body {
  background: #000;
  color: #fff;
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, Arial, sans-serif;
  display: flex;
  justify-content: center;
  margin: 0;
}

.c {
  max-width: 560px;
  width: 100%;
  padding: 48px 24px 60px;
}

.back-link {
  display: inline-block;
  color: rgba(255,255,255,0.5);
  text-decoration: none;
  font-size: 13px;
  margin-bottom: 24px;
}
.back-link:hover { color: #fff; }

h1 { font-size: 28px; letter-spacing: 1px; margin: 0 0 4px; }
h2 { font-size: 16px; font-weight: 500; color: rgba(255,255,255,0.7); margin: 0 0 20px; }
.intro { font-size: 14px; color: rgba(255,255,255,0.6); line-height: 1.5; margin-bottom: 28px; }

label {
  display: block;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: rgba(255,255,255,0.5);
  margin: 16px 0 6px;
}

input[type="text"],
input[type="url"],
textarea {
  display: block;
  width: 100%;
  box-sizing: border-box;
  padding: 12px 14px;
  background: #111;
  color: #fff;
  border: 1px solid #333;
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  resize: vertical;
}
input:focus, textarea:focus { outline: none; border-color: #888; }

.avatar-field { margin-bottom: 8px; }
.avatar-picker {
  display: flex;
  align-items: center;
  gap: 16px;
}
#avatarPreview {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid #333;
  background: #111;
}
.avatar-picker input[type="file"] {
  color: rgba(255,255,255,0.7);
  font-size: 13px;
}

.checkbox-line {
  display: flex;
  align-items: center;
  gap: 8px;
  text-transform: none;
  font-size: 14px;
  color: #fff;
  margin: 20px 0;
}
.checkbox-line input { width: auto; margin: 0; }
.checkbox-hint {
  font-size: 12px;
  color: rgba(255,255,255,0.45);
  margin: -12px 0 16px;
  line-height: 1.5;
}

button {
  width: 100%;
  padding: 14px 20px;
  background: #fff;
  color: #000;
  border: none;
  border-radius: 24px;
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  transition: transform 0.15s ease, opacity 0.15s ease;
}
button:hover { transform: scale(1.02); }
button:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

.form-msg {
  min-height: 20px;
  font-size: 13px;
  margin-top: 14px;
  text-align: center;
}
.form-msg.success { color: #6fe08a; }
.form-msg.error { color: #ff6b6b; }

.invite-box {
  margin-top: 24px;
  padding: 18px;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 10px;
  background: rgba(255,255,255,0.03);
}
.invite-label { font-size: 13px; font-weight: 600; margin: 0 0 10px; }
.invite-row { display: flex; gap: 8px; }
.invite-row input {
  flex: 1;
  padding: 10px 12px;
  background: #111;
  color: rgba(255,255,255,0.85);
  border: 1px solid #333;
  border-radius: 6px;
  font-size: 12px;
}
.invite-row button {
  width: auto;
  padding: 10px 16px;
  border-radius: 6px;
  font-size: 12px;
}
.invite-hint {
  font-size: 12px;
  color: rgba(255,255,255,0.5);
  margin: 10px 0 0;
}