; } .hero { padding: 24px; } }

/* кнопки */
.btn {
  display: inline-flex; align-items: center; gap: 8px; border: 0; cursor: pointer; font: inherit; font-weight: 700;
  padding: 11px 22px; border-radius: 999px; background: var(--cta); color: #fff; box-shadow: 0 6px 16px rgba(242,107,0,.28);
  transition: transform .12s, box-shadow .12s;
}
.btn:hover { transform: translateY(-1px); text-decoration: none; }
.btn.sec { background: var(--input); color: var(--text); box-shadow: none; }
.btn.blue { background: var(--primary-2); color: #fff; box-shadow: none; }
.btn.ghost { background: transparent; color: var(--primary); box-shadow: none; padding: 8px 12px; }
.btn.danger { background: transparent; color: var(--danger); box-shadow: none; padding: 8px 12px; }
.btn.sm { padding: 6px 14px; font-size: 13px; }
.btn[disabled] { opacity: .5; cursor: not-allowed; }

/* формы */
label { display: block; font-weight: 700; font-size: 13px; margin: 14px 0 6px; }
input[type=text], input[type=number], input[type=date], input[type=password], input[type=search], select, textarea {
  width: 100%; background: var(--input); border: 2px solid transparent; border-radius: 14px; padding: 11px 14px;
  font: inherit; color: var(--text); outline: 0;
}
input:focus, select:focus, textarea:focus { border-color: var(--primary-2); }
textarea { resize: vertical; min-height: 70px; }
textarea.big { min-height: 140px; }
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 20px; }
@media (max-width: 640px) { .form-grid { grid-template-columns: 1fr; } }
.hint { color: var(--muted); font-size: 12px; margin-top: 4px; }

/* бейджи и теги */
.badge { display: inline-block; padding: 3px 11px; border-radius: 999px; font-size: 12px; font-weight: 700; background: var(--soft); color: var(--primary); }
.badge.targeted { background: #FFE3CC; color: #B85300; }
.badge.check { background: #FFF2C7; color: #8A6300; }
.badge.observe { background: var(--soft); color: var(--primary); }
.badge.slip, .badge.resolved { background: #D9F4E6; color: #0F6E43; }
.badge.library { background: #D9F4E6; color: #0F6E43; }
.badge.adapted { background: #FFF2C7; color: #8A6300; }
.badge.new { background: #FFE3CC; color: #B85300; }
:root[data-theme="dark"] .badge.targeted { background: #4A2A0F; color: #FFB57A; }
:root[data-theme="dark"] .badge.check { background: #463A10; color: #FFD97A; }
:root[data-theme="dark"] .badge.slip, :root[data-theme="dark"] .badge.resolved,
:root[data-theme="dark"] .badge.library { background: #12382A; color: #6FE0AB; }
:root[data-theme="dark"] .badge.adapted { background: #463A10; color: #FFD97A; }
:root[data-theme="dark"] .badge.new { background: #4A2A0F; color: #FFB57A; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .badge.targeted { background: #4A2A0F; color: #FFB57A; }
  :root:not([data-theme="light"]) .badge.check { background: #463A10; color: #FFD97A; }
  :root:not([data-theme="light"]) .badge.slip, :root:not([data-theme="light"]) .badge.resolved,
  :root:not([data-theme="light"]) .badge.library { background: #12382A; color: #6FE0AB; }
  :root:not([data-theme="light"]) .badge.adapted { background: #463A10; color: #FFD97A; }
  :root:not([data-theme="light"]) .badge.new { background: #4A2A0F; color: #FFB57A; }
}

/* списки-карточки учеников */
.student-card { display: block; color: var(--text); }
.student-card:hover { text-decoration: none; transform: translateY(-2px); }
.student-card { transition: transform .12s; }
.avatar {
  width: 46px; height: 46px; border-radius: 50%; background: var(--cta); color: #fff; font-weight: 800;
  display: grid; place-items: center; font-size: 18px; flex: none;
}
.type-chip {
  display: inline-grid; place-items: center; width: 28px; height: 28px; border-radius: 9px; background: var(--primary-2);
  color: #fff; font-weight: 800; font-size: 14px;
}

/* нумерованные блоки 01/02/03 */
.step { position: relative; overflow: hidden; }
.step .bignum { position: absolute; right: 18px; top: 4px; font-size: 56px; font-weight: 800; color: var(--soft-ink); line-height: 1; pointer-events: none; }
.step > *:not(.bignum) { position: relative; }

/* таблицы */
table { width: 100%; border-collapse: collapse; }
th { text-align: left; font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; padding: 8px 10px; }
td { padding: 10px; border-top: 1px solid var(--line); vertical-align: top; }
.table-wrap { overflow-x: auto; }

/* flash */
.flash { padding: 12px 18px; border-radius: 16px; margin-bottom: 16px; font-weight: 600; }
.flash.error { background: #FFE3E3; color: #A01F1F; }
.flash.ok { background: #D9F4E6; color: #0F6E43; }

/* план урока */
.stage { border-left: 4px solid var(--accent); padding-left: 16px; margin-top: 22px; }
.exercise { background: var(--input); border-radius: 18px; padding: 16px; margin-top: 12px; }
.exercise textarea, .exercise input[type=text] { background: var(--card); }
.pre { white-space: pre-wrap; background: var(--input); border-radius: 14px; padding: 14px; font-size: 14px; }
.tools { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 8px; }
.meter { height: 10px; border-radius: 99px; background: var(--input); overflow: hidden; }
.meter > i { display: block; height: 100%; background: var(--cta); border-radius: 99px; }
.meter.over > i { background: var(--danger); }

/* overlay загрузки */
#loading {
  position: fixed; inset: 0; background: rgba(11,18,48,.6); display: none; place-items: center; z-index: 50; color: #fff;
  font-weight: 700; text-align: center;
}
#loading.on { display: grid; }
.spinner { width: 46px; height: 46px; border: 5px solid rgba(255,255,255,.3); border-top-color: var(--accent); border-radius: 50%; animation: spin 1s linear infinite; margin: 0 auto 14px; }
@keyframes spin { to { transform: rotate(360deg); } }

.empty { text-align: center; color: var(--muted); padding: 30px 10px; }
details > summary { cursor: pointer; font-weight: 700; }
.range-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px 16px; }
@media (max-width: 640px) { .range-row { grid-template-columns: repeat(2, 1fr); } }
.login-card { max-width: 380px; margin: 12vh auto; }

/* подсказки «?» */
.help-btn {
  display: inline-grid; place-items: center; width: 18px; height: 18px; padding: 0; margin: 0 0 0 6px; border-radius: 50%;
  border: 0; background: var(--soft); color: var(--primary); font: 800 11px/1 "Manrope", sans-serif; cursor: pointer;
  vertical-align: middle; flex: none; text-transform: none; letter-spacing: 0;
}
.help-btn:hover, .help-btn[aria-expanded="true"] { background: var(--primary-2); color: #fff; }
.help-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.help-pop {
  position: fixed; z-index: 60; background: var(--text); color: var(--bg); padding: 12px 14px; border-radius: 14px;
  font-size: 13px; font-weight: 500; line-height: 1.45; box-shadow: 0 10px 30px rgba(0,0,0,.3); text-transform: none;
  letter-spacing: 0; white-space: pre-line;
}
.help-pop[hidden] { display: none; }