:root{
  --paper:#FBF5F0;
  --surface:#FFFFFF;
  --ink:#141F25;
  --ink-soft:#4A4444;
  --rose-hero:#FBE1E1;   /* lighter than the badge, so the logo reads as a stamp */
  --rose-wash:#FCEAEC;   /* form band */
  --rose-deep:#C25B62;   /* links, focus, small accents */
  --hairline:#E7D4D3;
  --maxw:600px;

  --btn-bg:var(--ink);
  --btn-bg-hover:#0c151a;
  --btn-text:#FFFFFF;

  --err-text:#8a1c24;
  --err-bg:#FFFFFF;
  --err-border:#e6b6b9;

  --select-arrow:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23141F25' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
}

/* Dark mode, system preference, unless the visitor explicitly chose light. */
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --paper:#1B1717;
    --surface:#262020;
    --ink:#F3ECE7;
    --ink-soft:#C9BDB6;
    --rose-hero:#3A2226;
    --rose-wash:#241819;
    --rose-deep:#F0949D;
    --hairline:#3D3535;

    --btn-bg:#E88690;
    --btn-bg-hover:#F0949D;
    --btn-text:#201415;

    --err-text:#FF9AA3;
    --err-bg:#2A1519;
    --err-border:#5B2A30;

    --select-arrow:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23F3ECE7' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  }
}
/* Dark mode, explicit choice via the toggle -- wins even if the system is light. */
:root[data-theme="dark"]{
  --paper:#1B1717;
  --surface:#262020;
  --ink:#F3ECE7;
  --ink-soft:#C9BDB6;
  --rose-hero:#3A2226;
  --rose-wash:#241819;
  --rose-deep:#F0949D;
  --hairline:#3D3535;

  --btn-bg:#E88690;
  --btn-bg-hover:#F0949D;
  --btn-text:#201415;

  --err-text:#FF9AA3;
  --err-bg:#2A1519;
  --err-border:#5B2A30;

  --select-arrow:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23F3ECE7' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font:400 1.0625rem/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
h1,h2{font-family:Georgia,"Times New Roman",serif;font-weight:700;line-height:1.15;margin:0 0 .5em}
h1{font-size:clamp(1.9rem,1.2rem + 3.2vw,2.9rem)}
h2{font-size:clamp(1.4rem,1.1rem + 1.4vw,1.9rem)}
p{margin:0 0 1rem}
a{color:var(--rose-deep)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:3px solid var(--rose-deep);outline-offset:2px;border-radius:2px;
}
.band{width:100%;padding:clamp(2.5rem,1.5rem + 4vw,4.5rem) 20px}
.band > .inner{max-width:var(--maxw);margin:0 auto}
.band--hero{background:var(--rose-hero);text-align:center}
.band--form{background:var(--rose-wash)}
.band--paper{background:var(--paper)}

.logo{width:clamp(225px,50vw,300px);height:auto;margin:0 auto 1.5rem;display:block}
.band--hero p{color:var(--ink);font-size:1.125rem;margin:0 auto;max-width:34rem}

/* Light/dark logo swap: both images are in the DOM; CSS shows the right one,
   following the same three-state rule (system / explicit light / explicit
   dark) used for the color tokens above. */
.logo--dark{display:none}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]) .logo--light{display:none}
  :root:not([data-theme="light"]) .logo--dark{display:block}
}
:root[data-theme="dark"] .logo--light{display:none}
:root[data-theme="dark"] .logo--dark{display:block}
:root[data-theme="light"] .logo--light{display:block}
:root[data-theme="light"] .logo--dark{display:none}

.lede{font-size:1.0625rem}
.note{color:var(--ink-soft);font-size:.95rem}

form{background:var(--surface);border:1px solid var(--hairline);border-radius:12px;padding:clamp(1.25rem,1rem + 1.5vw,2rem);margin-top:1.5rem}
.field{margin-bottom:1.25rem}
label{display:block;font-weight:600;margin-bottom:.4rem}
.req{color:var(--rose-deep);font-weight:400}
input[type=text],input[type=email],select,textarea{
  width:100%;font:inherit;font-size:16px;color:var(--ink);background:var(--surface);
  border:1px solid var(--hairline);border-radius:8px;padding:.7rem .75rem;min-height:48px;
}
textarea{min-height:120px;resize:vertical}
select{appearance:none;background-image:var(--select-arrow);background-repeat:no-repeat;background-position:right .9rem center;padding-right:2.4rem}

.radios{display:flex;flex-wrap:wrap;gap:.5rem .75rem}
.radio,.check{display:flex;align-items:flex-start;gap:.6rem;font-weight:400;margin:0;padding:.55rem .2rem;cursor:pointer}
.radio input,.check input{width:22px;height:22px;margin:.1rem 0 0;flex:0 0 auto;accent-color:var(--rose-deep)}
.checks{display:flex;flex-direction:column;gap:.15rem;margin-top:.25rem}

.err{color:var(--err-text);font-size:.95rem;margin:.35rem 0 0}
.err--form{background:var(--err-bg);border:1px solid var(--err-border);border-left:4px solid var(--rose-deep);border-radius:8px;padding:.8rem 1rem;margin-bottom:1.25rem}
input[aria-invalid=true],select[aria-invalid=true],textarea[aria-invalid=true]{border-color:var(--rose-deep)}

button{
  font:inherit;font-weight:700;font-size:1.0625rem;color:var(--btn-text);background:var(--btn-bg);
  border:0;border-radius:8px;padding:.85rem 1.6rem;min-height:52px;cursor:pointer;width:100%;
}
button:hover{background:var(--btn-bg-hover)}
@media (min-width:480px){button{width:auto}}

.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}

.thanks{background:var(--surface);border:1px solid var(--hairline);border-radius:12px;padding:clamp(1.5rem,1rem + 2vw,2.25rem);margin-top:1.5rem}
.thanks h2{margin-top:0}

footer{background:var(--paper);border-top:1px solid var(--hairline);padding:2rem 20px;text-align:center}
footer .inner{max-width:var(--maxw);margin:0 auto;color:var(--ink-soft);font-size:.9rem;line-height:1.7}
footer .latin{font-family:Georgia,serif;font-style:italic}

/* Theme toggle -- fixed to the upper-right corner, always reachable. */
.theme-toggle{
  position:fixed;top:max(12px,env(safe-area-inset-top));right:max(12px,env(safe-area-inset-right));
  z-index:1000;width:44px;height:44px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;padding:0;
  background:var(--surface);color:var(--ink);border:1px solid var(--hairline);
  box-shadow:0 2px 8px rgba(0,0,0,.18);cursor:pointer;
}
.theme-toggle:hover{background:var(--rose-wash)}
.theme-toggle svg{width:20px;height:20px;display:block}
.theme-toggle .icon-sun{display:none}
.theme-toggle .icon-moon{display:block}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]) .theme-toggle .icon-sun{display:block}
  :root:not([data-theme="light"]) .theme-toggle .icon-moon{display:none}
}
:root[data-theme="dark"] .theme-toggle .icon-sun{display:block}
:root[data-theme="dark"] .theme-toggle .icon-moon{display:none}
:root[data-theme="light"] .theme-toggle .icon-sun{display:none}
:root[data-theme="light"] .theme-toggle .icon-moon{display:block}

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