/* ============================================================
   ВГУИТ · Рейтинг успеваемости
   Идентичность: официальный документ (зачётная книжка) —
   тёплая «бумага», ультрамариновая печать-подпись, точные
   измерительные таблицы. Дисплей — Unbounded (со сдержанностью),
   текст — Golos Text, данные — JetBrains Mono.
   ============================================================ */

:root {
  --paper:    #E9EAE3;  /* прохладная «бумага» фона */
  --paper-2:  #F5F5EF;  /* карточки/таблицы */
  --paper-3:  #FCFCF8;  /* зебра, верх таблицы */
  --ink:      #181A17;  /* основной текст-чернила */
  --ink-soft: #5E6157;  /* подписи, второстепенное */
  --line:     #D4D5CB;  /* линовка */
  --line-2:   #BFC1B5;  /* акцентная линовка */
  --stamp:    #2E2BD6;  /* ультрамарин — подпись/печать/акцент */
  --stamp-ink:#211FA8;  /* нажатие/hover акцента */

  --good: #2E7D4F;  /* Отл / Зачтено */
  --ok:   #5C7A2E;  /* Хор */
  --mid:  #B0731A;  /* Удовл */
  --bad:  #C03A2D;  /* Неуд / Не зачтено */

  --font-display: 'Unbounded', system-ui, sans-serif;
  --font-body: 'Golos Text', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  --r-sm: 4px;
  --r-md: 8px;
  --r-lg: 14px;

  --shadow: 0 1px 0 rgba(24,26,23,.04), 0 18px 40px -28px rgba(24,26,23,.45);
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

button { font-family: inherit; }

::selection { background: var(--stamp); color: #fff; }

:focus-visible {
  outline: 2.5px solid var(--stamp);
  outline-offset: 2px;
  border-radius: 2px;
}

[hidden] { display: none !important; }

/* ---------------------------------------------------------------
   Кнопки
   --------------------------------------------------------------- */
.btn {
  appearance: none;
  border: none;
  background: var(--ink);
  color: var(--paper-3);
  font-weight: 600;
  font-size: .95rem;
  letter-spacing: .01em;
  padding: 0 1.4rem;
  height: 52px;
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: background .18s ease, transform .12s ease, box-shadow .18s ease;
  white-space: nowrap;
  -webkit-tap-highlight-color: transparent;
}
.btn:hover { background: var(--stamp); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .55; cursor: progress; }

.btn--ghost {
  background: transparent;
  color: var(--ink);
  border: 1.5px solid var(--line-2);
  height: 40px;
  padding: 0 1rem;
  font-size: .85rem;
}
.btn--ghost:hover,
.btn--ghost:active { background: transparent; border-color: var(--stamp); color: var(--stamp); }

.btn--icon {
  width: 40px;
  height: 40px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--r-sm);
  flex-shrink: 0;
}
.icon-logout {
  width: 20px;
  height: 20px;
}

.linklike {
  border: none;
  background: none;
  padding: 0;
  font: inherit;
  color: var(--stamp);
  font-family: var(--font-mono);
  font-weight: 700;
  cursor: pointer;
  border-bottom: 1.5px dashed var(--stamp);
}
.linklike:hover { color: var(--stamp-ink); }

/* ---------------------------------------------------------------
   ВХОД — обложка зачётки
   --------------------------------------------------------------- */
.view--login {
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: var(--paper);
}

.cover {
  position: relative;
  width: 100%;
  max-width: 560px;
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: clamp(2rem, 5vw, 3.5rem);
  box-shadow: var(--shadow);
  /* печатная рамка обложки */
  outline: 1px solid var(--line);
  outline-offset: -10px;
  overflow: visible;
  animation: rise .6s cubic-bezier(.2,.7,.2,1) both;
}

.cover__seal {
  position: absolute;
  top: -34px;
  right: -22px;
  width: clamp(116px, 26vw, 158px);
  height: clamp(116px, 26vw, 158px);
  color: var(--stamp);
  opacity: .92;
  transform: rotate(-9deg);
  filter: drop-shadow(0 1px 0 rgba(46,43,214,.15));
  pointer-events: none;
}
.seal-text { font-family: var(--font-mono); font-weight: 500; fill: var(--stamp); }
.seal-text--top { font-size: 13.5px; letter-spacing: 1.5px; }
.seal-text--bottom { font-size: 11px; letter-spacing: 2.5px; }

.cover__eyebrow {
  margin: 0 0 1.6rem;
  max-width: 60%;
  font-size: .74rem;
  line-height: 1.4;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--ink-soft);
  font-weight: 500;
}

.cover__title {
  margin: 0 0 .6rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 6.5vw, 3.1rem);
  line-height: .92;
  letter-spacing: -.02em;
}

.cover__sub {
  margin: 0 0 2.2rem;
  color: var(--ink-soft);
  font-size: 1.02rem;
  max-width: 34ch;
}

/* поле ввода номера */
.field { margin: 0; }
.field__label {
  display: block;
  font-size: .78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--ink-soft);
  margin-bottom: .55rem;
}
.field__row {
  display: flex;
  align-items: stretch;
  gap: 12px;
}
.field__hash {
  display: none;
}
.field__input {
  flex: 1;
  min-width: 0;
  border: 1.5px solid var(--line-2);
  background: var(--paper-3);
  border-radius: var(--r-md);
  padding: 10px 18px;
  outline: none;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.4rem;
  letter-spacing: .08em;
  color: var(--ink);
  transition: border-color .18s ease, box-shadow .18s ease;
}
.field__input:focus {
  border-color: var(--stamp);
  box-shadow: 0 0 0 4px rgba(46,43,214,.12);
}
.field__input::placeholder { color: var(--line-2); letter-spacing: .08em; }

.field__error {
  margin: .85rem 0 0;
  color: var(--bad);
  font-size: .9rem;
  font-weight: 500;
  display: flex;
  gap: .5rem;
  align-items: baseline;
}
.field__error::before { content: "▲"; font-size: .7em; }

.cover__hint {
  margin: 1.6rem 0 0;
  font-size: .88rem;
  color: var(--ink-soft);
}

/* ---------------------------------------------------------------
   РЕЙТИНГ — верхняя панель
   --------------------------------------------------------------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 14px clamp(16px, 4vw, 40px);
  background: color-mix(in srgb, var(--paper) 86%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.topbar__brand { display: flex; align-items: center; gap: .7rem; }
.brand__seal { width: 30px; height: 30px; color: var(--stamp); flex: none; }
.brand__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -.01em;
  display: flex;
  align-items: baseline;
  gap: .4rem;
}
.brand__sep { color: inherit; }
.brand__sub { color: inherit; font-weight: inherit; font-size: inherit; }

.topbar__id {
  margin-left: auto;
  text-align: right;
  line-height: 1.1;
}
.topbar__id-label {
  display: block;
  font-size: .64rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--ink-soft);
}
.topbar__id-num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.05rem;
}

/* ---------------------------------------------------------------
   Контент и секции
   --------------------------------------------------------------- */
.content {
  max-width: 1120px;
  margin: 0 auto;
  padding: clamp(28px, 5vw, 56px) clamp(16px, 4vw, 40px) 96px;
}

.section { margin-top: 56px; animation: rise .5s cubic-bezier(.2,.7,.2,1) both; }
.section:first-child { margin-top: 8px; }

.section__head {
  display: flex;
  align-items: baseline;
  gap: .9rem;
  padding-bottom: .8rem;
  margin-bottom: 1.1rem;
  border-bottom: 2px solid var(--ink);
}
.section__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.35rem, 3.4vw, 1.85rem);
  letter-spacing: -.015em;
}
.section__count { font-size: .9rem; color: var(--ink-soft); font-weight: 500; }
.section__tag {
  margin-left: auto;
  align-self: center;
  font-size: .68rem;
  text-transform: uppercase;
  letter-spacing: .07em;
  font-weight: 600;
  color: var(--stamp);
  border: 1.5px solid currentColor;
  border-radius: 999px;
  padding: .2rem .7rem;
}
.section__tag--grade { color: var(--ink-soft); }

/* обёртка для горизонтального скролла широких таблиц */
.table-scroll,
.rt-scroll {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--paper-2);
  box-shadow: var(--shadow);
  -webkit-overflow-scrolling: touch;
}

table { border-collapse: separate; border-spacing: 0; width: 100%; }

/* ---------- Рейтинговая таблица (КТ) ---------- */
.rt { font-variant-numeric: tabular-nums; min-width: 640px; }
.rt th, .rt td {
  border-bottom: 1px solid var(--line);
  border-right: 1px solid var(--line);
  padding: .7rem .55rem;
  text-align: center;
}
.rt th:first-child, .rt td:first-child { border-left: none; }
.rt tr > :last-child { border-right: none; }

.rt thead th {
  background: var(--paper-3);
  font-weight: 600;
  font-size: .76rem;
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: .03em;
}
.rt thead .kt-group {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: .82rem;
  color: var(--ink);
  letter-spacing: .04em;
  background: color-mix(in srgb, var(--stamp) 7%, var(--paper-3));
  border-bottom: 1px solid var(--line-2);
}
.kt-group__w {
  display: block;
  margin-top: 2px;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: .62rem;
  letter-spacing: .02em;
  text-transform: none;
  color: var(--stamp-ink);
}
.rt thead .kt-result,
.rt thead .rt-final {
  vertical-align: middle;
  color: var(--ink);
}
.rt thead .rt-final { background: color-mix(in srgb, var(--stamp) 12%, var(--paper-3)); color: var(--stamp-ink); }

.rt .rt-subject {
  text-align: left;
  font-weight: 500;
  background: var(--paper-2);
  min-width: 150px;
  /* при горизонтальном скролле широких КТ-таблиц держим название предмета на виду */
  position: sticky;
  left: 0;
  z-index: 2;
  box-shadow: 1px 0 0 var(--line-2);
}
.rt thead .rt-subject { z-index: 3; }
.rt tbody tr:nth-child(even) td { background: color-mix(in srgb, var(--paper-3) 60%, transparent); }
.rt tbody tr:nth-child(even) .rt-subject { background: color-mix(in srgb, var(--paper-3) 60%, var(--paper-2)); }
.rt tbody tr:hover td { background: color-mix(in srgb, var(--stamp) 5%, var(--paper-3)); }

.rt-cell { display: inline-flex; flex-direction: column; align-items: center; line-height: 1.05; }
.rt-cell__v { font-family: var(--font-mono); font-weight: 500; font-size: .98rem; }
.rt-cell__w { font-size: .62rem; color: var(--ink-soft); margin-top: 2px; letter-spacing: .02em; }
.rt-cell.is-empty .rt-cell__v { color: var(--line-2); }

.rt-total { font-family: var(--font-mono); font-weight: 700; background: color-mix(in srgb, var(--stamp) 4%, transparent); }
.rt-rating {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--stamp-ink);
  background: color-mix(in srgb, var(--stamp) 9%, transparent) !important;
}

.rt-caption {
  margin: .7rem 2px 0;
  font-size: .78rem;
  color: var(--ink-soft);
}

/* ---------- Оценочная таблица ---------- */
.gt { min-width: 380px; }
.gt th, .gt td { padding: .85rem 1.1rem; border-bottom: 1px solid var(--line); text-align: left; }
.gt thead th {
  background: var(--paper-3);
  font-weight: 600;
  font-size: .76rem;
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: .04em;
}
.gt thead th:last-child, .gt td:last-child { text-align: right; width: 1%; white-space: nowrap; }
.gt tbody tr:last-child td { border-bottom: none; }
.gt tbody tr:nth-child(even) td { background: color-mix(in srgb, var(--paper-3) 55%, transparent); }
.gt tbody tr:hover td { background: color-mix(in srgb, var(--stamp) 5%, var(--paper-3)); }
.gt-subject { font-weight: 500; }

.chip {
  display: inline-block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: .82rem;
  letter-spacing: .02em;
  padding: .32rem .8rem;
  border-radius: 999px;
  border: 1.5px solid currentColor;
}
.chip.is-good { color: var(--good); background: color-mix(in srgb, var(--good) 10%, transparent); }
.chip.is-ok   { color: var(--ok);   background: color-mix(in srgb, var(--ok) 10%, transparent); }
.chip.is-mid  { color: var(--mid);  background: color-mix(in srgb, var(--mid) 12%, transparent); }
.chip.is-bad  { color: var(--bad);  background: color-mix(in srgb, var(--bad) 10%, transparent); }
.chip.is-none { color: var(--line-2); background: transparent; }

/* ---------------------------------------------------------------
   Состояния: загрузка, пусто, ошибка, баннер
   --------------------------------------------------------------- */
.state {
  display: grid;
  place-items: center;
  text-align: center;
  padding: clamp(56px, 16vh, 140px) 16px;
  gap: 1rem;
}
.state__seal { width: 64px; height: 64px; color: var(--stamp); }
.loading .state__seal { animation: spin 1.4s linear infinite; }
.state__title { font-family: var(--font-display); font-weight: 700; font-size: 1.3rem; margin: 0; }
.state__text { margin: 0; color: var(--ink-soft); max-width: 42ch; }

.banner {
  display: flex;
  align-items: center;
  gap: .9rem;
  flex-wrap: wrap;
  margin-bottom: 28px;
  padding: .85rem 1.1rem;
  background: color-mix(in srgb, var(--mid) 9%, var(--paper-2));
  border: 1px solid color-mix(in srgb, var(--mid) 40%, var(--line));
  border-radius: var(--r-md);
  font-size: .9rem;
}
.banner__retry { margin-left: auto; }

/* ---------------------------------------------------------------
   Анимации
   --------------------------------------------------------------- */
@keyframes rise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
@keyframes stamp-in { 0% { opacity: 0; transform: rotate(-26deg) scale(1.4); } 100% { opacity: .92; transform: rotate(-9deg) scale(1); } }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }

.view--rating:not([hidden]) { animation: fade .35s ease both; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* ---------------------------------------------------------------
   Адаптив
   --------------------------------------------------------------- */
@media (max-width: 560px) {
  .cover { padding: 1.8rem 1.25rem; }
  .cover__title { font-size: clamp(1.7rem, 8vw, 2.5rem); }
  .cover__eyebrow { max-width: 78%; }
  .cover__seal { top: -26px; right: -10px; }

  .field__row {
    flex-wrap: wrap;
    gap: 12px;
  }

  .field__input {
    width: 100%;
    flex: none;
    font-size: 1.2rem;
    padding: 12px 16px;
  }

  #login-btn {
    width: 100%;
    flex: none;
    height: 48px;
  }

  .topbar__id-label {
    display: block;
    font-size: 0.52rem;
    letter-spacing: 0.02em;
    line-height: 1.1;
  }

  /* Оптимизация верхней панели для мобильных */
  .topbar {
    padding: 10px 10px;
    gap: 0.35rem;
  }
  .brand__name {
    font-size: 0.95rem;
  }
  .brand__seal {
    width: 24px;
    height: 24px;
  }
  .topbar__id-num {
    font-size: 0.9rem;
  }
  .topbar__brand {
    gap: 0.4rem;
  }
  #logout-btn {
    width: 36px;
    height: 36px;
    padding: 0;
  }

  /* Оптимизация таблиц для мобильных устройств */
  .rt {
    table-layout: fixed;
    min-width: 460px;
    width: 100%;
  }
  .rt .rt-subject {
    width: 150px;
    min-width: 150px;
    max-width: 150px;
    font-size: 0.78rem;
    line-height: 1.25;
    padding: .5rem .35rem;
    white-space: normal;
    word-break: break-word;
    overflow-wrap: break-word;
  }
  .rt .kt-result {
    width: 58px;
  }
  .rt .rt-final {
    width: 70px;
  }
  .rt th, .rt td {
    padding: .5rem .3rem;
    font-size: 0.78rem;
  }
  .rt-rating {
    font-size: 1rem;
  }
  .rt-caption {
    font-size: 0.72rem;
    margin: .5rem 4px 0;
  }

  .gt {
    min-width: 100%;
  }
  .gt th, .gt td {
    padding: .6rem .5rem;
    font-size: 0.82rem;
  }
}

@media (max-width: 350px) {
  .brand__name-sub { display: none; }
}