:root{
  /* theme */
  --blue1:#004e92;
  --blue2:#000428;
  --accent:#00d4ff;

  /* surfaces */
  --light:#f7f9fc;         /* left panel background */
  --glass:rgba(255,255,255,0.10);
  --stroke:rgba(255,255,255,0.18);

  /* text */
  --text-light:#0d1b2a;    /* dark text on light panel */
  --text-muted:#5a6b85;
  --text-on-dark:#eaf2ff;
}

*{ box-sizing:border-box; }
html,body{ height:100%; }
body.auth-body{
  margin:0;
  font-family: "Poppins", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color:var(--text-on-dark);
  background:
    radial-gradient(1100px 800px at 80% 10%, rgba(20, 184, 255, .10), transparent 60%),
    radial-gradient(900px 700px at 20% 90%, rgba(0, 212, 255, .08), transparent 55%),
    linear-gradient(135deg, var(--blue1), var(--blue2));
}

/* Split shell */
.auth-shell{
  display:grid;
  grid-template-columns: 1.05fr 1fr;  /* slightly larger brand pane */
  min-height:100dvh;
}

/* Left: branding */
.brand-panel{
  background: var(--light);
  display:flex;
  align-items:center;
  justify-content:center;
  padding: clamp(32px, 5vw, 56px);
}
.brand-inner{
  max-width: 520px;
  width: 92%;
  color: var(--text-light);
}
.brand-logo{
  display:flex; align-items:center; justify-content:flex-start;
  margin-bottom: 18px;
}
.brand-logo img{
  height: 54px; width:auto; display:block;
}
.brand-welcome{
  margin: 8px 0 6px;
  font-size: clamp(28px, 4vw, 36px);
  font-weight: 800;
  letter-spacing: .2px;
  color: #111827;
}
.brand-tagline{
  margin: 0 0 14px;
  font-size: clamp(14px, 2.2vw, 16px);
  color: var(--text-muted);
  font-weight:600;
}
.brand-desc{
  margin: 0;
  line-height: 1.6;
  color: #35475e;
  font-size: clamp(13px, 2.2vw, 15px);
}

/* Right: dark glass form */
.form-panel{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:center;
  padding: clamp(28px, 4vw, 48px);
  /* subtle overlay glow */
  isolation:isolate;
}
.form-panel::before{
  content:"";
  position:absolute; inset:0;
  background:
    radial-gradient(1000px 700px at 80% 15%, rgba(0, 212, 255, .10), transparent 60%),
    radial-gradient(900px 600px at 20% 85%, rgba(20, 184, 255, .10), transparent 55%);
  filter: blur(0.2px);
  z-index:-1;
}
.form-card{
  width: min(420px, 92vw);
  padding: 28px 24px 24px;
  border-radius: 16px;
  border: 1px solid var(--stroke);
  background: linear-gradient(180deg, rgba(255,255,255,0.11), rgba(255,255,255,0.06));
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.14),
    0 18px 60px rgba(0,0,0,0.35),
    0 6px 24px rgba(0,0,0,0.35);
  backdrop-filter: blur(12px);
  color: var(--text-on-dark);
}
.form-title{
  margin: 0 0 18px;
  font-size: 26px;
  font-weight: 800;
  letter-spacing: 0.2px;
}

/* Flash */
.flash{
  margin: 6px 0 14px;
  padding: 10px 12px;
  background: rgba(255, 74, 74, .15);
  border:1px solid rgba(255, 74, 74, .35);
  color:#ffd1d1;
  border-radius:10px;
  font-size:14px;
}

/* Fields */
.field{ margin-bottom: 14px; }
.control.with-icon{
  position: relative;
  display:flex;
  align-items:center;
  background: rgba(255,255,255,0.12);
  border:1px solid var(--stroke);
  border-radius: 12px;
  padding: 0 12px 0 42px;   /* left space for icon */
  height: 48px;
}
.control.with-icon input{
  flex:1 1 auto;
  background: transparent;
  border:0; outline:0;
  color: var(--text-on-dark);
  font-size: 15px;
  height: 100%;
}
.control.with-icon input::placeholder{ color: rgba(234,242,255,0.75); }

/* Icons positioning */
.icon-left{
  position:absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: rgba(234,242,255,0.9);
  pointer-events: none;
}
.icon-right{
  position:absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  color: rgba(234,242,255,0.9);
}

/* Eye button */
.toggle-pass{
  background: transparent;
  border: 0;
  width: 40px; height: 38px;
  display:flex; align-items:center; justify-content:center;
  border-radius: 8px;
  cursor: pointer;
}
.toggle-pass:hover{ background: rgba(255,255,255,0.10); }

/* Button */
.btn-primary{
  width: 100%;
  appearance: none;
  border: 0; outline: 0;
  cursor: pointer;
  color: white;
  font-weight: 700;
  letter-spacing: .2px;
  font-size: 16px;
  padding: 12px 16px;
  border-radius: 12px;
  background: linear-gradient(135deg, #0284ff, #04befe);
  box-shadow:
    0 10px 30px rgba(2,132,255,.28),
    inset 0 1px 0 rgba(255,255,255,.18);
  transition: transform .05s ease, filter .15s ease;
}
.btn-primary:hover{ filter: brightness(1.05); }
.btn-primary:active{ transform: translateY(1px); }

.legal{
  margin-top: 12px;
  color: rgba(234,242,255,0.85);
  font-size: 12px;
  text-align: center;
}

/* Responsive */
@media (max-width: 1024px){
  .auth-shell{
    grid-template-columns: 1fr; /* stack */
  }
  .brand-panel{
    order: 2;                    /* show form first on mobile */
    padding: 24px;
  }
  .form-panel{
    order: 1;
    padding: 28px 20px;
  }
  .form-card{
    width: min(500px, 94vw);
  }
  .brand-inner{
    max-width: 620px;
    text-align: left;
  }
  .brand-logo{
    justify-content: flex-start;
  }
}