/* ============================================================
   登入畫面(原始尺寸,小字最低 13px)
   ============================================================ */

.hd-login {
  position: relative;
  z-index: 1;
  width: 100%; height: 100%;
  display: flex; align-items: center; justify-content: center;
}

.hd-login__card {
  width: 520px;
  background: var(--hd-card);
  border: 1px solid var(--hd-line);
  border-radius: var(--hd-radius-xl);
  padding: 44px 52px 40px;
  box-shadow: var(--hd-shadow-lg);
  display: flex; flex-direction: column; gap: 22px;
}

.hd-login__brand {
  display: flex; align-items: center; gap: 14px;
}
.hd-login__logo {
  width: 56px; height: 56px;
  border-radius: 14px;
  background: var(--hd-ink);
  color: var(--hd-paper);
  display: grid; place-items: center;
  font-family: var(--hd-font-display);
  font-weight: 700;
  font-size: 28px;
  position: relative;
}
.hd-login__logo::after {
  content: "";
  position: absolute; inset: 4px;
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 10px;
}
.hd-login__brand-text { display: flex; flex-direction: column; }
.hd-login__title {
  font-family: var(--hd-font-display);
  font-weight: 700;
  font-size: 30px;
  color: var(--hd-ink);
  margin: 0;
  line-height: 1.1;
  letter-spacing: .01em;
}
.hd-login__kicker {
  font-size: 13px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--hd-ink-muted);
  margin-top: 4px;
}

.hd-login__subtitle {
  font-size: 16px;
  color: var(--hd-ink-soft);
  line-height: 1.55;
  margin: 0;
}

.hd-login__fields {
  display: flex; flex-direction: column;
  gap: 14px;
  margin-top: 4px;
}
.hd-login__field { display: flex; flex-direction: column; gap: 6px; }
.hd-login__label {
  font-size: 13px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--hd-ink-muted);
  font-weight: 700;
}
.hd-login__input {
  padding: 14px 18px;
  border: 1px solid var(--hd-line);
  border-radius: var(--hd-radius);
  background: var(--hd-card-soft);
  color: var(--hd-ink);
  font-family: inherit;
  font-size: 18px;
  outline: none;
  transition: border-color .15s, background .15s;
}
.hd-login__input:focus {
  border-color: var(--hd-ink-soft);
  background: var(--hd-card);
}
.hd-login__input--code {
  font-family: var(--hd-font-mono);
  letter-spacing: .12em;
  text-transform: uppercase;
}

.hd-login__submit {
  margin-top: 8px;
  background: var(--hd-ink);
  color: var(--hd-paper);
  border: 0;
  border-radius: var(--hd-radius);
  padding: 16px 20px;
  font-family: var(--hd-font-display);
  font-weight: 700;
  font-size: 22px;
  letter-spacing: .04em;
  cursor: pointer;
  transition: background .15s, transform .15s;
}
.hd-login__submit:hover  { background: #16120c; transform: translateY(-1px); }
.hd-login__submit:disabled {
  opacity: .35; cursor: not-allowed; transform: none;
}
.hd-login__submit.is-loading {
  cursor: wait;
  opacity: .65;
}

/* 錯誤訊息 */
.hd-login__error {
  display: none;
  padding: 11px 14px;
  background: rgba(181, 60, 46, .08);
  border: 1px solid var(--hd-danger);
  border-radius: var(--hd-radius);
  color: var(--hd-danger);
  font-size: 14px;
  line-height: 1.5;
}
.hd-login__error.is-visible { display: block; }

.hd-login__hint {
  font-size: 13px;
  color: var(--hd-ink-muted);
  text-align: center;
  margin: 0;
}