/* ==========================================================================
   M-Tax Marek Grzybowski — design system
   Palette drawn from the logo: charcoal ink + brick-red rule.
   Serif for headlines (trust/authority), sans for UI, mono for figures
   (a bookkeeping practice is, literally, a practice of numbers).
   ========================================================================== */

:root{
  --ink:        #221E1B;
  --ink-soft:   #55504A;
  --ink-faint:  #86807A;
  --paper:      #F6F3EE;
  --paper-alt:  #EEE8DE;
  --white:      #FFFFFF;
  --brick:      #8C2A24;
  --brick-dark: #6C1F1B;
  --brick-tint: #F3E4E1;
  --gold:       #A2843F;
  --line:       #DCD3C3;
  --line-soft:  #E8E1D3;
  --focus:      #2563a8;

  --font-serif: 'Source Serif 4', Georgia, 'Times New Roman', serif;
  --font-sans:  'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono:  'IBM Plex Mono', 'SFMono-Regular', Consolas, monospace;

  --maxw: 1180px;
  --gutter: clamp(20px, 5vw, 64px);
  --radius: 2px;
  --header-h: 84px;
}

*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; scroll-padding-top: var(--header-h); }

body{
  margin:0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img{ max-width:100%; display:block; }
a{ color: var(--brick); text-decoration: none; }
a:hover{ color: var(--brick-dark); }
ul{ margin:0; padding:0; list-style:none; }
button{ font-family: inherit; }

:focus-visible{
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

h1,h2,h3,h4{
  font-family: var(--font-serif);
  color: var(--ink);
  font-weight: 600;
  line-height: 1.2;
  margin: 0 0 .5em;
}
h1{ font-size: clamp(2.1rem, 4.2vw, 3.4rem); font-weight: 500; }
h2{ font-size: clamp(1.6rem, 2.6vw, 2.2rem); }
h3{ font-size: 1.3rem; }
p{ margin: 0 0 1em; max-width: 68ch; }
p.lead{ font-size: 1.15rem; color: var(--ink-soft); }

.mono{ font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

.container{
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.section{ padding: clamp(48px, 8vw, 96px) 0; }
.section-alt{ background: var(--paper-alt); }
.section-ink{ background: var(--ink); color: #EFE9DF; }
.section-ink h1, .section-ink h2, .section-ink h3{ color: #FBF9F5; }
.section-ink p{ color: #C9C2B6; }
.section-ink a{ color: #E7B9AF; }

.section-head{ max-width: 62ch; margin-bottom: 2.5rem; }
.rule{
  width: 56px; height: 3px; background: var(--brick);
  border: 0; margin: 0 0 1.1rem;
}
.section-head .rule{ margin-top: .5rem; }

.center{ text-align:center; margin-left:auto; margin-right:auto; }
.center .rule{ margin-left:auto; margin-right:auto; }

/* ---- buttons ---- */
.btn{
  display:inline-flex; align-items:center; gap:.5em;
  font-family: var(--font-sans); font-weight:600; font-size: .96rem;
  padding: .85em 1.6em;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor:pointer;
  transition: background-color .15s ease, color .15s ease, border-color .15s ease;
}
.btn-primary{ background: var(--brick); color:#fff; }
.btn-primary:hover{ background: var(--brick-dark); color:#fff; }
.btn-ghost{ background: transparent; color: var(--ink); border-color: var(--ink); }
.btn-ghost:hover{ background: var(--ink); color: var(--paper); }
.btn-ghost-light{ background: transparent; color:#fff; border-color: rgba(255,255,255,.55); }
.btn-ghost-light:hover{ background:#fff; color: var(--ink); }
.btn-row{ display:flex; gap: .9rem; flex-wrap:wrap; margin-top: 1.6rem; }

/* ==========================================================================
   Header / nav
   ========================================================================== */
.site-header{
  position: sticky; top:0; z-index: 500;
  background: rgba(246,243,238,.92);
  backdrop-filter: saturate(140%) blur(6px);
  border-bottom: 1px solid var(--line);
  height: var(--header-h);
}
.site-header .container{
  height:100%; display:flex; align-items:center; justify-content:space-between; gap: 1.5rem;
}
.brand{ display:flex; align-items:center; gap:.7rem; flex-shrink:0; }
.brand img{ height: 60px; width:auto; }
.brand-text{ font-family: var(--font-sans); font-weight:600; font-size:.82rem; color: var(--ink-soft); line-height:1.3; display:none; }

.nav-main{ display:flex; align-items:center; gap: 1.9rem; }
.nav-main a{
  font-size: .95rem; color: var(--ink); font-weight:500;
  padding: .3rem 0; border-bottom: 2px solid transparent;
}
.nav-main a:hover, .nav-main a.active{ border-bottom-color: var(--brick); color: var(--ink); }

.nav-item-drop{ position:relative; }
.nav-drop{
  position:absolute; top: calc(100% + 14px); left: 50%; transform: translateX(-50%);
  background: var(--white); border: 1px solid var(--line); box-shadow: 0 12px 28px rgba(34,30,27,.12);
  min-width: 260px; padding: .5rem; opacity:0; visibility:hidden; transform-origin: top center;
  transition: opacity .15s ease, visibility .15s ease;
}
.nav-item-drop:hover .nav-drop, .nav-item-drop:focus-within .nav-drop{ opacity:1; visibility:visible; }
.nav-drop a{ display:block; padding: .6rem .7rem; border-bottom:0; font-size:.92rem; }
.nav-drop a:hover{ background: var(--paper-alt); }

.header-right{ display:flex; align-items:center; gap: 1.1rem; }
.header-phone{ display:flex; align-items:center; gap:.4rem; font-family: var(--font-mono); font-size:.92rem; color: var(--ink-soft); white-space:nowrap; }
.header-phone svg{ width:15px; height:15px; flex-shrink:0; }

.lang-switch{ display:flex; border:1px solid var(--ink); border-radius: var(--radius); overflow:hidden; }
.lang-switch button{
  background:transparent; border:0; padding:.4rem .65rem; font-size:.82rem; font-weight:600;
  color: var(--ink-soft); cursor:pointer; font-family: var(--font-mono); letter-spacing:.02em;
}
.lang-switch button.is-active{ background: var(--ink); color: var(--paper); }

.nav-toggle{ display:none; background:none; border:1px solid var(--ink); padding: .5rem .6rem; cursor:pointer; }
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after{
  display:block; width:20px; height:2px; background:var(--ink); position:relative; transition:.2s;
}
.nav-toggle span::before, .nav-toggle span::after{ content:''; position:absolute; left:0; }
.nav-toggle span::before{ top:-6px; } .nav-toggle span::after{ top:6px; }

/* ==========================================================================
   Hero
   ========================================================================== */
.hero{ padding: clamp(56px,9vw,108px) 0 clamp(40px,6vw,72px); }
.hero-grid{
  display:grid; grid-template-columns: 1.25fr .95fr; gap: clamp(28px, 5vw, 72px); align-items:start;
}
.hero h1{ margin-bottom:.4rem; }
.hero .kicker{ font-family: var(--font-mono); font-size:.85rem; letter-spacing:.03em; color: var(--brick); margin-bottom: .9rem; }
.hero .rule{ animation: growline .7s ease forwards; width:0; }
@keyframes growline{ to{ width:56px; } }
.hero p.lead{ margin-top: 1.1rem; }
@media (prefers-reduced-motion: reduce){ .hero .rule{ animation:none; width:56px; } }

.ledger{
  border-top: 3px solid var(--brick);
  background: var(--white);
}
.ledger-row{
  display:flex; justify-content:space-between; gap:1rem;
  padding: 1.1rem 1.3rem; border-bottom: 1px solid var(--line-soft);
}
.ledger-row:last-child{ border-bottom:0; }
.ledger-label{ font-size:.82rem; color: var(--ink-faint); font-family: var(--font-mono); padding-top:.15rem; }
.ledger-value{ font-weight:600; text-align:right; max-width: 60%; }

/* ==========================================================================
   Tiles / service cards — bordered, flat, no shadow, brick top-rule
   ========================================================================== */
.tiles{ display:grid; gap: 1.4rem; }
.tiles-2{ grid-template-columns: repeat(2, 1fr); }
.tiles-3{ grid-template-columns: repeat(3, 1fr); }
.tiles-4{ grid-template-columns: repeat(4, 1fr); }
.tiles-auto{ grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }

.tile{
  border: 1px solid var(--line); border-top: 3px solid var(--brick);
  background: var(--white); padding: 1.8rem 1.6rem;
  display:flex; flex-direction:column; gap:.7rem;
  transition: border-color .15s ease, background-color .15s ease;
}
.tile:hover{ border-color: var(--brick); background: var(--brick-tint); }
.tile h3{ margin-bottom:.1rem; }
.tile .price{ font-family: var(--font-mono); color: var(--brick); font-weight:600; font-size:1.02rem; margin-top:.2rem; }
.tile .tile-link{ margin-top:auto; font-weight:600; font-size:.92rem; }
.tile ul{ margin: .3rem 0 0; }
.tile ul li{ position:relative; padding-left: 1.1rem; margin-bottom:.35rem; font-size:.95rem; color: var(--ink-soft); }
.tile ul li::before{ content:'—'; position:absolute; left:0; color: var(--gold); }

/* Reasons / why-us list */
.reasons{ display:grid; grid-template-columns: repeat(2,1fr); gap: 1.6rem 2.4rem; margin-top: 1.8rem; }
.reason{ display:flex; gap: 1rem; align-items:flex-start; }
.reason-num{ font-family: var(--font-mono); color: var(--brick); font-size: .95rem; padding-top:.2rem; flex-shrink:0; }
.reason h4{ font-family: var(--font-sans); font-size: 1.02rem; font-weight:600; margin:0 0 .3rem; }
.reason p{ margin:0; font-size:.94rem; color: var(--ink-soft); }

/* Numbered process steps (legitimate — genuinely sequential) */
.steps{ counter-reset: step; margin-top: 1.8rem; }
.step{
  display:grid; grid-template-columns: 44px 1fr; gap: 1rem;
  padding: 1.1rem 0; border-top: 1px solid var(--line-soft);
}
.step:last-child{ border-bottom: 1px solid var(--line-soft); }
.step-num{ font-family: var(--font-mono); color: var(--brick); font-size: 1.1rem; }
.step h4{ font-family: var(--font-sans); font-weight:600; font-size:1rem; margin:0 0 .3rem; }
.step p{ margin:0; font-size:.94rem; color: var(--ink-soft); }

/* Pricing ledger table */
.price-table{ width:100%; border-collapse: collapse; margin-top: 1rem; background:var(--white); }
.price-table caption{ caption-side: top; text-align:left; font-family: var(--font-serif); font-size:1.2rem; padding-bottom:.6rem; }
.price-table th, .price-table td{ text-align:left; padding: .8rem 1rem; border-bottom: 1px solid var(--line-soft); font-size:.95rem; }
.price-table thead th{ font-family: var(--font-mono); font-size:.78rem; color: var(--ink-faint); font-weight:600; border-bottom: 2px solid var(--ink); }
.price-table td.num, .price-table th.num{ font-family: var(--font-mono); text-align:right; }
.price-table tr.total td{ font-weight:700; border-top: 2px solid var(--ink); border-bottom:0; }

/* Certificates */
.cert-grid{ display:grid; grid-template-columns: repeat(2, minmax(0,220px)); gap: 1.2rem; margin: 1.6rem 0; }
.cert-card{ border: 1px solid var(--line); background: var(--white); padding: .6rem; }
.cert-card img{ width:100%; border: 1px solid var(--line-soft); }
.cert-card figcaption{ font-size: .82rem; color: var(--ink-soft); margin-top:.5rem; text-align:center; }
.cert-card a{ display:block; }

/* Bio layout */
.bio-grid{ display:grid; grid-template-columns: 1.4fr .9fr; gap: clamp(24px,4vw,56px); align-items:start; }
.bio-photo{ border-top: 3px solid var(--brick); }
.bio-photo figcaption{ font-size:.8rem; color: var(--ink-faint); padding-top:.6rem; }
.credentials{ margin-top: 1.6rem; }
.credentials li{ display:flex; gap: .8rem; padding: .8rem 0; border-top: 1px solid var(--line-soft); font-size:.94rem; }
.credentials li:last-child{ border-bottom: 1px solid var(--line-soft); }
.credentials .yr{ font-family: var(--font-mono); color: var(--brick); flex-shrink:0; width: 3.4em; }

/* ==========================================================================
   Forms
   ========================================================================== */
.field{ margin-bottom: 1.3rem; }
.field label{ display:block; font-weight:600; font-size:.92rem; margin-bottom:.4rem; }
.field .hint{ font-size:.8rem; color: var(--ink-faint); margin-top:.3rem; }
input[type=text], input[type=email], input[type=tel], textarea, select{
  width:100%; padding: .8rem .9rem; font-family: var(--font-sans); font-size: .96rem;
  border: 1px solid var(--line); background: var(--white); color: var(--ink); border-radius: var(--radius);
}
textarea{ min-height: 140px; resize:vertical; }
input:focus, textarea:focus, select:focus{ border-color: var(--brick); }
.checkfield{ display:flex; gap:.6rem; align-items:flex-start; font-size:.86rem; color: var(--ink-soft); }
.checkfield input{ margin-top:.25rem; width:auto; }
.form-status{ margin-top: 1rem; font-size:.92rem; }
.form-status.ok{ color:#2f6e3f; } .form-status.err{ color: var(--brick); }

/* ==========================================================================
   Calculator
   ========================================================================== */
.calc-grid{ display:grid; grid-template-columns: 1.5fr 1fr; gap: clamp(24px,4vw,56px); align-items:start; }
.calc-step{ padding: 1.5rem 0; border-top: 1px solid var(--line-soft); }
.calc-step:first-child{ border-top:0; padding-top:0; }
.calc-step .step-label{ font-family: var(--font-mono); font-size:.8rem; color: var(--brick); margin-bottom:.5rem; }
.calc-step h4{ font-family: var(--font-sans); font-weight:600; margin:0 0 .8rem; font-size:1.02rem; }
.opt-grid{ display:grid; grid-template-columns: repeat(2, 1fr); gap:.6rem; }
.opt{
  border:1px solid var(--line); padding:.7rem .9rem; cursor:pointer; font-size:.9rem;
  display:flex; align-items:center; gap:.6rem; background:var(--white);
}
.opt:hover{ border-color: var(--brick); }
.opt input{ width:auto; margin:0; accent-color: var(--brick); }
.opt.is-checked{ border-color: var(--brick); background: var(--brick-tint); }
.opt.is-disabled{ opacity:.5; pointer-events:none; }
.stepper{ display:flex; align-items:center; gap:.8rem; }
.stepper button{
  width: 36px; height:36px; border:1px solid var(--ink); background:var(--white); font-size:1.1rem; cursor:pointer;
}
.stepper output{ font-family: var(--font-mono); font-size:1.1rem; min-width: 2.4em; text-align:center; }

.calc-summary{
  position: sticky; top: calc(var(--header-h) + 20px);
  background: var(--ink); color: var(--paper); padding: 1.8rem;
  border-top: 3px solid var(--brick);
}
.calc-summary h4{ font-family: var(--font-sans); color:#fff; font-weight:600; font-size:1rem; margin:0 0 1rem; }
.calc-line{ display:flex; justify-content:space-between; font-size:.86rem; padding:.5rem 0; border-bottom: 1px solid rgba(255,255,255,.12); color:#C9C2B6;}
.calc-line span:last-child{ font-family: var(--font-mono); color:#EFE9DF; }
.calc-total{ display:flex; justify-content:space-between; align-items:baseline; margin-top:1rem; padding-top:1rem; border-top:1px solid rgba(255,255,255,.25); }
.calc-total .amount{ font-family: var(--font-mono); font-size:2rem; color:#fff; }
.calc-total .cur{ font-size:.95rem; color:#C9C2B6; margin-left:.3rem; }
.calc-note{ font-size:.78rem; color:#9C9587; margin-top:.9rem; }

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer{ background: var(--ink); color:#C9C2B6; padding: 3.5rem 0 2rem; }
.footer-grid{ display:grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 2rem; margin-bottom: 2.5rem; }
.footer-grid h5{ color:#EFE9DF; font-family: var(--font-sans); font-size:.85rem; letter-spacing:.02em; margin: 0 0 1rem; }
.footer-grid a, .footer-grid p{ color:#B7AFA1; font-size:.9rem; }
.footer-grid ul li{ margin-bottom:.6rem; }
.footer-grid a:hover{ color:#fff; }
.footer-social{ display:flex; gap:.9rem; margin-top:1rem; }
.footer-logo{ display:inline-block; background:#fff; padding:.5rem .9rem; margin-bottom:1rem; border:1px solid #3A342F; }
.footer-logo img{ height:28px; width:auto; display:block; }
.footer-social a{ width:34px; height:34px; border:1px solid #4A443F; display:flex; align-items:center; justify-content:center; }
.footer-social a:hover{ border-color:#B7AFA1; }
.footer-social svg{ width:16px; height:16px; fill:#C9C2B6; }
.footer-bottom{ border-top:1px solid #3A342F; padding-top:1.5rem; display:flex; justify-content:space-between; flex-wrap:wrap; gap:.8rem; font-size:.82rem; color:#8C8578; }

/* Cookie banner */
.cookie-bar{
  position: fixed; left:0; right:0; bottom:0; z-index: 900;
  background: var(--ink); color:#EFE9DF; padding: 1.1rem var(--gutter);
  display:flex; gap:1.4rem; align-items:center; justify-content:space-between; flex-wrap:wrap;
  border-top: 3px solid var(--brick);
  transform: translateY(100%); transition: transform .3s ease;
}
.cookie-bar.is-visible{ transform: translateY(0); }
.cookie-bar p{ margin:0; font-size:.86rem; max-width:70ch; color:#C9C2B6; }
.cookie-bar a{ color:#E7B9AF; }
.cookie-actions{ display:flex; gap:.7rem; flex-shrink:0; }

/* Simple page header (non-home pages) */
.page-header{ padding: clamp(44px,7vw,76px) 0 clamp(28px,4vw,40px); }
.page-header .kicker{ font-family: var(--font-mono); font-size:.85rem; color: var(--brick); margin-bottom:.7rem; }

/* Utility */
.mt-0{ margin-top:0 !important; }
.map-frame{ border:0; width:100%; height: 340px; border-top: 3px solid var(--brick); }
.badge{ display:inline-block; font-family: var(--font-mono); font-size:.76rem; background: var(--paper-alt); border:1px solid var(--line); padding: .3rem .6rem; margin: .2rem .4rem .2rem 0; }
.notice{ border-left:3px solid var(--brick); background: var(--brick-tint); padding: 1rem 1.3rem; font-size:.92rem; color: var(--ink-soft); margin: 1.4rem 0; max-width:70ch; }
.notice strong{ color: var(--ink); }
.two-col{ display:grid; grid-template-columns: 1fr 1fr; gap: clamp(24px,4vw,56px); }

/* ==========================================================================
   Mobile
   ========================================================================== */
@media (max-width: 980px){
  .nav-main{ display:none; }
  .nav-toggle{ display:flex; flex-direction:column; justify-content:center; }
  .brand-text{ display:none; }
  .hero-grid, .bio-grid, .calc-grid, .two-col{ grid-template-columns: 1fr; }
  .tiles-2, .tiles-3, .tiles-4{ grid-template-columns: 1fr 1fr; }
  .reasons{ grid-template-columns: 1fr; }
  .footer-grid{ grid-template-columns: 1fr 1fr; }
  .calc-summary{ position:static; }
  .cert-grid{ grid-template-columns: 1fr 1fr; }
}
@media (max-width: 620px){
  .tiles-2, .tiles-3, .tiles-4, .opt-grid, .footer-grid{ grid-template-columns: 1fr; }
  .header-phone{ display:none; }
  .ledger-value{ max-width: 68%; }
}

/* Mobile dropdown nav panel */
.mobile-nav{
  position: fixed; inset: var(--header-h) 0 0 0; background: var(--paper);
  z-index: 400; padding: 1.5rem var(--gutter); overflow-y:auto;
  display:none;
}
.mobile-nav.is-open{ display:block; }
.mobile-nav a{ display:block; padding: .9rem 0; border-bottom: 1px solid var(--line); font-size:1.05rem; color: var(--ink); font-weight:500; }
.mobile-nav .mobile-sub{ padding-left: 1rem; }
.mobile-nav .mobile-sub a{ font-size: .95rem; color: var(--ink-soft); padding: .7rem 0; }