/* ==========================================================================
   My Smart Free Tools — shared design system
   ========================================================================== */

:root{
  --paper:      #F6F4EF;
  --paper-dim:  #EFECE3;
  --surface:    #FFFFFF;
  --ink:        #16241C;
  --ink-soft:   #4A574C;
  --line:       #DAD5C8;
  --line-soft:  #E7E3D8;
  --emerald:    #1F6F5C;
  --emerald-dk: #165445;
  --gold:       #B68A34;
  --gold-soft:  #F1E6C8;
  --danger:     #A3402C;

  --font-display: "Fraunces", Georgia, serif;
  --font-body:    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono:    "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --maxw: 1080px;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }

body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}

a{ color:inherit; text-decoration:none; }
img{ max-width:100%; display:block; }

.wrap{
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 28px;
}

/* -------------------- focus / motion -------------------- */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible{
  outline: 2px solid var(--emerald);
  outline-offset: 2px;
}
@media (prefers-reduced-motion: reduce){
  *{ animation-duration:0.01ms !important; transition-duration:0.01ms !important; }
}

/* -------------------- header -------------------- */
.site-header{
  border-bottom:1px solid var(--line);
  background:var(--paper);
  position:sticky;
  top:0;
  z-index:20;
}
.site-header .wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:72px;
}
.logo{
  font-family:var(--font-display);
  font-weight:600;
  font-size:1.35rem;
  letter-spacing:-0.01em;
  display:flex;
  align-items:baseline;
  gap:2px;
}
.logo .mark{ color:var(--emerald); font-size:1.1em; }

nav.main-nav{
  display:flex;
  gap:28px;
}
nav.main-nav a{
  font-size:0.92rem;
  color:var(--ink-soft);
  border-bottom:1px solid transparent;
  padding-bottom:4px;
  transition:color .15s ease, border-color .15s ease;
}
nav.main-nav a:hover, nav.main-nav a.active{
  color:var(--ink);
  border-color:var(--emerald);
}
.nav-toggle{
  display:none;
  background:none;
  border:1px solid var(--line);
  border-radius:6px;
  width:40px;
  height:40px;
  align-items:center;
  justify-content:center;
  cursor:pointer;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after{
  content:"";
  display:block;
  width:18px;
  height:2px;
  background:var(--ink);
  position:relative;
}
.nav-toggle span::before{ position:absolute; top:-6px; }
.nav-toggle span::after{ position:absolute; top:6px; }

@media (max-width: 760px){
  nav.main-nav{
    display:none;
    position:absolute;
    top:72px; left:0; right:0;
    background:var(--paper);
    border-bottom:1px solid var(--line);
    flex-direction:column;
    gap:0;
    padding:8px 28px 18px;
  }
  nav.main-nav.open{ display:flex; }
  nav.main-nav a{ padding:12px 0; border-bottom:1px solid var(--line-soft); }
  .nav-toggle{ display:flex; }
}

/* -------------------- breadcrumb -------------------- */
.crumb{
  font-size:0.82rem;
  color:var(--ink-soft);
  margin-bottom:14px;
}
.crumb a:hover{ color:var(--emerald); }
.crumb .sep{ margin:0 6px; color:var(--line); }

/* -------------------- hero -------------------- */
.hero{
  padding:64px 0 56px;
  border-bottom:1px solid var(--line);
}
.hero .wrap{
  display:grid;
  grid-template-columns:1.1fr 0.9fr;
  gap:56px;
  align-items:center;
}
.hero h1{
  font-family:var(--font-display);
  font-weight:600;
  font-size:clamp(2.2rem, 4vw, 3.3rem);
  line-height:1.08;
  letter-spacing:-0.01em;
  margin:0 0 18px;
}
.hero p.lede{
  font-size:1.08rem;
  color:var(--ink-soft);
  max-width:46ch;
  margin:0 0 26px;
}
.hero-actions{ display:flex; gap:14px; flex-wrap:wrap; }

.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:12px 22px;
  border-radius:4px;
  font-size:0.95rem;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:background .15s ease, color .15s ease, border-color .15s ease;
}
.btn-primary{ background:var(--emerald); color:#fff; }
.btn-primary:hover{ background:var(--emerald-dk); }
.btn-ghost{ border-color:var(--line); color:var(--ink); }
.btn-ghost:hover{ border-color:var(--ink); }

/* -------------------- hero demo widget -------------------- */
.demo-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:6px;
  padding:26px;
}
.demo-card .demo-label{
  font-size:0.78rem;
  color:var(--ink-soft);
  margin-bottom:14px;
}
.demo-card input[type=range]{ width:100%; accent-color:var(--emerald); margin:10px 0 18px; }
.demo-row{
  display:flex;
  justify-content:space-between;
  align-items:baseline;
  padding:10px 0;
  border-top:1px solid var(--line-soft);
  font-size:0.92rem;
}
.demo-row:first-of-type{ border-top:none; }
.demo-row .val{ font-family:var(--font-mono); }
.demo-total{
  margin-top:6px;
  padding-top:14px;
  border-top:1px solid var(--ink);
  display:flex;
  justify-content:space-between;
  align-items:baseline;
}
.demo-total .num{
  font-family:var(--font-mono);
  font-size:1.6rem;
  color:var(--emerald-dk);
  font-weight:600;
}

/* -------------------- category ledger sections -------------------- */
.category{
  padding:44px 0;
  border-bottom:1px solid var(--line);
}
.category-head{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  margin-bottom:6px;
}
.category-head h2{
  font-family:var(--font-display);
  font-size:1.5rem;
  font-weight:600;
  margin:0;
}
.category-head .count{
  font-size:0.85rem;
  color:var(--ink-soft);
}

.tool-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:20px 0;
  border-top:1px solid var(--line-soft);
  transition:padding-left .15s ease;
}
.tool-row:hover{ padding-left:8px; }
.tool-row .t-name{
  font-family:var(--font-display);
  font-size:1.15rem;
  font-weight:600;
  margin:0 0 4px;
}
.tool-row .t-desc{
  color:var(--ink-soft);
  font-size:0.92rem;
  max-width:56ch;
}
.tool-row .t-go{
  font-size:0.88rem;
  font-weight:600;
  color:var(--emerald-dk);
  white-space:nowrap;
  flex-shrink:0;
  border:1px solid var(--line);
  border-radius:4px;
  padding:8px 16px;
  transition:border-color .15s ease, background .15s ease;
}
.tool-row:hover .t-go{ border-color:var(--emerald); background:var(--surface); }
.tool-row.soon .t-go{ color:var(--ink-soft); }
.tool-row.soon{ opacity:0.6; }

/* -------------------- tool page layout -------------------- */
.tool-hero{
  padding:44px 0 8px;
}
.tool-hero h1{
  font-family:var(--font-display);
  font-size:clamp(1.9rem, 3.4vw, 2.6rem);
  font-weight:600;
  margin:0 0 12px;
  letter-spacing:-0.01em;
}
.tool-hero p{
  color:var(--ink-soft);
  max-width:60ch;
  font-size:1.02rem;
}

.tool-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:40px;
  padding:32px 0 56px;
  align-items:start;
}
@media (max-width: 820px){
  .tool-grid{ grid-template-columns:1fr; }
  .hero .wrap{ grid-template-columns:1fr; }
}

.panel{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:6px;
  padding:28px;
}
.panel h3{
  font-family:var(--font-display);
  font-size:1.1rem;
  margin:0 0 18px;
  font-weight:600;
}

.field{ margin-bottom:18px; }
.field label{
  display:block;
  font-size:0.86rem;
  color:var(--ink-soft);
  margin-bottom:6px;
}
.field input[type=text],
.field input[type=number],
.field select,
.field textarea{
  width:100%;
  padding:11px 12px;
  border:1px solid var(--line);
  border-radius:4px;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-mono);
  font-size:0.98rem;
}
.field textarea{ font-family:var(--font-body); resize:vertical; min-height:120px; }
.field input:focus, .field select:focus, .field textarea:focus{
  border-color:var(--emerald);
  background:var(--surface);
}
.field-row{ display:grid; grid-template-columns:1fr 1fr; gap:14px; }
.hint{ font-size:0.78rem; color:var(--ink-soft); margin-top:5px; }

.radio-group{ display:flex; gap:10px; flex-wrap:wrap; }
.radio-chip{
  border:1px solid var(--line);
  border-radius:20px;
  padding:8px 16px;
  font-size:0.86rem;
  cursor:pointer;
  color:var(--ink-soft);
  transition:all .15s ease;
}
.radio-chip input{ display:none; }
.radio-chip.active{ border-color:var(--emerald); color:var(--emerald-dk); background:var(--gold-soft); }

/* result / receipt panel */
.receipt{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:6px;
  overflow:hidden;
}
.receipt-head{
  background:var(--ink);
  color:var(--paper);
  padding:20px 28px;
}
.receipt-head .r-label{ font-size:0.78rem; color:#C7D1C9; margin-bottom:6px; }
.receipt-head .r-num{
  font-family:var(--font-mono);
  font-size:2.1rem;
  font-weight:600;
  color:#fff;
}
.receipt-head .r-num .gold{ color:var(--gold); }
.receipt-body{ padding:22px 28px; }
.r-row{
  display:flex;
  justify-content:space-between;
  padding:11px 0;
  border-top:1px dashed var(--line);
  font-size:0.92rem;
}
.r-row:first-child{ border-top:none; }
.r-row .r-val{ font-family:var(--font-mono); font-weight:600; }
.r-row.total{ border-top:1px solid var(--ink); margin-top:4px; padding-top:16px; font-weight:600; }

.copy-btn{
  margin-top:18px;
  width:100%;
  padding:11px;
  border:1px solid var(--line);
  background:var(--paper);
  border-radius:4px;
  font-size:0.88rem;
  font-weight:600;
  cursor:pointer;
  color:var(--ink);
}
.copy-btn:hover{ border-color:var(--emerald); color:var(--emerald-dk); }

/* -------------------- article / supporting content -------------------- */
.article{
  padding:8px 0 56px;
  border-top:1px solid var(--line);
  padding-top:48px;
}
.article .wrap{ max-width:760px; }
.article h2{
  font-family:var(--font-display);
  font-size:1.5rem;
  font-weight:600;
  margin:36px 0 14px;
}
.article h2:first-child{ margin-top:0; }
.article p{ color:var(--ink-soft); margin:0 0 16px; }
.article ul, .article ol{ color:var(--ink-soft); padding-left:22px; margin-bottom:16px; }
.article li{ margin-bottom:8px; }
.article .faq-q{ font-weight:600; color:var(--ink); margin-bottom:4px; }

/* -------------------- footer -------------------- */
.site-footer{
  border-top:1px solid var(--line);
  padding:40px 0;
  margin-top:0;
}
.site-footer .wrap{
  display:flex;
  justify-content:space-between;
  align-items:center;
  flex-wrap:wrap;
  gap:16px;
}
.site-footer .f-links{ display:flex; gap:22px; flex-wrap:wrap; }
.site-footer a{ font-size:0.85rem; color:var(--ink-soft); }
.site-footer a:hover{ color:var(--emerald-dk); }
.site-footer .f-copy{ font-size:0.82rem; color:var(--ink-soft); }

/* -------------------- disclaimer -------------------- */
.disclaimer{
  font-size:0.78rem;
  color:var(--ink-soft);
  background:var(--paper-dim);
  border:1px solid var(--line);
  border-radius:4px;
  padding:12px 16px;
  margin-top:18px;
}