* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
    background-color: #0a0a0a;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    color: #fff;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-container {
    width: 100%;
    max-width: 400px;
    background-color: rgba(26, 26, 26, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.logo-area {
    text-align: center;
    margin-bottom: 30px;
}

.logo-text {
    font-size: 24px;
    font-weight: 400;
    color: #e6a23c;
    font-style: italic;
}
.logo-text span {
    font-size: 32px;
    font-weight: 800;
    color: #fff;
}

.auth-tabs {
    display: flex;
    margin-bottom: 30px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.auth-tab {
    flex: 1;
    text-align: center;
    padding: 12px;
    font-size: 16px;
    color: #9ca3af;
    cursor: pointer;
    position: relative;
    transition: color 0.3s;
}

.auth-tab.active {
    color: #e6a23c;
    font-weight: 500;
}

.auth-tab.active::after {
    content: "";
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: #e6a23c;
}

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

.form-label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    color: #d1d5db;
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    background-color: #262626;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: #fff;
    font-size: 16px;
    outline: none;
    transition: border-color 0.3s;
}

.form-input:focus {
    border-color: #e6a23c;
}

.submit-btn {
    width: 100%;
    padding: 14px;
    background-color: #e6a23c;
    color: #000;
    border: none;
    border-radius: 9999px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    margin-top: 10px;
}

.submit-btn:hover {
    background-color: #f0b856;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(230, 162, 60, 0.4);
}

.submit-btn:disabled {
    background-color: #4a4a4a;
    color: #8a8a8a;
    cursor: not-allowed;
    opacity: 0.6;
    transform: none;
    box-shadow: none;
}

.submit-btn:not(:disabled) {
    animation: pulse-glow 2s infinite;
}

@keyframes pulse-glow {
    0%, 100% {
        box-shadow: 0 0 5px rgba(230, 162, 60, 0.3);
    }
    50% {
        box-shadow: 0 0 15px rgba(230, 162, 60, 0.6);
    }
}

.agreement-box {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: #9ca3af;
    margin-bottom: 20px;
    padding: 12px;
    border-radius: 8px;
    background-color: rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
}

.agreement-box.checked {
    background-color: rgba(230, 162, 60, 0.15);
    border: 1px solid rgba(230, 162, 60, 0.3);
    color: #e6a23c;
}

.agreement-box input[type="checkbox"] {
    accent-color: #e6a23c;
    width: 18px;
    height: 18px;
    cursor: pointer;
    transition: transform 0.2s;
}

.agreement-box input[type="checkbox"]:checked {
    transform: scale(1.1);
}

.agreement-box:hover {
    background-color: rgba(255, 255, 255, 0.08);
}

.agreement-box.checked:hover {
    background-color: rgba(230, 162, 60, 0.2);
}

.agreement-link {
    color: #e6a23c;
    text-decoration: none;
}

/* Hidden utility */
.hidden {
    display: none;
}

.login-header {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    padding: 16px;
    z-index: 10;
}

.back-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 16px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 8px;
    border-radius: 4px;
    transition: background-color 0.2s;
}

.back-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: #fff;
}

/* 消息提示容器 */
#messageContainer {
    min-height: 20px;
    margin-bottom: 20px;
}

/* 被踢下线的消息样式 */
.kick-message {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background-color: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: 12px;
    color: #fca5a5;
    font-size: 14px;
    animation: slideIn-down 0.5s ease-out;
    transition: opacity 0.5s ease-out;
}

@keyframes slideIn-down {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.kick-message svg {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    stroke: #fca5a5;
}

/* 成功消息样式 */
.success-message {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background-color: rgba(34, 197, 94, 0.15);
    border: 1px solid rgba(34, 197, 94, 0.3);
    border-radius: 12px;
    color: #86efac;
    font-size: 14px;
    animation: slideIn-down 0.5s ease-out;
}

.success-message svg {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    stroke: #86efac;
}

/* 错误消息样式 */
.error-message {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background-color: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: 12px;
    color: #fca5a5;
    font-size: 14px;
    animation: shake 0.5s ease-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

.error-message svg {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    stroke: #fca5a5;
}

/* 移动端适配 */
@media (max-width: 480px) {
    .kick-message,
    .success-message,
    .error-message {
        font-size: 13px;
        padding: 12px;
        gap: 8px;
    }

    .kick-message svg,
    .success-message svg,
    .error-message svg {
        width: 18px;
        height: 18px;
    }
}