:root {
    --primary-color: #0056c6;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --border-color: #EBEBEB;
    --text-color: #5a5959;
}
 
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.5;
}

.page {
    min-height: 80vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.form-wrapper {
    width: 100%;
    max-width: 800px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.header {
    padding: 15px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    height: 40px;
    width: auto;
}

.key-info {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    font-size: 14px;
    color: var(--text-color);
}

.content {
    padding: 20px;
}

.input-group {
    margin-bottom: 20px;
}

.input-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
}

.input-group input {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 14px;
}

#key, #subsessionID {
    /* background-color: #f0f0f0; */
    border-color: #a9a9a9;
}

.notice-box {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 15px 20px;
    margin-bottom: 20px;
    font-size: 16px;
    font-weight: bold;
}

.notice-box ul {
    list-style: none;
}

.notice-box li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 8px;
    font-size: 14px;
}

.notice-box li:before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

.btn {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 4px;
    font-weight: 600;
    cursor: pointer;
    margin-bottom: 10px;
    transition: background-color 0.2s;
}

.btn-primary {
    background: var(--primary-color);
    color: #fff;
}

.btn-success {
    background: var(--success-color);
    color: #fff;
}

.btn-danger {
    background: var(--danger-color);
    color: #fff;
}

.btn-warning {
    background: var(--warning-color);
    color: #fff;
}

.loading-dialog {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: none;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    color: #fff;
    z-index: 1000;
}

.loading-dialog .loading-message {
    margin: 12px 0;
    line-height: 1.5;
}

.loading-spinner {
    border: 8px solid #f3f3f3;
    border-top: 8px solid var(--primary-color);
    border-radius: 50%;
    width: 64px;
    height: 64px;
    animation: spin 1s linear infinite;
    margin-bottom: 20px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.required {
    color: #dc3545;
    margin-left: 4px;
}

@media (max-width: 768px) {
    .form-wrapper {
        margin: 10px;
    }
}

.footer {
    position: fixed;
    left: 0;
    bottom: 0;
    width: 100%;
    text-align: left;
    padding: 10px 0;
    background-color: #f8f9fa;
    color: var(--text-color);
}