/* ===== CurrencyExchanger — Premium Fintech Design ===== */
:root{
  --indigo:#4f46e5; --indigo-dark:#3730a3; --navy:#0f172a; --navy-2:#1e1b4b;
  --gold:#f59e0b; --gold-light:#fbbf24; --emerald:#10b981;
  --slate-50:#f8fafc; --slate-100:#f1f5f9; --slate-200:#e2e8f0;
  --slate-600:#475569; --slate-700:#334155; --slate-900:#0f172a;
  --radius:1.25rem;
  --shadow-lg:0 20px 50px -12px rgba(79,70,229,.25);
  --shadow-card:0 10px 30px -8px rgba(15,23,42,.12);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;color:var(--slate-900);background:var(--slate-50);line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:var(--indigo);text-decoration:none}
img{max-width:100%}
.container{max-width:1140px;margin:0 auto;padding:0 1.25rem}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.85);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--slate-200)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:1rem}
.brand{display:flex;align-items:center;gap:.7rem;font-weight:800;font-size:1.25rem;color:var(--navy)}
.brand img{height:42px;width:42px;border-radius:12px;box-shadow:var(--shadow-card)}
.brand b{background:linear-gradient(120deg,var(--indigo),#b45309);-webkit-background-clip:text;background-clip:text;color:transparent}
.main-nav{display:flex;gap:1.5rem;align-items:center}
.main-nav a{color:var(--slate-700);font-weight:600;font-size:.95rem;position:relative;transition:color .2s}
.main-nav a:hover{color:var(--indigo)}
.main-nav a.active{color:var(--indigo)}
.main-nav a.active::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:3px;border-radius:3px;background:linear-gradient(90deg,var(--indigo),var(--gold))}
.header-actions{display:flex;gap:.6rem;align-items:center}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;font-weight:700;border-radius:999px;padding:.65rem 1.4rem;font-size:.95rem;cursor:pointer;border:0;transition:transform .18s ease,box-shadow .18s ease,background .18s ease}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn-outline{background:#fff;color:var(--indigo);border:2px solid var(--indigo)}
.btn-outline:hover{box-shadow:var(--shadow-lg)}
.btn-primary{background:linear-gradient(120deg,var(--indigo),var(--indigo-dark));color:#fff;box-shadow:var(--shadow-lg)}
.btn-gold{background:linear-gradient(120deg,var(--gold),#d97706);color:#fff;box-shadow:0 12px 30px -8px rgba(245,158,11,.5)}
.btn-lg{padding:.9rem 2rem;font-size:1.05rem}
.mobile-toggle{display:none;background:none;border:0;font-size:1.6rem;cursor:pointer;color:var(--navy)}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:radial-gradient(1000px 500px at 15% 10%,rgba(79,70,229,.35),transparent 60%),radial-gradient(800px 500px at 85% 90%,rgba(245,158,11,.25),transparent 60%),linear-gradient(160deg,#0f172a 0%,#1e1b4b 60%,#312e81 100%);color:#fff;padding:4.5rem 0 5.5rem}
.orb{position:absolute;border-radius:50%;filter:blur(70px);opacity:.5;animation:float 9s ease-in-out infinite}
.orb-1{width:340px;height:340px;background:#4f46e5;top:-90px;left:-70px}
.orb-2{width:280px;height:280px;background:#f59e0b;bottom:-70px;right:8%;animation-delay:-3s}
.orb-3{width:180px;height:180px;background:#10b981;top:38%;left:55%;animation-delay:-6s;opacity:.3}
@keyframes float{0%,100%{transform:translateY(0) scale(1)}50%{transform:translateY(-34px) scale(1.06)}}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:3rem;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:.5rem;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);padding:.4rem 1rem;border-radius:999px;font-size:.82rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;animation:fadeSlideIn .7s ease both}
.hero h1{font-size:clamp(2.1rem,4.5vw,3.4rem);line-height:1.12;font-weight:800;margin:1.1rem 0;animation:fadeSlideIn .7s .1s ease both}
.hero h1 .grad{background:linear-gradient(100deg,#fbbf24,#f59e0b 40%,#fde68a);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{color:#c7d2fe;font-size:1.12rem;max-width:32rem;animation:fadeSlideIn .7s .2s ease both}
.hero-badges{display:flex;gap:1.4rem;margin-top:1.6rem;flex-wrap:wrap;animation:fadeSlideIn .7s .3s ease both}
.hero-badge{display:flex;align-items:center;gap:.5rem;font-size:.9rem;color:#e0e7ff;font-weight:600}
.hero-badge .dot{width:9px;height:9px;border-radius:50%;background:var(--emerald);box-shadow:0 0 10px var(--emerald);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
@keyframes fadeSlideIn{from{opacity:0;transform:translateY(26px)}to{opacity:1;transform:translateY(0)}}

/* ---------- Converter card ---------- */
.converter-card{background:rgba(255,255,255,.97);border-radius:1.6rem;padding:1.8rem;box-shadow:0 30px 70px -18px rgba(0,0,0,.45);color:var(--slate-900);animation:fadeSlideIn .8s .25s ease both;border:1px solid rgba(255,255,255,.4)}
.converter-card h2{font-size:1.25rem;margin-bottom:1.1rem;color:var(--navy)}
.conv-row{display:grid;grid-template-columns:1fr auto 1fr;gap:.7rem;align-items:end;margin-bottom:1rem}
.field label{display:block;font-size:.8rem;font-weight:700;color:var(--slate-600);margin-bottom:.35rem;text-transform:uppercase;letter-spacing:.05em}
.field input,.field select{width:100%;padding:.85rem 1rem;border:2px solid var(--slate-200);border-radius:.9rem;font-size:1.05rem;font-weight:600;color:var(--slate-900);background:#fff;transition:border-color .2s,box-shadow .2s;appearance:none}
.field input:focus,.field select:focus{outline:none;border-color:var(--indigo);box-shadow:0 0 0 4px rgba(79,70,229,.15)}
.swap-btn{width:52px;height:52px;border-radius:50%;border:0;background:linear-gradient(135deg,var(--indigo),var(--indigo-dark));color:#fff;font-size:1.3rem;cursor:pointer;box-shadow:var(--shadow-lg);transition:transform .3s ease;margin-bottom:.2rem}
.swap-btn:hover{transform:rotate(180deg) scale(1.08)}
.conv-result{background:linear-gradient(120deg,#eef2ff,#fff7ed);border-radius:1rem;padding:1.1rem 1.3rem;margin:1rem 0;border:1px dashed #c7d2fe}
.conv-result .amount{font-size:1.9rem;font-weight:800;color:var(--navy)}
.conv-result .meta{font-size:.88rem;color:var(--slate-600)}
.rate-line{display:flex;justify-content:space-between;font-size:.88rem;color:var(--slate-600);margin-top:.7rem}
.live-dot{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--emerald);margin-right:.4rem;animation:pulse 1.6s infinite}

/* ---------- Sections ---------- */
.section{padding:4.5rem 0}
.section-alt{background:#fff}
.section-title{text-align:center;max-width:40rem;margin:0 auto 2.8rem}
.section-title .kicker{color:var(--indigo);font-weight:800;text-transform:uppercase;letter-spacing:.1em;font-size:.82rem}
.section-title h2{font-size:clamp(1.7rem,3vw,2.4rem);margin:.5rem 0;color:var(--navy)}
.section-title p{color:var(--slate-600)}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:1.2rem}
.card{background:#fff;border-radius:var(--radius);padding:1.8rem;box-shadow:var(--shadow-card);border:1px solid var(--slate-100);transition:transform .25s ease,box-shadow .25s ease;position:relative;overflow:hidden}
.card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg)}
.card::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--indigo),var(--gold));opacity:0;transition:opacity .25s}
.card:hover::before{opacity:1}
.card .icon{width:54px;height:54px;border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:1.6rem;margin-bottom:1rem;background:linear-gradient(135deg,#eef2ff,#fff7ed)}
.card h3{font-size:1.15rem;margin-bottom:.5rem;color:var(--navy)}
.card p{color:var(--slate-600);font-size:.95rem}

/* ---------- Stats ---------- */
.stats{background:linear-gradient(135deg,var(--navy),var(--navy-2));border-radius:1.8rem;padding:3rem 2rem;color:#fff;display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem;text-align:center;position:relative;overflow:hidden}
.stats::after{content:"";position:absolute;width:400px;height:400px;border-radius:50%;background:radial-gradient(circle,rgba(245,158,11,.25),transparent 70%);top:-150px;right:-100px}
.stat .num{font-size:2.4rem;font-weight:800;background:linear-gradient(100deg,#fbbf24,#fde68a);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat .lbl{color:#c7d2fe;font-size:.92rem;margin-top:.3rem}

/* ---------- Popular pairs ---------- */
.pair-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}
.pair{background:#fff;border:1px solid var(--slate-200);border-radius:1rem;padding:1.1rem 1.3rem;display:flex;justify-content:space-between;align-items:center;transition:all .22s ease;cursor:pointer}
.pair:hover{border-color:var(--indigo);box-shadow:var(--shadow-card);transform:translateX(6px)}
.pair .p-name{font-weight:700;color:var(--navy)}
.pair .p-rate{font-weight:800;color:var(--indigo)}
.pair .p-change{font-size:.8rem;font-weight:700}
.up{color:var(--emerald)} .down{color:#ef4444}

/* ---------- Rates table ---------- */
.rates-table{width:100%;border-collapse:collapse;background:#fff;border-radius:1.2rem;overflow:hidden;box-shadow:var(--shadow-card)}
.rates-table th{background:var(--navy);color:#fff;text-align:left;padding:1rem 1.2rem;font-size:.85rem;text-transform:uppercase;letter-spacing:.06em}
.rates-table td{padding:.95rem 1.2rem;border-bottom:1px solid var(--slate-100);font-size:.95rem}
.rates-table tr:hover td{background:#f8fafc}
.flag{font-size:1.3rem;margin-right:.6rem}
.cur-code{font-weight:800;color:var(--navy)}
.cur-name{color:var(--slate-600);font-size:.85rem}

/* ---------- CTA ---------- */
.cta{background:linear-gradient(120deg,var(--indigo),#6d28d9 55%,#b45309);border-radius:1.8rem;padding:3.5rem 2.5rem;text-align:center;color:#fff;position:relative;overflow:hidden}
.cta::before{content:"";position:absolute;inset:0;background:radial-gradient(500px 250px at 50% -50px,rgba(255,255,255,.25),transparent)}
.cta h2{font-size:clamp(1.6rem,3vw,2.3rem);margin-bottom:.7rem;position:relative}
.cta p{color:#e0e7ff;margin-bottom:1.6rem;position:relative}
.cta .btn{position:relative}

/* ---------- Footer ---------- */
footer{background:var(--navy);color:#cbd5e1;padding:3.5rem 0 1.5rem;margin-top:4rem}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:2rem;margin-bottom:2.5rem}
.footer-brand img{height:46px;border-radius:12px;margin-bottom:.8rem}
.footer-brand p{font-size:.9rem;color:#94a3b8}
footer h4{color:#fff;font-size:1rem;margin-bottom:1rem}
footer ul{list-style:none}
footer ul li{margin-bottom:.55rem}
footer ul a{color:#94a3b8;font-size:.92rem;transition:color .2s}
footer ul a:hover{color:#fbbf24}
.footer-bottom{border-top:1px solid #1e293b;padding-top:1.4rem;display:flex;justify-content:space-between;flex-wrap:wrap;gap:.8rem;font-size:.85rem;color:#64748b}
.disclaimer{background:#0b1220;border:1px solid #1e293b;border-radius:.9rem;padding:1rem 1.2rem;font-size:.82rem;color:#64748b;margin-bottom:1.8rem}

/* ---------- Forms ---------- */
.form-card{max-width:480px;margin:0 auto;background:#fff;border-radius:1.6rem;padding:2.4rem;box-shadow:var(--shadow-lg);border:1px solid var(--slate-100)}
.form-card h1{font-size:1.6rem;color:var(--navy);margin-bottom:.4rem}
.form-card .sub{color:var(--slate-600);font-size:.95rem;margin-bottom:1.5rem}
.form-card .field{margin-bottom:1.1rem}
.form-card .btn{width:100%;margin-top:.4rem}
.form-note{text-align:center;font-size:.9rem;color:var(--slate-600);margin-top:1.2rem}
.form-msg{border-radius:.8rem;padding:.8rem 1rem;font-size:.9rem;margin-bottom:1rem;display:none}
.form-msg.ok{display:block;background:#ecfdf5;color:#065f46;border:1px solid #a7f3d0}
.form-msg.err{display:block;background:#fef2f2;color:#991b1b;border:1px solid #fecaca}

/* ---------- Article ---------- */
.article{max-width:760px;margin:0 auto;background:#fff;border-radius:1.4rem;padding:2.5rem;box-shadow:var(--shadow-card)}
.article h1{font-size:clamp(1.7rem,3.4vw,2.4rem);color:var(--navy);margin-bottom:.6rem;line-height:1.25}
.article .byline{color:var(--slate-600);font-size:.88rem;margin-bottom:1.8rem;padding-bottom:1.2rem;border-bottom:1px solid var(--slate-200)}
.article h2{font-size:1.45rem;color:var(--navy);margin:2rem 0 .8rem}
.article h3{font-size:1.15rem;color:var(--navy);margin:1.5rem 0 .6rem}
.article p{margin-bottom:1.1rem;color:var(--slate-700)}
.article ul,.article ol{margin:0 0 1.2rem 1.4rem;color:var(--slate-700)}
.article li{margin-bottom:.5rem}
.article table{width:100%;border-collapse:collapse;margin:1.3rem 0;font-size:.92rem}
.article th{background:var(--navy);color:#fff;padding:.7rem .9rem;text-align:left}
.article td{padding:.7rem .9rem;border-bottom:1px solid var(--slate-200)}
.article .tip{background:#eef2ff;border-left:4px solid var(--indigo);padding:1rem 1.2rem;border-radius:0 .8rem .8rem 0;margin:1.4rem 0;font-size:.95rem}
.breadcrumb{font-size:.85rem;color:var(--slate-600);margin-bottom:1.4rem}
.breadcrumb a{color:var(--indigo)}
.faq{margin-top:2rem}
.faq details{background:var(--slate-50);border:1px solid var(--slate-200);border-radius:.9rem;margin-bottom:.7rem;padding:1rem 1.2rem}
.faq summary{font-weight:700;cursor:pointer;color:var(--navy)}
.faq details p{margin:.7rem 0 0}
.guide-card{display:flex;gap:1.2rem;background:#fff;border-radius:1.1rem;padding:1.4rem;box-shadow:var(--shadow-card);border:1px solid var(--slate-100);margin-bottom:1.1rem;transition:transform .2s}
.guide-card:hover{transform:translateY(-4px)}
.guide-card .g-emoji{font-size:2rem}
.guide-card h3{margin-bottom:.3rem;color:var(--navy)}
.guide-card p{color:var(--slate-600);font-size:.92rem}

/* ---------- Reveal on scroll ---------- */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
.reveal.visible{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media(max-width:900px){
  .hero-inner{grid-template-columns:1fr}
  .grid-3,.grid-4{grid-template-columns:1fr 1fr}
  .stats{grid-template-columns:1fr 1fr}
  .pair-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .main-nav{display:none;position:absolute;top:72px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;padding:1rem 1.5rem;gap:0;border-bottom:1px solid var(--slate-200);box-shadow:var(--shadow-card)}
  .main-nav.open{display:flex}
  .main-nav a{padding:.8rem 0;border-bottom:1px solid var(--slate-100)}
  .mobile-toggle{display:block}
  .header-actions .btn-outline{display:none}
}
@media(max-width:560px){
  .grid-3,.grid-4,.pair-grid{grid-template-columns:1fr}
  .conv-row{grid-template-columns:1fr}
  .swap-btn{margin:0 auto;transform:rotate(90deg)}
  .swap-btn:hover{transform:rotate(270deg) scale(1.08)}
  .stats{grid-template-columns:1fr 1fr;padding:2rem 1rem}
  .section{padding:3rem 0}
}