:root{
    --rd-ink:#0B0F17;
    --rd-ink-soft:#111827;
    --rd-paper:#F4F6F9;
    --rd-paper-raised:#FFFFFF;
    --rd-green:#2454D9;
    --rd-green-deep:#12327A;
    --rd-green-light:#5B8DFF;
    --rd-gold:#4C7BEF;
    --rd-gold-soft:#DCE6FB;
    --rd-text:#12151B;
    --rd-text-muted:#5B6270;
    --rd-line:#E2E5EA;
    --rd-error:#C4331F;
    --rd-body: 'Inter', -apple-system, sans-serif;
    --rd-mono: 'JetBrains Mono', monospace;
  }

  *{box-sizing:border-box;}
  body{
    margin:0;
    font-family:var(--rd-body);
    color:var(--rd-text);
    background:var(--rd-paper);
    -webkit-font-smoothing:antialiased;
  }
  a{text-decoration:none;color:inherit;}
  h1,h2,h3{margin:0;font-family:var(--rd-body);font-weight:700;color:var(--rd-ink);letter-spacing:-.01em;}
  p{margin:0;}
  button{font-family:inherit;cursor:pointer;}
  input{font-family:inherit;}

  .rd-shell{
    min-height:100vh;
    display:grid;
    grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  }
  @media(max-width:960px){
    .rd-shell{grid-template-columns:1fr;}
  }

  /* ===== Left brand panel — lighter, livelier blue ===== */
  .rd-panel{
    background:linear-gradient(155deg, var(--rd-green-light) 0%, var(--rd-green) 65%, var(--rd-green-deep) 130%);
    color:#FFFFFF;
    padding:56px;
    display:flex;
    flex-direction:column;
    justify-content:space-between;
    position:relative;
    overflow:hidden;
  }
  .rd-panel::before{
    content:"";position:absolute;inset:0;
    background:radial-gradient(circle at 85% 12%, rgba(255,255,255,0.22), transparent 50%),
               radial-gradient(circle at 8% 92%, rgba(255,255,255,0.14), transparent 50%);
    pointer-events:none;
  }
  @media(max-width:960px){.rd-panel{display:none;}}

  .rd-logo{
    display:flex;align-items:center;gap:10px;
    font-weight:700;font-size:1.25rem;color:#FFFFFF;
    position:relative;z-index:1;
  }
  .rd-logo__mark{
    width:30px;height:30px;border-radius:8px;
    background:rgba(255,255,255,0.18);
    border:1px solid rgba(255,255,255,0.35);
    display:flex;align-items:center;justify-content:center;
    color:#FFFFFF;font-size:.9rem;font-weight:700;font-family:var(--rd-mono);
    flex-shrink:0;
  }

  .rd-panel__body{position:relative;z-index:1;max-width:420px;}
  .rd-panel__body h1{
    color:#FFFFFF;font-size:clamp(1.9rem,3vw,2.5rem);line-height:1.15;
    margin-bottom:18px;
  }
  .rd-panel__body p{
    color:rgba(255,255,255,0.82);font-size:1.02rem;line-height:1.6;margin-bottom:32px;
  }

  .rd-mini-invoice{
    position:relative;z-index:1;
    background:rgba(255,255,255,0.12);
    border:1px solid rgba(255,255,255,0.28);
    border-radius:14px;
    padding:18px 20px;
    backdrop-filter:blur(6px);
  }
  .rd-mini-invoice__row{
    display:flex;justify-content:space-between;font-size:.85rem;
    padding:7px 0;border-bottom:1px dashed rgba(255,255,255,0.25);color:rgba(255,255,255,0.85);
  }
  .rd-mini-invoice__row:last-of-type{border-bottom:none;}
  .rd-mini-invoice__total{
    display:flex;justify-content:space-between;align-items:center;margin-top:10px;
  }
  .rd-mini-invoice__total-label{font-size:.78rem;color:rgba(255,255,255,0.7);}
  .rd-mini-invoice__total-value{font-family:var(--rd-mono);font-size:1.2rem;font-weight:600;color:#FFFFFF;}

  .rd-panel__quote{
    position:relative;z-index:1;
    border-top:1px solid rgba(255,255,255,0.25);
    padding-top:24px;
    margin-top:32px;
  }
  .rd-panel__quote blockquote{
    font-size:.95rem;font-style:italic;line-height:1.6;color:rgba(255,255,255,0.9);margin-bottom:12px;
  }
  .rd-panel__quote cite{font-style:normal;font-size:.82rem;color:rgba(255,255,255,0.65);}

  /* ===== Right form panel ===== */
  .rd-formside{
    display:flex;
    align-items:center;
    justify-content:center;
    padding:56px 24px;
  }
  .rd-formcard{width:100%;max-width:400px;}

  .rd-logo--mobile{display:none;margin-bottom:32px;}
  @media(max-width:960px){.rd-logo--mobile{display:flex;color:var(--rd-ink);}
    .rd-logo--mobile .rd-logo__mark{
      background:linear-gradient(155deg,var(--rd-green-light) 0%, var(--rd-green-deep) 100%);
      color:#FFFFFF;border:none;
    }
  }

  .rd-formcard__head{margin-bottom:32px;}
  .rd-formcard__head h2{font-size:1.7rem;margin-bottom:8px;}
  .rd-formcard__head p{color:var(--rd-text-muted);font-size:.95rem;}
  .rd-formcard__head p a{color:var(--rd-green);font-weight:600;}
  .rd-formcard__head p a:hover{text-decoration:underline;}

  .rd-field{margin-bottom:20px;}
  .rd-field label{
    display:block;font-size:.85rem;font-weight:600;color:var(--rd-ink);margin-bottom:7px;
  }
  .rd-field__error{font-size:.78rem;color:var(--rd-error);margin-top:6px;display:none;}
  .rd-field.has-error .rd-field__error{display:block;}
  .rd-field.has-error input{border-color:var(--rd-error) !important;}

  .rd-field__labelrow{display:flex;justify-content:space-between;align-items:center;margin-bottom:7px;}
  .rd-field__labelrow label{margin-bottom:0;}
  .rd-forgot{font-size:.82rem;font-weight:600;color:var(--rd-green);}
  .rd-forgot:hover{text-decoration:underline;}

  .rd-input-wrap{position:relative;}
  .rd-input{
    width:100%;
    padding:12px 14px;
    border:1.5px solid var(--rd-line);
    border-radius:10px;
    font-size:.95rem;
    color:var(--rd-text);
    background:var(--rd-paper-raised);
    transition:border-color .15s ease, box-shadow .15s ease;
  }
  .rd-input::placeholder{color:#A6ACB8;}
  .rd-input:focus{
    outline:none;border-color:var(--rd-green);box-shadow:0 0 0 4px rgba(36,84,217,0.12);
  }

  .rd-input-wrap .rd-toggle-pass{
    position:absolute;right:6px;top:50%;transform:translateY(-50%);
    background:none;border:none;padding:8px;color:var(--rd-text-muted);
    display:flex;align-items:center;justify-content:center;border-radius:6px;
  }
  .rd-input-wrap .rd-toggle-pass:hover{color:var(--rd-ink);}
  .rd-input-wrap .rd-input{padding-right:44px;}

  .rd-checkbox{
    display:flex;align-items:center;gap:9px;font-size:.88rem;color:var(--rd-text-muted);
    margin-bottom:24px;
  }
  .rd-checkbox input{accent-color:var(--rd-green);width:16px;height:16px;flex-shrink:0;}

  .rd-btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:13px 22px;border-radius:10px;font-weight:600;font-size:.95rem;
    border:1px solid transparent;transition:transform .15s ease, box-shadow .15s ease, background .15s ease;
    width:100%;
  }
  .rd-btn--primary{background:var(--rd-ink);color:var(--rd-paper);}
  .rd-btn--primary:hover{transform:translateY(-1px);box-shadow:0 6px 16px rgba(11,15,23,0.25);}

  .rd-divider{
    display:flex;align-items:center;gap:14px;margin:28px 0;color:var(--rd-text-muted);font-size:.8rem;
  }
  .rd-divider::before,.rd-divider::after{content:"";flex:1;height:1px;background:var(--rd-line);}

  .rd-oauth{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
  .rd-oauth-btn{
    display:flex;align-items:center;justify-content:center;gap:8px;
    padding:11px 14px;border:1.5px solid var(--rd-line);border-radius:10px;
    font-size:.88rem;font-weight:600;color:var(--rd-ink);background:var(--rd-paper-raised);
    transition:border-color .15s ease, background .15s ease;
  }
  .rd-oauth-btn:hover{border-color:var(--rd-green);background:var(--rd-gold-soft);}

  .rd-signup-hint{
    text-align:center;font-size:.88rem;color:var(--rd-text-muted);margin-top:28px;
  }
  .rd-signup-hint a{color:var(--rd-green);font-weight:600;}
  .rd-signup-hint a:hover{text-decoration:underline;}