.ext-form-shell {
    min-height: 100vh;
    background: linear-gradient(180deg, #f0fdf4 0%, #f8fafc 40%);
    padding: 24px 16px;
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

.ext-form-card {
    width: 100%;
    max-width: 560px;
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 16px;
    padding: 24px;
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
}

.ext-form-btn {
    background: #166534;
    color: #fff;
    font-weight: 700;
    padding: 12px 16px;
    border-radius: 12px;
    border: none;
    cursor: pointer;
}

.ext-form-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.ext-form-btn:hover:not(:disabled) {
    background: #14532d;
}

.ext-form-btn:focus-visible {
    outline: 2px solid #166534;
    outline-offset: 2px;
}

.ext-form-textarea {
    width: 100%;
    border: 1px solid #d1d5db;
    border-radius: 12px;
    padding: 12px;
    font-size: 14px;
}

.ext-form-skel {
    background: linear-gradient(90deg, #f3f4f6 25%, #e5e7eb 50%, #f3f4f6 75%);
    background-size: 200% 100%;
    animation: ext-form-shimmer 1.2s infinite;
    border-radius: 8px;
}

@keyframes ext-form-shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}