:root {
    --user-bg-super-dark: #000e14;
    --user-text-primary: #e0e0e0;
    --user-text-white: #fff;
    --user-text-gray: #666;
    --user-input-bg: rgba(255, 255, 255, 0.05);
    --user-input-border: rgba(255, 255, 255, 0.1);
    --user-input-border-focus: rgba(255, 255, 255, 0.3);
    --user-input-bg-focus: rgba(255, 255, 255, 0.1);
    --user-btn-bg: rgba(255, 255, 255, 0.05);
    --user-btn-bg-hover: rgba(255, 255, 255, 0.1);
    --user-btn-border: rgba(255, 255, 255, 0.1);
    --user-btn-border-hover: rgba(255, 255, 255, 0.2);
    --user-alert-bg: rgba(255, 255, 255, 0.05);
    --user-alert-border: rgba(255, 255, 255, 0.1);
    --user-link-hover: #007bff;
    --user-danger-text: #ff4d4d;
    --srsc-status-warning: #ffc107;
    /* 添加复选框相关变量 */
    --user-checkbox-border: rgba(255, 255, 255, 0.2);
    --user-checkbox-bg: transparent;
    --user-checkbox-checked-bg: #007bff;
    --user-checkbox-checkmark: #fff;
}

body {
    font-family: "Microsoft YaHei", Arial, sans-serif;
    background-color: var(--user-bg-super-dark);
    color: var(--user-text-primary);
}

.login-wrapper,
.register-wrapper {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.page-header {
    position: absolute;
    top: 20px;
    left: 20px;
    z-index: 10;
}

.page-header a {
    color: var(--user-text-white);
    text-decoration: none;
    font-weight: 300;
    font-size: 1.2rem;
    letter-spacing: 0.5px;
    transition: all 0.2s ease;
}

.page-header .badge {
    color: var(--user-bg-super-dark);
    padding: 2px 5px;
    border-radius: 5px;
    background-color: var(--srsc-status-warning);
}

.login-container,
.register-container {
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
}

.login-card,
.register-card {
    background-color: transparent;
    border: none;
    box-shadow: none;
    padding: 0;
}

.card-header {
    margin-bottom: 30px;
}

.card-header h3 {
    color: var(--user-text-white);
    font-size: 1.5rem;
    font-weight: 500;
    margin: 0;
    letter-spacing: 0.5px;
}

.card-header p {
    color: var(--user-text-gray);
    font-size: 1rem;
    margin-top: 8px;
    opacity: 0.7;
}

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

.input-wrapper {
    width: 100%;
    position: relative;
}

.input-wrapper label {
    display: block;
    margin-bottom: 8px;
    color: var(--user-text-gray);
    font-size: 0.9rem;
    font-weight: 500;
}

.input-wrapper input {
    width: 92%;
    padding: 12px 16px;
    background-color: var(--user-input-bg);
    border: 1px solid var(--user-input-border);
    border-radius: 4px;
    color: var(--user-text-white);
    font-size: 1rem;
    transition: all 0.2s ease;
}

.input-wrapper input:focus {
    outline: none;
    border-color: var(--user-input-border-focus);
    background-color: var(--user-input-bg-focus);
}

.form-actions {
    margin-bottom: 20px;
}

.btn-login,
.btn-register {
    width: 100%;
    padding: 12px;
    background-color: var(--user-btn-bg);
    border: 1px solid var(--user-btn-border);
    border-radius: 4px;
    color: var(--user-text-white);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-login:hover,
.btn-register:hover {
    background-color: var(--user-btn-bg-hover);
    border-color: var(--user-btn-border-hover);
}

.email-send-button {
    width: 31%;
    margin-left: 4%;
    padding: 12px 16px;
    background-color: var(--user-btn-bg);
    border: 1px solid var(--user-btn-border);
    border-radius: 4px;
    color: var(--user-text-white);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-block;
}

.card-footer {
    text-align: center;
    margin-top: 20px;
}

.card-footer p {
    color: var(--user-text-gray);
    font-size: 0.9rem;
    margin: 0;
}

.card-footer a {
    color: var(--user-text-white);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

.card-footer a:hover {
    color: var(--user-link-hover);
}

.alert {
    background-color: var(--user-alert-bg);
    border: 1px solid var(--user-alert-border);
    color: var(--user-text-white);
    padding: 12px;
    border-radius: 4px;
    margin-bottom: 20px;
}

.text-danger {
    color: var(--user-danger-text);
    font-size: 0.85rem;
    margin-top: 8px;
}

.page-footer {
    position: absolute;
    bottom: 20px;
}

.page-footer p {
    color: var(--user-text-white);
    font-size: 0.8rem;
    margin-top: 40px;
}

.page-footer a {
    color: var(--user-link-hover);
    text-decoration: none;
}

.text-help {
    color: var(--user-text-gray);
    font-size: 0.85rem;
    margin-top: 8px;
}

/* 自定义复选框样式 */
.checkbox-wrapper {
    display: flex;
    align-items: center;
    letter-spacing: 0.2em;
}

.checkbox-wrapper input[type="checkbox"] {
    display: none;
}

.remember-me {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    font-size: 0.9rem;
}

.remember-me a {
    color: var(--user-checkbox-checked-bg);
    text-decoration: none;
}

.checkbox-wrapper .remember-me-label {
    position: relative;
    cursor: pointer;
    padding-left: 25px;
    color: var(--user-text-gray);
    font-size: 0.9rem;
    user-select: none;
    transition: color 0.2s ease;
}

.checkbox-wrapper .remember-me-label:hover {
    color: var(--user-text-primary);
}

.checkbox-wrapper .remember-me-label:before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 16px;
    height: 16px;
    background-color: var(--user-bg-super-dark);
    box-shadow: inset 0px 0px 1px 1px var(--user-text-gray);
    border-radius: 3px;
    transition: all 0.3s ease;
}

.checkbox-wrapper input[type="checkbox"]:checked+.remember-me-label:before {
    background-color: var(--user-checkbox-checked-bg);
    border-color: var(--user-checkbox-checked-bg);
}

.checkbox-wrapper .remember-me-label:after {
    content: "";
    position: absolute;
    left: 6px;
    top: 40%;
    transform: translateY(-50%) rotate(45deg);
    width: 3px;
    height: 8px;
    border: solid var(--user-text-white);
    border-width: 0 2px 2px 0;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.checkbox-wrapper input[type="checkbox"]:checked+.remember-me-label:after {
    opacity: 1;
}

.checkbox-wrapper a {
    color: var(--user-link-hover);
    text-decoration: none;
}

.checkbox-wrapper a:hover {
    text-decoration: underline;
}

.card-header p {
    color: var(--user-text-gray);
    font-size: 1rem;
    margin-top: 8px;
    opacity: 0.7;
}