.appliance-age-decoder {
    max-width: 600px;
    margin: 30px auto;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    overflow: hidden;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.aad-header {
    background: linear-gradient(135deg, #1a73e8, #0d47a1);
    color: white;
    padding: 28px 30px 20px;
    text-align: center;
}

.aad-header h2 {
    margin: 0 0 8px;
    font-size: 24px;
    font-weight: 700;
    color: white;
}

.aad-header p {
    margin: 0;
    font-size: 14px;
    opacity: 0.9;
    line-height: 1.5;
}

.aad-form {
    padding: 24px 30px;
}

.aad-field {
    margin-bottom: 18px;
}

.aad-field label {
    display: block;
    font-weight: 600;
    font-size: 14px;
    color: #333;
    margin-bottom: 6px;
}

.aad-field select,
.aad-field input[type="text"] {
    width: 100%;
    padding: 10px 14px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 15px;
    color: #333;
    background: #fafafa;
    transition: all 0.2s ease;
    box-sizing: border-box;
}

.aad-field select:focus,
.aad-field input[type="text"]:focus {
    border-color: #1a73e8;
    background: #fff;
    outline: none;
    box-shadow: 0 0 0 3px rgba(26,115,232,0.1);
}

.aad-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 12px 24px;
    background: linear-gradient(135deg, #1a73e8, #0d47a1);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.aad-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(26,115,232,0.3);
}

.aad-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.aad-spinner {
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: aad-spin 0.6s linear infinite;
}

@keyframes aad-spin {
    to { transform: rotate(360deg); }
}

.aad-result {
    padding: 0 30px 24px;
}

.aad-result-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 30px;
    background: #f8f9fa;
    border-top: 1px solid #e8e8e8;
    margin: 0 -30px 16px;
}

.aad-result-header h3 {
    margin: 0;
    font-size: 16px;
    font-weight: 700;
}

.aad-badge {
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.aad-badge.very-high { background: #e8f5e9; color: #2e7d32; }
.aad-badge.high { background: #e3f2fd; color: #1565c0; }
.aad-badge.medium { background: #fff3e0; color: #e65100; }
.aad-badge.low { background: #fce4ec; color: #c62828; }
.aad-badge.uncertain { background: #f3e5f5; color: #7b1fa2; }

.aad-result-details {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.aad-detail {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid #f0f0f0;
}

.aad-label {
    font-size: 13px;
    color: #666;
    font-weight: 500;
}

.aad-value {
    font-size: 15px;
    color: #222;
    font-weight: 600;
    text-align: right;
}

.aad-method {
    font-weight: 400;
    font-size: 13px;
    color: #555;
}

.aad-alternatives {
    margin-top: 20px;
    padding: 16px;
    background: #f8f9fa;
    border-radius: 8px;
}

.aad-alternatives h4 {
    margin: 0 0 6px;
    font-size: 14px;
    font-weight: 600;
}

.aad-note {
    margin: 0 0 10px;
    font-size: 12px;
    color: #888;
    font-style: italic;
}

.aad-alternatives ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.aad-alternatives li {
    padding: 4px 0;
    font-size: 13px;
    color: #555;
}

.aad-error {
    padding: 12px 16px;
    background: #fef2f2;
    border: 1px solid #fecaca;
    border-radius: 8px;
    color: #dc2626;
    font-size: 14px;
    margin: 0 -30px;
}

@media (max-width: 640px) {
    .appliance-age-decoder {
        margin: 15px -10px;
        border-radius: 0;
    }
    .aad-header { padding: 20px; }
    .aad-form { padding: 20px; }
}