*{
  box-sizing:border-box;
  margin:0;
  padding:0;
  font-family:"Tahoma","Segoe UI",sans-serif;
}

:root{
  --bg1:#eef4fb;
  --bg2:#dfe9f7;
  --card:#ffffff;
  --card2:#f3f7fd;
  --line:#d7e2f0;
  --blue:#1455a0;
  --blue2:#2d7fe0;
  --soft:#6f8fb7;
  --shadow:0 14px 35px rgba(82,116,166,.14);
  --shadow-soft:0 8px 18px rgba(82,116,166,.10);
}

body{
  min-height:100vh;
  background:
    radial-gradient(circle at top right, rgba(45,127,224,.10), transparent 22%),
    radial-gradient(circle at bottom left, rgba(91,155,233,.12), transparent 20%),
    linear-gradient(135deg, var(--bg1), var(--bg2));
  padding:24px;
  color:var(--blue);
  display:flex;
  align-items:center;
  justify-content:center;
}

.login-shell{
  width:100%;
  max-width:1200px;
  background:linear-gradient(180deg, rgba(255,255,255,.72), rgba(243,247,253,.86));
  border:1px solid rgba(255,255,255,.95);
  border-radius:38px;
  box-shadow:0 24px 50px rgba(82,116,166,.16), inset 0 0 0 1px rgba(255,255,255,.6);
  padding:34px;
  backdrop-filter:blur(10px);
}

.login-layout{
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:28px;
  align-items:center;
}

.login-brand{
  padding:18px 10px;
}

.brand-top{
  display:flex;
  align-items:center;
  gap:18px;
  margin-bottom:28px;
}

.brand-icon{
  width:104px;
  height:104px;
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  color:#fff;
  background:linear-gradient(180deg, #58a6f3, #2d7fe0);
  border:1px solid rgba(255,255,255,.45);
  box-shadow:var(--shadow);
  flex-shrink:0;
}

.brand-icon svg{
  width:56px;
  height:56px;
  fill:currentColor;
}

.brand-text h1{
  font-size:40px;
  font-weight:900;
  margin-bottom:8px;
  line-height:1.3;
}

.brand-text p{
  font-size:20px;
  color:var(--soft);
}

.login-welcome{
  margin-top:18px;
}

.login-welcome h2{
  font-size:58px;
  line-height:1.05;
  font-weight:900;
  margin-bottom:12px;
}

.login-welcome p{
  font-size:20px;
  color:var(--soft);
  line-height:1.8;
}

.login-card{
  background:linear-gradient(180deg, var(--card), var(--card2));
  border:1px solid #d5dfed;
  border-radius:30px;
  padding:30px 28px;
  box-shadow:var(--shadow);
}

.login-card h3{
  font-size:30px;
  font-weight:900;
  margin-bottom:22px;
  text-align:center;
}

.form-group{
  margin-bottom:18px;
}

.form-group label{
  display:block;
  margin-bottom:8px;
  font-size:16px;
  font-weight:800;
  color:var(--blue);
}

.form-control{
  width:100%;
  height:58px;
  border-radius:18px;
  border:1px solid var(--line);
  background:linear-gradient(180deg, #fdfefe, #f1f6fc);
  padding:0 16px;
  font-size:17px;
  color:var(--blue);
  outline:none;
  box-shadow:inset 0 2px 6px rgba(255,255,255,.6);
  transition:.2s ease;
}

.form-control:focus{
  border-color:#9fc3ee;
  box-shadow:0 0 0 4px rgba(45,127,224,.10);
}

.login-btn{
  width:100%;
  height:58px;
  border:none;
  border-radius:18px;
  background:linear-gradient(180deg, #58a6f3, #2d7fe0);
  color:#fff;
  font-size:19px;
  font-weight:900;
  cursor:pointer;
  box-shadow:var(--shadow-soft);
  transition:.2s ease;
}

.login-btn:hover{
  transform:translateY(-2px);
  box-shadow:0 12px 26px rgba(45,127,224,.20);
}

.login-alert{
  margin-bottom:16px;
  padding:14px 16px;
  border-radius:16px;
  background:#fee2e2;
  color:#991b1b;
  border:1px solid #fecaca;
  font-size:15px;
  font-weight:700;
}

.login-footer{
  margin-top:22px;
  text-align:center;
  color:var(--soft);
  font-size:15px;
  line-height:1.8;
}

.login-footer strong{
  color:var(--blue);
}

@media (max-width:980px){
  .login-layout{
    grid-template-columns:1fr;
  }

  .login-welcome h2{
    font-size:42px;
  }
}

@media (max-width:700px){
  body{
    padding:12px;
  }

  .login-shell{
    padding:18px;
    border-radius:24px;
  }

  .brand-top{
    align-items:flex-start;
  }

  .brand-icon{
    width:80px;
    height:80px;
  }

  .brand-text h1{
    font-size:28px;
  }

  .brand-text p{
    font-size:16px;
  }

  .login-welcome h2{
    font-size:34px;
  }

  .login-welcome p{
    font-size:17px;
  }

  .login-card{
    padding:22px 16px;
    border-radius:22px;
  }

  .login-card h3{
    font-size:24px;
  }

  .form-control,
  .login-btn{
    height:52px;
    font-size:16px;
  }
}