:root{
    --card:#1e293b; --accent:#38bdf8;
    --text:#e2e8f0; --muted:#94a3b8; --border:#334155; --danger:#ef4444;
  }
  *{box-sizing:border-box;margin:0;padding:0;font-family:'Segoe UI',system-ui,sans-serif;}
  body{
    background:linear-gradient(135deg,#0f172a,#1e293b);
    color:var(--text); min-height:100vh; display:flex; align-items:flex-start;
    justify-content:center; padding:24px;
  }
  .app{
    width:100%; max-width:720px; background:var(--card); border-radius:18px;
    padding:32px; box-shadow:0 20px 60px rgba(0,0,0,.5); border:1px solid var(--border);
    margin:auto;
  }
  h1{font-size:24px; margin-bottom:4px;}
  .sub{color:var(--muted); font-size:14px; margin-bottom:24px;}
  .screen{display:none;}
  .screen.active{display:block;}
  label{display:block; font-size:13px; margin-bottom:6px; color:var(--muted);}
  input{
    width:100%; padding:12px 14px; border-radius:10px; border:1px solid var(--border);
    background:#0f172a; color:var(--text); font-size:15px; margin-bottom:16px; outline:none;
    font-family:inherit;
  }
  input:focus{border-color:var(--accent); box-shadow:0 0 0 3px rgba(56,189,248,.15);}
  .row{display:flex; gap:12px;}
  .row > div{flex:1;}
  button{
    width:100%; padding:13px; border-radius:10px; border:none; cursor:pointer;
    font-size:15px; font-weight:600; background:var(--accent); color:#0f172a;
    transition:.2s;
  }
  button:hover{opacity:.9; transform:translateY(-1px);}
  .switch{text-align:center; margin-top:16px; font-size:14px; color:var(--muted);}
  .switch a{color:var(--accent); cursor:pointer; text-decoration:none;}
  .error{color:var(--danger); font-size:13px; margin-bottom:12px;}
  .step-badge{
    display:inline-block; background:rgba(56,189,248,.15); color:var(--accent);
    padding:4px 10px; border-radius:20px; font-size:12px; margin-bottom:12px;
  }
  .results{margin-top:16px; max-height:520px; overflow-y:auto; padding-right:4px;}
  .group-title{
    font-size:12px; text-transform:uppercase; letter-spacing:.8px;
    color:var(--accent); margin:18px 0 8px; font-weight:700;
  }
  .uni-card{
    background:#0f172a; border:1px solid var(--border); border-radius:12px;
    margin-bottom:10px; overflow:hidden; transition:.2s;
  }
  .uni-card:hover{border-color:var(--accent);}
  .uni-card.open{border-color:var(--accent);}
  .uni-header{
    padding:14px 16px; cursor:pointer; display:flex; justify-content:space-between;
    align-items:center; gap:12px;
  }
  .uni-header .left{flex:1; min-width:0;}
  .uni-header .name{font-weight:600; margin-bottom:4px;}
  .uni-header .meta{font-size:12px; color:var(--muted); display:flex; gap:10px; flex-wrap:wrap;}
  .uni-header .caret{color:var(--muted); font-size:12px; transition:.2s; flex-shrink:0;}
  .uni-card.open .caret{transform:rotate(90deg);}
  .variants{display:none; border-top:1px solid var(--border); background:rgba(56,189,248,.03);}
  .uni-card.open .variants{display:block;}
  .variant{
    padding:12px 16px 12px 32px; border-bottom:1px dashed rgba(148,163,184,.15);
    display:flex; justify-content:space-between; align-items:center; gap:12px;
    cursor:pointer; transition:.15s;
  }
  .variant:last-child{border-bottom:none;}
  .variant:hover{background:rgba(56,189,248,.08);}
  .variant .vname{font-size:13.5px;}
  .variant .vmeta{font-size:11px; color:var(--muted); margin-top:3px; display:flex; gap:8px;}
  .variant .arrow{color:var(--accent); font-size:14px;}
  .band{display:inline-block; font-size:10px; padding:2px 7px; border-radius:20px;
    font-weight:700; letter-spacing:.4px;}
  .band.low{background:rgba(34,197,94,.15); color:#22c55e;}
  .band.mid{background:rgba(59,130,246,.15); color:#3b82f6;}
  .band.high{background:rgba(234,179,8,.15); color:#eab308;}
  .band.premium{background:rgba(239,68,68,.15); color:#ef4444;}
  .level{display:inline-block; font-size:10px; padding:2px 7px; border-radius:20px;
    background:rgba(148,163,184,.15); color:var(--muted); font-weight:600;}
  .level.Foundation{background:rgba(168,85,247,.15); color:#a855f7;}
  .level.Diploma{background:rgba(14,165,233,.15); color:#0ea5e9;}
  .level.Bachelor{background:rgba(56,189,248,.18); color:#38bdf8;}
  .level.Master{background:rgba(234,179,8,.18); color:#eab308;}
  .level.PhD{background:rgba(239,68,68,.18); color:#ef4444;}
  .empty{color:var(--muted); font-size:14px; text-align:center; padding:24px 0;}
  .userbar{
    display:flex; justify-content:space-between; align-items:center;
    margin-bottom:20px; padding-bottom:14px; border-bottom:1px solid var(--border);
    font-size:13px; color:var(--muted);
  }
  .userbar a{color:var(--danger); cursor:pointer; text-decoration:none; font-weight:600;}
  .level-bar{
    display:flex; justify-content:space-between; align-items:center;
    background:rgba(56,189,248,.08); border:1px solid rgba(56,189,248,.25);
    padding:10px 14px; border-radius:10px; margin-bottom:16px; font-size:13px;
  }
  .level-bar b{color:var(--accent);}
  .level-bar a{color:var(--accent); cursor:pointer; text-decoration:underline; font-size:12px;}
  .level-cards{display:flex; flex-direction:column; gap:12px; margin-top:20px;}
  .level-card{
    background:#0f172a; border:1px solid var(--border); border-radius:12px;
    padding:18px; cursor:pointer; transition:.2s; display:flex; justify-content:space-between;
    align-items:center;
  }
  .level-card:hover{border-color:var(--accent); transform:translateX(4px);}
  .level-card .lc-title{font-weight:600; font-size:15px; margin-bottom:4px;}
  .level-card .lc-sub{font-size:12px; color:var(--muted);}
  .level-card .lc-icon{font-size:24px;}
  mark{background:rgba(56,189,248,.35); color:inherit; padding:0 2px; border-radius:3px;}
/* ===================== Selection Bar ===================== */
.selection-bar{
  position: sticky;
  bottom: 0;
  margin-top: 16px;
  padding: 14px 18px;
  background: #0f172a;
  border: 1px solid var(--accent);
  border-radius: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  box-shadow: 0 -10px 30px rgba(0,0,0,.4);
}
.sel-info{ font-size: 13px; color: var(--muted); }
.sel-info b{ color: var(--accent); }
.btn-next{
  width: auto;
  padding: 10px 22px;
  font-size: 14px;
  border-radius: 8px;
}
.btn-next:disabled{
  opacity: .35;
  cursor: not-allowed;
  transform: none;
}

/* ===================== Variant Checkbox ===================== */
.variant{
  display: flex;
  align-items: center;
  gap: 12px;
}
.variant .checkbox{
  width: 20px;
  height: 20px;
  border: 2px solid var(--border);
  border-radius: 5px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 12px;
  font-weight: 700;
  color: transparent;
  transition: .15s;
}
.variant.selected{
  background: rgba(56,189,248,.12);
  border-left: 3px solid var(--accent);
}
.variant.selected .checkbox{
  background: var(--accent);
  border-color: var(--accent);
  color: #0f172a;
}
/* ===================== Documents Screen ===================== */
.selected-recap{
  background:#0f172a; border:1px solid var(--border); border-radius:12px;
  padding:16px; margin-bottom:20px;
}
.recap-title{
  font-size:12px; text-transform:uppercase; letter-spacing:.8px;
  color:var(--accent); margin-bottom:10px; font-weight:700;
}
.recap-list{display:flex; flex-direction:column; gap:8px;}
.recap-item{
  display:flex; justify-content:space-between; gap:12px; font-size:13px;
  padding:8px 0; border-bottom:1px dashed rgba(148,163,184,.15);
}
.recap-item:last-child{border-bottom:none;}
.recap-item .rname{flex:1; min-width:0;}
.recap-item .runi{font-size:11px; color:var(--muted); margin-top:3px;}
.recap-item .rfee{font-size:12px; color:var(--accent); white-space:nowrap;}

.upload-list{display:flex; flex-direction:column; gap:10px; margin-bottom:20px;}
.upload-item{
  display:flex; align-items:center; gap:14px; background:#0f172a;
  border:1px solid var(--border); border-radius:12px; padding:14px 16px;
}
.upload-icon{font-size:24px; flex-shrink:0;}
.upload-info{flex:1; min-width:0;}
.upload-name{font-size:14px; font-weight:600; margin-bottom:2px;}
.upload-hint{font-size:11.5px; color:var(--muted);}
.req-star{color:var(--danger);}
.opt-tag{
  font-size:10px; color:var(--muted); background:rgba(148,163,184,.15);
  padding:2px 6px; border-radius:20px; margin-left:4px; font-weight:500;
}
.upload-btn{
  flex-shrink:0; background:transparent; border:1px solid var(--accent);
  color:var(--accent); padding:8px 14px; border-radius:8px; font-size:12px;
  font-weight:600; cursor:pointer; transition:.15s;
}
.upload-btn:hover{background:rgba(56,189,248,.08);}
.upload-btn input{display:none;}
.upload-status{
  flex-shrink:0; font-size:11px; color:var(--muted); min-width:90px; text-align:right;
}
.upload-status.ok{color:#22c55e; font-weight:600;}

.details-actions{display:flex; gap:12px; margin-top:24px;}
.details-actions button{width:100%;}
.btn-secondary{
  background:transparent; color:var(--accent); border:1px solid var(--accent);
}
.btn-secondary:hover{background:rgba(56,189,248,.08);}
.details-actions button:disabled{opacity:.35; cursor:not-allowed; transform:none;}
/* ===================== Remove button ===================== */
.upload-item{position:relative;}
.upload-remove{
  flex-shrink:0;
  background:transparent;
  border:none;
  color:var(--muted);
  width:24px;
  height:24px;
  border-radius:50%;
  display:none;
  align-items:center;
  justify-content:center;
  cursor:pointer;
  font-size:16px;
  line-height:1;
  transition:.15s;
  margin-left:6px;
}
.upload-remove:hover{
  color:#ef4444;
  background:rgba(239,68,68,.1);
}
.upload-item.has-file .upload-remove{display:flex;}
/* ===================== OTP Input ===================== */
.otp-inputs{
  display: flex;
  gap: 10px;
  justify-content: center;
  margin-bottom: 16px;
}
.otp-digit{
  width: 48px;
  height: 56px;
  text-align: center;
  font-size: 22px;
  font-weight: 700;
  padding: 0;
  margin: 0;
  border-radius: 10px;
  letter-spacing: 0;
  font-family: ui-monospace, 'SF Mono', monospace;
}
.otp-digit:focus{
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(56,189,248,.25);
}
.otp-digit.filled{
  border-color: var(--accent);
  background: rgba(56,189,248,.06);
}
#resendLink.disabled{
  pointer-events: none;
  opacity: .4;
  cursor: not-allowed;
}