/* ============================================================
   DominateTools · Invoice Generator — Premium Light UI
   Accent hue 262 (indigo-blue). Shared by the root tool AND the
   pSEO subpages (freelance / consultant / designer / handyman),
   which reuse this class vocabulary and consume the var aliases
   below. Restyle, never rename.

   NOTE: the #invoicePreview (.invoice-a4) subtree uses plain hex
   colors ON PURPOSE — html2canvas (bundled in html2pdf) cannot
   parse oklch(), so the printable document must stay hex/rgb or
   the exported PDF renders blank/black.
   ============================================================ */
:root{
  --ink:oklch(24% .02 264);
  --muted:oklch(52% .03 264);
  --paper:oklch(97% .008 264);
  --surface:oklch(100% .002 264);
  --line:oklch(90% .015 264);
  --accent:oklch(54% .17 262);
  --accent-dark:oklch(44% .15 262);
  --accent-soft:oklch(94% .04 262);
  /* aliases consumed by pSEO subpage inline styles — keep these */
  --heading:var(--ink);
  --primary:var(--accent-dark);
  --border:var(--line);
  --radius:16px;
  --radius-sm:11px;
  --shadow-sm:0 1px 2px oklch(24% .04 264 / .06);
  --shadow:0 12px 30px oklch(24% .05 264 / .08);
  --shadow-lg:0 24px 60px oklch(24% .06 264 / .12);
  --ease:cubic-bezier(.16,1,.3,1);
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  color:var(--ink);
  font-synthesis:none;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--paper);color:var(--ink);font-size:16px;line-height:1.55;overflow-x:hidden;-webkit-font-smoothing:antialiased}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
a{color:inherit}
img{max-width:100%}
.hidden{display:none!important}

/* --- Header / nav --- */
.site-header{background:var(--surface);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:30}
.site-header .dt-container{min-height:74px;display:flex;align-items:center;gap:32px}
.logo{font-size:18px;font-weight:900;letter-spacing:-.04em;text-decoration:none;color:var(--ink)}
.logo span{color:var(--accent)}
.site-header nav{display:flex;gap:24px;margin-left:auto;font-size:14px;color:var(--muted)}
.site-header nav a{text-decoration:none;transition:color .18s}
.site-header nav a:hover{color:var(--accent-dark)}

/* --- Layout --- */
.dt-container{max-width:1200px;margin:auto;padding:0 clamp(16px,5vw,72px)}
.dt-main-content{padding-bottom:80px}

/* --- Hero --- */
.dt-hero{padding:64px 0 40px}
.dt-badge{display:inline-flex;align-items:center;gap:8px;text-transform:uppercase;letter-spacing:.1em;font-size:11px;font-weight:850;padding:7px 14px;border-radius:999px}
.dt-badge-primary{color:var(--accent-dark);background:var(--accent-soft)}
.dt-title-xl{font-size:clamp(40px,6.5vw,76px);line-height:1;letter-spacing:-.055em;margin:18px 0;text-wrap:balance;max-width:15ch;font-weight:800}
.dt-gradient-text{background:linear-gradient(120deg,var(--accent),var(--accent-dark));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.dt-subtitle-lg{max-width:660px;color:var(--muted);font-size:18px;line-height:1.6}

/* --- Spacing / text utilities (reused by pSEO subpages) --- */
.dt-mt-2{margin-top:12px}
.dt-mt-4{margin-top:20px}
.dt-mt-6{margin-top:28px}
.dt-mt-12{margin-top:56px}
.dt-mb-12{margin-bottom:56px}
.dt-mb-16{margin-bottom:72px}
.dt-text-xs{font-size:12px;line-height:1.5}
.dt-text-muted{color:var(--muted)}
.text-center{text-align:center}
.dt-divider{height:1px;background:var(--line);margin:20px 0}
.dt-flex-between{display:flex;align-items:center;justify-content:space-between;gap:12px}

/* --- Buttons --- */
.dt-btn-primary,.dt-btn-secondary{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 20px;border-radius:var(--radius-sm);font-size:15px;font-weight:750;letter-spacing:-.01em;border:1px solid transparent;transition:transform .2s var(--ease),box-shadow .2s,background .18s,border-color .18s}
.dt-btn-primary{background:var(--accent);color:#fff;box-shadow:0 8px 20px oklch(54% .17 262 / .28)}
.dt-btn-primary:hover{transform:translateY(-2px);background:var(--accent-dark);box-shadow:0 14px 30px oklch(54% .17 262 / .34)}
.dt-btn-secondary{background:var(--surface);color:var(--ink);border-color:var(--line)}
.dt-btn-secondary:hover{transform:translateY(-2px);border-color:var(--accent);background:var(--accent-soft);color:var(--accent-dark)}
.dt-btn-full{width:100%}
.dt-btn-icon{flex:none;width:34px;height:34px;min-height:34px;display:inline-flex;align-items:center;justify-content:center;font-size:20px;line-height:1;border-radius:9px;border:1px solid var(--line);background:var(--surface);color:var(--muted);transition:background .18s,color .18s,border-color .18s}
.dt-btn-icon:hover{border-color:oklch(62% .19 24);color:oklch(55% .2 24);background:oklch(96% .03 24)}

/* --- Tool section / grid --- */
.dt-tool-section{padding-top:8px}
.invoice-grid{display:grid;grid-template-columns:minmax(0,420px) minmax(0,1fr);gap:24px;align-items:start}

/* --- Control panel (card) --- */
.dt-glass-panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.control-panel{padding:24px;position:sticky;top:98px}
.form-section h3.dt-label-sm,.dt-label-sm{font-size:11px;text-transform:uppercase;letter-spacing:.09em;color:var(--muted);font-weight:850}
.form-section>label.dt-label-sm{display:block;margin-bottom:6px}

/* --- Inputs --- */
.dt-input,.dt-input-sm,.dt-textarea,.dt-select-sm{width:100%;border:1px solid var(--line);border-radius:10px;background:var(--paper);color:var(--ink);transition:border-color .18s,box-shadow .18s,background .18s}
.dt-input{min-height:46px;padding:0 14px;font-size:16px}
.dt-textarea{min-height:76px;padding:11px 14px;font-size:15px;resize:vertical;line-height:1.5}
.dt-input-sm{min-height:42px;padding:0 12px;font-size:15px}
.dt-select-sm{min-height:38px;padding:0 10px;font-size:13px;font-weight:700;width:auto}
.dt-input:focus,.dt-input-sm:focus,.dt-textarea:focus,.dt-select-sm:focus{outline:none;border-color:var(--accent);background:var(--surface);box-shadow:0 0 0 4px var(--accent-soft)}

/* --- Company header row / logo upload / meta --- */
.logo-upload{display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:0 14px;border:1px dashed var(--line);border-radius:10px;font-size:13px;font-weight:700;color:var(--accent-dark);background:var(--accent-soft);cursor:pointer;transition:border-color .18s,transform .18s var(--ease)}
.logo-upload::before{content:"↑";font-weight:900}
.logo-upload:hover{border-color:var(--accent);transform:translateY(-1px)}
.invoice-meta{display:flex;flex-direction:column;gap:8px;flex:1;min-width:0;max-width:190px}
.currency-selector{flex:none}

/* --- Line items --- */
.items-list{display:flex;flex-direction:column;gap:8px}
.item-row{display:grid;grid-template-columns:minmax(0,1fr) 62px 82px 34px;gap:8px;align-items:center}
.item-row .dt-input-sm{min-height:44px}
.remove-item{flex:none;width:34px;height:44px;display:inline-flex;align-items:center;justify-content:center;font-size:20px;line-height:1;border-radius:9px;border:1px solid var(--line);background:var(--surface);color:var(--muted);transition:background .18s,color .18s,border-color .18s}
.remove-item:hover{border-color:oklch(62% .19 24);color:oklch(55% .2 24);background:oklch(96% .03 24)}

/* --- Signature pad --- */
.signature-section .dt-label-sm{display:block;margin-bottom:8px}
.signature-pad-wrapper{position:relative;border:1px solid var(--line);border-radius:10px;background:var(--paper);overflow:hidden}
.signature-pad-wrapper canvas{display:block;width:100%;height:100px;touch-action:none;cursor:crosshair}
.signature-pad-wrapper .dt-btn-icon{position:absolute;top:6px;right:6px;width:28px;height:28px;min-height:28px;font-size:16px;background:var(--surface)}

/* --- Preview panel --- */
.preview-panel{position:relative}
.preview-scroll{overflow-x:auto;padding:4px;border-radius:var(--radius);-webkit-overflow-scrolling:touch}

/* ============================================================
   Printable invoice document (.invoice-a4) — HEX / RGB ONLY.
   Must stay clean and professional on white and capture correctly
   with html2canvas (no oklch anywhere inside this subtree).
   ============================================================ */
.invoice-a4{width:100%;max-width:794px;min-height:1040px;margin:0 auto;background:#ffffff;color:#1b1d29;border:1px solid #e6e8f0;border-radius:14px;box-shadow:0 24px 60px rgba(30,34,54,.14);overflow:hidden}
.invoice-content{padding:clamp(24px,4.4vw,52px)}
.inv-header{display:flex;justify-content:space-between;align-items:flex-start;gap:24px;padding-bottom:24px;border-bottom:2px solid #eef0f6}
.inv-logo-area{max-width:50%}
.inv-logo-area img{max-height:80px;max-width:220px;object-fit:contain}
.logo-placeholder{display:flex;align-items:center;justify-content:center;width:150px;height:70px;border:2px dashed #cfd3e2;border-radius:10px;color:#9aa0b4;font-size:13px;font-weight:700}
.inv-title{text-align:right}
.inv-title h1{font-size:34px;font-weight:800;letter-spacing:-.04em;color:#3730b8;line-height:1;margin-bottom:8px}
.inv-title p{color:#5c6178;font-size:13px;line-height:1.5}
.inv-addresses{display:flex;justify-content:space-between;gap:32px;padding:26px 0}
.inv-addresses .label,.inv-summary .label{display:block;font-size:10px;text-transform:uppercase;letter-spacing:.12em;font-weight:800;color:#9096ad;margin-bottom:6px}
.inv-addresses h4{font-size:16px;font-weight:750;color:#1b1d29;margin-bottom:4px}
.inv-addresses p{font-size:13px;line-height:1.6;color:#5c6178;white-space:pre-line}
.addr-to{text-align:right}
.inv-table{width:100%;border-collapse:collapse;margin-top:6px}
.inv-table thead th{background:#f4f5fb;color:#4a4f66;font-size:11px;text-transform:uppercase;letter-spacing:.06em;font-weight:800;text-align:left;padding:11px 14px}
.inv-table thead th:nth-child(2),.inv-table thead th:nth-child(3),.inv-table thead th:nth-child(4){text-align:right}
.inv-table tbody td{padding:12px 14px;font-size:14px;color:#2c2f42;border-bottom:1px solid #eef0f6}
.inv-table tbody td:nth-child(2),.inv-table tbody td:nth-child(3),.inv-table tbody td:nth-child(4){text-align:right;font-variant-numeric:tabular-nums}
.inv-summary{display:flex;justify-content:space-between;gap:32px;margin-top:28px}
.notes-area{max-width:52%}
.notes-area p{font-size:13px;color:#5c6178;line-height:1.6;white-space:pre-line}
.totals-area{min-width:240px;flex:none}
.total-row{display:flex;justify-content:space-between;gap:24px;padding:9px 0;font-size:14px;color:#4a4f66;border-bottom:1px solid #eef0f6}
.total-row span:last-child{font-weight:600;color:#1b1d29;font-variant-numeric:tabular-nums}
.total-row.grand-total{margin-top:6px;border-bottom:none;background:#f4f5fb;border-radius:10px;padding:14px 16px;font-size:17px;font-weight:800;color:#1b1d29}
.total-row.grand-total span:last-child{color:#3730b8;font-weight:800}
.inv-footer{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-top:40px;padding-top:22px;border-top:1px solid #eef0f6}
.footer-text p{font-size:12px;color:#7a8098}
.signature-area{text-align:center;min-width:180px}
.signature-area img{max-height:60px;margin:0 auto 4px;display:block}
.signature-line{height:1px;background:#c2c7d6;margin-top:22px}
.signature-area p{font-size:12px;color:#7a8098;margin-top:6px}

/* --- Educational content --- */
.educational-content{padding:clamp(28px,4vw,48px)}
.content-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.article h2{font-size:clamp(22px,2.6vw,30px);line-height:1.1;letter-spacing:-.03em;margin-bottom:14px;text-wrap:balance;color:var(--ink)}
.article h3{font-size:18px;letter-spacing:-.02em;margin-bottom:10px;color:var(--ink)}
.article p{color:var(--muted);line-height:1.75;margin-bottom:12px}
.article strong{color:var(--ink);font-weight:700}
.article ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.article li{position:relative;padding-left:26px;color:var(--muted);line-height:1.6}
.article li::before{content:"";position:absolute;left:0;top:8px;width:14px;height:14px;border-radius:5px;background:var(--accent-soft);border:1px solid var(--accent)}
.tip-box{margin-top:18px;padding:16px 18px;border-radius:12px;background:var(--accent-soft);border:1px solid oklch(88% .05 262);color:var(--ink);font-size:14px;line-height:1.65}
.tip-box strong{color:var(--accent-dark)}

/* --- FAQ --- */
.faq-section{max-width:820px}
.faq-heading{font-size:clamp(24px,3.2vw,34px);letter-spacing:-.04em;margin-bottom:20px;text-wrap:balance;color:var(--ink)}
.faq-list{display:flex;flex-direction:column;gap:10px}
.faq-item{border:1px solid var(--line);border-radius:12px;background:var(--surface);padding:0 18px;transition:border-color .18s,box-shadow .18s}
.faq-item[open]{border-color:var(--accent);box-shadow:var(--shadow-sm)}
.faq-item summary{list-style:none;cursor:pointer;font-weight:700;letter-spacing:-.01em;padding:16px 0;display:flex;justify-content:space-between;align-items:center;gap:16px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:22px;font-weight:400;color:var(--accent);transition:transform .2s var(--ease)}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item p{color:var(--muted);line-height:1.7;padding:0 0 16px;max-width:70ch}

/* --- Related --- */
.related-section{margin-top:8px}
.related-heading{font-size:14px;text-transform:uppercase;letter-spacing:.09em;color:var(--muted);margin-bottom:16px}
.related-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}
.related-card{display:flex;align-items:center;min-height:56px;padding:16px 18px;border:1px solid var(--line);border-radius:13px;background:var(--surface);text-decoration:none;font-weight:700;font-size:14px;transition:transform .18s var(--ease),border-color .18s,color .18s}
.related-card:hover{transform:translateY(-2px);border-color:var(--accent);color:var(--accent-dark)}

/* --- Footer --- */
.site-footer{border-top:1px solid var(--line);background:var(--surface);padding:28px 0;color:var(--muted);font-size:13px;text-align:center}
.site-footer a{color:var(--accent-dark);text-decoration:none;font-weight:600}

/* --- Accessibility --- */
:focus-visible{outline:3px solid var(--accent);outline-offset:3px;border-radius:4px}

/* --- Scrollbars (light, accent-tinted) --- */
*{scrollbar-width:thin;scrollbar-color:oklch(70% .1 262 / .55) transparent}
::-webkit-scrollbar{width:9px;height:9px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:oklch(70% .1 262 / .5);border-radius:10px;border:2px solid var(--paper)}
::-webkit-scrollbar-thumb:hover{background:oklch(60% .13 262 / .7)}

/* --- Print --- */
@media print{
  .no-print{display:none!important}
  body{background:#fff}
  .preview-scroll{overflow:visible;padding:0}
  .invoice-a4{max-width:none;width:100%;min-height:auto;border:none;box-shadow:none;border-radius:0}
  .dt-main-content{padding:0}
}

/* --- Responsive --- */
@media(max-width:1080px){
  .content-grid{grid-template-columns:1fr;gap:28px}
}
@media(max-width:900px){
  .invoice-grid{grid-template-columns:1fr}
  .control-panel{position:static}
  .dt-hero{padding:48px 0 28px}
  .preview-scroll{padding:0}
}
@media(max-width:640px){
  .site-header .dt-container{min-height:62px;gap:16px}
  .site-header nav{display:none}
  .control-panel,.educational-content{padding:18px}
  .dt-glass-panel{border-radius:14px}
  /* keep form controls at 16px so mobile browsers don't auto-zoom */
  .dt-input,.dt-input-sm,.dt-textarea,.item-row .dt-input-sm{font-size:16px}
  .dt-flex-between{flex-wrap:wrap}
  .invoice-meta{max-width:none}
  .item-row{grid-template-columns:minmax(0,1fr) 56px 74px 32px;gap:6px}
  .inv-title h1{font-size:26px}
  .inv-summary,.inv-footer,.inv-addresses{flex-direction:column;gap:18px}
  .addr-to{text-align:left}
  .notes-area{max-width:none}
  .totals-area{min-width:0;width:100%}
}

/* --- Reduced motion (MUST be last) --- */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important}
}