* { box-sizing: border-box; }
:root { color-scheme: light; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
body { margin: 0; min-height: 100svh; background: radial-gradient(circle at 50% 20%, #fff8fb, #f4e2eb 72%); color: #573449; }
.app { width: min(100% - 32px, 460px); min-height: 100svh; margin: 0 auto; padding: max(34px, env(safe-area-inset-top)) 0 max(24px, env(safe-area-inset-bottom)); display: flex; flex-direction: column; align-items: center; }
.brand { font-size: 1.45rem; font-weight: 800; letter-spacing: .02em; color: #a84478; }
.brand span { font-size: 1.5em; vertical-align: -3px; }
.tagline { margin: 6px 0 30px; color: #8c687b; font-size: .92rem; }
.heart-panel { width: 100%; padding: 34px 24px 28px; border: 1px solid #f0d5e2; border-radius: 28px; background: rgba(255,255,255,.76); box-shadow: 0 18px 55px rgba(122,58,91,.10); text-align: center; }
.heart { width: 104px; height: 104px; margin: 0 auto 18px; display: grid; place-items: center; border-radius: 50%; background: #c85b91; color: white; font-size: 3.8rem; box-shadow: 0 10px 26px rgba(200,91,145,.25); }
h1 { margin: 0; color: #a84478; font-size: 1.55rem; line-height: 1.25; }
.hint { max-width: 270px; margin: 10px auto 24px; color: #896d7c; line-height: 1.5; }
.send-button { width: 100%; min-height: 60px; margin-top: 9px; border: 0; border-radius: 18px; background: #c6538d; color: white; font-size: 1.08rem; font-weight: 750; box-shadow: 0 8px 20px rgba(198,83,141,.20); cursor: pointer; touch-action: manipulation; }
.send-button.german { background: #526f9f; box-shadow: 0 8px 20px rgba(82,111,159,.18); }
.send-button:active { transform: scale(.985); }
.send-button:disabled { opacity: .6; cursor: wait; }
.status { min-height: 1.5em; margin: 17px 0 0; color: #876b7b; font-size: .9rem; }
.settings { width: 100%; margin-top: 18px; padding: 17px; border: 1px solid #ecd3df; border-radius: 18px; background: rgba(255,255,255,.55); }
summary { cursor: pointer; font-weight: 700; color: #8f426d; }
label { display: block; margin: 17px 0 7px; font-size: .9rem; font-weight: 650; }
input { width: 100%; min-height: 46px; padding: 10px 12px; border: 1px solid #dcbccc; border-radius: 11px; background: white; color: #573449; font-size: 16px; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.secondary { flex: 1; min-height: 42px; padding: 8px 10px; border: 1px solid #d9b5c8; border-radius: 11px; background: #fff7fb; color: #8f426d; font-weight: 650; cursor: pointer; }
.small { color: #8a7180; font-size: .8rem; line-height: 1.5; }
footer { margin-top: auto; padding-top: 28px; color: #a27f91; font-size: .82rem; }
@media (prefers-reduced-motion: no-preference) { .heart { animation: pulse 2.4s ease-in-out infinite; } @keyframes pulse { 50% { transform: scale(1.045); } } }