/* Flutter-inspired styling extracted from tax-calculator.php */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --primary:#ff7300;
  --primary-light:#fff3eb;
  --accent:#ffd5b7;
  --green:#01b173;
  --red:#ea4335;
  --text:#2e2e2e;
  --muted:#6a7081;
  --border:#e9e9e9;
  --bg:#f8f8f8;
  --card:#ffffff;
  --radius:14px;
  --shadow:0 6px 24px rgba(20, 24, 40, .06), 0 2px 8px rgba(20, 24, 40, .04);
}
html{scroll-behavior:smooth}
body{font-family:'Poppins','Google Sans',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;background:var(--bg);color:var(--text);min-height:100vh;font-size:14px;line-height:1.55}

.site-header{background:#fff;color:var(--text);padding:0 1.2rem;display:flex;align-items:center;justify-content:space-between;height:64px;position:sticky;top:0;z-index:100;border-bottom:1px solid #efefef}
.brand-link{display:inline-flex;align-items:center;text-decoration:none}
.site-logo{display:block;height:34px;width:auto;object-fit:contain}
.site-title{font-size:1.03rem;font-weight:700;color:#2e2e2e;letter-spacing:.1px}
.site-header .badge{background:var(--primary-light);padding:.2rem .6rem;border-radius:100px;font-size:.75rem;font-weight:600;color:var(--primary)}

.wrapper{max-width:940px;margin:0 auto;padding:1.35rem 1rem 1.8rem}

@media(max-width:640px){
  .site-header{height:58px;padding:0 .8rem}
  .site-logo{height:30px}
  .site-title{font-size:.92rem}
  .site-header .badge{font-size:.68rem;padding:.15rem .45rem}
}

.card{background:var(--card);border-radius:16px;box-shadow:var(--shadow);overflow:hidden;margin-bottom:1.3rem;border:1px solid #f2f2f2}
.card-header{background:var(--primary-light);border-bottom:1px solid var(--border);padding:1.05rem 1.25rem;display:flex;align-items:center;gap:.6rem}
.card-header h2{font-size:1rem;font-weight:200;color:var(--primary)}
.card-header .icon{width:28px;height:28px;background:var(--primary);border-radius:8px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.card-header .icon svg{width:16px;height:16px;fill:none;stroke:#fff;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.card-body{padding:1.35rem}

.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.05rem}
@media(max-width:600px){.form-grid{grid-template-columns:1fr}}
.form-group{display:flex;flex-direction:column;gap:.35rem}
.form-group label{font-size:.82rem;font-weight:500;color:#4c4949;text-transform:none;letter-spacing:0}
.form-group .hint{font-size:.78rem;color:var(--muted);margin-top:.15rem}
.input-wrap{position:relative}
.input-wrap .prefix{position:absolute;left:.9rem;top:50%;transform:translateY(-50%);color:var(--muted);font-size:.9rem;pointer-events:none}
.input-wrap input{width:100%;height:44px;padding:.65rem .9rem .65rem 1.9rem;border:1px solid #e6e8ef;border-radius:10px;font-size:.92rem;font-weight:500;color:#2f2f2f;background:#fff;transition:border-color .18s,box-shadow .18s}
.input-wrap input::placeholder{color:#b6b8bf}
.input-wrap input:focus{outline:none;border-color:#ffb98a;box-shadow:0 0 0 3px rgba(255,115,0,.10)}
input[type=number]::-webkit-inner-spin-button{-webkit-appearance:none}
.select-wrap select{width:100%;height:44px;padding:.65rem .9rem;border:1px solid #e6e8ef;border-radius:10px;font-size:.92rem;font-weight:500;color:#2f2f2f;background:#fff;appearance:none;cursor:pointer;transition:border-color .18s,box-shadow .18s}
.select-wrap select:focus{outline:none;border-color:#ffb98a;box-shadow:0 0 0 3px rgba(255,115,0,.10)}
.full-width{grid-column:1/-1}

.section-label{grid-column:1/-1;font-size:.78rem;font-weight:700;color:var(--primary);text-transform:uppercase;letter-spacing:.6px;padding:.5rem 0 .2rem;border-bottom:1px solid #ffe0cc;margin-top:.4rem}

.btn-calc{width:100%;padding:.88rem;background:linear-gradient(180deg,#ff943f 0%,#ff7300 100%);color:#fff;border:none;border-radius:10px;font-size:.95rem;font-weight:700;cursor:pointer;transition:filter .18s,transform .1s,box-shadow .18s;letter-spacing:.2px;margin-top:.5rem;box-shadow:0 8px 20px rgba(255,115,0,.24)}
.btn-calc:hover{filter:brightness(.96)}
.btn-calc:active{transform:scale(.98)}

.alert-error{background:#fef2f2;border:1px solid #fca5a5;border-radius:8px;padding:.9rem 1rem;color:var(--red);font-size:.9rem;margin-bottom:1rem}

.results-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.2rem}
@media(max-width:580px){.results-grid{grid-template-columns:1fr}}
.regime-card{border-radius:var(--radius);overflow:hidden;border:2px solid var(--border);transition:border-color .2s}
.regime-card.recommended{border-color:var(--green)}
.regime-header{padding:.8rem 1.2rem;font-weight:700;font-size:.9rem;letter-spacing:.2px;display:flex;align-items:center;justify-content:space-between}
.regime-card.old .regime-header{background:#fff6ee;color:#9a3412}
.regime-card.new .regime-header{background:#edfff5;color:#14532d}
.regime-body{padding:1.2rem}
.tax-row{display:flex;justify-content:space-between;align-items:center;padding:.45rem 0;font-size:.88rem;border-bottom:1px solid var(--border)}
.tax-row:last-child{border-bottom:none}
.tax-row .label{color:var(--muted)}
.tax-row .value{font-weight:600}
.tax-row.total{padding-top:.6rem;margin-top:.2rem;border-top:2px solid var(--border);border-bottom:none}
.tax-row.total .label{font-weight:700;color:var(--text)}
.tax-row.total .value{font-size:1.1rem}
.payable{color:var(--red)}
.refundable{color:var(--green)}
.neutral{color:var(--muted)}
.rec-badge{font-size:.7rem;padding:.15rem .5rem;border-radius:100px;background:var(--green);color:#fff}

.summary-banner{border-radius:var(--radius);padding:1.2rem 1.35rem;display:flex;align-items:center;gap:1rem;margin-bottom:1.3rem}
.summary-banner.save{background:#ecfdf5;border:1px solid #a7f3d0}
.summary-banner.equal{background:#f1f5f9;border:1px solid var(--border)}
.summary-banner .big{font-size:1.35rem;font-weight:800;color:var(--green)}
.summary-banner.loses .big{color:var(--red)}
.summary-banner p{font-size:.9rem;color:var(--muted)}
.summary-banner strong{color:var(--text)}

.tab-nav{display:flex;gap:.45rem;overflow-x:auto;background:#fff;border:1px solid #f0f0f0;border-radius:12px;padding:.45rem;margin-bottom:1.2rem;box-shadow:0 4px 14px rgba(20,24,40,.04)}
.tab-btn{padding:.52rem .9rem;border:1px solid transparent;background:#fff;cursor:pointer;font-size:.85rem;font-weight:600;color:var(--muted);border-radius:10px;white-space:nowrap;transition:all .16s}
.tab-btn:hover{border-color:#ffe2cd;color:#8b4f22;background:#fff8f3}
.tab-btn.active{color:var(--primary);background:var(--primary-light);border-color:#ffd7bc;box-shadow:inset 0 0 0 1px #ffd7bc}
.tab-pane{display:none}
.tab-pane.active{display:block}

.sub-tab-nav{display:flex;gap:.45rem;flex-wrap:wrap;margin-bottom:1.05rem;padding-bottom:.8rem;border-bottom:1px dashed #f0d7c5}
.sub-tab-btn{border:1px solid #ffd7bc;background:#fff6ef;color:#9a5a2a;padding:.44rem .75rem;border-radius:10px;font-size:.78rem;font-weight:600;cursor:pointer;transition:all .15s}
.sub-tab-btn:hover{border-color:#ffbf94;background:#fff1e6}
.sub-tab-btn.active{background:var(--primary);border-color:var(--primary);color:#fff}
.sub-tab-pane{display:none}
.sub-tab-pane.active{display:block}

.note{font-size:.8rem;color:var(--muted);font-style:italic;margin-top:.5rem}
hr.divider{border:none;border-top:1px dashed var(--border);margin:1rem 0}

@media (max-width: 640px){
  .wrapper{padding:1rem .75rem 1.3rem}
  .card{border-radius:14px}
  .card-body{padding:1.05rem}
  .tab-nav{padding:.35rem;gap:.3rem}
  .tab-btn{padding:.48rem .72rem;font-size:.8rem}
}