/* ============================================================
   ЭКРАН ВХОДА
   Обложка зачётной книжки и поле ввода номера.
   ============================================================ */
/* ---------------------------------------------------------------
   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 color-mix(in srgb, var(--stamp) 20%, transparent);
}
.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);
}

/* --- мобильный экран --- */
@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;
  }
}