/* =========================
   Root Variables
========================= */
:root{
  --ink:#0b1220;
  --blue:#007aff;

  --glass-strong: rgba(255,255,255,.45);
  --glass-soft: rgba(255,255,255,.18);
  --glass-border: rgba(255,255,255,.55);

  --shadow-main: 0 30px 80px rgba(0,0,0,.20);
}

/* =========================
   Reset
========================= */
*{
  box-sizing:border-box;
}

html, body{
  margin:0;
  padding:0;
}

/* =========================
   Body
========================= */
body{
  font-family: system-ui,-apple-system,Segoe UI,Roboto,Arial;
  color:var(--ink);
  text-align:center;
  min-height:100vh;

  background:
    radial-gradient(520px 360px at 20% 10%, rgba(0,122,255,.22), transparent 70%),
    radial-gradient(460px 340px at 80% 18%, rgba(88,86,214,.20), transparent 72%),
    linear-gradient(180deg,#f6f7fb,#eef1f6);
}

/* =========================
   Apple Noise
========================= */
body::after{
  content:"";
  position:fixed;
  top:0;
  left:0;
  right:0;
  bottom:0;
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='1'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)' opacity='.028'/%3E%3C/svg%3E");
  pointer-events:none;
  z-index:1;
}

/* =========================
   Glass Effect
========================= */
.glass{
  position:relative;
  background: linear-gradient(
    180deg,
    var(--glass-strong),
    var(--glass-soft)
  );
  backdrop-filter: blur(26px) saturate(180%);
  border:1px solid var(--glass-border);
  border-radius:28px;
  box-shadow: var(--shadow-main);
}

/* =========================
   Header
========================= */
.glass-header{
  position:fixed;
  top:16px;
  left:50%;
  transform:translateX(-50%);
  width:calc(100% - 32px);
  max-width:700px;
  z-index:20;
}

.header-row{
  display:flex;
  align-items:center;
  gap:12px;
}

.header-box{
  padding:20px;
}

.header-text{
  flex:1;
  text-align:center;
}

.title{
  margin:0;
  font-size:1.35rem;
  font-weight:900;
}

.subtitle{
  margin-top:6px;
  font-size:.95rem;
  opacity:.8;
}
/* =========================
   Back Button
========================= */
.back-btn{
  display:flex;
  align-items:center;
  gap:6px;

  padding:8px 14px;
  border-radius:999px;

  text-decoration:none;
  font-weight:700;
  font-size:.9rem;
  color:var(--ink);

  background:rgba(255,255,255,.55);
  border:1px solid rgba(255,255,255,.65);

  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);

  box-shadow:
    0 10px 25px rgba(0,0,0,.18),
    inset 0 1px 1px rgba(255,255,255,.8);

  transition:transform .2s ease;
}

.back-btn:hover{
  transform:translateY(-2px);
}
/* =========================
   Layout
========================= */
.container{
  max-width:900px;
  margin:220px auto 40px;
  padding:0 16px;
  position:relative;
  z-index:2;
}

/* =========================
   Form
========================= */
form{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px;
}

.field{
  display:flex;
  flex-direction:column;
  align-items:center;

  gap:8px;
}

.field-full{
  grid-column:1 / -1;
}

input, select{
  width:100%;
  max-width:420px;
  padding:12px;
  border-radius:16px;
  border:1px solid #ccc;
}

/* =========================
   Checkboxes
========================= */
.checks{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:10px;
}

.check{
  padding:12px;
  border-radius:16px;
  background:rgba(255,255,255,.6);
  cursor:pointer;
}

/* =========================
   Button
========================= */
.actions{
  grid-column:1 / -1;
}

.btn{
  padding:14px 24px;
  border:none;
  border-radius:18px;
  background:var(--blue);
  color:#fff;
  font-weight:900;
}

/* =========================
   Footer
========================= */
.footer{
  margin:20px 0;
  opacity:.7;
}

textarea{
  width:100%;
  max-width:420px;
  padding:14px 16px;
  border-radius:16px;
  border:1px solid rgba(255,255,255,.55);
  background:rgba(255,255,255,.75);
  font-size:.95rem;
  resize:vertical;
  outline:none;
  font-family:inherit;
}

textarea:focus{
  border-color: rgba(0,122,255,.55);
  box-shadow: 0 0 0 4px rgba(0,122,255,.18);
}

/* =========================
   Mobile
========================= */
@media(max-width:768px){
  form{
    grid-template-columns:1fr;
  }
  .checks{
    grid-template-columns:1fr;
  }
  .header-row{
    flex-direction:column;
  }

  .back-btn{
    align-self:flex-start;
  }
}