/* ==========================================================================
   Tidy Stacks LLC — Site Stylesheet
   Design language: "Systems Blueprint" — precise, technical, trustworthy.
   ========================================================================== */

:root{
  --ink:        #121212;   /* deep background / dark sections */
  --blueprint:  #262626;   /* primary brand tone (was blue, now near-black) */
  --signal:     #757575;   /* accent grey — "optimized" signal */
  --paper:      #F5F5F5;   /* light background */
  --paper-dim:  #EBEBEB;
  --slate:      #5C5C5C;   /* secondary text */
  --ink-70:     rgba(18,18,18,.72);
  --amber:      #D9D9D9;   /* sparing use — savings / alerts */
  --line:       #DADADA;
  --white:      #FFFFFF;

  --font-display: 'Inter', -apple-system, Segoe UI, sans-serif;
  --font-body:    'Inter', -apple-system, Segoe UI, sans-serif;
  --font-mono:    'Inter', -apple-system, Segoe UI, sans-serif;

  --radius: 3px;
  --container: 1180px;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--paper);
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:600;
  line-height:1.2;
  margin:0 0 .5em;
  letter-spacing:.01em;
  text-transform:uppercase;
}
p{ margin:0 0 1em; color:var(--ink-70); }
ul{ margin:0; padding:0; }
.container{ max-width:var(--container); margin:0 auto; padding:0 24px; }

:focus-visible{
  outline:2px solid var(--signal);
  outline-offset:3px;
}

/* Utility -------------------------------------------------------------- */
.eyebrow{
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--signal);
  display:flex;
  align-items:center;
  gap:.6em;
  margin-bottom:.9em;
}
.eyebrow::before{
  content:'';
  width:22px; height:1px;
  background:var(--signal);
  display:inline-block;
}
.btn{
  display:inline-flex;
  align-items:center;
  gap:.5em;
  font-family:var(--font-mono);
  font-size:.85rem;
  letter-spacing:.03em;
  padding:.85em 1.4em;
  border-radius:var(--radius);
  border:1px solid var(--blueprint);
  background:var(--blueprint);
  color:var(--white);
  cursor:pointer;
  transition:transform .15s ease, background .15s ease, color .15s ease, border-color .15s ease;
}
.btn:hover{ background:var(--ink); border-color:var(--ink); transform:translateY(-1px); }
.btn.btn-outline{ background:transparent; color:var(--blueprint); }
.btn.btn-outline:hover{ background:var(--blueprint); color:var(--white); }
.btn.btn-signal{ background:var(--signal); border-color:var(--signal); }
.btn.btn-signal:hover{ background:#5C5C5C; border-color:#5C5C5C; }
.btn:disabled{ opacity:.5; cursor:not-allowed; transform:none; }
.btn-block{ width:100%; justify-content:center; }

.section{ padding:88px 0; }
.section-tight{ padding:56px 0; }
.section-dark{ background:var(--ink); color:var(--white); }
.section-dark p{ color:rgba(255,255,255,.68); }
.section-dark .eyebrow{ color:var(--signal); }

.grid-note{
  font-family:var(--font-mono);
  font-size:.72rem;
  color:var(--slate);
  letter-spacing:.06em;
}

/* Header ----------------------------------------------------------------- */
.site-header{
  position:sticky; top:0; z-index:50;
  background:rgba(245,245,245,.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex; align-items:center; justify-content:space-between;
  padding:16px 24px;
  max-width:var(--container); margin:0 auto;
}
.brand{
  display:flex; align-items:center; gap:.6em;
  font-family:var(--font-display); font-weight:700; font-size:1.05rem;
  color:var(--ink);
  text-transform:uppercase;
  letter-spacing:.02em;
}
.brand .mark{
  width:34px;height:34px;
  border:1.5px solid var(--ink);
  border-radius:2px;
  display:grid; place-items:center;
  position:relative;
}
.brand .mark::before,.brand .mark::after{
  content:'';
  position:absolute;
  background:var(--signal);
}
.brand .mark::before{ width:14px; height:1.5px; }
.brand .mark::after{ width:1.5px; height:14px; }
.brand small{
  display:block;
  font-family:var(--font-mono);
  font-weight:400;
  font-size:.62rem;
  letter-spacing:.12em;
  color:var(--slate);
  text-transform:uppercase;
}

.main-nav{ display:flex; align-items:center; gap:28px; }
.main-nav a{
  font-family:var(--font-mono);
  font-size:.82rem;
  letter-spacing:.03em;
  color:var(--ink-70);
  padding:6px 2px;
  border-bottom:1.5px solid transparent;
  transition:color .15s, border-color .15s;
}
.main-nav a:hover, .main-nav a.active{ color:var(--ink); border-color:var(--signal); }

.header-actions{ display:flex; align-items:center; gap:14px; }
.cart-link{
  position:relative;
  display:inline-flex; align-items:center; justify-content:center;
  width:38px; height:38px;
  border:1px solid var(--line);
  border-radius:var(--radius);
}
.cart-link svg{ width:18px; height:18px; }
.cart-badge{
  position:absolute; top:-7px; right:-7px;
  background:var(--signal); color:var(--white);
  font-family:var(--font-mono); font-size:.62rem; font-weight:700;
  width:18px; height:18px; border-radius:50%;
  display:grid; place-items:center;
}
.cart-badge[data-count="0"]{ display:none; }

.nav-toggle{
  display:none;
  width:38px; height:38px;
  border:1px solid var(--line); border-radius:var(--radius);
  background:none; cursor:pointer;
  align-items:center; justify-content:center;
}
.nav-toggle svg{ width:18px; height:18px; }

/* Footer ------------------------------------------------------------------ */
.site-footer{
  background:var(--ink);
  color:rgba(255,255,255,.65);
  padding:64px 0 28px;
  font-size:.92rem;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:36px;
  padding-bottom:40px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-grid h4{
  color:var(--white);
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.12em;
  text-transform:uppercase;
  margin-bottom:1em;
}
.footer-grid p{ color:rgba(255,255,255,.55); font-size:.9rem; }
.footer-grid ul li{ list-style:none; margin-bottom:.6em; }
.footer-grid ul a{ color:rgba(255,255,255,.65); }
.footer-grid ul a:hover{ color:var(--signal); }
.footer-bottom{
  display:flex; align-items:center; justify-content:space-between;
  padding-top:24px; flex-wrap:wrap; gap:12px;
  font-family:var(--font-mono); font-size:.74rem; color:rgba(255,255,255,.45);
}
.footer-bottom-nav{ display:flex; gap:18px; flex-wrap:wrap; }
.footer-bottom-nav a{ color:rgba(255,255,255,.6); }
.footer-bottom-nav a:hover{ color:var(--signal); }

/* Hero ---------------------------------------------------------------- */
.hero{
  position:relative;
  background:var(--ink);
  color:var(--white);
  overflow:hidden;
  padding:110px 0 90px;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size:44px 44px;
}
.hero::after{
  content:'';
  position:absolute; inset:0;
  background:radial-gradient(circle at 82% 22%, rgba(255,255,255,.09), transparent 55%);
  pointer-events:none;
}
.hero-inner{ position:relative; max-width:640px; }
.hero h1{ font-size:clamp(2.2rem,4.4vw,3.4rem); }
.hero p.lead{ font-size:1.08rem; color:rgba(255,255,255,.72); max-width:520px; }
.hero-cta{ display:flex; gap:14px; margin-top:1.6em; flex-wrap:wrap; }
.hero-zones{
  display:flex; gap:0; margin-top:52px;
  border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius);
  overflow:hidden;
}
.hero-zone{
  flex:1; padding:18px 20px;
  border-right:1px solid rgba(255,255,255,.16);
  font-family:var(--font-mono); font-size:.78rem;
}
.hero-zone:last-child{ border-right:none; }
.hero-zone strong{ display:block; font-family:var(--font-display); font-size:1.15rem; color:var(--white); margin-bottom:.3em; }
.hero-zone span{ color:rgba(255,255,255,.55); }

/* Cards ------------------------------------------------------------------ */
.grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.grid.cols-2{ grid-template-columns:repeat(2,1fr); }
.grid.cols-4{ grid-template-columns:repeat(4,1fr); }

.card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:26px;
  display:flex; flex-direction:column; gap:10px;
  position:relative;
}
.card .id-tag{
  font-family:var(--font-mono); font-size:.68rem; color:var(--signal);
  letter-spacing:.08em;
}
.card h3{ font-size:1.15rem; margin-bottom:.2em; }
.card .desc{ font-size:.92rem; color:var(--slate); flex:1; }
.card .price-row{
  display:flex; align-items:baseline; justify-content:space-between;
  border-top:1px dashed var(--line);
  padding-top:12px; margin-top:6px;
}
.card .price{
  font-family:var(--font-mono); font-weight:700; font-size:1.25rem; color:var(--ink);
}
.card .price .unit{ font-size:.68rem; color:var(--slate); font-weight:400; margin-left:.3em; }
.card .save-badge{
  position:absolute; top:20px; right:20px;
  background:var(--amber); color:var(--ink);
  font-family:var(--font-mono); font-size:.66rem; font-weight:700;
  padding:.3em .6em; border-radius:2px;
}
.card .includes{ font-size:.82rem; color:var(--slate); margin:0 0 .6em; padding-left:1.1em; }
.card .includes li{ list-style:disc; margin-bottom:.25em; }
.card-actions{ display:flex; gap:8px; margin-top:4px; }
.card-actions .btn{ flex:1; }

.photo-frame{
  aspect-ratio:16/10;
  border-radius:var(--radius);
  background:linear-gradient(135deg, var(--blueprint), var(--ink));
  position:relative;
  overflow:hidden;
  margin-bottom:6px;
}
.photo-frame::before{
  content:attr(data-code);
  position:absolute; bottom:10px; left:12px;
  font-family:var(--font-mono); font-size:.66rem; color:rgba(255,255,255,.7);
  letter-spacing:.08em;
}
.photo-frame::after{
  content:'';
  position:absolute; inset:0;
  background-image:linear-gradient(rgba(255,255,255,.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.08) 1px, transparent 1px);
  background-size:18px 18px;
}

/* Sections: split / feature ------------------------------------------- */
.split{ display:grid; grid-template-columns:1fr 1fr; gap:56px; align-items:center; }
.stat-row{ display:flex; gap:36px; margin-top:24px; flex-wrap:wrap; }
.stat{ font-family:var(--font-mono); }
.stat strong{ display:block; font-size:1.6rem; font-family:var(--font-display); color:var(--ink); }
.stat span{ font-size:.72rem; color:var(--slate); letter-spacing:.04em; }
.section-dark .stat strong{ color:var(--white); }

.section-head{ max-width:640px; margin-bottom:44px; }
.section-head.center{ margin-left:auto; margin-right:auto; text-align:center; }

/* Forms ------------------------------------------------------------------ */
.field{ margin-bottom:18px; }
.field label{
  display:block; font-family:var(--font-mono); font-size:.74rem;
  letter-spacing:.05em; margin-bottom:.5em; color:var(--ink);
}
.field .req{ color:var(--signal); }
.field input, .field textarea, .field select{
  width:100%;
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:.85em 1em;
  font-family:var(--font-body);
  font-size:.95rem;
  background:var(--white);
  color:var(--ink);
}
.field input:focus, .field textarea:focus, .field select:focus{
  outline:2px solid var(--signal); outline-offset:1px; border-color:var(--signal);
}
.field-row{ display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.checkbox-field{ display:flex; align-items:flex-start; gap:.6em; }
.checkbox-field input{ width:auto; margin-top:.3em; }
.checkbox-field label{ font-family:var(--font-body); font-size:.86rem; color:var(--slate); margin:0; }
.form-note{ font-size:.8rem; color:var(--slate); }
.form-status{
  margin-top:16px; padding:14px 16px; border-radius:var(--radius);
  font-size:.9rem; display:none;
}
.form-status.visible{ display:block; }
.form-status.success{ background:#F0F0F0; color:var(--ink); border:1px solid var(--line); }
.form-status.error{ background:#EDEDED; color:var(--ink); border:1.5px solid var(--ink); }

/* Cart / checkout ---------------------------------------------------------*/
.cart-table{ width:100%; border-collapse:collapse; }
.cart-table th{
  text-align:left; font-family:var(--font-mono); font-size:.7rem;
  letter-spacing:.08em; text-transform:uppercase; color:var(--slate);
  border-bottom:1px solid var(--line); padding:0 0 12px;
}
.cart-table td{
  padding:18px 0; border-bottom:1px solid var(--line); vertical-align:top;
}
.cart-item-name{ font-family:var(--font-display); font-weight:600; }
.cart-item-meta{ font-family:var(--font-mono); font-size:.72rem; color:var(--slate); }
.qty-control{ display:inline-flex; align-items:center; border:1px solid var(--line); border-radius:var(--radius); }
.qty-control button{
  width:30px; height:30px; border:none; background:none; cursor:pointer; font-size:1rem; color:var(--ink);
}
.qty-control input{
  width:38px; text-align:center; border:none; border-left:1px solid var(--line); border-right:1px solid var(--line);
  font-family:var(--font-mono); padding:6px 0;
}
.remove-link{ font-family:var(--font-mono); font-size:.72rem; color:var(--slate); cursor:pointer; text-decoration:underline; background:none; border:none; padding:0; }
.remove-link:hover{ color:var(--ink); }
.cart-summary{
  border:1px solid var(--line); border-radius:var(--radius); padding:24px; background:var(--white);
}
.summary-row{ display:flex; justify-content:space-between; font-family:var(--font-mono); font-size:.88rem; margin-bottom:10px; color:var(--slate); }
.summary-row.total{ font-size:1.15rem; color:var(--ink); font-weight:700; border-top:1px dashed var(--line); padding-top:14px; margin-top:6px; }
.empty-cart{
  text-align:center; padding:70px 20px; border:1px dashed var(--line); border-radius:var(--radius);
}

/* Legal pages --------------------------------------------------------- */
.legal-page{ max-width:820px; }
.legal-page h2{ margin-top:2em; font-size:1.3rem; }
.legal-page h3{ margin-top:1.4em; font-size:1.05rem; }
.legal-page p, .legal-page li{ color:var(--slate); }
.legal-page ul, .legal-page ol{ padding-left:1.3em; margin-bottom:1em; }
.legal-page li{ margin-bottom:.4em; }
.legal-meta{
  font-family:var(--font-mono); font-size:.78rem; color:var(--signal);
  border:1px solid var(--line); border-radius:var(--radius);
  padding:14px 16px; margin-bottom:2em; background:var(--white);
}
.toc{
  border:1px solid var(--line); border-radius:var(--radius); padding:20px 24px; margin-bottom:2.5em; background:var(--white);
}
.toc h4{ font-family:var(--font-mono); font-size:.72rem; letter-spacing:.1em; text-transform:uppercase; color:var(--slate); margin-bottom:.8em; }
.toc ol{ padding-left:1.2em; }
.toc a{ color:var(--blueprint); }
.toc a:hover{ text-decoration:underline; }

/* Cookie banner ---------------------------------------------------------- */
.cookie-banner{
  position:fixed; left:16px; right:16px; bottom:16px; z-index:200;
  max-width:680px; margin:0 auto;
  background:var(--ink); color:var(--white);
  border-radius:var(--radius); border:1px solid rgba(255,255,255,.14);
  padding:22px 24px;
  box-shadow:0 12px 40px rgba(0,0,0,.25);
  display:none;
}
.cookie-banner.visible{ display:block; }
.cookie-banner p{ color:rgba(255,255,255,.72); font-size:.88rem; margin-bottom:14px; }
.cookie-banner .cookie-actions{ display:flex; gap:10px; flex-wrap:wrap; }
.cookie-banner a{ color:var(--signal); text-decoration:underline; }

/* Misc pages --------------------------------------------------------- */
.breadcrumb{
  font-family:var(--font-mono); font-size:.72rem; color:var(--slate); letter-spacing:.04em;
  margin-bottom:18px;
}
.breadcrumb a{ color:var(--blueprint); }

.value-list{ display:grid; grid-template-columns:repeat(2,1fr); gap:20px; margin-top:8px; }
.value-item{ border-left:2px solid var(--signal); padding-left:16px; }
.value-item h4{ font-family:var(--font-display); font-size:1rem; margin-bottom:.3em; }
.value-item p{ font-size:.9rem; }

.team-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
.team-card{ text-align:left; }
.team-photo{
  aspect-ratio:1; border-radius:var(--radius); margin-bottom:12px;
  background:linear-gradient(135deg,var(--blueprint),var(--signal));
}
.team-card h4{ font-size:1rem; margin-bottom:.1em; }
.team-card span{ font-family:var(--font-mono); font-size:.72rem; color:var(--slate); }

.map-frame{
  border:1px solid var(--line); border-radius:var(--radius);
  aspect-ratio:16/9; overflow:hidden;
}

/* Responsive ------------------------------------------------------------ */
@media (max-width:900px){
  .main-nav{ display:none; }
  .nav-toggle{ display:inline-flex; }
  .grid{ grid-template-columns:repeat(2,1fr); }
  .grid.cols-4{ grid-template-columns:repeat(2,1fr); }
  .split{ grid-template-columns:1fr; gap:32px; }
  .footer-grid{ grid-template-columns:1fr 1fr; }
  .hero-zones{ flex-direction:column; }
  .hero-zone{ border-right:none; border-bottom:1px solid rgba(255,255,255,.16); }
  .hero-zone:last-child{ border-bottom:none; }
  .value-list{ grid-template-columns:1fr; }
  .team-grid{ grid-template-columns:1fr; }
}
@media (max-width:640px){
  .grid, .grid.cols-4{ grid-template-columns:1fr; }
  .field-row{ grid-template-columns:1fr; }
  .footer-grid{ grid-template-columns:1fr; }
  .footer-bottom{ flex-direction:column; align-items:flex-start; }
  .section{ padding:56px 0; }
}

/* Mobile nav drawer ------------------------------------------------------ */
.mobile-nav{
  display:none;
  position:fixed; inset:0; z-index:100;
  background:var(--ink);
  padding:100px 32px 32px;
}
.mobile-nav.open{ display:block; }
.mobile-nav a{
  display:block; color:var(--white); font-family:var(--font-mono);
  font-size:1.1rem; padding:14px 0; border-bottom:1px solid rgba(255,255,255,.12);
}

@media (prefers-reduced-motion: reduce){
  *{ scroll-behavior:auto !important; transition:none !important; animation:none !important; }
}