:root{
      --yellow:#FCD116;
      --blue:#003893;
      --red:#CE1126;

      --ink:#1f2937;
      --muted:#6b7280;
      --bg:#f6f7fb;

      --glass: rgba(255,255,255,.75);
      --glass2: rgba(255,255,255,.55);

      --shadow: 0 18px 50px rgba(0,0,0,.14);
      --shadow2: 0 12px 30px rgba(0,0,0,.10);

      --radius: 18px;
    }

    *{ margin:0; padding:0; box-sizing:border-box; }
    html,body{ height:100%; }
    body{
      font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
      background: radial-gradient(1200px 700px at 80% 10%, rgba(0,56,147,.08), transparent 55%),
                  radial-gradient(900px 500px at 10% 30%, rgba(252,209,22,.10), transparent 55%),
                  var(--bg);
      color: var(--ink);
      line-height: 1.6;
      overflow-x:hidden;
    }

    h1,h2,h3,h4{ font-family:Poppins, Inter, sans-serif; }
    a{ color: inherit; text-decoration:none; }

    /* Tricolor premium */
    .co-stripe{
      height: 12px;
      border-radius: 999px;
      margin: 10px 20px 0;
      background: linear-gradient(90deg, var(--yellow) 0 50%, var(--blue) 50% 75%, var(--red) 75% 100%);
      box-shadow: 0 10px 22px rgba(0,0,0,.08);
      position: relative;
      overflow: hidden;
    }
    .co-stripe::after{
      content:"";
      position:absolute; inset:-45%;
      background:
        radial-gradient(circle at 25% 30%, rgba(255,255,255,.35), transparent 42%),
        radial-gradient(circle at 70% 60%, rgba(255,255,255,.18), transparent 48%);
      filter: blur(10px);
    }

    /* Header */
    header{
      position: sticky;
      top:0;
      z-index: 1000;
      background: rgba(255,255,255,.78);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(0,0,0,.06);
    }
    .nav-container{
      max-width: 1180px;
      margin: 0 auto;
      padding: 14px 18px;
      display:flex;
      align-items:center;
      justify-content: space-between;
      gap: 12px;
    }
    .logo{
      display:flex;
      align-items:center;
      gap: 12px;
      min-width: 240px;
    }
    .logo img{
      height: 54px;
      transition: transform .25s ease;
    }
    .logo:hover img{ transform: scale(1.03); }

    .country-pills{
      display:flex;
      align-items:center;
      gap: 8px;
      padding: 6px;
      border-radius: 999px;
      background: rgba(0,0,0,.03);
      border: 1px solid rgba(0,0,0,.06);
    }
    .pill{
      display:flex;
      align-items:center;
      gap: 8px;
      padding: 8px 10px;
      border-radius: 999px;
      font-weight: 700;
      font-size: .92rem;
      color: var(--ink);
      transition: transform .2s ease, background .2s ease;
    }
    .pill img{
      width: 22px; height: 22px;
      border-radius: 50%;
      object-fit: cover;
      border: 1px solid rgba(0,0,0,.08);
    }
    .pill:hover{ transform: translateY(-1px); background: rgba(255,255,255,.8); }
    .pill.active{
      background: rgba(0,56,147,.10);
      border: 1px solid rgba(0,56,147,.20);
      box-shadow: 0 8px 18px rgba(0,56,147,.10);
    }

    .login-btn{
      border: 0;
      cursor: pointer;
      padding: 10px 14px;
      border-radius: 12px;
      font-weight: 800;
      color: white;
      background: linear-gradient(135deg, var(--blue), #2a63ff);
      box-shadow: 0 10px 24px rgba(0,56,147,.22);
      display:flex;
      align-items:center;
      gap: 10px;
      transition: transform .2s ease, box-shadow .2s ease;
      white-space: nowrap;
    }
    .login-btn:hover{
      transform: translateY(-2px);
      box-shadow: 0 14px 28px rgba(0,56,147,.28);
    }

    /* Hero */
    .hero{
      position: relative;
      overflow: hidden;
      color: #fff;
      padding: 52px 0 28px;
      background:
        radial-gradient(1100px 520px at 18% 8%, rgba(252,209,22,.25), transparent 56%),
        radial-gradient(900px 500px at 90% 35%, rgba(206,17,38,.18), transparent 56%),
        linear-gradient(135deg, #003893, #002b7a, #001a52);
    }
    .hero::before{
      content:"";
      position:absolute; inset:0;
      background:
        linear-gradient(rgba(255,255,255,.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.08) 1px, transparent 1px);
      background-size: 26px 26px;
      mask-image: radial-gradient(circle at 40% 30%, black 0 55%, transparent 80%);
      opacity:.35;
      pointer-events:none;
    }

    .hero-inner{
      max-width: 1180px;
      margin: 0 auto;
      padding: 0 18px;
      text-align: center;
      position: relative;
      z-index: 1;
    }

    .kicker{
      display:inline-flex;
      align-items:center;
      gap: 10px;
      padding: 8px 12px;
      border-radius: 999px;
      background: rgba(255,255,255,.10);
      border: 1px solid rgba(255,255,255,.18);
      backdrop-filter: blur(10px);
      font-weight: 700;
      margin-bottom: 14px;
    }
    .kdot{
      width:10px; height:10px; border-radius:50%;
      background: var(--yellow);
      box-shadow: 0 0 0 4px rgba(252,209,22,.18);
    }
    .kicker small{ opacity:.9; font-weight:700; }

    .hero h1{
      font-size: clamp(2rem, 3.1vw, 3rem);
      letter-spacing: -0.8px;
      line-height: 1.15;
      text-shadow: 0 12px 32px rgba(0,0,0,.25);
      margin-bottom: 10px;
    }
    .hero h1 span{
      color: var(--yellow);
      text-shadow: 0 10px 26px rgba(252,209,22,.18);
    }
    .hero p{
      max-width: 780px;
      margin: 0 auto;
      opacity: .92;
      font-weight: 500;
    }

    /* Layout */
    .container{
      max-width: 1180px;
      margin: 0 auto;
      padding: 0 18px;
    }

    /* Calculator card */
    .calculator-card{
      margin: -46px auto 26px;
      max-width: 520px;
      background: var(--glass);
      backdrop-filter: blur(14px);
      border-radius: var(--radius);
      padding: 26px;
      box-shadow: var(--shadow);
      border: 1px solid rgba(255,255,255,.35);
      position: relative;
      transform: translateY(18px);
      opacity: 0;
      transition: transform .5s ease, opacity .5s ease;
    }
    .calculator-card.visible{
      transform: translateY(0);
      opacity: 1;
    }
    .calculator-card::before{
      content:"";
      position:absolute; inset:-1px;
      border-radius: var(--radius);
      padding: 1px;
      background: linear-gradient(120deg, rgba(252,209,22,.95), rgba(0,56,147,.70), rgba(206,17,38,.75));
      -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
      -webkit-mask-composite: xor;
      mask-composite: exclude;
      pointer-events:none;
    }

    .calc-title{
      display:flex;
      align-items:center;
      justify-content:center;
      gap: 10px;
      margin-bottom: 14px;
      color: var(--blue);
      font-size: 1.35rem;
      font-weight: 800;
    }

    .submeta{
      display:flex;
      justify-content: space-between;
      align-items:center;
      gap: 10px;
      margin: 10px 0 16px;
      color: var(--muted);
      font-size: .92rem;
      font-weight: 600;
    }
    .chip{
      display:inline-flex;
      align-items:center;
      gap: 8px;
      padding: 6px 10px;
      border-radius: 999px;
      background: rgba(0,56,147,.08);
      border: 1px solid rgba(0,56,147,.18);
      color: var(--blue);
      font-weight: 800;
      white-space: nowrap;
    }
    .chip .dot{
      width: 8px; height: 8px; border-radius: 50%;
      background: #16a34a;
      box-shadow: 0 0 0 4px rgba(22,163,74,.16);
    }

    .form-group{ margin-bottom: 14px; }
    label{
      display:block;
      margin-bottom: 7px;
      font-weight: 800;
      color: #0f172a;
    }

    .currency-input-container{
      position: relative;
      transition: transform .2s ease;
    }
    .currency-input-container:focus-within{ transform: translateY(-1px); }

    .currency-flag{
      position:absolute;
      left: 12px;
      top: 50%;
      transform: translateY(-50%);
      width: 26px; height: 26px;
      border-radius: 50%;
      background-size: cover;
      background-position: center;
      border: 1px solid rgba(0,0,0,.10);
      box-shadow: 0 8px 14px rgba(0,0,0,.08);
    }

    .form-control{
      width: 100%;
      padding: 14px 14px 14px 50px;
      border-radius: 14px;
      border: 1px solid rgba(0,0,0,.10);
      background: rgba(245,248,255,.55);
      font-size: 1rem;
      outline: none;
      transition: box-shadow .2s ease, border-color .2s ease, background .2s ease;
      font-weight: 700;
    }
    .form-control:focus{
      border-color: rgba(0,56,147,.35);
      box-shadow: 0 0 0 4px rgba(0,56,147,.10);
      background: rgba(255,255,255,.85);
    }

    .btn-primary{
      width: 100%;
      border: 0;
      cursor: pointer;
      padding: 15px 14px;
      border-radius: 14px;
      font-weight: 900;
      font-size: 1rem;
      color: #fff;
      background: linear-gradient(135deg, var(--blue), #2a63ff);
      box-shadow: 0 14px 28px rgba(0,56,147,.22);
      display:flex;
      align-items:center;
      justify-content:center;
      gap: 10px;
      transition: transform .2s ease, box-shadow .2s ease, filter .2s ease;
      position: relative;
      overflow:hidden;
    }
    .btn-primary::after{
      content:"";
      position:absolute; inset:0;
      background: radial-gradient(380px 180px at 30% 30%, rgba(255,255,255,.18), transparent 55%);
      opacity:.75;
      pointer-events:none;
    }
    .btn-primary:hover{
      transform: translateY(-2px);
      box-shadow: 0 18px 34px rgba(0,56,147,.28);
      filter: saturate(1.05);
    }
    .btn-primary.success{ background: linear-gradient(135deg, #16a34a, #22c55e); }
    .btn-primary.error{ background: linear-gradient(135deg, #dc2626, #ef4444); }

    .calculating{ animation: pulse 1s infinite; }
    @keyframes pulse{
      0% { transform: translateY(-2px) scale(1); }
      50% { transform: translateY(-2px) scale(1.03); }
      100% { transform: translateY(-2px) scale(1); }
    }

    .exchange-pill{
      margin-top: 12px;
      padding: 10px 12px;
      border-radius: 999px;
      background: rgba(0,56,147,.08);
      border: 1px solid rgba(0,56,147,.18);
      display:flex;
      gap: 10px;
      align-items:center;
      justify-content:center;
      color: var(--blue);
      font-weight: 800;
      text-align:center;
    }
    .exchange-pill i{ color: var(--red); }

    /* Result */
    .result-card{
      margin-top: 16px;
      padding: 16px;
      border-radius: 16px;
      background: linear-gradient(135deg, rgba(255,255,255,.92), rgba(255,245,245,.85));
      border: 1px solid rgba(0,0,0,.06);
      border-left: 4px solid var(--blue);
      box-shadow: var(--shadow2);
      transform: scale(.96);
      opacity: 0;
      transition: transform .45s cubic-bezier(.2,.8,.2,1), opacity .45s ease;
    }
    .result-card.show{
      transform: scale(1);
      opacity: 1;
    }
    .result-header{
      display:flex;
      align-items:center;
      justify-content: space-between;
      gap: 10px;
      margin-bottom: 6px;
      color: var(--blue);
      font-weight: 900;
    }
    .result-amount{
      text-align:center;
      font-size: 2.35rem;
      font-weight: 900;
      letter-spacing: -0.6px;
      margin: 10px 0 6px;
      background: linear-gradient(90deg, var(--blue), var(--red));
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }
    .result-details{
      text-align:center;
      color: var(--muted);
      font-weight: 700;
      font-size: .95rem;
      display:grid;
      gap: 6px;
    }
    .result-details p{
      display:flex;
      align-items:center;
      justify-content:center;
      gap: 8px;
    }

    /* Sections */
    .features-section{
      margin: 34px 0 10px;
    }
    .section-title{
      text-align:center;
      margin: 0 auto 18px;
      max-width: 820px;
    }
    .section-title h2{
      font-size: clamp(1.55rem, 2.2vw, 2.2rem);
      letter-spacing: -0.4px;
      margin-bottom: 8px;
    }
    .section-title p{ color: var(--muted); font-weight: 600; }

    .features-grid{
      display:grid;
      grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
      gap: 16px;
    }
    .feature-card{
      background: rgba(255,255,255,.78);
      backdrop-filter: blur(10px);
      border: 1px solid rgba(0,0,0,.06);
      border-radius: 16px;
      padding: 18px;
      box-shadow: 0 12px 26px rgba(0,0,0,.06);
      transform: translateY(14px);
      opacity: 0;
      transition: transform .5s ease, opacity .5s ease, box-shadow .25s ease;
      position: relative;
      overflow:hidden;
    }
    .feature-card.visible{ transform: translateY(0); opacity: 1; }
    .feature-card:hover{ box-shadow: 0 18px 34px rgba(0,0,0,.10); transform: translateY(-2px); }

    .feature-icon{
      width: 54px; height: 54px;
      border-radius: 16px;
      display:flex;
      align-items:center;
      justify-content:center;
      color:#fff;
      background: linear-gradient(135deg, var(--blue), #2a63ff);
      box-shadow: 0 14px 26px rgba(0,56,147,.18);
      margin: 0 auto 12px;
      font-size: 1.3rem;
    }
    .feature-card:nth-child(2) .feature-icon{ background: linear-gradient(135deg, var(--red), #ff5a5a); }
    .feature-card:nth-child(3) .feature-icon{ background: linear-gradient(135deg, #0ea5e9, var(--blue)); }
    .feature-card:nth-child(4) .feature-icon{ background: linear-gradient(135deg, var(--yellow), #ffd24d); color:#111827; }

    .feature-card h3{
      text-align:center;
      margin-bottom: 6px;
      color: #0f172a;
      letter-spacing: -0.2px;
    }
    .feature-card p{ text-align:center; color: var(--muted); font-weight: 600; }

    /* Testimonials */
    .testimonials{
      margin: 28px 0 0;
      padding: 34px 0 22px;
      background: linear-gradient(135deg, rgba(0,56,147,.06), rgba(255,255,255,.35));
      border-top: 1px solid rgba(0,0,0,.06);
      border-bottom: 1px solid rgba(0,0,0,.06);
    }
    .testimonials-container{
      display:flex;
      flex-wrap: wrap;
      justify-content:center;
      gap: 16px;
    }
    .testimonial-card{
      width: min(420px, 100%);
      background: rgba(255,255,255,.82);
      backdrop-filter: blur(10px);
      border: 1px solid rgba(0,0,0,.06);
      border-radius: 16px;
      padding: 18px;
      box-shadow: 0 12px 26px rgba(0,0,0,.08);
      transform: translateY(14px);
      opacity: 0;
      transition: transform .5s ease, opacity .5s ease, box-shadow .25s ease;
      position: relative;
      overflow:hidden;
    }
    .testimonial-card.visible{ transform: translateY(0); opacity: 1; }
    .testimonial-card:hover{ transform: translateY(-2px); box-shadow: 0 18px 34px rgba(0,0,0,.12); }

    .rating{ color: var(--yellow); font-size: 1.05rem; margin-bottom: 10px; }
    .testimonial-text{
      color: #111827;
      font-weight: 650;
      margin-bottom: 14px;
      position: relative;
    }
    .testimonial-author{
      display:flex;
      align-items:center;
      gap: 12px;
    }
    .testimonial-author img{
      width: 48px; height: 48px;
      border-radius: 50%;
      object-fit: cover;
      border: 2px solid rgba(206,17,38,.45);
    }
    .author-info h4{
      color: var(--blue);
      margin-bottom: 2px;
      font-size: 1rem;
    }
    .author-info p{ color: var(--muted); font-weight: 650; font-size: .92rem; }

    /* Footer */
    footer{
      background: #0b1220;
      color: #e5e7eb;
      padding: 34px 0 18px;
      position: relative;
    }
    footer::before{
      content:"";
      position:absolute;
      top:0; left:0; right:0;
      height: 5px;
      background: linear-gradient(90deg, var(--yellow) 0 33%, var(--blue) 33% 66%, var(--red) 66% 100%);
    }
    .footer-container{
      max-width: 1180px;
      margin: 0 auto;
      padding: 0 18px;
      display:grid;
      grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
      gap: 16px;
    }
    .footer-column h3{
      color:#fff;
      margin-bottom: 10px;
      letter-spacing: -0.2px;
    }
    .footer-links{ list-style:none; display:grid; gap: 8px; }
    .footer-links a{
      color:#cbd5e1;
      font-weight: 650;
      transition: color .2s ease, transform .2s ease;
      display:inline-flex;
      align-items:center;
      gap: 8px;
    }
    .footer-links a:hover{ color:#fff; transform: translateX(2px); }

    .social-links{
      display:flex;
      gap: 10px;
      margin-top: 10px;
    }
    .social-links a{
      width: 40px; height: 40px;
      border-radius: 999px;
      display:flex;
      align-items:center;
      justify-content:center;
      background: rgba(255,255,255,.08);
      color:#fff;
      transition: transform .2s ease, background .2s ease;
    }
    .social-links a:hover{
      transform: translateY(-2px);
      background: rgba(255,255,255,.14);
      color: var(--yellow);
    }
    .copyright{
      text-align:center;
      margin-top: 16px;
      padding-top: 14px;
      border-top: 1px solid rgba(255,255,255,.12);
      color:#9ca3af;
      font-weight: 650;
      font-size: .92rem;
    }

    /* PWA install button */
    #install-btn{
      position: fixed;
      right: 18px;
      bottom: 18px;
      border: 0;
      cursor: pointer;
      padding: 12px 16px;
      border-radius: 999px;
      font-weight: 900;
      color:#fff;
      background: linear-gradient(135deg, var(--blue), #2a63ff);
      box-shadow: 0 18px 38px rgba(0,0,0,.28);
      display: none;
      z-index: 9999;
      transition: transform .2s ease;
    }
    #install-btn:hover{ transform: translateY(-2px); }

    /* iOS modal */
    #ios-modal{
      display:none;
      position: fixed;
      right: 18px;
      bottom: 86px;
      max-width: 320px;
      background: rgba(255,255,255,.92);
      backdrop-filter: blur(14px);
      border: 1px solid rgba(0,0,0,.08);
      border-radius: 16px;
      padding: 16px;
      box-shadow: 0 20px 40px rgba(0,0,0,.22);
      z-index: 9999;
      animation: slideUp .35s ease-out;
    }
    #ios-modal h3{ color: var(--blue); margin-bottom: 8px; }
    #ios-modal ul{ padding-left: 18px; color: var(--ink); font-weight: 650; }
    #ios-modal li{ margin-bottom: 6px; }
    #ios-modal button{
      margin-top: 10px;
      width: 100%;
      border: 0;
      cursor: pointer;
      padding: 10px 12px;
      border-radius: 12px;
      font-weight: 900;
      color:#fff;
      background: linear-gradient(135deg, var(--blue), #2a63ff);
    }

    @keyframes slideUp{
      from{ transform: translateY(18px); opacity: 0; }
      to{ transform: translateY(0); opacity: 1; }
    }

    @media (max-width: 768px){
      .logo{ min-width: unset; }
      .country-pills span{ display:none; }
      .calculator-card{ padding: 18px; }
      .result-amount{ font-size: 2.1rem; }
    }