/* ==========================================================================
   UltraTools AI — shared stylesheet
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@600;700;800&family=Inter:wght@400;500;600;700&display=swap');

:root{
  --bg:#F8FAFC;
  --card:#FFFFFF;
  --text:#0F172A;
  --text-dim:#475569;
  --primary:#2563EB;
  --accent:#7C3AED;
  --border:rgba(15,23,42,.08);
  --shadow:0 1px 2px rgba(15,23,42,.04), 0 8px 24px -12px rgba(15,23,42,.12);
  --radius:16px;
  --grad:linear-gradient(135deg,var(--primary) 0%,var(--accent) 100%);
  --font-display:'Poppins',sans-serif;
  --font-body:'Inter',sans-serif;
  --glass:rgba(255,255,255,.6);
}

/* ---------- Colour theme presets (5) ---------- */
html[data-theme="blue"]{ --primary:#2563EB; --accent:#7C3AED; }
html[data-theme="emerald"]{ --primary:#059669; --accent:#0D9488; }
html[data-theme="sunset"]{ --primary:#EA580C; --accent:#DB2777; }
html[data-theme="rose"]{ --primary:#E11D48; --accent:#7C3AED; }
html[data-theme="slate"]{ --primary:#334155; --accent:#0EA5E9; }

html.dark{
  --bg:#0B0F19;
  --card:#111827;
  --text:#E5E7EB;
  --text-dim:#94A3B8;
  --border:rgba(229,231,235,.08);
  --shadow:0 1px 2px rgba(0,0,0,.3), 0 8px 30px -12px rgba(37,99,235,.25);
  --glass:rgba(17,24,39,.6);
}

/* ---------- Accessible visually-hidden (used for real file inputs) ----------
   display:none blocks programmatic .click() on <input type="file"> in some
   mobile browsers/webviews, which stops the gallery/file picker opening.
   This technique keeps the input truly interactive while staying invisible. */
.visually-hidden{
  position:absolute !important;
  width:1px !important; height:1px !important;
  padding:0 !important; margin:-1px !important;
  overflow:hidden !important;
  clip:rect(0,0,0,0) !important;
  white-space:nowrap !important;
  border:0 !important;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-body);
  transition:background .25s ease,color .25s ease;
  -webkit-font-smoothing:antialiased;
}

h1,h2,h3,.brand{font-family:var(--font-display);}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
.container{max-width:1180px;margin:0 auto;padding:0 20px;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:var(--glass);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
}
.nav{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;max-width:1180px;margin:0 auto;}
.brand{font-weight:800;font-size:20px;display:flex;align-items:center;gap:8px;}
.brand .dot{width:10px;height:10px;border-radius:3px;background:var(--grad);display:inline-block;}
.nav-links{display:flex;gap:22px;align-items:center;font-size:14.5px;font-weight:500;}
.nav-links a{color:var(--text-dim);transition:color .2s;}
.nav-links a:hover{color:var(--primary);}
.nav-actions{display:flex;align-items:center;gap:10px;}
.icon-btn{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--border);
  background:var(--card);display:flex;align-items:center;justify-content:center;
  cursor:pointer;color:var(--text);font-size:13px;font-weight:600;
}
.icon-btn:hover{border-color:var(--primary);}
.menu-toggle{display:none;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:999px;font-weight:600;font-size:14.5px;
  border:1px solid transparent;cursor:pointer;transition:transform .15s ease, box-shadow .15s ease;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 20px -8px rgba(124,58,237,.55);}
.btn-primary:hover{transform:translateY(-1px);}
.btn-ghost{background:var(--card);border-color:var(--border);color:var(--text);}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);}
.btn-block{width:100%;}
.btn:disabled{opacity:.6;cursor:not-allowed;transform:none;}

/* ---------- Hero ---------- */
.hero{padding:64px 0 40px;text-align:center;}
.eyebrow{
  display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.06em;
  color:var(--primary);background:rgba(37,99,235,.1);padding:6px 14px;border-radius:999px;margin-bottom:18px;
}
.hero h1{font-size:clamp(28px,5vw,46px);line-height:1.15;margin:0 0 16px;}
.hero h1 span{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero p{color:var(--text-dim);font-size:17px;max-width:640px;margin:0 auto 26px;line-height:1.6;}
.hero-search{
  max-width:560px;margin:0 auto;display:flex;gap:8px;background:var(--card);
  border:1px solid var(--border);border-radius:999px;padding:6px;box-shadow:var(--shadow);
}
.hero-search input{
  flex:1;border:none;background:transparent;padding:10px 16px;font-size:15px;color:var(--text);outline:none;font-family:inherit;
}
.hero-stats{display:flex;justify-content:center;gap:32px;margin-top:34px;flex-wrap:wrap;}
.hero-stats div{text-align:center;}
.hero-stats b{display:block;font-size:22px;font-family:var(--font-display);}
.hero-stats span{font-size:13px;color:var(--text-dim);}

/* ---------- Sections ---------- */
.section{padding:46px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:22px;flex-wrap:wrap;gap:10px;}
.section-head h2{font-size:24px;margin:0 0 4px;}
.section-head p{color:var(--text-dim);margin:0;font-size:14.5px;}
.section-tag{font-size:12.5px;font-weight:700;color:var(--accent);text-transform:uppercase;letter-spacing:.05em;}

/* ---------- Tool grid & cards ---------- */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px;}
.tool-card{
  background:var(--glass);
  backdrop-filter:blur(10px);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:20px;
  box-shadow:var(--shadow);
  transition:transform .18s ease, border-color .18s ease;
  display:flex;flex-direction:column;gap:10px;height:100%;
}
.tool-card:hover{transform:translateY(-4px);border-color:var(--primary);}
.tool-icon{
  width:44px;height:44px;border-radius:12px;background:var(--grad);
  display:flex;align-items:center;justify-content:center;font-size:20px;color:#fff;
}
.tool-card h3{font-size:16.5px;margin:0;}
.tool-card p{font-size:13.5px;color:var(--text-dim);margin:0;line-height:1.5;flex:1;}
.tool-card .go{font-size:13px;font-weight:700;color:var(--primary);}
.badge-free{
  align-self:flex-start;font-size:11px;font-weight:700;color:#059669;
  background:rgba(5,150,105,.12);padding:3px 9px;border-radius:999px;
}

/* ---------- Benefit banner ---------- */
.benefit{
  margin-top:18px;padding:16px 20px;border-radius:14px;
  background:linear-gradient(135deg,rgba(37,99,235,.08),rgba(124,58,237,.08));
  border:1px solid var(--border);font-size:14.5px;color:var(--text-dim);
}
.benefit b{color:var(--text);}

/* ---------- Tool page layout ---------- */
.tool-page-head{padding:36px 0 10px;}
.tool-page-head h1{font-size:clamp(24px,4vw,34px);margin:0 0 10px;}
.tool-page-head p{color:var(--text-dim);font-size:15.5px;max-width:760px;line-height:1.6;}
.breadcrumb{font-size:13px;color:var(--text-dim);margin-bottom:14px;}
.breadcrumb a{color:var(--primary);}

.tool-app{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:26px;margin:22px 0;
}
.tool-app h2{font-size:16px;margin:0 0 14px;}
.field-row{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:14px;}
.field{flex:1;min-width:160px;display:flex;flex-direction:column;gap:6px;}
.field label{font-size:13px;font-weight:600;color:var(--text-dim);}
input[type=text],input[type=number],input[type=email],input[type=url],select,textarea{
  padding:11px 13px;border-radius:10px;border:1px solid var(--border);
  background:var(--bg);color:var(--text);font-family:inherit;font-size:14.5px;outline:none;
}
input[type=range]{width:100%;}
textarea{resize:vertical;min-height:110px;}
input:focus,select:focus,textarea:focus{border-color:var(--primary);}
.dropzone{
  border:2px dashed var(--border);border-radius:14px;padding:34px 20px;text-align:center;
  cursor:pointer;color:var(--text-dim);font-size:14px;transition:border-color .2s;
}
.dropzone:hover,.dropzone.drag{border-color:var(--primary);color:var(--primary);}
.result-box{
  margin-top:16px;padding:18px;border-radius:12px;background:var(--bg);
  border:1px solid var(--border);font-size:14.5px;
}
.result-box.hidden{display:none;}
.stat-pill{
  display:inline-flex;gap:6px;align-items:center;font-size:13px;font-weight:600;
  background:rgba(37,99,235,.1);color:var(--primary);padding:5px 12px;border-radius:999px;margin:4px 6px 0 0;
}
.progress{height:8px;background:var(--border);border-radius:999px;overflow:hidden;margin-top:10px;}
.progress > div{height:100%;background:var(--grad);width:0%;transition:width .2s;}
canvas{max-width:100%;border-radius:10px;}
.preview-img{max-width:100%;border-radius:10px;border:1px solid var(--border);margin-top:10px;}
.small-note{font-size:12.5px;color:var(--text-dim);margin-top:8px;}

/* ---------- Ad slots ---------- */
.ad-slot{
  display:flex;align-items:center;justify-content:center;
  background:var(--card);border:1px dashed var(--border);border-radius:12px;
  color:var(--text-dim);font-size:12.5px;min-height:90px;margin:26px 0;
}
.ad-slot.sticky-mobile{
  position:fixed;bottom:0;left:0;right:0;z-index:40;min-height:56px;border-radius:0;
  border-top:1px solid var(--border);border-left:none;border-right:none;border-bottom:none;
  display:none;
}
@media(max-width:760px){.ad-slot.sticky-mobile{display:flex;}}

/* ---------- Content / FAQ ---------- */
.content-block{color:var(--text-dim);font-size:15px;line-height:1.75;margin:20px 0;}
.content-block h2{color:var(--text);font-size:19px;margin:26px 0 10px;}
.faq{margin-top:10px;}
.faq-item{border-bottom:1px solid var(--border);padding:14px 0;}
.faq-q{display:flex;justify-content:space-between;align-items:center;cursor:pointer;font-weight:600;font-size:15px;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease;color:var(--text-dim);font-size:14px;line-height:1.6;}
.faq-item.open .faq-a{max-height:400px;padding-top:10px;}
.faq-item.open .faq-q .chev{transform:rotate(180deg);}
.chev{transition:transform .2s;}

/* ---------- Footer ---------- */
.site-footer{border-top:1px solid var(--border);margin-top:60px;padding:40px 0 90px;background:var(--card);}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:26px;}
.footer-grid h4{font-size:13.5px;margin:0 0 12px;}
.footer-grid ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px;}
.footer-grid a{font-size:13.5px;color:var(--text-dim);}
.footer-grid a:hover{color:var(--primary);}
.footer-bottom{
  max-width:1180px;margin:26px auto 0;padding:18px 20px 0;border-top:1px solid var(--border);
  font-size:12.5px;color:var(--text-dim);display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;
}
@media(max-width:760px){
  .footer-grid{grid-template-columns:1fr 1fr;}
  .menu-toggle{display:flex;}
  .nav-links{
    display:none;position:absolute;top:64px;left:0;right:0;background:var(--card);
    border-bottom:1px solid var(--border);flex-direction:column;padding:14px 20px;gap:14px;box-shadow:var(--shadow);
  }
  .nav-links.open-mobile{display:flex;}
  .footer-bottom{padding-bottom:64px;}
}
@media(min-width:761px){.menu-toggle{display:none;}}

/* ---------- Legal / static pages ---------- */
.static-page{padding:40px 0 20px;}
.static-page h1{font-size:30px;}
.static-page h2{font-size:19px;margin-top:28px;}
.static-page p, .static-page li{color:var(--text-dim);font-size:15px;line-height:1.75;}
.contact-form{display:flex;flex-direction:column;gap:12px;max-width:520px;}

/* utility */
.hidden{display:none !important;}

.theme-swatch{
  width:22px;height:22px;border-radius:999px;border:2px solid var(--card);
  box-shadow:0 0 0 1px var(--border);cursor:pointer;display:inline-block;
}
.theme-swatch.active{box-shadow:0 0 0 2px var(--primary);}
.theme-swatches{display:flex;gap:6px;align-items:center;padding:0 4px;}