/* =========================================================
   InvoiceKart / Free Invoice & Quotation Generator
   Main Stylesheet
   ========================================================= */

:root{
  --navy:#0b1e3d;
  --navy-2:#122a52;
  --blue:#2563eb;
  --blue-dark:#1d4ed8;
  --blue-light:#eaf1ff;
  --gray-bg:#f5f7fa;
  --gray-100:#f1f4f8;
  --gray-200:#e5e9f0;
  --gray-400:#94a3b8;
  --gray-600:#54607a;
  --white:#ffffff;
  --text:#1a2236;
  --success:#16a34a;
  --danger:#dc2626;
  --radius:10px;
  --shadow:0 2px 10px rgba(15,25,60,.08);
  --shadow-lg:0 10px 35px rgba(15,25,60,.12);
  --max:1200px;
  font-size:16px;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--text);
  background:var(--gray-bg);
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--blue);text-decoration:none;}
a:hover{text-decoration:underline;}
h1,h2,h3,h4{line-height:1.25;margin:0 0 .5em;color:var(--navy);}
p{margin:0 0 1em;}
.container{max-width:var(--max);margin:0 auto;padding:0 20px;}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:8px;font-weight:600;font-size:.95rem;
  border:1px solid transparent;cursor:pointer;transition:.15s ease;text-decoration:none;
}
.btn:hover{text-decoration:none;}
.btn-primary{background:var(--blue);color:#fff;}
.btn-primary:hover{background:var(--blue-dark);}
.btn-secondary{background:var(--white);color:var(--navy);border-color:var(--gray-200);}
.btn-secondary:hover{border-color:var(--blue);color:var(--blue);}
.btn-outline{background:transparent;border-color:#fff;color:#fff;}
.btn-outline:hover{background:rgba(255,255,255,.1);}
.btn-success{background:var(--success);color:#fff;}
.btn-danger{background:var(--danger);color:#fff;}
.btn-sm{padding:7px 12px;font-size:.85rem;border-radius:6px;}
.btn-block{width:100%;}
.btn:disabled{opacity:.5;cursor:not-allowed;}

/* ---------- Header ---------- */
.site-header{
  background:var(--navy);position:sticky;top:0;z-index:100;box-shadow:0 1px 0 rgba(255,255,255,.06);
}
.site-header .container{display:flex;align-items:center;justify-content:space-between;height:66px;}
.logo{display:flex;align-items:center;gap:8px;color:#fff;font-weight:800;font-size:1.25rem;letter-spacing:-.02em;}
.logo span{color:#5b9dff;}
.main-nav{display:flex;align-items:center;gap:26px;}
.main-nav a{color:#cfd8ea;font-weight:500;font-size:.93rem;}
.main-nav a:hover{color:#fff;text-decoration:none;}
.main-nav .btn{padding:9px 16px;}
.nav-toggle{display:none;background:none;border:none;color:#fff;font-size:1.6rem;cursor:pointer;}
.header-cta{display:flex;gap:10px;}

@media(max-width:900px){
  .main-nav{
    position:fixed;top:66px;left:0;right:0;bottom:0;background:var(--navy-2);
    flex-direction:column;align-items:flex-start;padding:24px;gap:18px;
    transform:translateX(100%);transition:transform .25s ease;overflow-y:auto;
  }
  .main-nav.open{transform:translateX(0);}
  .nav-toggle{display:block;}
  .header-cta{display:none;}
  .main-nav .header-cta{display:flex;flex-direction:column;width:100%;margin-top:10px;}
  .main-nav .btn{width:100%;}
}

/* ---------- Breadcrumbs ---------- */
.breadcrumbs{font-size:.83rem;color:var(--gray-600);padding:14px 0;}
.breadcrumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px;margin:0;padding:0;}
.breadcrumbs li:not(:last-child)::after{content:"›";margin-left:6px;color:var(--gray-400);}
.breadcrumbs a{color:var(--gray-600);}
.breadcrumbs li[aria-current]{color:var(--navy);font-weight:600;}

/* ---------- Hero ---------- */
.hero{background:linear-gradient(160deg,#0b1e3d,#132a54);color:#fff;padding:64px 0 70px;}
.hero .container{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;}
.hero h1{color:#fff;font-size:2.5rem;margin-bottom:16px;}
.hero p.lead{color:#c7d2e8;font-size:1.1rem;max-width:520px;}
.hero-ctas{display:flex;gap:14px;margin-top:26px;flex-wrap:wrap;}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.hero-badges span{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.15);padding:6px 12px;border-radius:20px;font-size:.8rem;color:#dbe4f7;}
.hero-visual{background:#fff;border-radius:16px;box-shadow:var(--shadow-lg);padding:22px;color:var(--text);}
.hero-visual .mini-invoice-row{display:flex;justify-content:space-between;padding:8px 0;border-bottom:1px dashed var(--gray-200);font-size:.85rem;}
.hero-visual h4{margin-bottom:14px;}
@media(max-width:900px){
  .hero .container{grid-template-columns:1fr;}
  .hero h1{font-size:1.9rem;}
}

/* ---------- Sections ---------- */
section{padding:56px 0;}
.section-head{text-align:center;max-width:680px;margin:0 auto 36px;}
.section-head h2{font-size:1.9rem;}
.section-head p{color:var(--gray-600);}
.bg-white{background:#fff;}

/* ---------- Feature cards ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:20px;}
.feature-card{background:#fff;border:1px solid var(--gray-200);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);}
.feature-card .icon{width:44px;height:44px;border-radius:10px;background:var(--blue-light);display:flex;align-items:center;justify-content:center;font-size:1.4rem;margin-bottom:14px;}
.feature-card h3{font-size:1.05rem;margin-bottom:6px;}
.feature-card p{color:var(--gray-600);font-size:.92rem;margin:0;}

/* ---------- Tools grid on homepage ---------- */
.tools-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:22px;}
.tool-card{background:#fff;border:1px solid var(--gray-200);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);display:flex;flex-direction:column;}
.tool-card h3{margin-bottom:8px;}
.tool-card p{color:var(--gray-600);font-size:.92rem;flex-grow:1;}
.tool-card .btn{margin-top:14px;align-self:flex-start;}

/* ---------- Steps ---------- */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:24px;counter-reset:step;}
.step{background:#fff;border-radius:var(--radius);padding:24px;border:1px solid var(--gray-200);position:relative;}
.step::before{counter-increment:step;content:counter(step);width:32px;height:32px;border-radius:50%;background:var(--blue);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;margin-bottom:12px;}

/* ---------- FAQ ---------- */
.faq{max-width:800px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--gray-200);padding:18px 0;}
.faq-item summary{cursor:pointer;font-weight:600;color:var(--navy);list-style:none;display:flex;justify-content:space-between;align-items:center;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"+";font-size:1.3rem;color:var(--blue);}
.faq-item[open] summary::after{content:"–";}
.faq-item p{margin-top:12px;color:var(--gray-600);}

/* ---------- Content pages (SEO / blog / legal) ---------- */
.content-page{background:#fff;}
.content-wrap{max-width:820px;margin:0 auto;}
.content-wrap h2{margin-top:1.6em;font-size:1.5rem;}
.content-wrap h3{margin-top:1.3em;font-size:1.15rem;}
.content-wrap ul,.content-wrap ol{color:var(--text);padding-left:1.3em;}
.content-wrap li{margin-bottom:.4em;}
.content-wrap table{width:100%;border-collapse:collapse;margin:1.2em 0;font-size:.92rem;}
.content-wrap th,.content-wrap td{border:1px solid var(--gray-200);padding:8px 10px;text-align:left;}
.content-wrap th{background:var(--gray-100);}
.page-hero{background:var(--gray-100);padding:34px 0;border-bottom:1px solid var(--gray-200);}
.page-hero h1{font-size:1.9rem;margin-bottom:8px;}
.page-hero p{color:var(--gray-600);max-width:700px;margin:0;}
.internal-links{background:var(--blue-light);border-radius:var(--radius);padding:22px;margin:30px 0;}
.internal-links h3{margin-top:0;}
.internal-links ul{columns:2;list-style:none;padding:0;}
@media(max-width:600px){.internal-links ul{columns:1;}}
.internal-links li{margin-bottom:8px;}

/* ---------- Blog list ---------- */
.blog-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px;}
.blog-card{background:#fff;border:1px solid var(--gray-200);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);}
.blog-card .tag{font-size:.72rem;text-transform:uppercase;letter-spacing:.05em;color:var(--blue);font-weight:700;}
.blog-card h3{font-size:1.1rem;margin:8px 0;}
.blog-card p{color:var(--gray-600);font-size:.9rem;}

/* ---------- Ad slots ---------- */
.ad-slot{
  background:var(--gray-100);border:1px dashed var(--gray-400);border-radius:8px;
  display:flex;align-items:center;justify-content:center;color:var(--gray-600);
  font-size:.8rem;min-height:90px;margin:24px 0;text-align:center;padding:10px;
}
.ad-slot.ad-header{min-height:60px;}
.ad-slot.ad-sidebar{min-height:250px;}

/* ---------- Footer ---------- */
.site-footer{background:var(--navy);color:#b9c4dc;padding:50px 0 24px;margin-top:40px;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;}
.footer-grid h4{color:#fff;font-size:.95rem;margin-bottom:14px;}
.footer-grid ul{list-style:none;padding:0;margin:0;}
.footer-grid li{margin-bottom:9px;}
.footer-grid a{color:#b9c4dc;font-size:.88rem;}
.footer-grid a:hover{color:#fff;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:34px;padding-top:20px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:.82rem;}
@media(max-width:800px){.footer-grid{grid-template-columns:1fr 1fr;}}

/* =========================================================
   APP / TOOL STYLES (Invoice & Quotation Generator)
   ========================================================= */
.app-shell{background:var(--gray-bg);padding:26px 0 70px;}
.app-header-bar{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;margin-bottom:20px;}
.app-header-bar h1{font-size:1.5rem;margin:0;}
.app-toolbar{display:flex;gap:10px;flex-wrap:wrap;}
.storage-note{background:#fff7e6;border:1px solid #f4d998;color:#7a5a00;padding:10px 14px;border-radius:8px;font-size:.85rem;margin-bottom:18px;}

.app-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px;align-items:start;}
@media(max-width:1080px){.app-grid{grid-template-columns:1fr;}}

.form-panel{background:#fff;border:1px solid var(--gray-200);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);}
.form-panel h2{font-size:1.1rem;border-bottom:1px solid var(--gray-200);padding-bottom:10px;margin-bottom:16px;}
.form-section{margin-bottom:26px;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:12px;}
.form-row.single{grid-template-columns:1fr;}
.form-row.three{grid-template-columns:1fr 1fr 1fr;}
@media(max-width:520px){.form-row,.form-row.three{grid-template-columns:1fr;}}
label{display:block;font-size:.82rem;font-weight:600;color:var(--navy);margin-bottom:5px;}
input[type=text],input[type=email],input[type=tel],input[type=number],input[type=date],input[type=url],select,textarea{
  width:100%;padding:9px 11px;border:1px solid var(--gray-200);border-radius:7px;font-size:.9rem;
  font-family:inherit;background:#fff;color:var(--text);
}
input:focus,select:focus,textarea:focus{outline:2px solid var(--blue);outline-offset:1px;border-color:var(--blue);}
textarea{resize:vertical;min-height:64px;}
.file-input{border:1px dashed var(--gray-400);border-radius:8px;padding:14px;text-align:center;font-size:.85rem;color:var(--gray-600);cursor:pointer;}

.items-table{width:100%;border-collapse:collapse;font-size:.85rem;margin-top:10px;}
.items-table th{text-align:left;font-size:.72rem;text-transform:uppercase;color:var(--gray-600);padding:6px 4px;border-bottom:2px solid var(--gray-200);}
.items-table td{padding:6px 4px;vertical-align:top;border-bottom:1px solid var(--gray-100);}
.items-table input{padding:6px 8px;font-size:.83rem;}
.item-remove{background:none;border:none;color:var(--danger);cursor:pointer;font-size:1.1rem;}

.totals-box{margin-top:16px;border-top:2px solid var(--gray-200);padding-top:12px;}
.totals-row{display:flex;justify-content:space-between;padding:5px 0;font-size:.92rem;}
.totals-row.grand{font-size:1.15rem;font-weight:800;color:var(--navy);border-top:1px solid var(--gray-200);margin-top:6px;padding-top:10px;}

.preview-panel{position:sticky;top:86px;}
.preview-wrap{background:#fff;border:1px solid var(--gray-200);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;}
.preview-actions{display:flex;gap:10px;flex-wrap:wrap;padding:14px;border-bottom:1px solid var(--gray-200);}
.preview-scroll{max-height:78vh;overflow:auto;background:#e9edf5;padding:18px;}

/* Invoice / Quotation printable document */
.doc-sheet{
  width:794px;max-width:100%;min-height:1000px;background:#fff;margin:0 auto;
  padding:40px;color:#1a2236;font-size:13px;box-shadow:0 4px 20px rgba(0,0,0,.12);
}
.doc-head{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:26px;gap:20px;}
.doc-head .biz-logo{max-height:64px;max-width:180px;margin-bottom:10px;object-fit:contain;}
.doc-head .biz-name{font-size:1.3rem;font-weight:800;color:var(--navy);}
.doc-head .doc-title{text-align:right;}
.doc-title .doc-type{font-size:1.7rem;font-weight:800;letter-spacing:.03em;color:var(--navy);}
.doc-meta-table{margin-top:10px;font-size:12.5px;}
.doc-meta-table td{padding:2px 0;}
.doc-meta-table td:first-child{color:#667;padding-right:10px;}
.doc-parties{display:flex;justify-content:space-between;gap:24px;margin:22px 0;padding:16px 0;border-top:1px solid #e5e9f0;border-bottom:1px solid #e5e9f0;}
.doc-parties .party h4{font-size:.72rem;text-transform:uppercase;letter-spacing:.05em;color:#8390a8;margin-bottom:6px;}
.doc-parties .party p{margin:0;line-height:1.5;}
.doc-items{width:100%;border-collapse:collapse;margin:18px 0;font-size:12.5px;}
.doc-items th{background:var(--navy);color:#fff;padding:8px 6px;text-align:left;font-weight:600;}
.doc-items td{padding:7px 6px;border-bottom:1px solid #eef1f6;}
.doc-items tr:last-child td{border-bottom:none;}
.doc-totals{display:flex;justify-content:flex-end;margin-top:8px;}
.doc-totals table{min-width:280px;font-size:12.5px;}
.doc-totals td{padding:4px 6px;}
.doc-totals td:last-child{text-align:right;}
.doc-totals .grand td{font-weight:800;font-size:1.05rem;border-top:2px solid var(--navy);padding-top:8px;color:var(--navy);}
.doc-footer{display:flex;justify-content:space-between;gap:24px;margin-top:30px;padding-top:18px;border-top:1px solid #e5e9f0;font-size:12px;color:#4a5568;}
.doc-footer h5{font-size:.72rem;text-transform:uppercase;color:#8390a8;margin:0 0 6px;}
.doc-qr{text-align:center;}
.doc-qr canvas,.doc-qr img{margin:0 auto;}
.doc-sign{margin-top:50px;text-align:right;font-size:12px;color:#4a5568;}

/* Template skins */
.tpl-classic .doc-items th{background:#0b1e3d;}
.tpl-modern .doc-items th{background:#2563eb;}
.tpl-modern .doc-head{border-bottom:4px solid #2563eb;padding-bottom:16px;}
.tpl-minimal .doc-items th{background:#fff;color:#111;border-bottom:2px solid #111;}
.tpl-minimal .doc-head .doc-type{color:#111;}
.tpl-colorful .doc-items th{background:#0ea5a4;}
.tpl-colorful .doc-title .doc-type{color:#0ea5a4;}
.tpl-corporate .doc-items th{background:#334155;}
.tpl-corporate .doc-sheet{border-top:8px solid #334155;}
.tpl-elegant .doc-items th{background:#111827;}
.tpl-elegant .doc-head .biz-name{font-family:Georgia,serif;}

@media print{
  body *{visibility:hidden;}
  #printArea,#printArea *{visibility:visible;}
  #printArea{position:absolute;top:0;left:0;width:100%;}
  .doc-sheet{box-shadow:none;margin:0;width:100%;}
}

/* Template chooser */
.tpl-picker{display:flex;gap:10px;overflow-x:auto;padding-bottom:6px;}
.tpl-option{flex:0 0 auto;border:2px solid var(--gray-200);border-radius:8px;padding:8px;cursor:pointer;font-size:.72rem;text-align:center;width:78px;background:#fff;}
.tpl-option.active{border-color:var(--blue);background:var(--blue-light);}
.tpl-swatch{height:44px;border-radius:5px;margin-bottom:6px;}
.swatch-classic{background:linear-gradient(#0b1e3d 30%,#fff 30%);}
.swatch-modern{background:linear-gradient(#2563eb 30%,#fff 30%);}
.swatch-minimal{background:linear-gradient(#fff 30%,#fff 30%);border:1px solid #ccc;}
.swatch-colorful{background:linear-gradient(#0ea5a4 30%,#fff 30%);}
.swatch-corporate{background:linear-gradient(#334155 30%,#fff 30%);}
.swatch-elegant{background:linear-gradient(#111827 30%,#fff 30%);}

.add-item-btn{margin-top:8px;}
.gst-mode-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;}
@media(max-width:520px){.gst-mode-grid{grid-template-columns:1fr 1fr;}}
.radio-card{border:1px solid var(--gray-200);border-radius:7px;padding:8px 10px;font-size:.8rem;cursor:pointer;display:flex;align-items:center;gap:6px;}
.radio-card input{width:auto;margin:0;}

.toast{position:fixed;bottom:20px;right:20px;background:var(--navy);color:#fff;padding:12px 18px;border-radius:8px;font-size:.88rem;box-shadow:var(--shadow-lg);opacity:0;transform:translateY(10px);transition:.25s;pointer-events:none;z-index:999;}
.toast.show{opacity:1;transform:translateY(0);}

.affiliate-cta{background:linear-gradient(135deg,#eaf1ff,#f5f7fa);border:1px solid var(--gray-200);border-radius:var(--radius);padding:22px;display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;margin:24px 0;}
.affiliate-cta h4{margin:0 0 4px;}
.affiliate-cta p{margin:0;color:var(--gray-600);font-size:.88rem;}

.error-page{text-align:center;padding:90px 20px;}
.error-page h1{font-size:5rem;color:var(--blue);margin-bottom:0;}