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

:root{
  --bg:#1a1d24;
  --bg-soft:#22262f;
  --card:#272b35;
  --text:#f5f3ee;
  --text-dim:#a3a9b7;
  --accent:#c4ff4d;
  --accent-dim:#9bd636;
  --border:#383d4a;
  --radius:14px;
  --max:1100px;
}

*{box-sizing:border-box; margin:0; padding:0;}

html{scroll-behavior:smooth;}

body{
  background:var(--bg);
  color:var(--text);
  font-family:'Inter',sans-serif;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}

h1,h2,h3,h4{
  font-family:'Space Grotesk',sans-serif;
  font-weight:700;
  line-height:1.15;
  letter-spacing:-0.01em;
}

a{color:var(--accent); text-decoration:none;}
a:hover{text-decoration:underline;}

img{max-width:100%; display:block;}

.container{max-width:var(--max); margin:0 auto; padding:0 24px;}

/* Header */
.site-header{
  position:sticky; top:0; z-index:100;
  background:rgba(26,29,36,0.85);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
}
.nav{
  display:flex; align-items:center; justify-content:space-between;
  padding:16px 24px; max-width:var(--max); margin:0 auto;
}
.logo{
  font-family:'Space Grotesk',sans-serif;
  font-weight:700; font-size:1.3rem; color:var(--text);
  display:flex; align-items:center; gap:8px;
}
.logo span{color:var(--accent);}
.nav-links{display:flex; gap:28px; align-items:center;}
.nav-links a{color:var(--text-dim); font-weight:500; font-size:0.95rem;}
.nav-links a:hover{color:var(--text); text-decoration:none;}
.nav-toggle{display:none; background:none; border:1px solid var(--border); color:var(--text); padding:8px 12px; border-radius:8px; cursor:pointer;}

@media(max-width:760px){
  .nav-links{
    position:absolute; top:100%; left:0; right:0;
    background:var(--bg-soft); flex-direction:column;
    padding:16px 24px; gap:16px; border-bottom:1px solid var(--border);
    display:none;
  }
  .nav-links.open{display:flex;}
  .nav-toggle{display:block;}
}

/* Hero */
.hero{
  padding:60px 24px 40px;
  text-align:center;
}
.hero h1{
  font-size:clamp(2rem, 5vw, 3.2rem);
  margin-bottom:16px;
}
.hero h1 .accent{color:var(--accent);}
.hero p{
  color:var(--text-dim);
  font-size:1.05rem;
  max-width:560px;
  margin:0 auto;
}

/* Converter card */
.converter{
  max-width:680px; margin:40px auto 0;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:32px;
}

.dropzone{
  border:2px dashed var(--border);
  border-radius:12px;
  padding:48px 24px;
  text-align:center;
  cursor:pointer;
  transition:border-color .2s ease, background .2s ease, transform .15s ease;
  position:relative;
}
.dropzone:hover, .dropzone.drag{
  border-color:var(--accent);
  background:rgba(196,255,77,0.04);
}
.dropzone.drag{transform:scale(1.01);}
.dropzone input{display:none;}
.dropzone .icon{
  font-size:2.5rem; margin-bottom:12px;
  display:inline-block;
  transition:transform .3s ease;
}
.dropzone.drag .icon{transform:translateY(-6px) rotate(-6deg);}
.dropzone .label{font-weight:600; font-size:1.05rem; margin-bottom:4px;}
.dropzone .sub{color:var(--text-dim); font-size:0.9rem;}

.controls{
  margin-top:24px; display:flex; flex-direction:column; gap:16px;
}
.dimension-row{
  display:flex; align-items:center; gap:10px; flex-wrap:wrap; justify-content:center;
}
.dimension-row input[type=number]{
  background:var(--bg-soft); color:var(--text);
  border:1px solid var(--border); border-radius:8px;
  padding:10px 12px; font-size:0.95rem; font-family:inherit;
  width:100px; text-align:center;
}
.dimension-row .x{color:var(--text-dim); font-weight:600;}
.lock-ratio-label{
  display:flex; align-items:center; gap:6px;
  font-size:0.88rem; color:var(--text-dim); cursor:pointer;
}
.lock-ratio-label input{accent-color:var(--accent);}

.format-row{
  display:flex; align-items:center; gap:12px; flex-wrap:wrap; justify-content:center;
}
.format-row label{font-size:0.9rem; color:var(--text-dim); font-weight:500;}
.format-row select{
  background:var(--bg-soft); color:var(--text);
  border:1px solid var(--border); border-radius:8px;
  padding:10px 14px; font-size:0.95rem; font-family:inherit;
  cursor:pointer;
}
.quality-row{display:none; align-items:center; gap:12px; justify-content:center;}
.quality-row.show{display:flex;}
.quality-row input[type=range]{accent-color:var(--accent); width:160px;}

.btn{
  display:inline-block;
  background:var(--accent);
  color:#1a1d24;
  font-weight:700;
  font-family:'Space Grotesk',sans-serif;
  border:none;
  border-radius:10px;
  padding:14px 28px;
  font-size:1rem;
  cursor:pointer;
  transition:transform .15s ease, background .2s ease;
  text-align:center;
}
.btn:hover{background:var(--accent-dim); transform:translateY(-1px);}
.btn:disabled{opacity:0.4; cursor:not-allowed; transform:none;}
.btn-secondary{
  background:transparent; color:var(--text);
  border:1px solid var(--border);
}
.btn-secondary:hover{border-color:var(--accent); background:transparent;}

.dropzone.received{
  animation:dropzone-pulse .6s ease;
}
@keyframes dropzone-pulse{
  0%   { transform:scale(1);    border-color:var(--accent); background:rgba(196,255,77,0.04); }
  35%  { transform:scale(1.02); border-color:var(--accent); background:rgba(196,255,77,0.10); }
  100% { transform:scale(1);    border-color:var(--border); background:transparent; }
}

.preview-item-new{
  animation:item-pop-in .4s ease;
}
@keyframes item-pop-in{
  0%   { opacity:0; transform:translateY(10px) scale(0.97); }
  60%  { opacity:1; transform:translateY(-2px) scale(1.01); }
  100% { opacity:1; transform:translateY(0) scale(1); }
}

.preview-list{margin-top:20px; display:flex; flex-direction:column; gap:10px;}
.preview-item{
  display:flex; align-items:center; gap:12px;
  background:var(--bg-soft); border:1px solid var(--border);
  border-radius:10px; padding:10px 14px;
}
.preview-item img{width:44px; height:44px; object-fit:cover; border-radius:6px; flex-shrink:0;}
.preview-item .meta{flex:1; min-width:0;}
.preview-item .name{font-size:0.9rem; font-weight:500; white-space:nowrap; overflow:hidden; text-overflow:ellipsis;}
.preview-item .size{font-size:0.8rem; color:var(--text-dim);}
.preview-item .dl{font-size:0.85rem; font-weight:600; flex-shrink:0;}
.preview-item .dl.pending{color:var(--text-dim);}
.preview-item .remove-btn{
  background:none; border:none; color:var(--text-dim);
  font-size:0.95rem; cursor:pointer; flex-shrink:0; padding:4px 6px;
  border-radius:6px; line-height:1;
}
.preview-item .remove-btn:hover{color:var(--text); background:var(--border);}

.convert-summary{
  margin-top:16px; text-align:center; font-size:0.9rem;
  font-weight:600; color:var(--text-dim); display:none;
}
.convert-summary.show{display:block; color:var(--accent);}

.download-all-btn{display:none; margin-top:12px;}

.privacy-note{
  margin-top:20px; text-align:center; font-size:0.85rem; color:var(--text-dim);
}
.privacy-note .tick{color:var(--accent);}

/* Sections */
.section{padding:64px 24px;}
.section h2{font-size:clamp(1.6rem,3.5vw,2.2rem); margin-bottom:12px;}
.section .lead{color:var(--text-dim); max-width:640px; margin-bottom:32px;}

.grid-3{display:grid; grid-template-columns:repeat(3,1fr); gap:20px;}
@media(max-width:760px){.grid-3{grid-template-columns:1fr;}}

.feature{
  background:var(--card); border:1px solid var(--border);
  border-radius:var(--radius); padding:24px;
}
.feature .emoji{font-size:1.6rem; margin-bottom:10px;}
.feature h3{font-size:1.05rem; margin-bottom:8px;}
.feature p{color:var(--text-dim); font-size:0.92rem;}

/* Tools grid (homepage) */
.tools-grid{display:grid; grid-template-columns:repeat(auto-fit,minmax(220px,1fr)); gap:16px;}
.tool-card{
  background:var(--card); border:1px solid var(--border);
  border-radius:var(--radius); padding:20px;
  display:flex; flex-direction:column; gap:6px;
  transition:border-color .2s ease, transform .15s ease;
}
.tool-card:hover{border-color:var(--accent); transform:translateY(-2px); text-decoration:none;}
.tool-card .pair{font-family:'Space Grotesk',sans-serif; font-weight:700; font-size:1.1rem; color:var(--text);}
.tool-card .desc{color:var(--text-dim); font-size:0.88rem;}

/* FAQ */
.faq-item{border-bottom:1px solid var(--border); padding:18px 0;}
.faq-item h3{font-size:1.02rem; margin-bottom:8px; font-family:'Inter',sans-serif; font-weight:600;}
.faq-item p{color:var(--text-dim); font-size:0.92rem;}

/* Ad slots */
.ad-slot{
  max-width:var(--max); margin:0 auto; padding:0 24px;
}
.ad-slot .ad-box{
  border:1px dashed var(--border); border-radius:10px;
  text-align:center; padding:20px; color:var(--text-dim);
  font-size:0.8rem; letter-spacing:0.05em; text-transform:uppercase;
}

/* Footer */
.site-footer{
  border-top:1px solid var(--border);
  padding:40px 24px; margin-top:40px;
}
.footer-grid{
  display:grid; grid-template-columns:2fr 1fr 1fr; gap:32px;
  max-width:var(--max); margin:0 auto;
}
@media(max-width:760px){.footer-grid{grid-template-columns:1fr; gap:24px;}}
.footer-grid h4{font-size:0.95rem; margin-bottom:12px;}
.footer-grid ul{list-style:none;}
.footer-grid li{margin-bottom:8px;}
.footer-grid a{color:var(--text-dim); font-size:0.9rem;}
.footer-grid a:hover{color:var(--accent);}
.footer-bottom{
  text-align:center; color:var(--text-dim); font-size:0.85rem;
  margin-top:32px; padding-top:24px; border-top:1px solid var(--border);
  max-width:var(--max); margin-left:auto; margin-right:auto;
}

/* Blog */
.blog-card{
  background:var(--card); border:1px solid var(--border);
  border-radius:var(--radius); padding:24px;
  display:flex; flex-direction:column; gap:8px;
}
.blog-card .tag{color:var(--accent); font-size:0.8rem; font-weight:600; text-transform:uppercase; letter-spacing:0.05em;}
.blog-card h3{font-size:1.15rem;}
.blog-card p{color:var(--text-dim); font-size:0.9rem;}

.article{max-width:760px; margin:0 auto; padding:40px 24px;}
.article h1{font-size:clamp(1.8rem,4vw,2.6rem); margin-bottom:16px;}
.article .meta{color:var(--text-dim); font-size:0.9rem; margin-bottom:32px;}
.article h2{font-size:1.4rem; margin:32px 0 12px;}
.article p{margin-bottom:16px; color:var(--text-dim);}
.article ul, .article ol{margin:0 0 16px 24px; color:var(--text-dim);}
.article li{margin-bottom:6px;}
.article strong{color:var(--text);}

/* Reduced motion */
@media(prefers-reduced-motion:reduce){
  *{animation:none !important; transition:none !important;}
}

/* Focus visibility */
a:focus-visible, button:focus-visible, select:focus-visible, input:focus-visible{
  outline:2px solid var(--accent); outline-offset:2px;
}