@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root{
  --bg1:#f6f8fb;
  --bg2:#eef3f9;
  --card:#ffffff;

  --text:#0f172a;
  --muted:#64748b;

  --line: rgba(15, 23, 42, 0.12);
  --soft: rgba(15, 23, 42, 0.06);

  --accent:#1f4e79;      /* спокойный "гос" синий */
  --accent2:#2b6cb0;     /* светлее */
  --focus: rgba(31, 78, 121, 0.16);

  --danger:#b42318;

  --radius: 20px;
  --radius-sm: 14px;

  --shadow: 0 18px 40px rgba(15, 23, 42, 0.10);
  --shadow-sm: 0 10px 22px rgba(15, 23, 42, 0.08);
}

*{
  margin:0;
  padding:0;
  box-sizing:border-box;
}

body{
  font-family: "Inter", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color:var(--text);
  background:#fff;
}

/* фон */
.bg-img{
  min-height:100vh;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:24px 12px;

  background:
    radial-gradient(1200px 500px at 20% -10%, rgba(31,78,121,0.12), transparent 60%),
    radial-gradient(900px 420px at 95% 10%, rgba(43,108,176,0.12), transparent 60%),
    linear-gradient(180deg, var(--bg1), var(--bg2));
}

/* контейнер карточки */
.auth-shell{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:center;
}

.auth-card{
  width: 440px;
  max-width: 92vw;

  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);

  padding: 22px 22px 18px;
}

/* бренд */
.brand{
  display:flex;
  align-items:center;
  gap:14px;
  padding-bottom:16px;
  border-bottom:1px solid var(--soft);
  margin-bottom:16px;
}

.brand__logo{
  width:54px;
  height:54px;
  border-radius: 16px;
  background: rgba(31,78,121,0.08);
  border: 1px solid rgba(31,78,121,0.16);
  display:flex;
  align-items:center;
  justify-content:center;
  overflow:hidden;
}

.brand__logo img{
  width:40px;
  height:auto;
  display:block;
}

.brand__text{
  min-width:0;
}

.brand__title{
  font-weight:800;
  letter-spacing:-0.2px;
  font-size:14px;
  line-height:1.1rem;
}

.brand__subtitle{
  margin-top:2px;
  font-weight:700;
  font-size:13px;
  color:var(--muted);
}

.brand__link{
  display:inline-block;
  margin-top:8px;
  font-size:12px;
  font-weight:700;
  color: rgba(31,78,121,0.95);
  text-decoration:none;
}

.brand__link:hover{
  text-decoration: underline;
}

/* заголовок */
.auth-head{
  text-align:left;
  margin-bottom:14px;
}

.auth-title{
  margin:0;
  font-size:22px;
  font-weight:900;
  letter-spacing:-0.3px;
}

.auth-desc{
  margin-top:6px;
  font-size:13px;
  color:var(--muted);
  line-height:1.2rem;
}

/* alert */
.auth-alert{
  border-radius: 14px;
  border: 1px solid rgba(180, 35, 24, 0.22);
  background: rgba(180, 35, 24, 0.06);
  color: #7a1a12;
  font-weight:600;
}

/* поля */
.auth-form{
  margin-top: 10px;
}

.field{
  position: relative;
  height: 46px;
  width: 100%;
  display:flex;
  align-items:center;

  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #fff;

  box-shadow: 0 1px 0 rgba(15, 23, 42, 0.03);
  transition: box-shadow .15s ease, border-color .15s ease, transform .15s ease;
}

.field:hover{
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.field:focus-within{
  border-color: rgba(31,78,121,0.40);
  box-shadow: 0 0 0 4px var(--focus);
  transform: translateY(0);
}

.space{
  margin-top: 12px;
}

.field__icon{
  width: 48px;
  height: 100%;
  display:flex;
  align-items:center;
  justify-content:center;

  color: rgba(31,78,121,0.88);
  background: rgba(31,78,121,0.06);
  border-right: 1px solid var(--soft);
  border-top-left-radius: var(--radius-sm);
  border-bottom-left-radius: var(--radius-sm);
}

.field input{
  height: 100%;
  width: 100%;
  border: none;
  outline: none;

  padding: 0 12px;
  font-size: 15px;
  color: var(--text);
  background: transparent;
}

.field input::placeholder{
  color: rgba(100,116,139,0.85);
  font-weight:600;
}

/* показать/скрыть */
.show{
  position:absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);

  font-size: 12px;
  font-weight: 800;
  padding: 6px 10px;
  border-radius: 999px;

  cursor:pointer;
  user-select:none;

  color: rgba(31,78,121,0.95);
  background: rgba(31,78,121,0.08);
  border: 1px solid rgba(31,78,121,0.16);
}

.show:hover{
  background: rgba(31,78,121,0.12);
}

/* кнопка входа */
.submit-wrap{
  margin-top: 14px;
  height:auto;
  border:none;
  background:transparent;
  box-shadow:none;
  transform:none;
}

.submit-wrap:hover{
  box-shadow:none;
  transform:none;
}

.field input[type="submit"]{
  height: 46px;
  border-radius: 14px;

  background: linear-gradient(180deg, var(--accent2), var(--accent));
  border: 1px solid rgba(31,78,121,0.35);
  color: #ffffff;

  font-size: 15px;
  font-weight: 900;
  letter-spacing: 0.4px;

  cursor:pointer;
  transition: transform .12s ease, filter .12s ease, box-shadow .12s ease;
  box-shadow: 0 14px 28px rgba(31,78,121,0.18);
}

.field input[type="submit"]:hover{
  filter: brightness(1.03);
  transform: translateY(-1px);
}

.field input[type="submit"]:active{
  transform: translateY(0px);
  filter: brightness(0.98);
}

/* подвал */
.auth-footnote{
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--soft);

  color: var(--muted);
  font-size: 12px;
  line-height: 1.1rem;

  display:flex;
  flex-wrap:wrap;
  gap:8px;
}

.auth-footnote .dot{
  opacity: 0.55;
}

/* адаптив */
@media (max-width: 420px){
  .auth-card{
    padding: 18px 16px 14px;
  }
  .brand__title{
    font-size: 13px;
  }
  .auth-title{
    font-size: 20px;
  }
}