/* ============================================================
   Paytube — shared design system
   Tokens baked to current look: royal blue #2536c9, radius 10, spacing 80
   ============================================================ */
:root{
  --canvas: oklch(0.986 0.004 95);
  --surface: #ffffff;
  --ink: oklch(0.22 0.045 264);
  --ink-2: oklch(0.40 0.04 264);
  --muted: oklch(0.55 0.022 264);
  --line: oklch(0.925 0.008 264);
  --line-2: oklch(0.88 0.01 264);
  --brand: #003087;
  --brand-press: color-mix(in oklab, var(--brand), black 18%);
  --brand-tint: color-mix(in oklab, var(--brand), white 90%);
  --brand-tint-2: color-mix(in oklab, var(--brand), white 82%);
  --accent: #8be584;
  --accent-deep: color-mix(in oklab, var(--accent), black 42%);
  --accent-tint: color-mix(in oklab, var(--accent), white 84%);
  --shadow-sm: 0 1px 2px rgba(14,20,48,.06), 0 1px 1px rgba(14,20,48,.04);
  --shadow-md: 0 12px 28px -10px rgba(14,20,48,.18), 0 4px 10px -6px rgba(14,20,48,.10);
  --shadow-lg: 0 40px 80px -28px rgba(14,20,48,.34), 0 12px 28px -18px rgba(14,20,48,.20);
  --r-sm: 7px; --r-md: 10px; --r-lg: 13px; --r-xl: 18px;
  --sec-pad: 80px;
  --maxw: 1200px;
  --display: "Inter", system-ui, sans-serif;
  --body: "Inter", system-ui, sans-serif;
  --sec-pad: 96px;
  --r-sm: 10px; --r-md: 16px; --r-lg: 24px; --r-xl: 32px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--body);background:var(--canvas);color:var(--ink);line-height:1.5;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{font-family:var(--display);font-weight:700;line-height:1.05;letter-spacing:-0.02em;color:var(--ink)}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}
.eyebrow{font-size:13px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--brand)}
.muted{color:var(--muted)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;justify-content:center;
  font-family:var(--body);font-weight:600;font-size:15px;
  padding:13px 22px;border-radius:999px;border:1px solid transparent;cursor:pointer;
  transition:transform .15s ease, background .15s ease, box-shadow .15s ease, border-color .15s;white-space:nowrap;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px -6px color-mix(in oklab, var(--brand), transparent 45%)}
.btn-primary:hover{background:var(--brand-press);box-shadow:0 10px 22px -8px color-mix(in oklab, var(--brand), transparent 40%)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line-2)}
.btn-ghost:hover{border-color:var(--ink);background:#fff}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:oklch(0.30 0.05 264)}
.btn-lg{padding:16px 28px;font-size:16px}
.btn-block{width:100%}

/* ---------- nav ---------- */
.nav{position:sticky;top:0;z-index:60;background:oklch(0.986 0.004 95 / .82);backdrop-filter:blur(14px) saturate(1.2);border-bottom:1px solid transparent;transition:border-color .2s, box-shadow .2s}
.nav.scrolled{border-color:var(--line);box-shadow:0 1px 0 rgba(14,20,48,.03)}
.nav-inner{display:flex;align-items:center;gap:26px;height:74px}
.logo{display:inline-flex;align-items:center;font-family:var(--display);font-weight:800;font-size:25px;letter-spacing:-0.03em}
.logo img{height:36px;width:auto;display:block}
.logo .pay{color:var(--ink)}
.logo .tube{color:#fff;background:var(--brand);padding:1px 9px 2px;border-radius:9px;margin-left:1px}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-links a, .nav-drop>button{
  font-size:15px;font-weight:500;color:var(--ink-2);padding:9px 11px;border-radius:9px;white-space:nowrap;
  background:none;border:none;font-family:var(--body);cursor:pointer;display:inline-flex;align-items:center;gap:5px;transition:color .15s,background .15s;
}
.nav-links a:hover, .nav-drop>button:hover{color:var(--ink);background:color-mix(in oklab, var(--brand), transparent 92%)}
.nav-links a.active{color:var(--brand);background:var(--brand-tint)}
.nav-drop>button.active{color:var(--brand)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:10px}
.nav-login{font-weight:600;font-size:15px;color:var(--ink);padding:9px 14px;display:inline-flex;align-items:center;gap:7px}
.nav-login:hover{color:var(--brand)}
.nav-mobile-actions{display:none}
.nav-drop{position:relative}
.nav-drop .menu{
  position:absolute;top:calc(100% + 8px);left:0;min-width:252px;background:#fff;border:1px solid var(--line);
  border-radius:16px;box-shadow:var(--shadow-md);padding:8px;opacity:0;visibility:hidden;transform:translateY(6px);
  transition:opacity .16s, transform .16s, visibility .16s;
}
.nav-drop:hover .menu{opacity:1;visibility:visible;transform:translateY(0)}
.nav-drop .menu a{display:flex;flex-direction:column;gap:1px;padding:10px 12px;border-radius:10px;width:100%}
.nav-drop .menu a:hover{background:var(--brand-tint)}
.nav-drop .menu a strong{font-size:14.5px;font-weight:600;color:var(--ink)}
.nav-drop .menu a span{font-size:12.5px;color:var(--muted)}
.caret{width:14px;height:14px;opacity:.7}

/* ---------- page header banner ---------- */
.page-head{position:relative;overflow:hidden;padding:58px 0 48px}
.page-head::before{
  content:"";position:absolute;inset:0;z-index:0;background:
    radial-gradient(820px 460px at 90% -20%, color-mix(in oklab, var(--brand), transparent 88%), transparent 60%),
    radial-gradient(560px 360px at 4% 10%, color-mix(in oklab, var(--accent), transparent 90%), transparent 62%);
  pointer-events:none;
}
.page-head .wrap{position:relative;z-index:1}
.crumb{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);margin-bottom:16px}
.crumb a:hover{color:var(--brand)}
.crumb span{opacity:.5}
.page-head h1{font-size:clamp(36px,4.6vw,58px)}
.page-head .lead{font-size:19px;color:var(--ink-2);max-width:600px;margin-top:16px;line-height:1.55}

/* ---------- sections ---------- */
.section{padding:var(--sec-pad) 0}

/* ---------- form controls ---------- */
.fld{display:flex;flex-direction:column;gap:7px;margin-bottom:16px}
.fld label{font-size:13px;font-weight:600;color:var(--ink-2)}
.fld .hint{font-size:12px;color:var(--muted);font-weight:500}
.control, .select-wrap select{
  width:100%;font-family:var(--body);font-size:15px;font-weight:500;color:var(--ink);
  background:var(--surface);border:1px solid var(--line-2);border-radius:10px;padding:12px 14px;appearance:none;outline:none;
  transition:border-color .15s, box-shadow .15s;
}
textarea.control{resize:vertical;min-height:120px;line-height:1.5}
.control::placeholder{color:var(--muted)}
.control:focus, .select-wrap select:focus{border-color:var(--brand);box-shadow:0 0 0 3px color-mix(in oklab, var(--brand), transparent 86%)}
.select-wrap{position:relative}
.select-wrap select{padding-right:38px;cursor:pointer}
.select-wrap .arw{position:absolute;right:13px;top:50%;transform:translateY(-50%);width:16px;height:16px;color:var(--muted);pointer-events:none}
.num-input{position:relative;display:flex;align-items:center}
.num-input .pre{position:absolute;left:13px;font-size:15px;font-weight:600;color:var(--muted);pointer-events:none}
.num-input.euro .control{padding-left:26px}
.fld-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.seg{display:flex;gap:4px;background:var(--canvas);border:1px solid var(--line-2);border-radius:10px;padding:4px}
.seg button{flex:1;font-family:var(--body);font-size:13.5px;font-weight:600;color:var(--muted);background:none;border:none;border-radius:7px;padding:9px;cursor:pointer;transition:.15s}
.seg button.on{background:#fff;color:var(--ink);box-shadow:var(--shadow-sm)}
.check{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--ink-2);line-height:1.45;cursor:pointer}
.check input{appearance:none;width:19px;height:19px;flex:none;margin-top:1px;border:1.5px solid var(--line-2);border-radius:6px;background:var(--surface);cursor:pointer;transition:.15s;position:relative}
.check input:checked{background:var(--brand);border-color:var(--brand)}
.check input:checked::after{content:"";position:absolute;left:5.5px;top:2px;width:5px;height:9px;border:solid #fff;border-width:0 2px 2px 0;transform:rotate(45deg)}
.check a{color:var(--brand);font-weight:600}

/* ---------- card ---------- */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-xl);box-shadow:var(--shadow-sm)}

/* ---------- breakdown bar (calculator) ---------- */
.bar{display:flex;height:10px;border-radius:999px;overflow:hidden;background:var(--line)}
.bar i{display:block;height:100%}
.legend{display:flex;flex-wrap:wrap;gap:10px 18px}
.legend span{display:flex;align-items:center;gap:7px;font-size:13px;color:var(--ink-2);font-variant-numeric:tabular-nums}
.legend span::before{content:"";width:10px;height:10px;border-radius:3px;background:var(--c)}

/* ---------- footer ---------- */
.footer{background:var(--ink);color:oklch(0.80 0.02 264);padding:72px 0 36px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer .logo .pay{color:#fff}
.footer .logo img{height:36px;width:auto;display:block}
.foot-about{font-size:14.5px;color:oklch(0.74 0.02 264);max-width:300px;margin:18px 0 22px;line-height:1.6}
.foot-col h4{color:#fff;font-size:13px;letter-spacing:.1em;text-transform:uppercase;font-family:var(--body);font-weight:700;margin-bottom:16px}
.foot-col a{display:block;font-size:14.5px;color:oklch(0.78 0.02 264);padding:6px 0;transition:color .15s}
.foot-col a:hover{color:#fff}
.foot-bottom{display:flex;justify-content:space-between;align-items:center;gap:18px;flex-wrap:wrap;margin-top:54px;padding-top:26px;border-top:1px solid oklch(0.40 0.04 264 / .5);font-size:13px;color:oklch(0.66 0.02 264)}
.soc{display:flex;gap:10px}
.soc a{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;background:oklch(0.40 0.04 264 / .4);color:#fff;transition:.15s}
.soc a:hover{background:var(--brand)}
.soc svg{width:17px;height:17px}

/* ---------- responsive ---------- */
.nav-toggle{display:none;align-items:center;justify-content:center;width:42px;height:42px;border:1px solid var(--line-2);border-radius:10px;background:#fff;cursor:pointer;color:var(--ink)}
.nav-toggle svg{width:20px;height:20px}
@media (max-width:980px){
  .foot-grid{grid-template-columns:1fr 1fr}
  .nav-toggle{display:inline-flex}
  .nav-links{display:none;position:absolute;top:calc(100% + 1px);left:0;right:0;background:#fff;border-bottom:1px solid var(--line);padding:12px 28px 18px;flex-direction:column;align-items:stretch;box-shadow:var(--shadow-md)}
  .nav-links.open{display:flex}
  .nav-inner{position:relative;flex-wrap:wrap}
  .nav-drop .menu{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border:none;padding:0 0 0 12px;margin-top:4px;display:none}
  .nav-drop.open .menu{display:block}
  .nav-desktop-only{display:none!important}
  .nav-mobile-actions{display:flex;flex-direction:row;gap:10px;margin-top:8px;padding:16px 12px 0;border-top:1px solid var(--line)}
  .nav-mobile-actions .btn{flex:1;text-align:center;justify-content:center;padding:12px 16px;font-size:15px;font-weight:600;box-shadow:none!important}
  .nav-mobile-actions .btn-ghost{border:1.5px solid var(--line-2);color:var(--ink);background:#fff}
  .nav-mobile-actions .btn-primary{background:var(--brand);color:#fff;box-shadow:none!important}
}
@media (max-width:560px){
  .wrap{padding:0 18px}
  .foot-grid{grid-template-columns:1fr}
  .fld-row{grid-template-columns:1fr}
}