/* Nethalo styles. Copied from the approved prototype (brief/prototype.html);
   additions for the live app are at the end of the file. */
:root{
  --bg:#EEF1F8; --surface:#FFFFFF; --text:#1B2340; --muted:#5A6283; --line:#D5DAEA;
  --accent:#3F4FC4; --accent-ink:#FFFFFF; --gold:#D9A42E; --chip:#E3E8F6;
  color-scheme:light;
  box-sizing:border-box;
  padding-top:env(safe-area-inset-top,0px);
  padding-bottom:env(safe-area-inset-bottom,0px);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#121831; --surface:#1B2344; --text:#EEF0FA; --muted:#A3AACB; --line:#2E3760;
    --accent:#8E9BFF; --accent-ink:#121831; --gold:#F2C85B; --chip:#252E55;
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#121831; --surface:#1B2344; --text:#EEF0FA; --muted:#A3AACB; --line:#2E3760;
  --accent:#8E9BFF; --accent-ink:#121831; --gold:#F2C85B; --chip:#252E55;
  color-scheme:dark;
}
*,*::before,*::after{box-sizing:inherit}
html{scroll-padding-top:env(safe-area-inset-top,0px)}
body{margin:0;background:var(--bg);color:var(--text);font:400 17px/1.5 Figtree,system-ui,-apple-system,"Segoe UI",sans-serif;-webkit-font-smoothing:antialiased}
.app{max-width:440px;margin:0 auto;padding:20px 20px 40px}
.brand{display:flex;align-items:flex-end;font-weight:700;font-size:24px;line-height:1;letter-spacing:-0.01em;margin-bottom:28px;padding-top:12px}
.logo-n{position:relative;display:inline-block}
.mark{position:absolute;left:50%;top:-3px;transform:translateX(-50%);width:17px;height:6px;border:2px solid var(--gold);border-radius:50%;box-shadow:0 0 8px var(--gold)}
.logo-halo{color:var(--gold)}
h1,h2{font-family:Newsreader,Georgia,serif;font-weight:400;letter-spacing:-0.01em;margin:0}
h1{font-size:38px;line-height:1.1}
h2{font-size:30px;line-height:1.15}
.lede{color:var(--muted);margin:10px 0 24px}
[hidden]{display:none!important}

/* Halo card */
.hcard{--c-text:#F6F1E4;--c-muted:#C9C3E6;--c-ring:#F2C85B;
  background:linear-gradient(170deg,#28306A,#161B3F);color:var(--c-text);
  border-radius:22px;padding:28px 26px 26px;text-align:center;position:relative;overflow:hidden}
.hcard.dawn{--c-text:#2A2346;--c-muted:#6A5E80;--c-ring:#E59A2F;background:linear-gradient(170deg,#F9DCCD,#E6E0F6)}
.hcard.ink{--c-text:#1B2340;--c-muted:#5A6283;--c-ring:#4F5FD1;background:linear-gradient(170deg,#FFFFFF,#E3E9FA);box-shadow:inset 0 0 0 1px #D5DAEA}
.hfor{font-size:14px;color:var(--c-muted);margin:0 0 14px}
.halo{width:132px;height:36px;margin:0 auto 22px;border-radius:50%;
  border:7px solid var(--c-ring);
  box-shadow:0 0 22px var(--c-ring), inset 0 0 12px var(--c-ring)}
.hmsg{font-family:Newsreader,Georgia,serif;font-style:italic;font-size:23px;line-height:1.35;margin:0;overflow-wrap:anywhere}
.hmsg.empty{opacity:.55}
.hfrom{margin:16px 0 0;font-size:15px;color:var(--c-muted)}
.big .hcard{padding:44px 28px 38px}
.big .halo{width:190px;height:52px;border-width:9px;margin-bottom:32px}
.big .hmsg{font-size:28px}

/* Form */
.field{margin-top:22px}
label,.label{display:block;font-weight:600;font-size:15px;margin-bottom:8px}
input[type=text],input[type=password],textarea{width:100%;font:inherit;color:var(--text);background:var(--surface);
  border:1.5px solid var(--line);border-radius:12px;padding:12px 14px}
textarea{min-height:104px;resize:vertical;font-family:Newsreader,Georgia,serif;font-size:19px;line-height:1.4}
input:focus,textarea:focus{outline:none;border-color:var(--accent)}
.row{display:flex;justify-content:space-between;align-items:center;margin-top:6px;font-size:13px;color:var(--muted)}
.starters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:10px}
.chip{font:inherit;font-size:14px;background:var(--chip);color:var(--text);border:0;border-radius:999px;padding:7px 12px;cursor:pointer}
.styles{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.style-opt{position:relative}
.style-opt input{position:absolute;opacity:0;inset:0}
.style-opt span{display:flex;flex-direction:column;align-items:center;gap:6px;padding:10px 6px 8px;border-radius:12px;border:2px solid var(--line);font-size:14px;font-weight:500;cursor:pointer;background:var(--surface)}
.style-opt i{width:100%;height:30px;border-radius:8px;display:block}
.style-opt input:checked + span{border-color:var(--accent)}
.style-opt input:focus-visible + span{outline:2px solid var(--accent);outline-offset:2px}
.sw-gold{background:linear-gradient(170deg,#28306A,#161B3F)}
.sw-dawn{background:linear-gradient(170deg,#F9DCCD,#E6E0F6)}
.sw-ink{background:linear-gradient(170deg,#FFFFFF,#E3E9FA);box-shadow:inset 0 0 0 1px #D5DAEA}

/* Buttons */
.btn{display:block;width:100%;font:inherit;font-weight:600;font-size:17px;border-radius:14px;padding:15px 18px;border:0;cursor:pointer;text-align:center}
.btn-primary{background:var(--accent);color:var(--accent-ink)}
.btn-primary:disabled{opacity:.45;cursor:not-allowed}
.btn-quiet{background:transparent;color:var(--accent);border:1.5px solid var(--line)}
.btn:focus-visible,.chip:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.stack{display:grid;gap:10px;margin-top:22px}
.hint{font-size:14px;color:var(--muted);text-align:center;margin:10px 0 0}
.send-opts{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:22px}
.send-opts .btn{padding:14px 6px;font-size:15px;background:var(--surface);color:var(--text);border:1.5px solid var(--line)}
.linkbtn{background:none;border:0;color:var(--muted);font:inherit;font-size:15px;text-decoration:underline;cursor:pointer;display:block;margin:18px auto 0}

/* Recipient */
.proto-bar{font-size:13px;color:var(--muted);background:var(--chip);border-radius:10px;padding:8px 12px;margin-bottom:22px;display:flex;justify-content:space-between;align-items:center;gap:8px}
.proto-bar .bar-btns{display:flex;gap:14px}
.proto-bar button{background:none;border:0;color:var(--accent);font:inherit;font-weight:600;cursor:pointer;padding:0}
.envelope{text-align:center;padding:60px 10px 30px}
.envelope .halo{--c-ring:var(--gold);margin-bottom:30px;animation:breathe 2.6s ease-in-out infinite}
.envelope p{color:var(--muted);margin:10px 0 30px}
@keyframes breathe{0%,100%{box-shadow:0 0 14px var(--c-ring),inset 0 0 8px var(--c-ring)}50%{box-shadow:0 0 34px var(--c-ring),inset 0 0 16px var(--c-ring)}}

.reveal .hcard{overflow:visible}
.reveal .hcard::after{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:radial-gradient(70% 45% at 50% 32%, var(--c-ring), transparent 70%);opacity:0;
  animation:landGlow 1.6s ease-out 1.85s both}
.reveal .halo{position:relative;z-index:2;
  animation:haloDrop 2s cubic-bezier(.3,.6,.3,1) .3s both, haloFloat 4s ease-in-out 2.4s infinite}
.reveal .hfor{animation:fadeIn .6s ease .1s both}
.reveal .hmsg{animation:wordsIn 1.1s ease 1.95s both}
.reveal .hfrom{animation:fadeIn .7s ease 2.7s both}
.reveal-actions{animation:fadeIn .6s ease 3.2s both}
@keyframes haloDrop{
  0%{opacity:0;transform:translateY(-55vh) rotate(-10deg) scale(.85);box-shadow:0 0 10px var(--c-ring)}
  12%{opacity:1}
  68%{transform:translateY(12px) rotate(4deg) scale(1)}
  80%{transform:translateY(-7px) rotate(-2deg)}
  90%{transform:translateY(2px) rotate(.6deg);box-shadow:0 0 80px var(--c-ring),inset 0 0 26px var(--c-ring)}
  100%{opacity:1;transform:none;box-shadow:0 0 26px var(--c-ring),inset 0 0 12px var(--c-ring)}}
@keyframes haloFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-5px)}}
@keyframes landGlow{0%{opacity:0}20%{opacity:.4}100%{opacity:0}}
@keyframes wordsIn{from{opacity:0;filter:blur(8px);transform:translateY(8px)}to{opacity:1;filter:none;transform:none}}
@keyframes fadeIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-delay:0s!important;animation-iteration-count:1!important}
}

/* Sheet + toast */
.sheet{position:fixed;inset:0;background:rgba(10,14,32,.6);display:flex;align-items:flex-end;justify-content:center;z-index:20}
.sheet-inner{background:var(--bg);width:100%;max-width:440px;border-radius:22px 22px 0 0;padding:20px 20px calc(20px + env(safe-area-inset-bottom,0px));max-height:92%;overflow:auto}
.sheet img{display:block;width:62%;margin:0 auto;border-radius:14px;box-shadow:0 8px 30px rgba(0,0,0,.25)}
.sheet p{text-align:center;color:var(--muted);font-size:15px;margin:14px 0 4px}
.toast{position:fixed;left:50%;bottom:calc(24px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);background:var(--text);color:var(--bg);padding:12px 16px;border-radius:12px;font-size:15px;max-width:min(400px,calc(100% - 32px));z-index:30;text-align:center}

/* ---- Live app additions ---- */
a.btn{text-decoration:none}
.form-error{background:var(--chip);color:var(--text);border-radius:12px;padding:10px 14px;font-size:15px;margin:14px 0 0;text-align:center}
.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-top:8px}
.stat{background:var(--surface);border:1.5px solid var(--line);border-radius:14px;padding:14px}
.stat b{display:block;font-size:28px;font-family:Newsreader,Georgia,serif;font-weight:400}
.stat span{font-size:14px;color:var(--muted)}
.stat.key{grid-column:1 / -1;border-color:var(--gold)}
.small-note{font-size:13px;color:var(--muted);margin-top:18px}