/* =============================================================
   DESIGN TOKENS — identical to index.html / tds-calculator
   ============================================================= */
:root{
  --p:#003d6b; --p-dark:#00284a; --p-mid:#004f8b; --p-soft:#1a5a96;
  --p-tint:#e6eef7; --p-tint2:#ccdcee;
  --gold:#b8860b; --gold-lt:#d4a017; --gold-pl:#fdf6e3;
  --white:#ffffff; --off:#f5f7fa; --off2:#edf1f6;
  --text:#1a2535; --mid:#3a4f63; --muted:#56687a;
  --border:#d8e2ec; --bdr-dk:#b8c8d8;
  --sh-xs:0 1px 3px rgba(0,40,74,.06),0 1px 2px rgba(0,40,74,.04);
  --sh-sm:0 2px 8px rgba(0,40,74,.08),0 1px 4px rgba(0,40,74,.05);
  --sh-md:0 4px 20px rgba(0,40,74,.11),0 2px 8px rgba(0,40,74,.07);
  --r:4px; --r2:8px; --r3:12px;
  --green:#15803d; --green-bg:#f0fdf4; --green-border:#bbf7d0;
  --red:#b91c1c; --red-bg:#fef2f2; --red-border:#fecaca;
  --gst-purple:#7c3aed; --gst-purple-bg:#f5f3ff; --gst-purple-border:#ddd6fe;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px;scroll-padding-top:108px;}
@media(max-width:768px){html{scroll-padding-top:70px;}}
@media(max-width:480px){html{scroll-padding-top:60px;}}
body{
  font-family:'Lato',sans-serif;font-size:1rem;line-height:1.72;
  color:var(--text);background:var(--white);
  overflow-x:hidden;-webkit-font-smoothing:antialiased;
  padding-top:108px;
}
::-webkit-scrollbar{width:4px}
::-webkit-scrollbar-track{background:var(--p-dark)}
::-webkit-scrollbar-thumb{background:var(--gold);border-radius:2px}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button{font-family:inherit;cursor:pointer;border:none;outline:none}

/* ── TOP BAR ── */
.topbar{background:#00284a!important;height:38px!important;display:flex!important;align-items:center!important;justify-content:space-between!important;padding:0 1.5rem!important;border-bottom:1px solid rgba(255,255,255,.06)!important;position:fixed!important;top:0!important;left:0!important;right:0!important;z-index:1100!important;}
.topbar-left{font-family:'Source Code Pro',monospace!important;font-size:.68rem!important;color:#d4a017!important;letter-spacing:.06em!important;text-transform:uppercase!important;}
.topbar-right{display:flex!important;align-items:center!important;gap:1.6rem!important;}
.topbar-link{display:flex!important;align-items:center!important;gap:.4rem!important;font-family:'Source Code Pro',monospace!important;font-size:.7rem!important;color:rgba(255,255,255,.6)!important;letter-spacing:.03em!important;text-decoration:none!important;transition:color .2s!important;}
.topbar-link:hover{color:#d4a017!important;}
.topbar-link svg{width:12px!important;height:12px!important;fill:currentColor!important;flex-shrink:0!important;}
.tb-sep{width:1px!important;height:14px!important;background:rgba(255,255,255,.15)!important;}

/* ── NAV ── */
nav{position:fixed;top:38px;left:0;right:0;z-index:1000;height:70px;background:var(--white);display:flex;align-items:center;justify-content:space-between;padding:0 3rem;border-bottom:3px solid var(--gold);box-shadow:var(--sh-sm);transition:box-shadow .3s;}
nav.scrolled{box-shadow:var(--sh-md)}
.nav-brand{display:flex;align-items:center;gap:.9rem}
.nav-mark{width:50px;height:50px;background:var(--white);border-radius:var(--r);display:flex;align-items:center;justify-content:center;border:1.5px solid rgba(184,134,11,.3);flex-shrink:0;overflow:hidden;padding:3px;}
.nav-mark img{width:100%;height:100%;object-fit:contain;display:block}
.nav-text{display:flex;flex-direction:column;gap:1px}
.nav-name{font-family:'Merriweather',serif;font-size:1.08rem;font-weight:700;color:#d4a017;line-height:1;letter-spacing:-.015em;}
.nav-sub{font-family:'Source Code Pro',monospace;font-size:.58rem;color:var(--muted);letter-spacing:.12em;text-transform:uppercase;}
.nav-links{display:flex;list-style:none;align-items:center}
.nav-links li a{font-size:.86rem;font-weight:700;color:var(--mid);padding:.42rem .82rem;border-radius:var(--r);transition:color .2s,background .2s;letter-spacing:.01em;display:block;}
.nav-links li a:hover{color:var(--p);background:var(--p-tint)}
.nav-links .cta a{background:var(--p);color:var(--white)!important;margin-left:.4rem;padding:.46rem 1.2rem!important;border-radius:var(--r);}
.nav-links .cta a:hover{background:var(--p-soft)!important;box-shadow:0 4px 14px rgba(0,61,107,.3)}
.hamburger{display:none;flex-direction:column;gap:5px;padding:6px;background:none;border:none}
.hamburger span{display:block;width:22px;height:2px;background:var(--p);border-radius:2px;transition:all .3s}
.mob-menu{display:none;position:fixed;top:108px;left:0;right:0;background:var(--white);border-top:3px solid var(--gold);border-bottom:1px solid var(--border);padding:.75rem 1.5rem;z-index:999;flex-direction:column;box-shadow:var(--sh-md);height:auto !important;max-height:calc(100vh - 70px);overflow-y:auto;align-items:stretch !important;justify-content:flex-start !important;}
.mob-menu.open{display:flex}
.mob-menu a{font-size:.9rem;font-weight:700;color:var(--mid);padding:.68rem .5rem;border-bottom:1px solid var(--border);transition:color .2s;}
.mob-menu a:last-child{border:none;color:var(--p);font-weight:900}
.mob-menu a:hover{color:var(--p)}

/* ── FOOTER ── */
footer{background:#010f1c;border-top:1px solid rgba(184,134,11,.18);padding:3.5rem 3rem 2rem;}
.footer-grid{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:3rem;padding-bottom:2.5rem;border-bottom:1px solid rgba(255,255,255,.06);}
.footer-brand-col{}
.footer-logo-row{display:flex;align-items:center;gap:.8rem;margin-bottom:.9rem}
.footer-mark{width:44px;height:44px;background:var(--white);border-radius:var(--r);display:flex;align-items:center;justify-content:center;border:1.5px solid rgba(184,134,11,.25);flex-shrink:0;overflow:hidden;padding:3px;}
.footer-mark img{width:100%;height:100%;object-fit:contain;display:block}
.footer-brand-name{font-family:'Merriweather',serif;font-size:1.15rem;font-weight:900;color:var(--white)}
.footer-brand-name span{color:var(--gold)}
.footer-tagline{font-size:.87rem;font-weight:300;color:rgba(255,255,255,.38);line-height:1.7;margin-bottom:1.4rem;max-width:280px;}
.footer-contact-row{display:flex;flex-direction:column;gap:.5rem}
.footer-contact-item{display:flex;align-items:center;gap:.5rem;font-size:.83rem;color:rgba(255,255,255,.45);transition:color .2s;}
.footer-contact-item:hover{color:var(--gold-lt)}
.footer-contact-item svg{width:13px;height:13px;fill:currentColor;flex-shrink:0}
.footer-col-title{font-family:'Lato',sans-serif;font-size:.7rem;font-weight:900;color:rgba(255,255,255,.55);letter-spacing:.12em;text-transform:uppercase;margin-bottom:1.1rem;padding-bottom:.5rem;border-bottom:1px solid rgba(184,134,11,.18);}
.footer-links{display:flex;flex-direction:column;gap:.55rem}
.footer-links a{font-size:.85rem;color:rgba(255,255,255,.4);transition:color .2s;font-weight:400}
.footer-links a:hover{color:var(--gold-lt)}
.footer-bottom{max-width:1200px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding-top:1.5rem;flex-wrap:wrap;gap:1rem;}
.footer-copy{font-family:'Source Code Pro',monospace;font-size:.67rem;color:rgba(255,255,255,.2)}
.footer-social{display:flex;gap:.6rem}
.footer-social a{width:32px;height:32px;border:1px solid rgba(255,255,255,.1);border-radius:var(--r);display:grid;place-items:center;color:rgba(255,255,255,.35);font-family:'Source Code Pro',monospace;font-size:.65rem;font-weight:600;transition:all .2s;}
.footer-social a:hover{border-color:var(--gold);color:var(--gold-lt);background:rgba(184,134,11,.08)}

/* ── WA FLOAT ── */
.wa-float{position:fixed;bottom:28px;right:28px;z-index:9999;display:flex;align-items:center;gap:0;cursor:pointer;text-decoration:none;}
.wa-float__label{background:#25d366;color:#fff;font-family:'Lato',sans-serif;font-size:.82rem;font-weight:700;letter-spacing:.03em;padding:.45rem .9rem .45rem 1.1rem;border-radius:24px 0 0 24px;white-space:nowrap;max-width:0;overflow:hidden;opacity:0;transition:max-width .35s ease,opacity .25s ease;box-shadow:-2px 4px 14px rgba(0,0,0,.15);}
.wa-float:hover .wa-float__label{max-width:220px;opacity:1}
.wa-float__icon{width:58px;height:58px;background:#25d366;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0;box-shadow:0 4px 20px rgba(37,211,102,.45),0 2px 8px rgba(0,0,0,.15);transition:transform .25s ease,box-shadow .25s ease;position:relative;}
.wa-float__icon svg{width:30px;height:30px}
.wa-float:hover .wa-float__icon{transform:scale(1.1) rotate(-5deg);box-shadow:0 6px 28px rgba(37,211,102,.6),0 3px 12px rgba(0,0,0,.2)}
.wa-float__icon::after{content:'';position:absolute;width:58px;height:58px;border-radius:50%;background:rgba(37,211,102,.35);animation:waPulse 2.2s ease-out infinite;}
@keyframes waPulse{0%{transform:scale(1);opacity:.7}70%{transform:scale(1.7);opacity:0}100%{transform:scale(1.7);opacity:0}}

/* ============================================================
   PAGE LAYOUT
   ============================================================ */
.page-wrap{max-width:900px;margin:0 auto;padding:3rem 1.5rem 5rem}

/* ── PAGE HERO ── */
.page-hero{background:var(--p);padding:3rem 3rem 2.5rem;border-radius:var(--r2);margin-bottom:2rem;position:relative;overflow:hidden;}
.page-hero::before{content:'';position:absolute;inset:0;background-image:repeating-linear-gradient(-60deg,transparent,transparent 44px,rgba(255,255,255,.016) 44px,rgba(255,255,255,.016) 45px),repeating-linear-gradient(30deg,transparent,transparent 44px,rgba(255,255,255,.01) 44px,rgba(255,255,255,.01) 45px);}
.page-hero::after{content:'';position:absolute;bottom:0;left:0;right:0;height:3px;background:linear-gradient(90deg,transparent 0%,var(--gold) 30%,var(--gold-lt) 70%,transparent 100%);}
.hero-inner{position:relative;z-index:2}
.hero-kicker{display:inline-flex;align-items:center;gap:.5rem;background:rgba(184,134,11,.14);border:1px solid rgba(184,134,11,.32);color:var(--gold-lt);font-family:'Source Code Pro',monospace;font-size:.7rem;font-weight:500;letter-spacing:.13em;text-transform:uppercase;padding:5px 14px;border-radius:2px;margin-bottom:1rem;}
.kicker-dot{width:7px;height:7px;background:var(--gold);border-radius:50%;animation:pulse 2s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.3}}
.page-hero h1{font-family:'Merriweather',serif;font-size:clamp(1.6rem,3.5vw,2.4rem);font-weight:900;color:var(--white);letter-spacing:-.025em;line-height:1.15;margin-bottom:.6rem;}
.page-hero h1 .gold{color:var(--gold)}
.page-hero p{font-size:.97rem;font-weight:300;color:rgba(255,255,255,.6);line-height:1.78;max-width:580px;}

/* ── PANEL ── */
.panel{background:var(--white);border:1.5px solid var(--border);border-radius:var(--r2);margin-bottom:1.1rem;overflow:hidden;box-shadow:var(--sh-xs);transition:box-shadow .25s;}
.panel:hover{box-shadow:var(--sh-sm)}
.panel-head{padding:1rem 1.4rem;display:flex;align-items:center;gap:12px;border-bottom:1px solid var(--border);background:var(--off);}
.step-badge{width:26px;height:26px;border-radius:50%;background:var(--p);color:#fff;font-size:11px;font-weight:700;display:flex;align-items:center;justify-content:center;font-family:'Source Code Pro',monospace;flex-shrink:0;}
.ph-title{font-family:'Merriweather',serif;font-size:.98rem;font-weight:700;color:var(--p);line-height:1.2}
.ph-sub{font-size:.78rem;color:var(--muted);margin-top:1px}
.panel-body{padding:1.25rem 1.4rem}

/* ── FORM ── */
.form-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:1.2rem;}
.field{display:flex;flex-direction:column;gap:5px}
.field label{font-size:.7rem;font-weight:700;letter-spacing:.07em;text-transform:uppercase;color:var(--muted);font-family:'Source Code Pro',monospace;}
.field input,.field select{width:100%;padding:.65rem .9rem;background:var(--off);border:1.5px solid var(--border);border-radius:var(--r);font-family:'Lato',sans-serif;font-size:.92rem;color:var(--text);outline:none;transition:border-color .2s,background .2s,box-shadow .2s;}
.field input:focus,.field select:focus{border-color:var(--p);background:var(--white);box-shadow:0 0 0 3px rgba(0,61,107,.1)}
.field input::placeholder{color:var(--bdr-dk)}
.field .hint{font-size:.7rem;color:var(--muted);font-family:'Source Code Pro',monospace;}

/* ── GST RATE BUTTONS ── */
.rate-group{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:.25rem;}
.rate-btn{padding:.45rem .9rem;border:1.5px solid var(--border);border-radius:var(--r);background:var(--off);font-family:'Source Code Pro',monospace;font-size:.8rem;font-weight:700;color:var(--mid);cursor:pointer;transition:all .18s;letter-spacing:.04em;}
.rate-btn:hover{border-color:var(--p);color:var(--p);background:var(--p-tint);}
.rate-btn.active{background:var(--p);color:var(--white);border-color:var(--p);}

/* ── TOGGLE SWITCH ROW ── */
.toggle-row{display:flex;gap:.5rem;margin-top:.25rem;}
.toggle-btn{flex:1;padding:.6rem .5rem;border:1.5px solid var(--border);border-radius:var(--r);background:var(--off);font-family:'Lato',sans-serif;font-size:.82rem;font-weight:700;color:var(--mid);cursor:pointer;transition:all .18s;text-align:center;}
.toggle-btn:hover{border-color:var(--p);color:var(--p);background:var(--p-tint);}
.toggle-btn.active{background:var(--p);color:var(--white);border-color:var(--p);}

/* ── CALC BUTTON ── */
.btn-calc{margin-top:1.5rem;padding:.85rem 2.5rem;background:var(--p);color:#fff;border:none;border-radius:var(--r);font-family:'Lato',sans-serif;font-size:.95rem;font-weight:900;cursor:pointer;transition:all .2s;display:flex;align-items:center;gap:8px;letter-spacing:.02em;box-shadow:0 2px 12px rgba(0,61,107,.25);}
.btn-calc:hover{background:var(--p-mid);transform:translateY(-2px);box-shadow:0 6px 20px rgba(0,61,107,.3)}
.btn-calc:active{transform:translateY(0)}
.btn-reset{margin-top:1rem;padding:.65rem 1.5rem;background:var(--off);color:var(--muted);border:1.5px solid var(--border);border-radius:var(--r);font-family:'Lato',sans-serif;font-size:.85rem;font-weight:700;cursor:pointer;transition:all .2s;}
.btn-reset:hover{border-color:var(--p);color:var(--p);background:var(--p-tint)}
.btn-actions{display:flex;gap:.75rem;flex-wrap:wrap;align-items:center;}

/* ── RESULTS ── */
#results{display:none}
.section-tag{display:inline-flex;align-items:center;gap:.4rem;background:var(--p-tint);color:var(--p);border:1px solid var(--p-tint2);font-family:'Source Code Pro',monospace;font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;padding:4px 12px;border-radius:3px;margin-bottom:1rem;}

/* ── RESULT TABLE ── */
.result-table{width:100%;border-collapse:collapse;font-size:.88rem;}
.result-table th{background:var(--off2);color:var(--p);padding:.7rem 1rem;text-align:left;font-family:'Source Code Pro',monospace;font-size:.7rem;letter-spacing:.07em;text-transform:uppercase;font-weight:700;border-bottom:2px solid var(--border);}
.result-table td{padding:.7rem 1rem;border-bottom:1px solid var(--border);color:var(--text);}
.result-table tr:last-child td{border-bottom:none}
.result-table tr:hover td{background:var(--p-tint)}
.result-table td.amount{font-family:'Source Code Pro',monospace;font-weight:600;text-align:right;}
.total-row td{font-weight:700;background:var(--p-tint)!important;border-top:2px solid var(--p-tint2)!important;color:var(--p)!important;font-size:.95rem;}

/* ── SUMMARY BOXES ── */
.summary-boxes{display:grid;grid-template-columns:repeat(auto-fill,minmax(155px,1fr));gap:1rem;margin-top:1.5rem;}
.summary-box{background:var(--off);border:1.5px solid var(--border);border-radius:var(--r2);padding:1rem 1.2rem;text-align:center;position:relative;overflow:hidden;}
.summary-box::after{content:'';position:absolute;bottom:0;left:0;right:0;height:3px;background:var(--gold);border-radius:0 0 8px 8px;}
.summary-box .s-label{font-size:.62rem;font-family:'Source Code Pro',monospace;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin-bottom:.4rem;}
.summary-box .s-value{font-family:'Merriweather',serif;font-size:clamp(.95rem,3.5vw,1.35rem);font-weight:700;color:var(--p);word-break:break-word;}
.summary-box.cgst::after{background:#0369a1;}
.summary-box.sgst::after{background:#15803d;}
.summary-box.igst::after{background:var(--gst-purple);}
.summary-box.total::after{background:var(--gold);}
.summary-box.cgst .s-value{color:#0369a1;}
.summary-box.sgst .s-value{color:#15803d;}
.summary-box.igst .s-value{color:var(--gst-purple);}
.summary-box.total .s-value{color:var(--p);}

/* ── TRANSACTION TYPE BADGE ── */
.txn-badge{display:inline-flex;align-items:center;gap:.35rem;font-family:'Source Code Pro',monospace;font-size:.68rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;padding:3px 10px;border-radius:2px;margin-bottom:1rem;}
.txn-badge.intra{background:#e0f2fe;color:#0369a1;border:1px solid #bae6fd;}
.txn-badge.inter{background:var(--gst-purple-bg);color:var(--gst-purple);border:1px solid var(--gst-purple-border);}

/* ── NOTE / DISCLAIMER BOXES ── */
.note-box{background:var(--off);border-left:3px solid var(--gold);border-radius:0 var(--r2) var(--r2) 0;padding:.9rem 1.1rem;font-size:.82rem;color:var(--mid);margin-top:1.5rem;line-height:1.72;}
.note-box strong{font-weight:700;color:var(--text)}
.input-note-box{display:flex;align-items:flex-start;gap:.75rem;margin-top:1.5rem;padding:1rem 1.2rem;background:var(--gold-pl);border:1px solid rgba(184,134,11,.3);border-left:3px solid var(--gold);border-radius:0 var(--r2) var(--r2) 0;font-size:.82rem;color:var(--mid);line-height:1.72;}
.input-note-box strong{font-weight:700;color:var(--text)}
.input-note-icon{font-size:1rem;margin-top:1px;flex-shrink:0}

/* ── ABOUT GST SECTION ── */
.about-section{margin-top:2.5rem;}
.about-section h2{font-family:'Merriweather',serif;font-size:1.2rem;font-weight:700;color:var(--p);margin-bottom:1rem;padding-bottom:.5rem;border-bottom:2px solid var(--gold);display:inline-block;}
.about-section h3{font-family:'Merriweather',serif;font-size:.95rem;font-weight:700;color:var(--text);margin:1.4rem 0 .5rem;}
.about-section p{font-size:.9rem;color:var(--mid);line-height:1.78;margin-bottom:.9rem;}
.about-section ul{margin:.5rem 0 .9rem 1.2rem;font-size:.9rem;color:var(--mid);line-height:1.78;}
.about-section ul li{margin-bottom:.35rem;}
.gst-rate-table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:var(--r);border:1px solid var(--border);margin:1rem 0;}
.gst-rate-table{width:100%;border-collapse:collapse;font-size:.85rem;margin:0;min-width:520px;}
.gst-rate-table th{background:var(--p);color:#fff;padding:.6rem 1rem;text-align:left;font-size:.72rem;font-family:'Source Code Pro',monospace;letter-spacing:.06em;text-transform:uppercase;white-space:nowrap;}
.gst-rate-table td{padding:.6rem 1rem;border-bottom:1px solid var(--border);color:var(--mid);vertical-align:top;}
.gst-rate-table tr:last-child td{border-bottom:none;}
.gst-rate-table tr:nth-child(even) td{background:var(--off);}
@media(max-width:600px){
  .gst-rate-table th,.gst-rate-table td{padding:.5rem .7rem;font-size:.78rem;}
  .about-section h2{font-size:1.05rem;}
  .about-section h3{font-size:.88rem;}
}

/* ── DISCLAIMER PANEL ── */
.disclaimer-panel{margin-top:2rem;border:1.5px solid rgba(184,134,11,.4);border-left:4px solid var(--gold);border-radius:var(--r2);background:var(--gold-pl);padding:1.25rem 1.4rem;}
.disclaimer-title{font-family:'Merriweather',serif;font-size:.9rem;font-weight:700;color:var(--gold);margin-bottom:.6rem;}
.disclaimer-text{font-size:.8rem;color:var(--mid);line-height:1.78;}
.disclaimer-text strong{color:var(--text);font-weight:700;}

/* ── RESPONSIVE ── */
@media(max-width:768px){
  nav{padding:0 1.3rem}
  .nav-links{display:none}
  .hamburger{display:flex}
  .topbar{display:none!important}
  body{padding-top:70px}
  footer{padding:2.5rem 1.4rem 1.5rem}
  .footer-grid{grid-template-columns:1fr;gap:2rem}
  .footer-bottom{flex-direction:column;align-items:center;text-align:center}
  .page-wrap{padding:1.5rem 1rem 4rem}
  .page-hero{padding:2rem 1.4rem 1.75rem}
}
@media(max-width:600px){
  .form-grid{grid-template-columns:1fr}
  .btn-calc{width:100%;justify-content:center}
  .summary-boxes{grid-template-columns:1fr 1fr}
}
@media(max-width:480px){
  nav{height:60px}
  .mob-menu{top:60px}
  body{padding-top:60px}
  .page-hero h1{font-size:1.45rem}
  .summary-boxes{grid-template-columns:1fr}
}
.hidden{display:none!important}