* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--tg-theme-bg-color, #f4f5f7);
    color: var(--tg-theme-text-color, #1c1c1e);
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 560px;
    margin: 0 auto;
    padding: 16px;
}

h1 { font-size: 22px; margin: 8px 0 4px; }
h2 { font-size: 16px; margin: 20px 0 8px; color: #6b7280; }
.sub { color: #9ca3af; margin: 0 0 16px; font-size: 14px; }
.footnote { color: #9ca3af; font-size: 12px; text-align: center; }

.card {
    background: var(--tg-theme-secondary-bg-color, #ffffff);
    border-radius: 12px;
    padding: 12px 16px;
    margin-bottom: 8px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.04);
}

.field { margin-bottom: 10px; }
.field:last-child { margin-bottom: 0; }
.field label { display: block; font-size: 13px; color: #6b7280; margin-bottom: 4px; }

input {
    width: 100%;
    padding: 10px 12px;
    font-size: 16px;
    border: 1px solid #d1d5db;
    border-radius: 10px;
    background: var(--tg-theme-bg-color, #ffffff);
    color: inherit;
}

input:focus { outline: none; border-color: #ee7d0b; }

.meter-row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 8px;
    align-items: end;
    margin-bottom: 8px;
}
.meter-row:last-child { margin-bottom: 0; }
.meter-row > div { display: flex; flex-direction: column; }
.meter-row label { font-size: 11px; color: #9ca3af; margin-top: 3px; }
.meter-name { font-size: 14px; color: #1c1c1e; padding-bottom: 10px; }

.captcha-card { padding: 8px; }

.submit-btn {
    width: 100%;
    margin-top: 12px;
    padding: 14px;
    font-size: 17px;
    font-weight: 600;
    color: #fff;
    background: var(--tg-theme-button-color, #ee7d0b);
    border: none;
    border-radius: 12px;
    cursor: pointer;
}
.submit-btn:disabled { opacity: 0.6; }

.message {
    padding: 12px 14px;
    border-radius: 10px;
    margin-bottom: 12px;
    font-size: 14px;
    line-height: 1.4;
}
.message.success { background: #dcfce7; color: #166534; }
.message.error { background: #fee2e2; color: #991b1b; }